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LUA88-071 Vol 1 of 3
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'\ ' `. • \l , .4, / ` e tL : } • j 4, - - , _ ;�&' � : 14' - • ' ¥ , &-� 2 . .� . � • � �� \ y>/\ - ir .,�. � . . -4_4, :\ ¥ . © » ® . ow 0 „ rAy, o� vC� OoQ co,dog ° � � Date AN UAgf 5 , 1990 LUAU-oil,sfl - Subject NL CK Nvm. /rd eoiuo rI 6CD TN? r1-A DI , SHARE YOUR MEMORIES WITH D 0 Effi 0 Architecture and Planning MICROFILMED Leason Pomeroy Northwest, Inc.,Royce A. Berg,A.I.A., 1127 Pine Street,Suite 300 Seattle,WA 98101 (206)583-8030 March 12, 1992 !VI?LAWNS IT' OF RE TA N Lenora Blauman Project Manager Planning toR 61 v 1.992 City of Renton 200 Mill Avenue S. Renton, WA 98055 Re: Blackriver Corporate Park, Shoreline Substantial Development Permits: Tract A, Phase VIII : SSM; SMP-109-89 Permit #1992-13072 Tract B, Phase VII : SSM; SMP-071-88 Permit #1992-13071 Dear Lenora: Per D.O.E. letters, 25 and 26 February 1992 additional information is noted: Item 1 .a: Mitigation for filing 0. 10 acres of emergent wetlands on Tract A and 0.04 acres of emergent wetlands on Tract B includes excavating of previously filled portions of the historic Black River channel to provide new expanded wetlands (See enclosed Wetland Mitigation & Enhancement Plan) . The excavated soils will be placed on the adjacent site for which Site Plan Approval has been granted by the City of Renton. Item 1 .b: The area in which the mitigation is to occur is classified URBAN per the Shoreline Management plan for Renton. See Detailed Work Plan in the Wetland Mitigation & Enhancement Plan for a discussion of the work to be performed. Item 2.a: Specific public access easements to the shoreline property owned by the City of Renton are shown on the enclosed exhibits for Tract A and Tract B. Existing curb cuts are utilized where possible to facilitate easy access. Locations and size are pursuant to direction provided by the City of Renton (3 copies) . Item 3.a: A copy of the Wetland Mitigation & Enhancement Plan dated October 31, 1991 and previously provided to the City of Renton as part of Site Plan Approval is enclosed (3 copies) . R -ctful , I Royce. erg Pr:sident RAB:fvj cc: Patricia Trerice Permit Coordinator, Shoreline Management D.O.E. (ltr, exhibits & wetland study) Larry Warren: Renton City Attorney (ltr) Dean Erickson First City (ltr) Amy Kosterlitz Buck & Gordon (ltr) Bob Denman Jones & Stokes (ltr) r .. CONCEPTUAL WETLAND MITIGATION PLAN Black River Corporate Park <f)r 1 } jT , Prepared for: Mr. Dean Erickson First City Washington 700 Fifth Avenue, Suite 6000 Seattle, WA 98104 Prepared by: Jones & Stokes Associates 2820 Northup Way, Suite 100 Bellevue, WA 98004 (206) 822-1077 October 31, 1991 Table of Contents Page INTRODUCTION 1 BASELINE INFORMATION 1 Wetland 1 1 Wetland 2 4 Wetland 3 4 Wetland 4 4 Wetland Functional Values 5 Groundwater Recharge 5 Groundwater Discharge 5 Flood Storage 6 Shoreline Anchoring 6 Sediment Trapping 6 Food Chain Support 7 Wildlife Habitat 7 Active Recreation, Passive Recreation, Heritage, and Education 7 Fishery Habitat 7 IMPACTS TO WETLANDS 8 Mitigation Proposal 8 Environmental Goals 9 Plan Overview 9 Existing Condition of Mitigation Areas 9 Detailed Work Plan 10 Performance Standards 13 Monitoring Program 13 Contingency Plan 13 Performance Bond 14 CITATIONS 14 Attachment A FIRST MY WA 10/31/91 1 List of Figures Figure Page 1 Vicinity Map 2 2 Wetlands on Tracts A and B and Adjacent Areas 3 3 Wetland Mitigation and Buffer Areas Follows Page 14 FIRST CITY WA 10/31/91 11 List of Tables Table Page 1 Planting List for Black River Corporation Park Mitigation and Buffer Areas 12 FIRST CITY WA 10/31/91 111 INTRODUCTION First City Development Corporation proposes to build the Black River Corporate Park offices on property located in the City of Renton, Washington, in King County (Figure 1). The subject property is approximately 28 acres and is divided into two parcels designated Tract A and Tract B. Springbrook Creek divides Tracts A and B; Tract A is a parcel of 12.7 acres west of Tract B, which is a parcel of 15.7 acres. The property is bordered by Oaksdale Avenue Southwest to the south, Naches Avenue Southwest and Southwest Seventh Street to the east, and a King County pump station to the west. Riparian forest and a pump station pond (P-1 pond) borders the property to the north. This report has been prepared to address wetland issues associated with the development of the Black River Corporate Park. This document describes existing wetlands at the site, impacts to wetlands that would result from the proposed development, and a proposed conceptual wetland mitigation plan. BASELINE INFORMATION The parcel is relatively flat and contains no steep slopes. Portions of both Tracts A and B were filled and graded in 1984, 1987, and 1988. Two wetlands were delineated on both Tract A and Tract B (Figure 2). The majority of Tract A is upland and primarily vegetated with herbaceous species. Diverse upland and wetland communities occupy Tract B. Visits to the site were conducted on March 25 and October 21, 1991. Four wetlands were identified and delineated on the property during the March 25 site visit. On October 21,the site was revisited to investigate potential mitigation areas. Figure 2 presents wetland locations and acreages, a total of approximately 1.24 acres. These wetlands were not identified during the King County Planning Division (1981) wetland inventory. Based on the U.S. Fish and Wildlife classification scheme (Cowardin et al. 1979), wetland habitat at the site would be classified as palustrine emergent, palustrine scrub-shrub, and palustrine forested. As observed during the March 25 site visit, vegetation, soils, and hydrology for each of the four wetlands are briefly described in the following sections; a more detailed description is provided in the wetland report in Attachment A. Wetland 1 Wetland 1 is a palustrine scrub-shrub and emergent wetland that occurs as an enclosed depression on Tract A (Figure 2). The majority of this wetland is scrub-shrub dominated by willow (Salix spp.) saplings; red alder (Alnus rubra) saplings and red-osier FIRST CITY WA 10/31/91 1 • Eartington Golf Course. • • SW 7th St. • 1 SITE TUKWILA 405 s oloke • niers/sly • RENTON co Longacres • • Race Track '67 • • • • • • 0 .5 1 • I I I MILES Figure 1. Vicinity Map FIRST CITY WA 10/31/91 G . -- 8 M ---- 4 n . i- •itit•_,,„44.44. -•/ 4 "1/111111111111111111k: P-1 PUMP ........... 10 PLANT A , c.k.) "s•-• ....-----.., ...---' \ •:., NORTH . ---...,............7 ) ditik" ,J 0. ...../.- I / g zy/t Zi 1.1 Acre . Wetland APPROX.400'-41 (To be retained) Monster Road • /4 TRACT 13' I S.W.Seventh St. Legend 0.04 Acre 0.1 Acre Oaksdale Ave S.W. S%t\:3%. Wetland 177A Noted/kiwi Wetlands (To be fIlled) Ei!i!iii!M 11?olabe filled) . "andstract A and 8 Boundanos ..................-- METRO Figure 2. Wetlands on Tracts A and B and Adjacent Areas dogwood (Cornus stolonifera) occasionally appear. A small portion of this wetland is emergent habitat. Soft rush (Juncus effusus), orchard grass (Dactylic glomerata), and reed canarygrass (Phalaris arundinacea) are the dominant herbaceous species in the emergent portion of the wetland. Soils on Tract A have been mapped by the Soil Conservation Service (SCS) as Puyallup fine sandy loam. Puyallup fine sandy loam is described as a soil formed in alluvium, typically found in valley bottoms, and not listed as hydric by the SCS. Soils in this wetland were observed to be low chroma silty fine sands with mottles. As previously stated, this site has been graded and filled. The soils observed are compacted fill material. Standing water was observed within the wetland. The primary source of water is precipitation which does not percolate through the compacted soils. Wetland 2 Wetland 2 is a palustrine emergent wetland that occurs as an enclosed depression on Tract A. This wetland has also been disturbed, and the vegetation lacks diversity. Soft rush is the dominant herbaceous species. Soils in this wetland were observed to be low chroma silty sands with light brown mottles. Standing water was observed and is likely due primarily to precipitation collecting atop compacted fill. Wetland 3 Wetland 3 is a palustrine emergent wetland that occurs as an enclosed depression located on Tract B. Dominant emergent vegetation consists of common cattail. (Typha latifolia) and reed canarygrass. The SCS has mapped soils on Tract B as Woodinville silt loam. Woodinville silt loam is listed as hydric by the SCS and is described as a poorly drained soil formed in alluvium and is typically found in stream bottoms. Soils were observed to be low chroma loams with mottles. Precipitation and storm runoff are the primary sources of water. Standing water atop of the compacted fill was observed during the field investigation. Wetland 4 This palustrine scrub-shrub and emergent wetland is located on Tract B within the historic Black River channel. Dominant shrub vegetation consists of red alder saplings, willow saplings, and salmonberry (Rubus spectabilis); red elderberry (Sambucus racemosa), Oregon ash (Fraxinus latifolia), and red-osier dogwood occur occasionally. Dominant emergent vegetation consists of common cattail,purple loosestrife(Lythrum salicaria),small- FIRST CITY WA 10/31/91 4 fruited bulrush (Scirpus microcarpus), reed canarygrass, and soft rush. A small forested area dominated by black cottonwood (Populus trichocarpa) and red alder occurs in the northeastern portion of the wetland. This wetland is located in a depression at an elevation approximately 15 feet below surrounding the upland fill areas on Tract B. Soils within the wetland were observed to be black mucks to a depth of 3 feet. Standing water or surface soil saturation was observed throughout the wetland area. A 4- to 5-foot diameter concrete culvert placed in an approximately 50-foot-wide fill berm divides the wetland into northern and southern portions. The culvert invert elevation is higher than the wetland elevation; water flowing through the,culvert is most likely only during high storm events. The primary source of water within this wetland is high groundwater levels. Water flows north from this wetland to a small channel which connects to the P-1 storage pond. Wetland Functional Values To create a wetland to compensate for one that is being disturbed, it is important to understand the existing functional values so that these functions can be considered in the replacement wetland. It is, however, extremely difficult to quantify wetland functional values. Methodologies developed to quantify wetland functions and values are usually not appropriate for small, relatively urban, or disturbed settings. For these reasons, this discussion is highly subjective. Eleven functions are identified by the Federal Highway Administration's Wetland Functional Assessment Method (Adamus 1983). Relative values of each function at Tracts A and B are briefly discussed in this section. Groundwater Recharge Certain wetlands can contribute significantly to recharging regional groundwater. The majority of hydrologists believe, however, that most wetlands do not perform this function (Sather and Smith 1984). The value of a particular wetland for groundwater recharge is probably related to the edge to volume ratio of the wetland (Erwin 1990). Wetlands 1, 2, and 3 are small, enclosed depressions which are primarily fed by precipitation. Groundwater recharge is not expected to be a functional value of these wetlands. Some groundwater recharge may occur in Wetland 4. Groundwater Discharge Wetlands can be valuable as groundwater discharge sites because they can help to maintain stream flow during dry portions of the year. Because Wetlands 1, 2, and 3 are FIRST CITY WA 10/31/91 5 primarily perched surface water wetlands that do not assist in maintaining streamflow, groundwater discharge is not an important function. However, Wetland 4 is an important discharge site due to its location in the historic Black River channel and its connection to a drainage channel that flows into the P-1 pond. Flood Storage By storing stormwater, wetlands can serve to reduce runoff peaks into slower discharges of longer duration. The flood storage value of a wetland varies with a number of factors, including topography; soils, surrounding land uses, and the type and amount of vegetation that is present. All of the wetlands on Tracts A and B occur in depressional areas. Flood storage values are significantly greater in Wetland 4 due to the large size of the system, association with other systems, and its location within the historic Black River channel. Wetlands 1, 2, and 3 provide some flood storage values, however, this is limited by the small size of these wetlands. Shoreline Anchoring This functional value is not applicable to the Black River Corporate Park project. Sediment Trapping Wetlands serve to purify water by removing sediments, excess nutrients, and toxic chemicals through a variety of mechanical, chemical,and biological processes. This function is particularly important when a wetland discharges into a watercourse. Wetland 4 provides significant water purification due to the dense emergent and shrub vegetation, slow movement of water, connection to a drainage channel which flows into the P-1 pond, and its large size. Wetland 3 is densely vegetated with emergent species which provide some water purification; however, the enclosed nature of this wetland limits this function. Wetlands 1 and 2 are limited by their small size and lack of connection with other systems. FIRST CITY WA 10/31/91 6 • Food Chain Support Wetlands can be highly productive ecosystems that are used by numerous species for nesting, spawning, rearing, and feeding. Primary productivity is usually high in wetlands and is generally highest in emergent wetlands that contain water year-round, because they support fast-growing species. Wetland 4 contains a mix of emergent and scrub-shrub community types. The year- round presence of standing water in some portions of the wetland and the variety of emergent species present augment food chain support functions. Water is present seasonally in Wetlands 1, 2, and 3, which are small isolated systems that are not expected to provide significant food chain support. Wildlife Habitat A number of species are dependent upon wetlands for all or part of their life cycles. The wildlife habitat value of a wetland is dependent in part on its structural and species diversity of plant communities, the proximity of desirable upland habitat, and surrounding land uses. Wetlands 3 and 4 are surrounded by dense Himalayan blackberry (Rubus discolor). This offers protection from human intrusion. Passerine and prey species utilize the dense. vegetation of Wetland 4 and open water present in Wetland 3 as cover, nesting, and feeding habitat. Additionally,the adjacent stream channel and riparian forest augment the excellent wetland habitat provided. A heron rookery has been observed north of the wetland area. Wetlands 1 and 2 may provide habitat for passerines when standing water is present. However, the small size of these wetlands limits the wildlife habitat value. Active Recreation, Passive Recreation, Heritage, and Education Wetlands can provide valuable opportunities for recreation and education, such as bird watching or studying a natural system. Wetlands 3 and 4 are not currently used for recreation or education due to the surrounding dense Himalayan blackberry which prevents human intrusion. Wetlands 1 and 2 are not used either, due to their disturbed nature and the absence of formalized opportunities for education or.recreation. Fishery Habitat This functional value is not applicable to the Black River Corporate Park project. FIRST CITY WA 10/31/91 7 IMPACTS TO WETLANDS First City Washington proposes to develop the Black River Corporate Park offices at this site. Facilities to be developed on Tract B include three office buildings and one parking garage.This construction would require placement of fill in approximately 0.14 acre of wetland. Placement of fill would occur in emergent Wetlands 2 and 3, as well as in scrub-shrub and emergent Wetland 1. The two emergent wetlands that would be filled are currently dominated by common cattail, soft rush, and reed canarygrass. The scrub-shrub and emergent wetland that would be filled is dominated by willow saplings, shrubs, and herbaceous species such as soft rush, orchard grass, and reed cannarygrass. The City of Renton will require an average 50-foot buffer with a 25 foot minimum. buffer. Mitigation Proposal Mitigation includes avoiding, minimizing, or compensating for adverse wetland impacts. According to the 1990 State of Washington Department of Ecology Model Wetlands Protection Ordinance, mitigation consists of the following steps, listed in order of preference: • avoiding the impact altogether by not taking a certain action or parts of an action; • minimizing the impacts by limiting the degree or magnitude of the action and its implementation, by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts; • rectifying the impact by repairing, rehabilitating, or restoring the affected environment; • reducing or eliminating the impact over time by preservation and maintenance of operations during the life of the action; • compensating for the impact by replacing, enhancing, or providing substitute resources or environments; or • monitoring the impact and the compensation project and taking appropriate corrective measures. The degree to which this mitigation plan adheres to this list is demonstrated in part by the project history. Initial site plans included filling all of the onsite wetlands and developing the entire property. The recognized value of the historic Black River channel FIRST CrIY WA 10/31/91 8 wetland prompted the project applicant to redesign the site plan layout to preserve this wetland. In addition, impacts to this wetland were further reduced through the implementation of wet ponds for detention and biofiltration swales to.improve the quality of stormwater runoff from the property by the development. The wetlands proposed to be filled were selected due to past grading activities and limited functional values. The proposed creation of additional wetland through mitigation involves restoring historic wetland. Environmental Goals The specific goals of the mitigation proposal are: • to compensate for 0.14 acre of fill in wetlands 1, 2, and 3, by creating 0.21 acre of wetland contiguous with Wetland 4 on Tract B; • to improve the structural and vegetative diversity in the wetland; • to improve the water flow within Wetland 4 and allow establishment of new wetland; • to provide an average 50-foot buffer with a 25 foot minimum; and • to avoid impacts to the upland forested areas during construction. Plan Overview Two areas are proposed for mitigation; both of these areas are contiguous with Wetland 4 and consist of filled portions of the historic Black River channel (Figure 3 at end of report). Each area will be prepared by clearing existing vegetation and over-excavating soils to a depth of 2 feet so the finished grade is level with the existing wetland. Topsoil will be imported and placed in the mitigation area to provide a suitable planting medium and to achieve desired finished grades. Following the preparation of soils, each area will be planted with native wetland vegetation. In addition, wetland buffers will be planted with shrubs and trees to provide additional protection to the wetland. After approval by all parties, detailed construction drawings will be developed by a landscape architect from Jones & Stokes Associates, who will work in close coordination with a wetland biologist and the project engineer. Existing Condition of Mitigation Areas Mitigation area 1 is a 50-foot-wide band of fill that has been previously placed across Wetland 4 (Figure 3). The fill currently supports an upland forest and shrub area FIRST CITY WA 10/31/91 - 9 dominated by black cottonwood, red alder and Himalayan blackberry with salmonberry and red elderberry commonly occurring. Mitigation Area 2 occurs along the southeastern wetland edge (Figure 3) in an upland forest and shrub area. Red alder, black cottonwood, and Himalayan blackberry are the dominant vegetation; evergreen blackberry (Rubus laciniatus) occurs occasionally throughout this area. Fill was observed throughout Mitigation Area 2. Detailed Work Plan Topography and Grading. To achieve elevations which would match those of the surrounding wetland, fill would need to be removed. In Mitigation_Area 1, the fill and culvert would be removed by an excavator working from the upland areas at the west side of the mitigation site. Prior to the start of work, erosion measures would be in place to ensure that the fill removal would not allow soil to move into the wetland. The area would be over-excavated by approximately 2 feet to allow for soil rebound and the placement of about 18_inches of topsoil. This topsoil will be compacted to 85% proctor density. Side slopes between the upland and newly created wetland areas would match the surrounding In Mitigation Area 2, soil would be excavated by equipment working from the east side of the existing wetland. The site would be over-excavated by about 18 inches to allow placement of topsoil. This area will be slightly higher than Mitigation Area 1 to promote growth of species adapted to less saturated conditions. Side slopes between the upland and created wetland will be no steeper than 3:1. Hydrology. Hydrology has been called the "single most important factor to consider in designing and implementing restoration/creation projects for specific types of wetland • systems and their related functions," (Erwin 1990). The premise of the mitigation project is that the greatest opportunity to achieve the proper hydrologic regime is to locate areas that once functioned as wetland, but have since been filled. If the fill is removed and a suitable planting medium is established, the original hydrologic conditions will promote the growth of wetland plants. The source of water for both mitigation areas will be the high groundwater levels which exist in the surrounding wetland. Removal of the culvert and associated fill will reestablish the direct surface water connection once present between the northern and southern portions of the historic Black River channel. Soils. All imported topsoils will be compacted as called out in the Topography and Grading section for Mitigation Areas 1 and 2. Soil compaction and grading will be such that proper planting conditions will be achieved. Vegetation. Mitigation Area 1 will be planted with emergent species tolerant of water regimes ranging from standing water during the nongrowing season and early growing season, to dry conditions by late summer. After grading, the area will be hydroseeded with a mix containing meadow foxtail (Alopecurus pratensis), colonial bentgrass (Agrostis tenuis), FIRST CITY WA 10/31/91 10 red fescue (Festuca rubra), and marsh speedwell (Veronica scutellata) (Table 1). This area will be planted with a mixture of emergent species and a few shrubs. Emergent species to be planted include soft rush, common water plantain (Alisma plantago-aquatica), slough sedge (Carex obnupta), small-fruited bulrush, and hardstem bulrush (Scirpus acutus) (Table 1). The outer edge of Mitigation Area. 1 will be planted with a few red-osier dogwood and salmonberry. Shrubs will add an element of structural diversity to this area, which will increase opportunities for wildlife. The black cottonwood and red alder that presently occur in Wetland 4 are expected to provide an adequate seed source for re- establishment of these species. A wetland scrub-shrub community will be planted in Mitigation Area 2. The goal of creating scrub-shrub habitat is to increase habitat diversity in the wetland. Species to be planted include salmonberry, red-osier dogwood, and willow (Table 1). A few Oregon Ash trees will also be planted in this area. Mitigation Area 2 will also be hydroseeded prior to planting; hydroseed will help stabilize soils during the period before trees and shrubs become established. All plant species used in the mitigation areas will be acquired from commercial suppliers in the Pacific Northwest region. This region is defined as Washington, Oregon, Idaho, Montana, and British Columbia. If any of the species mentioned in this plan are not available at the time of construction, substitutions will be recommended by the wetland biologist. Limiting the plan to commercially available species prevents the practice of collecting from existing wetland sites. Limiting the procurement area to the Pacific Northwest should help ensure that species used are adapted to this region. Post-Construction Functional Values of Wetlands. The following is a discussion of the expected functional values of the wetlands after construction of the project, as well as mitigation areas. Post-construction functional values for Wetlands 1, 2, and 3 will be permanently lost due to the proposed placement of fill. Post-construction functional values for Wetland 4 will be affected by the proposed creation of two mitigation areas contiguous with Wetland 4. The creation of two mitigation areas contiguous with Wetland 4 increases wetland size, community diversity, and provides surface water connection between the northern and southern portions of Wetland 4 (Figure 3). These factors augment flood storage, sediment trapping, and food chain support. The mitigation areas will be approximately 0.21 acre larger than the existing Wetland 4 acreage;therefore,the flood storage capacity will increase proportionally. There may be an initial reduction in food chain support and sediment trapping values until vegetation in the mitigation area becomes established. However, because the total wetland area will be slightly larger after mitigation, functional values should eventually increase proportionally to the increase in size and planting with faster growing emergent species. Several functional values are not intended to be goals of the mitigation areas. Post- - construction groundwater discharge and groundwater recharge values are expected to be similar to existing functional values. Shoreline anchoring and fishery habitat functional. FIRST CITY WA 10/31/91 11 Table 1. Planting List for Black River Corporation Park Mitigation,and Buffer Areas Mitigation Mitigation Buffer Area No. 1 Area No. 2 Area Trees Oregon ash (Fraxinus latifolia) X Big-leaf maple (Acer macrophyllum) X western red cedar (Thuja plicata) X Shrubs red-osier dogwood (Cornus stolonifera) X X salmonberry (Rubus spectabilis) X X willow (Salix spp.) X vine maple (Acer circinatum) X hazelnut (Corylus cornuta) X Douglas' hawthorn (Crataegus douglasii) X salal (Gaultheria shallon) X Herbs soft rush (Juncus effusus) X common water plantain (Alisma plantago- X aquatica) slough sedge (Carex obnupta) X small-fruited bulrush (Scirpus microcarpus) X hardstem bulrush (Scirpus acutus) X Hydroseed Mix meadow foxtail (Alopecurus pratensis) X X colonial bentgrass (Agrostis tenuis) X X red fescue (Festuca rubra) X X marsh speedwell (Veronica sutellata) X X FIRST CITY WA 10/31/91 12 values do not apply to the proposed development of the Black River Corporate Park property. Due to development of the site and associated increase in activity, wildlife values onsite will likely be permanently reduced. Buffers. Buffer areas around wetlands can enhance wetland functional values by reducing opportunities for human intrusion and by providing additional wildlife habitat opportunities. The City of Renton will require that a minimum 25-foot undisturbed buffer be maintained around all wetlands. Additionally, all currently unvegetated buffer areas will be planted with shrub and tree species. Planting buffers will increase wildlife habitat values and reduce opportunities for human intrusion. Species proposed for buffer enhancement areas include western red cedar (Thuja plicata), big-leaf maple (Acer macrophyllum),.vine maple(Acer circinatum),hazelnut(Corylus cornuta),Douglas'hawthorn(Crataegus douglasii), and salal (Gaultheria shallon). Performance Standards The proposed length of time for mitigation compliance is 3 years. This will allow planted species to become established and increase in size. Survivability of planted species is expected to be 80% or greater by the third year. If this survivability is achieved and the plants are determined to be healthy and vigorous, then the wetland mitigation will be judged successful. Monitoring Program Monitoring during construction will be conducted by the landscape architect responsible for designing the construction documents for the wetland mitigation. A 1-year maintenance period will require the landscape contractor to care for new plantings and replace plants if total mortality exceeds 20%. Post-construction monitoring will be conducted by the wetland biologist for 3 years. Annual visits to the site during the growing season will be conducted to evaluate the condition of the wetland. Planted species within the wetlands will be evaluated for health and vigor, and photograph points will be established. An annual report will be prepared by the wetland biologist and submitted to the City of Renton to ensure tracking of the project. A summary report will be prepared at the end of the third year. Contingency Plan The purpose of a contingency plan is to outline opportunities available if the monitoring program indicates failure of the mitigation. All contingencies cannot be anticipated; however, any problems that occur will be evaluated in the field by a wetland • biologist and/or landscape architect specializing in wetland design, and appropriate corrective action will be recommended. FIRST CrFY WA 10/31/91 - 13 Performance Bond A performance bond may be required by the:City of Renton. This bond would be of an amount sufficient to cover the cost of the• proposed mitigation and potential contingency. It may be held for 3 years or until the project is determined to be successful by city staff. CITATIONS Adamus, P. R. 1983. A method for wetland functional assessment. Volumes 1 and 2. Pages 431-433 in Department of Transportation, Federal Highway Administration. (FHWA-IP-82-24.) Office of Research, Environmental Division. Washington DC. Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LaRoe. 1979. Classification of wetlands and deepwater habitats of the United States. (FWS/OBS-79/31.) U.S. Fish and Wildlife Service, Northern Prairie Wildlife Research Center. Jamestown, ND. Erwin, K. L. 1990. Wetland evaluation for restoration and creation. Pages 429-458 in Kusler, J. A. and M. E. Kentula (eds.) Wetland creation and restoration: the status of science. Island Press. Washington DC. King County Planning Division. 1981. Department of Planning and Community Development. King County wetlands inventory. Seattle, WA. Sather, J. H., and R. D. Smith. 1984. An overview of major wetland functions and values. (NWS/OBS 84/18.) U.S. Department of the Interior, Fish and Wildlife Service. Washington, DC. FIRST CITY WA 10/31/91 14 Attachment A • ATTACHMENT A Wetland Report. This report presents the results of a wetland evaluation conducted at your request by Jones & Stokes Associates on March 25, 1991. The site, which is located north of the junction of Oaksdale Avenue Southwest and Southwest Seventh Street in the City of Renton in Section 13, Township 23 North, Range 4 East of King County, Washington (Figure 1). Based on this investigation, four wetlands were determined to be present. Methodology Wetlands at the site were delineated using the methodology outlined in the Federal Manual for Identifying and Delineating Jurisdictional Wetlands (Federal Interagency Committee for Wetland Delineation 1989). This document represents an interagency effort whereby the U.S.Fish and Wildlife Service(USFWS),U.S.Soil Conservation Service(SCS), U.S. Army Corps of Engineers (Corps), and the U.S. Environmental Protection Agency (EPA) present a unified approach to wetland delineation. This approach requires examination of three wetland parameters: soils, hydrology, and vegetation. For an area to be considered wetland, a positive indicator for all three of these parameters must be present. Each parameter is discussed further in the following paragraphs. Hydric (wetland) soils are defined as those soils which are saturated, flooded, or ponded long enough during the growing season to develop anaerobic conditions that favor the growth and regeneration of hydrophytic(wetland)vegetation. Hydric indicators include low soil chroma, mottles, gleying, and high organic content. During the field investigation.. soils were sampled with a hand-held soil auger and examined for hydric indicators. Areas possessing wetland hydrology are inundated either permanently or periodically, or the soil is saturated to within 1 foot of the surface for a week or more during the growing season. The site was examined for indicators of wetland hydrology, including ponding, soil saturation,water-stained leaves, and cracking at the soil surface. In areas where no positive indicators of wetland hydrology were observed but positive wetland indicators were present for soils and vegetation, wetland hydrology was assumed to be present. Hydrophytic plants are those plants that grow in water or in a substrate that is at least periodically saturated. Commonly occurring plant species have been rated by the USFWS as to their frequency of occurrence in wetlands. The rating system uses a range from obligate upland (plants that occur in wetlands less than 1% of the time) to facultative (those occurring 33% to 66% of the time) to obligate wetland (those occurring more than 99% of the time). For an area to be considered a wetland vegetative community, 50% or more of the dominant species in that area must be rated as facultative or wetter. Vegetation throughout the site was examined and data regarding vegetation, soils, and hydrology were recorded on data forms that are included with this report. 1 Eartington Golf Course • :> r>.....�: SW 7th St. SITE II TUKWILA 40S sotot e/wets/.sty RENTON CD Longaaes Race Track -33 t67 S A 0 .s - 1 t I MILES Figure 1 . . Vicinity Map 2 Wetlands were identified onsite with orange and black striped flagging affixed to vegetation at a height of 4 to 6 feet at 20- to 50-foot intervals. It is understood that the flagged wetland edge will be professionally surveyed. Site Conditions The subject property is divided into two parcels designated. Tract A and Tract B. Tract A is a parcel of 12.71 acres west of Tract B, which is a parcel of 15.7 acres situated in the City of Renton, King County, Washington. Springbrook Creek divides Tracts.A and B. The property is bordered by Naches Avenue Southwest and Southwest Seventh Street to the east, King County Pump Station to the west, and Oaksdale Avenue Southwest to the south. Riparian forest and a pump station pond (P-1 pond) borders the property to the north. The topography of the project site is generally flat. Portions of both parcels were previously filled and graded in 1984, 1987, and 1988. The majority of Tract A is upland and primarily vegetated with herbaceous species. Diverse upland and wetland vegetative communities typify Tract B. Wetlands Four wetlands were identified on the subject property (Figure 2). Based on the USFWS Classification scheme (Cowardin et al. 1979), wetland habitat at the site would be classified as palustrine forest, palustrine scrub-shrub and emergent. These wetlands were not identified during the King County (1981) wetland inventory. Vegetation, soils, and hydrology of the wetland areas are described in the following sections. Soils on Tract A have been mapped by the SCS as Puyallup fine sandy loam and Tract B has been mapped as Woodinville silt loam. Puyallup fine sandy loam is not listed as hydric by the SCS and is described as a well drained soil formed in alluvium, typically found in valley bottoms. Woodinville silt loam is described as a poorly drained soil formed in alluvium, typically found in stream bottoms and is listed by the SCS as hydric. As noted above, the majority of both sites have been filled. Wetland 1. This wetland occurs as an enclosed depression south centrally located on Tract A. A mixture of palustrine scrub-shrub and emergent communities typify this wetland. The wetland has resulted from surface water collecting in a depression resulting from past grading. The shrub portion of this wetland is dominated by willow saplings (Salix spp.); red alder saplings(Alnus rubra) and red-osier dogwood (Cornus stolonifera) occasionally appear. Soft rush (Juncus effusus), orchard grass (Dactylis glomerata), and reed canarygrass (Phalaris arundinaceae) dominate the herbaceous layer in this wetland. 3 • • • e>........Aillik. • (,) ..01111 . P-1 PUMP �— PLANT L, IL — P-1 POND' — f� ��� • z,), 3 NORTH i / �`N i a' 1.1 Acre ' / �1 d Wetland �' o be retained APPROX.400' Monster Road ' %c,y TRACT B/ '�� m,z 1 p ; ; S s.w.3eventh SI.Ai Legend 44 0.04 Acre 0.1 Acre Oaksdale Ave S.W. 6�• Wetland FA Project Arua Wetlands (To be filled) YY����11 Woliands total) To be filled) — 1 racl A and 9 noundarios METRO • Figure 2. Wetlands on Tracts A and B and Adjacent Areas ....±] Soils in this wetland were observed to be low chroma silty fine sands (10YR3/1 and 10YR 5/1) with orange mottles (7.5YR 4/6). The soil most likely consists of fill excavated from the adjacent P-1 storage pond. The fill has been graded flat and tightly compacted. Approximately 4 to 6 inches of standing water was observed in this wetland at the time of the field investigation. Approximately 1 to 2 inches of water flows east in a poorly defined ditch and enters the wetland along the western wetland edge. Precipitation unable to infiltrate the compacted fill soils is the primary source of water. Wetland 2. This palustrine emergent wetland is located along the eastern edge of Tract A. Wetland 2 is an enclosed depression bordered by an embankment along the eastern edge. Similar to Wetland 1, this wetland formed as the result of precipitation collecting in a depression caused by the uneven grading of fill soils. Soft rush is the dominant emergent vegetation throughout this wetland. Vegetation in this wetland is sparse and lacks diversity. Soils in this wetland were observed to be low chroma silty sands (10YR 3/2) with light brown mottles (10YR 3/3). Approximately 4 inches of standing water was observed at the time of field investigation. Precipitation is the primary source of water in Wetland 2. Wetland 3. This wetland is an enclosed depression, south centrally located on Tract B. Palustrine scrub-shrub and emergent vegetative communities typify this wetland. Dominant shrub vegetation consists of willow saplings. Reed canarygrass and common cattail(Typha latifolia) dominate the emergent vegetative layer within this wetland; soft rush occurs occasionally. Soils in this wetland were observed to be low chroma loams (10YR 3/2)with mottles. Approximately 1 to 2 inches of water was observed in this wetland at the time of field investigation. Standing water is primarily due to storm run-off and precipitation. Wetland 4. This wetland is a drainage swale located within the historic Black River channel along the northern and eastern property edge of Tract B. The wetland is approximately 15 feet below the elevation of the surrounding fill and forest. Wetland 4 supports diverse palustrine scrub-shrub and palustrine emergent vegetative communities. Dominant shrub vegetation in the southeastern portion of this wetland consists of willow saplings, red alder saplings, and salmonberry (Rubus spectabilis). Salmonberry continues to dominate the shrub community throughout this wetland. Red elderberry (Sambucus racemosa), Oregon Ash (Fraxinus latifolia), and red osier dogwood occur occasionally throughout the wetland. A small canopy layer is established within the northeastern portion of the wetland and is dominated by black cottonwood (Populus 5 trichocarpa) and red alder. Common cattail, small-fruited bulrush (Scirpus microcarpus), purple loosestrife (Lythrum salicaria), soft rush, and reed canarygrass are the dominant emergent vegetation throughout the wetland. Soils within this wetland were observed to be native black mucks to depths over 3 feet with a color of 10YR 2/0 and no mottles. Approximately 6 to 12 inches of standing water was observed throughout the majority of the wetland at the time of the field investigation. Surface saturation was observed in areas lacking inundation. The water source for this wetland appears to be high groundwater levels. Water in the wetland flows slowly north to a small channel which connects to the P-1 storage pond. Wetland Functional Values Wetlands are considered to be valuable resources due to their functions in water pollution control, flood control, wildlife habitat, and as aesthetically pleasing open spaces. Wetlands identified on Tract B of this site serve to provide many of these functions; the Tract A wetland provides minimal functions. Wetlands serve to purify water by removing sediments, excess nutrients, and toxic . chemicals through a variety of mechanical, chemical, and biological processes. Wetland 4, on Tract B, has excellent biofiltration potential due to the dense vegetation, diversity of vegetation, the large size of the wetland system, and its connection with a drainage channel that flows into the P-i storage pond. The lack of a distinct water inlet to the wetland, however, limits the actual biofiltration function of the wetland. Wetland 3 is also densely vegetated with a variety of emergent species and has some biofiltration qualities. The lack of a surface water inlet and outlet, however, severely limits the hydrologic functions of the wetland. Although Wetlands 1 and 2 of Tract A are vegetated primarily with emergent species, their small size and lack of association with other systems significantly limits potential biofiltration. The wildlife habitat value of a wetland is dependent in part on the structural and species diversity of plant communities, the proximity of desirable upland habitat, and surrounding land uses. The diversity of the vegetative communities of Wetland 4 provide excellent habitat for passerine and prey species. The proximity of Wetland 3 to Wetland 4, in addition to the diverse emergent vegetation and presence of open water, also provides moderate to excellent wildlife habitat. Furthermore, the adjacent riparian forest, stream channel, and heron colony, as well as protection from human intrusion by surrounding dense blackberry, greatly enhance the wildlife habitat these wetlands provide. Passerines may utilize Wetlands 1 and 2 when standing water is present; however, the small size of these wetlands greatly limits habitat for wildlife. 6 The flood storage value of a wetland varies with a number of factors, including topography, soils, surrounding land uses, and the type and associations with other aquatic systems. Flood storage values are significant for Wetland 4 due to the large size, association with other systems, and its location within the historic Black River channel. The proximity of Wetland 3 to Wetland 4 and the depressional topography enhance the Wetland 4 flood storage value. Wetlands 1, 2, and 3 provide some storage values due to their depressional topography, but are limited by their size. Impacts Development of the property would result in filling:the two wetlands on Tract A (Wetlands 1 and 2) and the filling of Wetland 3 on Tract B (Figure 2). This would result in the loss of 0.14 acres of wetland. Grade at the location of the wetlands will be raised approximately 2 feet, resulting in the placement of approximately 450 cubic yards of fill in the wetlands. No filling of Wetland 4, the remnant of the Black River channel, is proposed. A buffer averaging 50 feet in width will be maintained around this wetland system. Conclusions Evaluation of this site using the Unified Federal Methodology shows that four wetlands are present; two within Tract A and two within Tract B. All four wetlands identified would be classified as palustrine emergent; Wetlands 1, 3, and 4 also include palustrine scrub-shrub vegetative communities. Wetland 4 provides substantial functions and values. The Washington Department of Ecology Model Wetland Ordinance categorizes wetlands into four classes, with Category 1 wetlands being the most unique. Based on this system, Wetlands 1, 2, and 3 would be rated Category 3 or 4, while Wetland 4 would be rated Category 1 or 2. Citations Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LeRoe. 1979. Classification of wetlands and deep water habitats of the United States. U.S. Fish and Wildlife Service Publication. FWS/OBS-79/31. Federal Interagency Committee for Wetland Delineation. 1989. Federal manual for identifying and delineating jurisdictional wetlands. U.S. Army Corps of Engineers, U.S.Environmental Protection Agency, U.S. Fish and Wildlife Service, and U.S.D.A. Soil Conservation Service, Washington, DC. Cooperative technical publication. King County. 1981. King County wetland inventory. 7 JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW • Project/Site: Wetland Field Investigator(s): Denman/Edwins Date: 3/25/91 County/City: :King County Wetland #: Plant Community: PSS/PEM Plot #: Weather: ,vercast • VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Salix spp. sapling. FAC-OBL shrub 2. Phalaris arundinacea, FACW, herbaceous 3. Juncus effusus, FACW+, herbaceous 4. 5. 6. 7. 8. 9. Percent of dominant species that are OBL, FACW, and/or FAC: 100% Is the hydrophytic vegetation criterion met? yes Rationale: All dominant spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam SCS hydric list? yes Is the observed soil a Histosol? n o Depth Matrix Mottle 10" lOYR 5/1 Gley Texture 7.5YR 4/6 no silty fine sand Other hydric soil indicators: Is the hyd.-:c soil criterion met? yes Rationale: chroma Comments: fill material HYDROLOGY • Is the area Inundated? yes Depth of water: 6" Is the soil saturated? yes Depth to water: surface Other field evidence of surface inundation or soil saturation: Is the wetland hydrology criterion met? yes Rationale: saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE is the sample plot a wetland? ye Comments: • JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Black River Field investigator(s): Denman/Edwins Date: 3/25/91 County/City: King County Wetland #: upland Plant Community: herbaceous upland «'either: '+ercast Plot#: adjacent to wetland VEGETATION • Dominant Plant Species, Indicator Status, Stratum 1. Agrostis spp., FAC-FACW, herbaceous 2. Dactylis glomerate, FACU, herbaceous 3. 4. 5. 6. 7. 8. 9. Percent of dominant species that are OBL, FACW, and/or FAC: 50% Is the hydrophytic vegetation criterion met? yes Rationale: 550% of spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? no SCS hydric list? yes Depth Matrix Mottle 10" lOYR 3/3 G1Qy Texture yes no silty fine sand Other hydric soil indicators: Is the hydric soil criterion met? no Rationale: lack of chroma Comments: fill.material HYDROLOGY Is the area inundated? no Is the soil saturated? no Depth of water: Depth Other field evidence of surface inundation or soil saturation:to water: Is the wetland hydrology criterion met? no Rationale: lack of saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE ik the sample plot a wetland? nC t omments: JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denman/Edwins Date: 3/25/91 County/City: King County Wetland #: I Plant Community: PSS/PEM Plot #: 2 • Weather: weTeas: VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Salix spp. sapling, FAC-OBL, shrub 2. Phalaris arundinacea, FACW, herbaceous 3. Juncus effusus, FACW+, herbaceous 4. 5. 6. 7. 8. 9. _ Percent of dominant species that are OBL, FACW, and/or FAC: 100% Is the hydrophytic vegetation criterion met? yes Rationale: All dominant spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam SCS hydric list? yes Is the observed soil a Histosol? no Death Matrix Mottle 0-9" 10YR 3/2 yes no Texture fine sand Other hydric soil Indicators: Is the hydric soil criterion met? yes Rationale: mottles Comments: fill material HYDROLOGY Is the area inundated? yes Is the soil saturated? yes DeptDepth of water: 4" Other field evidence of surface inundation ,or soil saturation: to water: surface Is the wetland hydrology criterion met? yes Rationale: saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? yes Comments: Other spp. include Ranunculus repens. JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denman/Edwins County/City: King County Date: 3/25/91 Plant Community: PEM Wetland #: 2 Weather: overcast Plot #: ! VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Juncus effusus, FACW+, herbaceous 3. 4. 5. 6. 7. 8. 9. Percent of dominant species that are OBI, Is the hydrophytic vegetation criterion ' FACW' and/or FAC: 100% Rationale: All dominant s met. yes pp. are FAC or wetter. y SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Ifistosol� SCS hydric list? yes Dentbi n o matrix 0-8" lOYR 3/2 awls. lOYR 3/3 fatr exture no silty sand Other hydric soil indicators: Is the hydric soil criterion met? yes Rationale: mottles Comments: fill material HYDROLOGY Is the area inundated? yes • Is the soil 'saturated? yes Depth of water: q' Other field evidence of surface inundation or soil saturation: Is the wetland hydrologyDepth to water: surface Is Rationale:the criterion met? yes saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? yes `•.ummentc: JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field-Investigator(s): Denman/Edwins Date:County/City: King County lnd #: /91 Plant Community: herbaceous- upland Wetland 3 #: upland Weather: overcast Plot#: adjacent to wetland VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Agrostis spp., FAC-FACW, herbaceous 2. Plantago lanceolate, FACU+, herbaceous 3. 4. ,. 6. 7. 8. 9. Percent of dominant species that are OBL, FACW, and/or FAC: 50% Is the hydrophytic vegetation criterion met? yes Rationale: SS0%o of spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? n o SCS hydric list? yes Depth Matrix t 10" lOYR 3/2 no QUA exture no gravelly sand Other hydric soil indicators: Is the hydric soil criterion met? no Rationale: lack of mottles Comments: fill material HYDROLOGY Is the area inundated? no Is the soil saturated? no Depth of water: Depth Other field evidence of surface inundation or soil saturation:to water: Is the wetland hydrology criterion met? no Rationale: lack of saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? no Comments: • JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denm an/Ed wins Date: 3/25/91 County/City: King County Wetland #: 3 Plant Community: PSS/PEN1 Weather: overcast Plot #: ; VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Salix spp. sapling, FAC-OBL, shrub 2. Phalaris arundinacea, FACW, herbaceous 3. Typha latifolia, OBL, herbaceous 4. 5. 6. 7. 8. 9. Percent of dominant species that are OBL, FACW, and/or FAC: 100% Is the hydrophytic vegetation criterion met? yes Rationale: All dominant spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? n o SCS hydric list? yes Depth Matrix Mottle 10" 10YR 3/2 Gley loam yes no loam Other hydric soil indicators: Is the hydric soil criterion met? yes Rationale: mottles Comments: fill material HYDROLOGY Is the area Inundated? yes Is the soil saturated? yes DeptDepth of water: 1-2" Other field evidence of surface inundation or soil saturation: Is water. surface Is the wetland hydrology criterion met? yes Rationale: saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland:' Comments: JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denman/Edwins County/City: King County Date: 3/25/91 Plant Community: herbaceous upland Wetland #: upland Weather: overcast Plot#: adjacent to wetlane VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Cirsium arvense, FACU+, herbaceous 2. Plantago lanceolata, FACU+, herbaceous 3. 4. 5. 6. 7. 8. 9. Percent of dominant species that are OBL, FACW, and/or FAC: 0% Is the hydrophytic vegetation criterion met? no Rationale: None of the spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? n o SCS hydric list? yes Depth Matrix 10" lOYR 3/3Mottle Glev Texture no no gravelly sand Other hydric soil indicators: Is the hydric soil criterion met? no • Rationale: lack of chroma Comments: fill material HYDROLOGY Is the area inundated? no Is the soil saturated? no Depth of water: ept Other field evidence of surface inundation or soil sat baton to water: Is the wetland hydrology criterion met? no Rationale: lack of saturation and inundation • JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? no .omments: JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denman/Edwins County/City: King County Date: 3/25/91 Plant Community: PSS/PEM Wetland #: 4 Weather: overcast Plot #: I VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Saliz spp. sapling. FAC-OBL, shrub 2. Phalaris arundinacea, FACW, herbaceous 3. Typha latifolia, OBL, herbaceous 4. Juncus effusus, FACW+, herbaceous S. • 6- 7. 8. 9. Percent of dominant species that are OBL,Is the hydrophytic vegetation criterionFAC Ws and/or FAC: 10090 Rationale: All dominantmet? yes spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? n o SCS hydric list? yes peuth 10" 10Almitb ottle )e no no Tee no "muck" Other hydric soil indicators: Is the hydric soil criterion met? yes Rationale: chroma Comments: HYDROLOGY Is the area inundated? no Is the soil saturated? yes Depth of water: Other field evidence of surface inundation or soil saturation: on epth to water: Is the wetland hydrologysurface Rationale: saturation criterion met? yes JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? yes Comments: r JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denman/Edwina .County/City: :King County Date: 3/25/91 Plant Community: PFO/PSS Wetland # 4 Weather: overcast Plot #: 2 VEGETATION Dominant Plant Species, Indicator Status, Stratum 1. Alnus rubra, FAC, canopy 2. Populus trichocarpa, FAC, canopy 3. Rubus spectabilis, FAC, shrub 4. 5. 6. 7. 8. 9. Percent of dominant species that are OBL, FACW Is the hydrophytic vegetation criterion met? ' and/or FAC: 100% Rationale: All dominantyes spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? SCS hydric list? yes e Matra tr n o t 10" a 1OYR 2/0 t t no . T xtur no "ruck" Other hydric soil indicators: Is the hydric soil criterion met? yes Rationale: chroma Comments: HYDROLOGY • Is the area Inundated? yes Is the soil saturated? yes Depth of water: 6" Depth Other field evidence of surface inundation or soil saturation:to water: Is the wetland hydrologysurface Rationale: saturation an inundation met? yes inundation JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? Comments: Other spp. include: SAcr;,.. SAR-,. RILA, and PAAR. JONES & STOKES ASSOCIATES WETLAND DELINEATION DATA FORM ROUTINE ONSITE DETERMINATION FOR Client: FCW Project/Site: Wetland Field Investigator(s): Denman/Edwins County/City: King County Date: 3/25/91 Plant Community: upland shrub Wetland #: upland y weather: ,,sac: Plot*: adjacent to wetland VEGETATION a', Dominant Plant Species, Indicator Status, Stratum C?A a I. Rubus discolor, FACU-, shrub as � . 3. ' 4. - c. 5. 6. 7.8. 9. • Percent of dominant species that are OBL, FACW, and/or FAC: 0% Is the hydrophytic vegetation criterion met? no Rationale: None of the spp. are FAC or wetter. SOILS SCS Series/Phase Woodinville silt loam Is the observed soil a Histosol? no SCS hydric list? yes Denth Matrix Mottle 10" 10YR 3/3 no no loam u re no loam Other hydric soil indicators: 104 Is the hydric soil criterion met? no Rationale: lack of chroma Comments: HYDROLOGY Is the area inundated? no Is the soil saturated? no Depth of water: DeOther field evidence of surface inundation or soil sat rat n to water: Is the wetland hydrology criterion met? no Rationale: lack of saturation and inundation JURISDICTIONAL DETERMINATION AND RATIONALE Is the sample plot a wetland? no Comments: • . . . ..i•, • ....... . .., • . . . • , . . , , •. . . . •.•-• • - - 11•1•1111 .1••••••••=0 .... • . , .. . • , '. i - _ ••• • 4/ . 1 di.: / . • 'i • • • ,•/. 11 ---/./1/: / .. . . . . . i ii • .. 1. .' 4 -..,,... • . . • .. 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C, a. ••• I, , •e to ,.. .' 7. -k-''''. ---77... •tit L'••••.,tti N 4, -- . e / TRACT B .. 1 , . . .,. . ! .: -,..11,442,.,....- h.-. 1 • 4..- ., ' : - --,-- BLACKRiVER V\I ..;• , .. ....... ..-_ • , • .. ., , ,... .., ,-- . , • „ - . f',-..r.':_: •,..r.'- '''• . —.••••'t• 'i ' . .t.z., . , ....-.i. -• .:- Ipn .: . CORPORATE .PARK. : ,... RENTON - ---, ' 1.t. \ . • 1 .• / V /. 1.\ ''''' ''*' '" FIRST CITY DEVELOPMENTSz IZEZRE:=M1 •. • , C • EXHIBI 'il: ,... , .. , . _ MAR. 1 .3 1992 ',.--- .:,: • WASFIcloNRGpT.Olenl'\yrAon\IFC cq' .:1V4TISc:ON;4 SITE PLAN • ,. '...•1••.1.41 11...1 1•0 I.* . -4 kL7-tti V t-Q ': . ,i Gam ••1.4.,el•: . •• ' I '' I'''"*".}14 'i•';'"' , . . City Owned Shoreline Property; a a) PO„-. L I —� -��_ DelenttIon Pond ..•"" PpG°•s9i �%i r�-s �s. • C.O t moo: ..• ,%* % / t ta�\Z C` ) - �.. i `—� _ / il, . ,� �/ \ 3 .� 111 a "slLi. \�.a, am., / / �r ll ' .. ,U fn c nl-• °'t,ffa•r f"Lae v / 1` a r o o :; :1. a• • � � •- iii,r.,.-1,,,/ - ," aL ....i , 1 , , , ,, \ \��'l :`�, (noftarf u+ ._ ---- sTa4?S`F' Q,4' • •� yam,tip i �-`) / / t �y'z ik'!'�'�{�Iu'' ° 'u,�� • \\ - t"1{1 • p `i • a /.. / '/ ,tl; • S 45k.;- L1 ' 7. ________ _ ` Brz� ; at •�°�•A►E�,i••� / ` I. I it i bk . . , fryr _7 4.O\b\ ���•9•••r �I l .w u;...nruw :h1 .£iw. r.• = E �f , .: • ` ^. = fA• . :4., TRACT%1' (l\I' t Qo �'� \�I ` Dom. ; •;1 1 - _ ■1.4 Awoa L, 1li,13:i., `3; l: , E. --—1 :___2__-.'i-_-4___,__:..1.. 1.1--1,1 •( .•.• /. ifs, �CS.27• •fa«• I :_ ,,TRACT + _- - - - AN��E DIIA;la�, }------.--' T=Y A.' _ _ r 'rf-0 KtNr 6L ;SITE •PLAN i BLACKRIVER ExistingCurb Cut • 'EXHIBI V\i/ I - .'CORPORATE PARK \ ��J�\� pENTON, WASHINGTON j S ! - FIRST CITY WASHINOTON,INC.' ' - . `" " - •.:.: • La _ - ..-. _..• PHASE VIII •. _ l • V i : ...I,..... � -,,, 20 x75 Shoreline Access. Easement a' •�•f __. _ . . . SITE PLAN h n'.c.: \ i ..L i .,.. .•..... ._, , 4.Qt.cii.s. ,......!*: - ERON ROOKER ii ,,.. . . , . .. RIPARIEST PRESERVE 4,40 ./ • s, ...., ----..../ 0. 4t,- . .• . • ir••• 4 di ftitit• II e • , i,e4T01,- .. .4 111: 1 . 'IA or•-= . Ibtei, 6M 401.t...,/. ) tik 000,•'40• - (OW -- ' ,14 . 1.. VACANT i . . . _.i.-.-. • / 41111• . ilk SIP - \4\S111101, i ....e 1 • • ., • 4 it OFFICE •• "..." 11 ?....... -,, • 7 Ift •. • • 4 I... ...., •....., .\ . :., 111111 irk', ...• , ,. .. a i 014 .- ...•-- -,,,,,,, ......, • .....- -_, - - — •. _ i ,Ater.„.. It.......,,,,..,,wiw..... ,,,,r- — . ,...... -,•, ...,3,......,..„ , ..,._.... ...,.......„.„........... .,,,.....,,,,,...„ .. _ , r p.riv . "kr,di.,........,11 iik........................... ,• 'IP" a . IN V je. ' . 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OFFICE viCINITY MAP: MEM C'SEWAGE TREATMENT PLANT %V 1" 200',..• - ........c.' . .,*1.'.. .1!iii.. • 'sof NORTI- .• . • •••. ,.,.... ...... ....._ - EXHIPTT TTr sA /07- 11---ITEM - � ' .. • .. , i 1 - 1_11...:, _______a. • , , WEST ELEV TIQli.__.__ — --- — Tinted Glass aintConcret .anels ■■�1...1�! �� a • " A I mom= _i„ .Ip . NORTH ELEVATION SOUTH ELEVATION {���� artimmim iii M� ft .. _ - moo - EAST ELEVATION TRACT "B" .. . , 41.zs- ,3 ....,>. TE PARK Phase VII BLACKRIVER CORPORA ofe ,r, First City Washington, Inc. G ��� Oa 10-31-91 C 3��� :,_,`' i 4 Stor\,' Garace Elevations • NW88041 Scale: 1„=401 �,.�._..�....-.-. ._•._.-.�., .-. 1 .,- sue i 4E Fillk ii Sil .., S m f. Rym p.. 01 EXHIBT-1 IC ITEM SA /Of7 . Tinted Vision and Spandrel Glass r Mechanical Screen Typical F- _ill I—i-1—I—ITTTT� 1II l I l l 1 I 1 I l I �1 l +lr�l��l 1 1 .I 1 1 I 1 I -----' 1 1 1 - _ I l l fill �� [ I Ul I 1 l 1 1 I l 1 I I ) 1 1[�I � I 11i 1 I I 1 I 1 1 I 1 1 I 1 1 1 1 1 1 I 1 1 1 1 1 1 1 1 1 � �I ,-,,,,#_00 71 _ I _ II _ 1 ___y,/ ll I1 . — r i iiiii NORTH ELEVATION WEST ELEVATION ' Exterior Insulating Spandrel Panels __ I I 1 1 I 1 I J"1�'�[ 1 j I - _ 1-1 [ 1 1 { M� �� ■ XI 11 1 1 1 1 I 1 I L I l I 1 I 1 1 I I I II) j j 4. I li 110 _ c1. I��1III11 I 1 11 11 iii a a .i� �� esti.ii�. I i!' jill 1 1 o• i_ i mii , I I h NH _ TEl 1(1!d SOUTH ELEVATION EAST ELEVATION TRACT "B" E3LACKRIVER CORPORATE PARK Phase VII im...0.,„1 1°. '' First City Washington, Inc. _ 10-31-91 Jr Story Office Elevations (3L3G. "F") NW88041 Scale: 1"=40' 1-30-'91 el ITEM i . SA /0 41°...CS7 „.1 IIIIIMilmmi _ , 1 I I I I I I I I I I I I I ) I.a `4HI IIIII Milli ill1 1 11111H , 1 I _ 1 1 1 1 1 1 1 1 I I I I T ii l a 1 t I r I I rC_.__ , 1IT , 0 ii[11t ( � I I I l I i I 1 I I I Hit 1 4, 7 I. LP I I1 1 JJ LLJ I 1_�_Lri .+:. -I 1 , ;: , ; t - i I , . , t WEST ELEVATION SOUTH ELEVATION East Elevation Bldg C sim. Mechanical r en 1Exteri1 or Insulating Spandrel Pane -i -d Vision Glass -,' ' itionm,, ,,,:- —,, iiii 1 l 1I I I I I I I i 1 I I a sad IlltIII ( [ lI IlIl 1IIlIlIl [ 1- II: IICIl1I1 - 1 I I I f ) 1 t1+ I 1 l l I I I 1 I 1 1 I I 1 #\ lip- iP lit EAST ELEVATION NORTH ELEVATION West Elevation Bldg C Sim. TRACT 'A' BLACKRIVER CORPORATE PARK Phase VIII 1pfl _ First City Washington, Inc. mow► a sacra (--,...,\ 4 Story Office (BLDG. B bldg C sim.) 89017 Scale: 1"=40' 10-31-91 V\ t T1-117),TT ', 2 (0 .......„ .-.,..... t . p , 51P4. i 6 9'..-- dr, -;f: i1 ...... , 1. t . , . . _---- ____ —.".11111 . _ --- EN - -,___- ._____________-:...:=------- - - ahlrIL11111 { 1 a din ..ed hiNiiiiiiiiiiiiiiiii - -...- I f. Iii1 1 1 . IIIIIII II iiiiitiliii a III II . .. ion , , „ „ „ „ -, . 1111111111111111111111111111111111111Is 0111110 ' III ill • IIIII No MIMI ‘.P -4-• i - . . .. ' ,Nt-7---1-• . ...... -, . ... • EAST ELEVATION NORTH ELEVATION • •• Typical . ------, Mechanical Sgeen • erior ir-al. 'fly-Spandrel Panels ( Tinted Vision Glass ________----------- . -----, . . . ... • 11 [ 1 II 1j11.1111111i0 I • ' .. L . ii LH, SIM. 11111 .' 11 WEST ELEVATION SOUTH ELEVATION . . , . • -.• -, . , . . . ,- .: ..„, . TRACT "B" - .'5'• ' . + '. B I.AC K R 1 V E R CORPORATE PARK Phase VII , .....,, , r., ....,., ipon .... ,I.,...,,....- r , Q, .. .- ' First City Washington, inc. . . : ,:- -6,.., c---) , tozooRettrtytim - , , . --,1 11 atrihellgsbelsweg.. . . . 10-31-91. 4 Story. Office Elevations (BLDG.. "E") ; NW88041 Scqle: 1"=40' 1-30- 91 t i tiescr oil sA, ! sty Rvikii:::)... 07 I..- ,,... I • EYE TP l'- 7.'T'' - 7 _ ITEk 5* /tt74:1_ :} -Tinted Vision and Spandrel Glass Mechanical Screen /. - _ _-• - • --- -- - . --.-----:.--.-,-,-_____ _ __ _ --- - .. — _.....- -- - ------__ --__. _ .._..... . • • .-T:o.r. .,,_ - • . -o-rrt-rcr-Froi- Fit Iv nil Hu t III 1 I F111111-111H 1 I 11 EL • . • . hi Ti_t_i_l_i__V--1-13- 111111 ad . ma I qIIIIM ITILI I ---I __ HI 1 . , , .111 • -,. m 11111- 11111111111IIIHt11111111 ' IE ,I. ) .___ _...ey mu _ _ 11 _ 1 _ 1 1 I I_ I I I 1 F. 1ILL111 I I I I I I i III I I i I I 1_ 1 _ 1 1 I 11-I • .: NORTH ELEVATION . . . WEST ELEVATION - . . - . • • . ' . . . (7- Exterior Insulating Spandrel Panels • .. -----_.--, --- -- - .. ( _____. . . • _ ------ --- .. ._ . . ..._...... - -- -- • 11111111111 -1-4.„." m mmiiiimuminumilE Fil 1-Fit. - 1 1 • 1 Iiirmililrirar II r U NU Nina' 1_§ L. I : iralS111111111 In -01 -T :,. , do 1 . . -'... , dim =1" • ,id.- .,640,, ) . • * 1211111111111111I III I MI I illt , • nuncamni. I . T . . SOUTH ELEVATION . . . EAST ELEVATION ...- - • • . . . • _ . . TRACT "B" • . ., .._. , BLACKMER, CORPORATE PARK Phase VII . .,,...,,,,, . .r,•• - itk -c' *c) ''''''k.' I iacceuacrtiwitalt .,:' •47)0:N ',.le A First City Washington, Inc. _nvok,i-). 11,...%.*M 5 10-31-91 Story Office -.Elevations (3LDG. "Di') NW88041 Scale: 1"------40 1' -30-'91 ....--- OP 4 i deeeic100. sp : sifiii 4.46 Ille 1114M P " 0 m/ i aillii. 89 ' (rp--r-r-ram; .. Z.f..t.._L. 0_9- 0 Traffic and Parking Estimates For: BLACKRIVER CORPORATE PARK-Phases VII& VIII 12/11/91 LU LAND USE Variable Quantity Formula Vehicle ,Code Trips In Out Average Weekday Trips Per Trip Generation, 4th Edition*: General Office** EIS Building Size Assumptions: 710 Total Phase VII 1000 gsf 286.300 =EXP(0.751N(A)+3.77) 3,019 1,510 1,510 710 Total Phase VIII 1000 gsf 183.582 =EXP(0.751N(A)+3.77) 2,164 _ 1,082 1,082 Total-Both Phases 469.882 5,183 Proposed Building Sizes: 710 Total Phase VII 1000 gsf 286.300 =EXP(0.75'LN(A)+3.77) 3,019 1,510 1,510 710 Total Phase VIII 1000 gsf 128.000 =EXP(0.75'LN(A)+3.77) 1,651 825 825 Total-Both Phases 414.300 4,670 Calculated by Building: 710 Phase VII-Bldg.D 1000 gsf 91.550 =EXP(0.751N(A)+3.77) 1,284 642 642 710 Phase VII-Bldg.E 1000 gsf 78.350 =EXP(0.751N(A)+3.77) 1,142 571 571 710 Phase VII-Bldg.F 1000 gsf 116.400 =EXP(0.75'LN(A)+3.77) 1,537 769 769 Subtotals 286.300 3,964 710 Phase VIII-Bldg. B 1000 gsf 64.000 =Exp(0.756`Ln(A)+3.765) 982 710 Phase VIII-Bldg.C 1000 gsf 64.000 =Exp(0.7561Ln(A)+3.765) 982 Subtotals 128.000 1,963 Totals 414.300 5,927 'Trip Generation,4th Edition was used for the Blackriver Corporate Park EIS traffic studies. For consistency,this same basis should be used throughout the permitting process for data consistency. "City staff prepared estimates using Trip Generation,5th Edition,and assuming'office park'as the proposed use. Office Park assumes an office complex including supporting retail and restaurant facilities which generate additional traffic from offsite. Blackriver Corporate Park will not include support retail facilities;therefore,'general office'is more appropriate. • Traffic and Parking Estimates For: BLACKRIVER CORPORATE PARK-Phases VII& VIII 12/11/91 LU LAND USE Variable Quantity Formula Vehicle Code Trips In Out Average Weekday Trips Per Trip Generation, 5th Edition*: Office Park** EIS Building Size Assumptions: 710 Total Phase VII 1000 gsf 286.300 =EXP(0.835'LN(A)+3.435) 3,493 1,747 1,747 710 Total Phase VIII 1000 gsf 183.582 =EXP(0.835'LN(A)+3.435) 2,410 1,205 1,205 Total-Both Phases 469.882 5,904 Proposed Building Sizes: 710 Total Phase VII 1000 gsf 286.300 =EXP(0.835'LN(A)+3.435) 3,493 1,747 1,747 710 Total Phase VIII 1000 gsf 128.000 =EXP(0.835'LN(A)+3.435) 1,784 892 892 Total-Both Phases 414.300 5,277 Calculated by Building: 710 Phase VII-Bldg.D 1000 gsf 91.550 =EXP(0.835'LN(A)+3.435) 1,348 674 674 710 Phase VII-Bldg.E 1000 gsf 78.350 =EXP(0.835'LN(A)+3.435) 1,184 592 592 710 Phase VII-Bldg.F 1000 gsf 116.400 EXP(0.835'LN(A)+3.435) 1,648 824 824 Subtotals 286.300 4,180 710 Phase VIII-Bldg.B 1000 gsf 64.000 =EXP(0.835'LN(A)+3.435) 1,000 710 Phase VIII-Bldg.C 1000 gsf 64.000 =EXP(0.835'LN(A)+3.435) _1,000 Subtotals 128.000 2,000 Totals 414.300 6,180 *Trip Generation,4th Edition was used for the Blackriver Corporate Park EIS traffic studies. For consistency,this same basis should be used throughout the permitting process for data consistency. "City staff prepared estimates using Trip Generation,5th Edition,and assuming"office park'as the proposed use. Office Park assumes an office complex including supporting retail and restaurant facilities which generate additional traffic from offsite. Blackriver Corporate Park will not include support retail facilities;therefore,'general office'is more appropriate. • Transportation and Traffic Engineering PLANNING • DESIGN The Transpo Group • October 2, 1991 TG: 90380.50 • Mr. Dean Erickson First City Washington, Inc. AT&T Gateway Tower, Suite 6000 700 - 5th Avenue Seattle, WA 98104 SUBJECT: BLACKRIVER CORPORATE PARK- PHASES VII AND VIII TRAFFIC MITIGATION FEES Dear Mr. Erickson: During the early phases of development of Blackriver corporate Park, First City Equities entered into agreements with the City of Renton to undertake the Grady Way Corridor Transportation Improvement Study. The study was carried out by The TRANSPO Group, and it was concluded with a report dated July 5, 1988. Since that time the city has adjusted the plan for street improvements and the mitigation fee assessment program, which resulted in an adopted fee program of$170 per daily trip generated. The mitigation fee program was to apply to Phase III and all subsequent phases of Blackriver Corporate Park development. While the study was in progress, First City Equities entered into an LID agreement with the city to share in the total cost of the Oakesdale LID #332. It was understood at that time that when the Grady Way study and assessment fee program was concluded, the fair-share contributions to the Oakesdale project plus all other road improvements in the transporta- tion benefit zone would be reevaluated and appropriate adjustments would be made. . The Oakesdale LID #332 total cost was$4,113,609, of which First City Equities paid $2,908.526 on behalf of Blackriver Corporate Park Phases III and future phases (Phases I and II were developed prior to any.transportation mitigation requirements under the Grady Way Transportation Benefit Zone (TBZ)); the other LID participants paid$1,205,083. According to the original intent of the Grady Way TBZ, 50 percent of the Oakesdale LID project cost was to be funded as part of the TBZ assessment program (now assessed at the rate of$170 per average weekday trip generated). The remaining 50 percent of the LID cost ($2,056,804) was to be funded directly by the property owners abutting the Oakesdale LID project as a direct local benefit. Since Blackriver Corporate Park abuts nearly all of one side of the Oakesdale LID project, its direct local share of the LID project cost would be $1,028,402 (one-half of the 50 percent local benefit share). LID credit due to the Blackriver Corporate Park applicant is $1,880,124 ($2,908,526 paid less$1,028,402 local share). Since adoption and application of the Grady Way TBZ, Blackriver Corporate Park has developed as follows: The TRANSPO Group,Inc. 14335 N.E.24th Street,Suite 201 Bellevue,Washington 98007 FAX:206/747-3688 206/641-3881 IP- , Mr. Dean Erickson The December 16, 1991 Page 2 Transpo Group Average * TBZ Asmt Phase Floor Area Weekday Trips @ $170/trip III 70,036 1,050 $178,540 IV-A 74,915 1,105 187,790 IV-B 74,915 1,105 187,790 V 50,546 822 139,800 VI 71,057 1,062 180,480 VII 286,300 3,020 513,400 VIII 128,000 1,650 280,500 Totals 811,351 ,9,815 $1,668,300 * Per 1TE Trip Generation,4th Edition. The cumulative TBZ assessments for Blackriver Corporate Park Phases III thru VIII is up to $1,668,300. Credit due the applicant for excess payment into the Oakesdale LID #332 is $1,880,124. Therefore, the Grady Way TBZ assessments for the current phases of Black- river Corporate Park are covered by credit due the applicant for excess participation in Oakesdale LID #332. We trust that this information will provide a basis for agreement with the City of Renton that traffic impact mitigation for Phases VII and VIII has in fact been reasonably covered by prior contributions to LID #332. Very truly yours, The TRANSPO Group, Inc. f , G�` -1214chAted._ James W. MacIsaac, P.E. President JWM/gap UWM\903805L3 IViiCHOFiLitEU MEMORANDUM OF AGREEMENT regarding BLACKRIVER CORPORATE PARK tracts A, B, and C Y � O� " CITY OF RENTON Planning/Building/Public Works Department Earl Clymer, Mayor Lynn Guttmann,Administrator December 2, 1991 To all recipients of the Final Environmental Impact Statement on the Black River Corporate Park Phases VII and VIII. Since the issuance of the Black River Corporate Park Phase VII and VIII Final EIS (March 27, 1991) and the environmental mitigation document (May 27, 1991), a number of conditions on the site have changed. In response to these changes, an addendum to the FE1S has been issued and the mitigation document is hereby withdrawn and a new doct rnent substituted. As referenced in WAC 197-11-600 and 625,the addendum, prepared prior to the City making a decision on the proposal, adds analyses or information about the proposal but does not substantially change the analysis of significant impacts and alternatives in the existing environmental document. A Memorandum of Agreement (MOA) between the City of Renton, the applicant, Sierra Club, Seattle Audubon Society, Rainier Audubon Society, Citizens for Renton'Midlands Preservation and the Sierra Club Cascade Chapter, Sammamish Group, is included with this letter. The MOA functions as an addendum to the FE1S and as a Mitigation Document for impacts from the proposal. A public hearing covering environmental impacts of the project and mitigation for those impacts will be held on December 17, 1991 at 9:00 a.m. If you have any questions on the addendum or the public hearing please call Mary Lynne Myer at 235-2719. Sincerely yours, CM),Witi . Donald K Erickson,AICP Secretary to the ERC • 200 Mill Avenue South - Renton, Washington 98055 November 20, 1991 MEMORANDUM OF AGREEMENT REGARDING BLACKRIVER CORPORATE PARK, TRACTS A, B AND C THIS AGREEMENT ("Agreement") is made and entered into this day of November, 1991 by and between the City of Renton, a Washington municipal corporation ("the City") , First City Washington, Inc. , a Washington corporation ("First City") , the 'i Seattle Audubon Society ("Seattle Audubon") , a Washington non- profit corporation, and Rainier Audubon Society ("Rainier Audubon") , an unincorporated association of citizens, the Citizens for Renton Wildlands Preservation, an unincorporated association of citizens ("Renton Citizens") , and the Sierra Club Cascade Chapter, Sammamish Group ("Sierra Club") , a Washington non-profit corporation (all collectively, "the Parties") . I. RECITALS 1. WHEREAS the City is an optional municipal code city of the State of Washington pursuant to RCW Chapter 35A, with the authority to purchase and hold property, and to regulate development under its land use, shorelines, building and other codes and the State Environmental Policy Act ("SEPA") , and to manage the parks, streets, and other public facilities within its jurisdiction; and 2 . WHEREAS First City is the owner of the property which is a subject of this Agreement, to wit, Tracts A, B, and C of the - - 1 - November 20, 1991 Blackriver Corporate Park, located in Renton, Washington ("Tracts A, B and C") , which Tracts A, B and C are respectively legally described on the attached Exhibits A, B and C, and by this reference incorporated herein; and 3. WHEREAS Tracts A, B, and C are the final remaining phases of the Blackriver Corporate Park, an approximately 115 acre office park (exclusive of dedicated areas described below) , developed by First City; and 4. WHEREAS under conditions of a 1979 rezone, Ordinance No. 3344, and subdivision approvals which contemplated development of the Blackriver Corporate Park, including Tracts A and B, but excluding Tract C, First City dedicated to the City 17.5 acres for the establishment of a regional drainage detention facility known as the "P-1 Pond" and for associated wildlife habitat, First City dedicated to the City approximately 10 acres for the construction of Oakesdale Avenue and other nearby streets, and First City contributed approximately 3 million dollars to an LID for the construction of Oakesdale Avenue. Further, pursuant to a 1982 rezone of Tract C, Ordinance No. 3694, which contemplated its development, First City's predecessor in interest dedicated to the City 20 acres of riparian forest for permanent open space and wildlife habitat; and 5. WHEREAS in 1988 First City applied to the City of Renton for a site plan approval for office buildings on Tract B, - 2 - November 20, 1991 which site plan application was modified numerous times at the request of the City, including the addition of office buildings proposed for Tract A. Final revised site plans for Tracts A and B, submitted in 1989, formed the basis for the City's final environmental review, and those final site plans are attached hereto as Exhibits D1 and D2 and by this reference incorporated herein (these site plans and the proposed development depicted therein referred to together hereinafter as "the Project") ; and 6. WHEREAS the Final Environmental Impact Statement ("FEIS") for the Project was published in March 1991 and two Environmental Mitigation Documents, one for Tract A and one for Tract B, were issued by the City's Environmental Review Committee ("the ERC") in May, 1991 (together, "ERC Document") , which ERC Document contained mitigation conditions applicable to the Project; and 7. WHEREAS First City, believing that the ERC Document contained overly restrictive and unnecessary environmental conditions not justified under the City's SEPA authority, appealed the ERC Document to the City of Renton Hearing Examiner ("Hearing Examiner") ; and 8. WHEREAS Seattle Audubon, Rainier Audubon, Renton Citizens and Sierra Club are groups that are interested in the protection of wildlife and wildlife habitat in the City of Renton and elsewhere, and had concerns regarding the impacts of First City's Project on wildlife and in particular a Great Blue heron - 3 - 11 November 20, 1991 rookery located in large cottonwood trees on an island in the P-1 Pond, shown on Figure 1-3 of the FEIS, which figure is attached hereto as Exhibit E, and incorporated by this reference herein ("Heron Rookery") ; and 9. WHEREAS Seattle Audubon, Rainier Audubon, Renton Citizens and Sierra Club (collectively, "the Citizen Appellants") believing that the ERC Document did not contain measures sufficient for the protection of wildlife and wildlife habitat, and in particular the Heron Rookery, and that the FEIS did not adequately analyze the Project's environmental impacts, appealed the ERC Document and the adequacy of the FEIS to the Hearing Examiner; and 10. WHEREAS in late April, 1991, after the FEIS had issued, one or more bald eagles through attacks on the Heron Rookery, disrupted the Great Blue herons' ("Herons") nesting in the. Heron ! ! Rookery for that nesting season, caused some of the Herons to relocate their nests into the riparian forest area, and ultimately, through repeated attacks, by June 1991, caused the Herons to leave these new nests with no known young produced at the Heron Rookery and the riparian forest for the 1991 season; and 11. WHEREAS this predation by the eagles and the unknown consequences for subsequent nesting seasons caused uncertainty y i for the Parties regarding the appropriateness and feasibility of - !I the ERC Document conditions which had been based on the - 4 - i November 20, 1991 assumption that the Herons would be continuing to nest in the particular location of the Heron Rookery; and 12. WHEREAS in July, 1991, while the appeals were pending, the City concluded an agreement with the Municipality of Metropolitan Seattle ("Metro") , which resulted in the City obtaining significant funds for the purchase of wetlands and wildlife habitat in accordance with the terms of that Agreement ("Metro Money") ; and 13. WHEREAS the City had already obtained some funding from the King County Open Space Bond fund and King County Conservation Futures program ("Open Space Funds") which funds were targeted for City acquisition of additional portions of the Blackriver riparian forest, which exist on portions of Tract C; and 14. WHEREAS the City consulted representatives of the State Department of Wildlife ("Wildlife") regarding how to best achieve protection of the Herons given the current uncertainty regarding the Herons' nesting locations, and how to protect the other wildlife in the P-1 Pond area, and Wildlife concurred that an effort to preserve the maximum amount of suitable habitat for the Herons and other wildlife was the preferable approach to an exclusive focus on particular nestingsites, and that a buffer between the proposed development and wildlife habitat, including the P-1 Pond, was also important; and 15. WHEREAS the Parties recognized that the changed circumstances including the uncertainty regarding the Heron - 5 - ICI November 20, 1991 Rookery's future viability and the demonstrated mobility of the Herons to other parts of the P-i Pond area due to predation, the ability for the City to purchase significant additional wildlife habitat due to the combination of the Metro Money and the Open Space Funds, subject to coming to agreeable terms of purchase with First City, Wildlife's approval of a habitat-based approach to conservation of wildlife resources with an effective buffer, all suggested a shift from the ERC Document's exclusive focus on protection of a particular nesting site towards a habitat-based approach to protection of wildlife with a buffer between the Project and the habitat, and gave the Parties a basis to negotiate a resolution to the disputes; and 16. WHEREAS First City and the Citizen Appellants each believes that it would prevail in its positions and assertions regarding the above-described appeals and the City believes it would prevail in defense of the FEIS and ERC Document, and each of the Parties believes it would prevail in any subsequent litigation regarding this matter, but at the same time has given due consideration to the changes in circumstances and new II information outlined above, the unavoidable delays and hazards of 1 these appeals and the expenses connected thereto, and has recognized the desirability of terminating the existing and future disputes on this subject without further expense and litigation; and it - 6 - II November 20, 1991 17. WHEREAS the City agrees to purchase a portion of Tract A that will encompass an area which soils testing and expert analysis has concluded contains soils with certain contamination exceeding standards under the State Model Toxics Control Act (MTCA) , which contamination was caused by the City's depositing of dredge spoils from the P-1 Pond expansion, and the City has agreed, based upon an indemnity agreement, to assume full responsibility as between the City and First City for this area and other areas where the City deposited dredge spoils and excavated soils, now and in the future; and 18. WHEREAS the Parties wish to protect wildlife habitat and wetlands in the vicinity of the subject site and believe that this can be accomplished by the City's purchase of a portion of Tract A, including the area described above, and the majority of Tract C, with an option for the City to purchase the remainder of Tract C, along with the imposition of revised environmental conditions on the Project; and 19. WHEREAS the City is willing to purchase and First City is willing to sell the desired areas of Tracts A and C upon terms that are described in more detail in this Agreement and the Purchase and Sale Agreements and Option Agreement which are attachments hereto; and 20. WHEREAS, as part of this Agreement, the City has also agreed to continue to pursue acquisition of portions of the - 7 - November 20, 1991 hillside (which is not in First City's ownership) north of Tract C; and 21. WHEREAS based upon the changed circumstances described above, and new information regarding the ineffectiveness and infeasibility of certain ERC Document conditions, including but not limited to the requirements for berms, archaeological study of the contaminated area, orientation of buildings away from the Metro plant and modification of site plans based on monitoring, the City has agreed to replace and supersede the ERC document with-:the environmental mitigation conditions agreed to by the Parties as set forth in this Agreement; and 22. WHEREAS the Citizen Appellants are extremely concerned that their Great Blue Heron experts have recommended that a setback of 660 feet to 1652 feet from the Heron Rookery shown on Exhibit E is appropriate, and while the Citizen Appellants have agreed to the location of improvements and the parking garage as shown on the Schematic Site Plans which are attached hereto as Exhibits F and G, which includes the location of a portion of the garage and improvements within 600 feet, they want to emphasize that no other private improvement shall be located in the 600- foot area except as provided in Section II.B and otherwise in this Agreement, and that no public improvements shall be located there unless and until the City has adopted a final Master Plan for that area; - 8 - November 20, 1991 23. WHEREAS, First City is extremely concerned that its Great Blue Heron experts have recommended that any required setback should be no greater than 350 feet from the Heron Rookery but, nevertheless, in order to settle these disputes, First City has agreed to substantially conform to the building locations shown in the Schematic Site Plans; and 24. WHEREAS the basis for the environmental conditions herein includes the City of Renton's Environmental Review Ordinance, Comprehensive Plan, Green River Valley Plan, Comprehensive Parks Plan, Surface and Storm Water Drainage Ordinance, Mining, Excavating and Grading Ordinance, Shoreline Master Program, Land Clearing and Tree Cutting Ordinance, Zoning Code and Site Plan Review Ordinance, City of Renton 1981 Wetlands Study and other applicable plans, studies and ordinances; and 25. WHEREAS First City and the Citizen Appellants are willing to drop their appeals of the ERC Document and the FEIS based on the terms and conditions hereof, and the City and Citizen Appellants agree to support and not to oppose other governmental approvals required for construction of the project such as the site plan, shorelines permit, and building permits for the Project, as further set forth in this Agreement. NOW THEREFORE, IN CONSIDERATION of the mutual promises, covenants and agreements contained herein and other good and valuable consideration the legal sufficiency of which is hereby acknowledged by the Parties, the Citizen Appellants, on behalf of - 9 - November 20, 1991 themselves, their officers, directors and current members, and First City and the City hereby agree as follows with the intent that each be legally bound: I I II. ENVIRONMENTAL MITIGATION CONDITIONS A. Mitigation Conditions Controlling. 1. Mitigation Conditions Replace ERC Document and Are Final. The City agrees that the environmental mitigation conditions listed in this Section II of this Agreement ("Mitigation Conditions") will replace and supersede the ERC document and will constitute the environmental mitigation conditions for the Project. The City and First City agree that the Mitigation Conditions will fully mitigate all environmental impacts from the Project, and that no further mitigation is necessary or appropriate with regard to the subject matter of this Agreement. The Citizen Appellants believe that the I _ Mitigation Conditions will likely mitigate all of the Project's environmental impacts and thus agree to their imposition as the Mitigation Conditions for the Project. The City Departments agree to recommend imposition of these Mitigation Conditions or impose these Mitigation Conditions. The City also agrees to impose no other mitigation conditions with respect to the subject matters addressed in the Mitigation Conditions, on all approvals required for the construction and operation of the Project, except as provided in Section II.A.2 below. i - 10 - November 20, 1991 2. Relationship of Mitigation Conditions to Required Permits and Approvals. a. Other Permits and Approvals Required. The Parties recognize that in addition to the environmental approval embodied by the Mitigation Conditions, First City is required to obtain other permits and approvals, such as a site plan approval, shoreline permit and construction permits. In that regard, this Agreement recites in several ensuing Sections that more specific conditions will be imposed at the time of site plan approval and shoreline permit, with regard to the details of the Revised Project, such as requirements for the surface and stormwater drainage system, wetlands mitigation plan, transportation management plan, construction haul routes plan, and shoreline public access, which conditions are intended to be consistent with this Agreement and the Exhibits hereto which specifically address these matters. b. Additional Conditions to Be Consistent With Mitigation Conditions. The Parties desire to have as much certainty as possible regarding the conditions for the Revised Project and hereby state their intent that the conditions of the permits and approvals for the Revised Project will not conflict with, materially enlarge or modify the Mitigation Conditions herein. To that end, the City agrees that it will only impose additional conditions to the Mitigation Conditions on the Revised Project which do not conflict with, enlarge or modify the - 11 - 'I I November 20, 1991 Mitigation Conditions unless such conflict, enlargement or modification is explicitly mandated by a City ordinance in existence on the date of this Agreement other than the Environmental Review Ordinance, or as otherwise provided in this Agreement. The Parties also recognize that while they wish to bind themselves as much as possible, this Agreement cannot legally bind a future City Council and that it cannot bind quasi- judicial decisionmakers regarding permits and approvals for the Revised Project. If a condition which conflicts with, enlarges or modifies the Mitigation Conditions is imposed on a site plan approval or shoreline permit for the Revised Project by the City staff, quasi-judicial decisionmakers or the courts, then First City may elect to terminate this Agreement, as further provided in Section VI.B below. 3 . Project to Substantially Comply With Mitigation Conditions. First City agrees that its applications for site plan approval, shoreline permit or other approvals required for the development of Tracts A and B pursuant to this Agreement, will be for a project that is revised to substantially conform to all of the Mitigation Conditions of this Agreement ("the Revised Project") ; provided that substantially conform means that First City may only make "minor adjustments" to its Revised Project, "minor adjustment" defined herein as any change that is less than a "major adjustment" as defined below ("Minor Adjustment") , which Minor Adjustments shall also be within the terms or the spirit - 12 - November 20, 1991 and intent of this Agreement, without written consent of the Parties. 4. Modifications to Revised Project Require Agreement. If First City desires to change an explicit term of this Agreement or make a major adjustment to its Revised Project, which "major adjustment" is defined herein to be "a substantial change in the Schematic Site Plan design, or increase in the total building area over the square footage shown for Tracts A and B in Exhibits D1 and D2" (any such substantial change or major adjustment, hereinafter a "Modification") , First City must obtain written consent of the Parties to such Modification. The Parties agree that they have an obligation to entertain in good faith proposals from First City for a Modification and to promptly respond in writing to any reasonable proposal for a Modification within fifteen days from the date of receipt thereof which proposal meets the spirit and intent of this Agreement. If the Modification agreed to by the Parties requires an amended site plan approval or other new approvals, the Parties' obligations of support and non-opposition specified in Section III below shall apply to the Modification the same as to the Revised Project. If the Parties do not agree to the Modification, First City, may, at its option, either pursue the Modification under new approvals, and the requirements of this Agreement including the Mitigation Conditions and the non- opposition requirements will not apply, or may enter into binding - 13 - November 20, 1991 Arbitration with the other Parties as follows. If First City so elects, the Parties may seek binding arbitration regarding the issue of whether the Modification is within the spirit and intent of this Agreement and hence, should be allowed. The arbitration shall be conducted by three arbitrators (the "Arbitrators") , to be chosen as follows: First City shall choose one Arbitrator, the Citizen Appellants shall choose the second Arbitrator, and the third Arbitrator shall be chosen by the first two Arbitrators. The City may elect to waive its procedures for major adjustment of a site plan and agree to be bound by the Arbitrator's decision. The cost of arbitration shall be shared equally by the Parties taking part in the arbitration. B. Conditions Reciardincr Site Layout, Buffer, Landscaping, Fencing and Building Heights 1. Site layout. The Revised Project's site layout shall be in accordance with the schematic site plans ("Schematic Site Plans") for Tracts A and B, which are attached hereto as Exhibits F and G respectively, and which are incorporated by this reference herein. The locations and footprints of the buildings, the parking garage, the locations of surface parking, fire lanes, landscaping and fencing shall substantially conform to the Schematic Site Plans, as further detailed below. As shown on the Schematic Site Plans, the number of buildings on Tract A shall be limited to two and the number of buildings on Tract B shall be limited to three and a parking garage, unless and until a I - 14 - November 20, 1991 Modification is approved pursuant to Section II.A.4. First City shall not locate any buildings in the area on Tract B shaded in black on the Schematic Site Plans (the "Natural Area") , but may put tree stump and natural vegetative materials ("Dead and Down Material") , and wetponds and biofiltration swales in this Natural Area. Any required maintenance within the Natural Area will be done in a manner sensitive to the wildlife in the area. The Parties recognize that First City may be required to provide to the City an easement for a public access to the P-1 Pond as a requirement of shoreline permit approval, the location of which Public Access will be decided as part of a City Open Space/Wildlife Habitat Master Planning Process, which process shall allow for public input, and any improvements to the Public Access will be provided by and maintained by the City; provided, however, that such Public Access will not alter the Schematic Site Plans except in a very minor way not inconsistent with the spirit and intent of this Agreement which is that there be no public access in the Natural Area unless and until the City has adopted a final Master Plan for that area. First City shall install a gate at the most easterly end of the City's maintenance road adjacent to Tract A where it meets Oakesdale Avenue, and the City shall install a gate at the most westerly end of the City's maintenance road near the western boundary of the portion of Tract A purchased by the City, which gate locations are shown on the Schematic Site Plan for Tract A. - 15 November 20, 1991 2. Buffer. On Tract B, and the portion of Tract A remaining in First City ownership after the City's purchase detailed in Section V below, there will be a landscaped and natural vegetation buffer, located in the area within 100 feet from the ordinary high water mark of the P-1 Pond/Springbrook Creek, which area is shown as a cross-hatched area on the Schematic Site Plans (this area known hereinafter as the "Buffer Area") . There shall be no development or activity in this Buffer Area except for the landscaping, fencing, irrigation and placement of Dead and Down Material, and any Public Access as described above (all collectively "Permitted Buffer Improvements") , and activities necessary to install, maintain and repair the Permitted Buffer Improvements. Approximately 60-70 feet of this buffer area is in City ownership, so First City will be providing approximately 30-40 feet of buffer area on its property, as shown on the Schematic Site Plans. 3. Landscaping. First City will landscape approximately 30 feet of the Buffer Area within its ownership on Tracts A and B (this landscaped area on First City's property known hereinafter as the "Landscape Area") , which Landscape Area is shown shaded in grey on the Schematic Site Plans. First City will also landscape a 30-foot strip extension of this buffer on Tract B between the Buffer Area and the parking garage, exclusive of the fire lane area ("Landscape Extension") , which Landscape Extension is also shown shaded in grey on the Schematic Site - 16 - I November 20, 1991 Plan. The types and locations of plant materials to be provided in both the Landscape Area and the Landscape Extension shall be in substantial conformance with the landscape areas plan which is attached as Exhibit H and by this reference incorporated herein ("Landscape Areas Plan") . First City may relocate certain existing trees on Tracts A and B to comply with the Landscape Areas Plan. As demonstrated by the Landscape Areas Plan, no berms are required. The plant materials in the Landscape Areas Plan shall be irrigated and those on the development side of the fence will be maintained by First City. First City will comply with local, state and federal regulations regarding the use of chemicals in landscape maintenance, and will accommodate all suggestions of the Parties that First City determines are economically and technically feasible regarding which herbicides and pesticides to use. First City will plant a hedge row comprised of one row of evergreen shrubs such as laurel, to be located on City property at the boundary between First City's ownership on Tract A and the portion of Tract A purchased by the City under Section V below, as shown on the Schematic Site Plan. First City shall reserve an easement on the portion of Tract A sold to the City for planting and maintenance of the hedge row. All planting materials in the Landscape Areas and the hedge row shall be subject to replacement in accordance with the City's standard three year landscape bond. - 17 - November 20, 1991 4. Modification of Landscape. Yard and Setback Requirements. The portion of Tract A to be sold to the City shall be considered a part of Tract A for the purpose of the City's application of zoning code and landscaping requirements. The City recognizes that unique landscaping and setback requirements have been imposed as q p part of this Agreement to deal I' with the unique sensitivities of this site, which requirements do not meet the strict requirements of the City's zoning and landscape ordinances, but which meet the spirit and intent of those ordinances. The City therefore agrees to waive its standard code landscaping, yard and setback requirements for the Revised Project to the extent that these requirements exceed or are inconsistent with the landscaping and setback requirements !' set forth in this Agreement, or inconsistent with the Schematic Site Plans. 5. Fence. First City shall install a six-foot tall chain-link fence with earth tone-colored slats in the areas described as follows. On Tract A, the fence shall run from the western property boundary of the portion of Tract A First City retains after the City's acquisition and along the P-1 Pond to the northeast corner of Building B. On Tract B, the fence shall i - be located in the Landscape Extension, described in Section II.B. 3 above. These fence locations are shown on the Schematic Site Plans with a dashed line and the fence locations shown on the Schematic Site Plans shall control over the text of this - 18 - �' November 20, 1991 Agreement. The exact location of the fence relative to the plantings .within a portion of the Landscape Area on Tract A and the Landscape Extension on Tract B is shown in more detail on the Landscape Areas Plan. 6. Building Height Limitations. First City will limit the height of the buildings on Tract B to five stories from finished grade, and will limit the height of the parking garage on Tract B to four stories from finished grade. First City will limit the height of the buildings on Tract A to four stories from finished grade. C. Conditions Regarding Construction Season Limits,Monitoring 1. Construction Season Limitations. First City shall observe seasonal limitations on certain construction activities in certain locations specified below for the period beginning January 15 and ending on June 15 ("Construction Season Limitations") of any given year to protect the nesting of Herons at the Heron Rookery shown on Exhibit E, subject to the follow conditions: a) Limitations Applicable Only to Major Outdoor Construction. The Construction Season Limitations shall apply only to "major outdoor construction" defined herein to mean "preloading, grading, foundations, structural steel, installation of dryvit panels, roofing and hardscape" ("Major Outdoor Construction") as distinguished from minor construction and - 19 - November 20, 1991 interior work defined herein to mean "rough-in mechanical and electrical, glazing installation, interior shell finish, and tenant improvements" ("Minor Construction and Interior Work") . Landscaping, which shall not include grading or the use of heavy equipment, will not constitute Major Outdoor Construction and may be installed at any time, and is not subject to the Construction Season Limitations. b) Limitations Applicable Only in Construction Limit Zone. The Construction Season Limitations shall only apply to Major Outdoor Construction conducted within a 700-foot radius of the Heron Rookery shown on E,Exhibit measured from the nearest heron tree in the Heron Rookery, and the location of this 700-foot radius is shown superimposed on the Schematic Site Plan on the attached Exhibit I ("Construction Limit Zone") . This means that the Construction Limit Zone encompasses only a portion of the sitework on Tract A and a portion of the sitework and a portion of the parking garage on Tract B, as shown on Exhibit I. c) Monitoring If First City Wants to Begin I ' Construction Early. If First City believes that the Herons have not returned to nest at the Heron Rookery by March 15 of any year, and wishes to begin construction prior to June 15 of that year, First City must monitor the Heron Rookery to produce corroborating evidence of the Herons' absence. The monitoring must be conducted by a person with educational credentials and expertise in wildlife biology, and if possible, Heron behavior - 20 - I November 20, 1991 (such person to be known as a "Heron Expert") from a list of persons that shall be agreed upon by the Parties within 90 days of execution of this Agreement. The Heron Expert must monitor the Heron Rookery daily for at least one week prior to and again on March 15 to determine whether any pairs of Herons at the Heron Rookery are actively engaged in continuous nest building, nesting, hatching or fledging activities ("Heron Nesting Activities") . If the Heron Expert determines that there are no Heron pairs engaged in Heron Nesting Activities for one week prior to and on March 15, then Major Outdoor Construction can occur within the Construction Limitation Zone after the completion of the one week monitoring, but no sooner than March 16 of that year. d) Good Faith Efforts to Give Additional Limitation Period. For any year in which the Construction Season Limitations are required, First City shall make a good faith effort to structure its construction schedule as is economically and technically feasible for the portion of the parking garage located within the Construction Limitation Zone such that First City minimizes Major Outdoor Construction in this area between the period from January 1 to January 15 and the period from June 15 to July 1 for that year ("Additional Limitation Period") . First City agrees to share its construction schedule for the parking garage with the representatives of the Citizen Appellants designated to receive notices in Section VI below, or their - 21 - November 20, 1991 successors, and in good faith to accommodate all suggestions which First City determines are economically and technically feasible regarding minimizing construction impacts on Heron Nesting Activities during the Additional Limitation Period. e) Monitoring If Citizen Appellants Desire Additional Protection Outside of Construction Limit Zone. If the Citizen Appellants or the City believes that First City's Major Outdoor Construction activities outside of the Construction Limit Zone during the Construction Limitation Season are having adverse impacts on Heron Nesting Activities, they may engage a Heron Expert at their expense to conduct monitoring to determine whether the Herons are experiencing adverse impacts and whether this disruption is causally related to First City's Major Outdoor Construction activities. The Heron Expert shall present any evidence of adverse impacts and the causal relationship to First City, which evidence can be confirmed or contested at First City's option by a second Heron Expert, chosen by First City. If the Citizen Appellants' or the City's Heron Expert and First City's Heron Expert agree that monitoring shows adverse impacts 1 to the Herons that are causally related to First City's Major Outdoor Construction activities, these Experts shall make a joint recommendation for institution of construction protective measures to reduce Major Outdoor Construction Impacts, including but not limited to screening of construction and additional noise buffers ("Construction Protective Measures") . If the two Heron - 22 - I November 20, 1991 Experts cannot agree, the issue will be submitted to a third Heron Expert chosen by the first two Heron Experts, the cost of such Heron Expert to be shared equally by First City and the Party who engaged the first Heron Expert, who will decide whether or not adverse impacts exist, whether there is a causal relationship and if so, will recommend Construction Protective Measures. If it is determined by the Heron Expert(s) as set forth above that adverse impacts on the Herons are being caused by First City's Major Outdoor Construction activities, First City will in good faith institute those Construction Protective Measures that First City determines are economically and technically feasible to accommodate the joint recommendation of the two Heron Experts, or if there is disagreement, the recommendation of the third Heron Expert. The Parties understand that time is of the essence and will make best efforts to expedite the actions contemplated by this section. 2 . Other Construction Limitations. First City shall use only auger-cast-in-place piling and shall not engage in any pile-driving in construction of any of the structures shown on the Schematic Site Plan. First City will comply with the City's noise ordinance and other construction noise limitation conditions routinely applied by the City to all projects, which conditions shall be imposed as a part of the site plan approval. - 23 - November 20, 1991 D. Conditions Regarding Extended Site Plan Approval. � I Phasing. Site Plan Approval Submittal. Vesting 1. Extended Site Plan Approval. The City shall recommend that the Hearing Examiner grant an eight year extended site plan approval for the Revised Project, with one potential two-year extension (for a total of ten years) , and the City shall recommend no conditions and take no actions inconsistent with this extended site plan approval. 2. Phasing of Extended Site Plan. In accordance with the City's site plan ordinance, the eight year site plan approva]. for the Revised Project shall contain a proposed phasing as follows, with the understanding that the number of buildings listed for each phase can be constructed on either Tract A or B and that all time periods are to be measured from the date of final site plan approval: Phase I -- at least one building shall H be commenced in the first three years; Phase II -- at least three buildings shall have commenced in the first six years; Phase III -- at least five buildings shall have commenced in the eight years; provided, however, that if any of the Phases cannot be commenced in the time periods set forth above, the Hearing Examiner shall, within thirty days of First City's written request and based upon a showing of good cause for delay, including circumstances such as lack of available financing, tenants or other market conditions, ("Good Cause") grant an extension of the time for commencement of that phase as - 24 - I November 20, 1991 necessary, but not beyond the eight year period; provided, however, that one two-year extension 'of the eight year extended site plan approval shall be granted within thirty days of First City's written request therefor if, in the discretion of the Hearing Examiner, substantial progress has been shown and there is Good Cause for such extension. The parking garage may be constructed at any time within the extended site plan period. The Hearing Examiner's determination with regard to extension of the phases or extension of the site plan period as set forth above shall be appealable to the City Council within 15 days of the Hearing Examiner's decision regarding the requested extension. 3. No Additional Phasing Requirements. Other than the phasing requirements of the extended site plan approval in Section II.D.2, the Construction Season Limitations in Section II.0 and the requirement to substantially comply with the Schematic Site Plans (Revised Project) as specified in Section A. 3, there shall be no other restrictions regarding when and where the buildings and parking garage on Tracts A and B are constructed. 4. Requirements for Site Plan Application. The application for site plan approval shall consist only of a site plan as specified by the City's site plan ordinance, schematic building elevations, landscape plan, schematic grading, drainage and utilities plan, and schematic wetlands mitigation plan. - 25 - November 20, 1991 Detailed planting plans, architectural and engineering plans, construction haul route plan and other similar plans of this specificity and detail will not be required until the time of construction permit application. A Transportation Management Plan as further set forth below must be submitted at the time of building permit application for each building, and approved by the City prior to issuance of occupancy permits for each building. 5. Vesting. To the extent permitted by applicable law,: the City agrees that the Revised Project shall be vested to those zoning, shorelines, wetlands, parking, site plan and other land use ordinances in effect at the date of this Agreement, and that the Revised Project will not be subject to the requirements ; I of any new ordinances not in effect on the date of this Agreement. The City will use its best efforts to ensure the vesting of the Revised Project, including but not limited to, broadly interpreting its vesting protection for extended site plan approvals, and ensuring that "vesting grace" is provided for the Revised Project in new ordinances which address wetlands, wildlife habitat, parking or other subjects which could impose requirements additional to or conflicting with the Mitigation Measures in this Agreement. The City recognizes that the shoreline permits for this project may expire prior to the commencement of construction of all of the buildings anticipated for the Revised Project under the extended site plan approval, - 26 - i November 20, 1991 and the City agrees that these shoreline permits for the Revised Project shall be re-issued as necessary for the life of the extended site plan approval, despite any changes in the shoreline program, in accordance with the terms of this Agreement. This vesting does not apply if the approved site plan expires nor is 'it binding on the courts or the Shorelines Hearings Board. E. Conditions Regarding Drainage and Water Quantity. 1. Drainage to be Accommodated by P-1 Pond. The City recognizes, based upon prior agreements with First City and upon drainage calculations which show sufficient capacity, that the P- 1 Pond is sufficient to handle the quantity of surface and storm water run-off anticipated from the Revised Project. The City therefore agrees that there will be no requirements placed on the Revised Project inconsistent with the agreement that run-off from the Revised Project will enter the P-1 Pond without detention. 2. Compliance with City Stormwater Ordinance. First City shall design and operate the surface and storm water run-off system for the Revised Project in compliance with the City's Surface and Stormwater Drainage ordinance in effect at the date of this Agreement, including the use of wet ponds and biofiltration swales, and any required downstream analyses, as provided in that ordinance. Review and approval of First City's schematic drainage plan will occur at site plan approval, but this approval shall not contain any conditions which impose - 27 II November 20, 1991 requirements which exceed or are inconsistent with this ! - Agreement. 3. P-1 Pond Water Quality Management Plan. If the City implements a water quality management plan ("P-1 Plan") to reduce water. quality impacts on the P-i Pond, to be paid for by ! all landowners who contribute run-off to the P-1 Pond, First City shall contribute its proportionate share of the funding for the P-1 Plan so long as all other owners contribute their proportionate share of the funding; provided, however that First City retains the ability to challenge the City's allocation of costs to First City under the P-1 Plan. The City may provide for reasonable classifications, rate reductions and exemptions without violating this section, as long as these are rationally based and not fundamentally unfair. 4. Wetlands Mitigation. First City shall mitigate for the proposed filling of approximately 0.14 acres of wetlands with low functional values on Tracts A and B by creating an additional new or enhanced wetland area adjacent to the old Black River channel on Tract B. A schematic wetlands mitigation plan, containing the elements set forth in Exhibit M attached hereto and by this reference incorporated herein shall be submitted to the City as part of the site plan approval. Site plan approval of the wetland mitigation plan shall not contain any conditions which impose requirements which exceed or are inconsistent with this Agreement. ii - 28 - November 20, 1991 5. Wetlands Buffer. First City shall establish a buffer around the old Black River channel wetland on Tract B averaging 50 feet in width with no portion of the buffer to be less than 25 feet in width. F. Conditions Regarding Traffic. Parking Garage and Parkinct Construction 1. Traffic Mitigation Fee Credit. There shall be no traffic mitigation fees required of First City for the Revised Project. 2 . Transportation Management Plan. First City will be required to submit a Transportation Management Plan ("TMP") for the Revised Project at the time of building permit applications which TMP shall contain the elements and goals listed in Exhibit J, attached hereto and incorporated herein by this reference. The TMP must be approved by the City's Development Services Division in accordance with the elements and goals set forth in Exhibit J prior to the issuance of occupancy permits for any of the buildings in the Revised Project. The City may not impose TMP requirements for the Revised Project which exceed or are inconsistent with those set forth in Exhibit J, and the City agrees to expeditiously review the TMP. 3 . Construction Haul Routes Plan. Prior to commencing construction, First City shall have a haul routes plan for controlling construction transportation impacts approved by the City. First City will cooperate with reasonable City efforts - 29 - I November 20, 1991 to coordinate construction haul routes with other projects under construction at the same time in the immediate vicinity. First City agrees to ensure that truck and wheel washing be accomplished on site before each haul trip. First City also agrees that it will limit hauling hours for large construction vehicles in accordance with applicable City standards. 4. Parking Garage. The parking garage shall be constructed in compliance with applicable City standards. The north wall of the lower three levels of the parking garage shall be a solid blank wall. The top level of the garage shall be open; however, the north wall of the garage will be extended to a 1 height of 48 inches from floor level. A reasonable number of potted plantings shall also be placed on the top level of the parking garage to provide visual relief and reduce some incidental headlight glare, provided that parking requirements can still be met. The City shall permit First City to locate temporary parking for Tract B on Tract A during the construction of the surface parking and the construction of the parking garage. 5. Construction Area Demarcation. During construction of the buildings, and parking garage on Tract B, ' !First City will be required to demarcate in a highly visible manner the boundaries of construction. li li -- - 30 - ji November 20, 1991 G. Miscellaneous Architectural Issues, Light and Glare, Building Colors, Archaeological Issues, Cumulative Impacts, Contamination Issue 1. Architectural Issues. The buildings in the Revised Project will be located substantially as indicated on the Schematic Site Plans. The colors of the building skins shall be subdued colors, including colors such as browns, tans, off- whites, greens, grays, and blues. The windows shall be glass with a non-reflective coating. No window hoods will be required. There will be no other design requirements regarding the buildings. 2 . Site Lighting. First City shall use down light standards in its parking areas and other lighted site areas. 3 . Archaeological Survey. The archaeological survey already conducted for the site will satisfy requirements to quantify the Revised Project's archaeological impacts and no further archaeological survey is required for the Revised Project. The portion of Tract A which has not been subject to an archaeological survey, is substantially the portion being sold to the City pursuant to Section V below, and thus, the need for any additional archeological survey is eliminated. 4 . Contaminated Area. There shall be no requirements such as use or construction limitations or signage requirements imposed by the City to address the issue of contamination under MTCA or other laws, as the contaminated portion of Tract A is being sold to the City pursuant to Section V below. - 31 - November 20, 1991 III. AGREEMENT TO SUPPORT REVISED PROJECT, NON-OPPOSITION A. First City Withdrawal of Appeal. First City agrees to withdraw its appeal of the ERC Document upon execution of this Agreement, as further provided in Section VI.F below. B. City Obligations 1. Mitigation Conditions Final Exercise of City SEPA Authority. The City agrees that the Mitigation Conditions replace and supersede the ERC Document and that the Mitigation Conditions are the final exercise of its SEPA authority for the Revised Project. The City will not assert continuing SEPA authority to request or impose SEPA conditions additional to or inconsistent with the Mitigation Conditions at the site plan approval, the shoreline permit, the building permit, or in any subsequent permitting process for the Revised Project, nor will the City bring any SEPA challenge regarding the Revised Project; provided, however, that this Agreement cannot bind quasi-judicial decisionmakers and that new SEPA authority may be asserted by the City if First City makes a Modification to its Revised Project as defined in Section II.A.4 above, if that Modification requires new SEPA review. 2. City Support of Approvals for Revised Project. II � The City Administration agrees that it will support the Revised Project. The City Administration agrees that City staff will recommend approval of a site plan application for the Revised - 32 - November 20, 1991 Project to the Hearing Examiner and if appealed, will support the N` site plan approval before the City Council. City staff will also approve a shoreline permit for the Revised Project, in accordance with this Agreement and the requirements of its Shoreline Master Program, and support this shoreline permit in any appeals to the Hearing Examiner or Shorelines Hearings Board. The City further agrees that it will not recommend imposition of additional requirements with regard to the subject matter of this Agreement, which requirements exceed or are inconsistent with the Mitigation Conditions, on any City permits or approvals required for the construction or operation of the Revised Project, except as provided in Section II.A.2 above. 3. City Support of Approvals with Third Parties. The City agrees not to encourage or assist other individuals or entities to oppose, appeal or otherwise delay the site plan approval, shoreline permit, building permit or other permits required for construction or operation of the Revised Project. 4. Expeditious Processing of Approvals. The City agrees to use its best efforts to expeditiously process the site plan approval, shoreline permit, building permit and other permits and approvals required for the construction or operation of the Revised Project. More specifically, when First City submits a complete site plan application package, the City will use all practicable means to have a site plan approval recommendation ready within six weeks of that submittal. The - 33 - November 20, 1991 City also agrees to use best efforts to expeditiously process building permit applications in order that First City can meet the Construction Season Limitations in Section II.0 above, if applicable. , C. Citizen Appellant Obligations 1. Withdrawal of Appeals. The Citizen Appellants agree to withdraw their appeal of the ERC Document, and to withdraw their appeal of the FEIS, upon execution of this Agreement as further provided in Section VI.F below. 2. Non-Opposition to Governmental Approvals; Agreement to Forego Further Appeals. The Citizen Appellants agree on behalf of their associations, their officers, directors, current members in their capacity as members, and successors that they will bring no further challenges to the Revised Project based on SEPA, and that they will not oppose First City's application for site plan approvals, shoreline permits, building permits, and any other existing or future governmental approvals including, but not limited to, permits or licenses or any other governmental actions (all collectively, "Governmental Approvals") which First City has sought or in the future may seek for I; construction or operation of the Revised Project. The Citizen Appellants' agreement not to oppose Governmental Approvals includes non-opposition before the approval-granting authority and non-opposition through administrative appeal or litigation. The sole exception to this non-opposition requirement is that the - 34 - November 20, 1991 Citizen Appellants retain the right, should the Hearing Examiner deny the final two year extension of the site plan approval based on a finding of no Good Cause, to support the Hearing Examiner's denial. The Citizen Appellants also agree on behalf of their associations, their officers, directors, current members in their capacity as members, and successors, not to take any other actions which might have the effect of stopping or delaying construction of the Revised Project or increasing the cost of the Revised Project. The Citizen Appellants do not waive their right to insist that the Revised Project be constructed in conformance with the Mitigation Conditions and with consistent conditions attached to other Governmental Approvals, subject to Section II.A.4 above on Modifications to the Revised Project. The Citizen Appellants agree that neither they, nor their officers, directors, current members in their capacity as members, or successors will in any way assist, aid or cooperate with other persons or entities who oppose the Revised Project or who contemplate opposing the Revised Project in any of the manners described in this paragraph. 3. Best Efforts to Avoid Third Party Opposition. The Citizen Appellants, their officers, directors, current members in their capacity as members, associate members, and successors agree to use their best efforts to support the Revised Project and to persuade any individuals or groups not bound by this Agreement to support the site plan approval, shoreline permit, - 35 - November 20, 1991 building permits and other Governmental Approvals for the Revised Project and to use best efforts to dissuade any such individuals - II or groups from bringing administrative appeals or litigation to challenge such Governmental Approvals for the Revised Project. 4. Non-Opposition, Support Applicable to Agreed Modifications of Project. If the Parties approve a Modification as set forth in Section II.A.4 above, the non-opposition and support obligations set forth in this paragraph shall also apply to the Modification of the Revised Project. IV. CITY PURCHASE OF A PORTION OF TRACT A ;The City agrees to purchase and First City agrees to sell a portion of Tract A of the Blackriver Corporate Park ("the City Tract A Property") under the terms and conditions set forth in the Real Estate Purchase and Sale Agreement for a Portion of Tract A and its attachments ("the Tract A Purchase Agreement") which is attached hereto as Exhibit N and by this reference incorporated herein. The City Tract A property is depicted on Attachment A and is legally described on Attachment B to the Tract A Purchase Agreement. Closing of the City's purchase of City Tract A shall be contingent upon First City obtaining an I i acceptable final site plan approval and shoreline permit for the Revised Project which contingency may be waived by First City, all as further provided in Section VI.B below. li - 36 November 20, 1991 V. CITY PURCHASE OF PORTIONS OF TRACT C A. Purchase of the City Tract C Property. The City agrees to purchase, and First City agrees to sell to the City, Lots 5, 7, 8, 9, 10 and a portion of Lot 6 of Tract C of the Blackriver Corporate Park ("the City Tract C Property") under the terms and conditions set forth in the Real Estate Purchase and Sale Agreement for a Portion of Tract C, including its attachments ("the Tract C Purchase Agreement") , which is attached hereto as Exhibit 0 and by this reference incorporated herein. The City Tract C Property is depicted on Attachment A and legally described on Attachment C of the Tract C Purchase Agreement. Closing of the City's purchase of the City Tract C Property is contingent upon First City's obtaining an acceptable final site plan approval and shoreline permit for the Revised Project, which contingency may be waived by First City, all as further provided in Section VI.B below. B. Purchase of Tract C Option Property. First City agrees to grant the City a two year option to purchase the portion of Tract C remaining after the purchase of the City Tract C Property, to wit, Lot 3, Lot 4 and the remainder of Lot 6 of Tract C ("the Tract C Option Property") under the terms and conditions set forth in the Option Agreement including its attachments, which are attached hereto as Exhibit P and by this reference incorporated herein. The Option Agreement is - 37 - November 20, 1991 contingent upon the closing of the City's purchase of the City Tract C Property, as provided therein. VI. GENERAL PROVISIONS A. Entire Agreement Included; Modification This Agreement and the attached exhibits contain the entire agreement between the Parties with respect to the subject matter hereof and shall not be modified or amended in any way except in writing signed by the duly authorized representatives of the Parties or their successors in interest. Modifications of the portions of this Agreement which address the Revised Project are dealt with more specifically in Section II.A.4 above. B. Contingent Nature of this Agreement In the event that First City is unable to obtain an acceptable site plan approval or shoreline permit which First City deems to be consistent with this Agreement for construction of the Revised Project, or if there are any appeals or litigation of First City's site plan approval or shoreline permit, then at the option of First City, this Agreement shall terminate, the Purchase and Sale Agreements and Option Agreements shall be null and void, and the Parties shall be returned to their original positions prior to the Agreement. The closing of the Purchase and Sale Agreements and Option Agreement attached hereto is contingent on First City's obtaining an acceptable final site plan approval and final shoreline permit for the Revised Project, Ij I I - 38 - �i November 20, 1991 which contingency may be waived by First City at its sole option. C. pispute Resolution The Parties to this Agreement agree to in good faith attempt to resolve among themselves disputes which may arise under this Agreement prior to resorting to litigation. D. Enforcement The Parties agree that the remedies at law for any breach of the agreements contained herein would be inadequate and in the event of a breach of this Agreement, the aggrieved Party shall be entitled to equitable relief including injunctive relief. While First City may also seek damages for any such breach against the City, First City and the Citizen Appellants agree that their only remedy against each other is injunctive relief; provided, however, that this does not waive First City's or the Citizens Appellants' right to seek and enforce an injunction bond. E. Agreement to Bind Successors This Agreement is intended to be and shall be binding upon and inure to the benefit of the respective successors and assigns of the Parties and upon any and all purchasers of the real property which is a subject of this Agreement. The benefits and burdens upon the Parties created by this Agreement shall be and create a covenant upon and shall run with and be appurtenant to the real property which is a subject of this Agreement. - 39 - November 20, 1991 F. Stipulated Dismissal of Hearing Examiner Appeals Upon execution of this Agreement, the Parties agree to execute and file with the Hearing Examiner the stipulated dismissal of appeals ("Stipulated Dismissal") in the form attached hereto as Exhibit K and by this reference incorporated herein. The Parties agree that they shall sign, deliver and file the Stipulated Dismissal the same working day as the execution of this Agreement or within one working day thereafter. G. Joint Press Release The Parties agree that upon execution of this Agreement, they will jointly issue a press release in substantially the form attached hereto as Exhibit L and incorporated herein by this reference. The Parties agree not to comment to the press in a manner that would call this Agreement into question and agree that for as long as any provision of this Agreement remains in force that each shall work to maintain as positive a public attitude towards each other as possible. H. Manner of Giving Notice Any notice or other communication of any sort required or permitted to be given hereunder shall be in writing and shall be sufficiently given if personally delivered or mailed by certified mail as follows: If to Seattle Audubon or Rainier Audubon: ' I Mr. Gerry Adams 28803 N.E. Big Rock Road Duvall, WA 98019 - 40 - i November 20, 1991 with a copy to: Seattle Audubon Society c/o John Lundin 8028 - 35th Avenue N.E. Seattle, WA 98115 If to Citizens for Renton Wildlands Preservation or Sierra Club: Ms. Susan Krom 3640 Ashworth North . Seattle, WA 98103 If to City of Renton: Mayor, City of Renton 200 Mill Avenue South Renton, WA 98055 with a copy to: Mr. Larry Warren City Attorney 100 South Second Street Post Office Box 626 Renton, WA 98057 If to First City: Mr. Dean Erickson First City Washington, Inc. 700 Fifth Avenue, Suite 6000 Seattle, WA 98104 with a copy to: Ms. Amy L. Kosterlitz Buck & Gordon 902 Waterfront Place 1011 Western Avenue Seattle, WA 98104 I. Governing Law This Agreement shall be governed by and construed in accordance with the laws of the State of Washington. - 41 - November 20, 1991 J. Effect of Recitals, Headings - The recitals set forth in Section I above are a material part of this Agreement and are fully incorporated in its terms. The headings and subheadings contained in this Agreement are solely for the convenience of the parties. The headings and subheadings are not part of this Agreement and are not to be used in construing this Agreement. K. Legal Descriptions First City retains the right to modify the legal descriptions of Tracts A, B and C to reflect the correct legal descriptions for these Tracts, and to insert any necessary corrections into Exhibits A, B and C without the necessity for additional signatures. L. Severability In the event that any provision of this Agreement shall, for any reason, be determined to be invalid, illegal or unenforceable in any respect, the Parties hereto shall negotiate in good faith and agree to such amendments, modifications or supplements of or to this Agreement or such other actions as shall, to the maximum extent practicable in light of such determination, implement and give effect to the intentions of the Parties as reflected herein. The other provisions of this I, Agreement shall remain in full force and effect. I ' - 42 - November 13, 1991 Parties as reflected herein. The other provisions of this Agreement shall remain in full force and effect. M. Authority to Bind The signatories hereto represent and warrant that they have the authority to bind their respective organizations or corporations. OlatEXECUTED this Jai: day of Lhmi , 1991. CITY OF RENTON, a Washington municipal corporation BY \ (4&&\""\ -J1 --. Ear'1 Clymer Mayor ATTEST: B City Cl APPROVED NS TO FORM: A A9-1AertA--;*V? ty Attorney FIRST CITY WASHINGTON, INC. , a Washington corporation By Its By Its - 42 - November 13, 1991 Parties as reflected herein. The other provisions of this Agreement shall remain in full force and effect. M. Authority to Bind The signatories hereto represent and warrant that they have the authority to bind their respective organizations or corporations. EXECUTED this . day of `V "/- , 1991. CITY OF RENTON, a Washington municipal corporation By Earl Clymer Mayor { ATTEST: By City Clerk APPROVED AS TO FORM: By City Attorney FIRST CITY WASHINGTON, INC. , a Washington corporation By �� 1 KE'4i4EM V. BEI.LAMY Its Mon ms By its DEAN R. ERICKSON VICE PRESIDENT - 42 - i November 20, 1991 SEATTLE AUDUBON SOCIETY, a Washington non-profit corporation B ✓'� Its Piz_ ( c D rv7 RAINIER AUDUBON SOCIETY, an unincorporated association of citizens By (-7;2146Ltk- Its A T t'f& "e-0 r - CITIZENS FOR RENTON WILDLANDS PRESERVATION, an unincorporated association of citizens 1� By ���,�-� Its hta-bidLeA SIERRA CLUB CASCADE CHAPTER, a Washington non-profit corporation BY < s-ba-47-N A*\ Its OA j\Vi i l_0_0.9 - 44 - November 13, 1991 STATE OF WASHINGTON ) ) ss. COUNTY OF KING ) On this day of /14144.w(Au. , 1991, before me personally appeared KENNETH BELLAMY of the corporation that executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that he was authorized to execute said instrument and that the seal affixed is the corporate seal of said corporation. In Witness Whereof I have hereunto set my hand and affixed by official seal the day and year first above written. Notary Public in and for the State of , residing at ,z My C• ,fission Expires: f-3u -SL STATE OF WASHINGTON ) ss. COUNTY OF KING ) On this cO day of /(0)/414e.t-- ; 1991, before me Y appeared eared GERRY ADAMS President of the Seattle Audubon Society and authorized agent of Rainier Audubon Society, that executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said non-profit corporation and unincorporated association of citizens, respectively, for the uses and purposes therein mentioned, and on oath stated that he was authorized to execute said instrument of said non-profit corporation and unincorporated association of citizens. In Witness Whereof I have hereunto set my hand and affixed - by official seal the day and ar first above written. o7 y Pu lic in and for th S to of GUG# //�4 , residing at My Commd.ssion Expires: 77 - 45 - I November 13, 1991 STATE OF WASHINGTON ) ) ss. COUNTY OF KING ) On this /f, , day of , 1991, before me personally appeared EARL C YMER, MAYOR of the municipal corporation that executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act 1 and deed of said municipal corporation, for the uses and purposes therein mentioned, and on oath stated that he was authorized to execute said instrument and that the seal affixed is the official seal of said municipal corporation. In Witness Whereof I have hereunto set my hand and affixed by official seal the day and year first above written. Notary P 'c in and for the State of , residing at My Commission Expires: / d _ . 9 STATE OF WASHINGTON ) ss. COUNTY OF KING ) / On this day of /l' /b9?bY , 1991, before me personally appeared DEAN ERICKSON of the corporation that executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that he was authorized to execute said instrument and that the seal affixed is the corporate seal of said corporation. In Witness Whereof I have hereunto set my hand and affixed by official seal the day and year first above written. No Pu lic in and for the tate of , residing at _4` Y► y Co ssion Expires: -q—/Cf,gy - 44 - November 20, 1991 STATE OF WASHINGTON ) ) ss. COUNTY OF KING ) On this .426 day of , 1991, before me personally appeared SUSAN OM, President of Citizens for Renton Wildlands Preservation and authorized agent of Cascade Chapter Sierra Clubthat executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said unincorporated association of citizens and non- profit corporation and, respectively, for the uses and purposes therein mentioned, and on oath stated that she was authorized to execute said instrument of said non-profit corporation and unincorporated association of citizens. j In Witness Whereof I have hereunto set my hand and affixed by official seal the day and year first above written. Not / Public in and for the Sta a of 5A i2 k'y/ , residing at 4 . My Comm.ssion Expires: -7 1_, g� - 47 - November 20, 1991 EXHIBITS TO MEMORANDUM OF AGREEMENT Exhibit A - Tract A Legal Description B - Tract B Legal Description C - Tract C Legal Description Dl/D2 - Original site plans E - FEIS Figures 1-3 showing Heron Rookery F - Tract A Schematic Site Plan G - Tract B Schematic Site Plan H - Landscape Areas Plan I - Construction Limit Zone J - Transportation Management Plan Goals and Elements K - Stipulated Dismissal L - Press Release M - Wetlands Mitigation Plan Elements N - Real Estate Purchase &. Sale Agreement for a Portion of Tract A and Attachments O - Real Estate Purchase & Sale Agreement for a Portion of Tract C and Attachments P - Option Agreement and Attachments FC17501►A11191.ALK - 48 - I � I EXHIBIT A BUSH, ROED & HITCHINGS. INC. I 1 LEGAL DESCRIPTION - TRACT A THAT PORTION OF THE SOUTHWEST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , KING COUNTY, WASHINGTON, AND OF THE NORTHWEST QUARTER OF SECTION 24, SAID TOWNSHIP AND RANGE, DE— SCRIBED AS FOLLOWS: BEGINNING AT THE INTERSECTION OF THE SOUTH LINE OF SAID SECTION 13 WITH THE SOUTHWESTERLY LINE OF TRACT A, WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 TO 102 , RECORDS OF SAID COUNTY; THENCE NORTHWESTERLY ALONG SAID SOUTH— WESTERLY LINE AND ON A CURVE OF WHICH THE RADIUS POINT BEARS I' NORTH 55°39 ' 29" EAST 422 . 96 FEET, A DISTANCE OF 87. 91 FEET; THENCE NORTH 22°26'02" WEST ALONG SAID SOUTHWESTERLY LINE 263.09 FEET TO A LINE DESIGNATED "PERMANENT EASEMENT BOUNDARY" ON U.S. DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE MAP, SHEET 1 OF 3 , ENTITLED "LAND RIGHTS WORK MAP, P-1 CHANNEL, EAST SIDE GREEN RIVER WPP, CITY OF RENTON, KING COUNTY, WASHINGTON;" THENCE ALONG SAID LINE AND ON A CURVE, THE RADIUS POINT OF WHICH BEARS NORTH 5°24 '02" EAST 165.04 FEET, A DISTANCE OF 112.06 FEET TO A POINT OF REVERSE CURVE, THE RADIUS POINT OF WHICH BEARS SOUTH 44°18 '11" WEST 172.96 FEET; THENCE ALONG SAID REVERSE CURVE AND SAID LINE 133.74 FEET; THENCE WEST ALONG SAID LINE 367.02 FEET TO A LINE WHICH BEARS NORTH FROM A POINT ON THE SOUTH LINE OF SAID SECTION 13 WHICH IS 1271.76 FEET EAST OF THE SOUTHWEST CORNER THEREOF; THENCE SOUTH 133.36 FEET TO THE NORTHEASTERLY LINE OF OAKESDALE AVENUE; THENCE SOUTH 70°46'34" EAST ALONG SAID NORTH— EASTERLY LINE 13 .95 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE RIGHT, ALONG SAID NORTHEASTERLY LINE, HAVING A RADIUS OF 922 .73 FEET; THENCE ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 5°32 ' 43" AN ARC LENGTH OF 89 . 305 FEET TO A POINT OF TANGENCY THEREON; THENCE CONTINUING ALONG SAID NORTHEASTERLY MARGIN SOUTH 65°13 ' 51" EAST 778 .46 FEET TO THE SOUTHWESTERLY LINE OF SAID TRACT A, WASHINGTON TECHNICAL CENTER; THENCE NORTHWESTERLY ALONG j SAID SOUTHWESTERLY LINE AND ON A CURVE TO THE RIGHT HAVING A RADIUS OF 422.96 FEET, A DISTANCE OF 110.02 FEET TO BEGINNING. TOGETHER WITH TRACT A OF THE PLAT OF WASHINGTON TECHNICAL CENTER, AS PER PLAT RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF KING COUNTY. THE ABOVE DESCRIBED PARC :.�CONTAINS 525 , 535 SQUARE FEET OR 12.0646 ACRES. , ---- — 911, _ � N. ti ;raw •&i s. ` .1. �; c,VCO it f V I O ; FIRST CITY WASHINGTON, INC. ii IC ' o� '' STEVEN A. HITCHINGS, P.L.S. NOVEMBER 6, 1991 . 2m2333�p JOB NO. 914 0 0/SUR 5 3—B ONAI. 5 EXPIRES 1/27/4 Z .r EXHIBIT B BUSh..cOED&HtTCHINGS,44c LEGAL DESCRIPTION - TRACT B That Portion of Tract 8, Washington Technical Center, as recorded in Volume 122 of Plats, Pages 98 through 102, records of King •County, Washington, lying Northerly of Southwest 7th Street as deeded to the City of Renton by deed filed and 8702100643, and Wes er Record terly of Naches Avenue Southwest as deeded to the City of Renton by deed filed under Recorder's No. 8702100644, records of said County. First City HRH Job Nos. 86230 & 86083 April 28, 1987 ALH/Surv. 17, 86230 ��� �S/ff o� .0%I.HlTGtjr. Ofytli 4) teoAN�S�c,e AL [ „or 1 EXHIBIT C jI (; 1 & LEGAL DESCRIPTION TO TRACT C BUSH rOED HITCHINGS, INC. I. I I NEW PARCEL 1: THAT PORTION OF THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST AND THE SOUTHWEST QUARTER OF SECTION 18, TOWNSHIP 23 NORTH, RANGE 5 EAST, W.M., KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: li BEGINNING AT THE INTERSECTION OF THE EAST LINE OF SAID SOUTHEAST QUARTER WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,099.78 FEET; THENCE NORTH 1°45'00" EAST 418.89 FEET TO A POINT ON THE SOUTHERLY LINE OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD RIGHT-OF-WAY, SAID POINT BEING ON A CURVE WITH A RADIUS OF 1005.37 FEET, THE RADIUS POINT OF WHICH BEARS NORTH 38°15'05" EAST; THENCE SOUTHEASTERLY ALONG SAID CURVE AND SOUTHERLY LINE 346.30 FEET; THENCE SOUTH 71°29'03" EAST ALONG SAID SOUTHERLY LINE 912.08 FEET TO THE NORTH LINE OF THE SOUTH 650.00 FEET OF THE SOUTHWEST QUARTER OF THE SOUTHWEST QUARTER OF SAID SECTION 18; THENCE NORTH 89°10'25" WEST ALONG SAID NORTH LINE 81.57 FEET TO THE POINT OF BEGINNING, CONTAINING 5.0000 ACRES. . %4rX / /325o f1-/i2 FIRST CITY DEVELOPMENT CORP. APRIL 19, 1988 ARTHUR L. HITCHINGS BRH JOB NO. 86114.04 SURV. 20A '��/1//////ice - -, odtR .HI7 _ / oc ,`� s /hcs '1 N :*- z • ?• FarSTE_4�`o ./ ti�`t. 'L SJQ II II I I I - r C BUSI-,. ..OED & HITCHINGS. INC. NEW PARCEL 2: THAT PORTION OF THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANCE 4 EAST W.M. , KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SOUTHEAST QUARTER WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1099.78 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 526.73 FEET; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT WITH A RADIUS OF 853.34 FEET A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 30.76 FEET; THENCE SOUTH 71°42'49" EAST 218.86 FEET; THENCE SOUTH 88°15'00" EAST 350.00 FEET TO A POINT WHICH BEARS NORTH 1°45'00"EAST FROM THE TRUE POINT OF BEGINNING; THENCE SOUTH 1°45'00" WEST 400.00 FEET TO THE TRUE POINT OF BEGINNING CONTAINING 5.000 ACRES, TO GETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. ld. 7"." A/a. /3 Z? ' ' 70 87 FIRST CITY DEVELOPMENT CORP. APRIL 19, 1988 ARTHUR L. HITCHINGS BRH JOB NO. 86114.04 SURV. 2Q fAca 3:4 to z ` `'te' fFG1SZERE'� `e'���11 1 rW ' / 1 NEW PARCEL 3 THAT PORTION OF THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M., KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SOUTHEAST QUARTER WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" i - WEST ALONG SAID NORTH LINE 1099.78 FEET; THENCE NORTH 1°45'00" EAST 400.00 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 88°15'00" WEST 350.00 FEET; THENCE NORTH 71°42'49" WEST 218.86 FEET; THENCE NORTH 12°19'12" WEST 109.81 FEET; THENCE SOUTH 71°22'34" WEST 174.45 FEET TO A POINT ON A CURVE HAVING A RADIUS OF 650.00 FEET THE RADIUS POINT OF WHICH BEARS SOUTH 67°05'58" WEST; THENCE NORTHWESTERLY ALONG SAID CURVE 174.47 FEET; THENCE NORTH 39°14'15" EAST II 453.11 FEET TO A POINT ON THE SOUTHERLY LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 1165.09 FEET , THE RADIUS POINT OF WHICH BEARS SOUTH 39° 14 ' 15" WEST; THENCE SOUTHEASTERLY ALONG SAID CURVE AND SOUTHERLY LINE 267.97 FEET; THENCE SOUTH �I i 37°35'03" EAST 308.70 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 1005.37 FEET A DISTANCE.OF 248.54 FEET TO A POINT WHICH BEARS NORTH 1°45'00" EAST FROM THE TRUE POINT OF BEGINNING; THENCE SOUTH 1°45'00" WEST 18.89 FEET TO THE TRUE POINT OF BEGINNING, EXCEPT THAT PORTION LYING WITHIN THE FOLLOWING TRACT: THAT PORTION OF CHARLES BROWNELL'S. DONATION CLAIM NO. 41, AND OF THE SOUTHWEST QUARTER AND THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE OF SAID SECTION 13 A DISTANCE OF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26 OF RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS, 1958; THENCE SOUTH 72°37'52" WEST ALONG THE SOUTH BOUNDARY OF SAID TRACT 26 A DISTANCE OF 382.60 FEET; THENCE NORTH 70°54'02' WEST ALONG SAID SOUTH BOUNDARY OF TRACT 26 A DISTANCE OF 73.50 FEET TO THE EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE NORTH O1°24'04" EAST ALONG SAID EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41 A DISTANCE OF 950.58 FEET TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS AND THE TRUE POINT OF• BEGINNING; THENCE WESTERLY ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 15°22'32" EAST HAVING A RADIUS OF 2,790.19 FEET, AN ARC DISTANCE OF 789.44 FEET THROUGH A CENTRAL ANGLE OF 16°12'39" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°35'11" EAST HAVING A RADIUS OF 2,580.74 FEET, AN ARC DISTANCE OF 437.40 FEET THROUGH A CENTRAL ANGLE OF 09°42'39" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS NORTH 41°17'50" WEST HAVING A RADIUS OF. 428.64 FEET, AN ARC DISTANCE OF 73.32 FEET THROUGH A CENTRAL ANGLE OF it 09°48'04" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°29'46" EAST HAVINQ A RADIUS OF 676.58 FEET, AN ARC DISTANCE OF 93.64 FEET THROUGH A CENTRAL ANGLE OF 07°55'47" TO A POINT OF TANGENCY; THENCE CONTINUING ALONG SAID PARALLEL LINE SOUTH 50°34'27" WEST A DISTANCE OF 248.50 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 39°25'33" EAST HAVING A RADIUS OF 696.89 FEET, AN ARC DISTANCE OF 40.09 FEET THROUGH A CENTRAL ANGLE OF 03°17'45" TO THE !I SOUTH LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY; THENCE NORTH 43°49'09" EAST ALONG SAID SOUTH LINE A DISTANCE OF 173.83 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 46°10'51" EAST HAVING A RADIUS OF 4,030.00 FEET, i II - NEW PARCEL 3 - PAGE 2 AN ARC DISTANCE OF 197.57 FEET THROUGH A CENTRAL ANGLE OF 02°48'32" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 43°22' 19" EAST HAVING A RADIUS OF 1,853.00 FEET, AN ARC DISTANCE OF 194.75 FEET THROUGH A CENTRAL ANGLE OF 06°01'18' TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 37°21'01" EAST HAVING A RADIUS OF 10543.00 FEET, AN ARC DISTANCE OF 186.51. FEET THROUGH A • CENTRAL ANGLE OF O1°00'49" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 36°20'12" EAST HAVING A RADIUS OF 1,657.00 FEET AN ARC DISTANCE OF 193.93 FEET THROUGH A CENTRAL ANGLE OF 06°42'20" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 29°37'52" EAST HAVING A RADIUS OF 6,738.00 FEET, AN ARC DISTANCE OF 197.76 FEET THROUGH A CENTRAL ANGLE OF O1°40'54" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 27°56'58" EAST HAVING A RADIUS OF 1,768.00 FEET, AN ARC DISTANCE OF 194.45 FEET THROUGH A CENTRALANGLE A GL OF 06 18'06" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE E0 THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 21°38'52" EAST HAVING A RADIUS OF 8603.00 FEET, AN ARC DISTANCE OF 204.54 FEET THROUGH A CENTRAL ANGLE OF O1°21'44" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING. ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 20°17'08" EAST HAVING A RADIUS OF 1,922.10 FEET, AN ARC DISTANCE OF 178.79 FEET THROUGH A CENTRAL ANGLE OF 05°19'46" TO A POINT OF COMPOUND CURVE ON THE EAST LINE OF • • ' SAID CHARLES BROWNELL DONATIQN LAND CLAIM NO. 41; THENCE CONTINUING ALONG SAID SOUTH LINE OF A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 14°57'22" EAST HAVING A RADIUS OF 2814.93 FEET, AN ARC DISTANCE OF 659.42 FEET THROUGH A CENTRAL ANGLE OF 13°25'19" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH . O1°32'03" EAST HAVING A RADIUS OF 1,165.09 FEET, AN ARC DISTANCE OF 1,097.05 FEET THROUGH A CENTRAL ANGLE OF 53°57'00" TO A POINT OF TANGENCY; THENCE CONTINUING ALONG SAID SOUTH LINE SOUTH 37°35'03" EAST A DISTANCE OF 308.70 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS NORTH 52°24'57" EAST HAVING A RADIUS OF. 1,005.37 FEET, AN ARC DISTANCE OF 45.82 FEET THROUGH A CENTRAL ANGLE OF 02°36'41" TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND , PACIFIC RAILROAD TRACKS; THENCE WESTERLY ALONG SAID PARALLEL LINE NORTH 40°11'44" WEST A DISTANCE OF 126.24 FEET TO A POINT OF CURVE; THENCE _ CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 49°48'16" WEST HAVING A RADIUS OF 1,829.78 FEET, AN ARC DISTANCE OF 309.67 FEET THROUGH A CENTRAL ANGLE OF 09°41'48"; THENCE NORTH.. 49°53'32" WEST ALONG SAID PARALLEL LINE A DISTANCE OF 167.07 FEET TO A POINT. OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT,. THE CENTER OF WHICH BEARS SOUTH 40°06'28" WEST HAVING A RADIUS OF 1,102.46 FEET, AN ARC DISTANCE OF 807.11 FEET THROUGH A CENTRAL ANGLE OF 41°56'46" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH O1°50'18" EAST HAVING A RADIUS OF 2,799. 19 FEET, AN ARC DISTANCE OF 659.24 FEET THROUGH A CENTRAL ANGLE OF 13°32'14" TO THE TRUE POINT OF BEGINNING. TOGETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON. EACH SIDE OF THE . FOLLOWING DESCRIBED CENTERLINE: u i / i 1 1 NEW PARCEL 3 — PAGE 3 COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES OVER THAT PORTION DESCRIBED AS FOLLOWS; COMMENCING AT THE MOST WESTERLY CORNER THEREOF; THENCE SOUTHERLY ALONG THE WESTERLY LINE OF THE ABOVE DESCRIBED MAIN TRACT 174.47 ' FEET TO THE SOUTHERLY LINE THEREOF AND THE TRUE POINT OF BEGINNING; THENCE NORTH 71°22'34" EAST ALONG SAID SOUTHERLY LINE 144.45 FEET; THENCE NORTH 1 12°19' 12" WEST 60.87 FEET; THENCE SOUTH 71°22'34" EAST 157 FEET TO SAID WESTERLY LINE; THENCE SOUTHERLY ALONG SAID WESTERLY LINE TO THE TRUE POINT OF ' BEGINNING. ,�,��., Co, %,e . /3130,'- 'Peg A`! FIRST CITY DEVELOPMENTS CORP. Q`� O ‘41 3 MAY 3, 1989 " 0� .BLACKRIVER CORPORATE PARK 0 HRH JOB NO. 86114.04/05 !I %. :, z �7SURV. 20A 1 e cisTe.1 ,.-- fee,' 7—Zi 69 _YsP 4. ( or +r�lisrxF Tel". II !I i II a 11 I I I' I BUSH ..OED & HITCHINGS. INC. NEW PARCEL 4: THAT PORTION OF THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , KING COUNTY, WASHINGTON AND TRACT 25, RENTON SHORELANDS 2ND SUPPLEMENTAL DESCRIBED AS FOLLOWS: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SOUTHEAST QUARTER WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT WITH A RADIUS OF 853.34 FEET A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 140.57 FEET; THENCE SOUTH 71°22'34" WEST 413.75 FEET; THENCE SOUTH 31°14'05" WEST 358.99 FEET; THENCE SOUTH 47°09'50" EAST 71.33 FEET; THENCE EAST 114.27 FEET; THENCE SOUTH 68.91 FEET TO THE NORTH LINE OF THE SOUTH 650.00 FEET OF SAID SECTION 13; THENCE SOUTH 88°15'00" EAST ALONG SAID NORTH LINE 454.26 FEET TO THE TRUE POINT OF BEGINNING, CONTAINING 5.8319 ACRES, TOGETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, . W.M., IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1 ,916.19 FEET TO THE TERMINUS OF SAID CENTERLINE. �o -7 x A/o. /3z30' -you FIRST CITY DEVELOPMENTS CORP. APRIL 19, 1988 ARTHUR L. HITCHINGS BRH JOB NO. 86114.04 SURV. 20A W lam'' ,� y� 0� FCiSTEFF. 44*. /Yqt lhKO`��l1 1 C BUSH. TOED & HITCHINGS. INc. NEW PARCEL 5: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST W.M. , KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13 WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF 'PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 2080.77 FEET; THENCE NORTH 68.91 FEET; THENCE WEST 114.27 FEET; THENCE NORTH 47°09'50" WEST 71.33 FEET; THENCE NORTH 31°14'05" EAST 358.99 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 42°06'08" WEST 215.00 FEET; THENCE SOUTH 80°04148" WEST 232.00 FEET; THENCE NORTH 12°01'00" WEST 40.-75 FEET; THENCE SOUTH 77°59'00" WEST 133.03 FEET; THENCE ON A CURVE TO f THE RIGHT HAVING A RADIUS OF 230.00 FEET A DISTANCE OF 111.56 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 160.00 FEET A DISTANCE OF 197.73 FEET; THENCE SOUTH 82°15'00" WEST 67.68 FEET; THENCE SOUTH 31°32'22" - WEST 71.06 FEET; THENCE NORTH 81°11'35" WEST 47.50 FEET TO A POINT OF A CURVE HAVING A RADIUS OF 650.00 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 52°42'12" EAST; THENCE EASTERLY ALONG SAID CURVE 1359.12 FEET TO A POINT WHICH BEARS NORTH 71°22'34" EAST FROM THE TRUE POINT OF BEGINNING; THENCE SOUTH - 71°22'34" WEST 239.30 FEET TO THE TRUE POINT OF BEGINNING, CONTAINING 6.3831 ACRES, TOGETHER WITH AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS; BEGINNING AT THE MOST EASTERLY CORNER OF THE ABOVE DESCRIBED TRACT; THENCE NORTH 71°22'34" EAST ALONG AN EXTENSION OF THE, SOUTHERLY LINE THEREOF 144.45 FEET; THENCE NORTH 12°19'12" WEST 60.87 FEET; THENCE SOUTH . 71°22'34" WEST 157 FEET TO THE NORTHEASTERLY LINE OF THE ABOVE DESCRIBED TRACT; THENCE SOUTHEASTERLY ALONG SAID NORTHEASTERLY LINE TO BEGINNING, ALSO . AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, , W.M., IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE ' NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF. PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST , ALONG SAID NORTH LINE 1,626.50 'FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19' 12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1 ,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. , I 0C S.� of . ;�/ • FIRST CITY DEVELOPMENTS CORP. ' It:_' APRIL 19, 1988 F f' ° ,ARTHUR L. HITCHINGS ,.: ;'BRH JOB NO. 86114.04 1. !. '� Lp 1 SURV. 20A `�ISTEf :�iii L.f '` cJc 1l -i NEW PARCEL 6 THAT PORTION OF THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE OF SAID SECTION 13, A DISTANCE OF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26 OF RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS, ACCORDING TO THE UNRECORDED PLAT THEREOF; THENCE SOUTH 72°37'52" WEST ALONG THE SOUTH BOUNDARY OF SAID TRACT 26, A DISTANCE OF 382.60 FEET; THENCE NORTH 70°54'02" WEST ALONG THE SOUTH BOUNDARY OF SAID TRACT 26, A DISTANCE OF 73.51 FEET TO THE EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE NORTH O1°24:04" EAST ALONG SAID EAST LINE 498.15 FEET; THENCE SOUTH 81°11'35" EAST 119.19 FEET TO A POINT ON CURVE HAVING A RADIUS OF 650.00 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 52°42'12" EAST; THENCE NORTHEASTERLY ALONG SAID CURVE 538.45 FEET TO THE TRUE POINT OF BEGINNING; THENCE CONTINUE ALONG SAID CURVE 646.21 FEET; THENCE NORTH 39°14'15" EAST 453. 11 FEET TO A POINT ON THE SOUTHERLY LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 1,165.09 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 39°14'15" WEST; THENCE WESTERLY ALONG SAID CURVE AND SOUTHERLY LINE 829.08 FEET TO A COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,814.93 FEET A DISTANCE OF 79.20 FEET TO A POINT WHICH BEARS NORTH 1°24'04" EAST FROM THE TRUE POINT OF BEGINNING; THENCE SOUTH 1°24'04" WEST 365.48 FEET TO THE TRUE POINT OF BEGINNING, EXCEPT THAT PORTION LYING WITHIN THE FOLLOWING TRACT: THAT PORTION OF CHARLES BROWNELL'S DONATION CLAIM NO. 41, AND OF THE SOUTHWEST QUARTER. AND THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE OF SAID SECTION 13 A DISTANCE OF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26 OF RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS, 1958; THENCE SOUTH 72°37'52" WEST ALONG THE SOUTH BOUNDARY ', OF SAID TRACT 26 A DISTANCE OF 382.60 FEET; THENCE NORTH 70°54'02' WEST ALONG SAID SOUTH BOUNDARY OF TRACT 26 A DISTANCE OF 73.50 FEET TO THE EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE NORTH O1°24'04" EAST ALONG SAID EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41 A DISTANCE OF 950.58 FEET TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS AS DEPICTED ON THAT CERTAIN RECORD OF SURVEY FOR LOT LINE ADJUSTMENT RECORDED UNDER RECORDING NO. 8312229001, RECORDS OF KING COUNTY, WASHINGTON, AND THE TRUE POINT OF BEGINNING; THENCE WESTERLY . ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 15°22'32" EAST HAVING A RADIUS OF 2,790.19 FEET, AN ARC DISTANCE OF 789.44 FEET THROUGH A CENTRAL ANGLE OF 16°12'39" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°35'11" EAST HAVING A RADIUS OF 2,580.74 FEET, AN ARC DISTANCE OF 437.40 FEET THROUGH A CENTRAL ANGLE OF 09°42'39" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS NORTH 41°17'S0" WEST HAVING A RADIUS OF 428.64 FEET, AN ARC DISTANCE OF 73.32 FEET THROUGH A CENTRAL ANGLE OF 09°48'04" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE 4ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°29'46" EAST HAVING A RADIUS OF 676. 58 FEET, AN ARC DISTANCE OF 93.64 FEET THROUGH A CENTRAL ANGLE OF 07°55'47" TO A POINT OF TANGENCY; THENCE CONTINUING ALONG SAID PARALLEL LINE SOUTH 50°34'27" WEST A DISTANCE OF 248.50 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 39°25'33" EAST HAVING A RADIUS OF 696.89 FEET, AN ARC DISTANCE OF 40.09 FEET THROUGH A CENTRAL ANGLE OF 03°17'45" TO THE SOUTH LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY; THENCE NORTH 43°49'09" EAST ALONG SAID SOUTH LINE 'A DISTANCE OF 173.83 FEET TO. A POINT OF (- NEW PARCEL 6 - PAGE 2 CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 46°10'51" EAST HAVING A RADIUS OF 4,030.00 FEET, AN ARC DISTANCE OF 197.57 FEET THROUGH A CENTRAL ANGLE OF 02°48'32" TO A POINT 1 OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 43°22' 19" EAST HAVING A RADIUS OF I 1 1,853.00 FEET, AN ARC DISTANCE OF 194.75 FEET THROUGH A CENTRAL ANGLE OF i 06°O1'18' TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 37°21'O1" EAST HAVING A RADIUS OF 10543.00 FEET, AN ARC DISTANCE OF 186.51 FEET THROUGH A CENTRAL ANGLE OF O1°00'49" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 36°20'12" EAST HAVING A RADIUS OF 1,657.00 FEET AN ARC DISTANCE OF 193.93 FEET THROUGH A CENTRAL ANGLE OF 06°42'20" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 29°37'52" EAST HAVING A RADIUS OF 6,738.00 FEET, AN ARC DISTANCE OF 197.76 FEET THROUGH A CENTRAL ANGLE OF 01°40'54" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 27°56'58" EAST HAVING A RADIUS OF 1,768.00 FEET, AN ARC DISTANCE OF 194.45 FEET THROUGH A CENTRAL ANGLE OF 06°18'06" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 21°38'52" EAST HAVING A RADIUS OF 8603.00 FEET, AN ARC DISTANCE OF • 204.54 FEET THROUGH A CENTRAL ANGLE OF O1°21'44" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 20°17'08" EAST HAVING A RADIUS OF 1,922.10 FEET, AN ARC DISTANCE OF 178.79 FEET THROUGH A CENTRAL ANGLE OF 05°19'46" TO A POINT OF COMPOUND CURVE ON THE EAST LINE OF SAID CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE CONTINUING ALONG SAID SOUTH LINE OF A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 14°57'22" EAST HAVING A RADIUS OF 2814.93 FEET, AN ARC DISTANCE OF 659.42 FEET THROUGH A CENTRAL ANGLE OF 13°25'19" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH O1°32'03" EAST HAVING A RADIUS OF 1,165.09 FEET, AN ARC DISTANCE OF 1,097.05 FEET THROUGH A CENTRAL ANGLE OF 53°57'00" TO A POINT OF TANGENCY; THENCE I CONTINUING ALONG SAID SOUTH LINE SOUTH 37°35'03" EAST A DISTANCE OF 308.70 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS NORTH 52°24'57" EAST HAVING A RADIUS OF 1,005.37 FEET, AN ARC DISTANCE OF 45.82 FEET THROUGH A CENTRAL ANGLE OF 02°36'41" TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS; THENCE WESTERLY ALONG SAID PARALLEL LINE NORTH 40°11'44" WEST A DISTANCE OF 126.24 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 49°48'16" WEST HAVING A RADIUS OF 1,829.78 FEET, AN ARC DISTANCE OF 309.67 FEET THROUGH A CENTRAL ANGLE OF 09°41'48"; THENCE NORTH 49°53'32" WEST ALONG SAID PARALLEL LINE A DISTANCE OF 167.07 FEET TO A POINT 1 OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 40°06'28" WEST HAVING A RADIUS OF 1,102.46 I FEET, AN ARC DISTANCE OF 807.11 FEET THROUGH A CENTRAL ANGLE OF 41°56'46" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO T4 LEFT, THE CENTER OF WHICH BEARS SOUTH O1°50' 18" EAST HAVING A RADIUS OF 2,790. 19 FEET, AN ARC DISTANCE OF 659.24 FEET THROUGH A CENTRAL ANGLE OF I 13°32' 14" TO THE TRUE POINT OF BEGINNING. TOGETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES I, DESCRIBED AS FOLLOWS: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, �I W.M. , IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: • NEW PARCEL 6 - PAGE 3 COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE . BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1 ,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. IC H1T y,� GO. 7 A/O. /323oy�-,o/z 47 lb 45, - IRST CITY DEVELOPMENTS CORP. o .•Y 3, 1989 . .-a c z •CKRIVER CORPORATE PARK •' *RH JOB NO. 86114.04/05 �'• F tO �� AURV. 20A f GISTER �.& SS��N�t[ L}t{V?PI" • a • • • l NEW PARCEL 7: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE OF SAID SECTION 13, A DISTANCE OF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26 OF RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS, ACCORDING TO THE UNRECORDED PLAT THEREOF; THENCE 'SOUTH 72°37'52" WEST ALONG THE SOUTH BOUNDARY OF SAID TRACT 26, A DISTANCE OF 382.60 FEET; THENCE NORTH 70°54'02" WEST ALONG THE SOUTH BOUNDARY OF SAID TRACT 26, A DISTANCE OF 73.51 FEET TO THE EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NUMBER 41; THENCE NORTH O1°24'04" EAST ALONG SAID EAST LINE 498.15 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°24'04" EAST ALONG SAID EAST LINE 509.58 FEET TO THE SOUTH LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT OF-WAY.;. THENCE EASTERLY ALONG SAID SOUTH LINE AND ON A CURVE HAVING A RADIUS 1, • OF 2,814.93 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 14°57'22" EAST, A DISTANCE OF 580.22 FEET; THENCE SOUTH 1°24'04" WEST 365.48 FEET TO A POINT OF 1 A CURVE HAVING A RADIUS OF 650.00 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 5°14'26" EAST; THENCE WESTERLY ALONG SAID CURVE 538.45 FEET TO A POINT WHICH BEARS SOUTH 81°11'35" EAST FROM THE TRUE POINT OF BEGINNING; THENCE NORTH 81°11'35' WEST 119.19 FEET TO THE TRUE POINT OF BEGINNING, . EXCEPT-THAT PORTION LYING WITHIN THE FOLLOWING. TRACT: ' I THAT PORTION OF CHARLES BROWNELL'S DONATION CLAIM NO. 41, AND OF THE SOUTHWEST QUARTER AND THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, DESCRIBED AS FOLLOWS: BEGINNING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE OF SAID SECTION 13 A DISTANCE OF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26 OF RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS, 1958; THENCE SOUTH 72°37'52" WEST ALONG THE SOUTH BOUNDARY • OF SAID TRACT 26 A DISTANCE OF 382.60 FEET; THENCE NORTH 70°54'02' WEST ALONG • SAID SOUTH BOUNDARY OF TRACT 26 A DISTANCE OF 73.50 FEET TO THE EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE NORTH O1°24'04" EAST ALONG SAID EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41 A DISTANCE OF 950.58 FEET TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS AS DEPICTED ON THAT CERTAIN RECORD OF SURVEY FOR LOT LINE ADJUSTMENT RECORDED UNDER RECORDING NO. 8312229001, RECORDS OF KING COUNTY, WASHINGTON, AND THE TRUE POINT OF BEGINNING; THENCE WESTERLY ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER' OF WHICH BEARS -_ SOUTH 15°22'32" EAST HAVING A RADIUS OF 2,790.19 FEET, AN ARC DISTANCE OF 789:44 FEET THROUGH A CENTRAL ANGLE OF 16°12'39" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°35'11" EAST HAVING A RADIUS OF 2,580.74 FEET, AN ARC DISTANCE OF 437.40 FEET THROUGH A CENTRAL 'ANGLE OF 09°42'39" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS NORTH 41°17'50" WEST HAVING A RADIUS OF 428.64 FEET, •AN ARC DISTANCE OF 73.32 FEET THROUGH A CENTRAL ANGLE OF (, 09°48'04" TO A POINT OF REVERSE' CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°29'46" EAST HAVING A RADIUS OF 676.58 FEET, AN ARC DISTANCE OF 93.64 FEET THROUGH A CENTRAL ANGLE OF 07°55'47" TO A POINT OF TANGENCY;' THENCE CONTINUING ALONG SAID PARALLEL LINE SOUTH 50°34'27" WEST A DISTANCE OF 248.50 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 39°25'33" EAST HAVING A RADIUS OF 696.89 FEET, AN ARC DISTANCE OF 40.09 FEET THROUGH A CENTRAL 'ANGLE OF 03°17'45" TO THE SOUTH LINE OF THE BURLINGTON NORTHERN RAILROAD •RIGHT-OF-WAY; THENCE NORTH 43°49'09" EAST ALONG SAID SOUTH LINE A DISTANCE OF 173.83 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 46°10'51" EAST HAVING A RADIUS OF 4,030.00 FEET, AN ARC DISTANCE OF 197.57 FEET THROUGH A CENTRAL ANGLE OF 02°48'32" TO A POINT 1 • NEW PARCEL 7 - PAGE 2 OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 43°22 ' 19" EAST HAVING A RADIUS OF 1 ,853.00 FEET, AN ARC DISTANCE OF 194 .75 FEET THROUGH A CENTRAL ANGLE OF 06°O1' 18' TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 37°21'O1" EAST HAVING A RADIUS OF 10543.00 FEET, AN ARC DISTANCE OF 186.51 FEET THROUGH A CENTRAL ANGLE OF O1°00'49" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 36°20'12" EAST HAVING A RADIUS OF 1,657.00 FEET AN ARC DISTANCE OF 193.93 FEET THROUGH A CENTRAL ANGLE OF 06°42'20" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 29°37'52" EAST HAVING A RADIUS OF 6,738.00 FEET, AN ARC DISTANCE OF 197.76 FEET THROUGH A CENTRAL ANGLE OF O1°40'54" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 27°56'58" EAST HAVING A RADIUS OF 1,768.00 FEET, AN ARC DISTANCE OF 194.45 FEET THROUGH A CENTRAL ANGLE OF 06°18'06" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 21°38'52" EAST HAVING A RADIUS OF 8603.00 FEET, AN ARC DISTANCE OF 204.54 FEET THROUGH A CENTRAL ANGLE OF O1°21'44" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 20°17'08" EAST HAVING A RADIUS OF 1,922.10 FEET, AN ARC DISTANCE OF 178.79 FEET THROUGH A CENTRAL ANGLE OF 05°19'46" TO A POINT OF COMPOUND CURVE ON THE EAST LINE OF SAID CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE CONTINUING ALONG SAID SOUTH LINE OF A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 14°57'22" EAST HAVING A RADIUS OF 2814.93 FEET, AN ARC DISTANCE OF 659.42 FEET THROUGH A CENTRAL ANGLE OF 13°25'19" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH O1°32'03" EAST HAVING A RADIUS OF 1,165.09 FEET, AN ARC DISTANCE OF 1,097.05 FEET THROUGH A CENTRAL ANGLE OF 53°57'00" TO A POINT OF TANGENCY; THENCE CONTINUING ALONG SAID SOUTH LINE SOUTH 37°35'03" EAST A DISTANCE OF 308.70 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS NORTH 52°24'57" EAST HAVING A RADIUS OF 1 ,005.37 FEET, AN ARC DISTANCE OF 45.82 FEET THROUGH A CENTRAL ANGLE OF 02°36'41" TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS; THENCE WESTERLY ALONG SAID PARALLEL LINE NORTH 40°11'44" WEST A DISTANCE OF 126.24 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 49°48' 16" WEST HAVING A RADIUS OF 1,829.78 FEET, AN ARC DISTANCE OF 309.67 FEET THROUGH A CENTRAL ANGLE OF 09°41'48"; THENCE NORTH 49°53'32" WEST ALONG SAID PARALLEL LINE A DISTANCE OF 167.07 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 40°06'28" WEST HAVING A RADIUS OF 1,102.46 FEET, AN ARC DISTANCE OF 807.11 FEET THROUGH A CENTRAL ANGLE OF 41°56'46" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH O1°50' 18" EAST HAVING A RADIUS OF 2,790. 19 FEET, AN ARC DISTANCE OF 659.24 FEET THROUGH A CENTRAL ANGLE OF 13°32'14" TO THE TRUE POINT OF BEGINNING. TOGETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: . . C NEW PARCEL 7 — PAGE 3 COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1,916.19 FEET TO THE TERMINUS OF SAID CENTERLINE. 14 �,,-"-- __ co. ..�� Az. /J2 - ,9oz � �, p4 WA'I <p FIRST CITY DEVELOPMENTS CORP. 40 Pi MAY 3, 1989 ��_ .4 • BLACKRIVER CORPORATE PARK t co , Z BRH JOB NO. 86114.04/05 fit /IP `' �� SURV. 20A -;i s FG TEEL� Jk' ail _ SS/ Svc ► =. - 3 %. A! LAN,�il1� i I � i li (- NEW PARCEL 8 THAT PORTION OF• THE SOUTHWEST QUARTER OF SECTION 13; TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON AND THAT PORTION OF JUNCTION ADDITION TO CITY OF SEATTLE, ACCORDING TO PLAT RECORDED IN VOLUME 12 OF PLATS, PAGE 75, RECORDS OF SAID KING COUNTY, TOGETHER WITH VACATED STREETS ADJOINING WHICH WOULD ATTACH TO SAID PREMISES BY OPERATION OF LAW, AND OF C.E. BROWNELL'S DONATION CLAIM NO. 41, DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE THEREOF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26, RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS 1958; THENCE SOUTH 72°37'52" WEST 382.60 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE NORTH 70°54'02" WEST ALONG SAID SOUTH LINE 73.51 FEET TO THE EAST LINE OF. SAID C.E. BROWNELL'S LAND DONATION LAND CLAIM NO. 41; THENCE NORTH 1°24'04" EAST ALONG SAID EAST LINE 498.15 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 81°11'35" WEST 26.31 FEET; THENCE SOUTH 82°15'00" WEST 92.99 FEET; THENCE SOUTH 35°29'30" WEST 143.18 FEET; THENCE NORTH 74°44'00 WEST 84 .85 FEET; THENCE SOUTH 60°16'00" WEST 67.00 FEET; THENCE SOUTH 12°16'00" EAST 97.35 FEET; THENCE SOUTH 68°06'46" WEST 110.53 FEET; THENCE NORTH 12°16'00" WEST 140.00 FEET; THENCE NORTH 19°41'48" EAST 80.00 FEET; THENCE NORTH 0°41'48"- EAST 240.00 FEET; THENCE NORTH 26°45'10" WEST 154.31 FEET TO A POINT ON THE SOUTHERLY LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 1768.00 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 26°45'10" EAST; THENCE EASTERLY ALONG SAID CURVE AND SOUTHERLY LINE 157.52 FEET TO A COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 8603.00 FEET A DISTANCE OF 204.54 FEET TO A COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 1,922.10 FEET A DISTANCE OF 178.79 FEET TO THE EASTERLY LINE OF SAID C.E. BROWNELL'S DONATION CLAIM NO. 41; THENCE SOUTH 1°24'04" WEST 509.59 FEET TO THE TRUE POINT OF BEGINNING, ALSO THAT PORTION OF THE FOLLOWING DESCRIBED TRACT LYING EAST OF SAID C.E. BROWNELL'S DONATION LAND CLAIM NO. 41: THAT PORTION OF CHARLES BROWNELL'S DONATION CLAIM NO. 41, AND OF THE SOUTHWEST QUARTER AND THE SOUTHEAST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN, DESCRIBED AS. FOLLOWS: • BEGINNING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE OF SAID SECTION 13 A DISTANCE OF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26 OF RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS, 1958; THENCE SOUTH 72°37'52" WEST ALONG THE SOUTH BOUNDARY OF SAID TRACT 26 A DISTANCE OF 382.60 FEET; THENCE NORTH 70°54'02' WEST ALONG SAID SOUTH BOUNDARY OF TRACT 26 A DISTANCE OF 73.50 FEET TO THE EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE NORTH O1°24'04" EAST ALONG SAID EAST LINE OF THE CHARLES BROWNELL DONATION LAND CLAIM NO. 41 A DISTANCE OF 950.58 FEET TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS AS DEPICTED ON THAT CERTAIN RECORD OF SURVEY FOR LOT LINE ADJUSTMENT RECORDED UNDER RECORDING NO. 8312229001, RECORDS OF KING COUNTY, WASHINGTON, AND THE TRUE POINT OF BEGINNING; THENCE WESTERLY ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 15°22'32" EAST HAVING A RADIUS OF 2,790.19 FEET, AN ARC DISTANCE OF 789.44 FEET THROUGH A CENTRAL ANGLE OF 16°12'39" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°35'11" EAST HAVING A RADIUS OF 2,580.74 FEET, AN ARC DISTANCE OF 437.40 FEET THROUGH A CENTRAL ANGLE OF 09°42'39" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS NORTH 41°17' 50" WEST HAVING A RADIUS OF 428.64 FEET, AN ARC DISTANCE OF 73. 32 FEET THROUGH A CENTRAL ANGLE OF 09°48'04" TO A POINT OF REVERSE CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 31°29'46" EAST HAVING A RADIUS OF 676.58 FEET, AN ARC DISTANCE OF 93.64 FEET THROUGH A CENTRAL ANGLE OF 07°55'47" TO A POINT OF TANGENCY; THENCE CONTINUING ALONG • C C NEW PARCEL 8 - PAGE 2 SAID PARALLEL LINE SOUTH 50°34'27" WEST A DISTANCE OF 248.50 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 39°25'33" EAST HAVING A RADIUS OF 696.89 FEET, AN ARC DISTANCE OF 40.09 FEET THROUGH A CENTRAL ANGLE OF 03°17'45" TO THE SOUTH LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY; THENCE NORTH 43°49'09" EAST ALONG SAID SOUTH LINE A DISTANCE OF 173.83 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 46°10'51" EAST HAVING A RADIUS OF 4,030.00 FEET, AN ARC DISTANCE OF 197.57 FEET THROUGH A CENTRAL ANGLE OF 02°48'32" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 43°22' 19" EAST HAVING A RADIUS OF 1,853.00 FEET, AN ARC DISTANCE OF 194.75 FEET THROUGH A CENTRAL ANGLE OF 06°O1'18' TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 37°21'O1" EAST HAVING A RADIUS OF 10543.00 FEET, AN ARC DISTANCE OF 186.51 FEET THROUGH A CENTRAL ANGLE OF O1°00'49" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON- A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 36°20'12" EAST HAVING A RADIUS OF 1,657.00 FEET AN ARC DISTANCE OF 193.93 FEET THROUGH A CENTRAL ANGLE OF 06°42'20" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 29°37'52" EAST HAVING A RADIUS OF 6,738.00 FEET, AN ARC DISTANCE OF 197.76 FEET THROUGH A CENTRAL ANGLE OF O1°40'54" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH ' "BEARS SOUTH 27 56 58 EAST HAVING A RADIUS OF 1,768.00 FEET, AN ARC DISTANCE OF 194.45 FEET THROUGH A CENTRAL ANGLE OF 06°18'06" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 21°38'52" EAST HAVING A RADIUS OF 8603.00 FEET, AN ARC DISTANCE OF 204.54 FEET THROUGH A CENTRAL ANGLE OF O1°21'44" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 20°17'08" EAST HAVING A RADIUS OF 1,922.10 FEET, AN ARC DISTANCE OF 178.79 FEET THROUGH A CENTRAL ANGLE OF 05°19'46" TO A POINT OF COMPOUND CURVE ON THE EAST LINE OF SAID CHARLES BROWNELL DONATION LAND CLAIM NO. 41; THENCE CONTINUING ALONG SAID SOUTH LINE OF A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH 14°57'22" EAST HAVING A RADIUS OF 2814.93 FEET, AN ARC DISTANCE OF 659.42 FEET THROUGH A CENTRAL ANGLE OF 13°25'19" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE RIGHT, THE CENTER OF WHICH BEARS SOUTH O1°32'03" EAST HAVING A RADIUS OF 1,165.09 FEET, AN ARC DISTANCE OF 1,097.05 FEET THROUGH A CENTRAL ANGLE OF 53°57'00" TO A POINT OF TANGENCY; THENCE CONTINUING ALONG SAID SOUTH LINE SOUTH 37°35'03" EAST A DISTANCE OF 308.70 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID SOUTH LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS NORTH 52°24'57" EAST HAVING A RADIUS OF 1,005.37 FEET, AN ARC DISTANCE OF 45.82 FEET THROUGH A CENTRAL ANGLE OF 02°36'41" TO A LINE 35 FEET SOUTHERLY OF AND PARALLEL WITH THE CENTERLINE OF THE EXISTING MOST SOUTHERLY TRACK OF THE CHICAGO, MILWAUKEE, ST. PAUL AND PACIFIC RAILROAD TRACKS; THENCE WESTERLY ALONG SAID PARALLEL LINE NORTH 40°11'44" WEST A DISTANCE OF 126.24 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 49°48'16" WEST HAVING A RADIUS OF 1,829.78 FEET, AN ARC DISTANCE OF 309.67 FEET THROUGH A CENTRAL ANGLE OF 09°41'48"; THENCE NORTH 49°53°32" WEST ALONG SAID PARALLEL LINE A DISTANCE OF 167.07 FEET TO A POINT OF CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 40°06'28" WEST HAVING A RADIUS OF 1,102.46 FEET, AN ARC DISTANCE OF 807.11 FEET THROUGH A CENTRAL ANGLE OF 41°56'46" TO A POINT OF COMPOUND CURVE; THENCE CONTINUING ALONG SAID PARALLEL LINE ON A CURVE TO THE LEFT, THE CENTER OF WHICH BEARS SOUTH 01°50'18" EAST HAVING A RADIUS OF 2,790. 19 FEET, AN ARC DISTANCE OF 659.24 FEET THROUGH A CENTRAL ANGLE OF 13°32' 14" TO THE TRUE POINT OF BEGINNING. C NEW PARCEL 8 - PAGE 3 TOGETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS; THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M., IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. %A)C A/O. 317,20 -0/17 00, 0of N kFIRST CITY DEVELOPMENTS CORP. /�`4•fn„ MAY 3, 1989 L► %���' o $LACKRIVER CORPORATE PARK 4 e • z tRH JOB NO. 86114.04/05 414 t pm- 0 a.1SURV. 20A 4_41,r1 04' sz£ 5J1`" v ;- 2;-3i �t LAKO� l_ ' MAY 08 '91 07:52 BR&H 206 323 7135 P.2/3 i' 1 it BUSH, ROED & HITCHINGS. INC. , NEW PARCEL 9 'CHAT PORMN OF THE SOUTHWEST ,QUARTER OP SECTION 13; TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON AND THAT PORTION OF JUNCTION ADDITION TO CITY OF SEATTLE, ACCORDING TO PLAT RECORDED IN VOLUME 12 OF PLATS, PAGE 75, RECORDS OF SAID KING COUNTY, TOGETHER WITH VACATED STREETS ADJOINING WHICH WOULD ATTACH TO SAID PREMISES BY OPERATION OF LAW, AND OF C.E. BROWNELL'S DONATION CLAIM NO. 41, DESCRIBED AS FOLLOWS: , l COMMENCING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE THEREOF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26, RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS 1958; l ,' THENCE SOUTH 72°37'52" WEST 382.60 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF ' SAID TRACT 26; THENCE NORTH 70°54'02" WEST ALONG SAID SOUTH LINE 73.51 FEET TO THE EAST LINE OF SAID C.E. BROWNELL'S DONATION CLAIM NO. 41; THENCE NORTH ' 1°24'04" EAST ALONG SAID EAST LINE 498.15 FEET; THENCE NORTH 81°11'35" WEST 26.31 FEET; THENCE SOUTH 82°15'00" WEST 92.99 FEET; THENCE SOUTH 35°29'30" WEST 143.18 FEET; THENCE NORTH 74°44'00 WEST 84.85 FEET; THENCE SOUTH 60°16'00" WEST 67.00 FEET; THENCE SOUTH 12°16'00" EAST 97.35 FEET; THENCE I' SOUTH 68°06'46" WEST .110.53 FEET TO THE TRUE POINT OF BEGINNING; THENCE SOUTH 68°06'46" WEST 265.00 FEET TO A POINT ON A CURVE HAVING A RADIUS OF 195.01 FEET, THE RADIUS POINT OF WHICH BEARS WEST; THENCE NORTHWESTERLY ALONG SAID - CURVE 267.83; THENCE NORTH 78°41'24 WEST 117.64 FEET; THENCE NORTH 1°24'04" EAST 200.97 FEET TO A POINT ON THE SOUTHERLY LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 10,543.00 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 36°50'42" EAST; THENCE NORTHEASTERLY ALONG SAID CURVE AND SOUTHERLY LINE 93.53 FEET TO A COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 1,657.00 FEET A DISTANCE OF 193.93 FEET TO A COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 6,738.00 FEET A DISTANCE OF 197.76 FEET TO A COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS j, OF 1 ,768.00 FEET A DISTANCE OF 36.93 FEET; THENCE SOUTH 26°45'10" EAST 154.31 FEET; THENCE SOUTH 0°41 '48" WEST 240.00 PEET; THENCE SOUTH 19'41'48" WEST 80.00 FEET; THENCE SOUTH 12°16'00" EAST 140.00 FEET TO THE TRUE POINT OF BEGINNING, CONTAINING 5.3332 ACRES, TOGETHER WITH AND SUBJECT TO AN EASEMENT ,� FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: THAT PORTION OP THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M., IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE 1 NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, , ' PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST 1 ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1 ,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. ,,005.1.4.,, CO. 7d?C Pafee/ 377f4W - Di/8 • / ' FIRST CITY DEVELOPMENTS CORP. / �l EV. MAY 4, 1988 ' • THUR L. HITCHINGS ; _ $ RH JOB NO. 86114.04 it -- 'L.� O '�iSURV. 2 0 4 i •�c/STEC<' a u� r 1 ' li . • BUSH,. .OED & HITCHINGS, INc. NEW PARCEL 10 THAT PORTION OF THE SOUTHWEST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON AND THAT PORTION OF JUNCTION ADDITION TO CITY OF SEATTLE, ACCORDING TO PLAT RECORDED IN VOLUME 12 OF PLATS, PAGE 75, RECORDS OF SAID KING COUNTY, TOGETHER WITH VACATED STREETS ADJOINING WHICH WOULD ATTACH TO SAID PREMISES BY OPERATION OF LAW, AND OF C.E. BROWNELL'S DONATION CLAIM NO. 41, DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE THEREOF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26, RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS 1958; THENCE SOUTH 72°37'52" WEST 382.60 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE NORTH 70°54'02" WEST 354.53 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE SOUTH 73°56'O1" WEST 130.08 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE SOUTH 41°16'07" WEST ALONG THE SOUTH LINE OF•SAID TRACT 26 A DISTANCE OF 316.18 FEET TO A POINT ON THE NORTH BOUNDARY OF A TRACT OF LAND DEEDED TO KING CP'JNTY AND DESCRIBED UNDER KING COUNTY RECORDING NUMBER 6607786, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 627.46 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 39°41'39" WEST; THENCE WESTERLY ALONG SAID CURVE AND NORTH BOUNDARY 373.11 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°24'04" EAST 582.36 FEET TO A POINT ON THE SOUTHERLY LINE OF THE BURLINGTON NORTHERN RAILROAD RIGHT-OF-WAY, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 10543.00 FEET, THE RADIUS POINT OF WHICH. BEARS SOUTH 36°50'42" EAST; THENCE WESTERLY ALONG SAID CURVE AND SAID SOUTHERLY LINE 92.98 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 1 ,853.00 FEET A DISTANCE OF 194.75 FEET TO A POINT OF COMPOUND CURVE, THE CENTER OF SAID CURVE BEARS SOUTH 43°22'19" EAST 4,030.00 FEET; THENCE WESTERLY ALONG SAID SOUTHERLY MARGIN AND CURVE TO THE LEFT, THROUGH A CENTRAL ANGLE OF 2°48'32", AN ARC DISTANCE OF 197.57 FEET TO A POINT OF TANGENCY; THENCE SOUTH 43°49'09" WEST ALONG SAID SOUTH MARGIN 271.00 FEET TO A POINT OF CURVE; THENCE ON A CURVE TO THE RIGHT ALONG SAID SOUTHERLY MARGIN, HAVING A RADIUS OF 1,571.00 FEET, THROUGH A CENTRAL ANGLE OF 7°32'02", AN ARC DISTANCE OF 206.57 FEET TO A POINT OF COMPOUND CURVE, THE CENTER WHICH BEARS NORTH 38°38'49" WEST 727.00 FEET; THENCE WESTERLY ALONG SAID SOUTHERLY MARGIN AND CURVE TO THE RIGHT, THROUGH A CENTRAL ANGLE OF 16°55'35", AN ARC DISTANCE OF 214.77 FEET TO A POINT OF COMPOUND CURVE, THE CENTER WHICH BEARS NORTH 21°43'14" WEST 1,055.00 FEET; THENCE WESTERLY ALONG SAID SOUTHERLY MARGIN AND CURVE TO THE RIGHT, THROUGH A CENTRAL ANGLE OF 11°24'08", AN ARC DISTANCE OF 209.95 FEET TO A POINT OF COMPOUND CURVE THE CENTER OF WHICH BEARS NORTH 10°19'06" WEST 696.00 FEET; THENCE WESTERLY ALONG SAID SOUTHERLY MARGIN - AND CURVE TO THE RIGHT THROUGH A CENTRAL ANGLE OF 3°44125", AN ARC DISTANCE OF 45.43 FEET TO THE EASTERLY MARGIN OF THE CHARLES MONSTER COUNTY ROAD; THENCE SOUTH 34°19 '34" EAST ALONG SAID EASTERLY MARGIN 43.56 FEET TO THE NORTH BOUNDARY OF SAID TRACT DEEDED TO KING COUNTY AND DESCRIBED UNDER KING COUNTY RECORDING NUMBER 6607786 THENCE NORTH 74°13'19" EAST ALONG SAID NORTH BOUNDARY 443.81 FEET; THENCE NORTH 59°53'47" EAST ALONG SAID NORTH BOUNDARY 377.52 FEET; THENCE EAST ALONG SAID NORTH BOUNDARY 280.69 FEET; THENCE SOUTH ALONG SAID NORTH BOUNDARY 25.00 FEET TO A POINT ON A CURVE HAVING A RADIUS OF 627.46 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH; THENCE EASTERLY ALONG SAID CURVE AND NORTH BOUNDARY 61 .59 FEET TO THE TRUE POINT OF BEGINNING, CONTAINING 5.0046 ACRES, TOGETHER WITH AND SUBJECT TO AN EASEMENT FOR INGRESS, EGRESS AND UTILITIES DESCRIBED AS FOLLOWS: BUSC ZOED & HITCHINGS, INC. NEW PARCEL 10 - PAGE 2 THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , IN KING COUNTY, WASHINGTON, LYING WITHIN 30 FEET ON EACH SIDE OF THE FOLLOWING DESCRIBED CENTERLINE: COMMENCING AT THE INTERSECTION OF THE EAST LINE OF SAID SECTION 13, WITH THE NORTH LINE OF THE SOUTH 650.00 FEET THEREOF, SAID NORTH LINE BEING ALSO THE NORTH LINE OF WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF SAID COUNTY; THENCE NORTH 88°15'00" WEST ALONG SAID NORTH LINE 1,626.50 FEET TO THE TRUE POINT OF BEGINNING; THENCE NORTH 1°45'00" EAST 225.00 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 853.34 FEET, A DISTANCE OF 209.55 FEET; THENCE NORTH 12°19'12" WEST 325.81 FEET; THENCE ON A CURVE TO THE LEFT HAVING A RADIUS OF 600.00 FEET A DISTANCE OF 803.66 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 2,745.00 FEET A DISTANCE OF 1 ,916. 19 FEET TO THE TERMINUS OF SAID CENTERLINE. o %sx �, 311f10 --O/ry FIRST CITY DEVELOPMENTS CORP. 4 REV. .r � MAY 4, 1988 'i ' -1 : ARTHUR L. HITCHINGS 11.A (ir :: BRH JOB NO. 86114.04 .} �� /:� ;� SURV. 20A / • it BUST-!r ., JED & HITCH INGS. INc. REMAINDER THAT PORTION OF THE SOUTH HALF OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, WILLAMETTE MERIDIAN; AND THAT PORTION OF JUNCTION ADDITION TO THE CITY OF SEATTLE, AS PER PLAT RECORDED IN VOLUME 12 OF PLATS, PAGE 75, RECORDS OF KING COUNTY; TOGETHER WITH VACATED STREETS ADJOINING WHICH WOULD ATTACH TO SAID PREMISES BY OPERATION OF LAW; AND OF CHARLES BROWNELL'S DONATION CLAIM NO. 41 AND OF THAT PORTION OF TRACTS 25 AND 26, RENTON SHORELANDS 2ND SUPPLEMENTAL, DESCRIBED AS FOLLOWS: COMMENCING AT THE SOUTH QUARTER CORNER OF SAID SECTION 13; THENCE NORTH 00°58'28" EAST ALONG THE NORTH-SOUTH CENTERLINE THEREOF 884.84 FEET TO THE SOUTHEAST CORNER OF TRACT 26, RENTON SHORELANDS SECOND SUPPLEMENTAL MAPS 1958 AND THE TRUE POINT OF BEGINNING; THENCE SOUTH 72°37'52" WEST 382.60 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE NORTH 70°54'02" WEST 354.53 FEET TO AN ANGLE -POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE SOUTH 73°56'O1" WEST 130.08 FEET TO AN ANGLE POINT IN THE SOUTH LINE OF SAID TRACT 26; THENCE SOUTH 41°16'07" WEST ALONG THE SOUTH LINE OF SAID TRACT 26 A DISTANCE OF 316.18 FEET TO A POINT ON THE NORTH BOUNDARY OF A TRACT OF LAND DEEDED TO KING COUNTY AND DESCRIBED UNDER KING COUNTY RECORDING NUMBER 6607786, SAID POINT BEING ON A CURVE HAVING A RADIUS OF 627.46 FEET, THE RADIUS POINT OF WHICH BEARS SOUTH 39°41'39" WEST; THENCE WESTERLY ALONG SAID CURVE AND NORTH BOUNDARY 373.11 FEET; THENCE NORTH 1°24'04" EAST 381.39 FEET; THENCE SOUTH 78°41'24" EAST 117.64 FEET; THENCE ON A CURVE TO THE RIGHT HAVING A RADIUS OF 195.01 FEET A DISTANCE OF 267.83 FEET; THENCE NORTH 68°06'46" EAST 375.53 FEET; THENCE NORTH 12°16'00" WEST 97.35 FEET; THENCE NORTH 60°16'00" EAST 67.00 FEET; THENCE SOUTH 74°44'00" EAST 84.85 FEET; THENCE NORTH 35°29'30" EAST 143.18 FEET; THENCE NORTH 82°15'00" EAST 92.99 FEET; THENCE SOUTH 81°11'35" EAST 193.00 FEET; THENCE NORTH 31°32'22" EAST 71.06 FEET; THENCE NORTH 82°15'00" EAST 67.68 FEET TO A POINT ON A CURVE HAVING A RADIUS OF 160.00 FEET, THE RADIUS POINT OF WHICH BEARS NORTH 86°34'52" EAST; THENCE SOUTHEASTERLY ALONG SAID CURVE 197.73 FEET TO A POINT OF COMPOUND CURVE; THENCE ON A CURVE HAVING A RADIUS OF 230.00 FEET A DISTANCE OF 111.56 FEET; THENCE NORTH 77°59'00" EAST 133.03 FEET; THENCE SOUTH 12°01'00" EAST 40.75 FEET; THENCE NORTH 80°04'48" EAST 232.00 FEET; THENCE SOUTH 42°06'08" EAST - 215.00 FEET; THENCE SOUTH 31°14'05" WEST 358.99 FEET; THENCE SOUTH 47°09'50" EAST 71 .33 FEET; THENCE EAST 114.27 FEET; THENCE SOUTH 68.91 FEET TO THE SOUTHERLY LINE OF SAID TRACTS 25 AND 26; THENCE NORTH 88°15'00" WEST ALONG SAID SOUTHERLY LINE 180.64 FEET; THENCE NORTH 33°07 '25" WEST ALONG SAID SOUTHERLY LINE 154.51 FEET; THENCE NORTH 27°21 '32" EAST ALONG SAID SOUTHERLY LINE 387.32 FEET; THENCE NORTH 83°17'25" WEST ALONG SAID SOUTHERLY LINE 171.17 FEET; THENCE SOUTH 46°22'22" WEST ALONG SAID SOUTHERLY LINE 324.66 FEET; THENCE SOUTH 72°37'52" WEST ALONG SAID SOUTHERLY LINE 76.33 FEET TO THE TRUE POINT OF BEGINNING. SITUATE IN THE CITY OF RENTON, COUNTY OF KING, STATE OF WASHINGTON. to ��x 4/0 all 7z� - 01i6 �• FIRST CITY DEVELOPMENTS CORP. ' f [/ REV. MAY 18, 1988 • ARTHUR L. HITCHINGS � : .• .r' I BkH JOB NO. 86114.04 r O j SURV. 20A • rwr 1013104 �"' TABULATION • g ` r�) a_. !/ Site Aren, . , o /} i 525,538 S.F. \,` / Building Area = 183.582 S.F. Footprint 83,582 S.F. i' Grose Coverage = 34.9% �, nu..ola3. �� .Site Coverage ±= 12,1% ;t 3wnav3+a Y Parking 791 Stalls I!1 " ` .h %. • ratio t 1/232 S.F. .l s.....1y.l.. fiCriTY NAP 1'400' P-1 Channel �j1 ��^^ • •sP 0�.�w..ti.w. , YI1 l3,� —...�.... y t.r t,ilj'- '�```Jco' �tpt.s'• .' / \` frt 1 4 7 / 040 / / C R ��.pLLG.. 1 ' 1 h ' 1 Yt ! )r .t,4• �LN�' �� • aCA0a O. ' �t ..... , .-----Vr---- ..-'''''. „- • totogl. • '���Y '% �. \� ACT A / 1,1 / if t ...: ' ' .., • /,i , k441�^ !,, •;' // i . I / 1. qs? '1-'s"L iiii N 1 1 a. Ii • — -. ttrtI)--» 1 TRACT A ,�—� t I . �� _�— ' — • P _ BLACKRIVER - iirt'"snil" CORPORATE PARK • r c1t Jiz UNION• tiA3104nON c• :.^�..�..yA MST OTT O[1'[l01\tCN:f COM. ��� PHASE VIII EXHIBIT D-1 10-31-91 — — - 4 • rS .-.-\' ♦\ /f i� / / 0/ •p.uru....24 41,------'s',.......U/ .....)/ \ • i • • DdlrAo.l tuna I. [i' \\ i T.• VICITYM:1 .^........ AP tit srli......, .k. V' n .ors. .:_.„_, _ • F: JJ, „ Q ifi.\(: .. i! • -\ iy. -y`\ •1,t I •-.:I =••~""' ti-1f 4:e1.r rend I . 3 x • ,i, /.. i..-• 0." \11 1 . ..•-••-' Pi II 4:sltiii—t ' si,. 0i .1 -:- ,, . 4 I, . iFt' ' i ita ;.. , c\t„----------"Ck. ,,i.s- ‘-•- ' 4 W trIr4t7"c .../"'" • u s' 1 li I!' ,.., f; / A ; \ ,,.... .\-.:‘,\ .\•., \ ' ,,,, • N. . i f� ,Ir %.I: .{\i/v, 1 )ttDtr• Y �\ `J 1, 1' .1 ^ --�.`„`drw1,T.M"r��.� � '1 I I„y d 't �•1 ��: \'{� �, �• .m..a p- '�ya�l*i'r+.::a3: r (1/1 i /� ,.a / Ill If /4/ ----t-ic. _ �• ',� •'1 G -. r. 1-i 01 - -1 / VI•••• ,s,f t.:, . ,, .,, .., ..., . "....." :toom..sf: r� :r ) `.• it.,: jr __' .I p s �� �• Ili 11: d . ; R1/ 1�. • (.; �L ,.I .1:I\'.1 111, I ks 1 4., ( ✓ • _ /2,,. '_.• oar a...M \��••1,; �7� 4 •ti. +‘ rr! TABULATION �., _ �-- '' ;�q .yyyL, ;� 41*/ • 2 R (,{,C K I a`' R Site Area :6E7,782 sF:` ,` �•y%�..L,/ ^...^ '4 --. BLA R l Y Budding Area 1266,700 SP. '�t .='�(\r •1r /, 'C. ® ) It'', Gross Coverage :et.9xm.,- • -•�• _ ;., CORPORATE PARK VN Site Coverage _27.6% (s+c►Ides Garage) 1'\ \ ,--" 7.% 7:sS t• ';�� RENTON WASHINGTON ' Parkin =1296 Mats 21220 SF. ``-•` ;�I / ^r- ' FIRST CITY DEVELOPMENTS CORP. F g ^. ��c--i. ' rli a .,l al.ndre WOO Swaim Parked) ..i:'a. =r(/ H c..np..t \ ' ,.. 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Pcit\\J Qr/�/ I �Z� w�SYSJ PHASE VIII �V i/1 /y 1 cm - cli EXHIBIT F 10-31-91 • ► -r0>2 4 MBA • ,-� �� . v►� :1 r ` C-it2E ( Nr :ca /claCOLartioJ = /t w &� orpata 4 -ram A/ 69 li /....s2- 3.9 ill. :IL —�' c11 • . .1 fir- - ;... <.;,:11�/. ... 6 it -.:..::::. .,ikT-. . . . : ., [y�J/y1�/r/w{y,{fit, Y • + '••• ~ `._ , -.{..,A: ::1,.',..T.,:z. ti. . ..,, _. t.,P(Mcf_AVE ' Ili - --it&-----00--10 i,,..:,* . el- •-•"°#e - ( 4 i . atrF-Mon) EVI vt e0-0°-P..- 10 . ... evffe' *it', ,... ..4.,. —.0 Igi 1 \ pie PM z - , -.,.. ., . ..,....,,,,:.,.,.... _ _ , , .,„ ., • ,, ,.. ... P 14 ,_ 4 Ario ire t•• ....-- .1p,..t.- i?..` -;0'4' .4AV NI I ti:?1:.i al.•?4,a a a ''-•., P.es . _. i.4 ::. t. ' A.'1 . ,s, SCHEMATIC SITE • C b0 • (.\., - .��-'. U' + '` 4. %• • • PLAN TRACT Bz . �. '' -• �• ve tl .BLACKRIVER • 4�� l e ; CORPORATE PARK S GL �w.«Y..cC:.� FERMI VlASM.f:GTOI{ ,o~` J • �`•• FIRST CITY DEYELO?I?ENTS CORD. 1 IIMINI,MIWINOIF • - i'� EXHIBIT G 10-31-91 40' Evergreen Hedge, after 5-7 years • 30' - Deciduous Tree,after 5-7 years 6 ft.fence w/slats• see'exhibits for , Conifer Tree, after 5-7 years 20' locations— _- t & - Bark Mulch I height of shrubs,conifer,&deciduous tree at time of planting(shaded) 10 lirk ��;:,6'Tall Personr,�.. automatic Irrigation� ia .,, � to of slo a varies o, parking lot ��- � p p ( ) • �);( - 0 ?zvim. '',f.:•{a1 + F�„��� ;r. `_ - existing plantings 5'to 40'tall • 100'to Ordinary High '""�;; j�� pond area SECTION• r Water Line 30'Landsca e wariest v 6' I 8' I 16' I I LARGE DECIDUOUS TREE 0 Red Alder(Alnus rubra)/Mountain Ash(Sorbus aucuparia) 6ti' �., . 12'to 15'In height @±20'O.C. 0 Lombardi!Poplar(Populus nigra 'Italica') I I 0 Vine Maple(Acer circinalum) . • ' I spread of shrub,conifer,& 0 Big Leaf Maple(Acer macrophyllum) parking lot --, ..-__!. 1,0,,,n,vm•-•,44.4 -=‘_ deciduous tree at time of planting &curb Y Bark Mulch 2 ';', i•.; � .:,::� CONIFER TREE 0 Grand Fir(Ables grandis) 0.:, I 6'to 8'In height @±12'o.c. 0 Douglas Fir(Pseudotsuga menzlesli) 6 ft. fence w/slats- 0 - 4 0 Western Red Cedar(Thuja pllcata) see exhibits for !: f '' spread of shrub, conifer,& locations ® ' };Y-- deciduous tree after 5-7 years curb line : : aQ ` ' EVERGREEN HEDGE I;::.:':. '- � .0 English Laurel(Prunus laurocerasus) ?r ar 24"to 30"In height @±5'o.c. O Strawberry Madrone(Arbutus unedo) automatic Irrigation A- ,R;:F�: g j:;:f � t�,,�., s Wax Myrtle(f�lyrlca californica) 3 f :...:,:. understory of hydroseed pi: K•;: erosion control grasses .•!. ® �� I g• 0' 10' • 40'Lineal Section i'.. �1 ' top of slope •• TRACTS A & B 20' 30' typical �®�:.�..: _ *.; ,, (varies) typ �:,E '" First City Washington,inc. Bethune 0 ._ • ::;��v _ - BLACKMER CORPORATE <>z,: wM:_::;v:,r ,;._ 7. 1 section Phase VII & VIiI LANDSCAPE AREAS PLAN PLAN VIEW Bark I H droseed ei Q Existing NW86041/NW89017 10-4-91 I of Wildflower Mix 1 Grasses Revised 10-31-91 EXHIBIT H • • CONSTRUCTION SEASON ZONE , ' UNam •4• i•,° 1 ( .... L 1` �',/4/r .�' ;._�,�' �\mot.?; \ ► l �� 1\ e . ..ter - <f � jf5 ,,47 ;\ ep.-::,..,,,,.:,>,...--,,,FP-N,4k,-,.. -,. ,..i - , -..:- • A ''''t,,,e ., ,, , ,-. .. .. .. i 014 , . ,srir... • ilbi /4.-4..,,..7..k.:,-:.,,,,,,,,,,,,_. vt.,,,.e..„". ..:,,'.5 4.'"?,,, ( il_,.. tii,\ --'..."--,..,:„....,..)..... r-- —;: —, - , j 7.-- - f5.- . \. .,, . ....- r/iiK, .. ..t... A. ._ ,(--------,--- ,,-,4-- ----- 9 P ' y r-- ill. r ,. trl•,,,,,, � • 0,qm, I I i grP, W AV' ° ---.4.0" ;;f6;"osoffe---4? SW. of AyE Iv rio • TRACT.A & B• • CONSTRUCTION SEASON LIMITS ZONE . • VNrt..',TR BLACKRIVER ' "" �. CORPORATE PARK (:j.L �^� minim. „�.s�c+oroa .. _ EXHIBIT I F Y �M IPRfT OTT Mil Conithn CO?. • • PHASE VIII 10-31.91 + EXHIBIT J TMP--PROCESS, GOALS AND IMPLEMENTATION MEASURES 1. Process. In order to reduce peak hour traffic from the Revised Project proposed for Tracts A and B of the Blackriver Corporate Park, First City shall prepare and implement a Transportation Management Program (TMP) . First City shall submit the TMP to the City's Development Services Division (DSD) at the time of building permit application(s) for the building(s) in the 1 ! Revised Project. The DSD shall approve the TMP by the time occupancy permits are sought by First City for any of the buildings. DSD's approval of the TMP shall be in accordance with the goal and implementation measures set forth below, and DSD shall not impose additional goals or implementation measures beyond those set forth herein. In its evaluation of how the TMP meets the standards set forth herein the DSD may consult with Metro's Transportation Section. 2. Goal. The goal of the TMP is to reduce employee single- occupant vehicle (SOV) trips made for home-work commuting purposes by 10 percent from the default values that can be calculated using trip generation methods described for general office buildings in Trip Generation (Institute of Transportation Engineers, 4th Edition, Land use category 710; see also adjustment procedures described on page 8) . 3 . Implementation Measures. The TMP shall contain the following Implementation Measures: a. Agreement to appoint a Transportation Coordinator to promote and coordinate the use of public transportation and high occupancy vehicles (HOVs) . b. Agreement to display site-appropriate transit and ridesharing information in prominent public locations. c. Agreement to g implement a program to provide a free one-month transit pass at the time of each new tenant occupancy in the building(s) to all new employees who desire such a transit pass. The passes should be for a maximum requirement of peak hour, two zones. d. Agreement to implement a parking management program which provides free preferential parking to high occupancy vehicles. e. Agreement to request tenants to promote an alternative work hour in order to reduce program peak hour trips. 4. Monitoring. In order to evaluate the effectiveness of the TMP, the applicant shall develop a monitoring program which will be submitted and approved as part of the TMP. The monitoring program shall include measures such as traffic counts and/or employee surveys to determine whether the ten percent (10%) SOV reduction goal set forth above is being met. The monitoring shall be conducted two years after the date of building occupancy, or after the building reaches 90% occupancy, whichever comes later, and shall be submitted to the DSD for review. 5. Additional Measures. In the event that the targeted ten percent (10%) SOV reduction goal set forth above is not achieved hieved by such time that the monitoring program is conducted, additional incentives for HOV participation shall be implemented (e.g. establishment of a vanpool program, subsidy of vanpool vehicle leases from Metro Transit, a guaranteed ride home program for registered vanpool users) . The effectiveness of these measures shall be monitored at the end of one year and if these measures are not increasing the HOV participation they shall be modified to increase their effectiveness. If, at the end of one additional year, these measures still have not increased HOV participation, they shall be discontinued. If the monitoring shows that these measures are increasing HOV participation, they shall be continued so long as they are increasing HOV participation, until the SOV reduction goal set forth above is achieved. FC175011M10221.ALK i I - I i 1 2 EXHIBIT K 3 4 BEFORE THE HEARING EXAMINER 5 OF THE CITY OF RENTON i ' 6 FIRST CITY WASHINGTON, INC. ) ) 7 Appellant, ) HEARING EXAMINER NO. ) 1 8 and ) ) STIPULATION AND ORDER OF 9 SEATTLE AUDUBON SOCIETY, ) DISMISSAL RAINIER AUDUBON SOCIETY, ) 10 CITIZENS FOR RENTON'S ) • WILDLANDE PRESERVATION, ) 11 SIERRA CLUB CASCADE CHAPTER ) ) 12 Appellants, ) 13 v. ) 14 CITY OF RENTON ) ) 15 Respondent. ) ) 16 ) 17 WHEREAS the SEATTLE AUDUBON SOCIETY, RAINIER AUDUBON 18 SOCIETY, CITIZENS FOR RENTON WILDLANDS PRESERVATION, and SIERRA 19 CLUB CASCADE CHAPTER (collectively the "Citizen Appellants") , 20 FIRST CITY WASHINGTON, INC. ("First City") , and Respondent City 21 of Renton, each believe respectively that they are entitled to a 22 decision in their favor upon the merits, but at the same time 23 having given due consideration to the unavoidable delays and 24 hazards of the appeals before the Hearing Examiner, the expenses 25 connected thereto, and the best interest of all the parties, and 26 recognizing the desirability that the above-captioned appeal be 27 terminated without further litigation or expense to Appellants 28 STIPULATION AND ORDER - 1 BUCK &OORDON 902 Waterfront Place♦ 1011 Western Avenue Seattle,Washington 98104-1097 (206) 382-9540 �l I 1 i II_ 2 1 and Respondent; and 3 WHEREAS the parties have agreed to a Memorandum Agreement 4 settling these appeals which has been attached to this 5 u Stipulation and which contains the environmental mitigation and 6 other conditions applicable to the proposed development of the 7 subject site. 8 1 , NOW THEREFORE the parties hereby move the Hearing Examiner 9 for an Order dismissing this action and remanding the matter Ito 10 the City of Renton's Administration for processing of .a. site plan 11 for approval in accordance with the terms of the Memorandum 12 I 1 Agreement. 13 I� DATED this day of , 1991. 14 it FIRST CITY WASHINGTON, INC. 4 15 ' I 16 By 17 Its 18 1 By 19 Its 20 CITY OF RENTON 21 22 By 23 Its Y 24 SEATTLE AUDUBON SOCIETY and RAINIER AUDUBON SOCIETY 25 26 By 1 27 28 STIPULATION AND ORDER - 2 BUCK &GORDON 1! 902 Waterfront Place♦ 1011 Western Avenue Seaale,Washington 98104-1097 I' (206) 382.9540 I -I 1 2 CITIZENS FOR RENTON WILDLANDS 3 PRESERVATION 4 By 5 SIERRA CLUB CASCADE CHAPTER 6 7 By 8 ORDER 9 THIS MATTER having been considered on the attached 10 Stipulation of the parties; . 11 IT IS HEREBY ORDERED that this matter be remanded to the 12 City of Renton for processing of a site plan approval in 13 accordance with the ,terms of the Memorandum Agreement. 14 AND IT IS FURTHER ORDERED that this action be dismissed 15 without cost to any party. 16 DONE at Renton, Washington this day of , . 17 1991. 18 RENTON HEARING EXAMINER 19 20 21 22 23 24 25 26 27 28 STIPULATION AND ORDER - 3 BUCK &GORDON 902 Waterfront Place• 1011 Western Avenue Seattle,Washington 98104-1097 (206) 382-9540 1 I 2 Presented by: 3 4 5 Lawrence Warren Attorney for Respondent 6 Approved as to Form; Notice 7 of Presentation Waived: 8 II 4- , 9 Amy L. Kosterlitz l 10 Attorney for Appellant First City Washington 11 II 12 Susan Krom 13 Appellant Citizens for Renton's Wildlands Preservation and Sierra 14 Club Cascade Chapter 15 �I 16 Gerry Adams 17 Appellant Seattle and Rainier Audubon Societies 18 19 FC175011F.XHIBIT.A.L K 20 21 22 23 24 I! 25 26 27 28 STIPULATION AND ORDER - 4 BUCK &GORDON it 902 Waterfront Place• 1011 Western Avenue Seattle,Washington 98104-1097 (206) 382-9540 EXHIBIT L PRESS RELEASE Today the City of Renton, representatives of Citizens for Renton's Wildlands Preservation, the Seattle and Rainier Audubon Societies, the Cascade Chapter of the Sierra Club, and First City Washington, Inc. announced that they have settled their disputes surrounding the office development proposed for the Blackriver Corporate Park area. Accordingly, the Parties have dismissed A i their appeals before the City of Renton Hearing Examiner. As part of the Agreement, the City will use monies from the Municipality of Metropolitan Seattle (Metro) targeted for open space and wetlands acquisition, and from King County's Open Space program, in addition to City funds, to purchase from First City approximately 36 acres of riparian forest, wetlands and wildlife habitat in the vicinity of the proposed development. When added to the land already dedicated for the Blackriver riparian forest and wetlands, this makes for a total of approximately 74 acres of open space and wildlife habitat, one of the largest "urban preserves" in the area. The parties have also agreed to several new environmental mitigation measures for the project which are calculated to protect wildlife habitat, and in particular the Great Blue Herons that have historically nested in the vicinity of the site. Earl Clymer, City of Renton mayor, said: "This agreement represents a win-win scenario for all parties involved. It will allow the City to proceed with its longstanding goal of preservation of additional portions of the Blackriver riparian forest, wetlands and wildlife habitat, as well as to resolve these disputes. The citizens groups involved in this agreement as well as the property owner are both to be given a lot of credit for making this happen. " Susan Krom, spokeswoman for Citizens for Renton's Wildlands Preservation, said "We have worked long and hard to ensure that there would be adequate protection for the important wildlife habitat in the Blackriver riparian forest area and we are delighted to have been able to reach our goal. " Gerry Adams concurred on behalf of the Seattle Audubon Society. Ken Bellamy, spokesman for First City Washington said: "We are pleased to be able to resolve this dispute on a basis that is protective of the environment and yet allows reasonable development of the site. First City has worked hard to protect the sensitive features of this site. " FC175011M10281ALK I r it 1 1II -I EXHIBIT M I' ELEMENTS OF WETLANDS MITIGATION PLAN 1. Mitigation Plan Goals a. Compensate for placement of fill material in 0.14 acres of wetlands, comprised of three small isolated wetlands located on Tracts A and B. b. Compensation is to be achieved by creating 0.21 acres of new wetlands on Tract B (a replacement ratio of 1.5 to 1, as recommended by Ecology) contiguous with a wetland which is a remnant of the old Blackriver Channel (the "Wetland") , which Wetland is to be preserved. tl I c. The new wetland will enlarge the Wetland and improve the structural and vegetative diversity in that wetland. d. The wetland mitigation plan will maintain an adequate water supply to the Wetland and allow establishment of the new wetland. e. The wetland mitigation will comply with the requirement for an average 50 foot buffer with a minimum of 25 feet. 2. Wetlands Mitigation Plan Elements The following elements will be included in the wetlands mitigation plan: a) Baseline information b) Environmental Goals (above) c) Work Plan d) Performance Standards e) Monitoring Program 1 1 , f) Contingency Plan g) Performance Bond FC175011A10291.ALK I ' u _ November 20, 1991 EXHIBIT N REAL ESTATE PURCHASE AND SALE AGREEMENT FOR A PORTION OF TRACT A THIS REAL ESTATE PURCHASE AND SALE AGREEMENT (the "Purchase Agreement") is between FIRST CITY WASHINGTON, INC. , a Washington corporation ("Seller") and the CITY OF RENTON, a municipal corporation ("Purchaser") , and is made for the purpose of purchase and sale of the following described real property. In consideration of the covenants and agreements hereinafter made, the parties agree as follows: 1. Relationship to Memorandum Agreement. The purchase and sale described herein is an element of that certain Memorandum of Agreement Regarding Blackriver Corporate Park Tracts A, B and C dated November 20, 1991 (the "Memorandum Agreement") between the parties hereto (the "Parties") and other parties. It is the intent of the Parties that this Purchase Agreement shall implement in part the terms of the Memorandum Agreement. In the event of any inconsistency between the terms and provisions of this Purchase Agreement and the Memorandum Agreement, the terms and provisions of the Memorandum Agreement shall govern. This Purchase Agreement shall become effective upon the date of execution of this Purchase Agreement and the Memorandum Agreement by all the parties thereto. In no event shall this Purchase Agreement become effective absent acceptance and execution of the Memorandum Agreement by all parties thereto. - 1 - I l-. November 20, 1991 i 2. Description of Property. Purchaser ag rees to purchase from Seller, and Seller agrees to sell unto Purchaser, a portion of the real property commonly known as Tract A of Blackriver I' Corporate Park, in King County, Washington, and referred to in II this Purchase Agreement as the "City Tract A Property," depicted in Attachment Al and legally described in Attachment B1, both attached hereto and incorporated herein. First City reserves a ten foot easement over a portion of the City y Tract A Property for installation and maintenance of landscaping, which easement area is depicted on Attachment A2 and legally described in Attachment B2. Purchaser hereby authorizes the insertion over its signature of the correct legal description of the above designated property !, if unavailable at the time of signing, or to correct the legal description previously entered if erroneous or incomplete. 3. purchase Price. The purchase price is One Million Four Hundred Sixty-one Thousand Six Hundred and No/100 Dollars ($1,461,600.00) , payable as follows: 3.1 The amount of One Million Two Hundred Ninety-four Thousand Two Hundred Seventy-two and No/100 Dollars ($1,294,272.00) in cash to be paid at time of closing. 3.2 The amount of One Hundred Sixty-seven Thousand Three Hundred Twenty-eight and No/100 Dollars ($167,328.00) by Purchaser executing a promissory note (in the form attached as I I, Attachment C) secured by a Deed of Trust (in the form as attached - 2 - I I November 20, 1991 s Attachment D) on the City Tract A Property and providing for quarterly interest payments at the rate of eleven percent (11%) per annum in the amount of Four Thousand Six Hundred One and 52/100 Dollars ($4,601.52) . The principal balance shall bear interest from date of closing. The first payment shall be due three months from date of closing. The note shall be due and payable in full one year after the date of closing, and may be prepaid at any time without penalty. 3.3 As additional consideration for the sale, Purchaser shall at closing: (a) Reimburse Seller in cash for Seller's costs as of the date of this Agreement occasioned by Purchaser's depositing contaminated and potentially contaminated soils on Tracts A and B, which Tracts A and B are legally described in Attachments E and F hereto, and incorporated herein, in the amount of One Hundred Thirteen Thousand Dollars ($113,000) ; (b) Pay directly or reimburse Seller for the costs of surveying the boundary and landscape easement of the City Tract A Property, and preparing the legal descriptions therefor; and (c) Provide evidence reasonably satisfactory to Seller of a completed lot boundary adjustment between City Tract A Property and the remaining portion of Tract A not being purchased hereunder; (d) Assume Seller's obligations regarding LID No. 332 as segregated pursuant to City of Renton Resolution 2809, and as - 3 - u � November 20, 1991 further allocated on a per square foot basis to the City Tract A Property, the principal balance in the approximate amount of One Hundred Seventy Thousand Dollars ($170,000.00) , the final figure to be determined as of the date of closing, and provide documentation reasonably satisfactory to Seller confirming the City's assumption and/or any required LID segregation. (e) Execute an indemnification in the form attached hereto as Attachment G, indemnifying Seller with regard to the remaining portion of Tract A not being purchased hereunder, and with regard to Tract B. (The indemnity covering the City Tract A Property p rty appears in Section 11 below. ) 4. Title. Title to the City Tract A Property shall be free of encumbrances or defects except LID No. 332, which shall -II be assumed by Purchaser at closing, the landscape easement legally described in Attachment B2 to be recorded at closing, a Memorandum of the Memorandum Agreement and other encumbrances, restrictions and reservations of record approved by Purchaser as provided below. Seller agrees to furnish to Purchaser a standard coverage Owner's Policy of Title Insurance, such policy to be effective on the date of closing and such policy to be issued by Transamerica Title Insurance Company. As soon as reasonably possible following the opening of escrow, but not later than ten (10) days following the last party's execution of this Agreement, Seller shall furnish to Purchaser a Preliminary Commitment (the "Commitment") on the City Tract A Property, together with copies - 4 - i November 20, 1991 of any exceptions set forth in the Commitment. Purchaser shall have ten (10) days from receipt of the Commitment within which to notify Seller in writing of Purchaser's objection to any exception shown in the Commitment; provided, however, that rights reserved in Federal Patents or State Deeds, building or use restrictions general to the district, existing easements not inconsistent with the intended use of the restricted parcels, and building or zoning regulations or provisions shall not be deemed exceptions. Seller shall have thirty (30) days from the date of receipt of Purchaser's objections to determine whether or not to cure such objections. If Seller declines to cure any of the exceptions objected to, Purchaser may either (i) elect to declare this Purchase Agreement void, or (ii) consummate the transaction in the same manner as if there had been no title objections. In the event Purchaser does not provide written notice of objections within the time period provided, Purchaser will be deemed to have accepted the condition of title as set forth in the Commitment. In the event Seller does not provide written notice to Purchaser that Seller declines or is unable to cure any of Purchaser's objections within the time period provided, Seller will be deemed to have agreed to cure such objections. Seller shall have until closing to cure any objections which it has agreed to cure. Seller and Purchaser shall split any cancellation fee for the Commitment, such fee not to exceed One Hundred Dollars ($100.00) . - 5 - November 20, 1991 5. Conveyance. Transfer of Seller's interest in the City Tract A Property shall be by Special Warranty Deed subject to the encumbrances more particularly described in paragraph 4 above, and also subject to the indemnification and release more particularly set forth in paragraph 11 below. 6. prorations. Taxes and the annual assessment for LID No. 332 for the current year shall be prorated as of the date of closing. Purchaser shall assume and be obligated to pay the balance remaining on the allocated portion of LID No.332, as provided in Section 3.3. 7. Condition to Closing. The obligations of the Seller under this Purchase Agreement are conditioned upon Seller's receipt of a site plan approval and shoreline permit for the remaining portion of Tract A and Tract B, on terms and conditions reasonably acceptable to Seller, in conformance with the Mitigation Conditions and other provisions of the Memorandum Agreement, all as more particularly set forth in the Memorandum Agreement, including appropriate density credits, landscaping, yard and setback waivers. This condition may be waived by Seller in its sole discretion and any such waiver shall be in writing. 8. Closing. This purchase,.shall be closed in the Seattle office of Transamerica Title Insurance Company (the "Closing Agent") , within 30 days after satisfaction or waiver of the I ' condition specified in Section 7 above, but in any event not later than two years from date of this Purchase Agreement, which - 6 - i November 20, 1991 shall be the termination date. The Parties will deposit in escrow with the Closing Agent all instruments and moneys Y necessary to complete this purchase in accordance with this Purchase Agreement. The premium for the standard coverage Owner's Policy of Title Insurance shall be paid by Seller. The escrow fee shall be paid one-half (1/2) each by the Parties. Purchaser shall pay recording fees and all costs and expenses normally attributable to the Purchaser. As this sale is to a municipal corporation, no real estate excise tax shall be assessed. 9. Possession. Seller shall deliver possession of the City Tract A Property to Purchaser on date of closing. 10. Condition of Property. The Purchaser has inspected the City Tract A Property and agrees to accept the City Tract A Property in its present condition. The Parties acknowledge that, as more particularly set forth in the Memorandum Agreement, a portion of the City Tract A Property is contaminated with hazardous substances. Purchaser agrees to accept the City Tract A Property "As Is", notwithstanding the presence of hazardous substances, and agrees to assume as between the Parties all costs, liability and risks which may arise to either Party from said hazardous substances. Purchaser agrees and acknowledges that Seller makes no representations or warranties with respect to the physical condition of the City Tract A Property, and that - 7 - November 20, 1991 the City Tract A Property is subject to the indemnity and release set forth below. 11. Indemnity and Release. Purchaser agrees to release Seller from and to indemnify, defend and hold Seller harmless from and against any and all claims, causes of action, demands, losses, liabilities, costs, damages and expenses (including, without limitation, attorneys' and consultants' fees, but without waiver of the duty to hold harmless) arising from or out of the entry of Purchaser, including the past entry of the Purchaser, its employees, contractors or agents onto the City Tract A Property or the placing of dredge spoils, excavated soils and I' fill material thereon by Purchaser, its employees, contractors or agents (such entry and activities hereinafter "Purchaser's Filling") , including but not limited to costs of investigation and remediation of soils or groundwater contamination caused by Purchaser's Filling, negotiating with agencies, and defense of lawsuits occasioned by Purchaser's Filling brought by agencies or third parties, and payment of fines and penalties occasioned by Purchaser's Filling, and will pay all Seller's costs and expenses, including attorneys' fees, incurred in enforcing this duty to release, indemnify, defend and hold harmless. The indemnityset forth in this paragraph shall survive closing. 12. Default. If either Party defaults in its contractual performance herein, the non-defaulting Party may seek specific performance (or mandamus) pursuant to the terms of this - 8 - November 20, 1991 Agreement, damages, rescission or injunction. Purchaser is purchasing the City Tract A Property in its proprietary capacity and not its governmental capacity and therefore, sovereign immunity does not apply to the enforcement of this Purchase Agreement or the Memorandum Agreement. The non-defaulting Party shall be entitled to recover its costs and attorney's fees in the event counsel is retained as a result of such default. A default under the terms of this Purchase Agreement shall be deemed a default under the terms of the Memorandum Agreement, and in such event the non-defaulting Party shall be entitled to all remedies provided by the Memorandum Agreement in addition to the remedies provided hereunder. 13. Miscellaneous. There are no verbal or other agreements which modify or affect this Purchase Agreement, other than the Memorandum Agreement. Time is of the essence of this Purchase Agreement. Purchaser has not consulted with, nor discovered the City Tract A Property through the use of a realtor or other agent and there are no finders fees or commissions due upon this transaction. Facsimile transmission of any signed original document, and retransmission of any signed facsimile transmission, shall be the same as transmission of an original. At the request of either Party, or the Closing Agent, the Parties will confir m facsimile transmitted signatures by signing an original document. Notices given under this Purchase Agreement shall be in writing and shall be delivered personally with written receipt therefor sent via facsimile transmission or sent - 9 - November 20, 1991 by certified mail, return receipt requested, to the following addresses: I _ Seller: Dean Erickson First City Washington, Inc. 700 Fifth Avenue, Suite 6000 Seattle, WA 98104 With copy to: Amy L. Kosterlitz Buck & Gordon 1011 Western Avenue, Suite 902 Seattle, WA 98104 Purchaser: Mayor, City of Renton 200 Mill Avenue South Renton, WA 98055 With copy to: Lawrence Warren City Attorney 100 South Second Street Post Office Box 626 Renton, WA 98057 14. Residency of Seller. Seller warrants to Escrow Agent that if Seller is an individual, Seller is not a non-resident alien for purposes of U.S. income taxation or if Seller is a corporation, partnership, trust, or estate, Seller is not a foreign corporation, foreign partnership, foreign trust or foreign estate. 15. Assignment. This Purchase Agreement is not assignable by Purchaser or Seller without the express written consent of the other Party to this Agreement, which consent will not be unreasonably withheld. 16. Governing Law. This Purchase Agreement shall be construed and interpreted under and shall be governed and - 10 - November 20, 1991 enforced in all respects according to the laws of the State of Washington. 17. Oral Agreements and Representations. There are no oral or other agreements, including but not limited to any representations or warranties, which modify or affect this Purchase Agreement. Seller shall not be bound by, nor liable for, any warranties or other representations made by any other person, partnership, corporation or other entity unless such representations are set forth in a written instrument duly executed by Seller. 18. Enforcement. Either Party's failure to insist upon or enforce strict performance by the other Party of any provision of this Purchase Agreement or to exercise any right under this Purchase Agreement shall not be construed as a waiver or relinquishment to any extent of such Party's right to assert or rely upon any such provision in any other instance, which provision shall remain in full force and effect. 19. Binding Nature. All rights and obligations arising out of this Purchase Agreement shall inure to the benefit of and be binding upon the respective successors, heirs, assigns, tenants, administrators, executors, and marital communities, if any, of the Parties to this Purchase Agreement. This Purchase Agreement shall not bind either Party unless it has been properly authorized, executed and delivered by Purchaser and Seller. - 11 - November 20, 1991 20. Captions. The captions and section headings of this Purchase Agreement are inserted for convenience only and shall not be deemed to limit or expand the meaning of any section. 21. Invalidity. If any provision of this Purchase Agreement shall be held invalid, void, or illegal, it shall in no way effect, impair or invalidate any of the other 'provisions of this Purchase Agreement. 22. Warranty and Representation of Authority. Seller and Purchaser each represent to the other that the person or persons signing this Purchase Agreement have authority to execute the same and to bind the Parties to this Purchase Agreement; and that it has obtained all consents, permissions, and approvals related to entry into this Purchase Agreement, its obligations under this Purchase Agreement or under any covenant, agreement, encumbrance, law, or regulation applicable to the Parties to this Purchase Agreement. 23. Counterparts. This Purchase Agreement may be executed in counterparts, which shall include signatures forwarded by telecopy which shall be treated as originals for all purposes. All executed counterparts shall constitute one agreement, binding on all of the Parties, notwithstanding that all the Parties have not signed the original or the same counterpart. Any such counterpart shall be admissible into evidence as an original against the person who executed that counterpart. - 12 - November 20, 1991 SELLER: PURCHASER: FIRST CITY WASHINGTON, INC. , THE CITY OF RENTON, a a Washin on corporation mun al corporation By: /, KiiiiiETE1 V.B ° Ear Cl er I >SFdf t �s� Mayor By: Dated: �`1�c.!, 'I\ . Its: DEAN R. ERICKSON APPRO D AS TO FORM: VICE ehtSIDENT Dated: 'y ✓�'v� c- v; (qv City Attorney ATTEST: id--)i . City Cle / - 13 - II November 20, 1991 ATTACHMENTS Al - Graphic depiction of the City Tract A A2 - Graphic depiction of Landscape Easement Area B1 - Legal description of City Tract A B2 - Legal description of Landscape Easement Area C - Form of promissory note D - Form of Deed of Trust E - Legal description of Tract A (prior to City purchase F - Legal description of Tract B G - Indemnification for remainder of Tract A and Tract li B FC17501 LWN11201.a1k - 14 - :;„� 1. p t !f%1'rfoL r•.•�• i.. r a- rII.1 111/�. I- a t •. .•- `-- mi. . 41 ww.....hf f �: / if 1044.1.61.1 ',.' .r•..A 'MOM MO 1%1Or ...................." \;%.**NNN \\\,ss\\ 1.1 Charnel 04 foe..;•:.e> • ‘‘ r lie _ 906 •wife•NI . 6".""'".""%.. TT.‘%' .. .,........ 0. '4. +�,'+. \'GYP }}' •. Yi'•'>rc�T' '• f `� isr .: .•.•.4' $&'>, •,. .r T'(7 4So-3't•jj)f•+ .,'•t,•.{:•};,�C'r'.s. :o., 'f --r f }r. ' S X" k ¢ .`2r : -f :}r--j.'::P t•Y• tYl,• r /f - y, ter'f• 0ti. 1 ►G ••�� \ y..:'.•.c[,F•-��'.'•^..� %FSRr;4 r. }T!`-:r. T•r io'r c } tr �S'. •�' :�;�� .;:;£::,,�• � �,,I�..�.x• ;:�„ ref � _ �� {•... z a ` I i �ify:j4`{rcvs ..„i�/5. tih5:. • Y.Wf • , .- `r-,„$• f... $. 1 % „ "(,:i v:s,,e`}. ti ..:SSY:YY:`e•,2`f%••• a—44.i eq• • s ',,t.:.r' , + CI >C x �.\ y • Ktir':• .. H 7C 3 i H H • , •tl� POH [ 73 a es*) i `r:s- o z 1 - �• ♦ - i ....i � � • V// ,.< w • y /t `. y f TRACT A `,!-` i T-- 17\1 Fir.0 t7'. BLACI<RIVER -- -• Oa MO: },! CORPORATE PARK RI .ri Runq .vlcw::i I '•-•d ��",,`—= nueattm:tn•Mtstso. ibr::rr) •-0;t�t PHASE VI7 11-8-91 ' WEST 367.02 _ 'o Ar44.16111° 44 ~ P1 R: 172.96 11‘N ei L2. 133.74 46c• �16 \Z 0: 5.32'43" br38•'S ' " • • \wa• sr R: 922.73 CITY '409 04 —N- 1• L: 8 9. 305 PARCEL L:1112.06 y e234.52'41• ` 4 I IW rNN : 165.04 �O ` + ���=1 00' IV.) *�•, L2 100.47 �\0 Q 7 (1 • 0 6S.la• >'S�Op9�IS' .0 UV LANDSCAPEAPE �d'N \ .m IR �� ' •ts EASEMENT � La SOxi / �S . q -N 89.30•04"E 21 4.53.-' y_. Q ch k / R.T. :13.50'35' IY I '� ��', R: 1003.00 I— u A: 59.43'39" 8N Ls 242.33 ,Wig R: 5 5.00 ' � S SS•,a,_ , Nus Li L: 57.33 �� 3 a,1. e:11'S4'29" R: A22.96 a L: 87.91 j 1271.76 I S (1,2 .__.-- It . c SOUTH LINE OF SECTION 13 4: 14.54106• R:422. 96 H H POINT OF BEGINNING L : 1 10,00 H ( REMAINING PARCEL) ►e cT3 H r 9 7d 9 H H a z O H ' Htn Di >e x i. �v � w z 4'S_ of a •t ‘al �� '� ~ H BUSH ROED �e HfT�CHINQ INC. ' • �`'� 1V/1 b a H a CIVIL ENGINEERS A LAND SURVEYORS �!?f; t*t EA z I SEAT7LE,YMSF#N TON f23.4144 V. , �}►'�i 7d M IV 1 H JOB 91400 1 1- 6-1991 MCI � ' ) CI Y t ATTACHMENT B-1 BUSH. ROED & HITCHINGS. INC. TO EXHIBIT N LEGAL DESCRIPTION - CITY TRACT A PROPERTY - THAT PORTION OF THE SOUTHWEST* QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M.; KING COUNTY, WASHINGTON, DESCRIBED AS FOLLOWS: BEGINNING AT THE MOST WESTERLY CORNER OF TRACT A, PLAT OF WASH- INGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 TO 102, RECORDS OF KING COUNTY, WASHINGTON, SAID WESTERLY - CORNER BEING AT THE INTERSECTION OF THE SOUTHWESTERLY LINE OF SAID "TRACT A" WITH A LINE DESIGNATED "PERMANENT EASEMENT BOUND- ARY" ON U.S. DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE MAP, SHEET 1 OF 3, ENTITLE "LAND RIGHTS WORK MAP, p-1 CHANNEL, EAST SIDE GREEN RIVER WPP, CITY OF RENTON, KING COUNTY, WASHING- TON;" THENCE ALONG SAID LINE AND ON A CURVE, THE RADIUS POINT OF WHICH BEARS NORTH 5.24'02" EAST 165.04 FEET A DISTANCE OF 112.06 FEET TO A POINT OF REVERSE CURVE, THE RADIUS POINT OF WHICH BEARS SOUTH 44.18'11" WEST 172.96 FEET; THENCE ALONG SAID REVERSE CURVE AND SAID LINE 133.74 FEET; THENCE WEST ALONG SAID LINE 367.02 FEET TO A LINE WHICH BEARS NORTH FROM A POINT ON THE SOUTH LINE OF SAID SECTION 13 WHICH IS 1,271.76 FEET EAST OF THE SOUTHWEST CORNER THEREOF; THENCE SOUTH 133.36 FEET TO THE NORTHEASTERLY LINE OF OAKESDALE AVENUE; THENCE SOUTH 70.46'34" EAST ALONG SAID NORTHEASTERLY LINE 13.95 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE RIGHT, ALONG SAID' NORTHEASTERLY LINE, HAVING A RADIUS OF 922.73 FEET; THENCE ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 5.32 '43" AN ARC LENGTH OF 89.305 FEET TO A POINT OF TANGENCY -- THEREON; THENCE CONTINUING ALONG SAID NORTHEASTERLY MARGIN SOUTH 65.13 '51" EAST 286.795 FEET TO THE BEGINNING OF A NON-TANGENT CURVE TO THE LEFT HAVING A RADIUS POINT WHICH BEARS NORTH 5°30'13" WEST A DISTANCE OF 55.00 FEET; THENCE NORTHEASTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 59°43 '39" AN ARC LENGTH OF 57. 33 FEET TO A POINT OF TANGENCY; THENCE NORTH 24°46 '09" EAST 15.70 FEET; THENCE NORTH 89°30 '04" EAST 214.53 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE LEFT HAVING A RADIUS OF 1003.00 FEET; THENCE EASTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 13.50'35" AN ARC LENGTH OF 242.33 FEET; THENCE NORTH 29.28 '39" WEST 207.28 FEET TO THE NORTHWESTERLY LINE OF SAID "TRACT A" OF THE PLAT OF WASHINGTON TECHNICAL CENTER; THENCE -- SOUTH 60.31'21" WEST ALONG SAID NORTHWESTERLY LINE 86.76 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE RIGHT THEREON, HAVING A RADIUS OF 165.04 FEET; THENCE SOUTHWESTERLY AND WESTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 34°52'41" AN ARC LENGTH OF 100.47 FEET TO THE POINT OF BEGINNING. THE ABOVE DESCRIBED PARCEL CO NS 162,400 SQUARE FEET OR 3.7282 ACRES. g, ,�.� • RST CITY WASHINGTON, INC. ' *! p ' STEVEN A. HITCHINGS P.L.S. ; NOVEMBER 6, 1991 (RE'VISED) 11.� _4 ;JOB NO. 91400/SUR 53-B t614L ! f ATTACHMENT B-2 BUSH. ROED & HITCHINGS, INC. TO EXHIBIT N LEGAL DESCRIPTION - 10' WIDE LANDSCAPE EASEMENT CITY TRACT A PROPERTY y THAT PORTION OF THE SOU THWEST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, WM . ., KING COUNTY, WASHINGTON, LYING WITHIN 10.00 FEET ON THE LEFT SIDE OF THE FOLLOWING DESCRIBED LINE: BEGINNING AT A POINT ON THE NORTHEASTERLY MARGIN OF OAKESDALE AVENUE WHICH LIES NORTH 65.13 '51" WEST 491.66 FEET FROM THE INTERSECTION OF SAID MARGIN WITH THE SOUTHWESTERLY LINE OF "TRACT A" OF THE PLAT OF WASHINGTON TECHNICAL CENTER, PER VOLUME 122 OF PLATS, PAGES 98 TO 102, RECORDS OF KING COUNTY, WASHINGTON; THENCE NORTHEASTERLY ALONG A NON-TANGENT CURVE TO THE LEFT HAVING 1 A RADIUS POINT WHICH BEARS NORTH 5.30'13" WEST 55.00 FEET, THROUGH A CENTRAL ANGLE OF 59.43'39", AN ARC LENGTH OF 57.33 FEET TO A POINT OF TANGENCY; THENCE NORTH 24.46'09" EAST 15.70 FEET; THENCE NORTH 89°30'04" EAST 214.53 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE LEFT HAVING A RADIUS OF 1003.00 FEET; THENCE EASTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 13.50'35" AN ARC LENGTH OF 242.33 FEET; THENCE NORTH 29.28 '39" WEST 207.28 FEET TO THE NORTHWESTERLY LINE OF SAID "TRACT A" OF THE PLAT OF WASHINGTON TECHNICAL CENTER AND THE TERMINUS OF SAID DESCRIBED LINE. A t i ti,1N. l FIRST CITY WASHINGTON, INC. J % � STEVEN A. HITCHINGS, P.L.S. �.IT� f : '`�; NOVEMBER 6, 1991 '� i.��. • JOB NO. 6,91400/SUR 53-B '.. tia g / �(!�� � 1 �.ti •�7 ; I LOD . ONES 1/27/at. I. - 1 b 1 ATTACHMENT C TO EXHIBIT N PROMISSORY NOTE $167,328.00 November , 1991 Renton, Washington FOR VALUE RECEIVED, the undersigned promises to pay to the order of FIRST CITY WASHINGTON, INC. , a Washington corporation, at its principal office located in the City of Seattle, Washington, or at such other place as any holder hereof may designate, the sum of One Hundred Sixty-Seven Thousand Three Hundred Twenty-Eight and no/100s Dollars ($167,328.00) in lawful money of the United States, together with interest thereon from the date hereof until maturity at the rate of eleven percent (11.0%) per annum. After maturity, or upon default, •the rate of interest shall be eighteen percent (18.0%) per annum. Interest in the amount of Four Thousand Six Hundred One and 52/100s Dollars ($4,601.52) shall be payable quarterly, one such payment of interest to become due three months after the date of this Promissory Note, on and every three months thereafter, until maturity. The principal and accrued and unpaid interest shall be due and payable one year from the date of this Promissory Note, on If default be made in compliance with any term, covenant or condition of the instrument securing this Promissory Note or in the payment of any installment when due under this Promissory Note, then, or at any time thereafter, at the option of the legal holder of this Promissory Note, the whole of the principal sum then remaining unpaid, together with all interest accrued thereon, shall become immediately due and payable without notice, and the lien given to secure its payment may be foreclosed. Failure to exercise this option, or any other right the holder may, in such event be entitled to, shall not constitute a waiver of the right to exercise such option or any other right in the event of any subsequent default. If this Promissory Note is placed in the hands of an attorney for collection or is collected through the Probate Court, the Bankruptcy Court or through other legal proceedings, the undersigned promises to pay a reasonable attorney's fee, whether or not suit is commenced. The undersigned waives demand, protest and notice of demand, protest and nonpayment. Notwithstanding anything to the contrary set forth herein, the undersigned shall have no personal liability for payment of the indebtedness evidenced hereby or for performance of the covenants set forth in this Promissory Note or in the Deed of Trust securing payment of this Promissory Note. The holder agrees not to assert or claim a deficiency or other personal judgment against the undersigned, but rather to look solely to the property encumbered it I _ by the Deed of Trust for payment of any such indebtedness or for performance of any such covenants. The foregoing shall not be deemed or construed to be a release of the indebtedness evidenced hereby to in any way impair, limit or otherwise affect . this Promissory Note or the Deed of Trust, or prevent the holder from �I naming the undersigned as a defendant in any action to enforce any remedy for a default, so long as no personal or deficiency judgment is sought or entered therein against the undersigned for payment of the indebtedness or performance of the covenants contained herein. All of the covenants, provisions and conditions herein !I contained are made on behalf of, and shall apply to and bind the respective successors and assigns of the parties hereto, jointly and severally. This Promissor y Note may be prepaid, in whole or in part, at any time prior to maturity, without penalty. iI This Promissory Note is secured by a Deed of Trust of even date in favor of the holder hereof affecting real property in King County, Washington. THE CITY OF RENTON, a municipal corporation By: Its: FC17S011O11201.ADB . � I II II ! - 1 ATTACHMENT D TO EXHIBIT.N Transamerica Title Insurance Co THIS SPACE PROVIDED FOR RECORDERS USE, milrA Service of Transamerica Corporation • Filed for Record at Request of Name Atoy.J.,..»Kaaterli tz Buck & Gordon Address LOU.39estern.Auenue,..Siti.te..9.02 City and State..Seattle.,..M.....381A.4. • • • Deed of Trust (For Use in the State of Washington Only) • THIS DEED OF TRUST,made this day of , 19.21 , between THE C;TY OF RENTON, a municipal oq;pgratior} ,GRANTOR, whose address is 200 Mill Avenue SouthA Renton, Washington 98055 TRANSAMERICA TITLE INSURANCE COMPANY, a corporation, TRUSTEE, whose address is 1200 Sixth Avenue,Seattle, Washington,and ..FIRST..CITX.FlASHI:NGTON,...IlIC.....a • Washingtan.xargarati.an ,BENEFICIARY, whose address is..700..Fifth..Avenue.,...Suite..6RA.0....Ssdtt]e�..YDA....QA1 Q4 WITNESSETH: Grantor hereby bargains,sells and conveys to Trustee in Trust,with power of sale, the • following described real property in itill9 County,Washington: See Exhibit A, attached hereto and by this reference incorporated herein. • • which real property is not used principally for agricultural or farming purposest together with all the ten- ements,hereditaments,and appurtenances now or hereafter thereunto belonging or in any wise apper- taining,and the rents,issues and profits thereof. • This deed is for the purpose of securing performance of each agreement of grantor herein contained, and payment of the sum of..Qna..Hunrired..S.i,Icty.-Shyen.111ONSdnd.ThM...1 6A?S.Voilarsn yy-eight e and.No/100 with interest,in accordance with the terms of a promissory note of even date herewith, payable to Bene- ficiary or order, and made by Grantor, and all renewals, modifications and extensions eof, and also such further sums as may be advanced or loaned by Beneficiary to Grantor,or any of their successors or assigns, together with interest thereon at such rate as shall be agreed upon. To protect the security of this Deed of Trust,Grantor covenants and agrees: 1. To keep the property in good condition and repair; to permit no waste thereof; to complete any building, structure or improvement being built or about to be built thereon; to restore promptly any building, structure or improvement thereon which may be damaged or destroyed; and to comply with all laws, ordinances, regulations, covenants, conditions and restrictions affecting the property. I , 2.To pay before delinquent all lawful taxes and assessments upon the property; to keep the property free and clear of all other it charges, liens or encumbrances impairing the security of this Deed of Trust. 3.To keep all buildings now or hereafter erected on the property described herein continuously insured against Iona by fire or other V hazards in an amount not leas than the total debt secured by this Deed of Trust. All policies shall be held by the Beneficiary, and j1 be in such companies as the Beneficiary may approve and have loss payable first to the Beneficiary,as its interest may appear,end then to the Grantor.The amount collected under any insurance policy may bo applied upon any indebtedness hereby secured in such order as the Beneficiary shall determine.Such application by the Beneficiary shall not cause discontinuance of any proceedings to foreclose this Deed of Trust.In the event of foreclosure,all rights of the Grantor in insurance policies than in force shall pass to the purchaser at the foreclosure sale. 4. To defend any action or proceeding purporting to affect the security hereof or the rights or powers of Beneficiary or Trustee,and J to pay all costs and expenses,including cost of title search and attorney's fees in a reasonable amount,in any such action or pro- ceeding,and in any suit brought by Beneficiary to foreclose this Deed of Trust. 6.To pay all costs,fees and expenses in connection with this Deed of Trust,including the expenses of the Trustee incurred in en- forcing the obligation secured hereby and Trustee's and attorney's fees actually incurred,as provided by statute. 6. Should Grantor fall to pay when due any taxes,assessments,insurance the properly h ereinabove described Beneficiarymaypremiums, liens, encumbrances ithIntermit ato theo rateat charges against the pay the same,and the amount so paid,with Interest set forth n the note secured hereby,shall be added to and become a part of the debt secured in this Deed of Trust, IT IS MUTUALLY AGREED THAT: 1. In the event any portion of the property Is taken or damaged in an eminent domain proceeding, the entire amount of the award or such portion as may be necessary to fully satisfy the obligation secured hereby,shall be paid to Beneficiary to be applied to said 1 1 obligation. 2. By accepting payment of any sum secured hereby after its due date,Beneficiary does not waive its right to require prompt pay ment when due of all other sums so secured or to declare default for failure to so pay. 3, The Trustee shall reconvey all or any part of the property covered by this Deed of Trust to the person entitled thereto,on written request of the Grantor and the Beneficiary,or upon satisfaction of the obligation secured and written request for reconveyance made by the Beneficiary or the person entitled thereto. 4. Upon default by Grantor in the payment of any indebtedness secured hereby or in the performance of any agreement contained l herein,all sums secured hereby shall immediately become due and payable at the option of the Beneficiary.In such event and upon written request of Beneficiary,Trustee shall sell the trust property,in accordance with the Deed of Trust Act of the State of Wash legion,at public auction to the highest bidder.Any person except Trustee maybid at Trustee's sale.Trustee shall apply the proceeds of the sale as follows: (1) to the expense of the sale,Including a reasonable rustee's fee and attorney's fee; (2) to the obligation i secured by this Deed of Trust; (3) the surplus,if any,shall be distributed to the persona entitled thereto. 6. Trustee shall deliver to the purchaser at the sale its deed,without warranty,which shall convey to the purchaser the interest in the property which Grantor had or had the power to convey at the time of his execution of this Deed of Trust,and such as lie may have acquired thereafter.Trustee's deed shall recite the facts showing that the sale was conducted in compliance with all the re- qquirements of law end'of this Deed of Trust,which recital shall bo prima facie evidence of such compliance and conclusive evidence thereof in favor of bona fide purchaser and encumbrancors for value. 6. The power of sale conferred by this Deed of Trust and by the Deed of Trust Act of the State of Washington is not an exclusive remedy;Beneficiary rosy cause this Deed of Trust to be foreclosed as a mortgage, 1 __ 7. In the event of the death,incapacity,disability or resignation of Trustee, Beneficiary may appoint In writing a successor trustee, i and upon the recording of such appointment in the mortgage recordv of the county in which this Deed of Trust is recorded, the successor trustee shell be vested with all powers of the original trustee.The trustee is not obligated to notify any party hereto of pending sale under any other Deed of Trust or of any action or proceeding in which Grantor,Trustee orBeneficiary shall be a party ' unless such action or proceeding is brought by the Trustee. 11 8, This Deed of Trust applies to,Inures to the benefit of,and is binding not only on the parties hereto,but on their heirs,devisees, I. legatees, administrators, executors and assigns. The term Beneficiary shall mean the holder and owner of the note secured hereby,whether or not named as Beneficiary herein. i By: Its; STATE OF WASHINGTON STATE OF WASHINGTON j COUNTY OF II _..». .._...._».»....... COUNTY OF.»». .»..» .._»...._... On this day personally appeared before me On this day of 19 before me,the undersigned,a Notary Public In and for the State of Wash- '•• ington,duly commissioned and sworn,personally appeared to me known to be the ina;vldu.i described in and _. _.»_..»_». _.._.._»_.» ». ._»» _. »» .».»»_.._»_........... 1' who executed the within and foregoing instrument, __ »» „ _._..».._.»...»..».._.._.._en_» »_.._. _.. _.._ I to ma known to be the..._.»......._. ..President and--....,.----Secretary, and acknowledged that signed the same1 g respectively of..._—..___..___.......»....._—-_. as.......-.-».._..-....free and voluntary act and deed, the corporation that executed the foregoing instrument, and acknowledged 11 for the uses and purposes therein mentioned. the said Instrument to be the free and voluntary act and deed of said corpor- ation,for the uses and purposes therein mentioned,and on oath stated that authorized to execute the said instrument and that the seal GIVEN under my hand and official seal this affixed is the corporate seal of said corporation ji Witness myhand and official seal hereto affixed the day and year first day of. .... , 19..._.... above written. _ 1 Notary Public in and for the State of Wash- n" , Notary Public In and for the Stets of Washdagton, ington, residing at residingat. _._._..».._.. .....».._. .._.... j __ REQUEST FOR FULL RECONVEYANCE Do not record.To be used only when note has been paid. TO: TRUSTEE. I' The undersigned is the legal owner and holder of the note and all other indebtedness secured by the within Deed of Trust.Said l note,together with all other indebtedness secured by said Deed of Trust,has been fully paid and satisfied;and you aro hereby re- quested and directed,on payment to you of any sums owing to you under the terms of said Deed of Trust,to cancel said note above mentionedDead of Trust,and to r all econvey,without warrvidences of anty,to the arness secured ties designated said byynthe test rrmseod to f said Deed of ou Trust,together ll thelth tha said estate now n held by you thereunder. II ll STATE OF ) ss. COUNTY OF ) I certify that I know or have satisfactory evidence that THE CITY OF RENTON signed this instrument, and on oath stated that he/she was authorized to execute the instrument and acknowledged it as the of the CITY OF RENTON, a municipal corporation, to be the free and voluntary act of such party for the uses and purposes mentioned in the instrument. SWORN TO AND SUBSCRIBED before me this day of , 1991. Notary Public in and for the State of , residing at My commission expires: • ATTACHMENT E BUSH. ROED & HITCHINGS. INC. TO EXHIBIT N I , LEGAL DESCRIPTION - TRACT A THAT PORTION OF THE SOUTHWEST QUARTER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , KING COUNTY, WASHINGTON, AND OF THE NORTHWEST QUARTER OF SECTION 24, SAID TOWNSHIP AND RANGE, DE- SCRIBED AS FOLLOWS: BEGINNING AT THE INTERSECTION OF THE SOUTH LINE OF SAID SECTION 13 WITH THE SOUTHWESTERLY LINE OF TRACT A, WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 TO 102, RECORDS OF SAID COUNTY; THENCE NORTHWESTERLY ALONG SAID SOUTH- WESTERLY LINE AND ON A CURVE OF WHICH THE RADIUS POINT BEARS NORTH 55°39 '29" EAST 422.96 FEET, A DISTANCE OF 87.91 FEET; THENCE NORTH 22.26'02" WEST ALONG SAID SOUTHWESTERLY LINE 263.09 FEET TO A LINE DESIGNATED "PERMANENT EASEMENT BOUNDARY" ON U.S. DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE MAP, SHEET 1 OF 3, ENTITLED "LAND RIGHTS WORK MAP, P-1 CHANNEL, EAST SIDE GREEN RIVER WPP, CITY OF RENTON, KING COUNTY, WASHINGTON;" THENCE ALONG SAID LINE AND ON A CURVE, THE RADIUS POINT OF WHICH BEARS NORTH 5°24'02" EAST 165.04 FEET, A DISTANCE OF 112.06 FEET TO A POINT OF REVERSE CURVE, THE RADIUS POINT OF WHICH BEARS SOUTH 44°18 '11" WEST 172.96 FEET; THENCE ALONG SAID REVERSE CURVE AND SAID LINE 133.74 FEET; THENCE WEST ALONG SAID LINE 367.02 FEET TO A LINE WHICH BEARS NORTH FROM A POINT ON THE SOUTH LINE OF SAID SECTION 13 WHICH IS 1271.76 FEET EAST OF THE SOUTHWEST CORNER THEREOF; THENCE SOUTH 133.36 FEET TO THE NORTHEASTERLY LINE OF OAKESDALE AVENUE; THENCE SOUTH 70°46'34" EAST ALONG SAID NORTH- EASTERLY LINE 13.95 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE RIGHT, ALONG SAID NORTHEASTERLY LINE, HAVING A RADIUS OF 922.73 FEET; THENCE ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 5°32 '43" AN ARC LENGTH OF 89.305 FEET TO A POINT OF TANGENCY THEREON; THENCE CONTINUING ALONG SAID NORTHEASTERLY MARGIN SOUTH 65°13 '51" EAST 778.46 FEET TO THE SOUTHWESTERLY LINE OF SAID TRACT A, WASHINGTON TECHNICAL CENTER; THENCE NORTHWESTERLY ALONG SAID SOUTHWESTERLY LINE AND ON A CURVE TO THE RIGHT HAVING A RADIUS OF 422.96 FEET, A DISTANCE OF 110.02 FEET TO BEGINNING. TOGETHER WITH TRACT A OF THE PLAT OF WASHINGTON TECHNICAL CENTER, AS PER PLAT RECORDED IN VOLUME 122 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF KING COUNTY. THE ABOVE DESCRIBED PARC .CONTAINS 525, 535 SQUARE FEET OR 12.0646 ACRES. ,`'- N. II (y�, y •►r" FIRST CITY WASHINGTON, INC. ••( ; �' 7/, STEVEN A. HITCHINGS, P.L.S. ("' NOVEMBER 6, 1991 ik'.� `�� 3bzsTs'a JOB NO. 91400/SUR 53-B OVAL LP 7 EXPIRES 1 f27/g Z ATTACHMENT F BUSt,..cOED&HR HINGS.Wvc TO EXHIBIT N LEGAL DESCRIPTION - TRACT B That Portion of Tract D, Washington Technical Center, as recorded • in Valuate 122 of Plats, Pages 98 through 102, records of King .County, Washington, lying Northerly of Southwest 7th Street as deeded to the City of Renton by dead filed under Recorder's No. 8702100643, and Westerly of Nachos Avenue Southwest as deeded to the City of Renton by deed filed under Recorder's No. 8702100644, records of said County. First City HRH Job Nos. 86230 is 86083 mil 28, 1987 .4h 8..if.t o/ /Sure. 17, 86230 • r f ATTACHMENT G TO EXHIBIT N INDEMNITY AGREEMENT This Indemnity Agreement made this ) day of November, 1991 by and between the City of Renton ("the City") and First City Washington, Inc. ("First City") . RECITALS A. WHEREAS, the City deposited dredge spoils, excavated soils and fill material on Tracts A and B of the Blackriver Corporate Park ("Tracts A and B") ; and B. WHEREAS, the City has agreed in previous indemnity agreements to accept responsibility as between itself and the owner of Tracts A and B for any claims, causes of action, demands, losses, liabilities, costs, damages and expenses arising out of the City's filling activities; and C. WHEREAS, the City is purchasing a portion of Tract A known as the "City Tract A Property" which the Parties acknowledge may contain contamination exceeding standards established by the state Model Toxics Control Act; and D. WHEREAS, the City Tract A Property contains the only contamination or potential contamination identified by the Parties to date which is in violation of any ordinances, statutes, laws or other regulations. However, the City is willing to indemnify and hold First City harmless in the event additional contamination is discovered on the portion of Tract A which First City will own after the City's purchase of the City Tract A Property (the "Tract A Remainder") or on Tract B. The Tract A Remainder is more particularly described in Appendix A, and Tract B is more particularly described in Appendix B, which Appendices are attached hereto and by this reference incorporated herein. � I NOW THEREFORE, as partial consideration for purchase of the City Tract A Property, and for other good and valuable consideration, the legal sufficiency of which is hereby acknowledged, the Parties hereby agrees as follows: 1. Indemnification. The City agrees to release First City and to indemnify, defend and hold First City harmless from and against any and all claims, causes of action, demands, losses, liabilities, costs, damages and expenses (including without limitation attorneys' and consultants' fees, but without waiver of the duty to hold harmless) arising out of or from the entry of the City, including the past entry of the City, its employees, contractors or agents onto the Tract A Remainder or Tract B, or the City's, its employees, contractors or agents placing of dredge spoils, excavated soils and fill material thereon (hereinafter, such entry and activities known as "the City's -, Filling") , including but not limited to costs of investigation and remediation of soils or groundwater contamination caused by the City's Filling, negotiating with agencies, and defense of lawsuits caused by the City's Filling, brought by agencies or third parties, and payment of fines and penalties occasioned by the City's Filling and will pay all First City's costs and expenses, including attorney's fees, incurred in enforcing this duty to release, indemnify, defend and hold harmless. 2. Covenants Run With the Land.The benefits conferred hereby, and the obligations imposed hereunder, shall operate as covenants running with the land. 3. Successors and Assigns. The City shall not assign its obligations hereunder. The rights and obligations of First City shall inure to the benefit of and be binding upon its successors and assigns and the mortgagees of First City and its successors and assigns. 4. Attorney Fees. The prevailing party in any action brought to enforce or interpret the terms of this Indemnification Agreement shall be entitled to recover its court costs, consulting fees and reasonable attorneys' fees incurred in said action, whether or not suit is commenced. IN WITNESS WHEREOF, the parties have executed this Agreement as of the day and year first above written. FIRST CITY WASHINGTON,INC. , a Washington corporation BY: le��(/� Its• GEM Gi g, :_:aF;y / nranCI:s ..11; By: Its: DEAN R.FRICKSON CITY OF REN ON PRESIDENT CJ r 1 By: G��.` C��;'. '� I\\.� Earl Clymer Mayor - 2 - • - • II ATTEST: • Y- 44-i-$4 2rIer APPROV D AS TO FORM: titi City Attorne STATE OF WASHINGTON ) ) ss. COUNTY OF KING ) On this day of , 19_, before me personally appeared and of the corporation that executed the within and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said corporation, for the uses and purposes therein mentioned, and on oath stated that 1 he/she was authorized to execute said instrument and that the seal affixed is the corporate seal of said corporation. In Witness Whereof I have hereunto set my hand and affixed by official seal the day and year first above written. Notary Public in and for the State of residing at My Commission Expires: _ - 3 - STATE OF WASHINGTON ) ss. COUNTY OF KING ) On this hd day of , 192i, before me personally appeared ni�nn itA oc c f and >V f) th municipal corporation that executed the within and"fdtegoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said municipal corporation for the uses and purposes therein mentioned, and on oath stated that he/she was authorized to execute said instrument and that the seal affixed is the official seal of said municipal corporation. In Witness Whereof I have hereunto set my hand and affixed by official seal the day and year first above written. \VqQ ) Nota Pull Pteilln and or thp State of )(tamhuirplk, , residing at Q)I, My Commission Expires: 1 ,q0y FCI7S0J%A11141.ALK — 4 - • APPENDIX A TO INDEMNITY AGREEMENT • BUSH, ROED a HITCHINGS, INc. . it LEGAL DESCRIPTION ( EMAINDER PARCEL) DLACERIVER CORbbRA PARR - PEASE VIII THAT PORTION OF THE SOUTHWEST 0 TER OF SECTION 13, TOWNSHIP 23 NORTH, RANGE 4 EAST, W.M. , KING OUNTY, WASHINGTON, AND OF. THE NORTHWEST QUARTER OF SECTION 24 SAID TOWNSHIP AND RANGE, DE- SCRIBED AS FOLLOWS: BEGINNING AT THE INTERSECTION OF THE SOUTH LINE OF SAID SECTION 13 WITH THE SOUTHWESTERLY-LINE 0 TRACT A, WASHINGTON TECHNICAL CENTER AS RECORDED IN VOLUME 1 2 OF PLATS, PAGES 98 TO 102, RECORDS OP SAID COUNTY; THENCE pRTHWESTERLY ALONG SAID SOUTH- 1 WESTERLY LINE AND ON A CURVE 01 WHICH THE RADIUS POINT BEARS 1 NORTH 55°39 '29" EAST 422.96 FEET, A DISTANCE OF 87.91 FEET; THENCE NORTH 22°26102" WEST ALONG SAID SOUTHWESTERLY LINE 263.09 FEET TO A LINE DESIGNATED "PERMANENT EASEMENT BOUNDARY" ON U.S. DEPARTMENT OF AGRICULTURE, SOIL NSERVATION SERVICE MAP, SHEET 1 OF 3, ENTITLED "LAND RIGHTS WOR MAP, P-1 CHANNEL, EAST SIDE GREEN RIVER WPP, CITY OF RENTON, NG COUNTY, WASHINGTON;" THENCE ALONG SAID LINE AND ON A CURVE, HE RADIUS POINT OF WHICH BEARS NORTH 5424'02" EAST 165.04 FEET, DISTANCE OF 112.06 FEET TO A POINT OF REVERSE CURVE, THE RAD US POINT OF WHICH BEARS SOUTH 44°18'11" WEST 172.96 FEET; THENCE ALONG SAID REVERSE CURVE AND I' SAID LINE 133.74 FEET; THENCE'WES ALONG SAID LINE 367.02 FEET TO A LINE WHICH BEARS NORTH FROM A INT ON THE SOUTH LINE OF SAID SECTION 13 WHICH IS 1271.76 FE EAST OF THE SOUTHWEST CORNER THEREOF; THENCE SOUTH 133.36 FEE TO THE. NORTHEASTERLY LINE OF 1 OAICESDALE AVENUE; THENCE SOUTH 7 "46134" EAST ALONG SAID NORTH- EASTERLY LINE 13.95 FEET TO THE #EGINNING OF A TANGENT CURVE TO THE RIGHT, ALONG SAID NORTHEASTERLY LINE, HAVING A RADIUS OP 922.73 FEET; THENCE ALONG SAID C1?RVE THROUGH A CENTRAL ANGLE OF 5°32 '43" AN ARC LENGTH OF 89. 305 FEET TO A POINT OF TANGENCY THEREON; THENCE CONTINUING ALONG AID NORTHEASTERLY MARGIN SOUTH 65413 '51" EAST 778.46 FEET TO T E SOUTHWESTERLY LINE OF SAID .TRACT A, WASHINGTON TECHNICAL C ER; THENCE NORTHWESTERLY ALONG SAID SOUTHWESTERLY LINE AND ON CURVE TO THE RIGHT HAVING A RADIUS OF 422.96 FEET, A DISTANCE'OF 1.10.02 FEET TO BEGINNING. T GETHER WITH TRACT A OF THE PLAT ;OF WASHINGTON TECHNICAL. CENTER, AS PER PLAT RECORDED IN VOLUME 22 OF PLATS, PAGES 98 THROUGH 102, RECORDS OF KING COUNTY. EXCEPT THAT PORTION DESCRIBED AS OLLOWS: BEGINNING AT THE MOST WESTERLY C RNER OF TRACT A, PLAT OF WASH- INGTON TECHNICAL CENTER AS RECORDED IN VOLUME 122 OF PLATS, PAGES 98 TO 102, RECORDS OF RING CO UN Y, WASHINGTON, SAID WESTERLY CORNER BEING AT THE INTERSECTIO OF THE SOUTHWESTERLY LINE OF SAID "TRACT A" WITH A LINE DESIGN TED "PERMANENT EASEMENT BOUND- ARY" ON U.S. DEPARTMENT OF AGRICULTURE, SOIL CONSERVATION SERVICE MAP, SHEET 1 OF 3, ENTITLE "LAND !RIGHTS WORK MAP, P-1 CHANNEL, , - JA ' i, - .. • RUSH, ROED& HITCHINGS, INC. EAST SIDE GREEN RIVER WPP, CITY RENTON, KING COUNTY, WASHXtG— TON;" THENCE ALONG SAID LINE AND N A CURVE, THE RADIUS POINT OF WHICH BEARS NORTH 5°24'02" EAST 1 5.04 FEET A DISTANCE OF 112.06 FEET TO A POINT OF REVERSE CURVE, THE RADIUS POINT OF WHICH BEARS SOUTH 44°18'11" WEST 172.96 FEET; THENCE ALONG SAID REVERSE CURVE AND SAID LINE 133.74 FEET; THEN E WEST ALONG SAID LINE 367.02 • FEET TO A LINE WHICH BEARS NORTH FROM A POINT ON THE SOUTH LINE OF SAID SECTION 13 WHICH IS 1,274..76 FEET EAST OF THE SOUTHWEST CORNER THEREOF; THENCE SOUTH 131.36 FEET TO THE NORTHEASTERLY LINE OF OAKESDALE AVENUE; THENCE OUTH 70°46'34m EAST ALONG SAID NORTHEASTERLY LINE 13.95 FEET TO BEGINNING OF A TANGENT CURVE • TO THE RIGHT, ALONG SAID NORTHEA TERLY LINE, HAVING A RADIUS OF 922.73 FEET; THENCE ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 5°42'43" AN ARC LENGTH OF 89.30k FEET TO 'A POINT OF TANGENCY THEREON; THENCE CONTINUING.ALONG D NORTHEASTERLY M$RGIN SOUTH 65°13'51" EAST 286.795 FEET TO E BEGINNING OF A NON—TANGENT CURVE TO THE LEFT HAVING A RA IUS POINT WHICH BEARS NORTH 5°30'13" WEST A DISTANCE OF 55. 0 FEET; THENCE NORTHWESTERLY ALONG SAID CURVE THROUGH A CENT AL ANGLE OF 59°43'39" AN ARC LENGTH OF 57.33 FEET TO A POI T OF TANGENCY; THENCE NORTH 24°46.09" EAST 15.70 FEET; THEN E NORTH 89°30'04" EAST 214.53 FEET TO THE BEGINNING OF A TANGENT CURVE TO THE LEFT HAVING A RADIUS OF 1003.00 FEET; THENCE EASTERLY ALONG SAID CURVE THROUGH A CENTRAL, ANGLE OF 13450'35" AN AEC LENGTH OF 242.33 FEET; THENCE NORTH 29.28'39" WEST 207.28 FEE; TO THE NORTHWESTERLY LINE OF SAID "TRACT A" OF THE PLAT OF WASIINGTON TECHNICAL CENTER; THENCE SOUTH 60°31'21" WEST ALONG SAID N RTHW ESTE, RL,Y LINE 86.76 FEET TO • THE BEGINNING OF A TANGENT CURVE ''4T-�O�- THE RIGHT THEREON, HAVING A RADIUS OF 165.04 FEET; THENCE SOUTHWESTERLY AND WESTERLY ALONG SAID CURVE THROUGH A CENTRAL ANGLE OF 34°52'41" AN ARC LENGTH OF 100.47 FEET TO THE POINT OF BEGINNING. THE ABOVE DESCRIBED PARCEL CONTAINS 363, 135 SQUARE FEET OR 8.3364 Arius. ' : 4 fr co '111 • ST CITY WASHINGTON, INC. g -.r...: 4 j TEVEN A. HITCH/NGS, P.L.S. ,_ F'' '-:; 'NOVEMBER 6, 1991 • �� OB NO. 91400/SUR 53—B 4 ' Ll3� ' 2/ APPENDIX B BUSh..cOED HfTCHIN GS.lac. 'ID INDEIITY AGREEMENT ti That Portion of Tract D, Washington Technical Center, as recorded in Volume 122 of Plats, Pages 98 through 102, records of King County, Washington, lying Northerly of Southwest 7th Street as deeded to the City of Renton by deed filed under Recorder's No. 8702100643, and Westerly of Nachos Avenue Southwest as deeded to the City of Renton by deed filed under Recorder's No. 8702100644, records of said County. First City BRH Job Nos. 86230 4 86083 April 28, 1987 ALH/Surv. 17, 86230 �l ��l-f o� uRl.Hlt b E � y,,r�, ti ; if' Ifs ,I• O c4 01 '/37Eai' � .14 IANO I I ' it I' � I I - io November 20, 1991 EXHIBIT 0 REAL ESTATE PURCHASE AND SALE AGREEMENT FOR A PORTION OF TRACT C THIS REAL ESTATE PURCHASE AND SALE AGREEMENT (the "Purchase Agreement") is between FIRST CITY WASHINGTON, INC. , a Washington corporation ("Seller") and the CITY OF RENTON, a municipal corporation ("Purchaser") , and is made for the purpose of purchase and sale of the following described real property. In consideration of the covenants and agreements hereinafter made, the parties agree as follows: 1. Relationship to Memorandum Agreement. The purchase and sale described herein is an element of that certain Memorandum of Agreement Regarding Blackriver Corporate Park Tracts A, B and C dated November 20, 1991 (the "Memorandum Agreement") between the parties hereto (the "Parties") and other parties. It is the intent of the Parties that this Purchase Agreement shall implement in part the terms of the Memorandum Agreement. In the event of any inconsistency between the terms and provisions of this Purchase Agreement and the Memorandum Agreement, the terms and provisions of the Memorandum Agreement shall govern. This Purchase Agreement shall become effective upon the date p of execution of this Purchase Agreement and the Memorandum Agreement by all the parties thereto. In no event shall this Purchase Agreement become effective absent acceptance and execution of the Memorandum Agreement by all parties thereto. - 1 - November 20, 1991 2. Description of Property. Purchaser agrees to purchase from Seller, and Seller agrees to sell unto Purchaser, the real property commonly known as Lots 5, 7, 8, 9, 10 and a portion of Lot 6 of Tract C of Blackriver Corporate Park, in King County, Washington, and referred to in this Purchase Agreement as the "City Tract C Property," which property is depicted in Attachment A and legally described in Attachment B, both of which are attached hereto and incorporated herein. Purchaser hereby authorizes the insertion over its signature of the correct legal description of the above designated property if unavailable at the time of signing, or to correct the legal description p previously entered if erroneous or incomplete. 3. Purchase Price. The purchase price is Two Million Five Hundred One Thousand Two Hundred Twenty-eight and No/100 Dollars ($2,501,228.00) , payable in cash at closing. 3.1 As additional consideration for the sale, Purchaser shall at closing: (a) Pay directly or reimburse Seller for the costs of surveying the boundary of a portion of Lot 6 of the City Tract C Property, and preparing the legal descriptions therefor. (b) Provide evidence reasonably satisfactory to Seller of a completed lot boundary adjustment between a portion of Lot 6 of City Tract C Property and the remaining portion of Lot 6 of Tract C not being purchased hereunder. - 2 - November 20, 1991 3.2 As further consideration for the sale, Purchaser shall within a period of ten years from the date of execution of this Agreement: (a) Grant Seller the opportunity for mitigation credits to mitigate for impacts to wetlands, wildlife habitat, open space and other sensitive areas which impacts may be occasioned by the development of the portion of Tract C remaining in Seller's ownership or, with Purchaser's approval, which approval shall not unreasonably be withheld, impacts of other development located in a three mile radius of the City Tract C property ("Mitigation Credits") , and those rights of entry or easements that are necessary for Seller to utilize such Mitigation Credits on the portion of the City Tract C property purchased with funds obtained by the City from the King County Open Space Program ("City Tract. 0 - Open Space Area") . (b) Grant Seller Mitigation Credits and those rights of entry or easements that are necessary for Seller to utilize such Mitigation Credits on the portion of Tract C purchased with funds obtained by the City from the Municipality of Metropolitan Seattle ("City Tract C - Metro Area") , to the extent such opportunity for Mitigation Credits remains after Metro has used its rights to mitigate or disclose plans to utilize its rights to mitigate under that certain Agreement between Metro and Purchaser dated July 1991. - 3 - November 20, 1991 (c) Agree to in good faith consider and promptly respond to any reasonable proposals by Seller for the granting of 1 easements as necessary for utilities, landscaping, access and other requirements on the City Tract C Property, and for credit for the City Tract C Property regarding satisfaction of setback, 1 yard, landscape and other zoning code requirements on the portion of Tract C remaining after Purchaser's purchase of the City Tract C Property, in recognition p y, that the remainder is a small, unusually shaped area with environmental sensitivities which may make a standard development difficult. Purchaser's obligation to grant Mitigation Credits, easements and zoning code waivers as more particularly set forth in this Section 3.2 shall survive closing. 4. Title. Title to the City Tract C Property shall be free of encumbrances or defects except the right to Mitigation Credits and easements as specified above and those exceptions approved by Purchaser as provided below. Seller agrees to furnish to Purchaser a Standard Coverage Owner's Policy of Title I � Insurance, such policy to be effective on the date of closing and such policy to be issued by Transamerica Title Insurance Company. As soon as reasonably possible following the opening of escrow, but not later than ten (10) days following the last Party's execution of this Agreement, Seller shall furnish to Purchaser a Preliminary Commitment (the "Commitment") on the City Tract C Property, together with copies of any exceptions set forth in the - 4 - November 20, 1991 Commitment. Purchaser shall have ten (10) days from receipt of the Commitment within which to notify Seller in writing of Purchaser's disapproval of any exception shown in the Commitment; provided, however, that rights reserved in Federal Patents or State Deeds, building or use restrictions general to the district, existing easements not inconsistent with the intended use of the restricted parcels, and building or zoning regulations or provisions shall not be deemed exceptions. Seller shall have thirty (30) days from the date of receipt of Purchaser's objections to determine whether or not to cure such exceptions. If Seller declines or is unable to cure any of the exceptions objected to from the Policy of Title Insurance to be issued, Purchaser may either (i) elect to declare this Purchase Agreement void, or (ii) consummate the transaction in the same manner as if there had been no title objections. In the event Purchaser does not provide written notice of objections within the time period provided, Purchaser will be deemed to have accepted the condition of title as set forth in the Commitment. In the event Seller does not provide written notice to Purchaser that Seller declines or is unable to cure any of Purchaser's objections within the time period provided, Seller will be deemed to have agreed to cure such objections. Seller shall have until closing to cure any objections which it has agreed to cure. Seller and Purchaser shall split any cancellation fee for the Commitment, such fee not to exceed One Hundred Dollars ($100.00) . - 5 - I - November 20, 1991 5. Conveyance. Transfer of Seller's interest in the City Tract C Property shall be by Statutory Warranty Deed, subject to I it the encumbrances more particularly described in paragraph 4 above, and also subject to the indemnification and release more particularly set forth in paragraph 11 below. 6. prorations. Taxes for the current year shall be prorated as of the date of closing. 7. Condition to Closing. The obligations of the Seller under this Purchase Agreement are conditioned upon Seller's receipt of a site plan approval and shoreline permit for the remaining portion of Tract A and Tract B, on terms and conditions reasonably acceptable to Seller, in conformance with the Mitigation Conditions and other provisions of the Memorandum Agreement. This condition may be waived by Seller in its sole discretion and any such waiver shall be in writing. 8. Closing. This purchase shall be closed in the Seattle office of Transamerica Title Insurance Company (the "Closing Agent") , within 30 days after satisfaction or waiver of the condition specified in Section 7 above, but in any event not later than two years from date of this Purchase Agreement, which I' - I shall be the termination date. The Parties will deposit in escrow with the Closing Agent all instruments and moneys necessary to complete this purchase in accordance with this Purchase Agreement. The premium for the standard coverage Owners' Policy of Title Insurance shall be paid by Seller. The - 6 - November 20, 1991 escrow fee shall be paid one-half (1/2) each by the Parties. Purchaser shall pay recording fees and all other costs and expenses normally borne by Purchaser. As this sale is to a municipal corporation, no real estate excise tax shall be assessed. 9. Possession. Seller shall deliver possession of the City Tract C Property to Purchaser on date of closing. 10. Condition of Property. The Purchaser has inspected the City Tract C Property and agrees to accept the City Tract C Property "As Is" in its present condition. Purchaser agrees and acknowledges that Seller makes no representations or warranties with respect to the physical condition of the City Tract C Property, and that the City Tract C Property is subject to the indemnity and release set forth below. 11. Indemnity and Release. Purchaser agrees to release Seller from and to indemnify, defend and hold Seller harmless from and against any and all claims, causes of action, demands, losses, liabilities, costs, damages and expenses (including, without limitation, attorneys' and consultants' fees, but without waiver of the duty to hold harmless) arising from or out of the entry of Purchaser, including the past entry of the Purchaser, its employees, contractors or agents onto the City Tract C Property or the placing of dredge spoils, excavated soils and fill material thereon, by Purchaser, its employees, contractors or agents (such entry and activities hereinafter "Purchaser's - 7 - it I November 20, 1991 it Filling") including but not limited to costs of investigation and remediation of soils or groundwater contamination caused by Purchaser's filling, negotiating with agencies, and defense of lawsuits, occasioned by Purchaser's Filling, brought by agencies or third parties, and payment of fines and penalties occasioned �I by Purchaser's Filling and will pay all Seller's costs and expenses, including attorneys' fees, incurred in enforcing this duty to release, indemnify, defend and hold harmless. The indemnity set forth in this paragraph shall survive closing. 12. Default. If either Party defaults in its contractual performance herein, the non-defaulting Party may seek specific performance (or mandamus) pursuant to the terms of this Agreement, damages, rescission or injunction. Purchaser is purchasing the City Tract C Property in its proprietary capacity not its governmental capacity and therefor sovereign immunity does not apply to the enforcement of this Purchase Agreement or the Memorandum Agreement. The non-defaulting Party shall be entitled to recover its costs and attorney's fees in the event counsel is retained as a result of such default. A default under the terms of this Purchase Agreement shall be deemed a default under the terms of the Memorandum Agreement, and in such event II the non-defaulting Party shall be entitled to all remedies provided by the Memorandum Agreement in addition to the remedies provided hereunder. - 8 - November 20, 1991 13. Miscellaneous. There are no verbal or other agreements which modify or affect this Purchase Agreement, other than the Memorandum Agreement. Time is of the essence of this Purchase Agreement. Purchaser has not consulted with, nor discovered the City Tract C Property through the use of a realtor or other agent and there are no finders fees or commissions due upon this transaction. Facsimile transmission of any signed original document, and retransmission of any signed facsimile transmission, shall be the same as transmission of an original. At the request of either Party, or the Closing Agent, the Parties will confirm facsimile transmitted signatures by signing an original document. Notices given under this Purchase Agreement shall be in writing and shall be delivered personally with written receipt therefor sent via facsimile transmission or sent by certified mail, return receipt requested, to the following addresses: Seller: Dean Erickson First City Washington, Inc. 700 Fifth Avenue, Suite 6000 Seattle, WA 98104 With copy to: Amy L. Kosterlitz Buck & Gordon 1011 Western Avenue, Suite 902 Seattle, WA 98104 Purchaser: Mayor, City of Renton 200 Mill Avenue South Renton, WA 98055 - 9 - I i November 20, 1991 With copy to: Lawrence Warren City Attorney 100 South Second Street Post Office Box 626 Renton, WA 98057 14. Residency of Seller. Seller warrants to Escrow Agent that if Seller is an individual, Seller is not a non-resident it li alien for purposes of U.S. income taxation or if Seller is a I' corporation, partnership, trust, or estate, Seller is not a foreign corporation, foreign partnership, foreign trust or II foreign estate. 15. Assignment. This Purchase Agreement is not assignable by Purchaser or Seller without the express written consent of the other Party to this Agreement, which consent will not be unreasonably withheld. 16. Governing Law. This Purchase Agreement shall be construed and interpreted under and shall be governed and !' enforced in all respects according to the laws of the State of Washington. 17. Oral Agreements and Representations. There are no oral . or other agreements, including but not limited to any representations or warranties, which modify or affect this Purchase Agreement. Seller shall not be bound by, nor liable for, any warranties or other representations made by any other person, partnership, corporation or other entity unless such representations are set forth in a written instrument duly executed by Seller. - 10 - y November 20, 1991 18. Enforcement. Either Party's failure to insist upon or enforce strict performance by the other Party of any provision of this Purchase Agreement or to exercise any right under this Purchase Agreement shall not be construed as a waiver or relinquishment to any extent of such Party's right to assert or rely upon any such provision in any other instance, which provision shall remain in full force and effect. 19. Binding Nature. All rights and obligations arising out of this Purchase Agreement shall inure to the benefit of and be binding upon the respective successors, heirs, assigns, tenants, administrators, executors, and marital communities, if any, of the Parties to this Purchase Agreement. This Purchase Agreement shall not bind either Party unless it has been properly authorized, executed and delivered by Purchaser and Seller. 20. Captions. The captions and section headings of this Purchase Agreement are inserted for convenience only and shall not be deemed to limit or expand the meaning of any section. 21. Invalidity. If any provision of this Purchase Agreement shall be held invalid, void, or illegal, it shall in no way effect, impair or invalidate any of the other provisions of this Purchase Agreement. 22. Warranty and Representation of Authority. Seller and Purchaser each represent to the other that the person or persons signing this Purchase Agreement have authority to execute the same and to bind the Parties to this Purchase Agreement; and that - 11 - November 20, 1991 it has obtained all consents, permissions, and approvals related to entry into this Purchase Agreement, its obligations under this ' Purchase Agreement or under any covenant, agreement, encumbrance,law, or regulation applicable to the Parties to this Purchase Agreement. 23. Counterparts. This Purchase Agreement may be executed in counterparts, which shall include signatures forwarded by telecopy which shall be treated as originals for all purposes. All executed counterparts shall constitute one agreement, binding on all of the Parties, notwithstanding that all the Parties have not signed the original or the same counterpart. Any such counterpart shall be admissible into evidence as an original against the person who executed that counterpart. SELLER: PURCHASER: r FIRST CITY WASHINGTON, INC. , THE CITY OF RENTON, a a Washin ton corporation munibIpa co oration By: /A. By: l \A, _A. P.►,� ►v ' 4Ei-c 13EiLA�, . , Earl Clymer \ I ' 'r'`u',s .F:ri ti Mayor By: # / ,. Dated: `y.,cv,` `'}_\ DEAN R. ERICKSON Its: APPROVED AS TO FORM: � ( , VICE PRtSiDtN i Dated: ,4 i /44/ et,LA)-1,,,OVV;)(?/t4Z4,3 ,(City Attorney ATTEST: ity Cle �! - 12 - November 20, 1991 ATTACHMENTS A - Graphic depiction of City Tract C B - Legal description of City Tract C FC17S0144O11081.ALK I I ' I - - 13 - i City Tract C Property .f.t•i•'.1, . A c4 ..... ... . 4,..,:5 r4.:I,.14Kil'I g 14/lir y `••r,' YID ,�1_ )� � �lit�;„ ,� FvL� ;.,.+('! /: • { : ,: ¢{.iA .a.?. sir.. •' y 11.‹'41:01.:0••••i. ..•ie ;.•o-:'3 . 1.1 w' " .•*'• .. .4 y .;lu. ..•.•, f , mot+ }. 14 k-k . ��. L i,i•• '',''••••• '•;t;E.'�1 1 24z4-ur.li- ' •',,c. 3 Ili • i ry•. 7� �'A'..:'•7t4.::'..•:'tr,. %!• t.�;.: .s'.1:;�/ // �' • r.r�• •i�...•r•=:i:•'!t!'i•l",i' r:.rt;1:�•��i,:• • 'v(" f,�i�/ i(.•`r ww ,_.� O ,.7''` ,•• ::▪ ^w {r.� I, t1 �r•rt., ♦,Ir.fir '•, .rJ��?:./• ..��r �I� %? � A I •, CTi a '�1 K.vv � •,377�$ •y_!' .S• q.`,,., /1 frr//f r/rt'. r• , // h /r/ - ' ' - x X ,' '' ,.�j}? :4:::f 1:41.4 i�,56 rl.� , %'•1•(.•y I./f,•%H/,(r/���r9�� %l•,:-4, fir//,// • ///!`��r • :r^i ...• .•: ..?.42:).:4;V r,Z:-.14 140'. '..'k t,'F'/;*;: ' ;tg4k y% %l;/W/� /rf :"/1/� .:V "y3 c� '-' 3 r r .ty ir. ell tri 4t../4.r4} i..-4},..•./,;....•..:,,.!:`i./�RRRR''"' ,y •71,4,•ri,..,,6,0'.-' r C4>r:;r�lvtrl�r//rrrrr , �/ ' ,•'<.{{ i;•' .•.4 �.r/�Cr[. rr.�rr '.r;:.•r r,.S• r. r,//:%�%if i L .• {•r..:..Lr::{r:i....Y.•{;r.. �p r.r., ::. •Y /ii!/r ' H z ::•i:hY::. •.h j::.*;;irYr •�7 0 0 > Rt m H H TRACT C FNA : BLACKR1VERLii CORPORATE PARK..•. . MIti wL w.r7•. :�f."'r,,.': elm Mt Nthwyrt tw, • ..'". ; pHAst vn 11.8-91 1 Airfw.44 0.31 13 Tp Eic .nnr O L� � DG3�Gc PZLo,J — C irk C PP-Dater{ � I i November 20, 1991 EXHIBIT P OPTION AGREEMENT THIS OPTION AGREEMENT (the "Option Agreement") is made this day of November, 1991 by and between FIRST CITY WASHINGTON, INC. , a Washington corporation ("Optionor") and the CITY OF RENTON, a municipal corporation ("Optionee") . In consideration of the covenants and agreements hereinafter made, the parties agree as follows: 1. Relationship to Memorandum Agreement. This Option Agreement is an element of that certain Memorandum of Agreement Regarding Blackriver Corporate Park Tracts A, B and C dated November 20, 1991 (the "Memorandum Agreement") between the parties hereto (the "Parties") and other parties. It is the intent of the Parties that this Option Agreement shall implement in part the terms of the Memorandum Agreement. In the event of any inconsistency between the terms and provisions of this Option Agreement and the Memorandum Agreement, the terms and provisions of the Memorandum Agreement shall govern. This Option Agreement shall become effective upon the date of execution of this Option Agreement, the Purchase Agreement for a Portion of Tract C ("City Tract C Property") between the Optionor and Optionee, and the Memorandum Agreement by all the parties thereto. In no event shall this Option Agreement become effective absent acceptance, execution, and closing of the Purchase Agreement for the City Tract C Property, unless First City shall otherwise determine in - 1 - November 20, 1991 its sole discretion, and execution of the Memorandum Agreement by all parties thereto. 2. Description of Property. Optionor hereby grants to Optionee, subject to the terms and conditions set forth in this Option Agreement, an exclusive option ("the Option") to purchase Lot 3, Lot 4 and a portion of Lot 6 (the portion remaining after the Optionee's purchase of the City Tract C Property) of the lu property commonly known as Tract C of Blackriver Corporate Park, it in King County, Washington, and referred to in this Option Agreement as the "Tract C Option Property, " which property is depicted in Attachment A and legally described in Attachment B, both attached hereto and incorporated herein. Purchaser hereby authorizes the insertion over its signature of the correct legal description of the above-designated property if unavailable at the time of signing or to correct the legal description previously entered if erroneous or incomplete. 3. Terms and Conditions. Optionee may purchase all or a portion of the Tract C Option Property, subject to the following conditions: 3.1 Option Period. The period within which the Option may be exercised (the "Option Period") shall run for two years from the date of mutual execution of this Option Agreement. 3.2 Exercise of Option. In the event Optionee elects to exercise the Option, Optionee shall, within the term of the Option Period, exercise this Option by sending written notice of - 2 - 1 November 20, 1991 its intention to Optionor. Concurrent with the notice to Optionor, Optionee shall send notice of exercise of the Option to the escrow agent at Transamerica Title Insurance Company ("Escrow Agent") , in Seattle, Washington. 3.3 Purchase of a Portion. In the event Optionee elects to purchase only a portion of the Tract C Option Property, Optionor's notice under Section 3.2 above shall contain a description of the portion of the Tract C Option Property it desires to purchase; provided, however, that such portion purchased shall consist of first, the remaining portion of Lot 6, next, Lot 4 (or a portion thereof) , and last, Lot 3 (or a portion thereof) . 3.4 Optionor Right of Approval. If Optionee elects to purchase only a portion of the Tract C Option Property, Optionor shall have the right to approve or disapprove Optionee's proposed purchase based upon Optionor's determination in its sole discretion as to whether the proposed purchase leaves Optionor with sufficient property to utilize in a viable development. Such approval or disapproval will be given by Optionor in writing within sixty (60) days of receipt of Optionee's written proposal, unless delayed by Optionee's response under Section 3.5 below. 3.5 Optionee Consideration of Easements and Zoning Waivers. To assist Optionor in a determination of whether sufficient property remains for a viable development, Optionee will in good faith consider and promptly respond to any reasonable proposal by - 3 - November 20, 1991 Optionor for the granting of easements as necessary for utilities, landscaping, access and other requirements on the portion of the Tract C Option Property P p y purchased by Optionee and for credit for the portion of the Tract C Option Property purchased by Optionee regarding satisfaction of setback, yard, landscape or other zoning code requirements on the property remaining after the Optionee's purchase based upon the hardship created by Optionee's proposed purchase of only a portion of the Tract C Option Property. 3.6 Optionor's Pursuit of Development Approvals. During the Option Period, Optionor may take actions and incur costs in pursuing development of the Tract C Option Property. 4. Purchase Price. The purchase price is as follows: 4.1 The purchase price for the Tract C Option Property shall be $6.00 per square foot if the Option is exercised during the first year of the Option Period. II 4.2 The purchase price for the Tract C Option Property shall be $6.60 per square foot if the option is exercised in the second year of the Option Period. 4.3 As additional consideration for the sale, Optionee shall at closing: (a) Reimburse Optionor for its reasonable costs and expenses, if any, for pursuing development of the Tract C Option Property during the second year of the Option Period, including but not limited to architectural and engineering fees, consultant - 4 - I' November 20, 1991 fees, permit and application fees and reasonable attorneys fees. Such costs shall not include carrying costs of the Tract C Option Property such as general real property taxes, interest on loans and other financing charges. (b) If Optionee purchases only a portion of the Tract C Option Property, pay directly or reimburse Optionor for the costs of surveying the boundary of the portion purchased, and preparing the legal descriptions therefor including any easements; and (c) If Optionee purchases only a portion of the Tract C Option Property, provide evidence reasonably satisfactory to Optionor of a completed lot boundary adjustment between the portion of the Tract C Option Property purchased and the remaining portion of Tract C Option Property not being purchased hereunder. 4.4 If Optionee purchases only a portion of the Tract C Option Property, as further consideration for the Option, Optionee shall within a period of ten years from the date of Optionee's exercise of its Option: (a) Grant Optionor the opportunity for mitigation credits to mitigate for impacts to wetlands, wildlife habitat, open space and other sensitive areas which may be occasioned by the development of the portion of the Tract C Option Property remaining after Optionee's purchase ("Mitigation Credits") and those rights of entry and easements that are necessary for - 5 - h , November 20, 1991 Optionor to utilize such Mitigation Credits, on the portion of the Tract C Option Property purchased hereunder. (b) Grant Optionor easements as necessary for utilities, landscaping, access and other requirements, and grant credit regarding zoning code requirements, such as yard, setback and landscape requirements that were determined allowable by Optionee pursuant to Section 3.5 above. (c) If the Optionee proposes to purchase property II under this Option Agreement with monies granted to Optionee conditioned on the opportunity for wetlands credit, those mitigation credits shall be considered to take priority over the mitigation rights of Optionor set forth above Optionee's obligations to grant Mitigation Credits, easements and zoning code waivers set forth herein shall survive closing. 5. Failure to Exercise. 5.1 If Optionee fails to timely exercise this Option as required under Section 3, or if Optionee terminates this Option at any time by written notice, this Option shall automatically terminate and be of no further force and effect. 5.2 Concurrent with execution of this Option Agreement, I ' Optionee shall deliver to the Escrow Agent an executed and acknowledged Notice of Termination of Option in the form attached to this Option Agreement as Attachment C. Should the Option expire or be otherwise terminated, upon demand by Optionor, - 6 - P November 20, 1991 Escrow Agent shall record the Notice of Termination of Option with the King County Recorder to clear title to the Tract C Option Property. Escrow Agent shall have no liability to any Party for recording the Notice of Termination of Option upon Optionor's instructions. 6. Establishment of Closing Escrow. Immediately following mutual execution of this Option Agreement, the Parties will establish a closing escrow with Escrow Agent. Should Optionee elect to exercise the Option and Optionor accepts Optionee's proposed purchase, then within ninety (90) days from the date of acceptance, at a time and date mutually agreed to by the Parties (the "Closing Date") , Optionee shall pay the consideration specified in Section 4, which shall include the Purchase Price and reimbursement for development costs. On the Closing Date, Optionor shall deliver to the Escrow Agent a Statutory Warranty Deed, together with all other documents necessary to convey title to Optionee, and an affidavit certifying that Optionor is not a foreign corporation. 7. Title. Title to the Tract C Option Property shall be free of encumbrances or defects except the agreements for mitigation credits set forth above, a Memorandum of the Memorandum Agreement and other encumbrances, restrictions and reservations of record approved by Optionee as provided below. Optionor agrees to furnish to Optionee a standard coverage Owner's Policy of Title Insurance, such policy to be effective on - 7 November 20, 1991 the date of closing and such policy to be issued by Transamerica Title Insurance Company. As soon as reasonably possible following the opening of escrow, but not later than ten (10) days following the Optionor's approval of Optionee's exercise of the option, Optionor shall furnish to Optionee a Preliminary Commitment (the "Commitment") on the Tract C Option Property, together with copies of any exceptions set forth in the Commitment. Optionee shall have ten (10) days from receipt of the Commitment within which to notify Optionor in writing of Optionee's objection to any exception shown in the Commitment; provided, however, that rights reserved in Federal Patents or State Deeds, building or use restrictions general to the district, existing easements not inconsistent with the intended use of the restricted parcels, and building or zoning regulations or provisions shall not be deemed exceptions. Optionor shall have thirty (30) days from the date of receipt of Optionee's objections to determine whether or not to cure such objections. If Optionor declines to cure any of the exceptions objected to, Optionee may either (i) elect to declare this Option Agreement void, or (ii) consummate the transaction in the same manner as if there had been no title objections. In the event Optionee does not provide written notice of objections within the time period provided, Optionee will be deemed to have accepted the condition I' of title as set forth in the Commitment. In the event Optionor does not provide written notice to Optionee that Optionor - 8 - i November 20, 1991 declines or is unable to cure any of Optionee's objections within the time period provided, Optionor will be deemed to have agreed to cure such objections. Optionor shall have until closing to cure any objections which it has agreed to cure. Optionor and Optionee shall split any cancellation fee for the Commitment. 8. Condition of Property. Optionee has inspected the Tract C Option Property and agrees to accept the Tract C Option Property in its present condition, "As Is." Optionee agrees and acknowledges that Optionor makes no representations or warranties with respect to the physical condition of the Tract C Option Property, or with respect to the presence of any environmentally hazardous substances on or under the Tract C Option Property. 9. Prorations. Taxes for the current year shall be prorated as of the date of closing. 10. Closing. This purchase shall be closed in the Seattle office of Transamerica Title Insurance Company (the "Closing Agent") . The Parties shall deposit in escrow with the Closing Agent all instruments and moneys necessary to complete this purchase in accordance with this Option Agreement. The premium for the standard coverage Owner's Policy of Title Insurance shall be paid by Optionor. The escrow fee shall be paid one-half (1/2) each by the Parties. Optionee shall pay recording fees and all costs and expenses normally borne by Purchaser. As this sale hereunder is to a municipal corporation, no real estate excise tax shall be assessed. - 9 - November 20, 1991 11. Possession. Optionor shall deliver possession of the Tract C Option Property or portion thereof which has been agreed by the Parties pursuant to this Option to Optionee on date of closing. 12. Default,. If either Party defaults in its contractual performance herein, the non-defaulting party may seek specific performance (or mandamus) pursuant to the terms of this Option Agreement, damages, rescission or injunction. Optionee is entering into this Option Agreement in its proprietary capacity and not its governmental capacity and therefore sovereign immunity does not apply to the enforcement of this Option Agreement or the Memorandum Agreement. The non-defaulting Party shall be entitled to recover its costs and attorneys' fees in the event counsel is retained as a result of such default. A default under the terms of this Option Agreement shall be deemed a default under the terms of the Memorandum Agreement, and in such event the non-defaulting Party shall be entitled to all remedies provided by the Memorandum Agreement in addition to the remedies provided hereunder. 13. Notices. All notices required or permitted under this Option Agreement shall be in writing and shall be delivered personally with written receipt therefor, sent via facsimile transmission or sent by certified mail, return receipt requested, to the following: - 10 - November 20, 1991 Optionor: Dean Erickson First City Washington, Inc. 700 Fifth Avenue, Suite 6000 Seattle, WA 98104 With copy to: Amy L. Kosterlitz Buck & Gordon 1011 Western Avenue, Suite 902 Seattle, WA 98104 Optionee: Mayor, City of Renton 200 Mill Avenue South Renton, WA 98055 With copy to: Lawrence Warren City Attorney 100 South Second Street Post Office Box 626 Renton, WA 98057 14. Miscellaneous. There are no verbal or other agreements which modify or affect this Option Agreement, other than the Memorandum Agreement and Purchase Agreement for the City Tract C Property. Time is of the essence of this Option Agreement. Optionee has not consulted with, nor discovered the Tract C Option Property through the use of a realtor or other agent and there are no finders fees or commissions due upon closing this transaction. Facsimile transmission of any signed original document, and retransmission of any signed facsimile transmission, shall be the same as transmission of an original. At the request of either party, of the Escrow Agent, the Parties will confirm facsimile transmitted signatures by signing an original document. 15. Assignment. This Option Agreement is not assignable by Optionee or Optionor without the express written consent of the - 11 November 20, 1991 other Party to this Option Agreement, which shall not be unreasonably withheld. 16. Governing Law. This Option Agreement shall be construed and interpreted under and shall be governed and enforced in all respects according to the laws of the State of Washington. 17. Oral Agreements and Representations. There are no oral or other agreements, including but not limited to any � . representations or warranties, which modify or affect this Option Agreement. Optionor shall not be bound by, nor liable for, any warranties or other representations made by any other person, partnership, corporation or other entity unless such representations are set forth in a written instrument duly executed by Optionor. 18. Enforcement. Either Party's failure to insist upon or enforce strict performance by the other party of any provision of this Option Agreement or to exercise any right under this Option Agreement shall not be construed as a waiver or relinquishment to any extent of such party's right to assert or rely upon any such provision in any other instance, which provision shall remain in full force an effect. 19. Binding Nature. All rights and obligations arising out of this Option Agreement shall inure to the benefit of and be binding upon the respective successors, heirs, assigns, tenants, administrators, executors, and marital communities, if. any of the - 12 - I, November 20, 1991 parties to this Option Agreement. This Option Agreement shall not bind either Party unless it has been properly authorized, executed and delivered by Optionee and Optionor. 20. Captions. The captions and section headings of this Option Agreement are inserted for convenience only and shall not be deemed to limit or expand the meaning of any section. 21. Invalidity. If any provision of this Option Agreement d'y shall be held invalid, void, or illegal, it shall in no way effect, impair or invalidate any of the other provisions of this Option Agreement. 22. Warranty and Representation of Authority. Optionor and Optionee each represent to the other that the person or persons signing this Option Agreement have authority to execute the same and to bind the Parties to this Option Agreement; and that it has obtained all consents, permissions, and approvals related to entry into this Option Agreement, its obligations under this Option Agreement or under any covenant, agreement, encumbrance, law, or regulation applicable to the Parties to this Option Agreement. 23. Counterparts. This Option Agreement may be executed in counterparts, which shall include signatures forwarded by telecopy which shall be treated as originals for all purposes. All executed counterparts shall constitute one agreement, binding on all of the parties, notwithstanding that all the parties have not signed the original or the same counterpart. Any such - 13 - 1 November 20, 1991 counterpart shall be admissible into evidence as an original against the person who executed that counterpart. OPTIONOR: . OPTIONEE.• FIRST CITY WASHINGTON, INC. , THE‘C.ITY OF RENTON, a a Washing on corporation municipal corporation i, , By: /, n , y �, C' By: („ " , I.,,s ,rI; 1� EN .13a . Eari'Clyme-r I :________�� i Mayor By: 1 f/ Dated: 1\,. .) , t \\ . \,C1,0\\ Its: DEAN R. ERICKSON APPROVED AS TO FORM: VICE PRESIDENT Dated: 1 -UGs�%� 3/ /qq �' / 44 �c )l. City Attorne ATTEST: 1 ›) City Cl I , - 14 - November 20, 1991 ATTACHMENTS A - Graphic depiction of Tract C Option Property B - Legal description of Tract C Option Property C - Notice of Termination of Option FC17S011AP1120LALX - 15 - TRACT C OPTION PROPERTY s. S ' {'ia f"�'ttf:se': 1%•1 u:f...liz;• 7..4 1 e.i . At!tr:i'''):' -534'!,3• .1:71:1„,:`,(4.3%,7"•,404:.:14:.s. 1111111 ,401 1Z,,,..4 ..%,. 4 .., .. „..,,,. ,.. .. •,• -...,,,,,,..:::„.„.. . ,-,t.r,.,.. •le;..k at .... ..• ,,s. ,.Oa•.....,....4. 1✓• '•i `1 4 ,tii�r,` }cQ�•t�_ 1•. ',(�r'rW,'`�_•.t7 `�Zt9!'�'.* ;,,'' �, x , a •i ��`y '.5; .'ra.l t•�`..f.!:., +.-1;f� }r .r} f S le 1 jLL � �17' ' akint• ,*? ,'•,::;,'',,;,',,•.: `•':r,'''4r`t `,11. , 4 �N'� •. H �.i-.r.'e '�,( ''j ail• 7•r:..r i ' ".,,,'t •.•:.1..;T' ; •r!'j%:,i�.tj••4�• �� n H '�}�:� •'r',� %.1.'tE': wr ,� ;.'+ i::;1,i'�t' `'.r•i °�/y /� r/f!, L ` O H ..��'t t ,r ,• r ,r 5 r if3 l r/rll' �,n / IS w O ,� . ..-,It , ,, ti 1 11j,•� �s'r r4 JJ/�r .:��✓ H s. �.: :{^Yti;:;.:r., ..i,r•• .; ., i, �l';r i i,r..r r•'}., :tjj%j'�f; fl�fff� :::,,;.I.M.,i �.. ': ,;•*;:' f :firr.•,';. {�?..; fl,.•Ifj r. ......4 4 •:r:�� :f ry:i4.•�• - i...-r{rX{:4:.•:',•';?:,.;:rr:h.4;,4 /M:.. -I'ry l;!<:f: {1'i},'f,..::%*,: +••47,-.3::•0 0 ./. r,r'•f4ll�j �rr z to M b.. •• .... ?;•;;:•,'rrr':f:•.:::01$,;rvii:1 r.,J,,ry:: t•V*.4...':ii:'•::.:r:....:.r.r.br,}>fflii4.m.4 r.;..:.:�!fr rife:1%4i:;••...Z.' H z :}:::44.1.$,{Y.•:r,•`.•:.'r::•:•:r;b::b::,r: 4. . :;:?• v,�., r•rf%jf{.%rrr:. 'r.; jir,. I ..,r;;:},. :,};,v,;:l:l r;:':;•::i f {::;::,r,;::., ,:{%'i!r'jr4 j: :i rf: t'-� ww : r:: r: }ij+{; r::Tr::::?::?. r:•jj:•,: �>rri':,r, .,.•?fi�S?i:; •::�:;::•Jf• ro H H r::;;C+.• .7:x01•?.::,}<;::J;::�' ::lf J: f. /am::'i'j••'" ro M x 1-3 ►C TRACT C ' '.; . !& R & Kt S vi. /MI My entiww i eMr. 11.8-91 • �. -�yo�d 1#Q1-ki0 7 -L- _ — C oUd r Q --k1/4047-3 d _L%9 Iry 4L Li ATTACHMENT C TO UNIRIT m XOT*C1 OP TIRMT$kT OM OF OPTION The City of Renton ("Optionee" hereby gives notice that the option granted to it by First City ashington, Inc. (Moptionor") dated November 21, 1991, a memorand of Which was recorded - , 19 , under ing county Recorder's File No. , Eo the real estate described on Appendix A attached hereto, records of Ring ounty, Washington, situated in King County, Washington was not ercised by Optionee and options. neither has nor asserts an interest to said real estate or any claim against the Optionor. In witness whereof, Options h s caused this instrument to be executed this day of , 19 OPTYONEE: 6ity of Renton STATE OF WASHINGTON ) ' ss. COUNTY OF KING ) On this day of , 1991, before ne personally appealed , of the municipal corporation that exac'ited the wi'hin and foregoing instrument, and acknowledged said instrument to be the free and voluntary act and deed of said munibipal corporation, for the uses and purposes therein mentioned, and on oath stated that he was authorized to execute said inst:uaent and that the seal affixed is the official seal of said municipal corporation. , --- 1 In Witness Whereof I have herehnto set ny hand and affixed by official seal the day and year fLrst above written. I Notary Pub Lic in and for the' state of , residing at . My Commis$Lon Empires: - 1 LI FC171014w112l1.AljC I . 200/Z008 6ZS'ON NOI O9 'R )flfl cr:CT Ti/T?/TT FI LIACIc RIVER CCI?IDCI?ATF DARK PHASES VII — VIII CITY CF I?II%TCN MITIGATION DOCUMENT Mzt!' 17, 1131 IP CITY OF RENTON =14. ti Planning/Building/Public Works Department Earl Clymer, Mayor Lynn Guttman,Administrator May 28, 1991 • All Parties of Record and Interested Public SUBJECT: Black River Corporate Park Phases VII and VIII SEPA Mitigation Measures To Whom It May Concern: Attached herein is a copy of the staff report and mitigation measures that were adopted by the Environmental Review Committee at its regular meeting on May 22, 1991. These measures will apply to all proposed development actions identified in the Draft and Final EIS. The measures will apply to the first permit, ostensibly a Special Permit for Fill and Grade, and will continue to be applied with all subsequent permits. This mitigation document is an appealable action. Appeals should be filed with the City of Renton Hearing Examiner by June 17, 1991, 5:00 p.m. If you have any questions about these mitigation measures, the appeal process or about becoming a party of interest for any subsequent development actions identified in the EIS, please contact Donald Erickson, Principal Planner and Secretary to the Environmental Review Committee or Mary Lynne Myer, Project Manager, at 235-2550. Thank you for your interest in this major project. Donald K. Erickson, Secretary • Environmental Review Committee • 200 Mill Avenue South - Renton, Washington 98055 05/28/91(MITDOCA) MITIGATION DOCUMENT BLACK RIVER CORPORATE PARK TRACT A PHASES VII/VIII The Environmental Review Committee for the City of Renton issued a Final Environmental Impact Statement for the Black River Corporate Park, Tracts A and B on March 27, 1991. The EIS for this project has identified a number of possible mitigation measures for impacts that were considered to be significant or potentially significant (as defined by quantitative measures whenever such measures were found to exist). These measures, and others which the responsible official may determine are warranted to protect the environment, are the subject of this mitigation document. A number of chapters of WAC 197-11 speak directly to the imposition of mitigation measures. The relevant chapters are cited below. WAC 197-11-060 Content of Environmental Review states that agencies shall "carefully consider the range of probable impacts, including short-term and long-term effects." Impacts shall include "those that are likely to arise or exist over the lifetime of a proposal" or, in some cases, even longer. WAC 197-11-330 Threshold Determination Process requires the responsible official to take into account the following when determining whether a proposal has significant adverse impacts: 'The same proposal may have significant adverse impact in one location but not in another location;" "the absolute quantitative effects of a proposal are also important and may result in a significant adverse impact regardless of the nature of the existing environment,"and "Several marginal impacts when considered together may result in a significant adverse impact." In reaching such a decision, SEPA states that the responsible official shall not balance whether the beneficial aspects of a proposal outweigh its adverse impacts, but rather shall consider whether a proposal has any probable significant adverse environmental impacts under the rules stated above. WAC 197-11-448 Relationship of EIS to other considerations. (1) SEPA contemplates that the general welfare, social, economic, and other requirements and essential considerations of state policy will be taken into account in weighing and balancing alternatives and in making final decisions.... The EIS provides a basis upon which the responsible agency and officials can make the balancing judgement mandated by SEPA, because it provides information on the environmental costs and impacts. WAC 197-11-768 defines mitigation as: 1) avoiding the impact altogether by not taking a certain action or parts of an action; 2) minimizing impacts by limiting the degree or magnitude of the action and its implementation, by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts; 3) rectifying the impact by repairing, rehabilitating, or restoring the affected environment; 4) reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action; and 5) compensating for the impact by replacing enhancing, or providing substitute resources or environments,and/or monitoring the impact and taking appropriate corrective measures. WAC 197-11-660 further states that decisionmakers may impose mitigation measures designed to mitigate the environmental impacts subject to the following limitations: A) mitigation measures, or denials, shall be based on policies, plans, rules or regulations formally designated by the agency; B) mitigation measures shall be related to specific adverse environmental impacts clearly identified in an environmental document on the proposal and shall be stated in writing by the decisionmaker; C) mitigation measures shall be reasonable and capable of being accomplished; D) responsibility for implementing mitigation measures may be imposed upon an applicant only to the extent attributable to the.identified averse impacts of its proposal. Voluntary additional mitigation measures may occur; E) before requiring mitigation measures, agencies shall consider whether local, state or federal requirements and enforcement would mitigate an identified significant impact; and F) to deny a proposal under SEPA, an agency must find that: 1) the 1 05/28/91(MF1DOC ) proposal would be likely to result in significant adverse environmental impacts Identified in a final or supplemental environmental impact statement prepared under this chapter; and 2) reasonable mitigation measures are insufficient to mitigate the identified impact. In imposing mitigating measures, the Environmental Review Committee considered environmental impacts that are expected from the project itself. In addition, several other independent projects are undergoing environmental review in the same geographical area. These include the Metro Wastewater Treatment Plant Expansion, the Rabanco Recycling Facility, and Phase VI of the Black River Corporate Park. The cumulative impacts of these projects have been considered in the formulation of this mitigation document, and will be considered in the mitigation documents of the other projects under environmental review. SEPA states that: "After its decision each agency shall make available to the public a document that states the decisions. The document shall state the mitigation measures, if any, that will be implemented as part of the decisions, including any monitoring of environmental impacts." (WAC 197-11-660(1)(b)). This document is intended to meet this requirement. As well as analyzing the environmental impacts, the City of Renton, under SEPA, must assess its many objectives and goals and decide how this project furthers or conflicts with them. Some City goals may be internally conflicting. When this occurs, the City,believes that the SEPA process mandates a close environmental analysis to determine priorities. If the priorities are established and the project is able to li mitigate its impacts sufficiently, then the City believes it should proceed. This document presents mitigation measures necessary for the ultimate conservation of the Black River Corporate Park, Phases VII/VIII. THE PROPOSED ACTION The proposed action of First City Development Corp. (FCDC) is the construction of a four-year phased project, including three one to four-story office buildings on 12.07 acres of Tract A, and three four to seven- story buildings on the 15.7 acre Tract B, Renton, Washington. Tract A will also include surface parking to accommodate the buildings on Tract A. Tract B will include the construction of a three-story parking structure and associated surface parking. As a result of the State Environmental Policy Act (SEPA) scoping process, comments were received from governmental agencies and interested citizens regarding the major issues that needed to be analyzed in this EIS. Those issues included the following: topography and soils; foundation; seismic; air quality; surface water movement/quantity;water quality runoff; vegetation; shoreland/wetlands; wildlife resources; unique terrestrial resources; noise; hazardous waste; relationship to existing land uses; relationship to plans, zoning and shorelines; light and glare; historic and cultural resources; traffic; parks and other recreational facilities;and cumulative impact. This EIS also contains an original study on the Great Blue Heron, an urban wildlife resource, based on primary research and empirical evidence gathered from field visits and a compilation of secondary research. This research is entitled "Revised Life History and Effects of Human Disturbance on Great Blue Heron Colonies," Appendix B. A second empirical study is Appendix C, noise monitoring data, July 20, - _ 1990 Geotechnical drilling. A Hazardous Waste Study was also completed on this property and is appended to the EIS by reference. It will be transmitted to the Renton Hearing Examiner and is available for public viewing at the City of Renton Development Planning Division. Finally,the EIS appends, by reference,the following documents: 1974. Auburn Interceptor EIS 1980. U.S. Environmental Protection Agency-Wastewater Management Plan for the Lake Washington/Green River Basins, EIS and Appendices. Report No.910/9-80-077 2 II 05/28/91(MITDOCA) 1981. U.S. Environmental Protection Agency- Final EIS on the Wastewater Management Plan for the Lake Washington/Green River Basins. 1983. Draft,Supplemental EIS for the Puget Sound Facilities Engineering Report. 1983. Final Supplemental EIS on the Puget Sound Facilities Engineering Report. 1983. U.S. Environmental Protection Agency - Municipality of Metropolitan Seattle/Draft and Final EISs, Sludge Management Plan. 1984. Final Supplemental EIS on the Renton Effluent Transfer System Alternative for the Wastewater Management Plan, Lake Washington/Green River Basins. 1984. Public Comments on the Draft Supplemental EIS on the Renton Effluent Transfer System Alternatives for the Wastewater Management Plan, Lake Washington/Green River Basins. 1985. Draft EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. 1985. Final EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. 1986. Final Supplemental EIS for Secondary Facilities and Combined Sewer Overflow Control. 1988. Final Supplemental EIS for West Point Secondary Treatment Facilities. The content of the EIS is determined by the Lead Agency(in this case, the City of Renton) based, in part, on key sections of the SEPA rules (197-11-402, 408,430, and 440) together with results of the EIS scoping process. The Draft Black River Corporate Park EIS included an analysis of the proposed action and each of the alternatives (Al -no action; B2-a single seven-story building;and B3-no action). ELEMENTS OF THE ENVIRONMENT TRACT A-MITIGATION CONDITIONS A. TOPOGRAPHY/SOILS TOPOGRAPHY: The Draft and Final EIS note that approximately 10,000 cubic yards of fill for regrading will be necessary to establish desired elevations on Tract A. Cuts and fills would be balanced to the extent possible to minimize the need to import soil. It is possible that the site's elevation would increase by up to approximately five feet in order to achieve desired grades. The tract's present elevation varies from 18 to 22 feet. (Floodplain elevation is 15 feet.) It is anticipated that grading for all three phases would be done in the initial phase of the project. The EIS notes that all construction impacts, including fill and grade, could have an adverse impact on the heron colony and other wildlife. In addition, to reduce the amount of post-construction settlement under the proposed Phase I single-story building, an additional three feet of material will be added as a preload 3 II 05/28/91(MITDOCA) over the existing fill, left in place for approximately 10 weeks and then removed from the site. This could also add to the construction impacts for noise, air quality, wildlife impacts, water quality. The site has been previously filled and this additional fill, if placed in a manner consistent with the King County Surface Water Manual requirements and with an erosion and control plan, should not cause significant adverse erosion impacts. In addition, if construction methodology and timing requirements are followed, impacts on wildlife should be substantially mitigated. The effect of this fill on existing vegetation found on site is discussed under the Plants Section of this document. I,I SOILS: The FEIS notes that soil investigation results showed that priority pollutant concentrations were detected at relatively low concentrations with the exception of Cadmium and Total Petroleum Hydrocarbons. These two exceeded Washington State Department of Ecology's (WSDOE) proposed industrial soil cleanup concentrations. WSDOE has no cleanup standards for the other pollutants found on site. Movement of all • contaminants located on Tract A would be minimized by the site's low permeability soils and the covering of pollutants with asphalt and concrete surfaces, and/or four to five feet of clean fill. Soils brought in as fill for either preloading, construction or berm usage, will be reviewed for suitability by a qualified soils engineer. No significant unavoidable adverse impacts are expected if mitigation measures are followed. RECOMMENDATION: 1. In order to reduce the construction impacts on the nearby heron rookery and other wildlife,the applicant shall do no grading or outdoor construction during the period from February 1 through July 1 within 800 feet of the heron colony, and from July 1 through August 1 within 600 feet of the colony. (See definition of "major outdoor construction"and Interior work"on page 3-24 of FEIS.) Nexus: Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); WAC 197-11-768; City of Renton Comprehensive Plan D, LM.2. 2. In order to address the hazardous waste presence on Tract A,the applicant shall, unless otherwise determined by WSDOE, seal the contaminated areas on Tract A with asphalt or concrete and/or clean soils. Nexus: Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.M. 3. In order to address any hazardous waste presence on Tract A as determined by WSDOE,the applicant shall establish permanent signage to the satisfaction of the Planning/Building/Public Works Department to warn utilities and others of the location of contaminated soils. A signage plan shall be approved by the Development Services Section prior to the issuance of construction permits. 4 05/28/91(MITDOCA) Nexus: Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.M. 4. In order to ensure that no new contamination is brought onto Tract A, the applicant shall use only uncontaminated soil able to support a trail, side slopes and native vegetation for the proposed berm. Soils shall be reviewed by a qualified soils engineer and shall be approved by the Planning/Building/Public Works Department. Nexus: Mining Excavation & Grading Ordinance (4-10); Land Clearing/Tree Cutting (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.E. 5. In order to ensure that construction impacts do not adversely affect the wildlife on Tract A, the applicant shall phase the preloading and grading consistent with the phasing for the buildings. (See discussion on vegetation.) Nexus: Mining Excavation & Grading Ordinance (4-10); Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D. UNAVOIDABLE ADVERSE IMPACTS: Even with all mitigation in place,the following impacts are expected: Placement of up to 10,000 cubic yards of fill on Tract A and an additional amount to construct earthen berms required as mitigation for impacts on unique terrestrial species. Construction impacts on wildlife (noise,dust, and movement from filling and grading activities) cannot be totally mitigated. B. FOUNDATION The EIS notes that the soils on site can be expected to compress when loaded, and that a preloading program has been recommended. The amount of material needed for preloading has not been determined. The one to two-story structures can be supported by conventional shallow foundations. But for structures over two stories high, pile-supported foundations extending to the dense sands and gravels are recommended. Either driven steel piles or auger cast-in-place piles are considered technically possible. However, the driven steel pile construction is noisier and causes more vibrations than auger pile construction. RECOMMENDATIONS: 6. In order to address the cumulative construction noise and vibrations impacts on wildlife,the applicant shall use only auger cast-in-place construction techniques in lieu of pile driving. 5 05/28/91(MITDOCA) II Nexus: City of Renton Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D. C. SEISMIC The EIS notes that an evaluation of the liquefaction potential of the solids in the vicinity of the project site was performed in 1983 for the expansion of the Metro's Renton Treatment Plant located on an adjacent parcel. It was concluded that the potential for liquefaction at • this site is quite low. On Tract A, the soil contains plastic silts and medium dense sands which diminish the potential of liquefactions. (Earth Consultants 1988) It was determined that seismic impacts to the site may be mitigated by good building practices and techniques. follow TO APPLICANT: On Tract A, the design of all buildings shall the Uniform Building Code (UBC). RECOMMENDATIONS: No additional mitigation measures needed. D. AIR QUALITY The Puget Sound Air Pollution Control Agency is responsible for controlling stationary sources of air pollution in the central Puget Sound region, while WSDOE is responsible for monitoring carbon monoxide (CO) levels. None of the monitoring sites for either of these agencies are close enough to the study area to be considered representative of the CO concentrations in the project area. Given the current density of land use development and the existing roadway network, existing violations of the CO standards are considered unlikely in the immediate vicinity of the project area. The applicant will be asked to reduce SOV trips to and from the site through a Transportation Management Plan (TMP) (see transportation section of this document). Reduction in auto trips serves to reduce emissions which contribute to lowered air quality. SIGNIFICANT ADVERSE IMPACTS: None on Tract A. See Tract B discussion. RECOMMENDATIONS: Mitigation measures will be specified under Tract B section for Transportation. E. SURFACE WATER MOVEMENT - - The EIS notes that the primary impacts of the proposed projects on Tract A would result from the increase in impervious surface and the resulting change in runoff volume and - timing. Runoff is proposed to be routed through biofiltration swales to the P-1 Pond. Due to excess capacity of the P-1 channel, significant impacts to the pond from the additional flows are not anticipated. However, the city will review detailed drainage plans and any previous agreements regarding discharge from the Corporate Park properties to the P-1 Pond during the site plan approval process. 6 05/28/91(MITDOCA) The P-1 channel and pond were constructed on land dedicated to the City by First City Development Corporation. The pond and channel are regional detention/retention facilities, used for flood control for the Green River Valley area. The management of this area, (e.g., water levels, plantings, sediment dredging), affects the regional flood control, surface water volumes, vegetation on site, and wildlife in the area. Three entities are involved in the management of the area: the Soil Conservation Service (SCS), King County Surface Water Management Division, and the City of Renton. Adjacent shoreline owners also affect the management of the pond. First City Development Corporation is one of these owners. NOTE TO APPLICANT: In order to address surface water impacts, the applicant must comply with City of Renton Public Works Drainage requirements and construct in a manner consistent with the recently adopted King County Surface Water Design Manual. The applicant must calculate runoff volumes from the site, prepare a Level I downstream analysis and design the swales using methods outlined in the Surface Water Design Manual. In order to address detention/retention and water quality compliance, on Tract A, the City will review the need for a wet pond system prior to discharge of runoff to the P-1 Pond based on review of existing agreements as part of the site plan approval process. RECOMMENDATIONS: 7. In order to reduce surface water impacts, FCDC or subsequent owners, along with the City, Metro, King County, SCS, and other abutting landowners shall participate in the preparation and implementation of a management plan for the P-1 Pond, under the leadership of the City of Renton, as defined in Section 3.4.1 of the Final EIS. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Surface & Storm Water Drainage Ordinance, City of Renton Municipal Code (4-22); City of Renton Green River Valley Plan I.C.4.; City of Renton Comprehensive Plan I.A., I.C., I.G., I.H., I.I. SIGNIFICANT UNAVOIDABLE ADVERSE IMPACTS: Even with Best Management Practices and required surface water run-off plans and structures, the volume of stormwater runoff from Tract A and B will increase with development. The Level I downstream analysis required by the City will determine impact of that increase. Cumulative impacts to the pond from adjacent land uses and downstream land uses are expected, but are not quantifiable at this time. F. SURFACE WATER QUALITY The EIS notes the only surface water features on Tract A are two small wetlands. Both would be filled and mitigation is suggested under wetlands section of this document. Grading,filling, and preloading could introduce sediment to the P-1 Pond and Springbrook Creek from erosion action during construction. Following construction, the most significant water quality impact would be the introduction of contaminants associated with runoff from parking and'landscaping areas. Hydrologic mitigation measures would be determined as part of the City's review of the detailed drainage plans for the project. Biofiltration swales, oil/water separators and other measures associated with the Storm Water Design Manual would be implemented. 7 05/28/91(MITDOCA) RECOMMENDATION: 8. In order to reduce surface water impacts, on Tract A, the applicant shall prepare and submit a conceptual Erosion Control Plan to the City, as specified in the Draft and Final EIS, Section 3.4.2. Based on this conceptual plan, additional mitigation measures will be defined by the City during site plan review. At a minimum: - the applicant shall install and maintain oil/water separators; - install biofiltration swales per City and WSDOE requirements and recommendations. Based on City review of the drainage plan, the applicant may be required to treat runoff from paved areas in a wet pond prior to discharge to the P-1 Pond. A final erosion control plan shall be submitted prior to issuance of construction permits. As mentioned under Water Quantity Section of this document, the applicant shall participate In the management plan for the P-1 as defined in Section 3.4.1 of the Final EIS. (See mitigation measure No. 7.) Nexus: City of Renton Environmental Review Ordinance (4-6-22).; Surface & Storm Water Drainage Ordinance (4-22); Valley Plan I.C.4.; City of Renton Comprehensive Plan I.D., I.H., I.F., I.J., I.A.; City of Renton Land Clearing Ordinance (4-9) UNAVOIDABLE ADVERSE IMPACTS: Even with the use of biofiltration swales, wet ponds, and implementation of an erosion control plan, 20 to 40 percent of suspended solids and metals, 17 to 33 percent of oil and grease, and 15 to 100 percent of the nutrients originating from the project site,as with all project sites,will eventually enter the receiving water. G. VEGETATION The draft and final EIS present a list of plant species occurring on the site. Generally,all of Tract A consists of grasses and shrubs with some scattered deciduous trees. Approximately 11.6 acres of this land would be converted to a developed site. None of the species or the vegetative types on Tract A are considered sensitive, threatened, or endangered in Washington. However, the vegetation does provide limited habitat for 'I wildlife. RECOMMENDATIONS: - 9. In order to reduce the impact of vegetation removal on site and provide screening, the applicant shall participate with the City of Renton, Metro, King County and _ SCS in a shared-cost coordinated planting program for the portion of the shorelines of the P-1 Pond and Springbrook Creek along Tract A under City ownership. Nexus: Shoreline Master Program; City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A.; Valley Plan I.C.4., I.C.8. 8 05/28/91(M DOC:A) 10. In order to reduce the impact of human intrusion, the applicant shall plant native lowland trees and shrubs (on the applicant's and City-owned property between the shorelines of P-1 Pond and Springbrook Creek, and the berm recommended in Measure 14,)to provide additional screening,visual and biological diversity, and wildlife habitat using wildlife habitat using species identified in Section 3.5.1 of the Final EIS. The plantings shall be integrated with the existing vegetation on the side slopes between Tract A and the P-1 Pond. Planting plans shall be submitted to the Development Services Division of the Planning/Building/Public Works Department during site plan review. This buffer shall be provided before major site preparation or construction activities occur. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 11. The applicant shall increase the setback distance on Tract A to 600 feet from the heron colony for all new development in order to mitigate against the impacts of construction to the herons. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E.;Valley Plan I.C.8. 12. In order to mitigate the loss of vegetation and wildlife habitat, the applicant shall plant native lowland trees and shrubs in the setback area established in Measure 11 and using the species specified in Section 3.5.1 of the Final EIS. This buffer shall be provided before major site preparation or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. The landscape plan for this element shall be submitted to the DSD during site plan review. The applicant shall not grade or construct until the plan is approved and implemented. Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.C., I.D., I.E., I.A., I.J.;Valley Plan I.C.4., I.C.8. 13. In order to mitigate the loss of vegetation,the applicant shall develop a landscape plan for the entire site for site plan approval, excluding the areas in.Measures 9, 10 and 11. Submitted at the time of construction permit, the plan shall include a detailed planting plan with specifications to mimic native plant community composition and structure. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.C., I.D., I.E., I.A., I.J.;Valley Plan I.C.4., I.C.8. - 14. In order to reduce the impact of vegetation removal, human intrusion and to create wildlife screening, the applicant shall construct within and along the 600 foot setback from the nearest heron nest tree (in the main heronry) on Tract A, a benched 10-foot high earthen berm and trail and vegetate with a view obscuring screen of 20 foot tall native evergreen trees and native shrubs in a double staggered planting row. This requirement must be completed and verified by the 9 05/28/91(MITDOCA) Development Services Division of the Planning/Building/Public Works Department before any further construction or grading. This condition must be implemented before any building construction. (See Figures 3-1,3-2 FEIS.) Nexus: Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6- 22); City of Renton Comprehensive Plan I.D., I.F, I.A. 15. In order to mitigate for vegetation removal and to provide additional wildlife screening between the Tract and the P-1 Pond and channel, the applicant shall • construct a five foot high earthen berm and trail along the remainder of the shoreline (not covered in Measure No. 14) along Springbrook Creek and the P-1 Pond. The applicant shall provide a visual buffer between the heron rookery and development by spacing six to eight foot evergreen trees and shrubs on the berm benches in a double staggered planting row (see mitigation measures defined in Section 3.5.3 of the EIS) prior to further construction or grading. The plantings shall be verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (See Figures 3-1, 3-2 FEIS.) Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A., I.C., III.C., III.D.;Valley Plan I.C.8. 16. In order to reduce the impacton vegetation,etation, the applicant shall ensure optimal 9 plant survival and plant growth on all site landscaping by requiring irrigation and maintenance on FCDC property. The applicant shall present a bond of 10 percent of the value of all new landscaping materials for a minimum of five years for irrigation and maintenance, to the satisfaction of the Development Services Division of the Planning/Building/Public Works Department. Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.C., I.A., III.C., III.D.;Valley Plan I.C.8. 17. The applicant shall plant additional native shrubs and trees along the eastern boundary of Tract A in the acres designated as "a potential heron flight zone;"to reduce the impact of human intrusion in the critical area prior to any substantial construction or grading. ( ) Landscaping Nexus: City of Renton Environmental Review Ordinance 4-6-22 ; Ordinance (4-31-34); Land Clearing and Tree Cutting Ordinance (4-9) UNAVOIDABLE ADVERSE IMPACTS: The proposed actions would result in the permanent loss of 11.6 acres of vegetation/habitat on Tract A. H. WETLANDS The impacts of the proposal would Include the loss of 0.1 acres of two wetlands formed when Tract A was regraded following construction of the P-1 Pond. These two wetlands 10 05/28/91(MITDOCA) are vegetated by soft rush and a thicket of pioneering willow. Because the wetlands are hydrologically isolated and lie approximately 15 feet higher than the P-1 Pond summer water elevations,their functional value is relatively low. The proposal would fill the 0.1 acre of wetlands on Tract A. RECOMMENDATION: 18. The applicant shall mitigate for the loss of 0.1 acres of wetlands on Tract A by creating an additional new or enhanced wetland area adjacent to the old Black River channel on Tract B which historically could have been wetland. This shall be done by submitting a Wetland Enhancement Plan to the Development Services Division of the Planning/Building/Public Works Department prior to the public hearing on the site plan. Final plans must be approved before the issuance of site preparation/construction permits. Nexus: Surface & Storm Water Drainage Ordinance (4-22); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.J, I.C., I.A. WILDLIFE RESOURCES The EIS presents a list of birds, mammals, amphibians, and reptiles observed or potentially occurring in the project area, including the P-1 Pond and the adjacent riparian areas. Thirty-six species of mammals are known to occupy habitat similar to that which occurs in the vicinity of the project area. Six species of mammals, or their signs, have been observed on the project site or in the immediate vicinity. As many as 85 species of birds, as well as 19 species of reptiles and amphibians, may occur in the vicinity of the project area. Small mammal trapping was carried out on Tract A and B during July 2-4, 1990. Six deer mice were trapped on Tract B (during 30 trap nights) and one on Tract A (during 48 trap nights). This indicates a lower population of rodents on Tract A due to the sparser vegetative cover and duff layer on it. RECOMMENDATIONS: 19. The applicant shall show a setback distance on Tract A from the heron colony to development from 450 feet as defined in the EIS to 600 feet, in order to reduce the intrusion of human and vehicular activity on the heronry. This revision must be submitted at the Site Plan Review stage. (Same as Measure#11.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33) 20. In order to mitigate the loss of vegetation and habitat,the applicant shall develop a landscape plan for the entire site for site plan approval. Specifications which mimic native plant community composition and structure shall be submitted at the time of construction permit. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. (Same as Measure# 13.) 11 05/2B/91(MITDOCA) Nexus: Land Clearing (4-9); Landscaping (4-31-34); Environmental Review • Ordinance (4-6-22); Valley Plan I.C.8; Comprehensive Plan I.A., I.C., I.D., I.E., I.G., I.J., III.C., III.D.; Shoreline Master Program !I 21. In order to reduce the impact of human intrusion, the applicant shall, prior to building construction, construct and vegetate the 10 foot high berm with shrubs and trees having a minimum height when planted of at least 20 feet on sufficiently close spacing to create a visual buffer, and vegetate the five foot high berm with shrubs and six to eight foot tall evergreen trees. In addition, the applicant shall plant native lowland trees and shrubs (on the applicant's and City-owned property between the development, P-1 Pond and Springbrook Creek and the berm), to provide additional screening, visual and biological diversity, and wildlife habitat. The plantings shall be integrated with the existing vegetation on the side slopes between Tract A and the P-1 Pond and plans delineating it shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to site plan review. (This measure is the same as 9, 10, 11, 14, 15, &20.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 22. In order to partially mitigate for the loss of 11.6 acres of terrestrial wildlife habitat, the applicant shall plant native lowland trees and shrubs as determined in the Landscape Plan of Measure 20, along the P-1 Pond and Springbrook Creek shorelines to the limit of the 600 foot buffer area (see Section 3.5.1 of DEIS for species list). These plantings shall be provided before major site preparation or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. (Same as Measure #13.) Nexus: Shoreline Master Program; Land Clearing & Tree Cutting (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.3, I.D., I.J, I.C., I.G.;Valley Plan I.C.S. 23. In order to reduce human intrusion into wildlife area adjacent to the P-1 Pond, the applicant shall instead provide access to the proposed new trail established in Measure 21 from Oakesdale Avenue SW west through the Tract A and out to Oakesdale Avenue SW again, on the berm as shown in Fig.3-1,3-2 FEIS. Nexus: City of Renton Comprehensive Parks Plan; City of Renton Environmental Review Ordinance(4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.H. 24. Along the trail established in Measure No. 21,the applicant shall construct a fence to separate the trail and Springbrook Creek and the P-1 Pond, preventing human intrusion into wildlife habitat areas. Plans for these improvements shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to site plan public hearing. -- Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.H., I.I., I.J., I.IC;Valley Plan I.C.S. 25. In order to reduce human intrusion into the wildlife habitat along the edges of the P-1 Pond, the applicant shall provide for the installation of gated barriers on the 12 05/28/91(MITDOCA) City-owned maintenance roadway easement, perpendicular to the easement. The barriers shall be installed at the east and west access points of the roadway. Future maintenance will become the responsibility of the City of Renton. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.H, I.J., I.K;Valley Plan I.C.8. 26. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with non-glare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectivity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); Valley Plan 1.8; City of Renton Comprehensive Plan I.A., I.D. UNAVOIDABLE ADVERSE IMPACTS: Loss of 11.6 acres of wildlife habitat on Tract A and a short term disturbance during the construction of the project to wildlife, including waterfowl, which use the portion of the P-1 Pond bordering Tract A. J. UNIQUE TERRESTRIAL RESOURCES (Great Blue Herons) The EIS notes that guidelines have been presented to reduce the impact on the Great Blue Heron Colony present in the riparian area north and east of Tract A and north of Tract B. The guidelines have included setbacks, berms, plantings, reduced construction scheduling and phasing, reduced building heights, hooded windows, building colors and monitoring. These measures are listed in detail below. However, while these measures are prudent public precautions, it is not clear whether they will be sufficient to mitigate the construction and operational aspects of the proposal on the herons. Monitoring programs provided as part of this document will provide added scientific evidence of the success or failure of the measures. Adjustments can then be made based on these scientific observations. RECOMMENDATIONS: The following mitigation measures are specific to Tract A, other measures follow that are common to both tracts. 27. For the portion of Tract A lying within 600 feet radius of the nearest heron nest tree, the applicant shall establish a native vegetation buffer and the berms as specified in Conditions 11 and 12. This area shall be an area of no development or human intrusion, except as required to maintain the berms and plantings. Plantings shall be approved through a site plantings plan established in Measure No. 13. All planting or other activity shall comply with the time limitations set forth for construction activity within 800 feet of the heron colony. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 28. In order to minimize the impacts on the wildlife,the applicant shall limit the Tract A building height to four stories (57 feet) between 600 and 800 feet from the heron 13 05/28/91(MITDOC4) colony and 200 feet from the P-1 Pond and the applicant shall limit the height of buildings to 71 feet (five stories) beyond 800 feet from the heron colony. (See Figure 3-1 of FEIS.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 29. In order to reduce construction impacts, the applicant shall construct the berm, landscape buffer, and Building A (to be located outside the 1000 foot radius from the heronry) or Buildings B and/or C (proposed within 800 feet of the heron colony). Any remaining buildings may be constructed in the second construction season. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 30. In order to minimize human intrusion, the applicant shall not construct any • parking, building or accessory use within 600 feet of the heron nesting colony, except the landscaping and berms, as specified as mitigation in this FEIS. The applicant shall comply with the time limitations set forth for construction activity within 800 feet of the heron colony. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 31. In order to minimize the impact on nesting Great Blue Herons and other wildlife, the applicant shall exclude major outdoor construction activities (preloading, grading, foundations, structural steel, installation of dryvit panels, roofing and hardscape) within 800 feet of the heron colony during the period from February 1 to July 1 and within 600 feet of the colony from July 1 to August 1. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 32. In order to minimize the impacts on the herons and other wildlife, the applicant shall do interior work (rough-in mechanical and electrical, glazing installation, interior shell finish, glazing, and tenant improvements) once the berms, building shells and window hoods have been installed. The applicant shall complete landscaping (as specified below) immediately after, or in landscaping in conjunction with, or after,the construction of the buildings. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 33. In order to reduce the impact of human intrusion on wildlife(including herons) into the area, the applicant shall, prior to construction of building and parking, construct a 10 foot high benched earthen berm. This berm shall then be -- vegetated with 20 foot tall view obscuring screen of evergreen trees and native shrubs in a double staggered planting row. Berm and tree height are intended to achieve a 30 foot screen. A five foot high berm along the remainder of the site bordering the P-1 Pond and Springbrook Creek (see Figures 3-1 and 3-2 FEIS) shall also be constructed and panted as described in Measure#15. This measure is intended to be consistent with Measure No. 14 and 15. 14 05/28/91(MfTDOCA) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E., I.H., III.C., III.D.;Valley Plan I.C.8. 34. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 35. In order to protect wildlife, the applicant shall plant and maintain a linear buffer of native vegetation along the P-1 Pond and Springbrook Creek. This is fully described in Condition 9, 10, 11 and 12. Nexus: Landscaping (4-31-34); Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 36. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with non-glare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectivity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); Valley Plan 1.8; City of Renton Comprehensive Plan I.A., I.D. 37. In order to ensure that adequate information is available on the impact of the building on the heron and other wildlife, the applicant shall provide a monitoring plan for the construction and post-construction period. The plan shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to the site plan public hearing. This monitoring plan shall include the following: a. An element to monitor the effects of construction activities on nesting Great Blue Herons. This element of the plan shall be developed in consultation with the Washington Department of Wildlife; b. An element providing a process for the establishment of a monitoring committee, comprised of individuals knowledgeable in the area of wildlife preservation issues. It shall be formed prior to_the issuance of grading and building permits to develop and implement the monitoring plan. The committee shall consist of a representative from the applicant, the City of Renton, and the public. The Washington Department of Wildlife shall have an advisory role to ensure that the monitoring effort is consistent with any other heron monitoring programs in the region; c. An element providing for committee review of monitoring to be done by a certified biologist. Monitoring results for the period from January 1 to June 1 of each construction season will be presented to the Environmental Review Committee in an interim report. The results will be used to determine if there is a need for additional mitigation measures such as additional screening of construction or alterations in construction 15 05/28/91 e/za/ 1(nrroocA) timing, methods, phasing, screening or location of development; as well as whether construction time limits, phasing, screening or other mitigation may be modified or eliminated based upon evidence that the heron colony is inactive for that particular season. Such determination could be made by June 1 of each year. The berm and its landscaping, however, shall not be subject to elimination under this condition. d. An element providing for committee report on the monitoring results. The results of the monitoring period (January 1 to December 31), and the Committee's report shall be in an annual report to be presented to the City of Renton's Environmental Review Committee for their consideration. The annual report will describe the condition of the heron colony, present the results of monitoring and impacts of construction (vis-a-vis other factors such as weather conditions, availability of food resources and other regional factors,and comparison to similar urban colonies); e. An element establishing ERC's ability to act on the annual report. The annual report shall be used by the Environmental Review Committee (ERC) to determine the need, if any, for additional mitigation measures such as enhanced buffering and/or screening of construction activities, noise mitigation, and alterations in construction timing, methods, or location of development activity; NOTE: Results of first year monitoring may also be used by the committee to determine allowable construction activity (i.e., the number of buildings/parking structures to be built at any one time)for the ensuing construction period after the first year. f. Monitoring and annual reports shall continue for at least one year after completion of all project construction as determined by the City's Environmental Review Committee. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E.;WAC 197-11-768 38. In order to minimize the impacts on the herons and other wildlife, the applicant shall do interior work (rough-in mechanical and electrical, interior shell finish, glazing, and tenant improvements) once the berms, building shells and window hoods have been installed. The applicant shall complete landscaping (as specified below) immediately after, or in landscaping in conjunction with, or after, the construction of the buildings. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 39. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on•Great Blue Herons prior to site plan public hearing. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 16 05/28/91(MITDOCA) UNAVOIDABLE ADVERSE IMPACTS: Unavoidable adverse impacts will include changes in heron flight patterns to and from the heron colony, occasional disturbance to herons (feeding and movements) during construction and during day-to-day use of the buildings and parking areas. B. NOISE The EIS notes that a number of noise sources exist in the vicinity of Tracts A and B, including vehicular noise along nearby roadways and 1-405, intermittent noise associated with warehouse and industrial uses south of the site such as the Metro Wastewater Treatment Plant; low flying aircraft; occasional rail activities north of the site;and office and other construction east of the rookery. After development, noise sources such as mechanical units of the buildings, cars coming and leaving the site,and general intensified human use and activity can be expected. In addition, cumulative noise impacts from other projects in the area may also be of concern. As EISs for future projects are completed, additional noise data will become available. Mitigation proposed for this project concentrates on impacts from this project alone. It is expected that each new project will have noise mitigation. In addition, scientific research has not adequately covered the response of herons and other wildlife to noise impacts throughout their life cycles. Therefore, it is prudent for the city to condition the development in an effort to reduce noise as much as possible. RECOMMENDATIONS: 40. In order to reduce noise impacts, the applicant shall restrict outdoor construction activities to week days and to the hours of dawn to dusk during the summer and fall months and 7:00 a.m.to 6:00 p.m. during the winter and spring months. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 41. In order to reduce noise impacts, the applicant shall ensure that all construction equipment has sound control devices no less effective than those provided on the original equipment (e.g., equipment mufflers and noise shrouds are intact and operational). Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 42., The applicant shall, in order to control noise, provide a noise education program for operators of excavation equipment and haul trucks. The program shall discourage wide open throttles, compression release brakes, and provide incentives for operators using noise suppression methods such as shutting off equipment when not in use. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.;City of Renton Comprehensive Plan I.B. 43. The applicant shall, in order to reduce noise impacts, erect a temporary noise barrier around loud equipment. 17 05/28/91(MITDOCA) I � Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 44. In order to reduce construction noise, the applicant shall require contractors to use electrically driven equipment rather than pneumatically driven machines, whenever possible. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 45. In order to reduce noise impacts, the applicant shall certify, in writing to the. Development Services Division of the Planning/Building/Public Works Department prior to commencing site preparation or construction activity, that all construction equipment complies with pertinent equipment noise standards of the U.S. Environmental Protection Agency. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. NOTE TO APPLICANT: The applicant must comply with the City of Renton's Noise Ordinance,Zoning Code Title 8, Chapter 7, Health and Sanitation. 46. In order to reduce noise impacts on wildlife and unique terrestrial resources, the applicant shall use auger cast Jin-place piling construction in lieu of conventional pile driving. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. 47. In order to minimize the impact of construction noise on nesting herons, the applicant shall exclude major outdoor construction activities within 800 feet of the heron colony during the period from February 1 to July 1 (Section 3.5.4 of FEIS). Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D.; Green River Valley Policy Plan I.C.8. 48. In order to minimize the impact of noise on herons and other wildlife,the applicant shall soundproof and locate all noise-generating units such as air conditioning units in units which will minimize the effect on wildlife. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D. UNAVOIDABLE ADVERSE IMPACTS:, With all mitigation in place, noise would result from construction activities and, to a lesser degree, from occupation and use of the site following construction. It is unclear how herons would react to this impact. C. HAZARDOUS WASTE As discussed in the section on SOILS, Tract A was assessed for contamination resulting from dredged materials deposited on this site during the P-1 Pond construction. Cadmium and Total Petroleum Hydrocarbons were present in one soil sample at concentrations 18 05/28/91(MITDOCA) exceeding Washington State Department of'Ecology's proposed industrial soil cleanup standards. WSDOE does not have clean-up standards for the other pollutants found on- site. These contaminants exhibited relatively low solubility and/or appeared localized. These are unlikely to migrate from the area of contamination. If the materials were covered either with an asphalt and/or concrete surface or major soils overlay, potential for local surface and groundwater quality degradation appears low. 49. In order to address the hazardous waste presence on Tract A, unless otherwise determined by WSDOE,the applicant shall seal the contaminated areas on Tract A with either an impermeable asphalt and concrete surface or an overlay of clean soil. Nexus: Mining Excavation & Grading Ordinance (4-10); Hazardous Materials Ordinance; City of Renton Comprehensive Plan I.B., I.M.; City of Renton Environmental Review Ordinance(4-6-22) 50. In order to prevent inadvertent future contact with contamination, the applicant shall note the location of any identified contaminated soils exceeding WSDOE clean-up standards, previously identified or found during construction on site on the as built drawings, specifying the levels of pollutants and the origin of the pollutants. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Mining Excavation&Grading Ordinance (4-10); and Hazardous Materials Ordinance; City of Renton Comprehensive Plan I.B., I.M. UNAVOIDABLE ADVERSE IMPACTS: None known at this time. D. RELATIONSHIP TO EXISTING USE The proposal suggests two four-story buildings and a single-storied building for Tract A. These buildings would fit with the office park uses to the east of the site in height, use, and design. However, the Metro Treatment Plant, directly south of Tract A, is undergoing. environmental review for an expansion from its present treatment capacity of 72 million gallon per day to 108 mgd for projected year 2005 flows. Possible expansion beyond the year 2005 flow levels are also anticipated. The new Metro facilities would be visible from the upper stories of the two proposed four-story buildings on Tract A. Views of the facility from the proposed single-story building will be limited. During the construction period for wastewater improvements, high odor generation is possible. Although the Metro project will provide screening and odor control, it is unlikely that all impacts can be mitigated. These impacts are, clearly, not from the Black River Corporate Park, Phases VII and VIII proposal. Therefore, this project cannot mitigate. The Metro project will be required to mitigate its own impacts, as this document requires mitigation for the Black River impacts. However,the City of Renton believes that proper siting,design and buffering on the Metro site and the Black River site will reduce impacts for both projects. 19 05/28/91(MITDOCA) ij RECOMMENDATIONS: I j 51. In recognition of the adjacent Wastewater Treatment Plant, the applicant shall ensure that the multi-storied buildings on Tract A are oriented away, to the greatest extent possible,from the Metro Plant. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33) POTENTIAL UNAVOIDABLE ADVERSE IMPACTS: The Metro Wastewater Treatment Plant DEIS states that even with Metro's proposed •• odor control plan, offensive odors may be generated from the treatment facility and extend beyond the boundaries of the site. These odors could occur as part of the sewage treatment plant's day-to-days operations and, but most likely, would occur from mechanical failures, emergencies, or system upsets. These odors have the greatest potential for crossing Tracts A and B when the prevailing winds are from the south and southwest. E. LIGHT AND GLARE Proposed actions from both Tracts A and B would require outdoor lighting for parking, sidewalks, and access roads, and indoor lighting for office space, hallways and foyer. The EIS notes that lighting for parking areas will be low level light, not visible from off site. The source of light from automobiles, potentially of greater significance, can be partially screened from the rookery through the use of dense foliage. Building lighting, of a diffused source, should also not adversely impact heron nesting some 600 feet or more away. Of greater concern is visible human activity within these buildings. RECOMMENDATIONS: 52. To reduce the intrusion of lighting to areas where it is not desirable, the applicant shall use down light standards. Multiple standards at lower height shall be preferred over taller standards with greater dispersion characteristics. Areas within 200 feet of the P-1 Pond or 600 feet of the Great Blue Heron rookery shall not have artificial illumination. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.; Valley . Plan I.C.8. 53. Since Tract A has no existing dense tall-growing vegetation to buffer it, the applicant shall have landscape plans approved by the Development Services Division of the Planning/Building/Public Works Department for the following: a) _ dense evergreen vegetation along earthen berms, and b) the landscape plan for the parking area with the goal of reducing headlight glare from automobiles, prior to the site plan public hearing, consistent with measures 9, 10, 11, 12 and 13 of Section G. Nexus: Landscaping Ordinance (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.;(Valley Plan I.C.8. 20 05/28/91(MRDOCA) 54. In order to reduce disruption caused by visible human activity, the applicant shall screen all windows facing and within 800' of the heronry, located above the 30- foot tall tree/berm. The screens shall be hoods or screens which substantially block heron views of human activity, particularly at dusk or night from the rookery. Hoods or screens may be removed once trees of sufficient height and density have grown above the height of the hooded windows. NOTE: The applicant is advised to consult with the Fire Department on the design and flame dispersion characteristics of hoods or screens before they are installed. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 55. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing, consistent with measure 37. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. UNAVOIDABLE ADVERSE IMPACTS: Even with all mitigation measures in place, light and human movement will increase on-site originating from buildings, parking and automobile headlights. This increase could affect wildlife and heron on-site. F. HISTORIC AND CULTURAL As mentioned in the DRAFT and Final EIS, one five-acre area of Tract A was not covered in an earlier extensive cultural resource survey and archaeological excavation. The following recommendations address this area. RECOMMENDATIONS: 56. Prior to any site preparation or building activity in this area, to ensure that cultural resources are not disturbed, the applicant shall conduct a three phase archaeological survey (site inspection and surface coring), evaluation, and report of the five-acre western portion of Tract A. This survey shall be carried out by a professional archaeologist agreed upon by the State Office of Archaeology. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan IX.E 57. During excavation and construction, the applicant shall ensure that any excavations in this five-acre area that intrude upon native soils are monitored by a professional archaeologist certified by Washington State Department of Community Development, Office of Archaeology, during excavation. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan IX.E 21 05/28/91(MITDOCA) 58. The applicant shall develop a contingency plan (notification to State Historic Preservation Office and Tribes) for actions to be taken in the event cultural resources are discovered during construction on either or both Tracts A and B. This plan shall be filed with the Development Services Division of the Planning/Building/Public Works Department prior to the issuance of any permits for site preparation or building construction-related activity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan IX.E G. TRAFFIC The EIS notes that the Traffic Impact Analysis for Valley 405 Business Park utilizing the Grady Way Corridor Transportation Improvement Study, shows that the trip generation of 5,180 vehicular trips per day from both Tracts A and.B would be 30-35 percent less than those assigned in the Grady Way corridor study model for which the developer provided mitigation. The project will, however, increase air quality impacts through the introduction of numerous car trips to the area. These are discussed in Section G, Air Quality,for both Tracts A and B. Other projects proposed for the area will also impact the surrounding streets. The proposed Metro Wastewater Treatment Plant Expansion (see DEIS for this project) and the proposed Rabanco Waste Reduction Facility (DEIS forthcoming) may combine with this project's traffic and existing traffic to reduce Levels of Service at several key intersections and increase peak hour counts. Construction traffic from these three projects may also occur during the same timeframe, l.e., 1991-1996. Cumulatively, the impacts of this increased traffic could be significant, however, all impacts have not yet been compiled for the other projects. It is possible that mitigation measures will have to be coordinated between these projects if all are constructed. RECOMMENDATIONS: 59. In order to address potential cumulative impacts, the applicant shall have an approved Construction Transportation Plan which addresses possible construction traffic conflicts with the Metro Wastewater Treatment Plant and the Rabanco Waste Recycling Facility during their construction and possible solutions prior to site plan public hearing or prior to the issuance of site preparation and/or building permits). The plan should consider the common use of a construction staging areas and construction phasing to reduce impacts. The plan shall be approved by the City of Renton Development Services Division. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 60. The applicant shall review, revise and implement a Transportation Management Plan for the Black River Corporate Park to increase its effectiveness. The revisions to the,TMP shall include a provision to evaluate the goal identified in the existing TMP (a reduction of 10 percent of SOV trips within two years following building occupancies). The plan must be approved by the City,with Metro Transportation Section review before occupancy of any building. 22 I i 05/28/91(MffDOCA) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to address traffic impacts, the applicant shall submit a report to the City showing the results of the TMP evaluation formulated in the above mitigation measure. If targeted goals are not met within two years, additional incentives for HOV participation shall be installed (i.e., establishment of a vanpool operation). The incentives shall include parking fees, the purchase of vans for vanpools, and a guaranteed ride home program for registered vanpool users.. The subsidy shall continue until the 10 percent goal is reached. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic impacts, the applicant shall implement a program to provide a free one month bus pass to all new employees (on a five employee per 1,000 sf basis) at the time of each new tenant occupancy in any of the buildings as a part of their TMP. The passes should be for peak hour, two zones, maximum requirement. Prior to site plan public hearing, the applicant shall submit a plan for this measure acceptable to the Development Services Division. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to address traffic impacts, the applicant shall, as a part of their TMP, agree to distribute site-appropriate transit and ridesharing information to new tenants and annually to all tenants. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to display site-appropriate transit and ridesharing information in prominent public locations. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to appoint a Transportation Coordinator to promote and coordinate the use of public transportation and high occupancy vehicles. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic impacts, the applicant shall design and implement a parking management program which provides preferential parking for high occupancy vehicles. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 23 05/28/91(MITDOCA) In order to reduce the traffic impacts, the applicant shall ask tenants to promote an alternative work hour program in order to reduce peak hour trips. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 61. In order to address the impacts of traffic, the applicant shall establish a performance goal for high occupancy vehicle use. This goal and implementation of it shall be reviewed by the City of Renton after two years of building occupancy. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 62. In order to reduce the impacts of traffic,the applicant shall conduct transportation surveys/monitoring to determine participation and interest in HOV and bus transportation. These surveys shall be reviewed by the City of Renton after two years of building occupancy. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; Cityof Renton Comprehensive Plan VII;Valley Plan I.C.5. P 63. In order to reduce the impacts of traffic,the City and the applicant shall review the Grady Way Transportation Study to determine the option for crediting the applicant for previous improvement contributions. Based on earlier contributions and trips expected from this development, the applicant shall pay $592,790 for 3,487 trips not previously mitigated under earlier contributions. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. I � 64. In order to reduce traffic impacts, the applicant shall ensure that truck and wheel washing must be accomplished on-site after each haul trip. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I-B NOTE TO APPLICANT: As required by City of Renton ordinance, the applicant shall abide by hauling hours for large construction vehicles to 7:30 a.m. between 8:30 a.m.and 3:30 p.m.and after 6:30 p.m. NOTE TO APPLICANT: In order to reduce the impacts of traffic, the applicant shall ensure that large construction vehicles shall follow prescribed haul routes. These routes shall be conceptually formulated and submitted at site plan review. The final routes shall be submitted to and approved by the City of Renton prior to the issuance of construction permits. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 24 05/28/91(MITDOCA) UNAVOIDABLE ADVERSE IMPACTS: The potential, unavoidable adverse traffic impacts associated with these developments will be further defined in the Metro Wastewater Treatment Plant and the Rabanco Waste Reduction Facility draft EISs. H. PARKS AND RECREATION The site presently provides passive recreational opportunities for workers in nearby office buildings and the general public. Wildlife-watching, jogging, and walking are the primary uses. If the site is developed, public access to the area would be limited, and the loss of wildlife habitat would reduce some of the passive recreational values of both Tract A and B. RECOMMENDATIONS: 65. In order to mitigate the need for additional recreation and displaced opportunities, the applicant shall construct a pedestrian trail, beginning at Oakesdale Avenue and follow the earthen berms along the west side of the applicant's property, bordering Springbrook Creek and the P-1 Pond. The applicant shall include a viewing platform located approximately 550 feet from the heron colony. The applicant shall continue the trail west on the berm to the west end of the property • and reconnect with the sidewalk system at Oakesdale Avenue. (See Figure 3-1, 3- 2, and 3-3 FEIS.) The maintenance of these areas shall be the responsibility of the property owners into perpetuity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Comprehensive Parks Plan; City of Renton Comprehensive Plan VII-H; I-A; 66. To address the loss of recreational use and the site's proximity to wildlife, the applicant shall provide an easement or dedication with terms satisfactory to the City, ensuring year-round public access to and along the pedestrian trail. The trail shall be screened from the P-1 pond by vegetation. A fence shall be provided between the P-1 pond and the trail to limit human intrusion into the wildlife area. The easement or dedication shall be provided prior to the issuance of any site preparation and/or building permits for development on either Tract A or B. Nexus: City of Renton Environmental Review Ordinance (4-6-22) Comprehensive Parks Plan; City of Renton Comprehensive Plan VII-H; CUMULATIVE IMPACT The continued conversion of land in the area to office park and industrial uses will result in the following cumulative impacts: Soils will be disturbed and moved onto and off development sites; erosion will occur and silt and sedimentation can be expected to increase in the P-1 Pond. Wetlands may continue to be lost; air quality is expected to decline with these projects increasing incrementally the carbon monoxide and ozone levels; wildlife habitat and associated species will continue to decline; and noise levels are likely to increase as will traffic. 25 05/28/91(M(TDOCA) I I NOTE TO APPLICANT: As additional development occurs in the area, mitigation measures should be established and coordinated by the City of Renton for each project to minimize the cumulative adverse effects of the proposals. RECOMMENDATIONS: 67. In order to address potential cumulative impacts, the applicant shall develop a mitigation plan for new construction in the area to eliminate excessive traffic usage of Oakesdale Avenue. Nexus: City of Renton Environmental Ordinance (4-6-22); City of Renton Comprehensive Plan VII.1.A;Valley Policy Plan I.C.5. UNAVOIDABLE ADVERSE IMPACTS: As the area urbanizes with this and other projects, incremental impacts will be felt on air quality, water quality, wildlife habitat and wetlands. Odor and aesthetic impacts may be expected from the Metro Wastewater Treatment Plant Expansion across Oakesdale, and noise, air quality and traffic are expected to increase with the proposed Rabanco facility. 26 05/28/91(MITDOCB) MITIGATION DOCUMENT BLACK RIVER CORPORATE PARK TRACT B OFFICE BUILDINGS PHASES VII/VIII The Environmental Review Committee for the City of Renton issued a Final Environmental Impact Statement for the Black River Corporate Park, Tracts A and B on March 27, 1991. The EIS for this project has identified a number of possible mitigation measures for impacts that were considered to be significant or potentially significant (as defined by quantitative measures whenever such measures were found to exist). These measures, and others which the responsible official may determine are warranted to protect the environment, are the subject of this mitigation document. A number of chapters of WAC 197-11 speak directly to the imposition of mitigation measures. The relevant chapters are cited below. WAC 197-11-060 Content of Environmental Review states that agencies shall "carefully consider the range of probable impacts, including short-term and long-term effects." Impacts shall include "those that are likely to arise or exist over the lifetime of a proposal" or, in some cases, even longer. WAC 197-11-330 Threshold Determination Process requires the responsible official to take into account the following when determining whether a proposal has significant adverse impacts: "The same proposal may have significant adverse impact in one location but not in another location;" "the absolute quantitative effects of a proposal are also important and may result in a significant adverse impact regardless of the nature of the existing environment,"and "Several marginal impacts when considered together may result in a significant adverse impact." In reaching such a decision, SEPA states that the responsible official shall not balance whether the beneficial aspects of a proposal outweigh its adverse impacts, but rather shall consider whether a proposal has any probable significant adverse environmental impacts under the rules stated above. WAC 197-11-448 Relationship of EIS to other considerations. (1) SEPA contemplates that the general welfare, social, economic,and other requirements and essential considerations of state policy will be taken into account in weighing and balancing alternatives and in making final decisions.... The EIS provides a basis upon which the responsible agency and officials can make the balancing judgement mandated by SEPA, because it provides information on the environmental costs and impacts. WAC 197-11-768 defines mitigation as: 1) avoiding the impact altogether by not taking a certain action or parts of an action; 2) minimizing impacts by limiting the degree or magnitude of the action and its implementation, by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts; 3) rectifying the impact by repairing, rehabilitating, or restoring the affected environment; 4) - reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action; and 5) compensating for the impact by replacing enhancing, or providing substitute resources or environments, and/or monitoring the impact and taking appropriate corrective measures. WAC 197-11-660 further states that decisionmakers may impose mitigation measures designed to mitigate the environmental impacts subject to the following limitations: A) mitigation measures, or denials, shall be based on policies, plans, rules or regulations formally designated by the agency; B) mitigation measures shall be related to specific adverse environmental impacts clearly identified in an environmental document on the proposal and shall be stated in writing by the decisionmaker; C) mitigation measures shall be reasonable and capable of being accomplished; D) responsibility for implementing mitigation measures may be imposed upon an applicant only to the extent attributable to the identified averse impacts of its proposal. Voluntary additional mitigation measures may occur; E) before requiring mitigation measures, agencies shall consider whether local, state or federal requirements and enforcement would mitigate an identified significant impact; and F) to deny a proposal under SEPA, an agency must find that: 1) the 1 05/28/91(MITDOCB) proposal would be likely to result in significant adverse environmental impacts identified in a final or supplemental environmental impact statement prepared under this chapter; and 2) reasonable mitigation measures are insufficient to mitigate the identified impact. In imposing mitigating measures, the Environmental Review Committee considered environmental impacts that are expected from the project itself. In addition, several other independent projects are undergoing environmental review in the same geographical area. These include the Metro Wastewater Treatment Plant Expansion, the Rabanco Recycling Facility, and Phase VI of the Black River Corporate Park. The cumulative impacts of these projects have been considered in the formulation of this mitigation document, and will be considered in the mitigation documents of the other projects under environmental review. SEPA states that: "After its decision each agency shall make available to the public a document that states the decisions. The document shall state the mitigation measures, if any, that will be implemented as part of the decisions, including any monitoring of environmental impacts." (WAC 197-11-660(1)(b)). This document is intended to meet this requirement. THE PROPOSED ACTION The proposed action of First City Development Corp. (FCDC) is the construction of a four-year phased project, including three one to four-story office buildings on 12.07 acres of Tract A,and three four to seven- story buildings on the 15.7 acre Tract B, Renton, Washington. Tract A will also include surface parking to accommodate the buildings on Tract A. Tract B will include the construction of a three-story parking structure and associated surface parking. As a result of the State Environmental Policy Act (SEPA) scoping process, comments were received from governmental agencies and interested citizens regarding the major issues that needed to be analyzed in this EIS. Those issues included the following: topography and soils; foundation; seismic; air quality; surface water movement/quantity;water quality runoff 1 vegetation; shoreland/wetlands; wildlife resources; unique terrestrial resources; noise; hazardous waste; relationship to existing land uses; relationship to plans, zoning and shorelines; light and glare; historic and cultural resources; traffic; parks and other recreational facilities; and cumulative impact. This EIS also contains an original study on the Great; Blue Heron, an urban wildlife resource, based on primary research and empirical evidence gathered from field visits and a compilation of secondary research. This research is entitled "Revised Life History and Effects of Human Disturbance on Great Blue Heron Colonies," Appendix B. A second empirical study is Appendix C, noise monitoring data, July 20, 1990 Geotechnical drilling. A Hazardous Waste Study was also completed on this property and is appended to the EIS by reference. It will be transmitted to the Renton Hearing Examiner and is available for public viewing at the City of Renton Development Planning Division. Finally,the EIS appends, by reference,the following documents: 1974. Auburn Interceptor EIS *1980. U.S. Environmental Protection Agency - Wastewater Management Plan for the Lake Washington/Green River Basins, EIS and Appendices. Report No.910/9-80-077 1981. U.S. Environmental Protection Agency - Final EIS on the Wastewater Management Plan for the Lake Washington/Green River Basins. 1983. Draft Supplemental EIS for the Puget Sound Facilities Engineering Report. 1983. Final Supplemental EIS on the Puget Sound Facilities Engineering Report. 2 05/28/91(MRDOCB) 1983. U.S. Environmental Protection Agency - Municipality of Metropolitan Seattle/Draft and Final EISs, Sludge Management Plan. *1984. Final Supplemental EIS on the Renton Effluent Transfer System Alternative for the Wastewater Management Plan, Lake Washington/Green River Basins. 1984. Public Comments on the Draft Supplemental EIS on the Renton Effluent Transfer System Alternatives for the Wastewater Management Plan, Lake Washington/Green River Basins. *1985. Draft EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. *1985. Final EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. 1986. Final Supplemental EIS for Secondary Facilities and Combined Sewer Overflow Control. 1988. Final Supplemental EIS for West Point Secondary Treatment Facilities. The content of the EIS is determined by the Lead Agency (in this case, the City of Renton) based, in part, on key sections of the SEPA rules (197-11-402, 408, 430, and 440) together with results of the EIS scoping process. The Draft Black River Corporate Park EIS included an analysis of the proposed action and each of the alternatives (A1 -no action; B2-a single seven-story building; and B3-no action). ELEMENTS OF THE ENVIRONMENT TRACT B-MITIGATION CONDITIONS A. TOPOGRAPHY/SOILS TOPOGRAPHY: Cuts and fills are expected on this site, but would be balanced to the extent possible. However, due to the elevations of the site, approximately 35,800 yards of fill would be needed to raise the grade to desired grade. No fill would be placed in either the drainage way at the north end of the site or in the remnant of the Black River channel in the east portion of the site. Grading for all three phases would occur during the first phase of the project. The EIS notes that all construction impacts, including fill and grade, could have an adverse impact on the heron colony and other wildlife. Similar to Tract A, this site had been previously filled during construction of the P-1 Pond. The addition of fill to the site will not be inconsistent with land development policies in the Valley Plan. Because no dredge spoils were placed on this site from the P-1 Pond forebay, no contamination sampling was required. RECOMMENDATIONS: 1. In order to address the construction impacts on wildlife and the nearby heron rookery, the applicant shall do no grading or other outdoor construction during 3 05/28/91(MRDOCB) the period from February 1 through July 1 within 800 feet of the heron colony, and from July 1 through August 1 within 600 feet. (See definition of "major outdoor construction"and"interior work"on p.3-24 of the FEIS.) Nexus: City of Renton Mining, Excavation and Grading Ordinance (4-10); Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.M.2 2. In order to ensure that no contamination is brought on Tract B, the applicant shall use only uncontaminated soils able to support a trail, side slopes and native vegetation for the proposed berm. Soils shall be reviewed by a qualified soils engineer and shall be approved by the Planning/Building/Public Works Department. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I-D, Mining, Excavating and Grading Ordinance(4-10) 3. In order to ensure that construction impacts do not adversely affect the wildlife on Tract B, the applicant shall i:lhase the grading and filling consistent with the phasing for the buildings. (See discussion on vegetation.) Nexus: Mining, Excavating and Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.C., I.D. UNAVOIDABLE ADVERSE IMPACTS: Placement of 35,800 yards of fill on Tract B and an additional amount to construct earthen berms required as mitigation for impacts on unique terrestrial species. B. FOUNDATION The EIS notes that any structure over two stories high will need pile supported foundations extending to the dense sands and gravels underlaying the site. Either driven steel piles or auger cast-in-place piles are considered technically possible. However, the driven steel pile construction is noisier and causes more vibrations than auger pile construction. RECOMMENDATIONS: • 4. In order to address the cumulative construction noise and vibrations impacts on wildlife on Tract B, the applicant shall only use auger cast-in-place construction techniques in lieu of pile driving. Nexus: City of Renton Mining, Excavation, and Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.; I.D. C. SEISMIC I The EIS notes that an evaluation of the liquefaction potential of the solids in the vicinity of the project site was performed in 1983 for the expansion of Metro's Wastewater Treatment Plant. It was concluded that the potential for liquefaction at this site is quite low. The soil 4 05/28/91(MITDOCB) in Tract B contains plastic silts and medium dense sands which diminish the potential of liquefactions (Earth Consultants 1988). It was determined that seismic impacts to the site may be mitigated by good building practices and techniques. NOTE TO APPLICANT: Design of buildings shall follow UBC standards. RECOMMENDATIONS: No additional mitigation measures specified. D. AIR QUALITY The Puget Sound Air Pollution Control Agency is responsible for controlling stationary sources of air pollution in the central Puget Sound region,while WSDOE is responsible for monitoring carbon monoxide (CO) levels. None of the monitoring sites for these agencies is close enough to the study area to be considered representative of the CO concentrations in the project area. Given the current density of land use development and the existing roadway network, existing violations of the CO standards are considered unlikely in the vicinity of the project area. The applicant will be asked to reduce SOV trips to and from the site through a Transportation Management Plan (TMP) (see transportation section of this document). Reduction in auto trips serves to reduce emissions which contribute to lowered air quality. The EIS notes that the Carbon Monoxide concentrations in the garage could exceed the maximum one hour and eight hour ambient standards in the absence of adequate open area and two exits. Free air flow through the garage would disperse the CO build up. Building design must accommodate air flow, providing for a dispersion of the pollutants to the outside air. RECOMMENDATIONS: 5. To protect the wildlife from light, noise, and movement of vehicles and persons inside or on the roof of the garage, and yet provide for air dispersion, the lower levels of each garage deck shall be a minimum of 55 percent open to the outside. The side facing the heronry, however, must be screened to control light and glare. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D. 6. To provide air dispersion, and protect the wildlife from the distraction of vehicles and persons, the applicant shall construct the garage so that the top level is open to the sky with landscaping or design elements for reduction of light and glare. The north exterior wall must restrict light, glare, noise and movement, substantially removing them from impacting the heronry. Landscaping and plantings shall be used to accomplish screening on the remainder of the roof. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D.; City of Renton Green River Valley Policies Plan I.C.8. 7. To protect the wildlife from impacts and yet allow for air circulation, the applicant shall ensure that exits from the garage shall be on the sides of the structure furthest away from the heronry. 5 05/28/91(MITDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D.; City of Renton Green River Valley Policies Plan I.C.8. E. SURFACE WATER MOVEMENT The EIS notes that the primary impacts of the proposed projects on Tract B would result from the increase in impervious surface and the resulting change in runoff volume and timing. Runoff is proposed to be routed through biofiltration swales to the P-1 Pond. Due to excess capacity of the P-1 channel, 'significant impacts to the pond from the additional flows are not anticipated. However, tl4e City will review detailed drainage plans and any previous agreements regarding discharge from the Corporate Plan properties to the P-1 pond during the site plan approval process. The P-1 channel and pond were constructed on land dedicated to the City by First City Development Corporation. The po �d and channel are regional detention/retention facilities, used for flood control for the Green River Valley area. The management of this area, (e.g. water levels, plantings, sediment dredging) affects the regional flood control, surface water volumes, vegetation onli site, and wildlife in the area. Three entities are involved in the management of the area; the Soil Conservation Services (SCS), King County Surface Water Management Division, and the City of Renton. Adjacent shoreline owners also affect the management of the pond. First City Development Corporation is one of these owners. NOTE TO APPLICANT: In order to address surface water impacts, the applicant must comply with City of Renton Public Works Drainage requirements and construct in a manner consistent with the recently adopted IGng County Surface Water Design Manual. The applicant must calculate runoff volumes from the site, prepare a Level I downstream analysis and design the swales, usi �g methods outlined in the Surface Water Design Manual. In order to address detention/retention compliance on Tract B, the City will review the need for a wet pond system prior to discharge of runoff to the P-1 Pond based on review of existing agreements as part of the site plan approval. RECOMMENDATIONS: 8. In order to reduce surface water impacts, FCDC or subsequent owners, along with the City, Metro, King County, SCS,and other abutting landowners shall participate in the preparation and implementation of a management plan for the P-1 Pond, under the leadership of the City of Renton, as defined in Section 3.4.1 of the final EIS. Nexus: City of Renton Environmental Review Ordinance (4-6-22), Surface and Storm Water Drainage Ordinance; City of Renton Municipal Code (4-22); City of - Renton Comprehensive Plan'I.A., I.C., I.G., I.H., I.I.; City of Renton Green River Valley Plan I.C.4. SIGNIFICANT UNAVOIDABLE ADVERSE IMPACTS: Even with best management practices and required surface water run-off plans, the volume of stormwater runoff from Tract B will increase with development. The Level I downstream analysis required by the City will determine impact of that increase. Cumulative impacts to the pond from adjacent land uses and downstream land uses are expected. 6 05/28/91(MITDOCB) F. SURFACE WATER QUALITY The EIS notes that Tract B is adjacent to the P-1 Pond, Springbrook Creek, and a remnant of the old Black River channel. The primary construction related impact would be the import and placement of large amounts of fill. The potential for erosion is greatest along the eastern portion of the site where fill would be placed adjacent to the old Black River Channel and the western portion of the site adjacent to Springbrook Creek. Depending on weather conditions, and water level in the channels, some sediment could be carried to the P-1 Pond. Following construction, water quality impacts would result primarily from pollutant associated with vehicles and landscaping activities. Both the wetlands in the old Black River Channel and the P-1 Pond could be impacted. Hydrologic mitigation measures would be determined as part of the City's review of the detailed drainage plans for the project. Biofiltration swales, oil/water separators and other measures associated with the Storm Water Design Manual would be implemented. RECOMMENDATION: 9. In order to reduce surface water impacts,the applicant shall prepare and submit a conceptual Erosion Control Plan to the City, as specified in the Draft and Final EIS (Section 3.4.2 Mitigation Measures) prior to issuance of construction permits. Based on this conceptual plan, additional mitigation measures will be defined by the City during site plan review. At a minimum: the applicant shall install and maintain oil/water separators; and install biofiltration swales per City and WSDOE requirements and recommendations. Based on City review of the drainage plan, the applicant may be required to treat runoff from paved ares in a wet pond prior to discharge to the P-1 Pond. As mentioned under Water Quality, the applicant shall participate in the management plan for the P-1 as defined in Section 3.4.1 of the Final EIS. A final erosion control plan shall be submitted prior to issuance of construction permits. Nexus: City of Renton Land Clearing Ordinance (4-9); Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.H., I.F., I.J., I.A.; Green River Valley Policy Plan I.C.4.; Surface and Storm Water Drainage(4-22) UNAVOIDABLE ADVERSE IMPACTS: Even with the use of swales, wet ponds and implementation of an erosion control plan, 20-40 percent of suspended solids and metals, 17 to 33 percent of oil and grease, and 15 to 100 percent of the nutrients originating from the project site, as with all project sites,will eventually enter the receiving water. G. VEGETATION The draft and final EIS present a list of plant species occurring on the site. Tract B consists of mature black cottonwood trees, some of which are approximately 100 to 130 feet in height, alder, an extensive shrub zone of Scot's broom, grass, and emergent wetland vegetation associated with the old Black River channel. Under the proposal, approximately 10.8 acres would be converted to a developed site. None of the species or 7 05/28/91(MITDOCB) the vegetative types on Tract B are considered sensitive, threatened, or endangered in Washington. However, the vegetation does provide habitat for wildlife. The mature cottonwood trees provide some screeni ig of the site from the heronry. RECOMMENDATIONS 10. In order to reduce the impact of vegetation removal and provide screening, the applicant shall participate with the City of Renton, Metro, King County and SCS in a shared-cost coordinated existing planting program for the portion of the shorelines of the P-1 Pond and Springbrook Creek along Tract B. Nexus: Shoreline Master Program; City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A.; Valley Plan I.C.4., I.C.8. 11. In order to reduce the impact of human intrusion and mitigate the loss of vegetation, the applicant shall plant deciduous trees and shrubs (on the applicant's and City-owned property between the shorelines of the P-1 Pond and Springbrook Creek and the berm in Recommendations 15 and 16), to provide additional screening, visual and biological diversity, and wildlife habitat using species identified in Section 3.5.1 of the Final EIS. The plantings shall be integrated with the existing vegetation on the side slopes between Tract B and the P-1 Pond. Planting plans shall be submitted to the Development Services Division of the Planning/Building/Public Works Department during site plan review. This buffer shall be provided before major site preparation or construction activities occur. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 12. The applicant shall increase the setback distance on Tract B from 450 specified in the FEIS to 600 feet from the heron colony for all new development. (This will result in the retention of an additional 1.5 acres of native vegetation, thereby reducing the permanent loss of habitat to 9.3 acres.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E.f I.A.,Valley Policy Plan LB 13. In order to mitigate the loss of 10.8 acres of vegetation and wildlife habitat, the applicant shall plant native lowland trees and shrubs between the FDCD property line and the 600 foot setback, on all lands not covered by Measure 11 using the species specified in Section 3.5.1 of the Final EIS. This buffer shall be provided before major site preparation or construction activities occur and must be • approved by the Development Services Division of the Planning/Building/Public _ Works.Department. The landscape plan for this element shall be submitted to the DSD during site plan review. The applicant shall not grade or construct until the plan is approved and implemented. Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., I.J.;Valley Plan I.C.4., I.C.8. 14. In order to mitigate the loss of vegetation, the applicant shall submit a landscape plan for the entire site for site plan approval, excluding the area discussed in 8 05/28/91(MITDOCB) Recommendation 10, 11, 12, and 13. Submitted by the time of construction permit, it shall include a detailed planting plan and specifications to mimic native plant community composition and structure. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. Nexus: Land Clearing (4-9); Landscaping; City of Renton Environmental Review Ordinance (4-6-22); Valley Plan I.C.4.; City of Renton Comprehensive Plan I.D., I.E., I.A. 15. In order to reduce the impact of vegetation removal, human intrusion and to create wildlife screening, the applicant shall construct, within and along the 600 foot setback from the nearest heron nest tree (in the main heronry) on Tract B, a benched 10-foot high earthen berm and trail and vegetate with a 20 foot tall view obscuring screen of native evergreen trees and native shrubs in a double staggered planting row. Berm and tree height are intended to achieve a 30 ft. screen. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (See Figure 3-1, 3-2 FEIS.) This condition must be implemented before any building construction. Nexus: Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6- 22); City of Renton Comprehensive Plan I.D., I.F, I.A. 16. In order to mitigate for vegetation removal and to provide additional wildlife screening between the Tract and the P-1 pond and channel, the applicant shall construct a five foot high earthen berm and trail along the remainder of the shoreline (not covered in Measure 15) along Springbrook Creek and the P-1 Pond. The applicant shall provide a visual buffer between the heron rookery and development by spacing six to eight foot view-obscuring evergreen trees and shrubs on the berm benches in a double staggered planting row (see mitigation measures defined in Section 3.5.3 of the FEIS) prior to further construction or grading. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (See Figure 3-1,3-2 FEIS.) Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A., I.C., III.C., III.D.;Valley Plan I.C.8. 17. In order to reduce the impact on vegetation, the applicant shall ensure optimal plant survival and plant growth on all site landscaping by requiring irrigation and maintenance on FCDC property. The applicant shall present a surety device of 10 percent of the value of all new landscaping materials for a minimum of five years for irrigation and maintenance, to Development Services Division of the Planning/Building/Public Works Department and the City Attorney. Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance(4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.C., I.A. 18. The applicant shall, in order to preserve wildlife habitat and screening, submit a landscaping plan to maintain all the mature cottonwoods, specifically along the historic Black River channel, at the northern portion of the site, and on other portions of the site (e.g., near the south portion of the site). Mitigation for loss of 9 05/28/91(MRDOCB) trees shall be identified In the Landscape Plan which shall particularly focus on additional buffering and screening vegetation for any such loss. Any substantial alternative of existing screening must be replaced before development can continue. (See Ordinance No.4219.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Land Clearing and Tree Cutting Ordinance (4-9); Site Plan Review Ordinance (4-31-33), City of Renton Comprehensive Plan I.A1, I.C., I.D., I.E;Valley Plan I.C.8., I.B. 19. The applicant shall plant additional native shrubs and trees along the western boundary of Tract B in the area designated as "a potential heron flight zone," to reduce the impact of human intrusion in this critical area prior to any substantial construction or grading. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscaping Ordinance (4-31-34); Land Clearing&Tree Cutting Ordinance (4-9) UNAVOIDABLE ADVERSE IMPACTS: The proposed action would result in the permanent loss of 9.3 acres of vegetation on Tract B with mitigation measures. H. WETLANDS The impacts of the proposal would include the loss of 0.04 acres of wetland which would be filled for office buildings and parking areas. No fill would be placed in the Black River channel wetland under the proposal or alternatives. However, the channel's use as a biofiltration swale would change the composition of vegetation due to the increase in the amount of water in the system. Also, vifithout buffers, this area could be shaded from the buildings and would therefore, be expected to have vegetative changes due to the shading. RECOMMENDATIONS: 20. The applicant shall, in order to protect an existing wetland from human and vehicular intrusion, establish a buffer around the old Black River channel wetland averaging 50 feet in width with no part being less than 25 feet in width. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E;Valley Plan I.C.8. 21. The applicant shall, in order to mitigate the loss of wetlands elsewhere on the site, create new or enhance existing the wetlands adjacent to the old Black River channel on Tract B. This shall be done by submitting a Wetland Enhancement _ Plan to the Development Services Division of the Planning/Building/Public Works Department prior to the public hearing on site plan. Final plans must be approved before the issuance of any permits for substantial development, including site .- - preparation on this tract. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E;Valley Plan I.C.8. 10 05/28/91(MITDOCB) 22. The applicant shall develop and implement a drainage plan with biofiltration prior to discharge of runoff into the wetland. A conceptual plan shall be approved by the Storm and Surface Water Utility prior to Site Plan review. Final plans must be approved prior to issuance of site preparation/construction permits. Nexus: Surface & Storm Water Drainage Ordinance (4-22); City of Renton Environmental Review Ordinance(4-6-22) WILDLIFE RESOURCES The EIS presents a list of birds, mammals,amphibians, and reptiles observed or potentially occurring in the project area, including the P-1 Pond and the adjacent riparian areas. Thirty-six species of mammals are known to occupy habitat similar to that which occurs in the vicinity of the project area. Six species of mammals, or their signs, have been observed on the project site or in the immediate vicinity. As many as 85 species of birds, as well as 19 species of reptiles and amphibians, may occur in the vicinity of the project area. Small mammal trapping was carried out on Tract A and B during July 2-4, 1990. Six deer mice were trapped on Tract B (during 30 trap nights) and one on Tract A (during 48 trap nights). This indicates a lower population of rodents on Tract A due to the sparser vegetative cover and duff layer on it. RECOMMENDATIONS: 23. The applicant shall revise their site plan to show an increase in the setback distance on Tract B from the heron colony to development from 450 feet as defined in the DEIS to 600 feet, in order to reduce the intrusion of human and vehicular activity on the heronry. This revision must be submitted at the Site Plan review stage. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan 1.D.; I.E; I.A., Valley Plan I.C.8. 24. In order to mitigate the loss of vegetation and habitat,the applicant shall develop a detailed planting plan for the entire site with specifications which mimic native plant community composition and structure by the time of construction permit approval. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. (Same as Measures 10, 11, 13 and 14.) Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22);Valley Plan I.C.4.; City of Renton Comprehensive Plan I.D., I.E., I.A., I.J., I.C., I.G.;Shoreline Master Program 25. In order to mitigate the loss of 10.8 acres of vegetation and wildlife habitat, the applicant shall plant native lowland trees and shrubs between the FCDC property line and the 600 foot setback using the species specified in Section 3.5.1 of the Final EIS. This buffer shall be provided before major site preparation or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. The landscape plan 11 05/28/91(MRDOCB) for this element shall be submitted to the DSD during site plan review. The applicant shall not grade or construct until the plan is approved and implemented. (Same as Measure No. 13.) Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., I.J.;Valley Plan I.C.4., I.C.8. 26. In order to reduce the impact of vegetation removal, human intrusion and to create wildlife screening, the applicant shall construct, within and along the 600 foot setback from the nearest heron nest tree (In the main heronry) on Tract B, a benched 10-foot high earthen berm and trail and vegetate with a 20 foot tall view obscuring screen of native evergreen trees and native shrubs in a double staggered planting row. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any furthe construction or grading occurs. (Same as Measure 15.) Nexus: Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6- 22); City of Renton Comprehensive Plan I.A., I.D., I.C., I.E.;Valley Plan I.C.8. 27. In order to mitigate for vegetation removal and to provide additional wildlife screening between the Traci and the P-1 pond and channel, the applicant shall construct a five foot high earthen berm and trail along. the remainder of the shoreline (not covered in Measure 16) along Springbrook Creek and the P-1 Pond. The applicant shall provide a visual buffer between the heron rookery and development by spacing six to eight foot evergreen trees and shrubs on the berm benches in a double staggered planting row of evergreen fir trees (see mitigation measures defined in Section 3.5.3 of the FEIS) prior to further construction or grading. The requirement nj ust be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (Same as Measure 16.) Nexus: Land Clearing (4-9);Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22);City of Renton Comprehensive Plan I.D., I.E., I.A., I.C., III.C., III.D.;Valley Plan I.C.8. 28. In order to reduce the impact of the site on adjacent wildlife, the applicant shall provide access through the tract on the new trail running along the top of the berm from Naches Avenue SW through the Tract and out to Oakesdale Avenue SW again. (See Measure 16.) Nexus: City of Renton Comp Parks Plan; City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.H. _ 29. The applicant shall construct a fence between the trail established in Measures 26 &27 and Springbrook Creek and P-1 Pond to prevent human intrusion into wildlife habitat areas. Plans for these improvements shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to issuanc of site preparation/construction permits. I Review Ordinance 4-6-22 ; Cityof Renton Nexus: City of Renton Environmental ( ) Comprehensive Plan I.A., I.H., I.I., I.J., I.K.;Valley Plan I.C.8. 12 05/28/91(MITDOCB) 30. In order to reduce human intrusion into wildlife habitat areas along the edges of the P-1 pond, the applicant shall provide for the installation of gated barriers on the City-owned maintenance roadway easement, perpendicular to the easements. The barriers shall be installed at the east and west access points of the roadway. Future maintenance will be the responsibility of the City of Renton. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.H., I.I., I.J., I.IC;Valley Plan I.C.8. 31. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with nonglare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectively. Nexus: Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4- 31-34);Valley Plan I.C.8.;Comprehensive Plan I.A., I.D. • UNAVOIDABLE ADVERSE IMPACTS: Loss of 9.3 acres of wildlife habitat on Tract B. In addition, there will be a short term disturbance to wildlife during the construction phase of the project. J. UNIQUE TERRESTRIAL RESOURCES (Great Blue Herons) The EIS notes that guidelines have been presented to reduce the impact on the Great Blue Heron Colony present in the riparian area north and east of Tract A and north of Tract B. The guidelines have included setbacks, berms, plantings, reduced construction scheduling and phasing, reduced building heights, hooded windows, building colors and monitoring. These measures are listed in detail below. However, while these measures are prudent, public precautions, it is not clear whether they will be sufficient to mitigate the construction and operational aspects of the proposal on the herons. Monitoring programs, provided as part of this document, will provide added scientific evidence of the success or failure of the measures. Adjustments can then be made based on these empirical observations. It is not possible to completely avoid impacting the herons, their flight patterns, their foraging areas, and their nesting seasons unless no development were to occur. Their tolerance to increased human intrusion is not known. RECOMMENDATIONS: 32. The applicant shall, in order to buffer the wetlands and the heron, increase the setback distance on Tract B from the heron colony(along a radii from nearest nest tree)to development from 450 feet as shown in the Final EIS to 600 feet. In order to minimize the impacts on the wildlife,the applicant shall establish this as a no intrusion zone, e.g., no parking, building or accessory use, except for required plantings maintenance, for this portion of Tract B lying within 600 feet of the nearest heron nest tree. The applicant shall submit a site plantings plan (established in Measures 10, 11, 12, 13, 14, & 15). All planting or other activity shall comply with the time limitation set forth for construction activity within 800 feet of the heron colony. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton • Comprehensive Plan I.A., I.C., I.D., I.E.;Valley Plan I.C.8. 13 05/28/91(MRDOCB) 33. The applicant shall either: 1) ipstall a 10 foot high earthen berm as previously required for Tract A or 2) backfill to the wall of the parking garage to a bermed height of 10 feet, (in order to incorporate the trail and viewing platform) and then vegetate either improvement with minimum 20 foot tall view obscuring screen of evergreen trees and native shrubs in a double staggered planting row. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs The applicant shall submit a landscape plan for these improvements to the Development Services Division prior to site plan approval. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.; I.D.,VII.H 34.,. The applicant shall, in order to buffer the unique Terrestrial Species, limit Tract B buildings to four-stories (57 feet) between 600 and 800 feet back from the heron colony and five-stories(71 feet)I beyond 800 feet. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33), City of Renton Comprehensive Plan I.A.; I.D.; I.E; I.J, Valley Policy Plan 1.13 35. The applicant shall, in order to buffer the heron and wildlife, do major outdoor construction on the berm and landscaping on only one of the three proposed Tract B buildings - either D, E or F - during the first construction season (during the period from July 1 to Febr ary 1). After the first year,the parking garage may be constructed in phases, if d sired, with interim parking provided on Tract A as necessary during the remaind r of the construction seasons. After the first year, the two remaining buildings m y be constructed. Nexus: City of Renton Enviro mental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E;Valley Plan I.C.8. 36. The applicant shall, in order to preserve wildlife habitat and screening, submit a landscaping plan to maintain all the mature cottonwoods, specifically along the historic Black River channel, at the northern portion of the site, and on other portions of the site (e.g., nea l the south portion of the site). Mitigation for loss of trees shall be identified in the Landscape Plan which shall particularly focus on additional buffering and screening vegetation for any such loss. Any substantial loss of existing screening must be replaced before development can continue. (See Ordinance No.4219.) (See Measure 18.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Land Clearing and Tree Cutting Ordinance 1(4-9); Site Plan Review Ordinance (4-31-33), City of - Renton Comprehensive Plan I.A., I.C., I.D., I.E;Valley Plan I.C.8., I.B. 37. The applicant shall plant additional native shrubs and trees in a linear buffer along Springbrook Creek in the area designated as the heron flight zone in order to provide further screening for this sensitive wildlife area. This is fully described in Measure 19. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Land Clearing and Tree Cutting Ordinance (4-9); Site Plan Review Ordinance (4-31-33), City of Renton Comprehensive Plan I.A., I.C., I.D., I.E;Valley Plan I.C.8. 14 05/28/91(M1TDOCB) 38. In order to ensure that adequate information is available on the impact of the building on the heron, the applicant shall provide a monitoring plan for the construction and post-construction period. The plan shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to the site plan public hearing. This monitoring plan shall include the following: a. An element to monitor the effects of construction activities on nesting Great Blue Herons. This element of the plan shall be developed in consultation with the Washington Department of Wildlife; b. An element providing a process for the establishment of a monitoring committee, comprised of individuals knowledgeable in the area of wildlife preservation issues. It shall be formed prior to the issuance of grading and building permits to develop and implement the monitoring plan. The committee shall consist of a representative from the applicant, the City of Renton, and the public. The Washington Department of Wildlife shall have an advisory role to ensure that the monitoring effort is consistent with any other heron monitoring programs in the region; c. An element providing for committee review of monitoring to be done by a professional biologist. Monitoring results for the period from January 1 to June 1 of each construction season will be presented to the. Environmental Review Committee in an interim report. The results will be used to determine if there is a need for additional mitigation measures such as additional screening of construction or alterations in construction timing, methods, phasing, screening, or location of development; as well as whether construction time limits, phasing,screening or other mitigation may be modified or eliminated based upon evidence that the heron colony is inactive for that particular season. Such determination could be made by June 1 of each year. The berm, however, shall not be subject to elimination under this condition. d. An element providing for committee report on the monitoring results. The results of the monitoring period (January 1 to December 31), and the Committee's report shall be in an annual report to be presented to the City of Renton's Environmental Review Committee for their consideration. The annual report will describe the condition of the heron colony, present the results of monitoring and impacts of construction (vis-a-vis other factors such as weather conditions, availability of food resources and other regional factors,and comparison to similar urban colonies); e. An element establishing ERC's ability to act on the annual report. The annual report shall be used by the Environmental Review Committee (ERC) to determine the need, if any, for additional mitigation measures _ such as enhanced buffering and/or screening of construction activities, noise mitigation, and alterations in construction timing, methods, or location of development activity; as well as whether construction time limits, phasing, screening or other mitigation may be modified or eliminated based upon evidence that the heron colony is inactive. 15 05/28/91(MITDOCB) NOTE: Results of first year monitoring may also be used by the ERC to determine allowable construction activity (i.e., the number of buildings/parking structures to be built at any one time) for the ensuing construction period after the first year. f. Monitoring and annual reports shall continue for at least one year after completion of all project construction as determined by the City's Environmental Review Committee. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E.;WAC 197-11-768 39. In order to minimize impacts on the wildlife, the applicant shall limit the height of buildings to 57 feet (four stones) between 600 and 800 feet and to 71 feet (five stories) beyond 800 feet from Ithe heron colony on Tract B. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 40. In order to minimize the impacts on the herons and other wildlife, the applicant shall do interior work (rough-in mechanical and electrical, interior shell finish, glazing,and tenant improvements) at any time once the berms, building shells and window hoods have been installed. The applicant shall complete landscaping (as specified below) immediately after, or in conjunction with, or after, the construction of the buildings. - I Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 41. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize thle visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing. Nexus: city of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C.I, I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 42. In order to lessen impacts on wildlife, and particularly birds, the applicant shall • construct the buildings with non-glare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectivity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); Valley Plan I.C.S.; City of Renton Comprehensive - - Plan I.A., I.D. UNAVOIDABLE ADVERSE IMPACTS: -- Unavoidable adverse impacts will include changes in heron flight patterns to and from the heron colony, occasional disturbance to herons (feeding and movements) during construction and during day-to-day use of the buildings and parking areas. 16 05/28/91(MITDOCB) K. NOISE The EIS notes that a number of noise sources exist in the vicinity of Tracts A and B, including vehicular noise along nearby roadways and 1-405, intermittent noise associated with warehouse and industrial uses south of the site such as the Metro Wastewater Treatment Plant; low flying aircraft;occasional rail activities north of the site;and office and other construction east of the rookery. General use of the site would also create noise from mechanical units of the buildings, cars coming and leaving the site,and general intensified human use and activity. In addition, cumulative noise impacts may also be of concern, although data is not available at this time. As EISs for future projects are completed, additional noise data will be available. Mitigation proposed for this project concentrates on impacts from this project alone. In addition, scientific research has not adequately covered the response of herons and other wildlife to noise impacts through their life cycles. Therefore, it is prudent for the city to condition the development in an effort to reduce noise as much as possible. RECOMMENDATIONS: 43. The applicant shall ensure that the garage design incorporates reasonable noise attenuation measures including, but not limited to sound absorbing baffles, interior partitions that divert noise away from the heronry, and signage asking motorists not to sound their vehicle's horn in the garage. To the extent possible, the applicant shall design the garage to promote natural ventilation instead of mechanical, in order to reduce noise impacts. Although air quality must be addressed, the applicant shall provide air quality solutions that do not cause undue noise impacts. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E 44. In order to reduce noise impacts, the applicant shall restrict outdoor construction activities to week days and to the hours of dawn to dusk during the summer and fall months and 7:00 a.m.to 6:00 p.m.during the winter and spring months. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.;City of Renton Comprehensive Plan I.B. 45. In order to reduce noise impacts, the applicant shall ensure that all construction equipment has sound control devices no less effective than those provided on the original equipment (e.g., equipment mufflers and noise shrouds are intact and operational). Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.;City of Renton Comprehensive Plan I.B. 46. The applicant shall, in order to control noise, provide a noise education program for operators of excavation equipment and haul trucks. The program shall discourage wide open throttles, compression release brakes, and provide incentives for operators using noise suppression methods such as shutting off equipment when not in use. 17 05/28/91(MRDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.;City of Renton Comprehensive Plan I.B. 47. The applicant shall, in order to reduce noise impacts, erect a temporary noise barrier around loud equipment. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.,;City of Renton Comprehensive Plan I.B. 48. In order to reduce construction noise, the applicant shall require contractors to use electrically driven equipment rather than pneumatically driven machines, whenever possible. i Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.;City of Renton Comprehensive Plan I.B. 49:; In order to reduce noise impacts, the applicant shall certify, in writing to the Development Services Division of the Planning/Building/Public Works Department prior to commencing site preparation or construction activity, that all construction equipment comp ies with pertinent equipment noise standards of the U.S. Environmental Protection Agency. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. NOTE TO APPLICANT: The applicant must comply with the City of Renton's noise ordinance,Zoning Code Title 8, Chapter 7, Health and Sanitation. 50. In order to reduce noise imp cts on wildlife, the applicant shall use auger cast-in- place piling construction in lie of conventional pile driving. Nexus: City of Renton Envir nmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. 51. In order to minimize the im act of construction noise on nesting herons, the applicant shall exclude major outdoor construction activities within 800 feet of the heron colony during the period from February 1 to July 1 (Section 3.5.4 of FEIS).. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D.; Green River Valley policy Plan I.C.8. 52. In order to minimize the impact of noise on herons and other wildlife,the applicant shall soundproof and locate all noise-generating units such as air conditioning units in areas which will minimize the effect on wildlife. - Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D. UNAVOIDABLE ADVERSE IMPACTS: With all mitigation in place, noise would result from construction activities and, to a lesser degree,from occupation and use of the site following construction. 18 05/28/91(MRDOCB) L HAZARDOUS WASTE No contaminated dredge spoils are known to have been placed on Tract B and,therefore, no mitigation is necessary. M. RELATIONSHIP TO PLANS,ZONING AND SHORELINES For the most part, Tract B is consistent with the Comprehensive Plan. However,the Phase III proposed seven-story building would not be in keeping with the land use police 1.13 of the Green River Valley Policy Plan that offices and other structures be low rise buildings. In the surrounding area, other office buildings range in height from one to four stories. Hence,a seven-story building would not qualify as low rise nor would it be in harmony with surrounding buildings. However, the Metro Treatment Plant, directly south of Tract B, is undergoing environmental review for an expansion of its present treatment capacity of 72 million gallons per day to 108 mgd for projected year 2005 flows. Possible expansion beyond year 2005 flow levels are also anticipated. The new Metro facilities would be visible from the upper stories of the buildings on Tract B. During the construction period for wastewater improvements, high odor generation is possible. Although the Metro project will provide screening and odor control, it is unlikely that all impacts can be mitigated. These impacts are, clearly, not from the Black River Corporate Park, Phase VII and VIII proposal. Therefore, this project cannot mitigate. The Metro project will be required to mitigate its own impacts. However, the City of Renton believes that proper siting, design and buffering on the Metro site and the Black River site will reduce impacts for both projects. 53. The applicant shall reduce the size of the seven-story building on Tract B to a height not to exceed five stories. This "mid-rise"height will still be greater than the de facto low rise" building height policy in the Green River Valley Plan, but will be more in keeping with surrounding building heights. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33); Green River Valley Plan 54. In order to reduce visual impacts from the adjacent Wastewater Treatment Plant, the applicant shall ensure that the multi-stories buildings on Tract B are oriented away to the greatest extent possible. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33); Green River Plan I.C.8. POTENTIAL UNAVOIDABLE ADVERSE IMPACTS: The Metro Wastewater Treatment Plant DEIS states that even with Metro's proposed odor control plan, offensive odors may be generated from the treatment facility and extend beyond the boundaries of the site. These odors could occur as part of the sewage treatment plant's day-to-day operations and, but most likely, would occur from mechanical failures, emergencies, or system upsets. These odors have the greatest potential for crossing Tracts A and B when the prevailing winds are from the south and southwest. 19 05/28/91(MRDOCB) N. LIGHT AND GLARE Proposed actions from both Tracts A land B would require outdoor lighting for parking, sidewalks,and access roads, and indoor lighting for office space, hallways and foyer. The EIS notes that lighting for parking areas will be low level light, not visible from off site. The source of light from automobiles, potentially of greater significance, can be screened from the rookery through the use of dense foliage. Building lighting, of a diffused source, should also not adversely impact heron nesting some 600 feet or more away. Of greater concern is visible human activity within,these buildings. RECOMMENDATIONS: 55. To reduce the intrusion of lighting to areas where it is not desirable, the applicant shall use down light standards. Multiple standards at lower height are preferred to taller standards with greater dispersion characteristics. Areas within 200 feet of the P-1 Pond or 600 feet of the Great Blue Heron rookery shall not have artificial illumination. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.; Valley Plan I.C.8. 56. The applicant shall submit landscape plans prior to site plan review to the satisfaction of the Development Services Division of the Planning/Building/Public Works Department providing sufficient dense evergreen vegetation along earthen berms,as well as a part of the!I landscape plan for the parking area so as to reduce headlight glare from automobiles. The applicant shall have landscape plans approved by the Development Services Division of the Planning/Building/Public Works Department for the following: a) dense evergreen vegetation along earthen berms, and b) the landscape plan for the parking area with the goal of reducing headlight glare from automobiles, prior to the site plan public hearing, consistent with Measures 10, 11, 12, 13, 14, 15 and 16. Nexus: Landscaping Ordinance(4-31-34); City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 57.. In order to reduce disruption'caused by visible human activity, the applicant shall screen all windows facing, and within 800 feet of the heronry and located above the 30 foot tall tree/berm or the parking garage, with hoods or screens which substantially block heron views of human activity, particularly at dusk or night from the rookery. Hoods or screens may be removed once trees of sufficient height and density have grown above the height of the hooded windows. NOTE: The applicant is advised to consult with the Fire Department on the design and flame dispersion characteristics of hoods or screens before they are installed. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A, I.D.i Valley Plan I.C.8. 20 05/28/91(MITDOCB) 58. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing, consistent with Measure 40. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.B. UNAVOIDABLE ADVERSE IMPACTS: The buildings and parking proposed for Tract A and B would result in the increased nighttime light from buildings and parking, as well as headlight glare from automobiles, not all of which can be fully mitigated. 0. HISTORIC AND CULTURAL Because of the comprehensive archaeological investigations that were previously completed on the site, analysis of cultural and archaeological resources was not identified as a scoping issue by the City of Renton and not included as a part of this EIS. Please refer to the Draft and Final EISs for Earlington Park (City of Renton 1980; 1981) and the final report prepared by James Chatters for further information on this topic. P. TRAFFIC The EIS notes that the Traffic Impact Analysis for Valley 405 Business Park utilizing the Grady Way Corridor Transportation Improvement Study, shows that the trip generation of 5,180 vehicular trips per day from both Tracts A and B would be 30-35 percent less than those assigned in the Grady Way corridor study model for which the developer provided mitigation. The project will, however, increase air quality impacts through the introduction of numerous car trips to the area. These are discussed in the Air Quality section, for both Tracts A and B. Other projects proposed for the area will also impact the surrounding streets. The proposed Metro Wastewater Treatment Plant Expansion (see DEIS for this project) and the proposed Rabanco Waste Reduction Facility (DEIS forthcoming) may combine with this project's traffic and existing traffic to reduce Levels of Service at several intersections and increase peak hour counts. Construction traffic from these three projects may also occur during the same timeframe, i.e., 1991-1996. Cumulatively, the impacts of this increased traffic could be significant, however, all impacts have not yet been compiled for the other projects. It is possible that mitigation measures will have to be coordinated between these projects, if all are constructed. RECOMMENDATIONS: 59. In order to address potential cumulative impacts, the applicant shall prepare a Construction Transportation Plan which addresses possible construction traffic conflicts with the Metro Wastewater Treatment Plant and the Rabanco Waste Recycling Plant during their construction and possible solutions prior to site plan review (or prior to the issuance of site preparation and/or building permits). The plan should consider the common use of a construction staging areas and construction phasing to reduce impacts. The plan shall be approved by the City of Renton Development Services Division. 21 05/28/91(MITDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 60. In order to address traffic impacts, the applicant shall review, revise and implement the existing TMP for Black River Corporate Park to increase its effectiveness. These revisions shall include evaluation of goals identified in the TMP (a reduction of 10 percent of SOV trips) within two years following building occupancies. The plan must be approved by the City, with Metro Transportation Section review before occupancy of any building. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to address t rIffic impacts, the applicant shall submit a report to the City showing the results of the TMP evaluation formulated in the above mitigation measure. If targeted goals are not met within two years, additional incentives for HOV participation shall be installed (i.e., establishment of a vanpool operation). The incentives shall include parking fees, the purchase of vans for vanpools, and a guaranteed ride home program. The subsidy shall continue until the 10 percent goal is reached. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady WayTBZ;Cityof Renton Comprehensive Plan VII;Valley Plan I.C.5. I p In order to reduce the traffic impacts, the applicant shall agree to provide an agreement acceptable to the City Attorney to provide a free one month bus pass to all new employees (on a five employee per 1,000 sf basis) at the time of each new tenant occupancy in any of the buildings as a part of their TMP. The passes should be for peak hour, two zones, maximum requirement. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to address t affic impacts, the applicant shall, as a part of their •t?; TMP, agree to distribute site-appropriate transit and ridesharing information to new tenants and annually to all tenants. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to display site-appropriate transit and ridesharing information in prominent public locations. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to appoint a Transportation Coordinator to promote and coordinate the use of public transportation and high occupancy vehicles. 22 05/28/91(MITDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic impacts of the project, the applicant shall, if the 10 percent rideshare is not met, design and implement a guaranteed ride home program for registered vanpool users. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to reduce the traffic impacts, the applicant shall design and implement a parking management program which provides preferential parking for high occupancy vehicles. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic impacts, the applicant shall ask tenants to promote an alternative work hour program in order to reduce peak hour trips. Nexus: City of Renton Environmental Review Ordinance (4-6-22);. Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. - In order to address the impacts of traffic, the applicant shall establish a performance goal for high occupancy vehicle use. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the impacts of traffic, the applicant shall conduct transportation surveys/monitoring to determine participation and interest • in HOV and bus transportation. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the impacts of traffic, the City and the applicant shall review the Grady Way Transportation Study to determine the option for crediting the applicant for previous improvement contributions. Based on earlier contributions and trips expected from this development, the applicant shall pay$592,790 for 3,487 trips not previously mitigated under earlier contributions. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 61. In order to reduce traffic impacts, the applicant shall ensure that truck and wheel washing must be accomplished on-site after each haul trip. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. 23 05/28/91(MITDOCB) NOTE: As required by City of Renton ordinance, the applicant shall abide by hauling hours for large construction vehicles to 7:30 a.m. between 8:30 a.m. and 3:30 p.m. and after 6:30 p.m. NOTE: In order to reduce the impacts of traffic, the applicant shall ensure that large construction vehicles shall follow prescribed haul routes. These routes shall be conceptually formulated and submitted at site plan review. The final routes shall be approved by the City of Renton prior to the issuance of construction permits. Nexus: City of Renton Envi onmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Compreh nsive Plan VII;Valley Plan I.C.5. UNAVOIDABLE ADVERSE IMPACTS The unavoidable adverse traffic imp cts associated with these developments will be defined in these other upcoming pro ects'draft EISs. Q. PARKS AND RECREATION The site presently provides passive re,reational opportunities for workers in nearby office buildings and the general public. Bi d-watching, jogging, and walking are the primary uses. If the site is developed, public ccess to the area would be limited, and the loss of wildlife habitat would reduce some of the passive recreational values of both Tract A and B. it RECOMMENDATIONS: 62. To mitigate the need for additional recreation and displaced opportunities on site, the applicant shall construct pedestrian trail from Oakesdale Avenue along the earthen berms adjacent tote P-1 Pond according to EIS specifications. The applicant shall provide lands ping and screened viewing areas for the passive user as specified. The appli nt shall continue the trail east to Naches Avenue ;I and reconnect with the sidewalk system at this point (see Fig. 3-1, 3-2 and 3-3 FEIS). The maintenance of these areas shall be the responsibility of the property owner into perpetuity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Comprehensive Parks Plan; City of Renton Comprehensive Plan VII.H, I.A. I� 63. To address the loss of recreational use and the site's proximity to wildlife, the applicant shall provide an easement or dedication with terms satisfactory to the City, ensuring year-round public access to and along the pedestrian trail. The trail shall be screened from the P-1 Pond by vegetation. A fence shall be provided between the P-1 Pond and the trail to limit human intrusion into the wildlife area. This easement shall be provided prior to the issuance of any site preparation and/or building permits for development on either Tract A or Tract B. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Comprehensive Parks Plan; City of Renton Comprehensive Plan VII.H R. CUMULATIVE IMPACT The continued conversion of land in the area to office park and industrial uses will result in the following cumulative impacts: 24 05/28/91(MITDOCB) Soils will be disturbed and moved onto and off development sites; erosion will occur and silt and sedimentation can be expected to increase in the P-1 Pond. Wetlands may continue to be lost; air quality is expected to decline with these projects increasing incrementally the carbon monoxide and ozone levels; wildlife habitat and associated species will continue to decline; and noise levels are likely to increase as will traffic. RECOMMENDATIONS: 64. As additional development occurs in the area, mitigation measures should be established and coordinated by the City of Renton for each project to minimize the cumulative adverse effects of the proposals. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E. 65. In order to address potential cumulative impacts, the applicant shall coordinate schedules for new construction in the area to eliminate excessive traffic usage of Oakesdale Avenue. Nexus: City of Renton Environmental Ordinance (4-6-22), City of Renton Comprehensive Plan VII I.A.;Valley Policy Plan I.C.5. UNAVOIDABLE ADVERSE IMPACTS: As the area urbanizes with this and other projects, incremental impacts will be felt on air quality, water quality, wildlife habitat and wetlands. Odor and aesthetic impacts may be expected from the Metro Wastewater Treatment Plant Expansion across Oakesdale, and noise, air quality and traffic are expected to increase with the proposed Rabanco facility. 25 1(431 ` AVW I % m'rflc,cl % 1% FI JE ALU EI it ki II II 11 lilA - 11A SJSVI-lcl i 1Vcl J1V1EciIEfl 1 CAI�1 AUV1E1 k 1 1717157r[CjigMl k. `1, CITY OF RENTON ma # ti Planning/Building/Public Works Department Earl Clymer, Mayor Lynn Guttman,Administrator May 28, 1991 ti All Parties of Record and Interested Public SUBJECT: Black River Corporate Park Phases VII and VIII SEPA Mitigation Measures To Whom It May Concern: Attached herein is a copy. of the staff report and mitigation measures that were adopted by the Environmental Review Committee at its regular meeting on May 22, 1991. These measures will apply to all proposed development actions identified in the Draft and Final EIS. The measures will apply to the first permit, ostensibly a Special Permit for Fill and Grade, and will continue to be applied with all subsequent permits. This mitigation document is an appealable action. Appeals should be filed with the City of Renton Hearing Examiner by June 17, 1991, 5:00 p.m. If you have any questions about these mitigation measures, the appeal process or about becoming a party of interest for any subsequent development actions identified in the EIS, please contact Donald Erickson, Principal Planner and Secretary to the Environmental Review Committee or Mary Lynne Myer, Project Manager, at 235-2550. Thank you for your interest in this major project. / Donald K. Erickson, Secretary Environmental Review Committee 200 Mill Avenue South - Renton, Washington 98055 05/28/91(MITDOCA) MITIGATION DOCUMENT BLACK RIVER CORPORATE PARK TRACT A PHASES VII/VIII The Environmental Review Committee for the City of Renton issued a Final Environmental Impact Statement for the Black River Corporate Park, Tracts A and B on March 27, 1991. The EIS for this project has identified a number of possible mitigation measures for impacts that were considered to be significant or potentially significant (as defined by quantitative measures whenever such measures were found to exist). These measures, and others which the responsible official may determine are warranted to protect the environment, are the subject of this mitigation document. A number of chapters of WAC 197-11 speak directly to the imposition of mitigation measures. The relevant chapters are cited below. WAC 197-11-060 Content of Environmental Review states that agencies shall "carefully consider the range of probable impacts, including short-term and long-term effects." Impacts shall include "those that are likely to arise or exist over the lifetime of a proposal" or, in some cases, even longer. WAC 197-11-330 Threshold Determination Process requires the responsible official to take into account the following when determining whether a proposal has significant adverse impacts: 'The same proposal may have significant adverse impact in one location but not in another location;" "the absolute quantitative effects of a proposal are also important and may result in a significant adverse impact regardless of the nature of the existing environment,"and "Several marginal impacts when considered together may result in a significant adverse impact." In reaching such a decision, SEPA states that the responsible official shall not balance whether the beneficial aspects of a proposal outweigh its adverse impacts, but rather shall consider whether a proposal has any probable significant adverse environmental impacts under the rules stated above. WAC 197-11-448 Relationship of EIS to other considerations. (1) SEPA contemplates that the general welfare, social, economic,and other requirements and essential considerations of state policy will be taken into account in weighing and balancing alternatives and in making final decisions.... The EIS provides a basis upon which the responsible agency and officials can make the balancing judgement mandated by SEPA, because it provides information on the environmental costs and impacts. WAC 197-11-768 defines mitigation as: 1) avoiding the impact altogether by not taking a certain action or parts of an action; 2) minimizing impacts by limiting the degree or magnitude of the action and its implementation, by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts; 3) rectifying the impact by repairing, rehabilitating, or restoring the affected environment; 4) reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action; and 5) compensating for the impact by replacing enhancing, or providing substitute resources or environments,and/or monitoring the impact and taking appropriate corrective measures. WAC 197-11-660 further states that decisionmakers may impose mitigation measures designed to mitigate the environmental impacts subject to the following limitations: A) mitigation measures, or denials, shall be based on policies, plans, rules or regulations formally designated by the agency; B) mitigation measures shall be related to specific adverse environmental impacts clearly identified in an environmental document on the proposal and shall be stated in writing by the decisionmaker; C) mitigation measures shall be reasonable and capable of being accomplished; D) responsibility for implementing mitigation measures may be imposed upon an applicant only to the extent attributable to the identified averse impacts of its proposal. Voluntary additional mitigation measures may occur; E) before requiring mitigation measures, agencies shall consider whether local, state or federal requirements and enforcement would mitigate an identified significant impact; and F) to deny a proposal under SEPA, an agency must find that: 1) the 1 05/28/91(MITDOCA) proposal would be likely to result in significant adverse environmental impacts identified in a final or supplemental environmental impact statement prepared under this chapter; and 2) reasonable mitigation measures are insufficient to mitigate the identified impact. In imposing mitigating measures, the Environmental Rev ew Committee considered environmental impacts that are expected from the project itself. In addition, s veral other independent projects are undergoing environmental review in the same geographical area. Th;se include the Metro Wastewater Treatment Plant Expansion, the Rabanco Recycling Facility, and Pha e VI of the Black River Corporate Park. The cumulative impacts of these projects have been conside ed in the formulation of this mitigation document, ., and will be considered in the mitigation documents of th other projects under environmental review. SEPA states that: "After its decision each agency shall ake available to the public a document that states the decisions. The document shall state the mitigation easures, if any, that will be implemented as part of the decisions, including any monitoring of environm ntal impacts." (WAC 197-11-660(1)(b)). This document is intended to meet this requirement. As well as analyzing the environmental impacts, the C) of Renton, under SEPA, must assess its many objectives and goals and decide how this project furthe s or conflicts with them. Some City goals may be internally conflicting. When this occurs, the City bel eves that the SEPA process mandates a close environmental analysis to determine priorities. If the p iorities are established and the project is able to mitigate its impacts sufficiently, then the City believ s it should proceed. This document presents mitigation measures necessary for the ultimate conservation of the Black River Corporate Park, Phases VII/VIII. THE PROPOSED ACTION The proposed action of First City Development Corp. (FCDC) is the construction of a four-year phased project, including three one to four-story office buildings on 12.07 acres of Tract A, and three four to seven- story buildings on the 15.7 acre Tract B, Renton, Washington. Tract A will also include surface parking to accommodate the buildings on Tract A. Tract B will include the construction of a three-story parking structure and associated surface parking. As a result of the State Environmental Policy Act (SEPA) scoping process, comments were received from governmental agencies and interested citizens regard( g the major issues that needed to be analyzed in this EIS. Those issues included the following: topo raphy and soils; foundation; seismic; air quality; surface water movement/quantity;water quality runoff; egetation; shoreland/wetlands; wildlife resources; unique terrestrial resources; noise; hazardous waste; relationship to existing land uses; relationship to plans, zoning and shorelines; light and glare; historic and cultural resources; traffic; parks and other recreational facilities;and cumulative impact. This EIS also contains an original study on the Great Blue Heron, an urban wildlife resource, based on primary research and empirical evidence gathered fom field visits and a compilation of secondary - research. This research is entitled "Revised Life History and Effects of Human Disturbance on Great Blue Heron Colonies," Appendix B. A second empirical study is Appendix C, noise monitoring data, July 20, 1990 Geotechnical drilling. A Hazardous Waste Study was also completed on this property and is appended to the EIS by reference. It will be transmittetl to the Renton Hearing Examiner and is available for public viewing at the City of Renton Development Planning Division. Finally,the EIS appends, by reference,the following documents: 1974. Auburn Interceptor EIS 1980. U.S. Environmental Protection Agency-Wastewater Management Plan for the Lake Washington/Green River Basins, EIS and Appendices. Report No.910/9-80-077 2 05/28/91(MITDOCA) 1981. U.S. Environmental Protection Agency- Final EIS on the Wastewater Management Plan for the Lake Washington/Green River Basins. 1983. Draft Supplemental EIS for the Puget Sound Facilities Engineering Report. 1983. Final Supplemental EIS on the Puget Sound Facilities Engineering Report. 1983. U.S. Environmental Protection Agency - Municipality of Metropolitan Seattle/Draft and Final EISs, Sludge Management Plan. 1984. Final Supplemental EIS on the Renton Effluent Transfer System Alternative for the Wastewater Management Plan, Lake Washington/Green River Basins. 1984. Public Comments on the Draft Supplemental EIS on the Renton Effluent Transfer System Alternatives for the Wastewater Management Plan, Lake Washington/Green River Basins. 1985. Draft EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. 1985. Final EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. 1986. Final Supplemental EIS for Secondary Facilities and Combined Sewer Overflow Control. 1988. Final Supplemental EIS for West Point Secondary Treatment Facilities. The content of the EIS is determined by the Lead Agency (in this case, the City of Renton) based, in part, on key sections of the SEPA rules (197-11-402, 408,430, and 440) together with results of the EIS scoping process. The Draft Black River Corporate Park EIS included an analysis of the proposed action and each of the alternatives (Al -no action; B2-a single seven-story building;and B3-no action). ELEMENTS OF THE ENVIRONMENT TRACT A-MITIGATION CONDITIONS A. TOPOGRAPHY/SOILS TOPOGRAPHY: The Draft and Final EIS note that approximately 10,000 cubic yards of fill for regrading will be necessary to establish desired elevations on Tract A. Cuts and fills would be balanced to the extent possible to minimize the need to import soil. It is possible that the site's elevation would increase by up to approximately five feet in order to achieve desired grades. The tract's present elevation varies from 18 to 22 feet (Fioodplain elevation is 15 feet.) It is anticipated that grading for all three phases would be done in the initial phase of the project. The EIS notes that all construction impacts, including fill and grade, could have an adverse impact on the heron colony and other wildlife. In addition, to reduce the amount of post-construction settlement under the proposed Phase I single-story building, an additional three feet of material will be added as a preload 3 05/28/91(MiroocA) over the existing fill, left in place for approximately 10 weeks and then removed from the site. This could also add to the construction impacts for noise, air quality,wildlife impacts, water quality. The site has been previously filled and this additional fill, if placed in a manner consistent with the King County Surface Water Manual requirements and with an erosion and control plan, should not cause significant ad+rse erosion impacts. In addition, if construction methodology and timing requirements are, followed, impacts on wildlife should be substantially mitigated. The effect of this fill on existing veget tion found on site is discussed under the Plants Section of this document. _ SOILS: The FEIS notes that soil i etigation results showed that priority pollutant concentrations were detected at reI lively low concentrations with the exception of Cadmium and Total Petroleum Hydro rbons. These two exceeded Washington State Department of Ecology's (WSDOE) proposed industrial soil cleanup concentrations. WSDOE has no cleanup standards for he other pollutants found on site. Movement of all contaminants located on Tract A woul be minimized by the site's low permeability soils and the covering of pollutants with asphalt and concrete surfaces, and/or four to five feet of clean fill. Soils brought in as fill for either preloading, construction or berm usage, will be reviewed for suitability by a qualified soils engineer. No significant unavoidable adverse ir[npacts are expected if mitigation measures are followed. RECOMMENDATION: 1. In order to reduce the construction impacts on the nearby heron rookery and other wildlife,the applicant shall do no grading or outdoor construction during the period from February 1 through July 1 within 800 feet of the heron colony, and from July 1 through August 1 within 600 feet of the colony. (See definition of "major outdoor construction"and"interior work'on page 3-24 of FEIS.) Nexus: Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinnce (4-6-22); WAC 197-11-768; City of Renton Comprehensive Plan D, I.M.2. 2. In order to address the hazardous waste presence on Tract A,the applicant shall, unless otherwise determined by WSDOE, seal the contaminated areas on Tract A with asphalt or concrete and/or clean soils. Nexus: Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.M. 3. In order to address any hazardous waste presence on Tract A as determined by WSDOE,the applicant shall establish permanent signage to the satisfaction of the Planning/Building/Public Works Department to warn utilities and others of the location of contaminated soils. A signage plan shall be approved by the Development Services Section prior to the issuance of construction permits. 4 05/28/91(MITDOCA) Nexus: Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.M. 4. In order to ensure that no new contamination is brought onto Tract A, the applicant shall use only uncontaminated soil able to support a trail, side slopes and native vegetation for the proposed berm. Soils shall be reviewed by a qualified soils engineer and shall be approved by the Planning/Building/Public Works Department. Nexus: Mining Excavation & Grading Ordinance (4-10); Land Clearing/Tree Cutting (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.E. 5. In order to ensure that construction impacts do not adversely affect the wildlife on Tract A, the applicant shall phase the preloading and grading consistent with the phasing for the buildings. (See discussion on vegetation.) Nexus: Mining Excavation & Grading Ordinance (4-10); Environmental Review Ordinance(4-6-22); City of Renton Comprehensive Plan I.D. UNAVOIDABLE ADVERSE IMPACTS: Even with all mitigation in place,the following impacts are expected: Placement of up to 10,000 cubic yards of fill on Tract A and an additional amount to construct earthen berms required as mitigation for impacts on unique terrestrial species. Construction impacts on wildlife (noise,dust,and movement from filling and grading activities) cannot be totally mitigated. B. FOUNDATION The EIS notes that the soils on site can be expected to compress when loaded, and that a preloading program has been recommended. The amount of material needed for preloading has not been determined. The one to two-story structures can be supported by conventional shallow foundations. But for structures over two stories high, pile-supported foundations extending to the dense sands and gravels are recommended. Either driven steel piles or auger cast-in-place piles are considered technically possible. However, the driven steel pile construction is noisier and causes more vibrations than auger pile construction. RECOMMENDATIONS: 6. In order to address the cumulative construction noise and vibrations impacts on wildlife,the applicant shall use only auger cast-in-place construction techniques in lieu of pile driving. • 05/28/91(MRDOCA) Nexus: City of Renton Mining Excavation & Grading Ordinance (4-10); City of Renton Environmental Review 'rdinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D. C. SEISMIC The EIS notes that an evaluation of the iquefaction potential of the solids in the vicinity of the project site was performed in 1983 or the expansion of the Metro's Renton Treatment Plant located on an adjacent parcel. It was concluded that the potential for liquefaction at - this site is quite low. On Tract A, the soil contains plastic silts and medium dense sands which diminish the potential of liquefactions. (Earth Consultants 1988) It was determined that seismic impacts to the site may be mitigated by good building practices and _ techniques. NOTE TO APPLICANT: On Tract A, the design of all buildings shall follow the Uniform Building Code(UBC). RECOMMENDATIONS: , No additional mitigation measures needed. D. AIR QUALITY The Puget Sound Air Pollution Control Agency is responsible for controlling stationary sources of air pollution in the central PiJiget Sound region,while WSDOE is responsible for monitoring carbon monoxide (CO) levls. None of the monitoring sites for either of these agencies are close enough to the stu�y area to be considered representative of the CO concentrations in the project area. Giv n the current density of land use development and the existing roadway network, existing violations of the CO standards are considered unlikely in the immediate vicinity of the project area. The applicant will be asked to reduce SOV trips to and from the site through a Transportation Management Plan (IMP) (see transportation section of this document). Reduction in auto trips serves to reduce emissions which contribute to lowered air quality. SIGNIFICANT ADVERSE IMPACTS: None on Tract A. See Tract B discus ion. RECOMMENDATIONS: Mitigation measures will be specified under Tract B section for Transportation. E. SURFACE WATER MOVEMENT The EIS notes that the primary impacts of the proposed projects on Tract A would result from the increase in impervious surface and the resulting change in runoff volume and timing. Runoff is proposed to be routed through biofiltration swales to the P-1 Pond. Due to excess capacity of the P-1 channel, significant impacts to the pond from the additional flows are not anticipated. However, t e city will review detailed drainage plans and any previous agreements regarding discharge from the Corporate Park properties to the P-1 Pond during the site plan approval process. 6 05/28/91(MITDOCA) The P-1 channel and pond were constructed on land dedicated to the City by First City Development Corporation. The pond and channel are regional detention/retention facilities, used for flood control for the Green River Valley area. The management of this area, (e.g., water levels, plantings, sediment dredging), affects the regional flood control, surface water volumes, vegetation on site, and wildlife in the area. Three entities are involved in the management of the area: the Soil Conservation Service (SCS), King County Surface Water Management Division, and the City of Renton. Adjacent shoreline owners also affect the management of the pond. First City Development Corporation is one of these owners. NOTE TO APPLICANT: In order to address surface water impacts, the applicant must comply with City of Renton Public Works Drainage requirements and construct in a manner consistent with the recently adopted King County Surface Water Design Manual. The applicant must calculate runoff volumes from the site, prepare a Level I downstream analysis and design the swales using methods outlined in the Surface Water Design Manual. In order to address detention/retention and water quality compliance, on Tract A, the City will review the need for a wet pond system prior to discharge of runoff to the P-1 Pond based on review of existing agreements as part of the site plan approval process. RECOMMENDATIONS: 7. In order to reduce surface water impacts, FCDC or subsequent owners, along with the City, Metro, King County, SCS, and other abutting landowners shall participate in the preparation and implementation of a management plan for the P-1 Pond, under the leadership of the City of Renton, as defined in Section 3.4.1 of the Final EIS. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Surface & Storm Water Drainage Ordinance, City of Renton Municipal Code (4-22); City of Renton Green River Valley Plan I.C.4.; City of Renton Comprehensive Plan I.A., I.C., I.G., I.H., I.I. SIGNIFICANT UNAVOIDABLE ADVERSE IMPACTS: Even with Best Management Practices and required surface water run-off plans and structures, the volume of stormwater runoff from Tract A and B will increase with development. The Level I downstream analysis required by the City will determine impact of that increase. Cumulative impacts to the pond from adjacent land uses and downstream land uses are expected, but are not quantifiable at this time. F. SURFACE WATER QUALITY The EIS notes the only surface water features on Tract A are two small wetlands. Both would be filled and mitigation is suggested under wetlands section of this document. Grading,filling,and preloading could introduce sediment to the P-1 Pond and Springbrook Creek from erosion action during construction. Following construction, the most significant water quality impact would be the introduction of contaminants associated with runoff from parking and landscaping areas. Hydrologic mitigation measures would be determined as part of the City's review of the detailed drainage plans for the project. Biofiltration swales, oil/water separators and other measures associated with the Storm Water Design Manual would be implemented. 7 05/28/91(MfTDOCA) RECOMMENDATION: 8. In order to reduce surface water, impacts, on Tract A, the applicant shall prepare and submit a conceptual Erosion Control Plan to the City, as specified in the Draft and Final EIS, Section 3.4.2. Based on this conceptual plan, additional mitigation measures will be defined by the City during site plan review. At a minimum: - the applicant shall install and maintain oil/water separators; - install biofiltration swales per City and WSDOE requirements and recommendations. Based on City review of the drainage plan, the applicant may be required to treat runoff from paved areas in a wet pond prior to discharge to the P-1 Pond. A final erosion control plan shall be submitted prior to issuance of construction permits. As mentioned under Water Quantity Section of this document, the applicant shall participate in the management plan for the P-1 as defined in Section 3.4.1 of the Final EIS. (See mitigation measure No. 7.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Surface & Storm Water Drainage Ordinance (4-22); Valley Plan I.C.4.; City of Renton Comprehensive Plan I.D., I.H J, I.F., I.J., I.A.; City of Renton Land Clearing Ordinance (4-9) UNAVOIDABLE ADVERSE IMPACTS: Even with the use of biofiltration swales, wet ponds, and implementation of an erosion control plan, 20 to 40 percent of suspended solids and metals, 17 to 33 percent of oil and grease, and 15 to 100 percent of the nutrients originating from the project site,as with all project sites,will eventually enter the receiving water. G. VEGETATION The draft and final EIS present a list of plant species occurring on the site. Generally, all of Tract A consists of grasses and shrubs with some scattered deciduous trees. Approximately 11.6 acres of this land would be converted to a developed site. None of the species or the vegetative types on Tract A are considered sensitive, threatened, or endangered in Washington. However, the vegetation does provide limited habitat for wildlife. RECOMMENDATIONS: 9. In order to reduce the impact of vegetation removal on site and provide screening, the applicant shall participate with the City of Renton, Metro, King County and SCS in a shared-cost coordinated planting program for the portion of the shorelines of the P-1 Pond and Springbrook Creek along Tract A under City ownership. Nexus: Shoreline Master Program; City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A.; Valley Plan I.C.4., I.C.8. 8 05/28/91(MITDOCA) 10. In order to reduce the impact of human intrusion, the applicant shall plant native lowland trees and shrubs (on the applicant's and City-owned property between the shorelines of P-1 Pond and Springbrook Creek, and the berm recommended in Measure 14,)to provide additional screening,visual and biological diversity, and wildlife habitat using wildlife habitat using species identified in Section 3.5.1 of the Final EIS. The plantings shall be integrated with the existing vegetation on the side slopes between Tract A and the P-1 Pond. Planting plans shall be submitted to the Development Services Division of the Planning/Building/Public Works Department during site plan review. This buffer shall be provided before major site preparation or construction activities occur. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 11. The applicant shall increase the setback distance on Tract A to 600 feet from the heron colony for all new development in order to mitigate against the impacts of construction to the herons. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.,I.C., I.D., I.E.;Valley Plan I.C.S. 12. In order to mitigate the loss of vegetation and wildlife habitat, the applicant shall plant native lowland trees and shrubs in the setback area established in Measure • 11 and using the species specified in Section 3.5.1 of the Final EIS. This buffer shall be provided before major site preparation or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. The landscape plan for this element shall be submitted to the DSD during site plan review. The applicant shall not grade or construct until the plan Is approved and implemented. Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.C., I.D., I.E., I.A., I.J.;Valley Plan I.C.4., I.C.8. 13. In order to mitigate the loss of vegetation, the applicant shall develop a landscape plan for the entire site for site plan approval, excluding the areas in Measures 9, 10 and 11. Submitted at the time of construction permit, the plan shall include a detailed planting plan with specifications to mimic native plant community composition and structure. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.C., I.D., I.E., I.A., I.J.;Valley Plan I.C.4., I.C.8. 14. In order to reduce the impact of vegetation removal, human intrusion and to create wildlife screening, the applicant shall construct within and along the 600 foot setback from the nearest heron nest tree (in the main heronry) on Tract A, a benched 10-foot high earthen berm and trail and vegetate with a view obscuring screen of 20 foot tall native evergreen trees and native shrubs in a double staggered planting row. This requirement must be completed and verified by the 9 05/28/91(MRDOCI Development Services Division of the Planning/Building/Public Works Department before any further construction or grading. This condition must be implemented before any building construction. (See Figures 3-1,3-2 FEIS.) Nexus: Land Clearing (4-9); City,of Renton Environmental Review Ordinance (4-6- 22); City of Renton Comprehensive Plan I.D., I.F, I.A. 15. In order to mitigate for vegetation removal and to provide additional wildlife screening between the Tract and the P-1 Pond and channel, the applicant shall construct a five foot high earthen berm and trail along the remainder of the shoreline (not covered in Measure No. 14) along Springbrook Creek and the P-1 Pond. The applicant shall provide a visual buffer between the heron rookery and development by spacing six to eight foot evergreen trees and shrubs on the berm benches in a double staggered planting row (see mitigation measures defined in Section 3.5.3 of the EIS) prior to further construction or grading. The plantings shall be verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (See Figures 3-1,3-2 FEIS.) Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22);City'of Renton Comprehensive Plan I.D., I.E., I.A., I.C., III.C., III.D.;Valley Plan I.C.8. 16. In order to reduce the impact on vegetation, the applicant shall ensure optimal plant survival and plant growth on all site landscaping by requiring irrigation and maintenance on FCDC property The applicant shall present a bond of 10 percent of the value of all new landscaping materials for a minimum of five years for irrigation and maintenance, to the satisfaction of the Development Services Division of the Planning/Building/Public Works Department. Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); Cityl of Renton Comprehensive Plan I.D., I.E., I.C., I.A., III.C., III.D.;Valley Plan I.C.8. 17. The applicant shall plant additional native shrubs and trees along the eastern boundary of Tract A in the acres designated as "a potential heron flight zone;"to reduce the impact of human intrusion in the critical area prior to any substantial construction or grading. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscaping Ordinance(4-31-34); Land Clearing and Tree Cutting Ordinance (4-9) UNAVOIDABLE ADVERSE IMPACTS: The proposed actions would result in the permanent loss of 11.6 acres of vegetation/habitat on Tract A. H. WETLANDS The impacts of the proposal would include the loss of 0.1 acres of two wetlands formed when Tract A was regraded following construction of the P-1 Pond. These two wetlands 10 05/28/91(MITDOCA) • are vegetated by soft rush and a thicket of pioneering willow. Because the wetlands are hydrologically isolated and lie approximately 15 feet higher than the P-1 Pond summer water elevations,their functional value is relatively low. The proposal would fill the 0.1 acre of wetlands on Tract A. RECOMMENDATION: 18. The applicant shall mitigate for the loss of 0.1 acres of wetlands on Tract A by creating an additional new or enhanced wetland area adjacent to the old Black River channel on Tract B which historically could have been wetland. This shall be done by submitting a Wetland Enhancement Plan to the Development Services Division of the Planning/Building/Public Works Department prior to the public hearing on the site plan. Final plans must be approved before the issuance of site preparation/construction permits. Nexus: Surface .& Storm Water Drainage Ordinance (4-22); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.J, I.C., I.A. WILDLIFE RESOURCES The EIS presents a list of birds, mammals,amphibians, and reptiles observed or potentially occurring in the project area, including the P-1 Pond and the adjacent riparian areas. Thirty-six species of mammals are known to occupy habitat similar to that which occurs in the vicinity of the project area. Six species of mammals, or their signs, have been observed on the project site or in the immediate vicinity. As many as 85 species of birds, as well as 19 species of reptiles and amphibians, may occur in the vicinity of the project area. Small mammal trapping was carried out on Tract A and B during July 2-4, 1990. Six deer mice were trapped on Tract B (during 30 trap nights) and one on Tract A (during 48 trap nights). This indicates a lower population of rodents on Tract A due to the sparser vegetative cover and duff layer on it. RECOMMENDATIONS: 19. The applicant shall show a setback distance on Tract A from the heron colony to development from 450 feet as defined in the EIS to 600 feet, in order to reduce the intrusion of human and vehicular activity on the heronry. This revision must be submitted at the Site Plan Review stage. (Same as Measure#11.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33) 20. In order to mitigate the loss of vegetation and habitat,the applicant shall develop a landscape plan for the entire site for site plan approval. Specifications which mimic native plant community composition and structure shall be submitted at the time of construction permit. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. (Same as Measure# 13.) 11 05/28/91(MITDOCA) I � Nexus: Land Clearing (4-9); Landscaping (4-31-34); Environmental Review Ordinance (4-6-22);Valley Plan I.C.8; Comprehensive Plan I.A., I.C., I.D., I.E., I.G., I.J., III.C., III.D.; Shoreline Master Program 21. In order to reduce the impact of human intrusion, the applicant shall, prior to building construction, construct and vegetate the 10 foot high berm with shrubs and trees having a minimum Height when planted of at least 20 feet on sufficiently close spacing to create a visual buffer, and vegetate the five foot high berm with shrubs and six to eight foot tall evergreen trees. In addition, the applicant shall plant native lowland trees and shrubs (on the applicant's and City-owned property between the development, P-1 Pond and Springbrook Creek and the berm), to provide additional screening, visual and biological diversity, and wildlife habitat. The plantings shall be integrated with the existing vegetation on the side slopes between Tract A and the P-1 Pond and plans delineating it shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to site plan review. (This measure is the same as 9, 10, 11, 14, 15, &20.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C. I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 22. In order to partially mitigate for the loss of 11.6 acres of terrestrial wildlife habitat, the applicant shall plant native lowland trees and shrubs as determined in the Landscape Plan of Measure 20, along the P-1 Pond and Springbrook Creek shorelines to the limit of the 600 foot buffer area (see Section 3.5.1 of DEIS for species list). These planting shall be provided before major site preparation or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. (Same as Measure #13.) Nexus: Shoreline Master Program; Land Clearing & Tree Cutting (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.3, I.D., I.J, I.C., I.G.;Valley Plan I.C.8. 23. In order to reduce human intrusion into wildlife area adjacent to the P-1 Pond, the applicant shall instead provide access to the proposed new trail established in Measure 21 from Oakesdale Avenue SW west through the Tract A and out to Oakesdale Avenue SW again, on the berm as shown in Fig.3-1,3-2 FEIS. Nexus: City of Renton Comprehensive Parks Plan; City of Renton Environmental Review Ordinance(4-6-22);City of Renton Comprehensive Plan I.A., I.C., I.H. 24. Along the trail established in Measure No. 21,the applicant shall construct a fence to separate the trail and Springbrook Creek and the P-1 Pond, preventing human intrusion into wildlife habitat areas. Plans for these improvements shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to site plan public hearing. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.H., I.I., I.J., I.K.;Valley Plan I.C.8. 25. In order to reduce human intrusion into the wildlife habitat along the edges of the P-1 Pond, the applicant shall provide for the installation of gated barriers on the 12 05/28/91(MITDOCA) City-owned maintenance roadway easement, perpendicular to the easement. The barriers shall be installed at the east and west access points of the roadway. Future maintenance will become the responsibility of the City of Renton. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.H, I.J., I.K;Valley Plan I.C.8. 26. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with non-glare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectivity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); Valley Plan 1.8; City of Renton Comprehensive Plan I.A., I.D. UNAVOIDABLE ADVERSE IMPACTS: Loss of 11.6 acres of wildlife habitat on Tract A and a short term disturbance during the construction of the project to wildlife, including waterfowl, which use the portion of the P-1 Pond bordering Tract A. J. UNIQUE TERRESTRIAL RESOURCES (Great Blue Herons) The EIS notes that guidelines have been presented to reduce the impact on the Great Blue Heron Colony present in the riparian area north and east of Tract A and north of Tract B. The guidelines have included setbacks, berms, plantings, reduced construction scheduling and phasing, reduced building heights, hooded windows, building colors and monitoring. These measures are listed in detail below. However, while these measures are prudent public precautions, it is not clear whether they will be sufficient to mitigate the construction and operational aspects of the proposal on the herons. Monitoring programs provided as part of this document will provide added scientific evidence of the success or failure of the measures. Adjustments can then be made based on these scientific observations. RECOMMENDATIONS: The following mitigation measures are specific to Tract A, other measures follow that are common to both tracts. 27. For the portion of Tract A lying within 600 feet radius of the nearest heron nest tree, the applicant shall establish a native vegetation buffer and the berms as specified in Conditions 11 and 12. This area shall be an area of no development or human intrusion, except as required to maintain the berms and plantings. Plantings shall be approved through a site plantings plan established in Measure No. 13. All planting or other activity shall comply with the time limitations set forth for construction activity within 800 feet of the heron colony. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 28. In order to minimize the impacts on the wildlife,the applicant shall limit the Tract A building height to four stories (57 feet) between 600 and 800 feet from the heron 13 05/28/91(MITDOCA) colony and 200 feet from the P-1 Pond and the applicant shall limit the height of buildings to 71 feet (five stories) beyond 800 feet from the heron colony. (See Figure 3-1 of FEIS.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 29. In order to reduce construction impacts, the applicant shall construct the berm, landscape buffer, and Building A (to be located outside the 1000 foot radius from the heronry) or Buildings B and/or C (proposed within 800 feet of the heron colony). Any remaining buildings may be constructed in the second construction season. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 30. In order to minimize human intrusion, the applicant shall not construct any parking, building or accessory 1 use within 600 feet of the heron nesting colony, except the landscaping and berms, as specified as mitigation in this FEIS. The applicant shall comply with the time limitations set forth for construction activity within 800 feet of the heron colony. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 31. In order to minimize the impact on nesting Great Blue Herons and other wildlife, the applicant shall exclude major outdoor construction activities (preloading, grading, foundations, structural steel, installation of dryvit panels, roofing and hardscape)within 800 feet of the heron colony during the period from February 1 to July 1 and within 600 feet of the colony from July 1 to August 1. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 32. In order to minimize the impacts on the herons and other wildlife, the applicant shall do interior work (rough-in mechanical and electrical, glazing installation, interior shell finish, glazing, and tenant improvements) once the berms, building shells and window hoods have been installed. The applicant shall complete landscaping (as specified below) immediately after, or in landscaping in conjunction with, or after,the construction of the buildings. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 33. In order to reduce the impact of human intrusion on wildlife (including herons) into the area, the applicant shall, prior to construction of building and parking, 1 construct a 10 foot high benched earthen berm. This berm shall then be vegetated with 20 foot tall view obscuring screen of evergreen trees and native 1 shrubs in a double staggered planting row. Berm and tree height are intended to achieve a 30 foot screen. A five foot high berm along the remainder of the site bordering the P-1 Pond and, Springbrook Creek (see Figures 3-1 and 3-2 FEIS) shall also be constructed and panted as described in Measure#15. This measure is intended to be consistent with Measure No. 14 and 15. 1 14 05/28/91(MRDOC/) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E., I.H., III.C., III.D.;Valley Plan I.C.8. 34. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 35. In order to protect wildlife,the applicant shall plant and maintain a linear buffer of native vegetation along the P-1 Pond and Springbrook Creek. This is fully described in Condition 9, 10, 11 and 12. Nexus: Landscaping (4-31-34); Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 36. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with non-glare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectivity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); Valley Plan 1.8; City of Renton Comprehensive Plan I.A., I.D. 37. In order to ensure that adequate information is available on the impact of the building on the heron and other wildlife, the applicant shall provide a monitoring plan for the construction and post-construction period. The plan shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to the site plan public hearing. This monitoring plan shall include the following: a. An element to monitor the effects of construction activities on nesting Great Blue Herons. This element of the plan shall be developed in consultation with the Washington Department of Wildlife; b. An element providing a process for the establishment of a monitoring committee, comprised of individuals knowledgeable in the area of wildlife preservation issues. It shall be formed prior to the issuance of grading and building permits to develop and implement the monitoring plan. The committee shall consist of a representative from the applicant, the City of Renton,and the public. The Washington Department of Wildlife shall have an advisory role to ensure that the monitoring effort is consistent with any other heron monitoring programs in the region; c. An element providing for committee review of monitoring to be done by a certified biologist. Monitoring results for the period from January 1 to June 1 of each construction season will be presented to the Environmental Review Committee in an interim report. The results will be used to determine if there is a need for additional mitigation measures such as additional screening of construction or alterations in construction 15 05/28/91(MRDOCA) timing, methods, phasing, screening or location of development; as well as whether construction time limits, phasing, screening or other mitigation may be modified or eliminated based upon evidence that the heron colony is inactive for that particular season. Such determination could be made by June 1 of each year. The berm and its landscaping, however, shall not be subject to elimination under this condition. d. An element providing for committee report on the monitoring results. The results of the monitoring period (January 1 to December 31), and the Committee's report shall be in an annual report to be presented to the City of Renton's Environmental Review Committee for their consideration. The annual report will describe the condition of the heron colony, present the results of monitoring and impacts of construction (vis-a-vis other factors such as weather conditions, availability of food resources and other regional factors, and comparison to similar urban colonies); e. An element establishing ERC's ability to act on the annual report. The annual report shall be; used by the Environmental Review Committee (ERC) to determine the need, if any, for additional mitigation measures • such as enhanced buffering and/or screening of construction activities, noise mitigation, and alterations in construction timing, methods, or location of development activity; NOTE: Results of first year monitoring may also be used by the committee to determine allowable construction activity (i.e., the number of buildings/parking structures to be built at any one time)for the ensuing construction period after the first year. f. Monitoring and annual reports shall continue for at least one year after completion of all project construction as determined by the City's Environmental Review Committee. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., LE.;WAC 197-11-768 38. In order to minimize the impacts on the herons and other wildlife, the applicant shall do interior work (rough-in mechanical and electrical, interior shell finish, glazing, and tenant improvements) once the berms, building shells and window hoods have been installed. The applicant shall complete landscaping (as specified below) immediately after, or in landscaping in conjunction with, or after, the construction of the buildings. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 39. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C.,'I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 16 05/28/91(MITDOCI) UNAVOIDABLE ADVERSE IMPACTS: Unavoidable adverse impacts will include changes in heron flight patterns to and from the heron colony, occasional disturbance to herons (feeding and movements) during construction and during day-to-day use of the buildings and parking areas. B. NOISE The EIS notes that a number of noise sources exist in the vicinity of Tracts A and B, including vehicular noise along nearby roadways and 1-405, intermittent noise associated with warehouse and industrial uses south of the site such as the Metro Wastewater Treatment Plant; low flying aircraft; occasional rail activities north of the site; and office and other construction east of the rookery. After development, noise sources such as mechanical units of the buildings, cars coming and leaving the site,and general intensified human use and activity can be expected. In addition, cumulative noise impacts from other projects in the area may also be of concern. As EISs for future projects are completed, additional noise data will become available. Mitigation proposed for this project concentrates on impacts from this project alone. It is expected that each new project will have noise mitigation. In addition, scientific research has not adequately covered the response of herons and other wildlife to noise impacts throughout their life cycles. Therefore, it is prudent for the city to condition the development in an effort to reduce noise as much as possible. RECOMMENDATIONS: 40. In order to reduce noise impacts, the applicant shall restrict outdoor construction activities to week days and to the hours of dawn to dusk during the summer and fall months and 7:00 a.m.to 6:00 p.m.during the winter and spring months. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 41. In order to reduce noise impacts, the applicant shall ensure that all construction equipment has sound control devices no less effective than those provided on the original equipment (e.g., equipment mufflers and noise shrouds are intact and operational). Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 42. The applicant shall, in order to control noise, provide a noise education program for operators of excavation equipment and haul trucks. The program shall discourage wide open throttles, compression release brakes, and provide incentives for operators using noise suppression methods such as shutting off equipment when not in use. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 43. The applicant shall, in order to reduce noise impacts, erect a temporary noise barrier around loud equipment. 17 05/28/91(MI DOCA) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 44. In order to reduce construction noise, the applicant shall require contractors to use electrically driven equipment rather than pneumatically driven machines, whenever possible. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 45. In order to reduce noise impacts, the applicant shall certify, in writing to the Development Services Division of the Planning/Building/Public Works Department prior to commencing site preparation or construction activity, that all construction equipment complies with pertinent equipment noise standards of the U.S. Environmental ProtectionlAgency. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. NOTE TO APPLICANT: The applicant must comply with the City of Renton's Noise Ordinance,Zoning Code Title 8, Chapter 7, Health and Sanitation. 46. In order to reduce noise impacts on wildlife and unique terrestrial resources, the applicant shall use auger cast;in-place piling construction in lieu of conventional pile driving. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. 47. In order to minimize the impact of construction noise on nesting herons, the applicant shall exclude major outdoor construction activities within 800 feet of the heron colony during the period from February 1 to July 1 (Section 3.5.4 of FEIS). Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D.; Green River Valley Policy Plan I.C.8. 48. In order to minimize the impact of noise on herons and other wildlife,the applicant shall soundproof and locate all noise-generating units such as air conditioning units in units which will minimize the effect on wildlife. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D. I _ UNAVOIDABLE ADVERSE IMPACTS: With all mitigation in place, noise would result from construction activities and, to a lesser degree, from occupation and use of the site following construction. It is unclear how herons would react to this impact. C. HAZARDOUS WASTE As discussed in the section on SOILS„Tract A was assessed for contamination resulting from dredged materials deposited on this site during the P-1 Pond construction. Cadmium and Total Petroleum Hydrocarbons were present in one soil sample at concentrations 18 05/28/91(MITDOCA) exceeding Washington State Department of Ecology's proposed industrial soil cleanup standards. WSDOE does not have clean-up standards for the other pollutants found on- site. These contaminants exhibited relatively low solubility and/or appeared localized. These are unlikely to migrate from the area of contamination. If the materials were covered either with an asphalt and/or concrete surface or major soils overlay, potential for local surface and groundwater quality degradation appears low. 49. In order to address the hazardous waste presence on Tract A, unless otherwise determined by WSDOE,the applicant shall seal the contaminated areas on Tract A with either an impermeable asphalt and concrete surface or an overlay of clean soil. Nexus: Mining Excavation & Grading Ordinance (4-10); Hazardous Materials Ordinance; City of Renton Comprehensive Plan I.B., I.M.; City of Renton Environmental Review Ordinance(4-6-22) 50. In order to prevent inadvertent future contact with contamination, the applicant shall note the location of any identified contaminated soils exceeding WSDOE clean-up standards, previously identified or found during construction on site on the as built drawings, specifying the levels of pollutants and the origin of the pollutants. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Mining Excavation&Grading Ordinance (4-10); and Hazardous Materials Ordinance; City of Renton Comprehensive Plan I.B., I.M. UNAVOIDABLE ADVERSE IMPACTS: None known at this time. D. RELATIONSHIP TO EXISTING USE The proposal suggests two four-story buildings and a single-storied building for Tract A. These buildings would fit with the office park uses to the east of the site in height, use, and design. However, the Metro Treatment Plant, directly south of Tract A, is undergoing environmental review for an expansion from its present treatment capacity of 72 million gallon per day to 108 mgd for projected year 2005 flows. Possible expansion beyond the year 2005 flow levels are also anticipated. The new Metro facilities would be visible from the upper stories of the two proposed four-story buildings on Tract A. Views of the facility from the proposed single-story building will be limited. During the construction period for wastewater improvements, high odor generation is possible. Although the Metro project will provide screening and odor control, it is unlikely that all impacts can be mitigated. These impacts are, clearly, not from the Black River Corporate Park, Phases VII and VIII proposal. Therefore, this project cannot mitigate. The Metro project will be required to mitigate its own impacts, as this document requires mitigation for the Black River impacts. However,the City of Renton believes that proper siting,design and buffering on the Metro site and the Black River site will reduce impacts for both projects. 19 05/28/91(MRDOCA) RECOMMENDATIONS: 51. In recognition of the adjacent Wastewater Treatment Plant, the applicant shall ensure that the multi-storied, buildings on Tract A are oriented away, to the greatest extent possible,from the Metro Plant. i Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33) POTENTIAL UNAVOIDABLE ADVERSE IMPACTS: The Metro Wastewater Treatment Plant DEIS states that even with Metro's proposed odor control plan, offensive odors may be generated from the treatment facility and extend beyond the boundaries of the site. These odors could occur as part of the sewage treatment plant's day-to-day operations and, but most likely, would occur from mechanical failures, emergencies, or system upsets. These odors have the greatest potential for crossing Tracts A and B when the prevailing winds are from the south and southwest. E. LIGHT AND GLARE Proposed actions from both Tracts A and B would require outdoor lighting for parking, sidewalks, and access roads, and indoor lighting for office space, hallways and foyer. The EIS notes that lighting for parking areas will be low level light, not visible from off site. The source of light from automobiles, potentially of greater significance, can be partially screened from the rookery through the use of dense foliage. Building lighting, of a diffused source, should also not adversely impact heron nesting some 600 feet or more away. Of greater concern is visible human activity within these buildings. RECOMMENDATIONS: 52. To reduce the intrusion of lighting to areas where it is not desirable, the applicant shall use down light standards. Multiple standards at lower height shall be preferred over taller standards with greater dispersion characteristics. Areas within 200 feet of the P-1 Pond or 600 feet of the Great Blue Heron rookery shall not have artificial illumination.' Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.; Valley Plan I.C.8. 53. Since Tract A has no existing dense tall-growing vegetation to buffer it, the applicant shall have landscape plans approved by the Development Services Division of the Planning/Building/Public Works Department for the following: a) dense evergreen vegetation along earthen berms, and b) the landscape plan for the parking area with the goal of reducing headlight glare from automobiles, prior to the site plan public hearing, consistent with measures 9, 10, 11, 12 and 13 of Section G. Nexus: Landscaping Ordinance (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 20 : 05/28/91(MRDOCA) 54. In order to reduce disruption caused by visible human activity, the applicant shall screen all windows facing and within 800' of the heronry, located above the 30- foot tall tree/berm. The screens shall be hoods or screens which substantially block heron views of human activity, particularly at dusk or night from the rookery. Hoods or screens may be removed once trees of sufficient height and density have grown above the height of the hooded windows. NOTE: The applicant is advised to consult with the Fire Department on the design and flame dispersion characteristics of hoods or screens before they are installed. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 55. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing, consistent with measure 37. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. UNAVOIDABLE ADVERSE IMPACTS: Even with all mitigation measures in place,,light and human movement will increase on-site originating from buildings, parking and automobile headlights. This increase could affect wildlife and heron on-site. F. HISTORIC AND CULTURAL As mentioned in the DRAFT and Final EIS, one five-acre area of Tract A was not covered in an earlier extensive cultural resource survey and archaeological excavation. The following recommendations address this area. RECOMMENDATIONS: 56. Prior to any site preparation or building activity in this area, to ensure that cultural resources are not disturbed, the applicant shall conduct a three phase archaeological survey (site inspection and surface coring), evaluation, and report of the five-acre western portion of Tract A. This survey shall be carried out by a professional archaeologist agreed upon by the State Office of Archaeology. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan IX.E 57. During excavation and construction, the applicant shall ensure that any excavations in this five-acre area that intrude upon native soils are monitored by a professional archaeologist certified by Washington State Department of Community Development, Office of Archaeology,during excavation. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan IX.E 21 05/28/91(MIIDOCA) 58. The applicant shall develop a contingency plan (notification to State Historic Preservation Office and Tribes) for actions to be taken in the event cultural resources are discovered during construction on either or both Tracts A and B. This plan shall be filed with the Development Services Division of the Planning/Building/Public Works Department prior to the issuance of any permits for site preparation or building construction-related activity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan IX.E G. TRAFFIC The EIS notes that the Traffic Impact Analysis for Valley 405 Business Park utilizing the Grady Way Corridor Transportation Improvement Study, shows that the trip generation of 5,180 vehicular trips per day from bothOTracts A and B would be 30-35 percent less than those assigned in the Grady Way corridor study model for which the developer provided mitigation. The project will, however, increase air quality impacts through the introduction of numerous car trips to the area. These are discussed in Section G, Air Quality,for both Tracts A and B. Other projects proposed for the area will also impact the surrounding streets. The proposed Metro Wastewater Treatment Plant Expansion (see DEIS for this project) and the proposed Rabanco Waste Reduction Facility (DEIS forthcoming) may combine with this project's traffic and existing traffic to reduce Levels of Service at several key intersections and increase peak hour counts. Construction traffic from these three projects may also occur during the same timeframe, i.e!, 1991-1996. Cumulatively, the impacts of this increased traffic could be significant, however, all impacts have not yet been compiled for the other projects. It is possible that ;mitigation measures will have to be coordinated between these projects if all are constructed. RECOMMENDATIONS: 59. In order to address potential cumulative impacts, the applicant shall have an approved Construction Transportation Plan which addresses possible construction traffic conflicts with the Metro Wastewater Treatment Plant and the Rabanco Waste Recycling Facility during their construction and possible solutions prior to site plan public hearing (or prior to the issuance of site preparation and/or building permits). The plan should consider the common use of a construction staging areas and construction phasing to reduce impacts. The plan shall be approved by the City of Renton Development Services Division. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 60. The applicant shall review, revise and implement a Transportation Management Plan for the Black River Corporate Park to increase its effectiveness. The revisions to the TMP shall include a provision to evaluate the goal identified in the existing.TMP (a reduction of 10 percent of SOV trips within two years following building occupancies). The plan must be approved by the City,with Metro Transportation Section review before occupancy of any building. 22 05/28/81(MITDOCA) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to address traffic impacts, the applicant shall submit a report to the City showing the results of the TMP evaluation formulated in the above mitigation measure. If targeted goals are not met within two years, additional incentives for HOV participation shall be installed (i.e., establishment of a vanpool operation). The incentives shall include parking fees, the purchase of vans for vanpools, and a guaranteed ride home program for registered vanpool users.. The subsidy shall continue until the 10 percent goal is reached. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic impacts, the applicant shall implement a program to provide a free one month bus pass to all new employees(on a five employee per 1,000 sf basis) at the time of each new tenant occupancy in any of the buildings as a part of their TMP. The passes should be for peak hour,two zones, maximum requirement. Prior to site plan public hearing, the applicant shall submit a plan for this measure acceptable to the Development Services Division. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to address traffic impacts, the applicant shall, as a part of their TMP, agree to distribute site-appropriate transit and ridesharing information to new tenants and annually to all tenants. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to display site-appropriate transit and ridesharing information in prominent public locations. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to appoint a Transportation Coordinator to promote and coordinate the use of public transportation and high occupancy vehicles. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to reduce the traffic impacts, the applicant shall design and implement a parking management program which provides preferential parking for high occupancy vehicles. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 23 05/28/91(MITDOCA) In order to reduce the traffic impacts, the applicant shall ask tenants to promote an alternative work hour program in order to reduce peak hour trips. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 61. In order to address the impacts of traffic, the applicant shall establish a performance goal for high occupancy vehicle use. This goal and implementation of it shall be reviewed by the City of Renton after two years of building occupancy. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 62. In order to reduce the impacts,of traffic,the applicant shall conduct transportation surveys/monitoring to determine participation and interest in HOV and bus transportation. These surveys' shall be reviewed by the City of Renton after two years of building occupancy. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 63. In order to reduce the impacts of traffic,the City and the applicant shall review the Grady Way Transportation Study to determine the option for crediting the applicant for previous improvement contributions. Based on earlier contributions and trips expected from this development, the applicant shall pay $592,790 for 3,487 trips not previously mitigated under earlier contributions. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 64. In order to reduce traffic impacts, the applicant shall ensure that truck and wheel washing must be accomplished on-site after each haul trip. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I-B NOTE TO APPLICANT: As required by City of Renton ordinance, the applicant shall abide by hauling hours for large construction vehicles to 7:30 a.m. between 8:30 a.m.and 3:30 p.m. and after 6:30 p.m. NOTE TO APPLICANT: In order to reduce the impacts of traffic, the applicant shall ensure that large construction vehicles shall follow prescribed haul routes. These routes shall be conceptually formulated and submitted at site plan review. The final routes shall be submitted to and approved by the City of Renton prior to the issuance of construction permits. Nexus: City of Renton Environmental. Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 24 05/28/91(MfTDOCA) UNAVOIDABLE ADVERSE IMPACTS: The potential, unavoidable adverse traffic impacts associated with these developments will be further defined in the Metro Wastewater Treatment Plant and the Rabanco Waste Reduction Facility draft EISs. H. PARKS AND RECREATION The site presently provides passive recreational opportunities for workers in nearby office buildings and the general public. Wildlife-watching, jogging, and walking are the primary uses. If the site is developed, public access to the area would be limited, and the loss of wildlife habitat would reduce some of the passive recreational values of both Tract A and B. RECOMMENDATIONS: 65. In order to mitigate the need for additional recreation and displaced opportunities, the applicant shall construct a pedestrian trail, beginning at Oakesdale Avenue and follow the earthen berms along the west side of the applicant's property, bordering Springbrook Creek and the P-1 Pond. The applicant shall include a viewing platform located approximately 550 feet from the heron colony. The applicant shall continue the trail west on the berm to the west end of the property and reconnect with the sidewalk system at Oakesdale Avenue. (See Figure 3-1, 3- 2, and 3-3 FEIS.) The maintenance of these areas shall be the responsibility of the property owners into perpetuity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Comprehensive Parks Plan; City of Renton Comprehensive Plan VII-H; I-A; 66. To address the loss of recreational use and the site's proximity to wildlife, the applicant shall provide an easement or dedication with terms satisfactory to the City, ensuring year-round public access to and along the pedestrian trail. The trail shall be screened from the P-1 pond by vegetation. A fence shall be provided between the P-1 pond and the trail to limit human intrusion into the wildlife area. The easement or dedication shall be provided prior to the issuance of any site preparation and/or building permits for development on either Tract A or B. Nexus: City of Renton Environmental Review Ordinance (4-6-22) Comprehensive Parks Plan; City of Renton Comprehensive Plan VII-H; CUMULATIVE IMPACT The continued conversion of land in the area to office park and industrial uses will result in the following cumulative impacts: Soils will be disturbed and moved onto and off development sites; erosion will occur and silt and sedimentation can be expected to increase in the P-1 Pond. Wetlands may continue to be lost; air quality is expected to decline with these projects increasing incrementally the carbon monoxide and ozone levels; wildlife habitat and associated species will continue to decline; and noise levels are likely to increase as will traffic. 25 05/28/91(MITDOCA) NOTE TO APPLICANT: As additional development occurs in the area, mitigation measures should be established and coordinated by the City of Renton for each project to minimize the cumulative adverse effects of the proposals. RECOMMENDATIONS: 67. In order to address potential cumulative impacts, the applicant shall develop a mitigation plan for new construction in the area to eliminate excessive traffic usage of Oakesdale Avenue. Nexus: City of Renton Environmental Ordinance (4-6-22); City of Renton Comprehensive Plan VII.1.A;Valley Policy Plan I.C.5. UNAVOIDABLE ADVERSE IMPACTS: As the area urbanizes with this and iother projects, incremental impacts will be felt on air quality, water quality, wildlife habitat and wetlands. Odor and aesthetic impacts may be expected from the Metro Wastewater Treatment Plant Expansion across Oakesdale, and noise, air quality and traffic are expected to increase with the proposed Rabanco facility. ' I ' I i I 26 05/28/91(MITDOCB) MITIGATION DOCUMENT BLACK RIVER CORPORATE PARK TRACT B OFFICE BUILDINGS PHASES VII/VIII The Environmental Review Committee for the City of Renton issued a Final Environmental Impact • Statement for the Black River Corporate Park,Tracts A and B on March 27, 1991. The EIS for this project has identified a number of possible mitigation measures for impacts that were considered to be significant or potentially significant (as defined by quantitative measures whenever such measures were found to • exist). These measures, and others which the responsible official may determine are warranted to protect the environment,are the subject of this mitigation document. A number of chapters of WAC 197-11 speak directly to the imposition of mitigation measures. The relevant chapters are cited below. WAC 197-11-060 Content of Environmental Review states that agencies shall "carefully consider the range of probable impacts, including short-term and long-term effects." Impacts shall include "those that are likely to arise or exist over the lifetime of a proposal" or, in some cases, even longer. WAC 197-11-330 Threshold Determination Process requires the responsible official to take into account the following when determining whether a proposal has significant adverse impacts: "The same proposal may have significant adverse impact in one location but not in another location;" "the absolute quantitative effects of a proposal are also important and may result in a significant adverse impact regardless of the nature of the existing environment,"and "Several marginal impacts when considered together may result in a significant adverse impact." In reaching such a decision, SEPA states that the responsible official shall not balance whether the beneficial aspects of a proposal outweigh its adverse impacts, but rather shall consider whether a proposal has any probable significant adverse environmental impacts under the rules stated above. WAC 197-11-448 Relationship of EIS to other considerations. (1) SEPA contemplates that the general welfare, social, economic, and other requirements and essential considerations of state policy will be taken into account in weighing and balancing alternatives and in making final decisions.... The EIS provides a basis upon which the responsible agency and officials can make the balancing judgement mandated by SEPA, because it provides information on the environmental costs and impacts. WAC 197-11-768 defines mitigation as: 1) avoiding the impact altogether by not taking a certain action or parts of an action; 2) minimizing impacts by limiting the degree or magnitude of the action and its implementation, by using appropriate technology, or by taking affirmative steps to avoid or reduce impacts; 3) rectifying the impact by repairing, rehabilitating, or restoring the affected environment; 4) reducing or eliminating the impact over time by preservation and maintenance operations during the life of the action; and 5) compensating for the impact by replacing enhancing, or providing substitute resources or environments,and/or monitoring the impact and taking appropriate corrective measures. WAC 197-11-660 further states that decisionmakers may impose mitigation measures designed to mitigate the environmental impacts subject to the following limitations: A) mitigation measures, or denials, shall be based on policies, plans, rules or regulations formally designated by the agency; B) mitigation measures shall be related to specific adverse environmental impacts clearly identified in an environmental document on the proposal and shall be stated in writing by the decisionmaker; C) mitigation measures shall be reasonable and capable of being accomplished; D) responsibility for implementing mitigation measures may be imposed upon an applicant only to the extent attributable to the identified averse impacts of its proposal. Voluntary additional mitigation measures may occur; _E) before requiring mitigation measures, agencies shall consider whether local, state or federal requirements and enforcement would mitigate an identified significant impact; and F) to deny a proposal under SEPA, an agency must find that: 1) the 1 05/28/91(MITDOC1 proposal would be likely to result in significant adverse environmental impacts identified in a final or supplemental environmental impact statement prepared under this chapter; and 2) reasonable mitigation measures are insufficient to mitigate the identified impact. In imposing mitigating measures, the Environmental Review Committee considered environmental impacts that are expected from the project itself. In addition, several other independent projects are undergoing environmental review in the same geographical area. These include the Metro Wastewater Treatment Plant Expansion, the Rabanco Recycling Facility, and Phase VI of the Black River Corporate Park. The cumulative impacts of these projects have been considered in the formulation of this mitigation document, and will be considered in the mitigation documents of the other projects under environmental review. SEPA states that: "After its decision each agency shall make available to the public a document that states the decisions. The document shall state the mitigation measures, if any, that will be implemented as part of the decisions, including any monitoring of environmental impacts." (WAC 197-11-660(1)(b)). This document is intended to meet this requirement. THE PROPOSED ACTION The proposed action of First City Development Corp. (FCDC) is the construction of a four-year phased project, including three one to four-story office buildings on 12.07 acres of Tract A, and three four to seven- story buildings on the 15.7 acre Tract B, Renton, Washington. Tract A will also include surface parking to accommodate the buildings on Tract A. Tract B will include the construction of a three-story parking structure and associated surface parking. As a result of the State Environmental Policy Act (SEPA) scoping process, comments were received from governmental agencies and interested citizens regarding the major issues that needed to be analyzed in this EIS. Those issues included the following: topography and soils; foundation; seismic; air quality; surface water movement/quantity;water quality runoff; vegetation; shoreland/wetlands; wildlife resources; unique terrestrial resources; noise; hazardous waste; relationship to existing land uses; relationship to plans, zoning and shorelines; light and glare; historic and cultural resources; traffic; parks and other recreational facilities;and cumulative impact. I I This EIS also contains an original study on the Great Blue Heron, an urban wildlife resource, based on primary research and empirical evidence gathered from field visits and a compilation of secondary research. This research is entitled "Revised Life History and Effects of Human Disturbance on Great Blue Heron Colonies," Appendix B. A second empirical study is Appendix C, noise monitoring data, July 20, 1990 Geotechnical drilling. A Hazardous Waste Study was also completed on this property and is appended to the EIS by reference. It will be transmitted to the Renton Hearing Examiner and is available for public viewing at the City of Renton Development Planning Division. Finally,the EIS appends, by reference,the following documents: 1974. Auburn Interceptor EIS *1980. U.S. Environmental Protection Agency - Wastewater Management Plan for the Lake Washington/Green River Basins, EIS and Appendices. Report No.910/9-80-077 1981. U.S. Environmental Protection Agency - Final EIS on the Wastewater Management Plan for the Lake Washington/Green River Basins. 1983. Draft Supplemental EIS for the Puget Sound Facilities Engineering Report. 1983. Final Supplemental EIS on the Puget Sound Facilities Engineering Report. • 2 05/28/91(MITDOCB) 1983. U.S. Environmental Protection Agency - Municipality of Metropolitan Seattle/Draft and Final EISs, Sludge Management Plan. *1984. Final Supplemental EIS on the Renton Effluent Transfer System Alternative for the Wastewater Management Plan, Lake Washington/Green River Basins. 1984. Public Comments on the Draft Supplemental EIS on the Renton Effluent Transfer System Alternatives for the Wastewater Management Plan, Lake Washington/Green River Basins. *1985. Draft EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. *1985. Final EIS on the Plan for the Secondary Treatment Facilities and Combined Sewer Overflow Control. 1986. Final Supplemental EIS for Secondary Facilities and Combined Sewer Overflow Control. 1988. Final Supplemental EIS for West Point Secondary Treatment Facilities. The content of the EIS is determined by the Lead Agency (in this case, the City of Renton) based, in part, on key sections of the SEPA rules(197-11-402, 408,430, and 440) together with results of the EIS scoping process. The Draft Black River Corporate Park EIS included an analysis of the proposed action and each of the alternatives (Al -no action; B2-a single seven-story building; and B3-no action). ELEMENTS OF THE ENVIRONMENT le TRACT B-MITIGATION CONDITIONS A. TOPOGRAPHY/SOILS TOPOGRAPHY: Cuts and fills are expected on this site, but would be balanced to the extent possible. However, due to the elevations of the site, approximately 35,800 yards of fill would be needed to raise the grade to desired grade. No fill would be placed in either the drainage way at the north end of the site or in the remnant of the Black River channel in the east portion of the site. Grading for all three phases would occur during the first phase of the project. The EIS notes that all construction impacts, including fill and grade, could have an adverse impact on the heron colony and other wildlife. Similar to Tract A, this site had been previously filled during construction of the P-1 Pond. The addition of fill to the site will not be inconsistent with land development policies in the Valley Plan. Because no dredge spoils were placed on this site from the P-1 Pond forebay, no contamination sampling was required. RECOMMENDATIONS: 1. In order to address the construction impacts on wildlife and the nearby heron rookery, the applicant shall do no grading or other outdoor construction during 3 05/28/91(MITDOCB) the period from February 1 through July 1 within 800 feet of the heron colony, and from July 1 through August 1;within 600 feet. (See definition of "major outdoor construction"and"interior work"on p.3-24 of the FEIS.) Nexus: City of Renton Mining, Excavation and Grading Ordinance (4-10); Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.M.2 2. In order to ensure that no contamination is brought on Tract B, the applicant shall use only uncontaminated soils able to support a trail, side slopes and native vegetation for the proposed berm. Soils shall be reviewed by a qualified soils engineer and shall be approved by the Planning/Building/Public Works Department. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I-D, Mining, Excavating and Grading Ordinance (4-10) 3. In order to ensure that construction impacts do not adversely affect the wildlife on Tract B, the applicant shall phase the grading and filling consistent with the phasing for the buildings. (See discussion on vegetation.) Nexus: Mining, Excavating and Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.C., I.D. UNAVOIDABLE ADVERSE IMPACTS: i . Placement of 35,800 yards of fill on Tract B and an additional amount to construct earthen berms required as mitigation for impacts on unique terrestrial species. B. FOUNDATION The EIS notes that any structure over two stories high will need pile supported foundations extending to the dense sands and gravels underlaying the site. Either driven steel piles or auger cast-in-place piles are considered technically possible. However, the driven steel pile construction is noisier and causes more vibrations than auger pile construction. RECOMMENDATIONS: 4. In order to address the cumulative construction noise and vibrations impacts on wildlife on Tract B, the applicant shall only use auger cast-in-place construction techniques in lieu of pile driving. Nexus: City of Renton Mining, Excavation, and Grading Ordinance (4-10); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.; I.D. C. SEISMIC The EIS notes that an evaluation of the liquefaction potential of the solids in the vicinity of the project site was performed in 1983 for the expansion of Metro's Wastewater Treatment Plant. It was concluded that the potential for liquefaction at this site is quite low. The soil 4 05/28/91(MRDOCB) in Tract B contains plastic silts and medium dense sands which diminish the potential of liquefactions (Earth Consultants 1988). It was determined that seismic impacts to the site may be mitigated by good building practices and techniques. NOTE TO APPLICANT: Design of buildings shall follow UBC standards. RECOMMENDATIONS: No additional mitigation measures specified. D. AIR QUALITY The Puget Sound Air Pollution Control Agency is responsible for controlling stationary sources of air pollution in the central Puget Sound region, while WSDOE is responsible for monitoring carbon monoxide(CO) levels. None of the monitoring sites for these agencies is close enough to the study area to be considered representative of the CO concentrations in the project area. Given the current density of land use development and the existing roadway network, existing violations of the CO standards are considered unlikely in the vicinity of the project area. The applicant will be asked to reduce SOV trips to and from the site through a Transportation Management Plan (TMP) (see transportation section of this document). Reduction in auto trips serves to reduce emissions which contribute to lowered air quality. The EIS notes that the Carbon Monoxide concentrations in the garage could exceed the maximum one hour and eight hour ambient standards in the absence of adequate open area and two exits. Free air flow through the garage would disperse the CO build up. Building design must accommodate air flow, providing for a dispersion of the pollutants to the outside air. RECOMMENDATIONS: 5. To protect the wildlife from light, noise, and movement of vehicles and persons inside or on the roof of the garage, and yet provide for air dispersion, the lower levels of each garage deck shall be a minimum of 55 percent open to the outside. The side facing the heronry, however, must be screened to control light and glare. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D. 6. To provide air dispersion, and protect the wildlife from the distraction of vehicles and persons, the applicant shall construct the garage so that the top level is open to the sky with landscaping or design elements for reduction of light and glare. The north exterior wall must restrict light, glare, noise and movement, substantially removing them from impacting the heronry. Landscaping and plantings shall be used to accomplish screening on the remainder of the roof. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D.;City of Renton Green River Valley Policies Plan I.C.8. 7. To protect the wildlife from impacts and yet allow for air circulation, the applicant shall ensure that exits from the garage shall be on the sides of the structure furthest away from the heronry. 5 05/28/91(MRDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D.; City of Renton Green River Valley Policies Plan I.C.8. E. SURFACE WATER MOVEMENT The EIS notes that the primary impacts of the proposed projects on Tract B would result from the increase In impervious surface and the resulting change in runoff volume and timing. Runoff is proposed to be routed through biofiltration swales to the P-1 Pond. Due to excess capacity of the P-1 channel,(significant impacts to the pond from the additional flows are not anticipated. However, the City will review detailed drainage plans and any previous agreements regarding discharge from the Corporate Plan properties to the P-1 pond during the site plan approval process. The P-1 channel and pond were constructed on land dedicated to the City by First City Development Corporation. The pond and channel are regional detention/retention facilities, used for flood control for the Green River Valley area. The management of this area, (e.g. water levels, plantings, sediment dredging) affects the regional flood control, surface water volumes, vegetation or site, and wildlife in the area. Three entities are involved in the management of the area; the Soil Conservation Services (SCS), King County Surface Water Management Division, and the City of Renton. Adjacent shoreline owners also affect the management of the pond. First City Development Corporation is one of these owners. NOTE TO APPLICANT: In order to address surface water impacts, the applicant must comply with City of Renton Public Works Drainage requirements and construct in a manner consistent with the recently adopted King County Surface Water Design Manual. The applicant must calculate runoff volumes from the site, prepare a Level I downstream analysis and design the swales, using methods. outlined in the Surface Water Design Manual. In order to address detention/retention compliance on Tract B, the City will review the need for a wet pond system prior to discharge of runoff to the P-1 Pond based on review of existing agreements as part of the site plan approval. RECOMMENDATIONS: 8. In order to reduce surface water impacts, FCDC or subsequent owners,along with the City, Metro, King County, SCS,and other abutting landowners shall participate in the preparation and implementation of a management plan for the P-1 Pond, under the leadership of the City of Renton, as defined in Section 3.4.1 of the final EIS. Nexus: City of Renton Environmental Review Ordinance (4-6-22), Surface and Storm Water Drainage Ordinance; City of Renton Municipal Code (4-22); City of Renton Comprehensive Plan I.A., I.C., I.G., I.H., I.I.; City of Renton Green River Valley Plan I.C.4. SIGNIFICANT UNAVOIDABLE ADVERSE IMPACTS: Even with best management practices and required surface water run-off plans, the volume of stormwater runoff from Tract B will increase with development. The Level I downstream analysis required by the City will determine impact of that increase. Cumulative impacts to the pond from adjacent land uses and downstream land uses are expected. . 6 05/28/91(MffDOCB) F. SURFACE WATER QUALITY The EIS notes that Tract B is adjacent to the P-1 Pond, Springbrook Creek, and a remnant of the old Black River channel. The primary construction related impact would be the import and placement of large amounts of fill. The potential for erosion is greatest along the eastern portion of the site where fill would be placed adjacent to the old Black River Channel and the western portion of the site adjacent to Springbrook Creek. Depending on weather conditions, and water level in the channels, some sediment could be carried to the P-1 Pond. Following construction, water quality impacts would result primarily from pollutant associated with vehicles and landscaping activities. Both the wetlands in the old Black River Channel and the P-1 Pond could be impacted. Hydrologic mitigation measures would be determined as part of the City's review of the detailed drainage plans for the project. Biofiltration swales, oil/water separators and other measures associated with the Storm Water Design Manual would be implemented. RECOMMENDATION: 9. In order to reduce surface water impacts,the applicant shall prepare and submit a conceptual Erosion Control Plan to the City, as specified in the Draft and Final EIS (Section 3.4.2 Mitigation Measures) prior to issuance of construction permits. Based on this conceptual plan, additional mitigation measures will be defined by the City during site plan review. At a minimum: ▪ the applicant shall install and maintain oil/water separators;and ▪ install biofiltration swales per City and WSDOE requirements and recommendations. Based on City review of the drainage plan, the applicant may be required to treat runoff from paved ares in a wet pond prior to discharge to the P-1 Pond. As mentioned under Water Quality, the applicant shall participate in the management plan for the P-1 as defined in Section 3.4.1 of the Final EIS. A final erosion control plan shall be submitted prior to issuance of construction permits. Nexus: City of Renton Land Clearing Ordinance (4-9); Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.H., I.F., I.J., I.A.; Green River Valley Policy Plan I.C.4.; Surface and Storm Water Drainage (4-22) UNAVOIDABLE ADVERSE IMPACTS: Even with the use of swales, wet ponds and implementation of an erosion control plan, 20-40 percent of suspended solids and metals, 17 to 33 percent of oil and grease, and 15 to 100 percent of the nutrients originating from the project site, as with all project sites,will eventually enter the receiving water. G. VEGETATION The draft and final EIS present a list of plant species occurring on the site. Tract B consists of mature black cottonwood trees, some of which are approximately 100 to 130 feet in height, alder, an extensive shrub zone of Scot's broom, grass, and emergent wetland vegetation associated with the old Black River channel. Under the proposal, approximately 10.8 acres would be converted to a developed site. None of the species or 7 I I� 05/28/91(MRDOCB) the vegetative types on Tract B are considered sensitive, threatened, or endangered in Washington. However, the vegetation does provide habitat for wildlife. The mature cottonwood trees provide some screening of the site from the heronry. RECOMMENDATIONS 10. In order to reduce the impact of vegetation removal and provide screening, the applicant shall participate with the City of Renton, Metro, King County and SCS in a shared-cost coordinated existing planting program for the portion of the shorelines of the P-1 Pond and Springbrook Creek along Tract B. Nexus: Shoreline Master Program; City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A.; Valley Plan I.C.4., I.C.8. 11. In order to reduce the impact of human intrusion and mitigate the loss of vegetation, the applicant shall plant deciduous trees and shrubs (on the applicant's and City-owned property between the shorelines of the P-1 Pond and Springbrook Creek and the berm in Recommendations 15 and 16), to provide additional screening, visual and biological diversity, and wildlife habitat using species identified in Section 3.5.1 of the Final EIS. The plantings shall be integrated with the existing vegetation on the side slopes between Tract B and the P-1 Pond. Planting plans shall be submitted to the Development Services Division of the Planning/Building/Public Works Department during site plan review. This buffer shall be provided before major site preparation or construction activities �I occur. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. 12. The applicant shall increase thel setback distance on Tract B from 450 specified in the FEIS to 600 feet from the heron colony for all new development. (This will result in the retention of an additional 1.5 acres of native vegetation, thereby ,I reducing the permanent loss of habitat to 9.3 acres.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A.,Valley Policy Plan 1.6 13. In;order to mitigate the loss of 10.8 acres of vegetation and wildlife habitat, the applicant shall plant native lowland trees and shrubs between the FDCD property �! line and the 600 foot setback, on all lands not covered by Measure 11 using the species specified in Section 3.5.1 of the Final EIS. This buffer shall be provided before major site preparation' or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. The landscape plan for this element shall be submitted to the DSD during site plan review. The applicant shall not grade or construct until the plan is approved and implemented. Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., I.J.;Valley Plan I.C.4., I.C.8. 14. In order to mitigate the loss of vegetation, the applicant shall submit a landscape plan for the entire site for site plan approval, excluding the area discussed in 8 05/28/91(MITDOCB) Recommendation 10, 11, 12, and 13. Submitted by the time of construction permit, it shall include a detailed planting plan and specifications to mimic native plant community composition and structure. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. Nexus: Land Clearing (4-9); Landscaping; City of Renton Environmental Review Ordinance (4-6-22); Valley Plan I.C.4.; City of Renton Comprehensive Plan I.D., I.E., I.A. 15. In order to reduce the impact of vegetation removal, human intrusion and to create wildlife screening, the applicant shall construct, within and along the 600 foot setback from the nearest heron nest tree (in the main heronry) on Tract B, a benched 10-foot high earthen berm and trail and vegetate with a 20 foot tall view obscuring screen of native evergreen trees and native shrubs in a double staggered planting row. Berm and tree height are intended to achieve a 30 ft. screen. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (See Figure 3-1, 3-2 FEIS.) This condition must be implemented before any building construction. Nexus: Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6- 22); City of Renton Comprehensive Plan I.D., I.F, I.A. 16. In order to mitigate for vegetation removal and to provide additional wildlife screening between the Tract and the P-1 pond and channel, the applicant shall construct a five foot high earthen berm and trail along the remainder of the shoreline (not covered in Measure 15) along Springbrook Creek and the P-1 Pond. The applicant shall provide a visual buffer between the heron rookery and development by spacing six to eight foot view-obscuring evergreen trees and shrubs on the berm benches in a double staggered planting row (see mitigation measures defined in Section 3.5.3 of the FEIS) prior to further construction or grading. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (See Figure 3-1,3-2 FEIS.) Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A., I.C., III.C., III.D.;Valley Plan I.C.S. 17. In order to reduce the impact on vegetation, the applicant shall ensure optimal plant survival and plant growth on all site landscaping by requiring irrigation and maintenance on FCDC property. The applicant shall present a surety device of 10 percent of the value of all new landscaping materials for a minimum of five years for irrigation and maintenance, to Development Services Division of the Planning/Building/Public Works Department and the City Attorney. Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance(4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.C., I.A. 18. The applicant shall, in order to preserve wildlife habitat and screening, submit a landscaping plan to maintain all the mature cottonwoods, specifically along the historic Black River channel, at the northern portion of the site, and on other portions of the site (e.g., near the south portion of the site). Mitigation for loss of 9 II � 05/28/91(MITDOCB) trees shall be identified in the Landscape Plan which shall particularly focus on additional buffering and screening vegetation for any such loss. Any substantial alternative of existing screening must be replaced before development can continue. (See Ordinance No.4219.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Land Clearing and Tree Cutting Ordinance (4-9); Site Plan Review Ordinance (4-31-33), City of Renton Comprehensive Plan I.A., I.C., I.D., I.E;Valley Plan I.C.8., I.B. 19. The applicant shall plant additional native shrubs and trees along the western boundary of Tract B in the area designated as "a potential heron flight zone," to reduce the impact of human intrusion in this critical area prior to any substantial construction or grading. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscaping Ordinance (4-31-34); Land Clearing&Tree Cutting Ordinance (4-9) UNAVOIDABLE ADVERSE IMPACTS: The proposed action would result in the permanent loss of 9.3 acres of vegetation on Tract B with mitigation measures. H. WETLANDS The impacts of the proposal would include the loss of 0.04 acres of wetland which would be filled for office buildings and parking areas. No fill would be placed in the Black River channel wetland under the proposal or alternatives. However, the channel's use as a biofiltration swale would change the composition of vegetation due to the increase in the amount of water in the system. Also, without buffers, this area could be shaded from the buildings and would therefore, be expected to have vegetative changes due to the shading. RECOMMENDATIONS: 20. The applicant shall, in order to protect an existing wetland from human and vehicular intrusion, establish a buffer around the old Black River channel wetland averaging 50 feet in width with no part being less than 25 feet in width. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E;Valley Plan I.C.8. 21. The applicant shall, in order to mitigate the loss of wetlands elsewhere on the site, create new or enhance existing the wetlands adjacent to the old Black River channel on Tract B. This shall be done by submitting a Wetland Enhancement Plan to the Development Services Division of the Planning/Building/Public Works Department prior to the public hearing on site plan. Final plans must be approved before the issuance of any permits for substantial development, including site preparation on this tract. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E;Valley Plan I.C.8. 10 II 05/28/91(M(TDOCB) 22. The applicant shall develop and implement a drainage plan with biofiltration prior to discharge of runoff into the wetland. A conceptual plan shall be approved by the Storm and Surface Water Utility prior to Site Plan review. Final plans must be approved prior to issuance of site preparation/construction permits. Nexus: Surface & Storm Water Drainage Ordinance (4-22); City of Renton Environmental Review Ordinance (4-6-22) WILDLIFE RESOURCES The EIS presents a list of birds, mammals, amphibians, and reptiles observed or potentially occurring in the project area, including the P-1 Pond and the adjacent riparian areas. Thirty-six species of mammals are known to occupy habitat similar to that which occurs in the vicinity of the project area. Six species of mammals, or their signs, have been observed on the project site or in the immediate vicinity. As many as 85 species of birds, as well as 19 species of reptiles and amphibians, may occur in the vicinity of the project area. Small mammal trapping was carried out on Tract A and B during July 2-4, 1990. Six deer mice were trapped on Tract B (during 30 trap nights) and one on Tract A (during 48 trap nights). This indicates a lower population of rodents on Tract A due to the sparser vegetative cover and duff layer on it. RECOMMENDATIONS: 23. The applicant shall revise their site plan to show an increase in the setback distance on Tract B from the heron colony to development from 450 feet as defined in the DEIS to 600 feet, in order to reduce the intrusion of human and vehicular activity on the heronry. This revision must be submitted at the Site Plan review stage. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.D.; I.E; I.A., Valley Plan I.C.8. 24. In order to mitigate the loss of vegetation and habitat,the applicant shall develop a detailed planting plan for the entire site with specifications which mimic native plant community composition and structure by the time of construction permit approval. The plan shall indicate the availability of the species proposed and shall be approved by the Development Services Division of the Planning/Building/Public Works Department. (Same as Measures 10, 11, 13 and 14.) Nexus: Land Clearing (4-9); Landscaping (4-31-34); City of Renton Environmental Review Ordinance (4-6-22);Valley Plan I.C.4.; City of Renton Comprehensive Plan I.D., I.E., I.A., I.J., I.C., I.G.;Shoreline Master Program 25. In order to mitigate the loss of 10.8 acres of vegetation and wildlife habitat, the applicant shall plant native lowland trees and shrubs between the FCDC property line and the 600 foot setback using the species specified in Section 3.5.1 of the Final EIS. This buffer shall be provided before major site preparation or construction activities occur and must be approved by the Development Services Division of the Planning/Building/Public Works Department. The landscape plan 11 05/28/91(MRDOCB) I it for this element shall be submitted to the DSD during site plan review. The applicant shall not grade or construct until the plan is approved and implemented. (Same as Measure No. 13.) Nexus: Shoreline Master Program; Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., I.J.;Valley Plan I.C.4., I.C.B. 26. In order to reduce the impact of vegetation removal, human intrusion and to create wildlife screening, the applicant shall construct, within and along the 600 foot setback from the nearest heron nest tree (in the main heronry) on Tract B, a benched 10-foot high earthen berm and trail and vegetate with a 20 foot tall view obscuring screen of native evergreen trees and native shrubs in a double staggered planting row. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (Same as Measure 15.) Nexus: Land Clearing (4-9); City of Renton Environmental Review Ordinance (4-6- 22); City of Renton Comprehensive Plan I.A., I.D., I.C., I.E.;Valley Plan I.C.B. 27. In order to mitigate for vegetation removal and to provide additional wildlife screening between the Tract and the P-1 pond and channel, the applicant shall !construct a five foot high earthen berm and trail along the remainder of the !shoreline (not covered in Measure 16) along Springbrook Creek and the P-1 Pond. The applicant shall provide a visual buffer between the heron rookery and 'development by spacing six to eight foot evergreen trees and shrubs on the berm benches in a double staggered planting row of evergreen fir trees (see mitigation !measures defined in Section 3.5.3 of the FEIS) prior to further construction or II !grading. The requirement must be completed and verified by the Development !Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. (Same as Measure 16.) !Nexus: Land Clearing (4-9);Landscaping (4-31-34); City of Renton Environmental ',Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D., I.E., I.A., I.C., !III.C., III.D.;Valley Plan I.C.B.1 28. In order to reduce the impact of the site on adjacent wildlife, the applicant shall 'provide access through the tract on the new trail running along the top of the !berm from Naches Avenue SW through the Tract and out to Oakesdale Avenue !SW again. (See Measure 16.) i I i Nexus: City of Renton Comp Parks Plan; City of Renton Environmental Review ;I • Ordinance (4-6-22);City of Renton Comprehensive Plan I.A., I.C., I.H. 29. !The applicant shall construci a fence between the trail established in Measures 26 &27 and Springbrook Creek and P-1 Pond to prevent human intrusion into wildlife habitat areas. Plans for these improvements shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to issuance of site preparation/construction permits. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.HI,I.I., I.J., I.K;Valley Plan I.C.B. 12 ' � �I 05/28/91(MRDOCB) 30. In order to reduce human intrusion into wildlife habitat areas along the edges of the P-1 pond, the applicant shall provide for the installation of gated barriers on the City-owned maintenance roadway easement, perpendicular to the easements. The barriers shall be installed at the east and west access points of the roadway. Future maintenance will be the responsibility of the City of Renton. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.H., I.I., I.J., I.K.;Valley Plan I.C.8. 31. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with nonglare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectively. Nexus: Environmental Review Ordinance(4-6-22); Site Plan Review Ordinance (4- 31-34);Valley Plan I.C.8.;Comprehensive Plan I.A., I.D. UNAVOIDABLE ADVERSE IMPACTS: Loss of 9.3 acres of wildlife habitat on Tract B. In addition,there will be a short term disturbance to wildlife during the construction phase of the project. J. UNIQUE TERRESTRIAL RESOURCES (Great Blue Herons) The EIS notes that guidelines have been presented to reduce the impact on the Great Blue Heron Colony present in the riparian area north and east of Tract A and north of Tract B. The guidelines have included setbacks, berms, plantings, reduced construction scheduling and phasing, reduced building heights, hooded windows, building colors and monitoring. These measures are listed in detail below. However, while these measures are prudent, public precautions, it is not clear whether they will be sufficient to mitigate the construction and operational aspects of the proposal on the herons. Monitoring programs, provided as part of this document, will provide added scientific evidence of the success or failure of the measures. Adjustments can then be made based on these empirical observations. It is not possible to completely avoid impacting the herons, their flight patterns, their foraging areas, and their nesting seasons unless no development were to occur. Their tolerance to increased human intrusion is not known. RECOMMENDATIONS: 32. The applicant shall, in order to buffer the wetlands and the heron, increase the setback distance on Tract B from the heron colony(along a radii from nearest nest tree)to development from 450 feet as shown in the Final EIS to 600 feet. In order to minimize the impacts on the wildlife, the applicant shall establish this as a no intrusion zone, e.g., no parking, building or accessory use, except for required plantings maintenance, for this portion of Tract B lying within 600 feet of the nearest heron nest tree. The applicant shall submit a site plantings plan (established in Measures 10, 11, 12, 13, 14, & 15). All planting or other activity shall comply with the time limitation set forth for construction activity within 800 feet of the heron colony. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E.;Valley Plan I.C.8. 13 05/28/91(MITDOCB) 33. Th'e applicant shall either: 1) install a 10 foot high earthen berm as previously required for Tract A or 2) backfill to the wall of the parking garage to a bermed height of 10 feet, (in order to incorporate the trail and viewing platform) and then vegetate either improvement with minimum 20 foot tall view obscuring screen of evergreen trees and native shrubs in a double staggered planting row. This requirement must be completed and verified by the Development Services Division of the Planning/Building/Public Works Department before any further construction or grading occurs. The applicant shall submit a landscape plan for these.improvements to the Development Services Division prior to site plan approval. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan.I.A.; I.D.,Environmental 34. The applicant shall, in order to buffer the unique Terrestrial Species, limit Tract B buildings to four-stories (57 feet) between 600 and 800 feet back from the heron colony and five-stories(71 feet) beyond 800 feet. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33),City of Renton Comprehensive Plan I.A.; I.D.; I.E; I.J, Valley Policy Plan 1.13 tl 35. The applicant shall, in order to buffer the heron and wildlife, do major outdoor construction on the berm and landscaping on only one of the three proposed Tract B buildings - either D, E or F - during the first construction season (during the period from July 1 to February 1). After the first year,the parking garage may be constructed in phases, if desired, with interim parking provided on Tract A as necessary during the remainder of the construction seasons. After the first year, the two remaining buildings may be constructed. Nexus: City of Renton Envir i nmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E;Valley Plan I.C.8. 36. The applicant shall, in order Ito preserve wildlife habitat and screening, submit a landscaping plan to maintain all the mature cottonwoods, specifically along the historic Black River channel; at the northern portion of the site, and on other portions of the site (e.g., neai.the south portion of the site). Mitigation for loss of trees shall be identified in the Landscape Plan which shall particularly focus on additional buffering and screening vegetation for any such loss. Any substantial loss of existing screening must be replaced before development can continue. (See Ordinance No.4219.) (See Measure 18.) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Land Clearing and Tree Cutting Ordinance'(4-9); Site Plan Review Ordinance (4-31-33), City of Renton Comprehensive Plan'l.A., I.C., I.D., I.E;Valley Plan I.C.8., I.B. 37. 'The applicant shall plant additional native shrubs and trees in a linear buffer along Springbrook Creek in the area designated as the heron flight zone in order to provide further screening for this sensitive wildlife area. This is fully described in Measure 19. I P Nexus: City of Renton Environmental Review Ordinance (4-6-22); Land Clearing and Tree Cutting Ordinance (4-9); Site Plan Review Ordinance (4-31-33), City of li Renton Comprehensive Plan I.A., I.C., I.D., I.E;Valley Plan I.C.8. 14 i I 05/28/91(MRDOCB) 38. In order to ensure that adequate information is available on the impact of the building on the heron, the applicant shall provide a monitoring plan for the construction and post-construction period. The plan shall be submitted to the Development Services Division of the Planning/Building/Public Works Department prior to the site plan public hearing. This monitoring plan shall include the following: a. An element to monitor the effects of construction activities on nesting Great Blue Herons. This element of the plan shall be developed in consultation with the Washington Department of Wildlife; b. An element providing a process for the establishment of a monitoring committee, comprised of individuals knowledgeable in the area of wildlife preservation issues. It shall be formed prior to the issuance of grading and building permits to develop and implement the monitoring plan. The committee shall consist of a representative from the applicant, the City of Renton,and the public. The Washington Department of Wildlife shall have an advisory role to ensure that the monitoring effort is consistent with any other heron monitoring programs in the region; c. An element providing for committee review of monitoring to be done by a professional biologist. Monitoring results for the period from January 1 to June 1 of each construction season will be presented to the Environmental Review Committee in an interim report. The results will be used to determine if there is a need for additional mitigation measures such as additional screening of construction or alterations in construction timing, methods, phasing, screening, or location of development; as well as whether construction time limits, phasing, screening or other mitigation may be modified or eliminated based upon evidence that the heron colony is inactive for that particular season. Such determination could be made by June 1 of each year. The berm, however, shall not be subject to elimination under this condition. d. An element providing for committee report on the monitoring results. The results of the monitoring period (January 1 to December 31), and the Committee's report shall be in an annual report to be presented to the City of Renton's Environmental Review Committee for their consideration. The annual report will describe the condition of the heron colony, present the results of monitoring and impacts of construction (vis-a-vis other factors. such as weather conditions, availability of food resources and other regional factors,and comparison to similar urban colonies); e. An element establishing ERC's ability to act on the annual report. The annual report shall be used by the Environmental Review Committee (ERC) to determine the need, if any, for additional mitigation measures such as enhanced buffering and/or screening of construction activities, noise mitigation, and alterations in construction timing, methods, or location of development activity; as well as whether construction time limits, phasing, screening or other mitigation may be modified or eliminated based upon evidence that the heron colony is inactive. 15 05/28/91(MITDOCB) NOTE: Results of first year monitoring may also be used by the ERC to determine allowable construction activity (i.e., the number of buildings/parking structures to be built at any one time) for the ensuing construction period after the first year. f. Monitoring and annual reports shall continue for at least one year after completion of all project construction as determined by the City's Environmental Review Committee. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E.;WAC 197-11-768 39. In order to minimize impacts on the wildlife, the applicant shall limit the height of buildings to 57 feet (four stories) between 600 and 800 feet and to 71 feet (five stories) beyond 800 feet from the heron colony on Tract B. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 40. In order to minimize the impacts on the herons and other wildlife, the applicant shall do interior work (rough-in mechanical and electrical, interior shell finish, glazing,and tenant improvements)at any time once the berms, building shells and window hoods have been installed. The applicant shall complete landscaping (as specified below) immediately after, or in conjunction with, or after, the construction of the buildings. I III Nexus: City of Renton Environmental Review Ordinance (4-6-22);'City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 41. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan;public hearing. Nexus: city of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C.; I.D., I.E., III.C., III.D.;Valley Plan I.C.8. ' I 42. In order to lessen impacts on wildlife, and particularly birds, the applicant shall construct the buildings with non-glare finishes and natural colors. All exterior glazing shall be of material and design that will protect against bird collisions and reduce reflectivity. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33) Valley Plan I.C.8.; City of Renton Comprehensive Plan I.A., I.D. UNAVOIDABLE ADVERSE IMPACTS: Unavoidable adverse impacts will include changes in heron flight patterns to and from the heron colony, occasional disturbance to herons (feeding and movements) during construction and during day-to-day use of the buildings and parking areas. 16 ' 1. • 05/28/91(MITDOCB) K. NOISE The EIS notes that a number of noise sources exist in the vicinity of Tracts A and B, including vehicular noise along nearby roadways and 1-405, intermittent noise associated with warehouse and industrial uses south of the site such as the Metro Wastewater Treatment Plant; low flying aircraft; occasional rail activities north of the site;and office and other construction east of the rookery. • General use of the site would also create noise from mechanical units of the buildings, cars coming and leaving the site,and general intensified human use and activity. In addition, cumulative noise impacts may also be of concern, although data is not available at this time. As EISs for future projects are completed, additional noise data will be available. Mitigation proposed for this project concentrates on impacts from this project alone. In addition, scientific research has not adequately covered the response of herons and other wildlife to noise impacts through their life cycles. Therefore, it is prudent for the city to condition the development in an effort to reduce noise as much as possible. RECOMMENDATIONS: 43. The applicant shall ensure that the garage design incorporates reasonable noise attenuation measures including, but not limited to sound absorbing baffles, interior partitions that divert noise away from the heronry, and signage asking motorists not to sound their vehicle's horn in the garage. To the extent possible, the applicant shall design the garage to promote natural ventilation instead of mechanical, in order to reduce noise impacts. Although air quality must be addressed, the applicant shall provide air quality solutions that do not cause undue noise impacts. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A., I.D., I.E 44. In order to reduce noise impacts, the applicant shall restrict outdoor construction activities to week days and to the hours of dawn to dusk during the summer and fall months and 7:00 a.m.to 6:00 p.m. during the winter and spring months. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 45. In order to reduce noise impacts, the applicant shall ensure that all construction equipment has sound control devices no less effective than those provided on the original equipment (e.g., equipment mufflers and noise shrouds are intact and operational). Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 46. The applicant shall, in order to control noise, provide a noise education program for operators of excavation equipment and haul trucks. The program shall discourage wide open throttles, compression release brakes, and provide incentives for operators using noise suppression methods such as shutting off equipment when not in use. 17 05/28/91(MRDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.;City of Renton Comprehensive Plan I.B. 47. The applicant shall, in order td reduce noise impacts, erect a temporary noise barrier around loud equipment. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.,; City of Renton Comprehensive Plan I.B. 48. In order to reduce construction noise, the applicant shall require contractors to use electrically driven equipment rather than pneumatically driven machines, whenever possible. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Green River Valley Policy Plan I.B.; City of Renton Comprehensive Plan I.B. 49. In order to reduce noise impacts, the applicant shall certify, in writing to the Development Services Division of the Planning/Building/Public Works Department prior to commencing site preparation or construction activity, that all construction equipment complies with pertinent equipment noise standards of the U.S. Environmental Protection Agency. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton !i Comprehensive Plan I.B. NOTE TO APPLICANT: The applicant must comply with the City of Renton's noise ordinance,Zoning Code Title 8, Chapter 7, Health and Sanitation. 50. In order to reduce noise impacts on wildlife, the applicant shall use auger cast-in- place piling construction in lieu of conventional pile driving. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. 51. In order to minimize the impact of construction noise on nesting herons, the applicant shall exclude major outdoor construction activities within 800 feet of the heron colony during the period from February 1 to July 1 (Section 3.5.4 of FEIS). Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B., I.D.; Green River Valley policy Plan I.C.8. 52. In order to minimize the impact of noise on herons and other wildlife,the applicant shall soundproof and locate all noise-generating units such as air conditioning units in areas which will minimize the effect on wildlife. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton ' Comprehensive Plan I.B., I.D. UNAVOIDABLE ADVERSE IMPACTS: With all mitigation in place, noise would result from construction activities and, to a lesser degree,from occupation and use of the site following construction. 18 • 05/28/91(MITDOCB) L HAZARDOUS WASTE No contaminated dredge spoils are known to have been placed on Tract B and,therefore, no mitigation is necessary. M. RELATIONSHIP TO PLANS,ZONING AND SHORELINES For the most.part, Tract B is consistent with the Comprehensive Plan. However,the Phase III proposed seven-story building would not be in keeping with the land use police 1.13 of the Green River Valley Policy Plan that offices and other structures be low rise buildings. In the surrounding area, other office buildings range in height from one to four stories. Hence, a seven-story building would not qualify as low rise nor would it be in harmony with surrounding buildings. However, the Metro Treatment Plant, directly south of Tract B, is undergoing environmental review for an expansion of its present treatment capacity of 72 million gallons per day to 108 mgd for projected year 2005 flows. Possible expansion beyond year 2005 flow levels are also anticipated. The new Metro facilities would be visible from the upper stories of the buildings on Tract B. During the construction period for wastewater improvements, high odor generation is possible. Although the Metro project will provide screening and odor control, it is unlikely that all impacts can be mitigated. These impacts are, clearly, not from the Black River Corporate Park, Phase VII and VIII proposal. Therefore, this project cannot mitigate. The Metro project will be required to mitigate its own impacts. However, the City of Renton believes that proper siting, design and buffering on the Metro site and the Black River site will reduce impacts for both projects. 53. The applicant shall reduce the size of the seven-story building on Tract B to a height not to exceed five stories. This"mid-rise"height will still be greater than the de facto "low rise" building height policy in the Green River Valley Plan, but will be more in keeping with surrounding building heights. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); Green River Valley Plan 54. In order to reduce visual impacts from the adjacent Wastewater Treatment Plant, the applicant shall ensure that the multi-stories buildings on Tract B are oriented away to the greatest extent possible. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance(4-31-33); Green River Plan I.C.8. POTENTIAL UNAVOIDABLE ADVERSE IMPACTS: The Metro Wastewater Treatment Plant DEIS states that even with Metro's proposed odor control plan, offensive odors may be generated from the treatment facility and extend beyond the boundaries of the site. These odors could occur as part of the sewage treatment plant's day-to-day operations and, but most likely, would occur from mechanical failures, emergencies, or system upsets. These odors have the greatest potential for crossing Tracts A and B when the prevailing winds are from the south and southwest. 19 05/28/91(MITDOCB) N. LIGHT AND GLARE Proposed actions from both Tracts A and B would require outdoor lighting for parking, sidewalks,and access roads, and indoor lighting for office space, hallways and foyer. The EIS notes that lighting for parking areaslwill be low level light, not visible from off site. The source of light from automobiles, potentially of greater significance, can be screened from the rookery through the use of dense foliage. Building lighting, of a diffused source, should also not adversely impact heron nesting some 600 feet or more away. Of greater concern is'visible human activity within these buildings. RECOMMENDATIONS: 55. To;reduce the intrusion of lighting to areas where it is not desirable, the applicant shall use down light standards. Multiple standards at lower height are preferred to taller standards with greater dispersion characteristics. Areas within 200 feet of the P-1 Pond or 600 feet of the Great Blue Heron rookery shall not have artificial illumination. Nexus: City of Renton. Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.; Valley Plan I.C.8. 56. The applicant shall submit landscape plans prior to site plan review to the satisfaction of the Development Services Division of the Planning/Building/Public Works Department providing sufficient dense evergreen vegetation along earthen berms, as well as a part of the landscape plan for the parking area so as to reduce headlight glare from automobiles. The applicant shall have landscape plans approved by the Development Services Division of the Planning/Building/Public Works Department for the following: a) dense evergreen vegetation along earthen berms, and b) the landscape plan for the parking area with the goal of reducing headlight glare from automobiles, prior to the site plan public hearing, consistent with Measures 10, 11, 12, 13, 14, 15 and 16. Nexus: Landscaping Ordinance(4-31-34); City of Renton Environmental Review Ordinance (4-6-22); Site Plan Review Ordinance (4-31-33); City of Renton Comprehensive Plan I.A., I.D.;Valley Plan I.C.8. 57. In order to reduce disruption caused by visible human activity, the applicant shall screen all windows facing, and'within 800 feet of the heronry and located above the 30 foot tall tree/berm or the parking garage, with hoods or screens which substantially block heron views of human activity, particularly at dusk or night from the rookery. Hoods or screens may be removed once trees of sufficient height and density have grown above the height of the hooded windows. NOTE: The applicant is advised to consult with the Fire Department on the design and flame dispersion characteristics of hoods or screens before they are installed. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.A.,I.D.;Valley Plan I.C.8. ' I 20 05/28/91(MITDOCB) 58. The applicant shall submit plans to landscape surface parking with closely spaced trees sufficient to minimize the visual impact of parking and moving cars on Great Blue Herons prior to site plan public hearing, consistent with Measure 40. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Landscape Ordinance (4-31-34); Land Clearing Ordinance (4-9); City of Renton Comprehensive Plan I.A., I.C., I.D., I.E., III.C., III.D.;Valley Plan I.C.8. UNAVOIDABLE ADVERSE IMPACTS: The buildings and parking proposed for Tract A and B would result in the increased nighttime light from buildings and parking, as well as headlight glare from automobiles, not all of which can be fully mitigated. 0. HISTORIC AND CULTURAL Because of the comprehensive archaeological investigations that were previously completed on the site, analysis of cultural and archaeological resources was not identified as a scoping issue by the City of Renton and not included as a part of this EIS. Please refer to the Draft and Final EISs for Eariington Park (City of Renton 1980; 1981) and the final report prepared by James Chatters for further information on this topic. P. TRAFFIC The EIS notes that the Traffic Impact Analysis for Valley 405 Business Park utilizing the Grady Way Corridor Transportation Improvement Study, shows that the trip generation of 5,180 vehicular trips per day from both Tracts A and B would be 30-35 percent less than those assigned in the Grady Way corridor study model for which the developer provided mitigation. The project will, however, increase air quality impacts through the introduction of numerous car trips to the area. These are discussed in the Air Quality section, for both Tracts A and B. Other projects proposed for the area will also impact the surrounding streets. The proposed Metro Wastewater Treatment Plant Expansion (see DEIS for this project) and the proposed Rabanco Waste Reduction Facility (DEIS forthcoming) may combine with this project's traffic and existing traffic to reduce Levels of Service at several intersections and increase peak hour counts. Construction traffic from these three projects may also occur during the same timeframe, i.e., 1991-1996. Cumulatively, the impacts of this increased traffic could be significant, however, all impacts have not yet been compiled for the other projects. It is possible that mitigation measures will have to be coordinated between these projects, if all are constructed. RECOMMENDATIONS: 59. In order to address potential cumulative impacts, the applicant shall prepare a Construction Transportation Plan which addresses possible construction traffic conflicts with the Metro Wastewater Treatment Plant and the. Rabanco Waste Recycling Plant during their construction and possible solutions prior to site plan review (or prior to the issuance of site preparation and/or building permits). The plan should consider the common use of a construction staging areas and construction phasing to reduce impacts. The plan shall be approved by the City of Renton Development Services Division. 21 05/28/91(MITDOCB) i u Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 60. In order to address traffic impacts, the applicant shall review, revise and implement the existing TMP i for Black River Corporate Park to increase its effectiveness. ▪ These revisions shall include evaluation of goals identified in the TMP (a reduction of 10 perce t of SOV trips) within two years following building it occupancies. The plan must be approved by the City, with Metro Transportation Section review before occupancy of any building. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to address traffic impacts, the applicant shall submit a report to the City showing the rasults of the TMP evaluation formulated in the above mitigation measure. i If targeted goals are not met within two years, additional incentives I for HOV participation shall be installed (i.e., establishment of a vanpool operation). The incentives shall include parking fees, the purchase of vans for vanpools, and a guaranteed ride home program. The subsidy shall continue until the 10 percent goal is reached. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to reduce the traffic impacts, the applicant shall agree to provide an agreement acceptable to the City Attorney to provide a free one month bus pass to all new employees (on a five employee per 1,000 sf basis) at the time of each new tenant occupancy in any of the buildings as a part of their TMP. The passes should be for peak hour, two zones, maximum requirement. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to address traffic impacts, the applicant shall, as a part of their TMP, agree to distribute site-appropriate, transit and ridesharing information to new tenants and annually to all tenants. . II Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to display site-appropriate transit and ridesharing information in prominent public locations. , Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City.of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce traffic impacts, the applicant shall, as a part of their TMP, agree to appoint a Transportation Coordinator to promote and �I coordinate the use of public transportation and high occupancy vehicles. 22 05/28/91(MITDOCB) Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. In order to reduce the traffic impacts of the project, the applicant shall, if the 10 percent rideshare is not met, design and implement a guaranteed ride home program for registered vanpool users. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic Impacts, the applicant shall design and implement a parking management program which provides preferential parking for high occupancy vehicles. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the traffic impacts, the applicant shall ask tenants to promote an alternative work hour program in order to reduce peak hour trips. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to address the impacts of traffic, the applicant shall establish a performance goal for high occupancy vehicle use. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the impacts of traffic, the applicant shall conduct transportation surveys/monitoring to determine participation and interest in HOV and bus transportation. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. ▪ In order to reduce the impacts of traffic, the City and the applicant shall review the Grady Way Transportation Study to determine the option for crediting the applicant for previous improvement contributions. Based on earlier contributions and trips expected from this development, the applicant shall pay$592,790 for 3,487 trips not previously mitigated under earlier contributions. Nexus: City of Renton Environmental Review Ordinance (4-6-22); Grady Way TBZ;City of Renton Comprehensive Plan VII;Valley Plan I.C.5. 61. In order to reduce traffic impacts, the applicant shall ensure that truck and wheel washing must be accomplished on-site after each haul trip. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.B. 23 j 05/28/91(MITDOCB) NOTE: As required by City of Renton ordinance, the applicant shall abide by hauling hours for large construction vehicles to 7:30 a.m. between 8:30 a.m. and 3:30 p.m. and after 6:30 p.m. NOTE: In order to reduce the impacts of traffic, the applicant shall ensure that large construction vehicles shall follow prescribed haul routes. These routes shall be conceptually formulated and submitted at site plan review. The final routes shall be approved by the City of Renton prior to the issuance of construction permits. Nexus: City of Renton Envi ionmental Review Ordinance (4-6-22); Grady Way TBZ; City of Renton Comprehensive Plan VII;Valley Plan I.C.5. UNAVOIDABLE ADVERSE IMPACTS: The unavoidable adverse traffic impacts associated with these developments will be defined in these other upcoming projects'draft EISs. I Q. PARKS AND RECREATION The site presently provides passive recreational opportunities for workers in nearby office buildings, and the general public. Bird-watching, jogging, and walking are the primary uses. If the site is developed, public access to the area would be limited, and the loss of wildlife habitat would reduce some of the passive recreational values of both Tract A and B. I I RECOMMENDATIONS: • • 62. To mitigate the need for additional recreation and displaced opportunities on site, the applicant shall construct a pedestrian trail from Oakesdale Avenue along the earthen berms adjacent to the P-1 Pond according to EIS specifications. The applicant shall provide landscaping and screened viewing areas for the passive user as specified. The applicant shall continue the trail east to Naches Avenue and reconnect with the sidewalk system at this point (see Fig. 3-1, 3-2 and 3-3 FEIS). The maintenance of these areas shall be the responsibility of the property • owner into perpetuity. • Nexus: City of Renton Environmental Review Ordinance (4-6-22); Comprehensive Parks Plan; City of Renton Comprehensive Plan VII.H, I.A. • 63. To address the loss of recreational use and the site's proximity to wildlife, the applicant shall provide an easement or dedication with terms satisfactory to the City, ensuring year-round public access to and along the pedestrian trail. The trail shall be screened from the P-1 Pond by vegetation. A fence shall be provided between the P-1 Pond and the trail to limit human intrusion into the wildlife area. This easement shall be provided prior to the issuance of any site preparation and/or building permits for development on either Tract A or Tract B. i u Nexus: City of Renton Environmental Review Ordinance (4-6-22); Comprehensive Parks Plan; City of Renton Comprehensive Plan VII.H R. CUMULATIVE IMPACT The continued conversion of land in the area to office park and industrial uses will result in the following cumulative impacts: • 24 05/28/91(MITDOCB) Soils will be disturbed and moved onto and off development sites; erosion will occur and silt and sedimentation can be expected to increase in the P-1 Pond. Wetlands may continue to be lost; air quality is expected to decline with these projects increasing incrementally the carbon monoxide and ozone levels; wildlife habitat and associated species will continue to decline; and noise levels are likely to increase as will traffic. RECOMMENDATIONS: 64. As additional development occurs in the area, mitigation measures should be established and coordinated by the City of Renton for each project to minimize the cumulative adverse effects of the proposals. Nexus: City of Renton Environmental Review Ordinance (4-6-22); City of Renton Comprehensive Plan I.D.,I.E. 65. In order to address potential cumulative impacts, the applicant shall coordinate schedules for new construction in the area to eliminate excessive traffic usage of Oakesdale Avenue. Nexus: City of Renton Environmental Ordinance (4-6-22), City of Renton Comprehensive Plan VII I.A.;Valley Policy Plan I.C.5. UNAVOIDABLE ADVERSE IMPACTS: As the area urbanizes with this and other projects, incremental impacts will be felt on air quality, water quality, wildlife habitat and wetlands. Odor and aesthetic impacts may be expected from the Metro Wastewater Treatment Plant Expansion across Oakesdale, and noise, air quality and traffic are expected to increase with the proposed Rabanco facility. 25 CITY OF RENTON Community Development Department Earl Clymer, Mayor Kenneth E.Nyberg,Director April 11, 1990 TO: Recipients of the Draft Environmental Impact Statement for the Blackriver Corporate Park Office Buildings ECF;SA;SM-071-88 and ECF;SA;SM-109-89 The accompanying Draft Environmental Impact Statement (DEIS) identifies the environmental consequences associated with construction and occupancy of six office buildings and a parking structure proposed in the Blackriver Corporate Park, located on Oakesdale Avenue in Renton. The site is currently zoned Office Park and is divided into two tracts: Tract A and B. TRACT A The proposal includes phased construction of three office buildings ranging in height from one to four stories. These buildings would provide 183 , 600 square feet of space. Surface parking would accommodate approximately 800 autos. The document also analyzes a no action alternative for Tract A. TRACT B The proposal includes phased construction of three office buildings ranging in height from three to seven stories. These buildings would provide 286, 200 square feet of space. Surface parking would accommodate approximately 500 autos and another 800 stalls would be provided in a three story parking structure. The document also analyzes two additional alternatives for tract B: a single seven story building and no action. IMPACTS • The following impacts are addressed in the DEIS: earth, air quality, surface water and water quality, vegetation, wildlife resources, unique terrestrial resources (great blue heron) , noise, land and shoreline use, light and glare, and parks and recreation. The DEIS identifies a variety of mitigation measures. • 200 Mill Avenue South - Renton, Washington 98055 II II P , Information in the document will be used by the City of Renton to make informed decisions regarding this proposal consistent with the intent of the State Environmental Policy Act (SEPA) . Written public comment on the DEIS is encouraged and will be accepted for 30 days from this date. Following the 30 day review period, responses to comments will be prepared and incorporated in a Final Environmental Impact Statement (FEIS) . W...,'-t- en comments on the DEIS will be accepted through MtiNir, jl :lgge nd should be addressed to: .I . Mary Lynne Myer Senior Environmental Planner Department of Community Development 200 Mill Avenue South Renton, WA 98055 II A public hearing to accept written and oral comments on the DEIS will be held in the Renton City Council Chambers on Tuesday, May 1, 1990, at 7 : 30 P.M. , 200 Mill Avenue South, Renton, WA. Please call Mary Lynne Myer at 235-2550, for additional information. Dmit, 'r \ Donald K. Erickson, AICP Chief, Current Planning II I , DRAFT ENVIRONMENTAL IMPACT STATEMENT • FOR BLACKRIVER CORPORATE PARK, TRACTS A AND B OFFICE BUILDINGS CITY OF RENTON, WASHINGTON For the Review and Comment of Citizens, Citizens Groups, and Government Agencies In Compliance With The State Environmental Policy Act of 1971 Chapter 42.21c, Revised Code of Washington and Revised SEPA Guidelines, Effective April 4, 1989 Chapter 197-11, Washington Administrative Code Date' of Issue: April 11, 1990 FACT SHEET Title Blackriver Corporate Park, Tracts A and B Office Buildings Description of Construct as a four-year phased project, 3 one- to four-story proposal and office buildings (183,600 square feet) on 12.71 acres of Tract A alternatives and 3 four- to seven-story buildings on the 15.7-acre Tract B, Renton, WA. Tract B will also include the construction of a three-story parking structure in 1992-93. Tract A. Alternatives analyses include: • Alternative A-1 -Tract A Proposed Action. Construction of a single-story 23,600 square foot building in 1990; and two four-story 80,000 square foot buildings in 1993 and 1994; and • Alternative A2 - No Action Tract B • Alternative 131. - Tract B Proposed Action. Construction of a 71,000 square foot four-story office building in 1990; construction of a 58,600 square foot three-story office building in 1991; and construction of a 156,600 square foot office building and three-story parking structure in 1992 to 1993; • Alternative B2 - Construction of one seven-story office building (285,000 square feet) and a four-story parking structure; and • Alternative B3 - No Action. Location of site Renton, King County Proposal's sponsor First City Developments Corporation Date of Schedule is tentative pending decision on EIS analysis implementation Lead agency City of Renton Responsible official City of Renton Environmental Review Committee i Contact person Donald K. Erickson, AICP Chief, Current Planning Department of Community Development (206) 235-2550 List of possible permit, Building Permit approval, and license Shoreline Substantial Development Permit requirements Clearing, Grading, and Filling Permit Clean Water Act - Section 404 Authors and principal Jones & Stokes Associates, Inc.: contributors to DEIS Project Management Jonathan Ives Soils, Water Quality Robert Denman Vegetation, Wetlands Dyanne Sheldon Terrestrial Resources Jonathan Ives Land Use Amy O'Leary Noise Robert Sculley Air Quality Tim Rimpo Editing Jennifer Grathwol DB Associates, Inc.: Project Alternatives Don Bazemore Scott Davidson • INCA Engineers, Inc.: Foundation/Seismic Dan Russell, P.E. Date of issue of Draft April 11, 1990 Environmental Impact Statement (DEIS) Date of hearing on DEIS May 1, 1990 Date comments on the May 11, 1990 DEIS are due Tentative date of issue June 8,1990 of Final EIS Subsequent environmental None anticipated review Location of background Jones & Stokes Associates, Inc. information 1808 - 136th Place N.E. Bellevue, WA 98005 (206) 641-3982 • Cost of copy $8.00 to public ll DISTRIBUTION LIST Federal U. S. Environmental Protection Agency Region X U. S. Army Corps of Engineers U. S. Fish and Wildlife Service U. S. Soil Conservation Service State Department of Ecology (SEPA Register) Department of Natural Resources Department of Wildlife Department of Transportation Department of Social and Health Services Office of Archaeology and Historic Preservation Office of Public Archaeology, University of Washington Puget Sound Water Quality Authority Regional Metro - Water Quality Division Metro - Transit Puget Sound Air Pollution Control Agency Puget Sound Council of Governments Seattle - King County Department of Public Health Seattle - King County Commuter Pool Local Government King County Department of Public Works, Surface Water Management Division King County Building and Land Development Division SEPA Information Center King County Parks, Planning, and Resources Department; Attn: Erik Stockdale King County Soil and Water Conservation District iil 7' City of Renton Mayor; Attn: Mayor's Assistant City Council it Hearing Examiner's Office Planning Commission Parks Board Public Works Department Parks and Recreation,Department Police Department Fire Department City Attorney SEPA Information Center Planning and Community Development Department Utilities/Services Renton School District No. 403 Puget Sound Power and Light Company Washington Natural Gas Company Pacific Northwest Bell Libraries Renton Public Library - Main Branch (3) Renton Public Library - Highlands Branch (2) University of Washington Library, College of Arch. and Urban Planning King County Public Library System Newspapers Seattle Times - Eastside Edition Seattle Post-Intellegencer Daily Journal of Commerce Valley Daily News Journal American iv Private Organizations and Others Greater Renton Chamber of Commerce City of Kent Indian Tribal Council City of Tukwila Seattle Audubon Society Nature Conservancy Friends of the Earth I I ELEMENTS OF THE ENVIRONMENT DISCUSSED IN THIS EIS (1) NATURAL ENVIRONMENT (a) Earth (i) Geology Reviewed (ii) Soils Reviewed (iii) Topography N/A (iv) Unique physical features N/A (v) Erosion/enlargement of land area (accretion) N/A , (b) Air (i) Air quality N/A (ii) Odor (iii) Climate . (c) Water (i) Surface water movement/quantity/quality Reviewed (ii) Runoff/absorption Reviewed (iii) Floods N/A (iv) Groundwater movement/quantity/quality Reviewed (v) Public water supplies N/A (d) Plants and animals Reviewed (i) Habitat for and numbers or diversity of species of plants, fish or other wildlife (ii) Unique species Reviewed (iii) Fish or wildlife mitigation routes Reviewed (e) Energy and natural resources N/A (i) Amount required/rate of use/efficiency (ii) Source/availability (iii) Nonrenewable resources (iv) Conservation and renewable resources (v) Scenic Resources i (2) BUILT ENVIRONMENT (a) Environmental health (i) Noise Reviewed (ii) Risk of explosion N/A (iii) Potential releases to the environment N/A affecting p ublic health, such as toxic or hazardous materials vi d i (b) Land and shoreline use {' (i) Relationship to existing land use plans Reviewed and to estimated population (ii) Housing N/A (iii) Light and glare Reviewed (iv) Aesthetics N/A (v) Recreation N/A (vi) Historical and cultural preservation Reviewed (vii) Agricultural crops N/A (c) Transportation N/A (i) Transportation systems (ii) Vehicular traffic (iii) Waterborne, rail, and air traffic (iv) Parking I , (v) Movement/circulation of people and goods (vi) Traffic hazards (d) Public services and utilities , (i) Fire N/A (ii) Police (iii) Schools (iv) Parks and other recreational facilities _ (v) Maintenance (vi) Communications (vii) Water/storm water (viii) Sewer/solid waste (ix) Other governmental services or utilities , J vii 1 II { , TABLE OF CONTENTS Page CHAPTER 1. SUMMARY 1-1 1.1 Introduction and Background 1-1 1.2 Proposed Action and Alternatives 1-1 1.2.1 Tract A 1-1 Alternative Al - Proposed Action 1-1 Alternative A2 - No Action 1-3 1.2.2 Tract B (Phase VII) 1-3 Alternative B1 - Proposed Action 1-3 Alternative B2 - Single Seven-Story Building with Parking Structure 1-3 Alternative B3 - No Action 1-3. 1.3 Applicant's Objectives 1-3 1.4 Impacts and Mitigation Measures 1-4 1.4.1 Tract A 1-4 1 Impacts 1-4 Mitigation Measures 1-4 1.4.2 Tract B 1-15 Impacts 1-15 Mitigation Measures 1-15 1.5 Adverse Impacts that Cannot be Mitigated 1-16 1.5.1 Tracts A and B 1-16 CHAPTER 2. DESCRIPTION OF THE PROPOSED ACTION AND ALTERNATIVES 2-1 2.1 Introduction 2-1 I' 2.2 Project Area 2-2 2.3 Project History 2-2 2.4 Project Need 2-4 2.5 Description of the Proposed Action and Alternatives 2-4 2.5.1 Tract A 2-4 Alternative Al - Proposed Action 2-4 Alternative A2 - No Action 2-5 2.5.1 Tract B (Phase VII) 2-5 Alternative B1 - Proposed Action 2-5 . Alternative B2 - Seven-Story Building with Parking Structure 2-5 Alternative B3 - No Action 2-6 CHAPTER 3. AFFECTED ENVIRONMENT,.SIGNIFICANT IMPACTS AND MITIGATION MEASURES 3-1 3.1 Introduction 3-1 3.2 Earth Resources 3-1 3.2.1 Topography/Soils 3-1 Affected Environment 3-1 viii , , Page Impacts 3-2 Mitigation Measures 3-3 3.2.2 Foundation 3-3 Affected Environment 3-3 I Impacts 3-3 Mitigation Measures 3-4 3.2.3 Seismic 3-4 Affected Environment 3-4 ' Impacts 3-5 1 Mitigation Measures 3-5 3.3 Air 3-5 3.3.1 Air Quality 3-5 Affected Environment 3-5 Impacts • . 3-11 Mitigation Measures 3-17 3.4 Water 3-17 3.4.1 Surface Water Movement/Quantity 3-17 I Affected Environment 3-17 Impacts 3-19 Mitigation Measures 3-21 3.4.2 Water Quality/Runoff 3-21 t ' Affected Environment 321 • ' Impacts 3-23 Mitigation Measures 3-27 3.5 Terrestrial Vegetation 3-28 1 3.5.1 Vegetation 3-28 • Affected Environment 3-28 Impacts 3-29 Mitigation Measures 3-30 3.5.2 Wetlands 3-31 Affected Environment 3-31 Impacts 3-32 Mitigation Measures 3-32 3.5.3 Wildlife Resources 3-33 Affected Environment 3-33 Impacts 3-34 Mitigation Measures 3-36 ' 3.5.4 Unique Terrestrial Resources 3-37 Affected Environment 3 3g 1 if Impacts Mitigation Measures 3-43 3.6 Environmental Health 3-43 3.6.1 Noise 3-43 Affected Environment 3-43 Impacts 3-46 Mitigation Measures 3-47 ix l Page = 3.7 Land and Shoreline Use 3-48 3.7.1 Relationship to Existing Land Uses 3-48 Affected Environment 3-48 -- Impacts 3-48 Mitigation Measures 3-49 3.7.2 Relationship to Plans, Zoning and Shorelines 3-49 Affected Environment 3-49 Impacts 3-63 Mitigation Measures 3-65 3.7.3 Light and Glare 3-65 Affected Environment 3-65 Impacts 3-66 Mitigation Measures 3-66 ! 3.7.4 Historic and Cultural Resources 3-67 i' -' Affected Environment 3-67 ii Impacts 3-67 1111 3.8 Transportation 3-67 3.8.1 Traffic 3-67 Affected Environment 3-67 ', Impacts 3-67 3.9 Public Services and Utilities 3-68 3.9.1 Parks and Other Recreational Facilities 3-68 ‹' Affected Environment 3-68 Impacts 3-68 Mitigation Measures 3-68 CHAPTER 4. REFERENCES 4-1 4.1 Literature Cited 4-1 I 4.2 Personal Communications 4-2 APPENDICES = A Zoning Code Excerpts and Overview of Comprehensive .1 Plan, Green River Plan, Zoning Ordinances and Development "- Standards, Land Clearing and Tree Cutting Ordinance B Life History and Effects of Human Disturbance on Great Blue Heron Rookeries C Construction Noise Data D Foundation and Seismic Analysis E Air Quality Modeling x LIST OF TABLES --r Table Page 1-1 Summary of Features of Tract A and B Proposed Actions 1-2 1-2 Summary of Impacts and Mitigation Measures for Tract A Alternative Blackriver Corporate Park 1-5 1-3 Summary of Impacts and Mitigation Measures for Tract B Alternatives Blackriver Corporate Park 1-10 3-11 1987 Emissions in King County 3-7 3-2 Carbon Monoxide Impacts from Renton Garage Alternative B 1 with One Exit Lane and 40 Percent Open Area 3-13 3-3 Carbon Monoxide Impacts from Renton Parking Garage Alternative B1 with Two Exit Lanes and 40 Percent Net Open Area 3-14 3-4 Carbon Monoxide Impacts from Renton Garage Alternative B2 with One Exit Lane and 40 Percent Open Area 3-15 3-5 Carbon Monoxide Impacts from Renton Parking Garage Alternative B2 with Two Exit Lanes and 40 Percent Open Area 3-16 3-6 Carbon Monoxide Impacts from Renton Parking Garage Alternative B 1 with Two Exit Lanes and 55 Percent Net Open Area 3-18 _ 3-7 Approximate Runoff Volumes from Tracts A and B for a 10-Year Storm, Blackriver Corporate Park, Renton, WA 3-20 3-8 Historic Water Quality Data (Mean Concentrations of Eight Sampling Dates) for the Black River and Tributaries, Renton, WA 3-22 3-9 I Water Quality of Springbrook Creek and Black River During October 1980, City of Renton, WA 3-24 3-10 Metro 1987 Water Quality Data For Springbrook Creek 3-25 3-11 Results of 1989 Water Quality Sampling of Naches Avenue Drainage Swale, Blackriver Corporate Park, Renton, WA 3-26 3-12 Noise Data Summery for Black River and Peasley Canyon Rookeries 3-44 3-13 Weighted Sound Levels and Human Response 3-45 • xi Page 3-14 Consistency of Proposed Actions for Tracts A and B with City of Renton Comprehensive Plan Policies 3-50 • xii LIST OF FIGURES Following Figure Page 1-1 Regional Map 1-1 1-21 Project Location, Proposed Development of Tracts (Phase VII) and B, Blackriver Corporate Park, Renton, WA 1-1 1-3 Location of Tracts A and B, Blackriver Corporate Park, Renton, WA 1-1 2-1 Significant Environmental Features/Recommended Setbacks; Tracts A and B, Blackriver Corporate Park 2-3 2-2 Alternative Al - Proposed Action 2-4 2-3 Alternative Al - Landscape Plan 2-4 2-4 Alternative B1 - Proposed Action 2-5 2-5 Alternative B1 - Landscape Plan 2-5 2-6 Alternative B2 - Seven Story Building with Parking Structure 2-6 2-7 Alternative B2 - Landscape Plan 2-6 3-1 Probability of Exceedance of Peak Ground Acceleration 3-5 r-- 3-2 1 Carbon Monoxide Impacts - Garage Only 3-14 3-3 Carbon Monoxide Impacts - Garage Only 3-14 3-4 Carbon Monoxide Impacts - Garage Only 3-18 3-5 1 Carbon Monoxide Impacts - Garage Only 3-18 3-6 Carbon Monoxide Impacts - Garage Only 3-18 3-7 Hourly Average dBA Value 3-45 3-8 15-Minute dBA Levels 3-45 3-9 Construction Equipment Noise Ranges 3-46 xiii • • CHAPTER 1 • • CHAPTER 1 SUMMARY 1.1 Introduction and Background The First City Development Corporation (FCDC) is proposing to develop portions of the Blackriver Corporate Park in the City of Renton. The project site is located northwest of Renton city center and east of the Municipality of Metropolitan Seattle's (METRO) Renton Wastewater Treatment Facility (Figures 1-1 and 1-2). This Environmental Impact Statement (EIS) has been prepared to satisfy the State Environmental Policy Act(SEPA)requirements and to address environmental issues defined during the scoping process and by the City of Renton Environmental Review Committee. This chapter provides a brief summary of the proposed action,the project alternatives and the environmental impacts and mitigation measures. Chapter 2 contains a detailed description of the proposed action and alternatives, while Chapter 3 provides an analysis of project impacts and mitigation measures. 1.2 Proposed Action and Alternatives The proposed action of FCDC is to develop office buildings on that portion of the Blackriver Corporate Park known as Tracts A (12.7 acres) and B (15.7 acres) (Figure 1-3). Two alternatives, the Proposed Action and No Action are evaluated for Tract A. The proposed action for Tract A is construction of three office buildings in three phases. No Action assumes the site would remain undeveloped. Three alternatives, the Proposed Action (B1), Alternative B2, and No Action are evaluated for Tract B. The Proposed Action is development of three office buildings in three phases;Alternative B2 proposes a seven-story building and a four-story parking garage. No Action assumes the site would remain undeveloped. 1.2.1 Tract A Alternative Al (Proposed Action) The Proposed Action for Tract A is to construct three office buildings with surface parking in three phases over a four year period - Phase 1 scheduled for construction in 1990, Phase 2 in 1993, and Phase 3 in 1994. Table 1-1 presents a summary of features of the Tract A Proposed Action. See Figure 2-2 in Chapter 2 for a full description of the Proposed Action for Tract A. 1-1 Seattle 1M Tacoma d • . shington Olympi .3 "' `` ''` `'11 Bothell. I Woodinville "IIIIIIIIIIIIIIIIIIIIIIIJIIIIIIIIIIII Duvall ` L. 2!:: , iliMaire: . .Redmond 'Nkyi' ..;;;;;;-;--„;.::'*,:„. ..,___.::—a ` :;<:;.. Carp. ion _`. iiiipi :.... Medin liniiregiStri.t.C..‘ Bellevue ii • I- �' I-5 :::::::::.jr reston Issaqua 9 Rent, ` ` Upper • ' estop Cedar M n kwila t Vashon .:> €> `> ` <: - Island )L - #, maple ...,.ii::::. *.ii::::iii:i:::::iiiiiiiiiii:i:.:::::iiiiii:::.::.. Valle y Project Location Figure 1-1. Regional Map N9c, N EMPIRE WAY 9'L y 5, RENTON , 1. *:".:;:•rh.:::::"::::::.::i.::::: ••• SW 7TH 5 BLACKRIVER .. 0 CORPORATE I. GRA°v 1° PARK 405 Do TO FA SEA-TAC AIRPORT 4 MILES n LONGACRES SOUTHCENTER � v o m N m cn D VALLEY m m GENERAL HOSPITAL S 180TH I I Figure 1-2. 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Summary of Features of Tract A and B Proposed Actions Alternatives* Al B1 B2 Project Feature • (Proposed Action) (Proposed Action) (Single Building) Number of Buildings 3 (phased) 3 (phased) 1 Building Square Footage Phase 1 23,582 71,000 285,000 Phase 2 80,000 85,575 Phase 3 80,000 156,625 Building Height feet/stories Phase 1 24/1 57/4 93/7 Phase 2 57/4 45/3 Phase 3 57/4 93/7 Parking Garage 40/3 50/4 Number of People 935 1,450 Parking Stalls 791 1,296** 1,151*** * Does not include No Action Alternatives (A2 and B3) which assumes no development of the site. ** 496 stalls on surface parking and 800 stalls in three-story parking structure (Phase 3). *** 551 stalls on surface parking and 600 stalls in four-story parking structure. • 1-2 The development is intended to be consistent with the Office Park (O.P.) zoning designation of the site and with the environmental constraints and rookery protection guidelines defined for the site. Alternative A2 - No Action Under Alternative A2, the No Action Alternative, the site would not be developed and the objectives of the project applicant would not be met. The site would remain open and, with time, natural succession would result in shrubs and trees becoming dominant on the site. 1.2.2 Tract B (Phase VII) Tract B is a 15.7-acre site located east of Tract A and north of Oakesdale Boulevard (Figures 1-2 and 1-3). Two project alternatives (Alternatives B1 and B2) plus No Action (Alternative B3) were defined and evaluated in this EIS. Alternative Bi - Proposed Action Alternative B1 is the action proposed by the project applicant, FCDC. The proposal is to construct three office buildings in three phases - Phase 1 scheduled for construction in 1990, Phase 2 in 1991, and Phase 3 during 1992 and 1993. Table 1-1 presents a summary of features of the Tract B Proposed Action and Alternatives. See Figure 2-4 in Chapter 2 for description of the proposed action for Tract B. Alternative B2 - Single Seven-Story Building with Parking Structure Alternative B2 would include the construction of a single seven-story building and four-story parking garage (Table 1-1). Alternative B3 - No Action Under the No Action Alternative,Tract B would not be developed and the objectives of the project applicant would not be met. The site would remain in open space and vegetation would, over time, change to dense shrub and tree growth. 1.3 Applicant's Objectives The objective of the project applicant is to develop professional office space within the City of Renton that is consistent with O-P zoning. The applicant has defined a demand and need for office park space and has over the years shown an intent to develop the Blackriver Corporate Park property. 1-3 1.4 Impacts and Mitigation Measures Tables 1-2 and 1-3 present a comparison of impacts of alternatives for Tract A and Tract B. I The Tables present an analyses of environmental features as discussed in detail in Chapter 3, a brief description of the impacts of each alternative on those features, and mitigation measures proposed to minimize the impacts. The following criteria were used to evaluate the impacts of the proposed actions and alternatives: • Consistency with local, state, or federal laws, or regulations, and local land use plans and policies (e.g., City of Renton ordinances and comprehensive plan; _ wetland regulations); • Meets or exceeds recognized quantative criteria or standards (e.g., water quality criteria for freshwater organisms; EPA noise criteria, etc.); and • Impacts on regional or statewide populations of threatened, endangered species or unique species. 1.4.1 Tract A Impacts Proposed Action. Minor filling of the site would occur with the addition of up to 10,000 cubic yards of fill. This would not represent a significant impact since the site had been previously filled. Other impacts would include increased runoff to the P-1 Pond (not a significant impact because of the capacity of the P-1 Pond is adequate to handle stormwater flows); short-term insignificant increase in sedimentation during construction; loss of 11.6 acres of grass/shrub vegetation and wildlife habitat (a significant impact that cannot be fully mitigated); increased noise caused by construction and day-to-day activities on site; increases in light and glare caused by building and parking lighting and automobiles; and minor inconsistencies with some City of Renton Comprehensive Plan and Valley Plan policies and objectives. A summary of those impacts appears in Table 1-2. Mitigation Measures Table 1-2 presents mitigation measures for the significant impacts of Tract A development. These mitigation measures would reduce the magnitude of impacts to less than significant levels. . 1-4 . Table 1-2. Summary of Impacts and Mitigation Measures for Tract A Alternative - Blackriver Corporate Park Tract A Environmental Feature Al (Proposed Action) A2 (No Action) Mitigation Measures Topography/Soils No significant adverse impact - No impact No grading and filling should be done addition of up to 10,000 cubic during the period from February 15 to yards of fill; action would be June 15. consistent with Valley Plan policy since site was previously filled. Foundation No significant adverse impacts No impact None necessary anticipated - single-story building(Phase 1) to be • , developed with conventional shallow foundation; Phase 2 and 3 buildings will use auger cast-in-place piles or driven piles. Seismic No significant adverse impact, No impact Design of buildings will follow UBC site has low potential for standards. liquifaction. Air Quality Not applicable, no parking No impact garage planned. • Surface Water Movement No significant adverse impact No impact Drainage plan must be prepared as • due to large capacity in P-1 required by City of Renton. Pond. Surface Water Quality No significant adverse impact; No impact • Prepare and submit Erosion Control assuming incorporation of Plan to City(see Section 3.4.2 for mitigation measures described details); herein. Tract A Environmental Feature - Al (Proposed Action) A2(No Action) Mitigation Measures • Install and maintain oil/water separators; and • Install biofiltration swales per WDOE standards. Vegetation No significant adverse impact - No impact • Plant native lowland trees and shrubs on 11.6 acres of grass and shrub edge of P-1 Pond and Springbrook affected; no endangered or Creek (see Section 3.5.1 for species list); threatened species. • Develop detailed planting plan and specifications; and • Participate with the City of Renton in a similar planting program with King �-► County and SCS on land adjacent to the P-1 Pond and Springbrook Creek. Wetlands No significant adverse impact. No impact None Necessary Wildlife Resources Significant adverse impact that No impact • Plant and maintain a linear buffer of cannot be fully mitigated. Loss native vegetation along P-1 Pond and of 11.6 acres of terrestrial Springbrook Creek (see Section 3.5.1 for wildlife habitat. species list); and • Construct all buildings in earth or natural tones with non-reflective coated or tinted glass or hoods (Phase 2 and 3 only), on windows facing P-1 Pond and heron rookery. Unique Terrestrial Resources No significant adverse impact No impact • Establish a no-build zone for that to herons so long as heron portion of Tract A lying within 600 feet protection guidelines are of the nearest rookery tree; followed as listed under mitigation. • Tract A Environmental Feature Al (Proposed Action) A2 (No Action) Mitigation Measures • Prior to the construction of buildings, plant trees and dense vegetation at the northernmost portion of the site within no-build zone 600 feet from the nearest rookery tree; • Construct project in phases,with first phase of development furthest from the rookery; • After coniferous vegetation in the buffer zone has achieved a minimum height of 20 feet,begin construction of the Phase 2 and 3 buildings. Buildings should not exceed four-stories in height (unless F, building is set back 1,000 feet or greater distance for the rookery); • Create dense vegetated no-build buffer along the eastern boundary of the site adjacent to Springbrook Creek to provide a vegetated ingress and egress route for herons leaving and returning to the rookery; • Construct the building in earth and natural tones; glass facing the rookery should be non-reflective, coated or tinted glass, or hooded to minimize disturbance to the birds; • Exclude human access to the P-1 Pond during the period from February 15 to • June 15; and Tract A Environmental Feature Al (Proposed Action) A2(No Action) Mitigation Measures - No exterior construction activities should occur within 600 feet of the rookery during the period from February 15 to June 15. Noise Short-term significant impact No impact • Outdoor construction activities should be during construction. Most restricted to 7:00 a.m. to 8:00 p.m. significant noise would be during the summer months and 7:00 a.m caused by pile driving. Impacts to 7:00 p.m. during the winter months; can be mitigated. • All construction equipment should have sound control devices no less effective than those provided on the original equipment; - All construction equipment should 00 00 comply with pertinent equipment noise standards of the U. S. Environmental Protection Agency, • The use of auger cast-in-place piling construction would be preferable to pile driving; • If pile drivers are to be used, they should be modified or designed to generate peak noise levels of less than 95 dBA at 50 feet (see Appendix C for information on pile driving techniques designed to reduce noise levels); and • Limit pile driving activity to a period from August 1 through February 15, the least sensitive time period for great blue heron use of the site. Tract A Environmental Feature Al (Proposed Action) A2(No Action) Mitigation Measures Relationship to Existing Land No significant adverse impact. No impact None necessary Use Relationship to Plans, Zoning No significant adverse impact. No impact None necessary and Shorelines The Proposed Action is consistent with the comprehensive plan, zoning and Shoreline Master Program setback requirements. Light and Glare Potential minor impact of light No impact - Use of downlighted light structures in from buildings and parking that the parking areas to confine light to can be mitigated. ground level; Use of dense evergreen vegetated screen to reduce the effect of automobile headlights, particularly on Tract A which has no existing dense, tall-growing vegetation; and - Use of non-reflective coated or tinted glass or hooded windows for the sides of the buildings facing the heron rookery. Historic and Cultural No significant adverse impact. No impact None necessary Traffic This element previously No impact None necessary as a part of this EIS. evaluated in Grady Way Corridor Transportation Improvement Study. Parks and Recreation Incremental increase in the use No impact - FCDC should work with City to plan of City park facilities as a and design pedestrian trail system on result of project. Tract A and following rookery protection guidelines. Table 1-3. Summary of Impacts and Mitigation Measures for Tract B Alternatives - Blackriver Corporate Park Tract B Environmental Feature B1 (Proposed Action) B2 (Single 7-Story B3 (No Action) Mitigation Measures Building) Topography/Soils No adverse impact - addition of Same as B1 No impact No grading and filling should be done up to 36,000 cy of fill; action during the period from February 15 to June would be consistent with Valley 15. Plan policy since site previously filled. Foundation No adverse impacts anticipated - Same as B1 No impact None necessary all phases would require use of auger cast-in-place piles or driven piles. e Seismic No adverse impact - site has low Same as B1 No impact Design of buildings will follow UBC potential for liquifaction. standards . Air Quality Significant adverse impact- CO Same as B1 No impact Proposed Action (B1) should have: concentrations in garage could exceed the maximum one-hour - Minimum of 40 percent open sides (side and eight-hour ambient standards facing rookery must be fully enclosed); without adequate open area of two exits. - Top level 100 percent open (with facade on rookery side to reduce line-of-sight); and - Two exits (on side opposite rookery) Alterative B2 measures same as B1 except that minimum side opening should be 55 percent. Surface Water No significant adverse impact due Same as B1 No impact Drainage plan must be prepared as required Movement to large capacity in P-1 Pond. by the City of Renton. Tract B Environmental Feature B1 (Proposed Action) B2 (Single 7-Story B3 (No Action) Mitigation Measures Building) Surface Water Quality No significant adverse impact Same as B1 No impact Same as for Tract A (Table 1-1). assuming incorporation of mitigation measures listed herein. Vegetation No significant impact 9.3 acres Same as B1 No impact Same as for Tract A (Table 1-1) plus of scrub alder,grass, and scrub following: cottonwood affected;no endangered or threatened - Insure protection of mature cottonwoods species. per Ordinance No.4219; Wetlands Building and parking would be Parking would No impact - Establish a 25-foot wide no-build buffer constructed within 25 feet of encroach within 25 zone from edge of old Black River edge of old Black River channel feet of wetland channel wetland; wetland. edge - Develop detailed planting plan; and • - Develop drainage plan with biofiltration - prior to discharge to wetland. Wildlife Resources Significant adverse impact that Same as B1 No impact • Plant additional native trees and shrubs cannot be fully mitigated - loss of along Springbrook Creek and between 10.8 acres of terrestrial wildlife buildings, parking garage, and rookery; habitat. and - Construct all buildings in earth or natural tones with non-reflective coated or tinted glass or hoods on windows facing heron rookery of Springbrook Creek. Unique Terrestrial No significant adverse impact to Same as B1 No impact - Plant trees and dense vegetation at the Resources herons so long as heron northernmost portion of the site back 400 protection guidelines are feet from the nearest rookery tree; followed. Tract B Environmental Feature B1 (Proposed Action) B2 (Single 7-Story B3 (No Action) Mitigation Measures Building) - Any buildings located 400 to 600 feet from the rookery should not exceed four stories in height,with taller buildings only beyond 600 feet; - Create dense vegetated buffer along the western boundary of the site to provide a vegetated heron flight zone along Springbrook Creek; - Construct project in phases,with first phase of development furthest from the rookery, - After coniferous vegetation in buffer zone N has achieved a minimum height of 20 feet, begin construction of remaining phases; - Maintain mature cottonwoods,specifically along the historic Black River channel, at the northern portion of the site, and on other portions of the site supporting mature trees (e.g., near the south portion of the site); - Densely landscape surface parking to minimize the visual impact on great blue herons; - Buildings should be constructed in earth or natural tones, and glass facing the rookery should be non-reflective coated or tinted glass or hooded to minimize disturbance; Tract B Environmental Feature B1 (Proposed Action) B2(Single 7-Story B3 (No Action) Mitigation Measures Building) • No exterior construction activities should occur within 600 feet of the rookery during the period from February 15 to June 15; and • Walking and jogging trails and other forms of recreation are not permissible closer than 400 feet from the rookery. Additional mitigation could include: • Shifting Phase 3 of Alternative B1 slightly to the east and south; or ta3 Shifting density from Tract B to Phase 1 of Tract A to reduce height of Phase building. Noise Short-term significant impact Same as B1 No impact Same as for Tract A (see Table 1-1). during construction - most significant noise would be caused by pile driving- impact can be mitigated. Relationship to The proposed seven-story Phase Alternative B2 No impact • Reduce building height or shift density Existing Land Use 3 building would be three- to would be three-to from Tract B to Phase 1 of Tract A. four-stories taller than buildings four-stories taller in immediate area, however, than building in Renton has no height limitation. immediate area Tract B Environmental Feature B1(Proposed Action) B2 (Single 7-Story - B3 (No Action) Mitigation Measures Building) Relationship to Plans, Phases 1 and 2 consistent with Height of No impact - Reduce building height or shift density Zoning, and Shorelines Comprehensive Plan, zoning and Alternative B2 from Tract B to Phase 1 of Tract A. Shoreline Master Progress would be setbacks. Phase 3 seven-story inconsistent with building inconsistent with Comprehensive Comprehensive Plan policy of Plan policy of low low rise office buildings adjacent rise office buildings • to the P-1 Pond. adjacent to the P-1 Pond Light and Glare Potential minor impact of light Same as B1 No impact Same as for Tract A (see Table 1-2). from buildings and parking that '.. can be mitigated. .P' Historic and Cultural No significant adverse impact. No impact No impact None necessary. Traffic This element previously evaluated Same as B1 No impact None necessary as a part of this EIS. in Grady Way Corridor Transportation Improvement Study. Parks and Recreation Incremental increase in the use Same as B1 No impact FCDC should work with City to plan and of City Parks facilities as a result design pedestrian trial system on Tract B of project. and following rookery protection guidelines. 1.4.2 Tract B Impacts Proposed Action. The most significant impacts associated with Alternative B1 (Proposed Action) will be the.construction of the Phase 3, seven-story building. The proposed seven-story building would be inconsistent with the locational policies of the Land Use section of the Valley Plan (City of Renton Comprehensive Plan 1986). The Valley Plan designated the area surrounding the P-1 Pond as Manufacturing Park/Multiple Option - Office. The policy specifies that office activities be encouraged in "low rise building" of small and medium scale. As proposed, the seven-story buildings in Phase 3 of Alternative B1 would conflict with that policy. However, the proposal would be consistent with the site zoning. The City does not have a height limitation ordinance. Additionally, the Phase 3 building as proposed would,lie close to one of the great blue heron flight zones. While impacts of a seven-story building in close proximity to the zone are unknown, there is a potential for causing disruption to the birds entering and leaving the rookery. The Phase 1 and 2, three- and four-story building would be more consistent with the City's Valley Plan policies for "low-rise" buildings in the area. In keeping with that policy, three- and four-story buildings have been recently constructed adjacent to the site. Other impacts of the Proposed Action include the addition of approximately 35,800 cubic yards of fill (not a significant impact); increased runoff to the P-1 Pond; increased sedimentation during construction; loss of 9.3 acres of vegetation and wildlife habitat; reduction in wildlife numbers on the site; increased noise caused by construction and day- to-day activities; increases in light and glare caused by building, parking and automobile lighting; and minor inconsistencies with City of Renton policies. See Table 1-3 for a description of those impacts. Additionally, without sufficiently sized exits and open wall area on the first three levels of the proposed parking garage, carbon monoxide (CO) concentrations would exceed ambient standards 9 parts per minute (ppm) in the garage and in the air 500 feet beyond the garage. However, proper design of the parking structure would eliminate these air quality impacts (see Table 1-3). Alternative B2. Impacts of Alternative B2 would be similar to those for alternative B1 (see Table 1-2). No Action. Under Alternative B3 (No Action) there would be no significant impacts. Mitigation Measures The potential impact of the Phase 3 building could be minimized by reducing. the ' height of the building to three-or four-stories, and/or shifting the building toward the center of the site. • 1-15 Measures to reduce the magnitude of impacts to "less than significant" levels are identified in Table 1-3. 1.5 Adverse Impacts that Cannot be Mitigated 1.5.1 Tracts A and B The Proposed Actions (Al and B1)would result in the loss of 11.6 acres of terrestrial wildlife habitat on Tract A and 10.8 acres on Tract B, impacts that cannot be fully mitigated. The,result would be a local reduction in populations of terrestrial wildlife species (rodents, songbirds, California quail, raptors and carnivores such as raccoons), even with the protection of adjacent areas and development of linear buffers along Springbrook Creek and ;he P-1 Pond. The loss of the grass and shrub habitat will not significantly affect the heron food supply or feeding activities. • 1-16 - CHAPTER 2 I CHAPTER 2 DESCRIPTION OF THE PROPOSED ACTION AND ALTERNATIVES 2.1 Introduction This Draft Environmental Impact Statement (DEIS) has been prepared to satisfy requirlements set forth under the State of Washington Environmental. Policy Act (SEPA, Chapter 43.21C RCW), and in the SEPA guidelines (Chapter 197-11 WAC). As required under SEPA, actions that are likely to have significant environmental impacts must be - . analyzed in an EIS. First City Developments Corporation proposes to construct office buildings on one 12.7-acre parcel (herein referred to as Tract A) and one 15.7 acre parcel (herein referred to as Tract B) of land zoned Office Park (O-P) by the City of Renton. In August, 1988, FCDC submitted a SEPA Environmental Checklist, grade and fill permit application, application for site plan approval, application for Shoreline Substantial Development and application for Building Permit to the City of Renton for approval to construct a seven-story office building on Tract B. In November, 1988, the City of Renton Environmental Review Committee, as lead agency, determined that the proposed action was likely to have a significant adverse impact on the environment and that an EIS was required. A scoping notice was sent to agencies, tribes; and the public to comment on the scope of the EIS. Scoping issues identified by the Renton Environmental Review Committee for analysis in the EIS included: • Water quality; • Wetlands and hydrology; • Flora and fauna, particularly in regard to great blue heron and waterfowl; • Land use; and • Light and glare, as it affects wildlife. A Preliminary DEIS was completed mid-1989 and was submitted to the City of Renton and FCDC. The proposed actions evaluated in .the PDEIS included a "programmatic" analysis for Tract A, and a single seven-story building for Tract B. Based upon review of that PDEIS and rookery protection guidelines developed by JSA, FCDC revised the site plans for Tract B and later added a proposed project for Tract A. The revisions were made to minimize the impact of the project on the great blue heron nesting rookery,wetlands on the sites (specifically the old Black River channel on Tract B), groves of cottonwood trees and Springbrook Creek and the P-1 Pond. This DEIS analyzes the proposed site plan and alternatives for Tract A and the revised proposed action and alternatives for Tract B. In addition to the issues identified 2-1 through the scoping process seismic risk and building stability; air quality, for the proposed parking structure; noise, particularly with respect to the heron rookery; and parks and recreation will be addressed in this DEIS. The alternatives are described later in this chapter. 2.2 Project Area The project site lies northwest of the City of Renton's central business district, in the vicinity of the old Black River channel, at the confluence with Springbrook Creek (see Figure 1-3). The site is bounded on the north by the P-1 Pond (a pond established by the Soil Conservation Service [SCS] to store runoff from developing lands in the Green River Valley) and the remnant portion of the Black River riparian forest, and on the south by Oakesdale Boulevard and Metro's wastewater treatment facility. Tracts A and B are bisected by Springbrook Creek which flows north from the Green River Valley to the P-1 Pond. Naches Avenue and S.W. 7th Street lie to the east of Tract B. FCDC is presently constructing a business office complex on the east side of S.W. 7th Street. 2.3 Project History Proposed development of the site began in 1979 when First City Equities, (now First City Development Corporation), applied to the City of Renton for a rezone of the area from General Classification (G) to Manufacturing Park (M-P) and for the development of a warehouse/business park/office park complex called Earlington Park. In July, 1980, a DEIS was prepared for that project, and the Final EIS in February, 1981. The "Phase VII" project, originally proposed as a part of that Earlington Park development, has undergone extensive revision and currently includes two elements -Tract A, consisting of 12.7 acres, proposed for three office buildings to be built in three phases; and Tract B, consisting of 15.7 acres, proposed for three office buildings and a parking garage to be built in three phases. Pursuant to the rezoning of the past decade, the study area has undergone dramatic changes. Land east of the site has been developed as office park; Naches and Oakesdale Avenues have been constructed; a portion of the riparian forest and forested wetlands south of the Burlington Northern Railroad tracks were logged and partially filled during 1987. In addition, FCDC voluntarily deeded a 27-acre parcel of black cottonwood forest to the City of Renton. This 27-acre parcel has been designated as "greenbelt" in the City's Comprehensive Plan, and with a "Natural" Shoreline designation. In addition to the Earlington Park EIS, an EIS for the Blackriver Office Park,directly north of the project site,was issued in April, 1981. That EIS addressed proposed office park development on a 71.16-acre parcel located north of the P-1 Pond. • A great blue heron rookery was established in a portion of the riparian forest sometime prior to the construction of the P-1 Pond in 1984. The presence of the heron 2-2 -. rookery has resulted in a protracted development process for properties abutting the P-1 Pond. Since 1984 the number of great blue herons nesting in the rookery has increased from 3 to 18 nests (Van Wormer 1988). In 1984, the City of Renton prepared and adopted the Green River Valley Comprehensive Area Plan of which Tracts A and B are a part. In 1986, the City rezoned the project area to O-P in keeping with the Green River Valley Plan. The preparation of this DEIS for Tracts A and B began in mid-1989 at which time FCDC had identified no specific site plans for Tract A and proposed the construction of a single seven-story (285,000 square foot) office building on Tract B. The proposed seven- story building was proposed to be within approximately 350 feet of the heron rookery. Environmental factors evaluated included presence of wetlands, significant vegetation/wildlife habitat, distance from the great blue heron rookery, topography, and distance from the P-1 Pond and Springbrook Creek. In addition, a detailed literature review was conducted to evaluate such factors as: • building height and setback from the heron rookeries; • the influence of vegetation in terms of density, height, and visual buffering; • travel zones for great blue herons leaving and entering the rookery; • lighting for building and parking; and • use of reflective glass on buildings. The product of this analysis was rookery protection guidelines for Tracts A and B and a map showing significant environmental features and setback guidelines (Figure 2-1). Using the setback and buffer zones,cottonwood tree locations,wetland locations, and lighting/glass guidelines defined by JSA, FCDC revised the Tract B site plan to include a parking structure sited as a barrier between the buildings and heron rookery; protection of the old Black River channel wetland; protection of mature cottonwoods; increasing the setback distance from the rookery of office buildings to approximately 720 feet; and establishing vegetated buffers and dense vegetation in surface parking to reduce light and glare. In October, 1989, FCDC submitted a revised Tract B site plan to the City of Renton, along with a new alternative plan showing a single seven-story office building with a parking structure. At the same time, FCDC prepared a new proposed site plan for Tract A to include three office buildings to be built in phases and setback from the heron rookery based on guidelines set forth by JSA (see Appendix B). 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';''110,•;.eityl;41.4.4.1A $.40;......,Meign. ;i':f.i: :::.::f:....::••,•.:••••:::•:::g.V.;P:i. 111'..;J:'.ig'..''',I: '..• •34.'••••''•tq't•VI:A..ii:•;:i4.4.4•10;k•d. i....:••: •'.'..•f:':;:•••••':.i kiiiiiiim gat “.1.:;•,,,•:1•.;: •.,,,,,,•••,i... 'Y.iq vigt;:agri• • Agiire„ilf 5,•;:,:?;m:.... ..,:!...;:••:r..::..,r•,.•,..,•:,.•:::::.:.•••.••• ,•••••... , • -,...,I• ......,,, ,4y.w.8,,,40.4•oitn9Kovx., ii.i;;:k , • - ... - • •••• .• .. .,•,:.:„.....,.••••,;,.,!•••A 11;mr.tamictrA• • ,?4;4: 1.71'r , ;'4::,..„ 4...1,,,,,,,.t. .:.,411,111:,*...•0"ft,e.;...• :..!...",tg. , • • '•'••' ""t ...•.ki-irr•`V:•:'' ..':efL;;.•.0,..AN.c.f.s......: , •- • I. ' . . . • , , • . • • ' • • • • •. , , • ' , . ' • • , • • 1 . . . . • • , •, , I , 2.4 Project Need The project applicant, FCDC, has defined a demand and need for office park space. in the City of Renton. Tracts A and B have been zoned O-P by the City of Renton. The Office Park zone was established by the City . . . "to provide areas appropriate for professional, administrative, and business offices, certain manufacturing activities, and supportive services in a campus-like setting (Ord. 4186, 11-14-88)". FCDC has owned the property since 1979, and over the years has shown an intent to develop the property, beginning with the Earlington Park EIS in 1980, a mitigated DNS in 1986, a grade and fill permit application in 1987, and a SEPA Checklist, grade and fill permit application, and site plan in 1988. 2.5 Description of the Proposed Action and Alternatives As previously mentioned, two separate actions are proposed as a part of this EIS, development of three office buildings and surface parking on Tract A, and development of three office buildings and a parking garage on Tract B. FCDC has prepared site plans for Tract A and Tract B. 2.5.1 Tract A Alternative Al - Proposed Action The Proposed Action for Tract A is to construct three office buildings with surface parking in three phases over a four-year period. Phase 1 is scheduled to be constructed in 1990 and consists of a single-story±23,582 square foot office building and associated parking to be built in the western third of the site. Phase 2 is scheduled to be constructed in 1993 and consists of a four-story ±80,000 square foot building and associated parking to be built in the eastern third of the site. And, Phase 3 is scheduled to be constructed in 1994 and consists of a four story, ±80,000 square foot building and associated parking to be built in the middle third of the site. The completed project will include a native riparian vegetative buffer between the development and the P-1 Channel, a biofiltration swale for stormwater, pedestrian areas adjacent to buildings, landscaped surface parking, a total of 791 parking stalls, and adherence to zoning and shoreline setback requirements and restrictions and restrictions established for the protection of the heron rookery. The development is intended to be consistent with the O-P zoning designation of the site and with any environmental constraints and guidelines defined for the site (e.g., shoreline management regulations, setback/height requirements to insure protection of the great blue heron rookery, wetlands, and wildlife habitats of the P-1 Pond and adjacent areas). Figures 2-2 and 2-3 present the proposed site plan for Alternative Al. 2-4 i .01‘..1 r STATION • {�j •� `4. TABULATION �"S' AL"°"= �`• f'`'‘ � .• Site Area ± 525,536 S.F. w �" '• 'ilT •' Building Area ± 183,582 S.F. L ;4,�` '��},� �� ,C.- %�+'' Footprint ± 63,582 S.F. 0 : t`4tc�..,` '- ,� j ,/ 4' Gross Coverage ± 34.9% Q. - -- . qi yse. ." Site Coverage ± 12.196 I '+•qy YVik • ,,: ,�.pi• Parking ± 791 Stalls Manufacturing w• :AYE �:��;.� ratio ± 1/232 S.F. al I;1 Sewage Treatme . . ' `+`?"f:� \�.,. ` L Q O VICINITY MAP V=200'• 3rd Phase- 1994 / A ,..`•300.56• = •\ b�„ ,,� Q' I- • P-1 Channel / — — • L Q • ` Ge�Et / \ =`` ` soo r U 021 V �.�' a a` • '' / ea.-.ter ` p s N 90.0000•E 367D7 x �R=7) `,�. 1 '�}• p, •` 1-17_, EM I IT-IT ���•I I I Igri.J 1 11 i 19 I I 1 I I I'a �e�• C �;�0 9A� _ a,1 • '� �80,000 SF, '�B00. r •= I1J`/ 9 E �i!I R=1cs of ../ \ 1 kiftl IVO St4N * % • S 70-46•34.: • -. •$4.4.40. \--. .....; -Wit, . .....,,,cii, .....„,.. v. 41IW ±23,542 SF.' i ,---- .---- -.1. •O-- e ' • 0,000SF. - et•:1♦ - • _ . % -�.s._aft! ' . ♦ — —:-..-..._.:.., � i1 e - -,.444., _ /- , — ,--T . . .., ------;. _ 4.1111104%spa, :',,,---tt . I 6:41.11 ‘ ....' • ., � • "R" PROPFF . ,.,} .1441 ....., - . a ACT A t s e T:At.....cernaQ \ c 7 \ ' •, -`- _ / ' NO DESCRIPTION DATE la ‘ -.. • ic=vl•Io.1 t-tc cvn,rk in-a. 1st Phase- 1990 � • ` -�. �- _ ♦,� 1 / , ,- -,, 11. - --•\ . % Ill4 -: sr. ee_ ` uu ry cur �. • ON.,) dhAL 41 ex... a 2nd Phase- 1993 z0 \� �i TRACT A / BURLINGTON NORTHERN 2' - - _ --• - - ALTERNATE SCHEME ED °} _ Z_� SITE PLAN - BLACKRIVER - ��. CORPORATE PARK • F7Nt I RENTON. WASH INGTON •-- - - I F -A. -4 AIA ae Inc FIRST CITY DEVELOPMENTS CORP. I 1 ( I z. ; ��; PHASE vm Figure 2-2 ALTERNATIVE Al - PROPOSED ACTION' Fa{ 890171SI • JOB NO.:89017 SHEET NO OF: EZIalEZEi -- ..- - - . - . --.. DATE: 9.20-89 DRAMN: j SITE PLAN h/4oj 1 CHEOc::BB PLANT MATERIAL LEGS RIPARIAN PLANT LIST • p .�j ,� h-y P� sese 0... Ho-W.rrorte,off;f1R.1. 0 ._ F q C�a+lb hrUCAZei i- �''j ,11-10 i-1441 $ ter-( -- 142ef I.ar rff,l a+l.it.0.,. 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P-1 Channel >� aa+ Fw,1T r firki me w••G.,� eifti l % -'-'M"�� '_`0 Ni.~ e I.Is O Q Itvrrtl-w-f � rfarAr41 h09 ►,a �v� �c � CC �/,4...:ra " . '' . T-,..--- -.4ibt:::Co".....:' ;,_.,• i c.) 06 rIA74...L. uMrriiMltZiII . ti•. _ © : �` �''` `e(�a�Ge P i ��rit �- �I•l � i' , ��• ,�c,r �•```�," E Q� o Lyi _ xH tT ' III. ' I', , � c I�rt i. �6 CR,r�i '` 0 `• _ '' �a\� •0i - o'. ���� C �, y/�� �,9 t '� o >_ � .. lk 1 •"rtt 1b /Yt� (`i\�' ya I`� �1�� '1?1i.� story" \ a 1�1 ••-• m r i3 I ir---- "4‘,-,..1., l ' .�. , {�r#t © ��� '� � (�- ;eo,000 SF. " '� , o li! m ,_ r.. -. kke _ �• \p, � `I ,�1�$' vri t. cat(>�/�E "� .� M• .„� � '/►'►•LA � �lF �'r�; %A \ , ;,,�.. 0.�� +02-i #P3`"4.144.'<r �e ` O ai Q o .�I uwa s��• !r"� ► •' �9Vti - r \4:. �` /���.��� ►ln , • o = cm s` o s a.� �7.1 r►� no+M co-* Ruh Floor 20.0 ��/n %. ' \;y t`%1 ��':-i�7a;04.* l`�//\- a i '.. ►I \� \ 13,582 SF.' 1 - /,/i ce_ 4.�.�.� ,b -� ,` :��•�i h� • B\ ►. 111/1077. .tee ��� - v •• .-. .• /: �� i \►��►. ALA t •. 4., 4 �J `\' `s\ S�Q 7j�i 1•` �� �/ )A �•11r ft i -: `• r�\�� �, (Or �, a ±80,000 S.F. . L wa �` UY�GiJt- r ,�'') - ` �iW:{GFf.11I ice.` .f.,641 '�Y' yclAJ , .... • . \I ` Jr4 j- et / •hi:).aa • ►:.;��i.,y� t.��' y. .Ir_�. �`�.(� P'`'1�- `\'�•\V���.a-�r,� �• `'�� ` , WA • N tr" • ....,.....41.,...., A. _ „„,4,... • _ _.-i -"- - -....21111111111,.. Allt • ..---- 1.'4; 0', ,f, .. 'V. 2 it,. 4.7"; : #.-'4‘ 01.,.\. 6\ jt gi'441 L'''f- 1/ern i , i., -.-,,, • •...-- ,- _-,,.4.1. -1,70./ Aii.tity -4-0 .,...-*,. f, ., grk ' .:7.(:S. 1114414. 41\'' .-, .-• ... tie.. s, ...4**...) Vria , ac • 04A 10, .%. a.%., "4-....)0.4 #.7-2,,,,,,, Eacrsr,..G cucn or. Saris_ , �yY1 �ii\ { l'� 01 •N ,.•if 1. ��`f el- Na DESCRIPTION DATE T �: Or • 4J� M,,. wnfl f�+f• �\ ._ h�� .rre ctsw twos --n '-) Illti.• - ' • .;,. 1.1r- It- illt -'11 41 ON n1;-,' 41!%., - !;.‘ * 1 '41. Aye �� +; 'i! t: / i 41 s:. vivevifti„,. . . . _. i.c.., 4 . • i E E CO I ....ill,' . - ,f J i 74 ate 0 -"''11111 .,4IA*lir • V elli, la •- 'or t F L, : 0. . .. Nia.... .k.--—46,k, ..„ .., .01,0.. I , .....„...........<- , 77 �ah+A�Q :L { — f —,• i — r, 22 23 zo ` — _ _ _ — LANDSCAPE PLAN . VN Jernative • Al-Landscape Plan vas; e9on\sl Z J08 NO.:69017 SHEET NO OF: DATE: 714M ORANN:r LANDSCAPE PLAN Ime" 1 CHECK: - Alternative A2 - No Action SEPA guidelines (WAC 197-11-440) require that the No Action Alternative be evaluated and compared to the other alternatives presented. Under the No Action Alternative, the site would not be developed. Tract A would be left as open space and available for development consistent with zoning of the site sometime in the future. The No Action Alternative would not meet the objective of the project applicant to develop the property. Under No Action, however, there would not be any of the environmental impacts associated with construction or operation. 2.5.2 Tract B Alternative B1 - Proposed Action The proposed project is the construction, in three phases, of a three office buildings: • Phase 1 is the construction of a ±71,000 square foot, four-story office building with associated surface parking in 1990; • Phase 2 is the construction of a ±58,575 square foot, three-story office building and associated surface parking in 1991; and • Phase 3 is the construction of a ±156,625 square foot, seven-story office building and a three-story parking structure in 1992-93. Parking for the completed project will include approximately 496 surface parking stalls and 800 stalls within the parking structure. Other features of the proposed design include preservation of the old Black River channel and associated wetlands, located in the northwestern portion of the site; retention of a majority of the mature cottonwood trees; landscaping and buffering of development from natural areas; and adherence to shoreline and zoning setback requirements and restrictions established for the protection of the heron rookery. The site plan for the project is shown in Figure 2-4, and the landscape plan is presented in Figure 2-5. Alternative B2 - Seven-Story Building with Parking Structure Alternative B2 includes one seven story office building, a four-story parking structure and surface parking. The development is designed to be consistent with the zoning requirements and environmental constraints (e.g., shoreline management regulations, setback/height requirements to insure protection of the great blue heron rookery, wetlands, and wildlife habitats of the P-1 Pond and adjacent areas) of the site. The proposed office building is expected to provide ±285,000 square feet of office space. Parking will consist of ±551 surface and ±800 within the proposed parking structure. As with the Proposed Action, this alternative includes preservation of the old Black River channel and associated wetlands; retention of a majority of the cottonwood trees; landscaping and buffering of development from natural areas; and adherence to shoreline and zoning setback 2-5 1- / • . / _- 4'MA..Lonv444C0 v•9 ewe+EQOJ.4:<r `` .1 r 4.9'O+.LTm:•I1129, ` i/ /I W/E UCr46fi7N UC{T • ` /,/ / W1FMOPN.NEST / p T ` 04. 4.qr I L.. • /is-1 Cheroot • .` . -- - LL aCKS Detention Pond v ` • \; Far �°°'��'`� I VICINITY MAP • {. ` �.; \ � S!B'159PE ,5�3T I! 1 ,� / s��PENW' W CS / O��4. :w•�a �u-� ._ — , l _� _ } J.$1�[KRIVERk'•<%.'ri.;: ,,,• Lo /"i� �\ t \ y �i r_ ��i .I a '� COReoPn STinie ' 1...... S 90.00'00'E 274.74' 71 ] ! •� LARK p®� M t 1 -. a LEr:�CflES O U ```\ /1' I! w, ` w:- •/ \ •. I 1 J __. SOUTHGENTER - a Q • .• , , 0 . T. :I z! t. • 4.,,.., to IVALLEY •1 I \-,. . • - GENERAL `" L-' , . : ��� Q 1 HOSPITALm % 3rd Phase-1992 3 -•.4p� r �' , `` <'• ` � / =T i l — I\ vr'iiil rariculy Siruc iure /r �' ,- .. ..„,_,,_,r • 0.s ,/), - = i 4, ( • ' :._ HERON EXHIBff U)I I l�f/> a -' li \ �J w �M _ `c fil • /,ram la' i6. r' �\ \ �\s• kl,i 1 i ii� 7v o- , IE.�M / P ` NEROH ROOKERY i / W M / � \ � I I�-AIL\(SYN2v- TYR) 4:7('.152: /• / 1 032. k-) li. ';' --,„ 1.� r r Q'i/ l / - y Ithi, 3S`�• / _ li \� i li\ i 0. › �.a:�a.alcn _,- . / / �/ �� Q� T \ ,t ` .y ; )17/-- Channel- �-/ • __ Y'G`I< it . . ' ------ .--- - .,... ,N, \ , ...„ .\ '/ % / / r/ TS/ \ / l� \-���':i • ,r. IT PMse■A__..--. 1 / I , I, A1/4. I . �r t/ q-'- { „at sue• \ f4‘ \.,--..-...11‘..:A.,11t:ii,01;000,-galigri •' \ ��occi�`'F1 ' t 1 F ° • —�L 1 S f f, vs • i', �� -C_� 13 \� R-x-Z.-—. _ 0 )zt NO OESCOPTd DATE r r1 ` ��� i ` �' / -��� Jif Ti�'•3-j-o _ - Oak`s 1 1 ta: �� K ' / T— _.�.r�, .I41b.Will, _ :j r.�I 7x- G;_.t .,es 4 4`p'�w 7,40 �� xuew.ec a-n�1 .11�1 .'rli r - 2eo• •� I ___...A,%�akik i, may' Ir ri /.-,-:., �' /11, to:+ �. -fir si � ' 1141ft`• `\�\� _ ` ' _ • — tst Phase- lsso C &T 111 �Y"�-Tw.� -.de-, , / / -..E.O.l .Oa:J..f -V' e,Po- •-- . -E'v'- _'I\ , ! % ;. T�� ZJ To(iv 7FJ.�/.C£ .. •1-•';-- - -- --��f' -a i.�_ �•.-.._ \ / % / ...E 4.w.JC4 c.r r":: \ \ _ \ . / I:.•. / ♦ F sE+AEUT-O of VKJ.�9 . • 0 ake,„_. 1::::, •-• 's '' 'r • wAl/ , `/ Dom•L ' itlf% d:// \ ' c e TABULATION ` ` 5j' 4�,\ • �5e •%' �� y -- BLACKRIVER VN Site Area '�,� "� Y ;,%/ zu .�.= .. Pe�,.9 Building Area ±286,300 SF. .:€.,,-. 1 :/ / / �- rCORPORATE PARK Gross Coverage ±41.9% I - -e-47s"• e - 1?p,,,=.. = SITE PLAN Yj 7- Ear• �w P:a47 sy r Sit• e Coverage ±23.6% (Includes Garage) 1 1 -4o.or o• ,• % � �•h� �� ��� RENTON WASHINGTON s Parking ±1,296 Stalls ±V220 S.F. �'4""``` �.,_—,, `.� i FIRST CITY DEVELOPMENTS CORP. z �-E� .o Ip so 9a T]q Standard (±800 Structure Parked) .ESLX_e _..D. Ir. �eT,pa<t TRACT B 2nd Phase-1991 Handicap s �•� ALTERNATE SCHEME \A'•1 With Suriacc Parking •• \. JOB no- e8o4; sNEET NO OF Figure• 2-4 ALTERNATIVE B 1 - PROPOSED ACTION DATE • • • • • • 1•Ii--i-- 11: l•;'. ':::;:-- -:--"—T-::'r---:::7IL.7::"-"l -- ."."...........--::- ''''./ 47• ♦-� I MA11(rgMACE ACCESS 1 I -a ♦ �:'a.• Hf H 1 % .I. ,f". t-x /- JJJ • / ,( foo.I. ,, ;t •�1frorit "th _.\ [, -N . ip .1 I Jr II \. -..? - f 4 .4 : ,, ---, wii..9, •. .. . : k... itAlkike4blillik1114- .% / re `,.'.. ':0 °• _./iAVzwr . i i 1 It'll" Crk4 '" ''' .'r$lit ...-C, . Ikt*': igri:Ai. .‘.14-1P.t. illtir411%.::::'3:.- 2D./ -/ • • Mb ) f • • .a‘ i 5: , .0 7ett.......... t •,.. ��_::•. ...4 .1 . ~ �''�+' . t 4. t / ii ,d. ,; 40. ',14.. 1 cl!..6... '.. . . 4,10 i r ik t. / ii WO, ' st 4. 5it eifill .., r r . , ..- o \ .i.... -,6:40, 0\•c: k i p / / P ‘4,,..*V, ,. • ti - r • / Tlillt _ _ --_ _ - ft' r� _ • . ;*,� j . 4 .7%.• •t / itt/ .4. " 44.4f . ..1. . :1,.. ,„*.A ,_ p• ' 7 # .'''''.a . , 0,.,‘ , 'cl, 7 .' It :2•0 1./ 1 i I.. ...,I -, 4til • i /4 \ci. . 7 -.. , . vg. \ / , ./. .,. e ,,,, , ,,,,„,, ,,,- „. .. • , .._.....,. , ,,, , .. . ,ii ,vti,, ,ii.".}!••••••• 1. '; ..,• i .1- ,� u \, ..,,, tea:., .„N ,7ia ••. 1�..... ,, .. --- .. . . .,, -,: -,.. .,. \ /OP° i/ Ire � y�/ - •\ � 0.. y , `. f� '• ~ r, ' \ C m m• . + , �' , • • •. a _ s 74\\\ •1p.. \-1!Ksr 1 ..• ''. :•A •;' .`v 1-.01°!: ? ......4$e-as %,1\R 4.4...ff Oki) ) !I \\ .:.,,,, k/ZIA. ikaZ4listi:N..1\I_I____-a ' ••/ . it fl p A.07.... -fik,71inAtiViv."''" Qr. .1 •ffalti/ .. %b. .1 '. „.4 . oi/ 1. • T; \ _.'\ \�'`.t` ' , < $ YY • �/ A • -" �-- II '•,, •6. N • I 'CZ l \ \ �y. ': , "YY 'I / /^�.� �.......,.. •:tea — l_ 145' • Ox >', to '\ •`I \Q� I/ I •'c�S ,.:_ / r • t 1 i II; • i IA \ N. 01 •� D aHP �tiR11 O 1\•\ a`i :• ,. • ' ' - '--- '•--- ^i•t,II II C7 T it \e \: ���� / : _': —f.12"." --i. .resiii'!Ll' :m - Df _ --cam- Se- _. •_•_•_•_. I- Z lir�S I SN i ` \ ':'L/r� �X'-.� + Ica _ - 1 Ave S.W.SW - A +•1•-• -•-•- 1. .:;:".Se"------ -..-- ::::-.--.‘. I. 19 \: g a_ —Li • . 0 1 ? Z 11/\' I 1 IRS c /�1, d i,'` 1 / 41 ! I -I m "'0 >< 73 . If O i I . p"o " r . a.. o C �' WIa I ['!it • W(r t� nrlf��7 h .w :t'hbil Y imp 1 40, lk <-%4 ; liq' I§ ..ins'i 1 III t A 1 t.1 1 1 11j; lit Iti 11 1 II D PiM qillit 5 £ \ 1 1 ! - 14 Z * s 11 3it 1, 1 P I it f i f l' 4, c,4 c gi. 1 > 9 g ...49 M . ti 1 1 Z / -k tj ) -,1 I 1 l' • CO z - 14 ! 1 1 Hit o }� NORTH �. k - � i �v� e' , o � c ..1J o il_ . .s‘laiYii ; 9,ir, t 1 - 1 q 1. f "1:1 z.t 1-7 I r- I it ‘11.1 _ , . a - 0I z z . . ! r a First City Developments Corp. • -'- t-li 1 �� Blackriver Corporate Park �' a iii, .L! •v � PHASE VII TRACT B 1 ..i .. a r. F • S? • Renton, Washington y M1 requirements and restrictions established for the protection of the heron rookery (See Figures 2-6 and 2-7). Alternative B3 - No Action Under No Action Alternative, the site would not be developed. Tract B would be left as open space and available for development consistent with zoning of the site sometime in the future. The No Action Alternative would not meet the objective of the project applicant to develop the property. Under No Action, however, there would not be any of the environmental impacts associated with construction or operation. 2-6 I i,4-presrc / eoc..atis cowl.- // • , 4'Q..C.,0604.1000...r--.-,-,. , *Lie feaod..:ecr ,...s-0...00Tr0.4000D / ,...,./iew ,4RN ucr • ii . . % __. , • t _..corro.....cco ve 1 RUG--.gas 1.4-4.T. r tioott...trz • . tr °,, ce N ••29o4 . / 1 , • a itqc4, 6.2°11404,s1t' .- / k• ct• I. \ _ 4°Qter4- scre4c. 1 .A.AA 1 L- ' R. 'kw,,,, ,v, I 03 • c.------ P-1 Ch •. p annel if I \\ 1 400,14,,, Fac,Pear4 Detontkm Pond „\ •. 11 1 v:elmr:-::•.1.'f, a_ . • , -.\-......,....... ------...„.„, 0 , 1*\•\\\ WARE WV CD .:— -.....-.—....,,,,,.•_,-_-_:: ,_ 1 _ ? 4-. WI-1M • 0/ . —-- , " 5 BLACKRIVER prgroial Tem.. --------.... -1- 1.- -------- '.------- •-•-**• — r•-•... \ /•‘',12: E........... - I I PARK 00000011111111111111111 ‘,.• °A' 0 -'.. . . --- .,•••- . Ci ca • VA m .., , -...., -. • ..___ . ,,,,, ____..-.-- :it'ri 1 je:::, : SEA.TAC ' • .1 iki4. . err— \''''... ‘--- -:..'•:. ....0:). .. • . :/• . -1 \ 4 MILES N / El 0 Cii . kks. : 11 1 . .. 1 - - 0 LONEXCRES ...... \ t : •Itt"'" ...-- 1 1.. 1 31 • i 1 1 r SOUTHCENTER ,*, •?. 4 () s< 0 .-- •W \‘ /19 I It I• It 0, ' ...- • ' li \' ' • : i to ' Amminummumw. 25(go:;itc*.:;:: . -I;:I I I . 3.?1:;--.::"...:1-•'I 11'!.• ;I AL' .• 1, •,, . `2. A * V - 4 vALLE, o CC !: ... .. GENSF.-•... ''' L- F-• -- - ...„ - i S ISOTH L.; . E c .r .1 st 6- :/ i• - 7 a > > 0 \' 0 • o Zn i 1991 7 Stor Office / fte _ --- , , , \4‘... o With Parkin:Structure 7/41. : ' * I h 1 •A t 4, /,:,.,,, / , a; ... w % , :,• --Thu . .,_ iii,\ HERON EXHIBIT )• 0 CO % \•Il .:t7i;* * •i if. , :;:i • 6 I. i I. . I 3...• ...x. . • 5 (TS < g • •- i i -11/„.• i •- I I .i.v ;.. k`• -1::;•!)1; IH % ' ' .'1 (71 •'' 1 C. Y ti / • f / • I 1 • .- 4 . E-ACIA16.-PEES -2'2''-'27‘1 1-3.4\ \ -.S:•••e.._..,-.-P.) ..-.------ if 03 o_ c" lr IIIIIIIIIIIIIIIiiimmum..... 1 11 \ _ III -.. s. A ..•I 1 0.1.1 .40°. ;:, _,..."' HERON ROOKERY;!.:1........ ,., //:,/ A.• /: :._-....- i 22„ . • ., _ a / s •••'- ‘ k44 1 41? t ....••••.,....„..... -- • ----->":.'• ---"S--- -.• 'i . . I i,\Existing Pilsen III /- — 1!,:,-. ---.—__________j 8 i VI • ::.-1...::.;'.%"=„g, s 1 ''':„.../ - -- -- -- -'_''., 1 i • I . 3 . I : I --- • . , . 1 t, ‘ G• ' t...4-' . i i t is 04) I '--- • ____ -• Ai - .4.4,74. •.„‘A''.5‘ s 4-E FL... ...0.4--/....-.4.-.. , 11... W111111111P5 ,„ .,,,, - ."-)_ -.f... -71:4;*srccod.,..E.Nefx • Pe/C404•PEX:WO.222-• ' • I i ;-lill ilia :4I . 207 ileft: r 7.X....44141k _ " .:ii i. j itt, 1. *-- ‘4.1, 7W "ref, ,.., - - -"' -ew-sc=vau,- • '"/ .. .2. . .1'4 411-.......6. C.- F-7 a...-..=. " 0 i ,a C./ ...•',:' -, . 0 ( i\ 1.11_71 . I ‘tg ;••• . .....,... 9 0 i \‘,.....7.______I____________ _.\..z3 alr Zo _:. 3 'Mr. ...•. . • Ill i 1111 ' /_,-- • .-. ft. .< -./. •,-.........-eai -;,,-c.,.--..,......45-4, 2'. 5-00- / :444.....r...E. ........L.-.4.:•-•••,S teS.... 1. / ,./ •- Arr.'*.-. . -77...,A .„ ',-- / • -.....4 • / , -oak 9 ....\......**....6..........- - ° Cfaie 1- ...„.. 5 / ,- ...0..4E E- .T-0 FJ • V L-AL.A- 1"..., • • /!? ' aN' i"/ • I --',.,.. y l••- _,Ao ,. ' '.-E-..,-.7•6.-m--.G,E- • c••DE tvt.-.C.:- ............ -".0 S..is,... ...,/ • • • `,. t ..,;(1</-'. •ZP'2- /',/• ,..--Z-1...:-.__ . . • ss, .",............ 0''', - ie. 7...../ •',... '''':::.-----5 .,_ .4.6 , • 40' 4.4 ,' i TABULATION ••••••.„ ....••••,-.,...-..... ...-- --,i'..... ' -- . N-..... „...---X .e, 1 • ••••• . .....:-....„ ,' • -.... Site Area . ±683,762S_F:-... ••••••...1-.. - i ,.. .... N..V.5.. "..' / . .4 ...,-.e-..-, I AcAdecueematirreg BLACKRIVER. [771 ....- , , Building Area ±285,000 S.F. ----_ ..'N... ... .......7'..,..7:-I.K....----n, ..,.//// CORPORATE 'PARK ( h _ SITE PLAN Gross Coverage ±41.7% ---... .....,..',.. I 1 .< -r4-4071./ 17:7-. S..-----*. Inn AL X ..:2e A Avg A.GA...•• --.......... I / 0 C.,-.. .- "n'''.. RENTON WASHINGTON s- ...0(..... iz Site Coverage ±17.6 % (includes Garage) ..._ - ...- q•.... -- ....41.30..,.. ...15. 0 ......... I • •._,./. ,7...( ., FIRST CITY DEVELOPMENTS CORP. z , .., ......,E-4,...., Parking ±1,351 STALLS (1/211 S.F.) -----:-- :----...-.7 oct Sd 90 -13d Standard _•`--.. --fc--- , • i r . \ — . . Compact s. , L\ TRACT B , Handicap • ' • • \ -: ALTERNATE SCHEME 0 .. . .. • J06 NO.68041 SW-ET NO OF • .--- Figure 2-6 ALTERNATIVE B2 \-- SEVEN STORY BUILDING WITH, PARKING STRUCTURE. DATE •4,0-E1 DRAWN•6...__ CNECX.••..r..- . ' IIMINI . - - . . . • . •-.- - •••• -......_ • .........._•-....„.... ' ,..7/".........../ /..• Z/. 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' . ,.00..• 1 1 , lo tal'ilY" /. kki:4*-1) War" ' .L.,. . , ;; ..i, iii,41;,.. osliffil /. . 91.00 .I r "" i (§1 /,. / /1 ... fk '," v ; • .. ,,,.. 1 t . ,„,-..-7-1- 1.'ti k-6, ..r.• ,,, ................ • ./' .1 jr... ., i . ''.F . / • O. 1.41,Lt fae-Mir , ' \I r r' • A 4 ,A. P. "...41;' ) l'' 1 Pr .t.". :' ii,i , ,, ,,:,,,,. i. .\.......,. .ill .1. i),,s, .\ci,41 , ........tv., ./..V T t / , iii , • . . • I cri „•.-- ..i..--.-7.9.,. ,, • , A SeVi.ip imaii Woos /4..L.V. e. •*.. t' - 1". \ i/ x.,. ,A.111%, ,..,s.r if- AWN V'../' . . ,./1/ 1 . _wigs", t ��11; "-rev 04. It.-..'ilMili 1 I y ....ey. ../r C�--,., \s +�►�i�„ � , 7' �:' 1 1 *1 as ! V y,T �F • �D I77q) / u •I riqI , .,fli"i7.,'" 4'''''''.T......,..,- ,,,,i,8.1,1 4!1 6piox \°., ` °° dy \�►. ma`s• t Ae/' 147 ' s /: ... r. .i , - '•\\ P :. . ', �-� /.,. l,II." / .. ///Thalle----- Ail".' 1 .1 -------- -.1 • \s• \‘. I• •• lRallhilet i . 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S %% m t- E7 . . .isf j& Pth ?�� r- 1> Z s .Y1 ; s t ! • 8 11First City Developments Corp. �" Y ' nr: � river Corporate Park Black p PHASE VII TRACT B a a 11 • • Renton, Washington 1 CHAPTER 3 l I CHAPTER 3 AFFECTED ENVIRONMENT, SIGNIFICANT IMPACTS AND MITIGATION MEASURES 3.1 Introduction This chapter presents a description of existing conditions,environmental impacts,and mitigation measures associated with proposed development of Tracts A and B of the Blackriver Corporate Park, Renton, Washington. The impact analysis identifies both construction-related and long-term operations. The subject areas were defined from comments received by the City of Renton during the scoping process initiated in November, 1988. During the scoping process,written comments were received from agencies, tribes, organizations, and private citizens. 3.2 Earth Resources 3.2.1 Topography/Soils Affected Environment The topography of the project area (both Tract A and Tract B) is generally flat, varying in elevation from 18 to 22 feet on Tract A and from 6 to 18 feet of Tract B. The steepest slopes on the sites are ditch side-slopes (approximately 6 percent) adjacent to the P-1 Pond. Both sites have been partially filled with soft to stiff clayey silt and silty-sand excavated from the P-1 Pond in 1984. Additional fill was added from construction of Oakesdale Avenue and 7th Street as a part of the Local Improvement District (LID) transportation improvements made during 1987 and 1988. Soils beneath the fill material consists of 13 to 23 feet of loose to medium dense silts and sands with varying amounts of gravel (Earth Consultants 1988). Very dense sands and gravels occur at an average depth of 20 feet below existing grade. The depth to groundwater at the time of geotechnical investigations (June, 1988)was 5 to 10 feet below the surface (Earth Consultants, Inc. 1988). Groundwater levels fluctuate seasonally. According to Earth Consultants, Inc. (1988), the soils, with pile foundations, are capable of supporting the proposed buildings. The Soil Conservation Service (SCS 1973) King County soil survey was prepared prior to the construction of the P-1 Pond and Channel. Prior to the filling activities, Tracts A and B were classified as Puyallup fine sandy loam and Woodinville silt loam. According to SCS definition, under present conditions the site would now be classified as urban land (soil that has been modified by disturbance with additions of fill material). 3-1 . II Soils within the old Black River drainage channel consist of blue silts with organics and underlain with blue sandy gravel. Portions of the old channel are, by definition, wetlands (see Section 3.4.2 for discussion of wetlands). Impacts Grading would be necessary to establish desired elevations for construction and to achieve elevations above the floodplain(15 feet). Few portions of either site are below that elevation. The initial site work will involve site preparation and general earthwork, a preload program, and pile placement. As a part of site preparation and general earthwork, trees and other surface vegetation and organic material will be removed from the site (see Section 3.5.1 Vegetation for a discussion of impacts to vegetation resources). The ground surface will be compacted prior to placement of structural fill, foundations, or slabs. Following rolling, fill will be placed in horizontal lifts. The foundations of the buildings will be developed with spread footings (Tract A single-story building only) or by augercasting concrete piles (piers) to the dense and very dense sands and gravels found at an average of 20 feet below existing grade (Earth Consultants, Inc. 1988). Tract A. Cut and fills would be balanced to the extent possible to minimize the need to import soil to the site. It is possible, however, that up to 10,000 cubic yards (cy) of additional soil may be needed to achieve desired grades (Coppock 1989). Based on the proposed floor elevations of the buildings, elevation changes on the site would be less than five feet. It is anticipated that grading for all three phases would be done in the initial phase of the project (Coppock pers. comm.). To reduce the amount of post-construction settlement under the proposed Phase 1 single-story building, an additional 3 feet of material will be added as preload over the compacted fill. The material will be left in place for approximately ten weeks, at which time it will be removed from the site. A City of Renton Comprehensive Plan (1986) Valley Plan policy for land development states that "the City should encourage development of vacant lands currently filled and zoned for urban uses before allowing significant additional landfill in the Valley." Because Tract A had been previously filled as a part of the construction of the P-1 Pond, the placement of additional fill will not be inconsistent with that policy. Under the No Action Alternative, no filling or grading of the site would occur. Tract B. Similar to Tract A, cuts and fills would be balanced to the extent possible. Due to the elevation of the site, however, it is likely that greater amounts of fill would be needed to raise the grade to desired elevations. Approximately 35,800 yards of fill would be needed under either Alternative B1 or B2 (Coppock 1989). No fill would be placed in the drainage way at the north end of the site or in the remnant Black River channel in the 3-2 I � • east portion of the site. Grading for all three phases would occur during the first phase of the project (Coppock pers. comm.). As with Tract A, portions of Tract B had been previously filled during construction of the P-1 Pond. The addition of additional fill to the site will not be inconsistent with land development policies in the Valley Plan. Under the No Action Alternative, no filling or grading of the site would occur. Mitigation Measures To minimize the impact of grading activities on great blue herons, no grading should be done from February 15 through June 15. 3.2.2. Foundation Affected Environment As mentioned in Section 3.2.1, the project area (both Tracts A and B) are relatively flat sites. These sites typically are underlain by 13 to 23 feet of loose, silty sands, silts and soft to medium stiff clayey silts. Beneath these surficial materials are medium dense to dense and very dense sands and gravels (Earth Consultants 1979). The surficial materials can be expected to compress when loaded and, therefore, a soil preloading program has been recommended(Earth Consultants 1979,Earth Consultants 1988 and Golder 1990). For structures ranging between one and two stories in height, conventional shallow foundations are recommended for building support (Golder & Associates 1990). Because the soils on these sites cannot support typical column and footing loads for buildings over two stories high, pile supported foundations extending to the dense sands and gravels are recommended for these heavier column loads (Earth Consultants 1988; Golder 1990). Appendix D of this EIS includes geotechnical conclusions from Golder & Associates (1990). Impacts The impacts of preloading the site are associated with transporting fill to the site as mentioned in Section 3.2.1, 10,000 and 35,000 cy of material are expected to be imported for grading purposes to Tracts A and B, respectively. The transport of preload material would consist of using material which will later be graded onto the site and possibly using some additional fill material (particularly for Phase 1 construction on Tract A) which will need to be removed before construction begins. No quantities of preload material have yet been calculated. Tract A. The single-story Phase 1 building would be constructed using a conventional shallow foundation for building support. Impacts will be construction-related and of short duration. Construction activities will include trenching for foundation footings, compaction (rolling), forming, and concrete placement. 3-3 Phase 2 and 3 development will involve deep foundation. The impacts of deep foundations depend on the type of piles selected by the engineer. Both driller auger cast-in-place and driven steel piles are considered possible pile types (Earth Consultants 1988 and Golder 1990). Auger cast-in-place piles are usually drilled to between 40 and 60 feet in depth and have a capacity of approximately 50 tons (Golder 1990). This type of pile typically is constructed using a hollow stem auger. Augering will be done using a crane mounted drilling rig. As the hallow-stem auger is drilled, additional sections are added until the proper depth is achieved. While the auger is withdrawn, the concrete is pumped into the hole through the auger. Reinforcing steel is frequently placed in the top of the pile to provide anchorage to the pile cap. No impacts other than noise (see Section 3.6.1) would be anticipated for the use of drilled auger cast-in-place piles. Approximately two to three hours of time will be required to auger and pour each pile. Steel piles are often driven into the ground using a crane-mounted hammer. The piles probably would be 40 to 60 feet deep and yield a capacity of 70 to 100 tons (Golder 1990). During the driving process, the noise level at the pile could reach 110 decibels. This high noise level would last from two to four hours per pile depending on the obstructions encountered (see Section 3.6.1). Fewer steel piles than auger piles would be needed to support a building. Tract B. All buildings proposed for Tract B (both Alternatives B1 and B2) would require deep foundation. Impacts of deep foundation development would be as described for Tract A. Mitigation Measures. Soil conditions on the site are judged to be suitable for building construction, including the use of conventional shallow foundations for one-or two- story structures. Either auger cast-in-place or driven steel piles would be suitable for buildings greater than two stories in height. No mitigation would be required. 3.2.3 Seismic Affected Environment The Puget Sound region is a seismically active area classified as Zone 3 by the Uniform Building Code (UBC). Large magnitude earthquakes affected the region in 1949 and 1965. The 1965 earthquake was a magnitude 6.5 on the Richter scale and registered Level 7 on the Modified Mercalli scale. The regions largest earthquakes have been subcrustal events, ranging in depth from 50 to 70 kilometers (Earth Consultants 1979). F An evaluation of the liquefaction potential of the solid in the vicinity for the project site was performed in 1983 for the expansion of METRO's Renton Treatment Plant. The 3-4 METRO site is located immediately south of Tracts A and B of the Blackriver Corporate Park. It was concluded that the potential for liquefaction at this site is quite low (Converse 1983). The Renton Treatment Plant was designed for a peak ground acceleration of 0.17 g which corresponds to a 70-year recurrence interval of a 50 percent probability of exceedance in 50 years (Converse 1983). Figure 3-1 shows the probability of exceedance of peak ground acceleration. This figure is from the seismic risk analysis performed by URS/Blume for METRO in 1983 (Converse 1983). This acceleration defines the level of shaking for the design of this essential facility. Based on the design acceleration and the type of soil at the treatment plant site, the liquefaction potential was determined to be quite low. The soil in Tracts A and B contains plastic silts and medium dense sands which diminish the potential of liquefaction (Earth Consultants 1988). The peak ground acceleration for design of the new buildings, based on the 1988 UBC, will vary between 0.10 g and 0.21 g depending on the structural framing system used. These design ground acceleration values seen reasonable since the METRO facility, which is considered an essential facility, was designed for a value of 0.17 g. Impacts Tract A and B. The impacts of designing the Tracts A and B structures to resist the peak ground acceleration as defined by the UBC are anticipated to be typical standard practice for buildings of this type. The lateral force resisting system employed in the structure will transfer the loads through the piles into the soil. Battered piles may be necessary to transfer loads for the structures supported on piles. For the structures with spread footings, the passive resistance of the adjacent soil may be sufficient to resist the lateral loads. No calculations have been performed to determine the forces transmitted to the battered piles or into the adjacent soil. Mitigation Measures Design of buildings must follow UBC standards. Calculations should be made to determine the need for battered piles for all pile-supported structures. 3.3 Air 3.3.1 Air Quality Affected Environment This section examines how motor vehicle emissions produced in parking garages affect nearby concentrations of carbon monoxide (CO). The analysis, conducted for garage designs for Alternatives B1 and B2, is limited to CO because CO is the primary pollutant of concern associated with parking garages. 3-5 Probability of Exceedance (X) 99 98 95 90 80 • 70 60 50 40 30 20 10 5 2 1 .5 .2 .1 0.�0 .. 1 I I I 1 I I I I I I I I I I I . �, - 0.40 0.35 --' -:// 0.35 r. vI c 0.30 - 0.30 0 Y . 42 1.,I. • 1 a, u 0.25 - - 0.25 Q Average Time Period, T (years) 100' 50 20 10 5 2 1 n, v� 0.20 ! - 0.20 x b a, 0.15 N - 0.15 0.10 - - 0.10 Note: Insufficient data for PGAs less than 0.l0g 1 t 1 1 1 1 1 1 1 1 I I 1 1 2 ; 5 10 20 30 40 50 60 70 80 90 95 981 99 99.5 99.8 Probability of Nonexceedance (X) source: URS/Blume 1983 Figure 3 - 1 Probability of Exceedance of Peak Ground Acceleration The air quality analysis is organized into two major sections. The affected environment section discusses the existing CO air quality in the project area and the factors contributing to existing CO concentrations. This section also discusses parking garage air quality issues, including air quality standards and criteria applicable to garages.The impacts section describes the results of the air quality modeling conducted for each parking garage alternative. In addition to the air quality analysis covered in this chapter; Appendix E of this EIS contains a discussion of the health effects of CO and the modeling procedure used to estimate CO concentrations. Existing Carbon Monoxide Air Quality. The Washington Department of Ecology (WDOE), the Puget Sound Air Pollution Control Agency (PSAPCA), and the U.S. Environmental Protection Agency (EPA) have each established ambient air quality standards for several different pollutants. Each agency has adopted identical air quality standards for CO. The 1-hour CO standard is 35 parts per million (ppm) and the 8-hour standard is 9 ppm. The PSAPCA is responsible for controlling stationary sources of air pollution in the central Puget Sound region while WDOE is responsible for monitoring CO levels.These two agencies operate 39 gaseous and particulate air monitoring stations in the central Puget Sound region. CO is monitored at 13 separate stations: eight are in Seattle, two are in Tacoma, and one each is in Everett, Bellevue, and Bremerton. None of the 13 CO monitoring stations are close enough to the Tract B study area site to be considered representative of CO concentrations in the project area. Given the current density of land use development and the existing roadway network, existing violations of the CO standard are considered unlikely in the immediate vicinity of the project area. Factors Contributing to Carbon Monoxide Problems. Motor vehicles in King County are the primary source of existing CO emissions. To illustrate, Table 3-1 identifies the source of CO emissions in King County. Over 96 percent of all CO emissions in 1987 were produced by transportation sources. The highest ambient levels of CO occur mainly during autumn and winter months. The highest CO levels are measured in the vicinity of congested motor vehicle traffic present during later afternoon commuting and around shopping centers, particularly during holiday shopping. A contributing factor during some periods when CO levels are high is the existence of stable weather and light wind, which temporarily reduce the dispersion of CO emitted into the air. CO is primarily a winter period pollution problem,with motor vehicles the dominant emission source in most areas. Winter seasonality is the result of two factors: - Vehicle CO emission rates increase at low temperatures; and • Meteorological factors resulting in limited dispersion are more prevalent during the winter than at other times of the year. 3-6 Table 3-1. 1987 Emissions in King County Carbon Monoxide tn/yr percent Point Sources Industrial Boilers 1,473 0.30 Forest Products --- 0.00 Primary Metals 2,092 0.43 Electric Utilities --- 0.00 Chemical Production --- 0.00 Cement Production --- 0.00 Other Point Sources More than 25 tn/yr 215 0.04 Less than 25 tn/yr 392 0.08 Area Sources On-Road Transportation 453,585 92.59 Off-Road Transportation 20,003 4.08 Small Boilers 720 0.15 Slash Burns 1,144 0.23 Residential Heating 4,992 1.02 Other Area Sources 5.260 1.07 TOTAL 489,876 100.00 Note: tn/yr = tons per year 3-7 As a directly emitted pollutant, transport of CO away from the emission source is accompanied by dispersion and reduced pollutant concentrations. Consequently, CO problems are usually localized near a relatively concentrated source of emissions. The conventional expectation is that CO problems will be associated with a combination of high traffic volumes and significant traffic congestion. In recent years, however, it has become apparent that off-street parking facilities can also be an important contributing factor. Several studies suggest that CO problems occur primarily in the vicinity of major traffic arteries having significant amounts of commercial development. The presence of significant commercial development is an important contributing factor for two reasons, 1) parking lots for such developments represent a localized source of emissions that augment the CO emissions from vehicle traffic on adjacent roadways, and 2) vehicles leaving major parking lots are likely to be in a "cold start" operating mode, resulting in higher CO emission rates than is typical for through traffic on major roadways. Meteorological conditions are also a significant factor affecting the development of CO problems. High CO levels develop primarily during winter when periods of light winds or calm conditions combine with the formation of ground level temperature inversions (typically from the evening through early morning period). These conditions result in reduced dispersion of vehicle emissions, allowing CO problems to develop and persist during hours when traffic volumes are declining from peak levels. Motor vehicles also exhibit increased CO emission rates at low air temperatures. The air quality impact analysis presented in this EIS focuses on the potential for CO problems associated with parking garage alternatives associated with Alternatives B1 and B2. The following discussion provides some pertinent background information on CO concentrations reported from inside parking garages and the various air quality codes and standards applicable to parking garages. Carbon Monoxide Concentrations in Parking Garages. Post-construction monitoring surveys provide limited data on CO concentrations inside parking garages. British studies often report carbon monoxide concentrations of 100-500 ppm inside poorly ventilated above- ground parking garages (Barratt 1985). The high concentrations are largely due to the absence of significant emission controls on vehicles sold in Britain. CO concentrations averaging 8.9-34.7 ppm have been reported on different levels in a well-ventilated multilevel underground garage in Toronto;CO readings exceeded 100 ppm in two other underground parking garages (Wright et al. 1975). EPA has reported CO measurements in underground parking garages ranging from 40 ppm to over 100 ppm (U. S. Environmental Protection Agency 1979). Ingalls (1981) reported a CO concentration of 325 ppm inside a poorly ventilated, multilevel underground garage in Los Angeles, CA. A California study (Flachsbart and Ott 1984) provides data on carbon monoxide concentrations inside 10 different parking garages in the business/commercial districts of four different cities. All garages were described as "enclosed" or underground, as opposed to the "semienclosed" garages associated with shopping centers. Mean short-term CO 3-8 concentrations of 25 ppm or more. One garage produced persistent CO concentrations above 9 ppm on the lower 10 floors of an attached 15 story office building. Recent personal exposure monitoring studies have provided additional data on CO values inside parking garages. A summer test of monitoring equipment measured internal parking garage CO concentrations of 27 ppm during the morning commute period and 50 ppm during the afternoon commute period (Ott 1985). CO concentrations averaging 10- 20 ppm were recorded inside parking garages in Washington, DC and Denver, CO (Akland et al. 1985). Additional studies in Washington, DC found 3-minute CO values averaging 20-25 ppm inside two parking garages during morning commute periods (Flachsbart et al. 1987). More variable carbon monoxide measurements (24 ppm at. one garage and 94 ppm at the other) were reported for the afternoon commute period. None of these reports specifies whether above-ground or underground garage levels were being monitored. CO concentrations inside parking garages do not fully identify air quality impacts on the general public. Parking garage users spend little time inside the garage. Garage users and other members of the public will, however, be at locations near the garage for more extended periods. Locations outside an above-ground garage are exposed to a series of overlapping pollutant plumes, each dispersing from a different garage level. The total pollutant concentration at any location is the sum of the incremental contributions from each garage level.Under limited-dispersion meteorological conditions,locations within a few hundred feet of a garage may be exposed to pollutant concentrations greater than those inside any single garage level. Parking Garage Air Quality Standards and Criteria. A variety of codes, standards, and recommended criteria have been adopted by various governmental agencies and professional organizations to address air quality conditions in parking garages. These standards and criteria are discussed below. Building Code Ventilation Requirements. Ventilation requirements for parking garages differ somewhat among the codes used in different parts of the country (Boldon 1985).The codes generally distinguish between open garages and enclosed garages. Open garages are those meeting code requirements for minimum natural ventilation. Enclosed garages require mechanical ventilation. Building code ventilation requirements for open garages are phrased in terms of structural requirements (extent and distribution of open facade areas) rather than as air quality performance criteria. Anticipated vehicle usage patterns are not considered. Thus, there is no simple equivalency between building code ventilation requirements and potential internal carbon monoxide concentrations. Building code requirements for enclosed garages are generally phrased in terms of square air flow (e.g., 1.0 1.5 cubic feet per minute (cfm) per gross foot of parking area). Some codes set CO performance standards (e.g., 50-200 ppm, depending on averaging time). In all cases, however, the codes were originally designed to keep internal CO concentrations in individual garage levels below an 8-hour average of 50-100 ppm. These values correspond to common industrial hygiene criteria (see below). Building codes 3-9 presume that compliance with these ventilation requirements will ensure consistency with these industrial hygiene criteria. ACGIH Threshold Limit Values. The American Conference of Governmental Industrial Hygienists (ACGIH) has established recommended exposure limits for a large number of compounds encountered in industrial settings (ACGIH 1982). Two "threshold limit values" have been adopted for CO: 50 ppm for an 8-hour work day during a 40-hour work week, and 400 ppm for a 15-minute exposure (reached no more than four times a day with at least one hour between exposure periods). ACGIH also recommends a ventilation air flow of 500 cfm per parking space in garages with two enclosed levels. Higher per-space air flows are recommended for garages with more than two enclosed levels (Hama, Fredrick, and Monteith 1961). These air flow recommendations are intended to keep CO levels below 50 ppm as an 8-hour average. OSHA Workplace Standards. The federal Occupational Safety and Health Administration (OSHA) originally adopted the ACGIH recommended threshold (50 ppm over an 8-hour period) as a workplace standard for CO exposure. OSHA standards are based on a combination of health effects data(often presuming a healthy working-age male) and the economic feasibility of compliance over a wide range of industrial settings. Conse- quently, OSHA criteria represent pollutant exposure levels producing "acceptable" health effects in an occupational setting. In January 1989 OSHA adopted a more stringent CO standard: 35 ppm averaged over an 8-hour period, with a maximum short-term limit of 200 ppm. No averaging time is specified for the short-term limit. Federal and State Ambient Air Quality Standards. Federal and state ambient air quality standards are based solely on health effects data. The federal and Washington state CO standards are 9 ppm for an 8-hour exposure period and 35 ppm for a 1-hour exposure. The federal standards adopted by the U. S. Environmental Protection Agency (EPA) are intended to protect sensitive members of the public "with an adequate margin of safety." No consideration is given to the costs of achieving the standards. Consequently, ambient air quality standards are generally much more stringent than OSHA or ACGIH criteria. In addition to establishing a numerical CO concentration limit for specified averaging times,federal and state air quality standards contain a limit on the frequency of exceedance: no more than once per year for any location. It's not enough to meet the standards under "average" conditions; they must be met under all conditions that may occur more than once per year. Applicability of Air Ouality Criteria to Parking Garages. Air quality criteria applicable to parking garages fall into two groups: those that establish legally enforceable requirements and those most appropriately used to judge public health implications regardless of legal enforceability. The legal enforceability issue depends on whether the location of concern is inside or outside the garage. • 3-10 I Two types of criteria have clear legal applicability to parking garages. Local regulations require conformity with building code requirements. In addition, OSHA criteria apply to parking garage attendants. Federal and state ambient air quality standards are designed to protect the health of the general public. "Ambient air", however, represents outdoor conditions. The federal ambient air quality standards represent threshold air quality levels that can trigger the application of federal funding sanctions and stationary source construction bans under provisions of the Clean Air Act. In a legal sense, federal ambient air quality standards do not apply inside a parking garage; high CO levels inside a parking garage cannot be used to establish "nonattainment area" designations or to trigger imposition .of Clean Air Act sanctions. I In the broader context of public health considerations, however, state and federal ambient air quality standards are clearly the appropriate criteria by which to judge potential health effects of CO exposure (see Appendix E). These air quality standards reflect CO exposure levels at which medical effects become detectable in those persons with sensitive physiological conditions. The U.S. Environmental Protection Agency has determined that CO exposures of 50 ppm over 8 hours, 75 ppm over 4 hours, or 125 ppm over 1 hour "would create adverse cardiovascular effects in a large segment of the U. S. population" (U.S. Environmental Protection Agency 1980). Once attention shifts from inside individual parking garage levels to locations outside the garage, federal and state ambient air quality standards assume legal as well as public health significance. Locations outside an above-ground parking garage will be exposed to CO dispersing from each individual garage level. The total exposure at such locations will be the sum (not the average) of the incremental pollutant concentrations contributed by each garage level. Under limited-dispersion meteorological conditions and for locations within a few hundred feet of a garage, this pollutant exposure may exceed the pollutant concentration found inside any individual garage level. Impacts The air quality impacts associated with the proposed project are limited to the potential for localized CO problems. Potential CO concentrations inside and outside each parking garage alternative have been evaluated with a procedure developed by Jones & Stokes Associates' staff (Sculley 1987). The basic components of the analysis are detailed in Appendix E (Figure E-1). Detailed results of the modeling analysis are presented as a series of tables in Appendix E. An overview of the modeling procedures and a graphical summary of the modeling results also are presented in Appendix E. For the following analysis, the background CO levels are assumed to equal 6.0 ppm for the one-hour average and 3.0 ppm for the 8-hour average.Given these background levels and the ambient standards of 35 ppm (1-hour average) and 9 ppm (8-hour average), the maximum allowable CO concentration from either garage cannot exceed 29 ppm 1-hour or 6 ppm 8-hour without a violation of the state and federal ambient standards. 3-11 Table 3-2. Carbon Monoxide Impacts from Renton Garage Alternative B1 with One Exit Lane and 40 Percent Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Garage Level Inside 10 25 75 150 300 500 1000 Level 1 38.2 36.7 34.8 29.5 24.3 17.9 12.8 8.0 Level 2 31.1 26.7 25.4 22.3 18.7 14.0 10.3 6.4 Level 3 5.0 3.4 3.3 3.0 2.7 2.1 1.6 1.0 w .--. Garage 66.7 63.5 54.9 45.7 34.1 24.7 15.4 Background 6.0 6.0 6.0 6.0 6.0 6.0 6.0 TOTAL 72.7 69.5 60.9 51.7 40.1 30.7 21.4 Mean Dispersion Downwind of Garage 8-Hour Average Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Level 1 12.4 11.9 11.3 9.6 7.9 5.8 4.2 2.6 Level 2 8.5 7.3 7.0 6.1 5.1 3.8 2.8 1.8 Level 3 1.4 0.9 0.9 0.8 0.7 0.6 0.4 0.3 Garage 20.1 19.2 16.5 13.7 10.3 7.4 4.6 Background 3.0 3.0 3.0 3.0 3.0 3.0 3.0 TOTAL 23.1 22.2 19.5 16.7 13.2 10.4 7.6 ii Tract A. Air quality analyses were not performed for Tract A since no parking structure is proposed for this portion of the project. Tract B. For Tract B, two parking garage alternatives were analyzed.Alternative B 1, a 3-story, 302,400 square foot parking garage, would service 3 office buildings totaling 286,300 square feet. Alternative B2, a 4-story, 312,000 square foot parking garage, would service one 7-story 285,000 square foot office building. In the analysis that follows, both garages are assumed to be completed by 1993. Alternative B1 would have a capacity of 800 spaces within the garage plus an additional 496 spaces of surface parking. Alternative B2 would also have a capacity of 800 spaces within the garage plus an additional 551 surface spaces. The air quality analysis summarized below and described in Appendix E was conducted only for the parking garage alternatives. Emissions produced by vehicles in the surface parking lots and on nearby roadways are assumed to be accounted for in the background CO concentrations. Because detailed design plans for the parking garages were not available at the time of this analysis, several assumptions were made that are crucial to the impact analysis. For the initial analysis, each parking garage was assumed to have one entrance and one exit lane. Also, the lower levels of each garage were assumed to be 40 percent open to the outside. The top level was assumed to be 100 percent open. Under Alternative B1, the maximum predicted 1-hour CO concentration exceeds the ambient standard (35 ppm) from the garage out beyond 300 feet (see Table 3-2). The maximum 8-hour CO concentration exceeds the ambient standard (9 ppm) from the garage out beyond 500 feet. Each of the three office buildings is within 150 feet of parking garage B1, and thus, the occupants could be exposed to unsafe levels of CO (Appendix E describes how the analysis was performed) given the garage design assumptions. The next step was to repeat the analysis for Alternative B1 under the assumption that the garage would have two exit lanes. This is a key assumption because with only one exit lane, long queues develop during the afternoon rush hour causing high CO emission rates from the numerous cold-start idling vehicles. Table 3-3 shows the CO impacts from Alternative B1 assuming two exit lanes. With two exit lanes, long queues do not develop and the total CO emissions inside the garage are significantly lower. Under the two exit lane scenario, predicted CO levels (including background concentrations) are well below the 1-hour and 8-hour ambient standards. Figures 3-2 and 3-3 illustrate the maximum CO concentrations as a function of distance from Alternative B-1. Figure 3-2 shows concentrations for one exit lane while Figure 3-3 shows concentrations for two exit lanes. Under Alternative B2, the maximum 1-hour and 8-hour CO concentrations exceed the ambient standard from the garage out to beyond 500 feet from the garage (Table 3-4), assuming one exit lane and 40 percent facade covering. However, if two exit lanes.are incorporated into the garage design,.then the predicted maximum CO concentrations drop significantly, as shown in Table'3-5. With two exit lanes,the 1-hour concentrations from the garage, including (6.0 ppm background), are less than the 1-hour ambient standard. 3-12 + I Table 3-3. Carbon Monoxide Impacts from Renton Parking Garage Alternative B1 with Two Exit Lanes and 40 Percent Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Garage Level Inside 10 25 75 150 300 500 1000 Level 1 10.7 10.3 9.7 8.3 6.8 5.0 3.6 2.2 Level 2 7.3 6.3 6.0 5.3 4.4 3.3 2.4 1.5 Level 3 1.2 0.8 0.8 0.7 0.6 0.5 0.4 0.2 w Garage 17.4 16.5 14.2 11.8 8.8 6.4 4.0 Background 6.0 6.0 6.0 6.0 6.0 6.0 6.0 TOTAL 23.4 22.5 20.2 17.8 14.8 12.4 10.0 Mean Dispersion Downwind of Garage 8-Hour Average Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Level 1 3.2 3.1 2.9 2.5 2.1 1.5 1.1 0.7 Level 2 2.2 1.9 1.8 1.6 1.3 1.0 0.7 0.5 Level 3 0.4 0.2 0.2 0.2 0.2 0.2 0.1 0.1 Garage 5.2 5.0 4.3 3.6 2.7 1.9 1.2 Background 3.0 3.0 3.0 3.0 3.0 3.0 3.0 TOTAL 8.2 8.0 7.3 6.6 5.7 4.9 4.2 Figure 3 -2 CARBON MONOXIDE IMPACTS - GARAGE ONLY: AHemdke e1 - 1 bdt Lane 70 I so_ t. g so- A40- z a a . 8 30- X a Z a 1 20 Z a O . O 10- 0 1 1 1 1 1 I 1 1 1 O 0.2 0.4 0.6 0.0 1 0ISTANCE FROM GA1MG (FT) • a PEAK HOUR 4 5-110UR AYE1tAGE Figure 3 -3 CARBON MONOXIDE IMPACTS - GARAGE ONLY: Atlrnd)n 01 v th 2®dL Lan s 1e 17 " 16 ' 1 15- = 14- F 13- I 12- 11 5 10- L1 9 E e- 9 7- a e 1 4- V 3- 2- 1 "-�...r 1 1 1 1 1 1 1 O 0.2 0.4 u�d� 0.6 OA 0<gTANaE PROP 0111MGE(1'f) o PM HOUR 4 6-110U11 Name Table 3-4. Carbon Monoxide Impacts from Renton Garage Alternative B2 with One Exit Lane and 40 Percent Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Garage Level Inside 10 25 75 150 300 500 1000 ' Level 1 43.4 41.7 39.6 33.6 27.6 20.3 14.6 9.1 Level 2 34.7 29.8 28.4 24.9 20.9 15.7 11.5 7.1 Level 3 19.8 13.4 13.1 12.2 10.7 8.5 6.3 4.1 to Level 4 3.2 1.7 1.6 1.5 1.4 1.2 0.9 0.6 LA Garage 86.6 82.7 72.2 60.7 45.7 33.4 20.9 Background 6.0 6.0 6.0 6.0 6.0 6.0 6.0 TOTAL 92.6 88.7 88.2 66.7 51.7 39.4 26.9 8-Hour Average Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Level 1 12.9 12.4 11.8 10.0 8.2 6.0 4.3 2.7 Level 2 10.3 8.9 8.4 7.4 6.2 4.7 3.4 2.1 Level 3 5.9 4.0 3.9 3.6 3.2 2.5 1.9 1.2 Level 4 0.9 0.5 0.5 0.4 0.4 0.4 0.3 0.2 TOTAL 25.7 24.6 21.4 18.0 13.6 9.9 6.2 Table 3-5. Carbon Monoxide Impacts from Renton Parking Garage Alternative B2 with Two Exit Lanes and 40 Percent Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Garage Level Inside 10 25 75 150 300 500 1000 Level 1 10.7 10.3 9.8 8.3 6.8 5.0 3.6 2.2 Level 2 8.6 7.4 7.0 6.2 5.2 3.9 2.8 1.8 Level 3 4.9 3.3 3.2 3.0 2.7 2.1 1.6 1.0 w Level 4 0.8 0.4 0.4 0.4 0.3 0.3 0.2 0.2 a. Garage 21.4 20.4 17.8 15.0 11.3 8.2 5.2 Background 6.0 6.0 6.0 6.0 6.0 6.0 6.0 TOTAL 27.4 26.4 23.8 21.0 17.3 14.2 11.2 8-Hour Average Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Level 1 3.8 3.6 3.4 2.9 2.4 1.8 1.3 0.8 Level 2 3.0 2.6 2.5 2.2 1.8 1.4 1.0 0.6 Level 3 1.7 1.2 1.1 1.1 0.9 0.7 0.6 0.4 Level 4 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Garage 7.5 7.2 6.3 5.3 4.0 2.9 1.8 Background 3.0 3.0 3.0 3.0 3.0 3.0 3.0 TOTAL 10.5 10.2 9.3 8.3 7.0 5.9 4.8 However, the predicted 8-hour concentrations (with 3.0 ppm background) exceed the ambient standard up to and exceeding 75 feet from the garage. As a result, alternative B2 was modeled assuming two exit lanes and 55 percent facade opening. The results, shown in Table 3-6, reveal that predicted concentrations are less than the ambient CO standards at all distances. Figures 3-4, 3-5, and 3-6 illustrate the maximum CO concentrations as a function of distance from Alternative B-2. Figure 3-4 shows concentrations for one exit lane (40 percent facade opening), Figure 3-4 shows concentrations for two exit lanes (40 percent facade opening), and Figure 3-5 concentrations for two exit lanes with 55 percent facade opening. Implementation of either parking garage alternative would result in possible air pollution problems within and possibly beyond Tract B, assuming each garage had one exit lane and a maximum 40 percent net open area on each level except the top. The maximum predicted CO concentrations would expose those working in the associated office buildings to concentrations above the ambient CO standards during periods of adverse meteorological conditions such as low winds and/or inversions. Mitigation Measures No specific design plans have been prepared for the parking garage. Based on the results of the CO modeling, the parking garage for the Proposed Action (B1) should have the following features to insure that CO levels do not reach unsafe levels in the garage: • Lower levels of each garage deck should be a minimum of 40 percent open to the outside (side facing the rookery must be fully enclosed to minimize disturbance to nesting herons); • The top level must be 100 percent open (but with a facade or wall on the rookery side to minimize line-of-sight to the rookery); and • Two exits should be constructed (on the side of the garage opposite the rookery). 3.4 Water 3.4.1 Surface Water Movement/Quantity Affected Environment There are no surface water features within Tract A. During periods of heavy precipitation, water temporarily pond in small depressions which remained following fill placement and site grading. These features are not large enough to be considered significant. The majority of precipitation infiltrates into the fill except along the north edges where some runoff directly enters the P-1 Pond. Runoff from the east edge of the project enters Springbrook Creek (P-1 Channel) which flows into the P-1 Pond. Water from the 3-17 Table 3-6. Carbon Monoxide Impacts From Renton Parking Garage Alternative B1 with Two Exit Lanes and 55 Percent Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Garage Level Inside 10 25 75 150 300 500 1000 Level 1 7.8 7.5 7.1 6.0 5.0 3.7 2.6 1.6 Level 2 6.2 5.4 5.1 4.5 3.8 2.8 2.1 1.3 Level 3 3.6 2.4 2.4 2.2 1.9 1.5 1.1 0.7 w Level 4 0.8 0.4 0.4 0.4 0.3 0.3 0.2 0.2 00 Garage 15.7 15.0 • 13.1 11.0 8.3 6.1 3.8 Background 6.0 6.0 6.0 6.0 6.0 6.0 6.0 TOTAL 21.7 21.0 19.1 17.0 14.3 12.1 9.8 8-Hour Average Carbon Monoxide Increments (ppm) at Various Distances (feet) from the Garage Footprint Level 1 2.8 2.6 2.5 2.1 1.7 1.3 0.9 0.6 Level 2 2.2 1.9 1.8 1.6 1.3 1.0 0.7 0.5 Level 3 1.3 ' 0.8 0.8 0.8 0.7 0.5 0.4 0.3 Level 4 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Garage 5.5 5.3 4.6 3.9 2.9 2.1 1.3 Background 3.0 3.0 3.0 3.0 3.0 3.0 3.0 TOTAL 8.5 8.3 7.6 6.9 5.9 5.1 4.3 Figure 3 -4 CARBON MONOXIDE IMPACTS - GARAGE ONLY: Alt e2 ./1 Ezl lane are 40X Open Alec 90 BO- I O _ 70- tl 60 • 90 40- z 0 a 30 2 O 20- 0 • 10- D O 0.2 0.4 0.6 0.6 1 DISTANCE FROM GA E(FT) O PEAK HOUR 4 e-HOUR AVERAGE Figure 3 -5 CARBON MONOXIDE IMPACTS - GARAGE ONLY: Alt H2./2 Exit Lana and 40X Open Arm 22 21 = 19- a. 1e z 17- O 16- • 14 11- ✓ 13- a 12- ✓ 11 - 10- Si• 9- a e = 7- G 6- 5 6- ✓ 4- 3- 1 ' r r • • • O 0.2 0.4 0.6 0.e .1 Ohouszelds DISTANCE FROM WIMCE(FY) O PfM( NOUR 4 e-HDUR AVERAGE P-1 Pond is pumped to the old Black River channel where it flows into the Green River. No detailed drainage calculations regarding existing site flows have been made, but the estimated flow for a 10-year storm is approximately 3.6 cubic feet per second (cfs) (Table 3-7). Tract B is bordered on the west by Springbrook Creek and on the north by a drainage swale which flows west into the P-1 Pond. Springbrook Creek has been channelized through the section adjacent to the site and has little affect on the surface water hydrology of the site. Along the eastern margin of the site a 660-foot section of the old Black River channel meanders north to the drainage swale which forms the north border of the site. The drainage swale on the north edge of the site flows in a well-vegetated flat- bottomed valley approximately 40 feet in width. As the result of high flows, the actual stream has cut a 2- to 3- foot deep channel into this flat bottom valley. The stream is actively eroding the channel bottom and banks. No flow information is available for the stream, but it is apparent that flows are typical of highly developed areas, rising and falling quickly in response to storm events. Approximately 400 feet of the swale lies within the site and is contained in a drainage easement and a Natural Preserve area under the Proposed Action and alternatives. The majority of flow in the swale is runoff from a large part of urbanized north Renton and is conveyed beneath Naches Avenue in a 60 inch stormdrain to a manhole at the northern terminus of Naches Avenue. A portion of this runoff (about 1 cfs) is then pumped east approximately 800 feet to a fountain where the water is released. A small amount of flow from the urban areas north and east of the project site joins the pumped stormwater at this fountain and travels west in a landscaped swale at the northern terminus of Naches Avenue. Flow is discharged to the swale at the northeast corner of Tract B via a 97 by 67-inch arch culvert under Naches Avenue. Although existing runoff from Tract B has not been calculated, the estimated flow for the 10 year storm is about 3.1 cfs (Table 3-7). The only other surface water feature on Tract B is the remnant Black River channel. This area is a relatively well vegetated emergent wetland (see 3.4.2 Wetlands). Surface water, which results primarily from backwatering within the swale at the north side of the site, is present in the channel only during periods of significant precipitation. The upstream basin which feeds the upper end of the channel has been filled and is very small. Water depths within the channel likely range from zero to about 2 feet. Soils remain saturated for most of the year. Because the historic upstream basin has been filled, the primary hydrologic function of the channel is storage of flood flows which occur within the swale at the north end of the site. Without this storage, downcutting within the swale would be significantly greater than presently occurs. Impacts The primary impacts of the proposed projects would result from the increase in impervious surface and the resulting change in runoff volume and timing. Drainage system design and runoff calculations would be subject to the specifications contained in the Renton 3-19 Table 3-7. Approximate Runoff Volumes from Tracts A and B for a 10-Year Storm, Blackriver Corporate Park, Renton,WA cubic feet per second (cfs) Alternative Existing Future Tract A Phase 1 1.3 5.3 Phase 2 and 3 2.3 9.1 Tract B* -- -- All volumes given in cubic feet per second (cfs). Volumes are approximate and based on the Rational Runoff Method (Bell pers. comm.). * Runoff volumes have not been approximated for Tract B (Bell pers. comm.). 3-20 . I - Storm and Surface Water Drainage Ordinance, (Chapter 29, Sections 4-2901-2918). As part of an agreement relating to land acquisition for the P-1 project, however, on-site detention of runoff from the developed condition is not required for either Tract. On-site project facilities are to be sized to contain the 25 year storm event; the receiving water (P- 1 Pond) will be able to pass the 100 year flow (Price pers. comm.). Tract A. Quantification of runoff impacts have been approximated due to lack of a detailed drainage plan. It can be assumed that runoff from the developed site would be routed through the biofiltration swales to the P-1 Pond. Table 3-7 presents the approximate runoff from a 10 year storm given the proposed site design. Given the large unused volume available in the P-1 Pond, the impact of this volume on the P-1 Pond and downstream facilities would be less than significant. Under No Action (Alternative A2), no change to the hydrology of the area is anticipated. Tract B. Detailed drainage plans have not been prepared for Tract B. Current design calls for runoff to be piped to the east side of the site, routed through biofiltration swales, and then discharged to the Black River channel (Berg pers. comm.). Additional drainage design work, including the capability of the channel at the north end of the site to carry additional flows without erosion, have yet to be completed. Depending on the results of this additional work, other options, such as discharge of runoff from the biofiltration swales directly to the P-i channel may be considered (Berg pers. comm.). Based on runoff coefficients, storm flows from the site would likely triple once the property is developed; Runoff volumes and timing would be similar under Alternatives B1 and B2. Due to the excess capacity of the P-1 channel, significant impacts to the pond from the additional flows are not anticipated. Mitigation Measures Due to the large storage capacity of the P-1 Pond, no mitigation measures are anticipated for Tract A other than the preparation of a drainage plan (as required by the City of Renton) and proper sizing of drainage facilities. Completion of design flow calculations will allow assessment of the need for additional hydrologic mitigation. Mitigation could include improvements to the channel at the north end of Tract B, or routing stormwater to avoid potentially sensitive areas. 3.4.2 Water Quality/Runoff Affected Environment Tract A. Little information is available concerning the water quality of the areas surrounding Tract A. No recent water quality sampling has been done in lower Springbrook Creek or the P-1 Pond. In the period from 1974 to 1976, water quality was tested quarterly in Springbrook Creek and the Black River (Table 3-8). Turbidity, dissolved oxygen levels, and total coliform levels were found to exceed levels set for State Class A waters by the 3-21 Table 3-8. Historic Water Quality Data (Mean Concentrations of Eight Sampling Dates*) for the Black River and Tributaries, Renton,WA Springbrook Creek at Black • Station SR - 167 River Temperature (•C) 9.6 8.5 pH 7.5 7.2 Dissolved Oxygen (mg/1) 11.0 7.7 Turbidity (JTU's) 4.8 22.2 Total Kjeldahl Nitrogen (mg N/1) 0.0260 1.643 Total Phosphorus (mg P/1) 0.094 0.309 Total Coliform (organisms/100 ml) 895 1,171 *Sample Dates: 3/21/74 2/7/75 3/19/76 3/18/77 6/11/74 12/11/75 6/11/76 12/13/74 . Source: City of Renton, 1981 1 , • 3-22 Department of Ecology (City of Renton 1981). Additional sampling took place in October, 1980 when similar pollutant loads were found. Sample results are presented in Table 3-9. Springbrook Creek and the P-1 Pond are still quite turbid, and probably contain typical urban pollutants such as nutrients, particulates, and heavy metals. Runoff from impervious surfaces such as parking lots and erosion from construction are the likely sources of these contaminants. Tract B. Limited historical water quality data is available for the swale (drainage easement) at the north end of Tract B. Sampling results from 1987 testing by Metro of the 60-inch storm outfall from which the majority of the swale's water originates are presented in Table 3-10. Concentrations of coliform bacteria, nitrogen and oil and grease were significantly higher than those in Springbrook Creek for the same sampling period. In order to determine the current water quality within the swale and the effectiveness of the swale at pollutant removal, limited water quality sampling was conducted in the early summer of 1989. Samples were taken from the upstream end of the swale at Naches Avenue and approximately 800 feet downstream where the swale enters the P-1 Pond. Results are presented in Table 3-11. Impacts Water quality impacts from the Proposed Action would include construction and operational impacts. During construction, introduction of sediment to surface waters from erosion would likely be the most significant water quality impact. Following construction, the most significant water quality impact would be the introduction of contaminants associated with runoff from parking areas and landscaping. Tract A. Assessment of construction impacts are difficult without a detailed grading and erosion control plan. In general, it can be anticipated that even with proper erosion control, some sediment will enter lower Springbrook Creek and the P-1 Pond. Depending on the pond volume and pumping schedule, it is possible that some of the suspended material may be pumped to the Green River. Increases in contaminants associated with impervious paved areas would be expected once the building and parking lots are operational. In compliance with Renton policy, biofiltration of runoff through vegetated swales is proposed. Drainage from the west portion of the site (Phase 1, approximately 4.3 acres), will pass through an oil/water separator and then into a vegetated biofiltration swale approximately 200 feet in length. The swale is designed to meet the biofiltration criteria in the new King County Drainage Manual (Bell pers. comm.). These criteria have been developed through cooperative research of the Department of Ecology and other agencies to establish minimum design standards for effective biofiltration. As per these criteria, the swale is designed to treat the two year, 24 hour storm runoff volume (Bell pers. comm.) and can be expected to remove between 50 and 80 percent of the pollutants associated with particulates. The anticipated flow for this storm event is about 1.4 cfs (Bell pers. comm.). Pollutant removal efficiency for larger storms would be significantly reduced as flows increase. No high flow by-pass of the swale is proposed. 3-23 Table 3-9. Water Quality of Springbrook Creek and Black River During October, 1980 City of Renton, WA Storm Sewer Springbrook Outfall Springbrook/ Creek at Near Naches Black River Black River . Grady Way Avenue Fork #3 Near Pump Temperature (°C) 11 14 12 12 pH 7.3 7.1 7.2 7.4 Conductivity (umhos/cm2) 287. 190. 175. 277. . Dissolved Oxygen (mg/I) 7.5 7.2 s 7.2 7.3 Turbidity (NTU's) 16 12 14 17 Settleable Matter (mg/I) <0.1 <0.3 <0.1 <0.1 Total Suspended Solids (mg/1) 9.3 7.0 5.0 9.3 , Ortho Phosphorous (mg/1 as P) 0.17 0.050 0.083 0.14 Total Phosphorus (mg/1 as P) 0.20 0.132 0.089 0.17 Ammonia (mg/1 as N) 0.340 0.223 0.107 0.183 Nitrate+Nitrite (mg/1 as N) 1.39 0.49 038 0.91 Total Kjeldahl Nitrogen (mg/1 as N) 1.55 0.68 <0.50 0.69 1 Biochemical Oxygen Demand (mg/1 as N) 23 4.7 <13 2. 'I Lead (mg/1) 0.008 0.025 0.005 0.006 Cadmium (mg/I) 0.0019 0.0019 <0.0005 0.0007 Zinc (mg/1) 0.134 0.071 0.010 0.083 ryl, Mercury (mg/I) <0.0004 0.0007 0.0003 0.0002 Copper (mg/1) 0.0007 0.013 <0.002 0.006 Chromium (mg/1) 0.022 <0.0015 <0.0063 0.011 Oil and Grease (infrared)(mg/1) 1.66 12.56 <1.79 <1.35 Total Coliform (MPN/100 mis) 5,266 >19,667 >8,850 >8,160 Fecal Coliform (MPN/100 mis) 1,923 >8,880 1,605 254 Sampling Dates: 10/8/80, 10/10/80, 10/13/80 Source: City of Renton 1981 1 1 3-24 Table 3-10. Metro 1987 Water Quality Data for Springbrook Creek Parameter Median Minimum Maximum Dissolved Oxygen (DO) 5.8 3.78 9.87 Temperature 10.8 4.6 17.3 Turbidity 20.0 2.2 31.0 Fecal Coliform* 635 110 3600 *geometric mean Monthly sampling at NE corner of Longacres Source: Metro 1988 3-25 Table 3-11. Results of 1989 Water Quality Sampling of Naches Avenue Drainage Swale, Blackriver Corporate Park, Renton, WA 6/21/89 7/17/89 • Naches Ave. P-1 Pond Naches Ave. P-1 Pond Fecal Coliform Count, MPN per 300 240 >1600 >1600 glass electrode 6.7 6.8 6.9 6.7 100m1spH, at 25°C Parts Per Million (mg/L) Chemical Oxygen Demand 12. <10. 24. 20. Total Suspended Solids 12. <2. 28. 7. Nitrate + Nitrite as N 1.1 0.20 0.21 0.23 Total Kjeldahl Nitrogen 0.6 <0.5 5.3 3.4 Lead <0.01 <0.01 1.1 0.9 Oil & Grease 0.9 0.9 0.13 0.11 Copper 0.004 0.002 <0.01 <0.01 Zinc 0.015 0.016 0.008 0.006 Total Phosphate as P 0.062 0.064 0.051 0.047 Cadmium <0.002 <0.002 <0.002 <0.002 Chromium <0.005 <0.005 <0.005 <0.005 3-26 Runoff from Phases 2 and 3 of the project will also pass through an oil/water separator prior to discharge into a biofiltration swale. This swale will be approximately 350 feet in length and will be designed to similar standards as those proposed for the Phase 1 swale. Tract B. The primary construction-related impacts associated with this Tract would be the import and placement of large amounts of fill. The potential for erosion is greatest along the eastern portion of the site where fill would be placed adjacent to the old Black River channel. Depending on the water level in the old channel and drainage channel to the north, some sediment could be carried to the P-1 Pond. If fill is placed and stabilized during the dry season, the amount of erosion would be less than significant. Following construction, water quality impacts would result primarily from pollutants associated with vehicles and landscaping activities. Although current design plans show no specific areas for biofiltration, runoff would be treated in vegetated swales in compliance with Renton city policies (Berg pers. comm.). Depending on final drainage design, impacts such as increased erosion from higher flows in the channel at the north end of the site could also occur. Mitigation Measures Mitigation of construction related water quality impacts for both Tracts would be in the form of an erosion control plan as required by the City. This plan would likely include the following elements: • Identification of clearing limits; • Installation of silt fences around the perimeter of areas to be cleared; • Installation of a rocked construction entrance; • Excavation of sediment ponds and ditches to carry surface flow to the ponds; • Installation of rock check dams in ditches to slow flow and trap sediments; • Phasing of clearing to minimize the amount of exposed soil; • Immediate seeding or covering of exposed cuts as recommended by the geotechnical engineer; • Mulching of all areas exposed for more than 330 days; and • Weekly maintenance of all ponds, ditches and other erosion control features and more frequent maintenance as required by weather. Mitigation for operational impacts on both Tracts would be the installation of maintenance of oil/water separators and vegetated biofiltration swales. Swales would be designed to meet the standards set forth by the Washington Department of Ecology. These swales are effective for removal of pollutants at flows at or below the two year, 24 hour 3-27 storm. For larger storms, some water quality improvement would be gained from detention in the P-1 Pond. The effectiveness of this detention would depend on pond volumes and pumping schedules. Other than biofiltration, mitigation measures for Tract B have not been specified due to the absence of a detailed drainage plan. Mitigation would likely take the form of proper design to ensure that the additional volumes generated by development would not increase erosion in the channel at the north end of the site. 3.5 Terrestrial Resources 3.5.1 Vegetation Affected Environment Tract A. Tract A is characterized by upland herbaceous species growing on the dredge spoils created from the excavation of the former Black River to create the P-1 Pond. The site is characterized by the presence of a variety of upland species contained in commonly used hydroseeding mixtures. Species such as Timothy, blue grass, bentgrass, fescue,and various clovers are present. Other pioneering species include thistle,blackberry, and Scots broom. No trees remain on this site, scattered red alder, cottonwood, and willow shrubs are becoming established in some areas. There are two very small (less that 30 feet in diameter) depressions which contain standing water on the compacted soils during storm events or winter high precipitation times. These depressions are characterized by the presence of scattered smooth rush, toad rush, dagger leaf rush, velvet grass and one cattail plant. These areas will be discussed further in Section 3.4.2. Tract B. Tract B retains more vegetative diversity: there are mature black 'I cottonwood trees and woods present, an extensive shrub zone characterized primarily of red alder and black cottonwood, and an upland herbaceous area which is the remains of the former golf course on the site. Along the west side of Tract B there is a fringe of young red alder and Oregon ash trees along the upper reach of the east bank of Springbrook Creek. Just to the east of these young trees is a line of recently planted Lombardy popular saplings paralleling the bank of the creek. The northeast corner of Tract B is the most diverse: a mature black cottonwood woods remains in this area, as well as wetlands within the old channel of the Black River. The cottonwood woodland is characterized by the presence of mature trees of approximately 100 to 130 feet in height. The canopy is predominantly cottonwood though scattered red 3-28 alder are also present. The subcanopy is dominated by red elderberry, with a layer of red osier dogwood. The herbaceous layer is dominated by stinging nettle, sword fern, foam- flower, and upland sedge. The overall character of the woods is that of a floodplain forest. The soils in the woodland are upland and are characterized by olive brown silt loams with mottling at about 18 inches. Because of changes in the hydrology of the surroundings this area is no longer subject to flooding or periodic saturation. Within the northeast corner of Tract B are the remains of the Black River channel. The area is characterized by an emergent wetland system which is well established and diversified. This wetland area is discussed in detail in the Wetlands Section. The central portion of Tract B is a mixture of upland grasses and shrubs. The site has been impacted repeatedly in the past. Species such as red alder shrubs and reed canary grass dominate on upland soils. Impacts Tract A. The proposed Alternative Al development on Tract A would result in the permanent conversion of 11.6 acres of grass and shrubland to a developed site of impervious surface and landscaped vegetation. No significant plant species or plant communities occur within this Tract because of past human impacts. The impact to the vegetation resource therefore would not be significant. Under the guidelines set forth in Appendix B, a dense vegetated buffer of native trees and shrubs would be created adjacent to the P-1 Pond and Springbrook Creek on FCDC and City of Renton property. Over time, this vegetated area will provide a vegetation diversity similar to that which historically occurred. This would represent a beneficial impact. Under the Alternative A2 (No Action) existing vegetation would remain and over a long period of time a dense shrub community would likely become established; probably dominated by Scot's broom and red alder. In response to successional patterns it is likely that a deciduous forested system of red alder and black cottonwood would establish over time on a portion of the site, though given the compacted nature of the soils this recolonization may not occur rapidly. Tract B. Under the Proposed Action(B1),phased development of Tract B will result in the loss of 9.3 acres of scrub black cottonwood, alder, Scot's broom and grass vegetation. Because of past disturbance to that portion of the site proposed for development, impacts to vegetation resources will not be significant. Proposed features of the project will be developed to avoid significant vegetation resources of the site, the mature cottonwoods and wetlands. The landscape plan for Alternative B1 shows mature cottonwoods on the south portion of the site preserved within landscaped islands within the surface parking area. Because cottonwoods are shallow rooted, filling or development of impervious surface area should not extend under the dripline of the trees (City of Renton Ordinance No. 4219). 3-29 The Proposed Action would also include the development of dense vegetated buffers of native vegetation adjacent to Springbrook Creek and between proposed surface parking and the great blue heron rookery. The buffer will serve to increase vegetation diversity on the site and will provide a linear swath of undisturbed habitat along the north, west, and east boundaries of the site. This would represent a beneficial impact. Under Alternative B2 (single seven-story building), the impact on vegetative resources would be similar to B1. The area proposed for grading and development of parking and buildings would be identical under the two alternatives. Under Alternative B3 (No Action) existing vegetation would remain and would eventually be replaced by mature cottonwoods and understory over time. Mitigation Measures Mitigation measures for vegetation listed here would also be beneficial to wildlife resources, aesthetics, andprotection of thegreat blue heron. See Sections 3.5.3 Wildlife Resources and 3.5.4 Unique Terrestrial Resources for addition discussion. Mitigation measures include: Tract A and B - FCDC should plant Puget Sound native lowland trees and shrubs as a dense buffer along the edge of the P-1 Pond and Springbrook Creek on property owned by FCDC. Plant species shall include Oregon ash, red alder,cottonwood,willows, Douglas fir,western red cedar,western hemlock, native shrubs, and ferns such as red-osier dogwood, red elderberry, sword fern, snowberry, and vine maple; • FCDC should also cooperate in a shared-cost coordinated planting program with the City of Renton, SCS, and King County Surface Water Management for the portion of the P-1 Pond shoreline along Tracts A and B (e.g., maintenance access road) under the jurisdiction of the City and King County; • Develop detailed planting plan and specifications which mimics native plant community species composition and structure (i.e., spacing and grouping of trees '! and understory shrubs and ferns); and • Insure protection of mature cottonwoods on Tract B that will be isolated in surface parking and adjacent to buildings by avoiding impervious surfaces beneath tree driplines and following requirements of Ordinance No. 4219. 3-30 3.5.2 Wetlands Affected Environment Within Tract A there are no wetlands of significance. There are two small closed depression areas within the surface of the compacted dredge spoils. These two areas are less than thirty feet in diameter, and are clearly the result of settling within the dredge spoils. Water from precipitation collects in these holes; it cannot infiltrate into the compacted soil, therefore it evaporates leaving a characteristic cracked brittle soil surface. The sparse vegetation within these two depressions consists of a wide variety of various rushes, several wetland grass species such as velvet grass and bentgrass, and one cattail. The areas are technically wetland based on the assumption of an aquic soil (soil which may be upland soil but is covered by standing water for at least one week of the growing season) and the presence of hydrophytic vegetation. These areas provide very restricted, in any, wetland functions. No water quality improvement, biofiltration, or recharge occurs. Storage function is minimal due to their small size and no significant contributing "basin." Habitat value is limited due to their minute size and paucity of vegetation. Within Tract B the remains of the Black River channel contain a well established palestrine emergent and shrub wetland. The shrub component of the wetland is characterized by willow, red alder, Oregon ash, red osier dogwood, and red elderberry in dense tangles along the former river banks and extending down into the channel bottoms in several locations. The vegetation within the emergent area is a mosaic of dense stands of both narrow- leaved and broad-leaved cattail, purple loosestrife, smooth rush, and small-fruited bulrush. This dense, tall growth is in contrast to open stands of smartweed most often found within the deepest part of the old channel. Although the wetland area surface was dry at the time of the field visit in mid-June, it appears as if the vegetation is vigorous and stable. Soils within the area are characterized by 2 to 5 feet of a very soft grayish blue organic silt underlain by a heavily mottled sand and silt. The soft soils are deepest in the center and northern portion of the wetland and are thinnest near the upland edge. In the southern portion of the wetland, significant amounts of plant material can be found in the upper horizon. Soils were saturated just below the surface at the time of the wetland evaluation in June. The channel likely contains standing water during the winter months, and may collect some runoff during storm events during the remainder of the year as well. It does not appear as if there is a remaining significant contributing basin to provide a continuous water source all year. The channel area drains to the north towards the excavated channel which enters the property from the east and flows to the Forebay Pond to the west. 3-31 The wetlands are approximately 1.1 acres in size. The diversity of vegetation types and structure provides excellent habitat for passerines and prey species. It is likely that predators use these wetland areas as hunting locations. Some waterfowl use may be provided in the winter months if standing water is present. Biofiltration is provided through the dense mat of smartweed. Stormwater storage is limited due to limited basin input. Overall these small wetlands provide substantial functions and values, especially for wildlife as the sunken channels surrounded by dense blackberry are well protected by human intrusion. _ Impacts Tract A. Development of Alternative Al would eliminate the two small depressional areas. Because the depressions provide no significant function or values in context of the larger wetlands within the immediate vicinity, the loss of these two depressions would be of no significance. The No Action Alternative (A2) would leave these areas as is, it is assumed that vegetation composition would change very slowly over time: perhaps a greater density of rushes would occur, and perhaps wetland pioneering shrubs such as hardhack would become established. Tract B. Under Alternatives B1 and B2, the small 0.04 acre wetland would be filled for office buildings and parking areas. No fill would be placed in the Black River channel wetland under any of the Alternatives. Under Alternative B1, no buffer is proposed between the Phase 1 four-story office building and the south end of the wetland. Shading from the building could result in a change to the species found in the wetland. Under Phase 2, a parking lot would be constructed immediately adjacent to the west edge of the wetland. Alternative B2 would place parking lots immediately adjacent to the south and west edge of the wetland. Lack of a buffer would encourage human intrusion and deposition of trash in the wetland. It has not been determined where treated stormwater runoff would be released. If treated stormwater was released into the Black River wetland, it is likely that water would pond more frequently and to greater depths than that which occur now. This is particularly true of the south portion of the wetland, where water would pond to about 18 inches prior reaching the invert of the culvert which would pass flow to the north towards the P-1 channel. Over time, this ponding in the south half of the wetland would alter the species composition within the wetland. If all stormwater were discharged to the P-1 channel, the southern portion of the Black River wetland would slowly dry, allowing upland species to become established. The northern portion would likely remain wet from back flooding of the channel at the north end of the site. Mitigation Measures No mitigation measures are needed for the development of the two depressions located on Tract A and the small 0.04 acre wetland located on Tract B. 3-32 Mitigation measures to reduce the impact of Alternatives B1 and B2 on wetland resources include: • Establish a 25-foot wide no-build buffer zone from the edge of the wetland in the old Black River channel; - Develop a detailed planting plan to revegetate those portions of the buffer zone adversely affected by past construction activities on the site; • • The planting plan should include use of native lowland trees and shrubs previously defined in mitigation measures.under Section 3.5.1 Vegetation; and • • Develop a drainage plan which would incorporate use of biofiltration swales followed by discharge of stormwater into the south end of the Black River wetland. This use of stormwater would provide additional water to the wetland to insure maintenance of emergent vegetation. The following discussion describes the existing wildlife resources on Tracts A and B and nearby the P-1 Pond. A more detailed discussion of the great blue heron, a unique wildlife species found on the sites, appears in Section 3.5.4. 3.5.3 Wildlife Resources Affected Environment Much of the study area (both Tracts A and B) have been substantially altered by past land use activities. In 1984, material dredged from the P-1 Pond by the SCS was deposited on Tract A and portions of Tract B. Wildlife resources of the area prior to that time, were described in the Earlington Park and Blackriver Office Park Draft EISs (City of Renton 1980, 1981). Since 1980, wildlife values have changed as a result of construction of the P- 1 Pond, clearing of a portion of the cottonwood riparian forest north of the P-1 Pond, establishment of a great blue heron rookery in the area (see Section 3.5.4 for a detailed description of great blue heron use of the area) filling of portions of the site and surrounding area, and the overall increase in development and human use in the general area. A majority of Tract A is vegetated with upland grasses. A row of poplars have been planted along the edge of the P-1 Pond and Springbrook Creek, and scattered shrubs occur in isolated patches on the site. The greatest wildlife use on Tract A occurs at the edge of the upland grass of the filled area and the P-1 Pond. The edge (ecotone) of vegetative types typically supports a wide variety of plant species which in turn supports a wide diversity of wildlife species. Given the open grassland habitat of the site, wildlife most likely to utilize the site include avifauna such as California quail,ringnecked pheasant,mourning dove, red- tailed hawk, American kestrel, common flicker, starlings, tree and barn swallows, robins, white-crowned sparrows, song sparrows and crows. Waterfowl such as mallards and cinnamon teal may nest, feed and loaf along the edges of the P-1 Pond, and great blue 3-33 , 1 herons (both adults and fledged young)use the pond for loafing and hunting when wintering waterfowl are present, the water level in the P-1 Pond is high and wetlands north of the heron rookery are flooded. Mammalian and amphibian use on Tract A appears limited by the lack of vegetative structure and diversity. Tract B supports more diverse wildlife habitat than does Tract A because of the greater vegetative diversity. While much of the western and southern portion of Tract B has been filled and regraded and now supports grass and scattered shrubs, a large portion of the site supports cottonwood, alder and Oregon ash vegetation. In addition to the species previously mentioned under Tract A,Tract B also supports birds,mammals, amphibians and reptiles more characteristic of forest and transition communities. Examples include ruffed grouse, band-tailed pigeon, Lewis woodpecker, Steller's jay, black-capped chickadee,winter wren, warblers, nuthatch and bushtits. Habitat for mammals and amphibians and reptiles is also greater than on Tract A because of the presence of riparian vegetation and wetlands along the old Black River channel and drainage ditch on the north and east sides of the site. Impacts Tract A. Development of Tract A under the Proposed Action (Alternative Al),will result in the phased permanent conversion of a majority (11.6 acres) of the site 12.7 acre site from grass and scattered shrubs to impervious surface (asphalt, concrete, and steel). Remaining undeveloped area would be a buffer zone along the edge of the P-1 Pond and , Springbrook Creek, a portion of which is City of Renton property. Although the Tract A buildings are to be constructed over a three or four year period, all site grading will be accomplished in the initial phase (1990) which will eliminate grass and shrub habitat at all three building sites. The loss of grassland habitat will impact the wildlife species presently using the site. The population numbers and diversity of species will decrease as a result of the reduction in acres of habitat. Populations of those species with home ranges lying within the area proposed for development (e.g., voles, mice) will be eliminated. Mobile species such as birds and larger mammals will continue to utilize remaining adjacent habitat in lower numbers than occurred prior to project development. Development of the site will result in a change in wildlife species composition from natural to more "urban." For example, a portion of the waterfowl population using the P-1 Pond (e.g., Canada geese, mallards) will become more domesticated, and many of the other bird species typically found in and adaptable to urban settings (e.g., crows, house sparrows, starlings, rock doves, !, etc.) will become common. Habitat along the shoreline of the P-1 Pond and Springbrook Creek will continue to be used, however, it is unlikely that the area would be sufficient to support species having large home ranges. Few mammals, other than mice, voles, and adaptable predators such as raccoons, striped skunks, and opossum will be sustained. The buffer zone should effectively maintain existing wildlife use within that strip. Waterfowl nesting may be reduced with the reduction or loss of grass areas up-slope of the ponds and with the increased disturbance adjacent to the buffer area. Approximately 11.6 acres of foraging habitat for birds of prey (American kestrel, red-tailed hawk, great-horned owl), will be eliminated and remaining habitat immediately adjacent to the project site will be of reduced value to predators. The proposed three-phase project has been designed following guidelines set forth in Appendix B of this EIS. These guidelines were designed to reduce the impact of the 3-34 project on the great blue heron rookery and use of the P-i Pond and adjacent riparian forest by other wildlife species. Under No Action, existing wildlife use of the site would continue. Tract B. Under the Proposed Action (Alternative B1), approximately 10.8 acres of the 15.7-acre site (69 percent of the total area) would be developed as building or parking area. Approximately 4.9 acres would remain undeveloped, as drainage easement, buffer area adjacent to Springbrook Creek and the P-i Pond, and for protection of wetlands in the old Black River channel and great blue heron flight zone. Wildlife habitat loss would include grassland, shrub, small areas of cottonwood/alder (see Sections 3.5.1 and 3.5.2 for a description of impacts to vegetation and wetland resources). Under the Proposed.Action, groves of large-diameter cottonwoods adjacent to the Black River channel and near the south portion of the site will be preserved and incorporated into the landscaping of the site. As with the Tract A, the Proposed Action (Alternative B1) for Tract B and Alternative B2 (single seven-story office building), were designed using heron protection guidelines set forth in Appendix B of this EIS and guidance from an environmental constraints analysis conducted during 1989 by Jones & Stokes Associates. The guidelines and constrains analysis were developed to minimize impacts to wildlife and other natural resources on the site, specifically wetlands, significant cottonwood trees, great blue heron and other wildlife use of the P-1 Pond and adjacent areas. Because a significant portion of the site would be developed under the Proposed Action,wildlife habitat values would be low with the exception of the remaining undisturbed habitat in the old Black River channel, along the northern boundary of the site and along Springbrook Creek. Impacts to wildlife resources will be similar to those previously described for Tract A. Wildlife values in the old Black River channel and drainage easement along the northern boundary of the site will remain high since existing vegetation will be maintained and a portion of the site lies adjacent to the heron rookery and undeveloped cottonwood forest along the P-1 Pond (see Section 3.5.4 for a discussion of the great blue heron). The height of the proposed building on Tract B will be 57 feet for the 1990 Phase 1 four-story building, 45 feet for the 1991 Phase 2 three-story building and 90 feet for the 1992 - 1993 seven-story building. The height the buildings will be above the height of a majority of the trees occurring on the site and in the buffer zone along the P-1 Pond. At approximately 100 feet in height the seven-story building will represent a dominant structure on the site. The height, combined with the proposed reflective glass on the south-facing side of the building, would increase the risk of songbirds colliding with the building. Songbirds are most susceptible to collisions during the spring and fall migration periods and when visibility is reduced by poor weather conditions (e.g., fog or rainy weather) and at night (U.S. Fish and Wildlife Service 1950). Under Alternative B2 (single seven-story building), approximately 10.7 acres (69 percent) of the site will be developed for building or parking (see Tables 2-1 and 2-2 and Figure 2-6), an area of impact equal to that of the Proposed Action. As with alternative B1, wildlife habitat will be lost and wildlife populations reduced. The area to be impacted by 3-35 building and parking is primarily grass and shrub (Scot's broom, scrub alder and small cottonwoods) vegetation. Excluded from development under B2 will be the buffer zone between the parking structure and the heron rookery (see Section 3.5.4 and Appendix A for a description of the buffer zone), the historic Black River channel (which by definition is a wetland), mature cottonwood trees located on the north and south portions of the site, and a wetland setback zone 25 feet in width from the historic Black River channel (Figures 2-5 and 2-6). Under this alternative, as with the Proposed Action, a large contiguous area of wildlife habitat will be maintained along the Black River channel and the northern boundary of the site. Under the No Action Alternative, no wildlife habitat would be lost. With no development,vegetation on the site would revert to cottonwood and alder forest and wildlife use would change with the change in vegetation. Mitigation Measures Tract A. Under Alternative Al (Proposed Action), mitigation measures that would minimize the adverse impact on wildlife resources of the site include: • Maintenance and planting (as a cooperative program with the City of Renton) of a linear buffer of native vegetation (as previously defined under Mitigation Measures in Section 3.5.1 Vegetation) along the edge of the P-1 Pond and Springbrook Creek. The linear buffer will provide edge (ecotone) of habitat between the open water of the Pond and the developed uplands; and • Construct all buildings in earth or natural tones with non-reflective coated or tinted glass and hoods on windows (Phases 2 and 3 only) facing the P-i Pond and heron rookery. Tract B. Under the Proposed Action (Alternative B1), FCDC would construct three buildings with surface parking. Alternative B2 would include construction of a single seven- story office building with a parking garage. Both Alternative B1 and B2 were developed using guidelines and constraints analysis to, among other things, minimize the impact of development on wildlife resources and to make the alternatives less intrusive. The Alternative B1 and B2 site plans included protection of the Black River channel wetland,maintenance and additional planting of a vegetated buffer zone along the north and west end portions of the east boundaries of the site, and maintenance of large cottonwoods on the site. Mitigation measures to further minimize impacts on wildlife resources of the site include: • Plant additional native trees and shrubs in the buffer along Springbrook Creek and between the buildings, parking garage and the heron rookery; and 3-36 • Construct all buildings in earth or natural tones with non-reflective coated or tinted glass and window hoods on windows of all buildings (Phases 1, 2, and 3) facing the heron rookery and Springbrook Creek. The mitigation measures will be effective in maintaining native cottonwoods on the site, providing a buffer zone to the P-1 Pond and Springbrook Creek and a block of contiguous undisturbed habitat on the northern portion of Tract B adjacent to the P-1 Pond and heron rookery. Even with mitigation measures, 11.6 acres of wildlife habitat on Tract A and 10.8 acres of habitat on Tract B will be permanently lost. 3.5.4 Unique Terrestrial Resources Affected Environment Neither Tracts A or B are considered important habitat for listed endangered or. threatened species. The site does lie within the range of the bald eagle, and an immature eagle was observed soaring over the site in the spring of 1987, however, no nesting or feeding activity has ever been recorded (Van Wormer pers. comm.). The WDW/Nongame Wildlife Program has identified the Black River riparian forest as supporting a great blue heron colony (Penland, pers. comm.; McAllister pers. comm.). A detailed analysis of life requirements and management guidelines is presented in Appendix B of this EIS. This heron rookery was believed to have been established several years prior to the construction of the P-1 Pond in 1984 (City of Renton 1987). Great blue herons are considered as a proposed monitor species by WDW and as a protected species (McAllister, pers. comm.; RCW 77.16.120). A monitor species is a species having 1) significant popular appeal; 2) requires limited habitat during some portion of its life cycle; 3) is an indicator of environmental quality; requires further field investigation to determine population status; or 5)was justifiably removed from the endangered,threatened or sensitive classification. Great blue herons nest adjacent to the project sites and feed and loaf along the shallow edges of the P-1 Pond. A majority of the use occurs from late February through August; more limited use is made of the P-1 Pond and nest trees at other times of the year. Based on field observations and information on the life history of the great blue heron, the upland grass and shrub/scrub vegetation on Tracts A and B do not constitute important heron habitat. Herons are known to use upland wet pasture areas (such as those found in the Green River Valley) for feeding(feeding on Microtus and amphibians) at certain times of the year, particularly during winter months when feeding in many intertidal areas of Puget Sound is limited by high tides during the daylight hours. 3-37 The great blue heron rookery, known locally as the Black River heron rookery, is located in cottonwood trees on an island formed when the P-1 Pond were constructed from March to August, 1984. The rookery is located approximately 350 feet from the northern boundary of Tract B and 500 feet from the northeastern boundary of Tract A. Based on field observations by Rex Van Wormer, wildlife biologist, during the 1989 nesting season, 25 nest structures were located in three 48-to 54-inch diameter, 140- to 150- foot tall black cottonwood trees. During field surveys conducted by Van Wormer on June 10, 1989, 17 of the nests were observed to be occupied and 8 nests unoccupied. During field surveys conducted in April, 1989,Van Wormer observed 23 occupied nests, 6 more occupied nests than were observed during the June survey. The age of the nesting rookery is not well known, however, there is evidence that approximately three nest structures were present at the time of construction of the P-1 Pond in 1984 (Van Wormer 1988). Little nesting information is available prior to 1986. Since 1984, the Black River rookery has been subjected to a variety of disturbances and intrusions. Historical accounts of the rookery prior to 1986 are sketchy, however, Allmendinger(City of Renton 1987)reported seeing nesting herons prior to the construction of the P-1 Pond and forebay. According to Van Wormer (1988), excavation of the P-1 Pond (including creation of the island supporting the rookery) was carried out from April to September, 1984. Based on review of aerial photographs of the P-1 Pond and heron rookery, draglines and other heavy construction equipment were likely used within 50 to 100 feet of the rookery. During 1987, a large portion of the riparian forest lying approximately 800 feet north of Tract .B and between the Burlington Northern Railroad tracks and the P-1 Pond was cleared and partially filled. Logging activity took place from February to mid-March,within 200 feet of the rookery and during a time of nest selection, nest building and pairing. According to Van Wormer (1988), at that time the rookery contained eight nest structures. Since 1987, various degrees of disturbance,to the rookery have occurred as a result of construction at the Metro wastewater treatment site (1,500 feet from the rookery), on Oakesdale Avenue (1,100 feet from the rookery), continued routine activities on the Burlington Northern railroad tracks (1,000 feet from the rookery), at the Black River quarry (2,400 feet from the rookery), and on property adjacent to Naches Avenue S.W.(1,000 feet from the rookery). Appendix B of this EIS presents a comprehensive description of the life history and analysis of effects of human disturbance on great blue heron rookeries. Please refer to that appendix for additional information. Impacts , The impacts of the Proposed.Actions (Al and B1) and Alternatives (B2) on great blue herons and the nesting rookery, were based on information from studies conducted at other great blue heron rookeries in the Pacific Northwest and other parts of the United States and Canada. 3-38 - During 1989,the consultant conducted a constraints analysis for Tracts A and B. The purpose of the analysis was to identify building siting factors such as distance to the heron rookery, site topography, vegetative cover (or lack of), shoreline designations, and heron ingress and egress routes to the rookery. This information was used by FCDC to develop project alternatives designed to minimize the impacts on the great blue heron. Limited information is available from the literature and other heron rookery sites regarding the tolerance of herons to building construction in close proximity to rookeries. Research has shown herons nesting in urban settings to be, in many cases, tolerant of noise and human activities close to nests (Peasley Canyon Rookery, Auburn, WA; Spencer Property, Redmond, WA; Yarrow Bay, Kirkland, WA; Ross Island, Portland, OR; Pigeon Point, Seattle, WA; West Delta Park, OR, and Garabaldi, OR; see Appendix A for detailed discussion). In several cases, heron rookeries have been established within 100 feet of buildings, parking lots and railroad tracks (Appendix B). Herons have been found nesting closest to human use areas at rookery sites where dense vegetation screens the rookeries from human activity (Vancouver, B.C.; Spencer property, Redmond, WA). Tract A. The Proposed Action for Tract A(Alternative Al)was developed by FCDC based on rookery protection guidelines developed by the consultant as a part of environmental constraints analysis. Guidelines for siting of the buildings on Tract A were developed from the aforementioned constraints analysis, the results of past rookery studies conducted in the Pacific Northwest and other areas of the United States, field observations by JSA biologists and taking into consideration management recommendations set forth by resource agencies and biologists (WDW 1988; USFWS 1987; Parker 1980). Guidelines specific to Tract A are as follows: - Establish a no-build zone for that portion of Tract A lying within 600 feet of the nearest rookery tree; • Prior to the construction of buildings, plant trees and dense vegetation at the northernmost portion of the site within no-build zone 600 feet from the nearest rookery tree; • Construct project in phases, with first phase of development furthest from the rookery; • After coniferous vegetation in the buffer zone has achieved a minimum height of 20 feet, begin construction of the Phase 2 and 3 buildings. Buildings should not exceed four stories in height (unless building is set back 1,000 feet or greater distance from the rookery); Create dense vegetated no-build buffer along the eastern boundary of the site adjacent to Springbrook Creek to provide a vegetated ingress and egress route for herons leaving and returning to the rookery; 3-39 Ir 1 • Construct the buildingin earth and natural tones; glass facingthe rookeryshould be nonreflective, coated or tinted glass, and hooded to minimize disturbance to the birds; • Human access to the P-1 Pond should be excluded during the period from February 15 to June 15; and • No exterior construction activities should occur within 600 feet of the rookery during the period from February 15 to June 15. Impacts to heron habitat will be minor because the grass and shrub vegetation on Tract A is not considered heron feeding, loafing or nesting habitat. Heron feeding and loafing is done on the margins of the P-1 Pond and Springbrook Creek, an area to be buffered by vegetation from the proposed project. Under No Action (Alternative A2), there will be no impact to great blue herons. Tract B. As with Tract A, the site plans for Tract B Proposed Action (Alternative B1) and alternatives (B2), were developed by FCDC using the site constraints analysis and heron protection guidelines. Guidelines developed specifically for Tract B include: • Plant trees and dense vegetation at the northernmost portion of the site back 400 feet from the nearest rookery tree; • Any buildings located 400 to 600 feet from the rookery should not exceed four stories in height, with taller buildings only beyond 600 feet; • Create dense vegetated buffer along the western boundary of the site to provide a vegetated heron flight zone along Springbrook Creek; • Construct project in phases, with first phase of development furthest from the rookery; • After coniferous vegetation in buffer zone has achieved a minimum height of 20- feet, begin construction of remaining phases; • Maintain mature cottonwoods, specifically along the historic Black River channel, at the northern portion of the site, and on other portions of the site supporting mature trees (e.g., near the south portion of the site); • Densely landscape surface parking to minimize the visual impact on great blue herons; • Buildings should be constructed in earth or natural tones, and glass facing the ' rookery should be nonreflective coated or tinted glass, and hooded to minimize disturbance; • No exterior construction activities should occur within 600 feet of the rookery during the period from February 15 to June 15; and 3-40 • Exclude human access to the P-1 Pond during the period from February 15 to June 15. Using the constraints analysis and the heron protection guidelines, portions of Tract B were excluded from development. These areas included wetlands within the old Black River channel; mature cottonwood trees located at the north end of the site, along the old Black River channel, and a scattered locations on the south end of the site; heron flight zones located on the east and west sides of the site, and a no-build setback zone 400 feet from the rookery. (See Figure 2-i for a description of the set-back zones.) Under Alternative B1 (Proposed Action), three office buildings and a three-story parking garage would be constructed on a phased schedule extending from 1990 through 1993. As proposed, Phase 1 (1990) construction would consist of grading that portion of the entire site proposed for future development,constructing surface parking along the southern portion of the site, and constructing a four-story building approximately 930 feet southeast of the heron rookery. So long as the heron protection guidelines are adhered to, and because the proposed structure and parking would be located nearly 1,000 feet from the rookery, no significant impact to herons resulting from Phase 1 construction is anticipated. Under Phase 2, a three-story building and additional surface parking will be constructed during 1991. Since all grading would have been done under the first phase, no construction would occur within 650 feet of the rookery. Under this phase of development, surface parking will be constructed to within 650 feet of the rookery, while the three-story building will be built approximately 1,000 feet south of the rookery. Under Phase 2, no adverse impacts to heron use are anticipated. Under Phase 3, a seven-story office building, a three-story parking garage, and adjacent surface parking will be constructed during 1992 and 1993. The parking garage will be constructed to within 600 feet of the heron rookery, the seven-story building will be located approximately 700 feet south of the rookery, and surface parking to within 400 feet of the rookery. To minimize the impact of the parking structure on heron use of the rookery, the side of the parking structure facing north toward the heron rookery will have no windows or vehicular access or egress. The concrete wall will be heavily vegetated with climbing vines or evergreen trees. All vehicles will enter and exit from the south side of the structure, thereby screening the heron rookery from a substantial portion of the vehicular movement to be generated on the site. Impacts to heron habitat will be minor because the grass and shrub/scrub vegetation on Tract B is not considered heron feeding, loafing or nesting habitat. Heron feeding and loafing is done on the margins of the P-1 Pond and Springbrook Creek and further south in the Green River Valley. Some surface parking will be constructed between the parking garage and the 400- foot setback zone from the rookery. Fast growing deciduous and evergreen trees and shrubs will be planted to provide additional visual buffering. The intermittent use of the parking lot should not adversely affect herons. Viable heron rookeries exist in close proximity to parking lots at the Peasley Canyon rookery near Auburn, Washington, and adjacent to the Delta River Inn in Vancouver, B.C. where herons nest in a row of evergreens located between a freeway and the hotel parking lot. 3-41 The Phase 3 seven-story building is proposed to be constructed approximately 700 feet south of the heron rookery and immediately adjacent to the no-build heron flight zone along Springbrook Creek. The building will be approximately 90 feet tall, taller than the adjacent vegetation but below the height of the heron rookery trees. Evidence suggests that height of the rookery trees in relation to surrounding land uses and activities is important. Although other viable heron rookeries in Oregon and Washington occur in close proximity to buildings, none of the structures are as tall as the proposed Phase 3 building. In all rookeries field-examined and researched for this EIS, great blue herons either nested in the tallest trees or at a prominent location such as a steep hillside. This preference for high nesting sites may be for ease of ingress and egress to the rookery and for nest defense and security. The close proximity and height of the Phase 3 seven-story building to the heron flight zone may cause herons leaving and entering the rookery to use other routes, or to fly along the westernmost edge of the flight zone adjacent to Tract A. This avoidance is more likely to occur during construction of the building when noise and movement of construction personnel and vehicles is most significant. The long-term impacts of the height and location of the seven-story building on heron use of the site is uncertain. None of the heron rookery case histories evaluated included buildings of the height proposed. Evidence suggests that, with time, herons become accustomed to changes in uses and activities adjacent to feeding and nesting areas. Review of the case histories in Oregon, Washington, and British Columbia showed herons nesting in close proximity to a variety of intrusive activities such as gravel extraction, apartments/condominiums, freeways, parking lots, and single-family developments (see Appendix B for discussion of case histories). On the other hand, the maximum extent to which herons can tolerate disturbance and habitat changes is unknown. As with the Proposed Action, the site plan for Alternative B2 was developed using the siting constraints analysis and guidelines for building location. Under Alternative B2, all site construction (surface parking, four-story parking garage, and a single seven-story office building) would be carried out during 1991. As with the Proposed Action, the Alternative B2 parking garage would be constructed with no windows, entrances or exits facing the heron rookery. The garage would, however,be located approximately 100 feet closer to the heron rookery (approximately 500 feet distance) and would be one story taller than the parking garage proposed under the Proposed Action. The single seven-story Alternative B2 building would be located approximately 725 feet south of the heron rookery. A portion of the building would be screened from the rookery by the parking structure (that portion below four stories in height and directly abutting the parking structure). As with the Proposed Action, extensive landscaping will be provided along the north side of the parking structure to minimize the visual impact from the rookery. The seven-story building would be located approximately 60 feet east of the heron flight zone adjacent to Springbrook Creek. As with Alternative B1, Alternative B2 could potentially cause herons leaving and entering the rookery to use other routes. Given the height of the building, the long term impacts on heron use is unknown. 3-42 Mitigation Measures Mitigation for Tract A and B proposed actions can be accomplished through the use of heron protection guidelines set forth in the Impacts Sections. Additional mitigation could include the following: - Shifting the Alternative B1 (Proposed Action) Phase 3, seven-story building further to the slightly east and south to minimize potential impact to great blue heron; or • Shifting density (i.e., building height) from Tract B to Phase 1 of Tract A to reduce the height of the Phase 3 building. 3.6 Environmental Health 3.6.1 Noise Affected Environment A description of ambient noise levels on Tract B and adjacent areas was presented = . in the Earlington Park Draft EIS (City of Renton 1980). In addition, on January 23 and 24, 1990 Jones & Stokes Associates staff conducted 24-hour ambient noise monitoring at the Black River heron rookery and for a comparison, at the Peasley Canyon rookery near State Highway 18, Auburn, Washington. Continuous 24-hour noise monitoring was conducted using a Larson-Davis Laboratories Model 700 noise monitor. Noise from the monitor were downloaded to a micro computer and data presented in spreadsheets and graphics. Detailed results are present in Appendix C of this EIS. A number of noise sources exist in the vicinity of Tracts A and B. These include vehicular noise along Naches Ave. S.W., S.W. 7th Street, Oakesdale Boulevard, and more distant roadways such as I-405, Grady Way and Monster Road; intermittent noise associated with warehouse and light industrial uses south of the sites; low-flying aircraft; occasional rail activities north of the site; and office building construction noise east of the rookery. According to the Earlington Park EIS, the L90 1980 ambient noise levels in the vicinity of Tracts A and B ranged from 47.5 to 51.5 decibals (dBA), with peaks to 78 dBA. Table 3-12 presents a summary of noise data for Black River and Peasley Canyon rookeries. As expected, nose levels are higher at Peasley Canyon than at Black River. The Ldn (day- night weighted average sound level) at Black River was 60.0 dBA and 65.0 dBA at Peasley Canyon. The Peasley Canyon rookery lies adjacent to State Highway 18, a Park-n-Ride lot and West Valley Road. Table 3-13 presents weighted sound levels and human response criteria for various noise levels,while Figure 3-7 and 3-8 present hourly average dBA values and 15-minute internal dBA levels for the two sites. The U.S.Environmental Protection Agency(1974)has identified indoor and outdoor noise limits to protect public health and welfare with an adequate margin of safety. Noise 3-43 Table 3-12. Noise Data Summary for Black River and Peasley Canyon Rookeries dBAs Statistic Black River Peasley Canyon Leq 56.3 62.1 SEL 105.6 111.4 Lmin 43.0 39.0 Lmax 83.0 84.5 Lpk 103.5 116.0 L10 58.5 64.5 L33 54.5 61.5 L50 52.5 60.0 L90 46.5 57.0 Hourly Average Leq 56.1 61.9 Ld 57.8 63.8 Le 54.6 61.0 Ln 52.5 56.9 Ldn 60.0 65.0 CNEL 60.3 65.5 All data collected with A-weighted, slow response (8 samples per second) meter settings Leq Equivalent constant sound level for the specified time period. SEL Single event level (cumulative noise event integrated over a 1-second period). Lmin Minimum 1-second average sound level. Lmax Maximum 1- second average sound level. Lpk Maximum sound level sampled during the specified time interval (8 readings per second). 14.0 Sound level exceeded 10 percent of the time. L33 Sound level exceeded 33 percent of the time. L50 Sound level exceeded 50 percent of the time. L90 Sound level exceeded 90 percent of the time. Ld Average daytime (7:00 a.m. - 7:00 p.m.) sound level. Le Average evening (7:00 p.m. - 10:00 p.m.) sound level. Ln Average nighttime (10:00 p.m. - 7:00 a.m.) sound level. Ldn Day-night weighted average sound level. CNEL Community noise equivalent level. Rounding errors cause 24-hour Leq computed from 15-minute Leq to differ slightly from the 24-hour Leq value computed directly by the noise meter. { 3-44 Table 3-13. Weighted Sound Levels and Human Response Sound Source dB(A)* Response Criteria --150 Carrier Deck Jet Operation --140 Painfully Loud --130 Limit Amplified Speech Jet Takeoff (200 feet) --120 Discotheque Auto Horn (3 feet) Maximum Vocal Effort Riveting Machine --110 Jet Takeoff (2,000 feet) Shout (0.5 feet) --100 N.Y. Subway Station Very Annoying Heavy Truck (50 feet) -- 90 Pneumatic Drill (50 feet) -- 80 Annoying Freight Train (50 feet) Freeway Traffic (5.0 feet) -- 70 Telephone Use Difficult Intrusive Air Conditioning Unit (20 feet) -- 60 Light Auto Traffic (50 feet) -- 50 Quiet Living Room Bedroom — 40 Library Soft Whisper (15 feet) -- 30 Very Quiet Broadcasting Studio -- 20 -- 10 Just Audible -- 0 Threshold of Hearing Typical A-Weighted sound levels taken with a sound-level meter and expressed as decibels on the scale. The "A" scale approximates the frequency response of the human ear. Source: U.S. Council on Environmental Quality 1970. 3-45 ' Y , ( - Figure 3 - 7 Hourly Average dBA Value 70 m 7 , 7 / 7 L _ 1 / / — / i / 60 / / ✓ I / / / / / / / 7 / / / / / / / / / F / /ec u_I / / / / / / ✓ i I / VI ht ✓' ✓yam r ✓ / / / / / / ! 7 7/ F;1 v"1 / D / / / / / r / / / /�_. / / / r j r' 1 5n 7 7 7 / ,' 7 7 7 7 7 i- /- e- CI i'•I .< n > / / / 7 / /` / 7 �Y L•+ r; r , ill ['t i a 7 7 w 40 '_'" 7 7 7 7 7 7 7 7 9' 7 7 7 L . ,X\ 1.1•� �i1 r': "1 7 7 7 7 0 / / � rat /j� ,�{ nt r'c roc �� ib< �.,•i /:i �/� rf Ac /� /��! /� 7 / / / / / /' 7 / 7 //fit 7 / 1 ,.. I / 7 7 1 . La j 30 -;'' 7 7 i 7 7 % 7 7 7 7 7/ i1.< , 7 .* 7 /)' 7 7 777777 � 7 7777. /' ;.:, %` / /"` 77 7 77 / 77 7777 ,X7 7 / 7 ,..8 ex O 2 0 —'` / / 7 �` / / / / /,` , /x / / / / //� /'� ex = 7 7 /7 7 c 7 /2 7 7 /7 7 7 7 7 7 I. /' 7 / //'� 7 /7 / 10 7 77 7 7 7 7 7 7 7 7 7 7 . 7 2 7 / 7 %, 7 7 /x 7 • 7 7 7 7 7 7 77 7 7 7 7 7 7 % 7 0; % / 7 7 7 7 0 '''` 7 7 7 2` • 7 7 7 7 7 /, 7 7 7 ✓, : 7 , /, /� 1, 7 1 1 AM 2 P M 5 P M 8 P M 1 1 P M 2 AM 5 AM 8 AM • BEGINNING OF TIME INTERVAL_ V//i PEAS LEY SITE Z BLACK SITE • Figure 3 - 8 15-Minute dBA Levels • I 70 -1 m n 'v" 11 Li.l I n11Li /ln `JO , > LI cEdi M CT ii II W 55 - u ►, r' -1- I- --) 1 rai yiel L�1 ` A- : c_ ( 'sr 45 - 40 r r r T r r r t r r r I 1 i I r r i r tTl'T'TITTTT-r r r r r r Z1TTTT I 1 1 AM 2 PM 5 PM 8 PM 11 PM 2 AM 5 AM 8 AM 11 AM BEGINNING OF TIME INTEPVAL- ❑ PEASLEY SITE -I- BLACK SITE level criteria for commercial and industrial areas are identified as 24-hour Leq values of 70 dB (both outdoors and indoors). Impacts Tracts A and B. Construction noise will be the most significant noise impact associated with the proposed projects and alternatives. The types of construction equipment used for this project will typically generate noise levels of 85-90 dBA at a distance of 50 feet while the equipment is operating (Figure 3-9). No explosives will be used, however, cast- in-place augering or pile driving will be necessary for foundations of each building. According to Lpn (letter dated January 16, 1990) and Golder Associates (letter dated January 25, 1990 and presented in Appendix D), auger cast piling construction is the most likely method to be used on buildings in excess of two-stories on both Tracts A and B. Construction equipment operations are somewhat variable,with episodes of multiple pieces of equipment operating concurrently. The assumption for this analysis is that general construction noise will be 90-95 dBA at a distance of 50 feet from the construction zone. Pile driving if used, will generate peak noise levels of up to 105 dBA; as an hourly average, pile driver noise will be closer to 84 dBA at a distance of 50 feet. Noise levels from auger cast piling construction is lacking, however, it can be assumed that noise levels will likely be comparable to those generated by air drilling rigs which on average produces a sound level of 88 dBA at 50 feet. Noise levels associated with construction will decrease with distance from the construction site. Noise attenuation with increasing distance from construction equipment is generally recognized to be 6 dB per doubling of distance. This attenuation factor ignores other factors such as sound absorption by dense vegetation, and atmospheric effects (wind and humidity conditions, sound reflection from inversion layers, etc.). Assuming 88 dBA noise levels at 50 feet, noise levels at the great blue heron rookery would be 70 dBA assuming the distance to the noise source is 400 feet and 67 dBA at a distance of 600 feet. In the event pile drivers are used, the noise generated is of greater concern. The potential for wildlife disturbance from pile driving is related more to peak noise levels than to average noise conditions. Peak pile driver noise would range from 83 to 87 dBA as measured at the heron rookery (Appendix C). These peak noise levels are 32-40 dBA greater than background noise levels and approximately 17 dBA greater than noise levels from augering. The increase from background to peak noise levels would occur in time intervals of less than 1 second. Given the relatively short distance from Tracts A and B to the heron rookery, there is a clear potential for disturbance to herons from pile driving operations during sensitive time periods. Results of the great blue heron study (Appendix B) for this EIS, indicate that great blue herons have nested successfully in close proximity to substantial generators of noise. , Studies have indicated that great blue herons will oftentimes become "acclimated" to an established level of noise intrusion, but will be more bothered by loud intermittent noises. Examples include the Peasley Canyon rookery which is located adjacent to three busy highways, the West Valley Road, Highway 18, and Peasley Canyon Road in Auburn, WA; the Delta River Inn rookery in Vancouver, B.C.; Ross Island, Portland, OR; and West Delta Park, OR. 3-46 NOISE LEVEL (dBAJ AT 50FT 60 70 80 - 90 100 110 COMPACTERS (ROLLERS) }{ cn FRONT LOADERS 1 1 w � z z o BACKHOES 1 w � , zo x TRACTORS 1 F- cc cow SCRAPERS, GRADERS 1 L.) PAVERS H cc TRUCKS 1 1 z � z CONCRETE MIXERSCO I 1 CO CONCRETE PUMPS H = cc cn w ---2 3 Q CRANES (MOVABLE) 1 1 o a_ w z a CRANES (DERRICK) H m a PUMPS H cc � a o GENERATORS 1 I- a COMPRESSORS 1 F— PNEUMATIC WRENCHES 1—z U w a-a JACK HAMMERS AND ROCK DRILLS 1 PILE DRIVERS (PEAKS) 1 w VIBRATOR 1 I- SAWS 1----I-1 Note: Based on Limited Available Data Samples Figure 3 - 9 Construction Equipment Noise Ranges Source: Bolt, Beranek, and Newman 1971. The results of noise monitoring at Peasley Canyon provide some idea of the noise levels created by heavy truck traffic, a steep incline on Highway 18 (necessitating downshifting) and relatively high speeds and tolerated by great blue herons. It is highly unlikely that most post-construction noise levels at Black River will ever equal those at Peasley Canyon due to the lack of a major high speed roadway for through traffic and because of the low-noise generating type of land use offered by office buildings. The proposed Tract A and B projects would result in traffic increases on local roadways. Traffic noise conditions are most sensitive to the extent of truck traffic and traffic speed. Traffic noise is less sensitive to changes in traffic volume. A doubling of traffic volume will increase noise levels by about 3 dB (a loudness increase of about 23 percent). Noise associated with daily activities in the office complex should not cause any adverse impact to the great blue heron. Mitigation Measures The following measures should be incorporated into construction contract specifications to prevent construction noise from becoming an unacceptable nuisance condition and to prevent adverse impacts to great blue herons: • Outdoor construction activities should be restricted to 7:00 a.m. to 8:00 p.m. during the summer months and 7:00 a.m. to 7:00 p.m. during the winter months; • All construction equipment should have sound control devices no less effective than those provided on the original equipment; • All construction equipment should comply with pertinent equipment noise standards of the U. S. Environmental Protection Agency; • The use of auger cast-in-place piling construction would be preferable to piling driving; • If pile drivers are to be used, they should be modified or designed to generate peak noise levels of less than 95 dBA at 50 feet (see Appendix C for information on pile driving techniques designed to reduce noise levels); and • Pile driving activity should be limited to the period from August 1 through February 15, the least sensitive time period for great blue heron use on the site. 3-47 3.7 Land and Shoreline Use 3.7.1 Relationship to Existing Land Uses Affected Environment Currently Tracts A and B are undeveloped but are not in natural conditions. Much of the native vegetation has been removed and fill consisting of dredge material from the construction of the P-i Pond and Channel was previously deposited on the sites. Both parcels have areas of shoreline. Tract A is bounded by the P-1 Pond to the north and the P-1 Channel to the east. Tract B is bounded to the west by the P-1 Channel (Springbrook Creek) and partially to the north by the P-1 Pond. The area in which the site is located is characterized by office and manufacturing parks. Overlooking the proposed site are hillside residential properties located 2,000 to 3,000 feet east of the sites. Impacts Tract A. Under Alternative Al, the use of the site would change from open space to office development. In relation to the adjacent properties the proposal would continue the general office and manufacturing park trend of land uses in the area. The proposed Phase 2 and 3, four-story buildings, would be similar to recent office park development in the area and would therefore not cause a significant impact. The No Action Alternative would not cause a significant impact since it would continue the use of the site as open space. It is likely that in the future the site would be developed in a similar manner to adjacent properties. Tract B. Although Alternative B1 would change the use of the site from open space to office park, the proposed use of the site would be consistent with other uses in the area. This in itself would not be a significant impact. The more significant impact of the proposal would be associated with the size of the seven-story office building proposed under Phase 3, and the precedence that would be set by the proposal. Many of the office buildings recently constructed in the area are three- to four-stories in height. The addition of the proposed Phase 1 and 2, three- to four-story buildings and the Phase 3, parking garage would therefore not cause a significant impact. The most significant impact of the proposal to land use would be the contrast in the height of the proposed Phase 3, seven-story building to other development in the immediate area. In Renton there is only one building taller than the proposed seven-story building; a non-story building located in Renton's downtown area. If the proposed Phase 3 building was to be developed, a precedence could be set for further highrise development in the area. The City of Renton does not, however, have any restrictions on building height (see page A-10 item 4 of Appendix A). Alternative B2 would have essentially the same impact to land use as the Alternative B1 Phase 3 building due to the addition of a seven-story building to the area. 3-48 Under No Action (Alternative B3), the use of the site would continue as open space and would therefore not be an impact to existing land use. Unless the site is purchased by the City it is likely that it would be developed in the future with a similar type of development as the surrounding area. Mitigation Measures Mitigation to insure greater height compatibility with established buildings in the area, could include a reduction in the number of stories in the Phase 3, seven-story Tract B building or a shift in density from Tract B to Tract A. 3.7.2 Relationship to Plans, Zoning and Shorelines Affected Environment Comprehensive Plan. An overview of the purposes of the Comprehensive Plan is presented in Appendix A. The City of Renton Comprehensive Plan of March 1986 is a general and flexible program which is intended to guide development but is up for periodic review by the City. The Plan is divided into General Goals of the City and Area Specific goals and policies. General Goals. Objectives, and Policies. A series of long-range goals, objectives, and policies have been developed relative to the needs of the city. There are 10 goals of the Comprehensive Plan described through the objectives and implemented through policies. Appendix A delineates the relevant goals and objectives. Specific policies under each objective and the consistency of the project to each are shown in Table 3-14. Area Specific Policies-Green River Valley Policy Plan. Following the general goals of the Comprehensive Plan are area specific goals and policies. The project site is included in the Green River Valley Policy Plan (City of Renton 1984). The general goal of this plan is that the Valley Planning Area 'be developed with a diversity of high quality industrial, commercial, and office uses.". The Valley should be the principal growth area for these uses within the City of Renton and development within the Valley should be compatible with the availability of services and transportation and with the environmental objectives of the City of Renton. Specific goals for the Valley are presented in Appendix A and policies of the Area Specific Plan are shown in Table 3-14. Zoning Ordinance. The City of Renton zoned Tracts A and B as O-P in 1986. Until 1986, the City zoning had been Manufacturing - Park. The purpose of the O-P district is to "provide areas appropriate for professional, administrative,and business offices, certain manufacturing activities, and supportive services in a campus-like setting" (Zoning Ordinance Section 4-718, which is the Office Park District regulations, is included in full as Appendix A of this document). 3-49 Table 3-14. Consistency of Proposed Actions for Tracts A and B with City of Renton Comprehensive Plan Policies Category Policy Assessment of Consistency Environmental Balanced Development Urban development should Alternatives Al and B1 - consistent. compensate for the services that it requires. Open Space Natural vegetation, ravines,slopes, and Alternative Al- consistent. water bodies should be preserved to Alternative B1 - partially consistent - retain open space. vegetation to be lost, small portion of wetland filled. Areas or strips of open space should Alternative B1 - partially inconsistent be retained and enhanced to serve as buffers previously removed on portions in buffers. of site. Wildlife Habitat Wildlife habitat should be designated, Alternatives Al and B1 - consistent. preserved, and enhanced. Vegetation Desirable natural vegetation should be Alternatives Al and B1 - consistent. retained wherever possible. In unique and/or fragile area, Alternatives Al and B1 - consistent. desirable natural vegetation should be retained or enhanced. Healthy trees should be retained where Alternatives Al and B1 - consistent. possible. Category Policy Assessment of Consistency Resources Natural resources and areas having Alternatives Al and Bl - consistent. scientific or educational value should be identified and preserved. Surface Drainage Storm waters should be retained on- Alternatives Al and B1- consistent- site and then released at a natural rate retention on site not required, water and quality. quality improvements on-site proposed. Precipitation should be returned to the Alternatives Al and Bl- partially soil at natural rates near where it falls. consistent - precipitation to be discharged to P-1 Pond. w Development should be designed to Partially consistent - majority of the c- facilitate percolation and to minimize site proposed under Alternative B1 for ~ impermeable surfaces. impervious surfaces although proposal is within the guidelines. Development should include Alternative Al and B1 - consistent. appropriate design and/or equipment to ensure clean runoff. Waterbodies Public access to publicly- owned areas Alternatives Al and B1 - consistent. along waterbodies should be provided. Development should be designed to Alternatives Al and B1 partially allow the most compatible and consistent - the vegetated buffer will be aesthetic use to be placed near the compatible with the P-1 Pond, waterbodies. especially the wildlife use of it,while buildings and parking will be less compatible. Category Policy Assessment of Consistency Development should be designed and Alternatives Al and B1 - consistent. constructed to incorporate features of waterbodies. Development should be oriented Alternatives Al and Bl - consistent. towards waterbodies. Soils Structures should be built only on soils Alternatives Al and B1 - consistent - with adequate load-bearing capacity pilings would provide structural including structural design adequate to integrity for buildings greater than two- accommodate existing soil conditions. stories in height. Economic Fiscal Balance Activities should not overextend public Alternative Al and B1- consistent. facilities or services. Urban Design Landscape Landscaping which enhances the Consistent according to 12/12/89 site primary design should be place around plan. all structures, in the interior of parking lots, and along the periphery of the site. Refuse and/or other unsightly areas Consistent according to 12/12/89 site should be screened and landscaped. plan. Landscaping which is suitable for Alternatives Al and B1 - consistent- screening and buffering should be as long as vegetated buffer is provided between use area. established as recommended. Category Policy Assessment of Consistency Landscaping Design& Maintenance Materials and designs should reflect Alternatives Al and B1 - partially the function, scale, and type of area consistent - the landscape design being landscaped. appears to scale on the site plans although the trees won't reach the size shown for many years, existing cotton- woods to be retained will provide landscape more in scale with proposed buildings. An adequate irrigation system should This will be the responsibility of the be installed where appropriate. City during design approval. Plant materials should be selected to This will be the responsibility of the promote safety and minimize City during design approval. interference with utilities and traffic. Desirable natural vegetation should be Consistent. incorporated into the design where appropriate. All landscaping should be well This will be the responsibility of the maintained. City to enforce. Landscaping should be compatible with Partially consistent - plant species such significant natural conditions. as Lombardy poplar on Tracts A and B not native to area.A majority of the mature cottonwoods would be preserved. Signs Signs should be compatible with the Unable to determine at this point in scale and architectural style of the design process. development. Category Policy Assessment of Consistency Landscaping should be installed This will be the responsibility of the around signs where appropriate. City to determine. Traffic hazards should be minimized To be determined during design by proper location and design of signs. approval. Visibility of other signs and/or scenic This will be the responsibility of the areas should not be obstructed. City to enforce. Commercial Commercial Structure&Sites Structure should be adequately set Consistent. 0 ° W back and buffered from other uses. N Site plan design should provide for Setbacks of structures are adequate; efficient and functional use of land. the Alternative Bl. Phase 3 seven- story building though could not be buffered adequately from surrounding uses. Some parking will be a long distance to buildings. Transportation Facilities Transportation facilities should be Consistent. coordinated with and integrated into the surrounding land uses. The development of property should Consistent - the developers have provide for public street improvements contributed to the Oakesdale LID. necessary to serve the site Category Policy Assessment of Consistency Specialized transportation for the This will need to be enforced by the handicapped should be accommodated. City. Maximum consideration should be Consistent. given to aesthetics of transportation facilities. Trails Trails should take advantage of views Consistent. • and amenities. To improve pedestrian safety, trails Consistent. should be separated from vehicular traffic. tim Trails should be constructed to provide Could not be determined at this time'. user safety including lighting. Utilities Storm Drainage The man-made storm drainage system Alternative Al - consistent. should incorporate the natural system Alternative B1 - partially consistent - with appropriate measures to assure swale at north end of Tract B to be safety. regraded and replanted to provide flow passage and treatment. Polluted water should not be Consistent. discharged into the storm sewer system. New developments should be designed Consistent. to provide for safe collection and discharge of runoff. • Category Policy Assessment of Consistency Sanitary Sewers All development should be connected Consistent. to a sanitary sewer system. Area Specific Policies - Green River Valley Policy Plan Urban Design Ample landscaping should be provided Alternative Al - consistent. throughout a developed site, including Alternative B2- partially consistent - along property lines, to provide a ample landscaping is provided on the pleasant environment, minimize the 12/12/89 site plan but the seven-story impact of development, and enhance building could not be adequately the visual experience from adjacent buffered. properties including hillsides. In addition, landscaped buffers should be established adjacent to public right- of-way, between areas of incompatible land use, and long water channels and wildlife habitatsAlternative Al - consistent. Alternative Bl - partially consistent - seven-story building could not be adequately buffered. Parking and loading areas should be Consistent. adequately screened and landscaped. - - Category Policy Assessment of Consistency The additional 2 percent natural Consistent. landscaping required for developed sites in the Valley by Soil Conservation Service Environmental Mitigation Agreement should not be dispersed throughout a site,but should be aggregated in one portion of the property. Where possible, the required 2 percent landscaping for adjacent properties should be contiguous. The design, placement, and size of To be determined by the City. signs should be compatible with high quality development. w tom Storm Drainage/Flood Control New development throughout the Consistent. Valley should provide on-site and lateral storm drainage as part of the overall storm drainage plan for the Valley. Transportation New development should help finance Consistent. off-site street and traffic control improvements in proportion to the additional traffic impacts created. Utilities New development should provide for To be enforced by the City. utility extensions to service itself. Wetland/Wildlife Wherever feasible, unique natural Alternative Al - consistent. Habitat/Floodplain features should be incorporated into Alternative B1 - partially consistent - a developmental plans to preserve the small portion of wetlands proposed to character of the Valley. be filled. Category Policy Assessment of Consistency Remaining wildlife habitat in the Consistent - the most significant Valley should be preserved or its loss habitat will be retained. should be mitigated. Areas that provide wildlife habitat, Consistent so long as mitigation such as designated wetland greenbelts measures are carried out. and stream corridors, should be large • enough to provide suitable cover for wildlife and buffering from adjacent uses. The City's 1981 Wetlands Study should N/A be used as a basis for establishing the priority of wetlands for acquisition and/or protection. A substantial portion of the Black Consistent - significant cottonwood oo River Riparian Forest should be trees remaining on Tract B will be preserved in its natural state as a preserved. unique remnant of the Valley flora. Whenever feasible, retention of natural Partially consistent - small portion of wetlands should be pursues as an wetland to be filled. alternative to structural flood control measures. Recreation Provision of recreational opportunities Consistent - provision of jogging trail, should be an integral part of exercise stations and horseshoe courts. development in the Valley. Recreational opportunities in the Consistent - recreational facilities Valley that serve both employees and provided can be used by the public as the community should be encouraged. well as employees. Category Policy Assessment of Consistency Firms with large numbers of This will be the responsibility of the employees should develop outdoor City to enforce. recreation facilities. Wherever feasible, Consistent. greenbelt/openspace/wildlife habitats should be managed to include recreational opportunities as a secondary objective. A pedestrian/bicycle path system Consistent - trail will be built to separate from the street system and a eventually connect with trail system at system of bicycle routes should be Fort Dent Park. w incorporated in the developmental plan for the Valley and should connect with �o other trails or recreation destinations. Land Use - Manufacturing The area west of Powell Avenue S.W. Alternative Al - consistent. Phase 3 of Park/Multiple Option and north of S.W. 7th Street between Alternative B1 - consistent-the seven- the P-1 channel and the Building ton story building proposed on Tract B, Northern railroad and generally which is included in this area, is not surrounding the P-1 forebay storage low rise. pond should be specifically designated as manufacturing Park/Multiple Option - Office. The implementation of office and other similar service and light industrial activities in low rise building structures should be encouraged. These small to medium scale office and business park uses should be harmonious with their setting and should take advantage of the amenities offered by the forebay pond and Black river Forest. Large scale warehousing and industrial uses should be discouraged. Category Policy Assessment of Consistency The remaining areas designated simply Consistent. for Manufacturing Park/Multiple Option are intended to provide the opportunity to choose among a wide range of light industrial and compatible heavy industrial, commercial and office uses. 0 Uses. The final decision of the on whether a use is permitted within the O- P Zone is made by the City of Renton Hearing Examiner. Uses must be either listed in the zoning ordinance or be of similar character. Principal uses permitted in the O-P Zone listed in Appendix A. Conditional uses, which are uses normally prohibited within a zoning district but are allowed with a conditional use permit,within the O-P Zone range from churches to on-site hazardous waste treatment and storage facilities. Conditionally permitted uses are allowed when judged by the City Hearing Examiner to be consistent with other existing and potential uses in the zone (Zoning Ordinance Section 4-748(A)). Residential uses are not permitted in this zone. Development Standards. Standards relevant to the proposed project are summarized in Appendix A. The City's Environmental Performance Standards (Zoning Ordinance Section 4- 718[C]7c) pertain to noise, smoke, dust, dirt, odorous and toxic gases, vibration, glare, and heat. Light and glare regulations will be discussed later in this EIS. Under the Landscaping requirements of the Zoning Ordinance (Section 4-744[F]2) is a requirement relevant to the proposal. "Green River Valley: Any development in the Green River Valley shall provide a minimum of two percent (2 percent) of the total site for landscaping suitable for wildlife habitat. This landscaping is in addition to any other landscaping requirements by this Section or any other ordinance." Land Clearing and Tree Cutting Ordinance. This ordinance, which "provides regulations for clearing of land and the protection and preservation of trees," became effective on June 12, 1989. According to this ordinance the developer is required to submit a land clearing and tree cutting plan to the City for review and approval as part of the environmental review process. All land clearing and cutting activities shall comply with the performance standards set forth in this ordinance which include: • There shall be no clear cutting of trees for the sake of preparing a site for future development; • Trees shall be retained on the site to the maximum extent feasible; • Timing of land clearing and cutting activities may be restricted by the City; • Native Growth Protection Easements may be established on a site which could include the wetlands, shorelines, and cottonwood stands on the proposed sites; • No trees or ground cover shall be disturbed within 25 feet of the annual high water mark or within 15 feet of the top of the bank of the P-1 Pond or P-1 Channel; • The developer may be required by the City to relocate or replace trees or implement other plantings; 3-61 � 1 f i • No clearing or cutting is allowed in wetlands is permitted except enhancement activities; and ul • Protection measures are required for all trees that are to remain. The following protection measures are to be employed for trees that are to be retained: • The applicant may not fill, excavate,stack or store any equipment,or compact the earth in any way within the area defined by the dripline of any tree to be retained; • The applicant shall erect and maintain rope barriers or place bales of hay on the dripline to protect the roots supervision shall be provided whenever equipment or trucks are moving near trees; • If the grade level adjoining to a tree to be retained is to be raised, the applicant shall construct a dry rock wall or rock well around the tree with a diameter defined by the dripline; • The applicant may not install impervious surface material within the area designed by the drilline of any tree to be retained; • The grade level around any tree to be retained may not be lowered within the area defined of (1) the area defined by the driline of the tree, or (2) the area around the tree equal to one foot in diameter for each 1-inch of tree caliper; and • The applicant shall prune branches and roots, fertilize, and water as appropriate for any trees and ground cover which are to be retained. Shoreline Master Program. Renton's Shoreline Master Program was adopted on December 5, 1983 in compliance with the Shoreline Management Act of 1971 revised on July 22, 1985. Construction of the P-1 Pond and Channel was completed in 1984, prior to the 1985 revisions. In the Shoreline Program document no mention is made of the P-1 Pond and channel construction; the site's water features are referred to as the Black River and Springbrook Creek. The northern shoreline of the Black River (or the P-1 Pond) west of its confluence with Springbrook Creek (or the P-1 Channel) is designated as natural. Its southern shoreline, which is the shoreline of the site, is designated as Urban. The Shoreline Master Program is intended to be long range, comprehensive and general as to be applicable to all of Renton's shorelines. "The basic intent of this Master Program is to provide for the management of our City's (Renton's) shorelines by planning for and fostering all reasonable and appropriate uses and to ensure, if development takes place, that it is done in a manner which will promote and enhance the best interests of the !' general public." The program was formulated as to provide uses for the shorelines in the following order of preference: kl pl 3-62 i - • Recognize and protect the state-wide interest over local interest on shorelines of state-wide significance; • Preserve the natural character of the shorelines; • Result in long-term over short-term benefits; • Protect the resources and ecology of the shorelines; • Increase public access to publicly owned areas of the shorelines; • Increase recreational opportunities for the public in the shorelines; and • Provide for any other element deemed appropriate or necessary. The proposed Phase VII site has a shoreline designation of"Urban"which means that it is an area of high intensity land use including residential, commercial, and industrial development. Tracts A and B of the proposal are located on the south side of the P-1 Pond and are divided by Springbrook Creek. Commercial development is encouraged where commercial development already exists although emphasis should be placed on water- dependent activities. Buildings proposed for the shoreline must be setback a minimum of fifty feet and emphasis should be placed on design and function. Landscaping should be of an indigenous character to the type of waterway. It is encouraged that commercial development incorporate recreational opportunities along the shoreline for the public into the site design. Impacts Tract A Comprehensive Plan. The buildings proposed under all phases of Alternative Al would be consistent with other office buildings recently built in the vicinity, and would therefore be consistent with the City's Comprehensive Plan goals, objectives, and policies. Under Alternative A2 (No Action), non-development of Tract A would not be consistent with the designation of the site as office park in the Comprehensive Plan. Zoning Ordinance. Alternative Al is generally consistent with zoning regulations. Setback, height, (the City has not established building height limitations), landscaping, parking/circulation requirements are met with the proposed site plan. Environmental Performance Standards appear will need to be met,,especially with respect to glare impacts from reflective glass and outside lighting. Light and glare impacts are discussed in Section 3.7.3. Under Alternative A2 (No Action), the site would be left as open space which not be consistent with the zoning designation of the site. Land Clearing and Tree Cutting Ordinance. Alternative Al would not require any tree cutting or substantial land clearing. 3-63 With Alternative A2 (No Action) no clearing or tree cutting would occur except possibly at a later date. Any tree cutting or clearing done in the future would be required to be in compliance with this ordinance. Shoreline Master Program. Setback requirements would be met with the proposed site plan. The principal inconsistency is the use of the site as an office park rather than a water dependent commercial use. The Alternative A2 (No Action) would not be consistent with the Shoreline Master Program's encouragement of commercial use of the urban shoreline. The No Action Alternative also would not be consistent with the Shoreline Master Program encouragement of commercial use of the urban shoreline. Tract B Comprehensive Plan. For the most part Alternative B1 (Proposed Action) would be consistent with the Comprehensive Plan. Table 3-14 presents an itemized analysis consisting of the proposed action and the Comprehensive Plan. The primary inconsistency of Alternative B1 is that the Phase 3 seven-story building would not be in keeping with the land use policy of the Green River Valley Policy Plan that office and other similar service and light industrial activities be in low rise building structures. As mentioned previously, the seven-story building proposed would be three- to four-stories taller than other office developments in the area, and, as such would not be in harmony with established intensity. It also would not qualify as a low rise structure. The Phase 1 and 2, three- and four-story buildings would be in character with the more recent land uses. Alternative B2 would have essentially the same impact as Alternative B1 in that the height of the seven-story building would not be compatible with the type of development currently in the vicinity of the site. Alternative B3 (No Action) would not be compatible with the Comprehensive Plan designation of the site since the site would remain as open space. Zoning Ordinance. Alternatives B1 and B2 are consistent with zoning regulations. Setback,height,landscaping,parking/circulation requirements are met with the proposed site plans. Environmental Performance Standards will need to be met, especially with respect to glare impacts from reflective glass and outside lighting. Light and glare impacts are discussed in Section 3.7.3. Under Alternative B3 (No Action),the site would be used as open space which would not be consistent with the zoning ordinance designation of the site. Land Clearing and Tree Cutting Ordinance. Alternative B1 is generally in compliance with this ordinance except that the plan shows impervious surfaces of the 3-64 proposed parking lot within the dripline of a number of the trees that are to be retained. As required under the ordinance,impervious surface must be located outsite of the dripline. The impacts associated with Alternative B1 would also occur with Alternative B2. With Alternative B3 (No Action Alternative) no clearing or tree cutting would occur except possibly at a later date. Any tree cutting or clearing done in the future would be required to be in compliance with this ordinance. Shoreline Master Program. The general regulations with which Alternatives B1 and B2 are not in compliance are that emphasis be placed on water dependent commercial use within a commercial area and that the design of the site be well coordinated and serve a useful purpose. The office building as proposed is not a water dependent, however, the proposed actions are consistent with the zoning of the property established by the City. Under Alternatives B3 (No Action), the site would remain as open space which would not be consistent with the Master Program which encourages the use of water- dependent commercial use for urban shorelines within a commercial area. Mitigation Measures Tract A. Maintenance of the vegetation on the site once the project is in place must be in compliance with the vegetation management requirements described in the Land Clearing and Tree Cutting Ordinance (see Appendix A). Tract B. Impacts associated with the incompatibility of the seven-story buildings proposed in Alternatives B1 and B2 with the height of buildings in the vicinity of the site could only be mitigated with a reduction in the height of the proposed buildings. Buffering would not be sufficient. Inconsistency with the Land Clearing and Tree Cutting Ordinance regulations regarding protection of trees to be retained on a development site should be mitigated through redesign of the parking lot. No paved surfaces or construction activities are to occur within the dripline of trees to be retained. Maintenance of the vegetation on the site once the project is in place must be in compliance with the vegetation management requirements described in the ordinance (see Appendix A). 3.7.3 Light and Glare Affected Environment Light and glare associated with the Tract A and B study areas is limited to lights from the nearby Metro Renton wastewater treatment facility located to the south, and to street lights along Naches Avenue, S.W. 7th Street and Oakesdale Boulevard. Existing office park development and warehouses east of the site also have night time lighting for parking and buildings. 3-65 Glare in the area is limited to expanses of glass on office park buildings and reflection off shiny metal surfaces and automobile glass. Impacts f I Proposed Actions for both Tracts A and B and the alternatives would require outdoor lighting for parking, pedestrian paths, and access roads, and indoor lighting for office space, hallways, and foyer. Tract A. Under Alternative Al, lighting for parking areas will have less than 5 foot- candles, a level of light low enough that the light will not be visible from off site (DBA, Inc. pers. comm.). An additional factor minimizing the impacts of parking lights above the site will be that the light structures will be downlighted. . At the perimeter of the illuminated area, light is sharply cut-off, similar to a wall of light against darkness, thereby eliminating spill light. The source of light from automobiles will be of greater significance than from outdoor lighting. Automobile lights can be screened from the rookery through the use of dense evergreen foliage or a screening fence. Light from within the building should not be a problem since that light is of a diffuse indirect source rather than a direct beam of light. According to the U.S. Fish and Wildlife Service (1950) direct light beams are the principal cause of bird collisions with structures. Additionally, night lighting within the buildings should be minimal, restricted to security lighting. Tract B. Under both the Proposed Action and alternatives (Alternative B1 and B2), outdoor lighting will consist of 23 inches by 17 inches directed floodlights. These lights will use 250 watt high pressure sodium lamps. The lights will be mounted on 20- to 30-foot tall square steel poles. The impact of parking lights will be as described for Tract A. Because of the height of the proposed Phase 3 building (seven stories), a mass of lit surface area will be immediately adjacent to the great blue heron flight zone on the west side of the site. Alternative B2 and would result in somewhat greater impact than B1 because of the larger mass and location of the building. Under No Action, there would not be any impact from light or glare. Mitigation Measures Mitigation measures that could be utilized for both Tracts A and B and Alternative B2 include the following: • Use of downlighted light structures in the parking areas to confine light to ground level; • Use of a dense evergreen vegetated screen to reduce the effect of automobile F, headlights, particularly on Tract A which has no existing dense, tall-growing vegetation; and 3-66 . u Use of non-reflective coated or tinted glass and hooded windows for the sides of the buildings facing the heron rookery. 3.7.4 Historic and Cultural Resources Affected Environment Extensive surveys and archaeological excavations were conducted in the study area as a part of the proposed Earlington Park project in 1980 and 1981. As a result of -reconnaissance and test core surveys, the University of Washington conducted an archaeological excavation of Site 45K153. Artifacts were removed from the site and an report on the excavations was prepared by James C. Chatters, Project Director. In 1984, Tract A was filled with material excavated from the P-1 Pond. As a part of the same excavation program, portions of Tract B were also filled. Impacts Because of the comprehensive archaeological investigations that were previously completed on the site, analysis of cultural and archaeological resources was not identified as a scoping issue by the City of Renton and not included as a part of this EIS. Please refer to the Draft and Final EISs for Earlington Park (City of Renton 1980; 1981) and the final report prepared by James Chatters for further information on this topic. 3.8 Transportation 3.8.1 Traffic Affected Environment Tracts A and B fronted by Oakesdale Boulevard on the south side of the properties. Naches Avenue and S.W. 7th Street abut Tract B on the east and southeast. Oakesdale Boulevard joins S.W. Grady Way to the west of the sites. In 1988, The Transpo Group competed a transportation study for FCDC entitled the "Grady Way Corridor Transportation Improvement Study"which was a comprehensive traffic analysis of projected traffic volumes and needed improvements to accommodate those projected volumes in the area. The Tract A and B sites were a part of that study (Nordin pers. comm.). Impacts Because the development of Tracts A and B as office park were included as a part of the traffic analysis of the Grady Way corridor study, and because Oakesdale Boulevard 3-67 has been designed and constructed to handle projected year 2000 traffic volumes (assuming full build out of the area per what is allowed under the City of Renton's Comprehensive Plan), analysis of transportation was not identified as a scoping issue by the City of Renton and not included as a part of this EIS. Please refer to the Grady Way Corridor Transportation Improvement Study for further information on this topic. 3.9 Public Services and Utilities 3.9.1 Park and Other Recreational Facilities Affected Environment Current recreational use of the site is for the most part passive. Activities might include bird watching and lunchtime relaxation. Off site, several parks and the City of Renton Community Center are within a few miles of the site. The closest parks to the site, within the City of Renton, are Earlington to the north, Philip Arnold to the northeast, Teasdale to the east, and Oakesdale (Springbrook Creek trail) to the south (Chastain pers. comet.). Just west of the site within the Tukwila city limits is Fort Dent Park. As part of the proposed project horseshoe courts and trail system with exercise stations will be developed through the site and is anticipated to be connected to the trail system at Fort Dent Park. Locker rooms and shower facilities will also be included on the site (Coppock pers. comm.). Impacts An incremental increase in use of recreational facilities within Renton and the surrounding area is likely as a result of the proposed office park development which is expected to add approximately 2,300 people to the area during daytime hours (Coppock pers. comet.). Increased use of City recreational facilities will be made by employees of companies occupying the proposed buildings and possibly by families of employees who move to the Renton area. Mitigation Measures • FCDC should work with the City of Renton Parks and Recreation Department to plan and design to the specifications of the City, that portion of the City of Renton pedestrian trails system planned to cross Tracts A and B; and • The trail should be located so as not to conflict with guidelines set forth in Section 3.5.4 and Appendix B of this EIS. 3-68 CHAPTER 4 C 8 CHAPTER 4 REFERENCES 4.1 Literature Cited Earth Consultants,Inc. 1979. Preliminary soil and foundation investigation Earlington Park, Renton, Washington. 9 pp. plus appendices. LPN,Architects and Planners. 1988. SEPA environmental checklist-Blackriver Corporate Park, Phase VII office facility. 16 pp. Metro. 1988. Quality of local lakes and streams: 1986-1987 status report. Publication 167. Renton, City of. 1986. Compendium - City of Renton comprehensive plan. Renton, City of. No date. City of Renton zoning ordinance. Renton, City of. 1987. Report and decision of the hearing examiner for approval of a special use permit to grade and fill property on Blackriver Corporate Park property (SP-100-86). Renton, City of. 1985. Shoreline master program. 46 pp. Renton, City of. n.d. Miscellaneous correspondence and files associated with Earlington Park and Blackriver Office Park. Renton, City of. 1981. Wetlands study - A reconnaissance study of selected wetlands in the City of Renton. Prepared by the City of Renton Planning Department and Northwest Environmental Consultants, Inc. 24 pp. plus app. Renton, City of. 1981. Final environmental impact statement - Black River Office Park. Prepared by R. W. Thorpe and Associates. Renton, City of. 1981. Final environmental impact statement - Earlington Park. Prepared by R. W. Thorpe and Associates. 33 pp. Renton, City of. 1980. Draft environmental impact statement - Earlington Park. Prepared by R. W. Thorpe and Associates. 130 pp. plus app. Renton, City of. 1981. Draft environmental impact statement - Black River Office Park. Prepared by R. W. Thorpe and Associates. 115 pp. Thorpe and Associates. 1981. Final environmental impact statement-Earlington Park, City of Renton. 71 pp. plus app. 4-1 Transpo Group. 1988. Grady Way corridor transportation improvement study. July, 5 1988. U. S. Fish and Wildlife Service. 1950. Migration of birds. Circular 16. Frederick Lincoln, Biologist. 102 pp. U. S. Soil Conservation Service. 1973. Soil survey - King County Area, Washington. 100 PP. Van Wormer, R. L. 1989. Letter dated June 29, 1989 to J. Ives regarding 1989 blue heron survey data for Black River Corporate Park heron rookery. 2 pp. 4.2 Personal Communications Berg, R. A., A.I.A. May 2, 1989. President, LPN, Architects and Planners. Meeting with J. Ives, JSA. Chastain, Sam. February 2, 1990. Superintendent. City of Renton Parks and Recreation, Renton, WA. Telephone conversation. Coppock, P. Architect, LPN, Architects and Planners. Letters and numerous telephone conversations with J. Ives and A. O'Leary, JSA. Erickson, D. K. March - July 1989. City of Renton, Zoning Administrator. Numerous telephone conversations and meetings with JSA staff. McAllister, K. July 5, 1989. Wildlife Biologist. Nongame Wildlife Program, Washington Department of Wildlife. Telephone conversation. Miller, M. April July, 1989. Vice President of Development,First City Developments Corp. Numerous telephone conversations with J. Ives, JSA. Nordin, R. July 6, 1989. City of Renton, Assistant Transportation Planning Engineer, Transportation Services Division. Telephone conversation. Penland, S. May 31, 1989. Urban Wildlife Biologist, Washington Department of Wildlife. Telephone conversation. Price, C. June 29, 1989. Stormwater Engineer, City of Renton. Meeting. Roed, B. June 28, 1989. Principal, Bush Roed and Hitchings Engineers. Telephone conversation. Samek-McKague, J. May - July, 1989. City of Renton, Department of Community Development. Numerous telephone conversations and meetings with JSA staff. Van Wormer, R. July 5, 1989. Senior biologist, IES Associates, Olympia, WA. Telephone conversation. 4-2 APPENDIX A Zoning Code Excerpts and Overview of Comprehensive Plan, Green River Plan, Zoning Ordinances and Development Standards, Land Clearing and Tree Cutting Ordinances is OVERVIEW OF CITY OF RENTON COMPREHENSIVE PLAN ZONING CODE, DEVELOPMENT STANDARDS AND GREEN RIVER POLICY PLAN Comprehensive Plan. The City of Renton Comprehensive Plan of March 1986 is a general and flexible program which is intended to guide development but is open for re- ' evaluation. "The purposes of the Comprehensive Plan are: • To improve the physical and social environment of the City as a setting for human activities -- to make it more functional, beautiful, decent, healthful, interesting, and efficient; • To insure acceptable levels of access, utilities and other public services to future growth and development; • To promote the public interest, and the interest of the City at large; • • To facilitate the democratic determination and implementation of City policies and development; • To effect coordination in development; • To inject long-range considerations into the determination of short-range actions; and • To provide professional and technical knowledge in the decisions affecting development of the City." (sic)(p.3) The Plan is divided into General Goals of the City and Area Specific goals and policies. General Goals. Objectives, and Policies. A series of long-range goals, objectives, and policies were developed that are relative to the needs of the city. There are 10 goals of the Comprehensive Plan that are described through the objectives and are implemented through the policies. The following outline delineates the relevant goals and objectives. • Environmental Goal: "To establish and maintain a harmonious relationship between the developed community and its natural environment."(p.8) Balanced Development Objective: A balance between economy, availability of services, and the needs of the environment. Open Space Objective: Specified areas should be selected and maintained as open space. A-1 Wildlife Habitat Objective: Wildlife habitats should be designated, preserved and enhanced. Vegetation Objective: Preservation of vegetation to preserve scenic beauty,prevent erosion,protect against floods and landslides,minimize air pollution, and reduce storm drainage costs. Resources Objective: "Natural resources and areas having scientific or educational value should be identified and preserved." This objective is also a policy. Surface Drainage Objective: Surface drainage is to be controlled "to remove harmful materials and sediments, replenish ground water resources, and minimize erosion and floods." Waterbodies Objective: Natural waterbodies are to be preserved "to minimize flood damage,minimize the need for storm drainage facilities, promote recreational opportunities, protect wildlife habitats, and enhance adjacent uses." Soils Objective: Development is to be compatible with soils. • Economic Goal: "To promote a sound, diversified economic base. Objectives are to encourage fiscal balance and employment." Fiscal Balance Objective: Balance between municipal costs and revenue. • Urban Design Goal: "To promote aesthetic and functional harmony and to provide a proper balance of residential, commercial, and industrial areas." Landscape Objective: Landscaping that is used for buffering, screening less attractive activities, and minimizing detrimental impact between j uses. Landscape Design and Maintenance Objectives: Design and maintenance to produce a desirable effect and to promote safety. Signs Objective: Signs that are compatible with the site and surrounding area. • Commercial Goal: 'To promote attractive, convenient, viable systems of commercial facilities." Commercial Areas Objective: the creation of sound commercial areas and revitalization of declining areas. A-2 i - Commercial Structure and Sites Objective: Commercial structures and sites that are well-designed, constructed, and maintained. • Transportation Goal: 'To promote a safe, efficient and balanced multi-model transportation system." Facilities Objective: Creation of viable transportation facilities and removal of non-functional ones. Trails Objective: Trails that are well located, designed, constructed, and maintained and form trail systems throughout the City. • Utilities Goal: 'To ensure an adequate supply and equitable distribution of utility services." General Objective: Utilities that are well planned, located, designed, constructed, and maintained and upgraded where necessary. Water Objective: Assurance of an adequate water supply and distribution system. Storm Drainage Objective: Assurance of an adequate storm drainage system which minimizes the impacts on the natural drainage features. - Sanitary Sewers Objective: An adequate sanitary sewer system is provided. Area Specific Policies -Green River Valley Policy Plan. Following the general goals of the Comprehensive Plan are area specific goals and policies. The proposed site is included in the Green River Valley Policy Plan. The general goal of this plan is that the Valley Planning Area "be developed with a diversity of high quality industrial, commercial, and office uses. The Valley should be the principal growth area for these uses within the City of Renton. Development within the Valley should be compatible with the availability of services and transportation and with the environmental objectives. Specific goals for the Valley are: • Land Use Goal: "To promote development of the Valley in a diversity of high quality industrial uses, together with commercial and office uses." • Economic Goal: "To promote land development and commerce that will enhance a stable, diversified economic base for residents, employees, and businesses in the City of Renton." • Environmental Goal: 'To ensure that development of the Valley is harmonious with the natural environmental setting,while minimizing pollution and other adverse environmental impacts." 41 A-3 it , • Urban Design Goal: 'To promote a functional and aesthetic balance among industrial, commercial,office,recreation, and other uses in the Valley through appropriate design standards and a logical land use pattern." • Transportation Goal: 'To promote efficient transportation within the \7alley and adequate access to and from the Valley Planning Area." • Urban Services Goal: 'To promote the adequate provision of utility services (including storm drainage control), community facilities, and recreational opportunities in the Valley."(p.31-32) Zoning Ordinance. The City of Renton zoned Tracts A and B as Office - Park in 1986. Until 1986, the City zoning had been Manufacturing - Park. The purpose of the O- P district is to "provide areas appropriate for professional, administrative, and business offices, certain manufacturing activities, and supportive services in a campus-like setting" (Zoning Ordinance Section 4-718, which is the Office Park District regulations, is included in full as part of this Appendix). Uses. The final decision of the on whether a use is permitted within the O- P Zone is made by the City of Renton Building and Zoning Department. Uses must be either listed in the zoning ordinance or be of similar character. Principal uses permitted in the O-P zone include: • Administrative and professional offices; • Medical and dental offices and clinics; • Financial offices such as banks, savings and loan institutions; • Schools and studios for art, crafts, photography, dance, and music; G -w� • Business and professional services; • Research and development; • Educational, cultural, and social activities; • Product servicing, wholesaling, warehousing and storage of articles, products or merchandise from previously prepared natural or synthetic materials or ferrous or alloyed metals; • Day care facilities; •. Hobby kennels (maximum of 8 adult dogs or cats); and • Motion picture theatres and similar recreational and entertainment facilities (Zoning Ordinance Section 4-718 1988). Accessory Uses, which are uses that are incidental to a permitted use, include: A-4 6 i • Parking garages; • Recreational facilities; • Retail sales of products of merchandise produced as a permitted use; g�- • Repair activities ordinarily associated with a permitted use; and • Storage of petroleum or natural gas of a certain capacity and placed underground. Conditional uses,which are uses normally prohibited within a zoning district but are allowed with a conditional use permit, within the O-P zone range from churches to on-site hazardous waste treatment and storage facilities. Conditionally permitted uses are allowed when judged by the City Hearings Examiner to be consistent with other existing and potential uses in the zone (Zoning Ordinance Section 4-748(A)). Residential uses are not permitted in this zone. Development Standards. Standards relevant to the proposal include: • Site Plan Approval-the City requires approved site plans for all developments within the O-P zone. • Setbacks: 60 feet or 20 percent of lot depth, which ever is less, from streets (if the street is a major or secondary arterial the setback shall be a minimum of 30 feet). 20 feet or 15 percent of the lot width, whichever is less, from any property line that does not abut a public street. - An increase of 1 foot for every 2,000 square feet larger than 25,000 for the footprint of a building adjacent to any building or structure (structure is defined as "any object constructed or installed by man") up to 100 feet abutting public streets, and 60 feet in other yards. Setback areas shall be unobstructed and unoccupied except for off- street parking and loading, driveways, entrance roads, lawn sprinklers, walkways, landscaping, ordinary and necessary utility service facilities, utility poles, lighting fixtures, identifying and direction signs and underground installations accessory to any permitted use. With approval by the City one of the side setbacks may be reduced of eliminated if the total width of both side setbacks is at least twice the width of the minimum setback specified above. A-5 } • Height - setbacks shall be increased one foot for each additional foot above jl 45 feet for buildings adjacent to all uses but other than residential. • Landscaping - a minimum landscaped setback of 20 feet is required from all public streets or rights of way. The City requires landscaping for all areas.not covered by buildings,structures, or paved surfaces. In addition,areas set aside 4 for future development, such as Tract A, may be hydroseeded. When parking lots are adjacent to one another, perimeter landscaping is not required. e ' r' f. A-6 I , 4-718: OFFICE PARK DISTRICT (0-P): (A) Purpose and Intent: The Office Park Zone (O-P) is established to provide areas appropriate for professional, administrative, and business offices, certain manufacturing activities, and supportive services in a campus-like setting. (Ord. 4186, 11-14-88) (B) Uses: In the Office Park Zone (O-P), the following and similar uses are permit- ted. The Building and Zoning Department may determine that any other use is similar in general character to the following specific uses and is in keeping with the intent of this Zone. Upon such administrative determination,the subject use shall become a principal, accessory or conditional use, whichever is ap- propriate. Unless indicated by the text, definitions of the uses listed in this Zone are consistent with the descriptions in the Standard Industrial Classification Manual. 1. Principal Uses: In the O-P Zone the following principal uses are permitted: a. Administrative and professional offices. b. Medical and dental offices and clinics. c. Financial offices such as banks, savings and loan institutions. d. Schools and studios for art, crafts, photography, dance and music. e. Business and professional services. f. Research and development. g. Educational, cultural, and social activities. (Ord. 3937, 9-16-85) h. Product servicing, wholesaling, warehousing and storage of articles, products or merchandise from previously prepared natural or synthetic materials, or ferrous or alloyed metals. (Ord. 4186, 11-14-88) 189 A-7 4-718 4-718 6,1) i. Day care facilities. (Ord. 3937, 9-16-85) j. Hobby Kennels: A maximum of eight (8) adult dogs or cats may be permitted after satisfaction of the requirements in Section 4-749(C)1,a. (Ord. 3955, 11-4-85) k. Motion picture theaters and similar recreational and entertainment facilities, subject to the provisions of Section 4-730(C)2. (Ord. 3980, 3-24-86) 2. Accessory Uses: In the 0-P Zone the following uses are allowed where incidental to a permitted use: a. Parking garages. b. Recreational facilities. c. Retail sales of products or merchandise produced as a permitted use. d. Repair activities ordinarily associated with a permitted use. e. Storage of petroleum or natural gas or any of their by-products, provided that the total storage capacity is less than ten thousand (10,000) gallons or other applicable unit of measure, and that storage of such products is placed underground. 3. Conditional Uses: In the 0-P Zone the following uses and their accessory uses may be allowed by conditional use permit as provided in Section 4-748 of the City Code: a. Churches. f . b. Heliports. 1; c. Personal, recreational, and repair services, and retail uses, subject to the standards of Section 4-718(C)2. d. Additional uses as identified in Section 4-748(D)1. (Ord. 3937, 9-16-85) e. On-site hazardous waste treatment and storage facilities. (Ord. 4186, 11-14-88) 4. Prohibited Uses: In the O-P Zone the following uses are prohibited: a. Residential uses. b. Automobile, motorcycle, truck, boat, mobile home, trailer, and recreational vehicle sales, rental, repair, service and storage activities, except repair and maintenance may be permitted if incidental to a permitted use. c. Any outdoor storage or display of materials or products. d. All other uses not included in Section 4-718(B)1 through 4-718(B)3. (Ord. 3937, 9-16-85) i M1 ; e. Off-site hazardous waste treatment and storage facilities. (Ord. 4186, 11-14-88) A-8 , , 189 4-718 4-718 (C) Development Standards: In the O-P Zone the following development standards shall apply, except as otherwise provided by this Section. 1. Site Plan Approval: Site plan approval shall be required for all developments within the O-P Zone. A building site plan shall be filed and approved in accordance with the City Code prior to issuance of any building permits. Each building or other development permit issued shall be in conformance with the approved site plan. 2. Standards for Retail and Selected Service Uses: For those service and retail uses identified in Section 4-718(B)3,c, the following standards shall apply: a. The design of structures, including signs, shall be generally consistent in character with surrounding uses. No drive-up windows or outside automobile service shall be permitted. b. No exterior display of merchandise shall be permitted. c. In order to avoid the negative impacts of strip commercial development: (1) Retail or selected service uses shall be developed as part of larger, planned commercial, office or industrial complexes having common architectural or landscaping themes. Such retail or service uses shall not stand alone and shall not occupy more than fifty percent (50%) of a jointly developed building complex. (2) Direct arterial access to individual uses shall occur only when alternative access to local or collector streets or consolidated access with adjacent uses is not feasible. (3) Roof signs shall be prohibited. Free-standing signs shall not exceed ten feet (10') in height and shall be located at least twenty feet (20') from any property line, except for entrance and exit signs. 3. Setbacks: a. Streets: All buildings and structures shall be located a minimum of sixty feet (60') or twenty percent (20%) of the lot depth, whichever is less, from any public street or highway property line. In any case, if the adjacent public street is a major or secondary arterial, the setback shall be at least thirty feet (30'). b. Other Yards: All buildings and structures shall be located a minimum of twenty feet (20') or fifteen percent (15%) of the lot width, whichever is less, from any property line which does not abut a public street or highway. c. Adjacent to Large Structures: The required yard setbacks adjacent to any building or structure with a building footprint greater than twenty five thousand (25,000) square feet shall be increased one foot (1')for each additional two thousand (2,000) square feet of building footprint, up to a maximum of one hundred feet (100') abutting public streets, and sixty feet (60') in other yards. 189 A-9 4-718 4-718 9 , �I C,3) d. Adjacent to Residential Lots: Whenever a proposed use in the 0-P Zone shares a common property line with a lot that is designated any residential use on both the City of Renton Comprehensive Plan and Zoning Map, the minimum setback contiguous to the common property line shall be fifty feet (50'). Whenever an adjacent lot contains a residential use and either the Comprehensive Plan or zoning designation or both is something other than residential, then the appropriate setback and landscaping adjacent to the residential lot shall be determined by site plan approval. A site plan decision to require more than the minimum setback and landscaping shall consider the long term viability of the residential use, the presence of other residential uses in the surrounding area, and such other indications of stability as owner- occupancy and housing condition. e. Use of Setback Areas: All required setback areas shall be unoccupied and unobstructed except for off-street parking and loading, driveways, entrance roads, lawn sprinklers, walkways, landscaping, ordinary and necessary utility service facilities, utility poles, lighting fixtures, identifying and direction signs and underground installations accessory to any permitted use. f. Flexible Setbacks: With site plan approval and subject to applicable Building and Fire Codes, one of the side setbacks (not adjacent to a public street or residential use, as defined in Section 4-718(C)3,d) may be reduced or eliminated if the total width of both side setbacks is at least twice the width of the minimum setback specified in Section 4-718(C)3,b above; and the rear setback not adjacent to a public street may be reduced or eliminated if the front setback is increased accordingly. The site plan decision shall be based on a finding that, with reduced setbacks, the architectural design, building orientation, circulation, noise and glare of the proposed project will be compatible with adjacent uses and with the purpose and intent of the 0-P Zone. 4. Height: Building heights in the 0-P Zone shall be established with consideration to adjacent land uses and shall be determined as follows: a. Adjacent to Single Family/Low Density Multi-Family Uses: No height limit shall be required provided that for each one foot (1') of building height there shall be provided one foot (1') of yard setback on the periphery of the site where the office park use is adjacent to a single family or low density multiple family use located on a lot designated Single Family or Low Density Multi-Family on the City of Renton Comprehensive Plan and Zoning Map. b. Adjacent to All Other Uses: No height limit shall be required provided that all required yard setbacks adjacent to such other uses shall be increased one foot (1')for each additional one foot (1')of height above forty five feet (45'). c. These setback/height requirements cannot be modified by application under the P.U.D. process. 5. Landscaping: a. There shall be a minimum landscaped setback of twenty feet (20') from all public street or highway rights of way. A-10 1285 4-718 4-718 C,5) b. There shall be a minimum landscaped setback of ten feet (10') or one-half (Y:) the required setback, whichever is less, from all other property lines. c. A minimum of twenty percent (20%) of the site shall be retained in landscaped open space. A maximum of one-half (Y2) of this requirement may be on the roofs of structures, provided employees and the public have access to the area. A maximum of seventy five percent (75%) of this requirement may be within the required perimeter landscaping. The twenty percent (20%) , minimum landscaping requirement may not be reduced if a site is developed as a P.U.D. d. All areas not covered by buildings, structures or paved surfaces shall be landscaped. Areas set aside for future development on a lot may be hydroseeded. e. Where parking lots are adjacent to one another, perimeter landscaping shall not be required. f. Any wall surface greater than thirty feet (30') in width lacking windows or doors shall be softened by landscaping or architectural features, such as change of texture or wall modulation. Such landscaping shall include trees over six feet (6') in height placed no more than thirty feet (30') on center or in clusters. g. With site plan approval, the perimeter landscaping setbacks required by Section 4-718(C)5,a and b above may be reduced in width up to fifty percent (50%) if the equivalent square footage of landscaping is provided elsewhere within the site. Site plan approval shall be based on a findirig that the alternative landscaping arrangement provides buffering and site amenities equal to or better than that which would be achieved by strict application of the Code. The relocated landscaping shall not be located within the rear setback of the site. 6. Refuse: No refuse, trash, rubbish or other waste material shall be dumped, placed or allowed to remain outside a permanent building, except in nonflammable, covered containers or dumpsters, which shall be screened by fences or landscaping. No refuse shall be stacked higher than the screening fence or landscaping. 7. Parking/Circulation: Parking and circulation standards required shall be as follows: a. Access: The principal access shall be from an arterial or collector street and shall be oriented to the least traveled street whenever two (2) or more such arterials or collectors abut the site. b. Parking/Circulation: Parking and circulation areas along a common lot line with a residential use located on a lot designated as a residential use on both the City of Renton Comprehensive Plan and Zoning Map shall be allowed only if a ten foot (10') wide sight-obscuring landscaping strip and a six foot (6') high solid fence are provided along the common boundary line. , c. Parking and Loading: (1) See Chapter 22, Title IV of the City Code. 1285 A-11 4-718 4-718 Ir C,7,c) (2) All loading docks and roll-up doors shall be located at the rear of buildings or screened so that they are not visible from any point along the abutting public right of way. (3) At no time shall any part of a vehicle be allowed to extend into a it public right of way while the vehicle is being loaded or unloaded. All loading and unloading maneuvers shall be conducted on private property. 8. Environmental Performance Standards: The following minimum standards hh shall be met by all activities within the 0-P Zone. For all activities which may produce objectionable or otherwise prohibited conditions, the property owner or lessee shall furnish design specifications or other scientific evidence of compliance with these standards. a. Noise: See Title VIII, Chapter 11, Noise Level Regulations. b. Smoke: (1) Visible grey smoke shall not be emitted from any source in a greater density of grey than that described as No. 1 on Ringlemann Chart. ti (2) The provisions applicable to visible grey smoke shall also apply to visible smoke of a different color but with an equivalent ap parent pparent opacity. c. Dust, Dirt, Fly Ash or Airborne Solids: No observable dust, dirt, fly ash or airborne solids shall be emitted. d. Odorous Gases and Matter: No odorous gases or matter in a quantity sufficient to evoke a response from the average person beyond the exterior property lines shall be emitted. e. Toxic Gases and Matter: No emissions of toxic gases or matter shall be permitted. f. Vibration: No vibration shall be permitted to exceed 0.003 of one inch Cr) displacement or 0.03 (g) peak acceleration, whichever is greater, as measured at any point outside the property lines of the lot or site. This shall apply in the frequency range of zero to five thousand (0 - 5,000) cycles per second. Shock absorbers or similar mounting shall be allowed to permit !, compliance with this specification. g. Glare and Heat: any permitted to be �; ' (1) No glare and heat from source shall be unreasonably objectionable beyond the exterior property lines of a lot l' - or site. (2) All exterior or wall mounted lighting fixtures shall be directed away from public streets or rights of way. Exterior lighting fixtures shall be equipped with hoods or reflectors such that,direct light rays extend no more than ten feet (10') beyond the nearest property line. 9. Signs: See Chapter 19, Title IV of the City Code. (Ord. 3937, 9-16-85) A-12 1285 4-719 4-719 4-719: AIRPORT ZONING: (A) Zones: In order to regulate the use of property in the vicinity of the airport, all of the land within two (2) miles south and one mile east and west of, or that part of the area that is within the City limits of Renton, Washington, whichever is nearest the boundaries of the airport, is hereby divided into airport approach, transition and turning zones. The boundaries thereof are shown on the Renton Airport Approach Plan numbered No. 1, dated March 1, 1956, which Plan is made a part hereof. (B) Height Limits: Except as otherwise provided in this Code, no structure or tree shall be erected, altered, allowed to grow or be maintained in any airport approach zone or airport turning zone to a height in excess of the height limit herein established for such zone. For the purposes of this regulation, the following height limits are hereby established for each of the zones in question: (Ord. 1542, 4-17-56) 1. Approach Zones (Shaded Dark Red on Plan): Height limitation to be one foot (1') in height for each forty feet (40') lateral separation from a line which is two hundred feet (200') south from the "Displaced Threshold" at Station No. 10+00 as shown on revised Renton Airport Approach Plan, No. 1--R, dated May 17, 1960, which Approach Plan is filed herewith and by this reference is made a part hereof. (Ord. 1829, 5-17-60) (See following page for continuation of Section 4-719[B1) . i A-13 CITY OF RENTON, WASHINGTON ORDINANCE NO. 4219 AN ORDINANCE OF THE CITY OF RENTON, WASHINGTON, AMENDING TITLE IV (BUILDING REGULATIONS) OF ORDINANCE NO. 1628 ENTITLED "CODE OF GENERAL ORDINANCES OF THE CITY OF RENTON" BY ADDING ANEW CHAPTER ENTITLED LAND CLEARING AND TREE CUTTING ORDINANCE AND ESTABLISHING PENALTIES. THE CITY COUNCIL OF THE CITY OF RENTON, WASHINGTON, DO ORDAIN AS FOLLOWS : SECTION I . Title IV (Building Regulations ) of Ordinance No . 1628 entitled "Code of General Ordinances of the City of Renton" is hereby amended by adding the following chapter: CHAPTER 36 LAND CLEARING AND TREE CUTTING ORDINANCE 4-3601: TITLE This ordinance shall be hereinafter known as the "Renton Land - - Clearing and Tree Cutting Ordinance, may be cited as such, will be hereinafter referred to as "this ordinance, " and shall constitute Chapter 36, Title IV. 4-3602: PURPOSE This Ordinance provides regulations for the clearing of land and the protection and preservation of trees and associated significant vegetation for the following purposes : A. To promote the public health, safety and general welfare of the citizens of Renton; B. To implement the policies of the State Environmental Policy Act of 1971 as revised in 1984; C. To preserve and enhance the City's physical and aesthetic character by preventing indiscriminate removal or destruction of trees and ground cover; A 14 ORDINANCE NO. 4219 D. To implement and further the goals and policies of the City's Comprehensive Plan for the environment, open space, wildlife habitat, vegetation, resources, surface drainage, watersheds, and economics; E. To ensure prompt development, restoration and replanting, and effective erosion fi control of property during and after land clearing; F. To promote land development practices that result in a minimal adverse disturbance to existing vegetation and soils within the City; G. To minimize surface water and groundwater runoff and diversion; 4 - H. To aid in the stabilization of soil, and to minimize erosion and sedimentation; tl I. To minimize the need for additional storm drainage facilities caused by the hi destabilization of soils; J. To retain clusters of trees for the abatement of noise and wind protection; K. To acknowledge that trees and ground cover reduce air pollution by producing pure oxygen from carbon dioxide; p' II ' L. To preserve and enhance wildlife and habitat including streams, riparian corridors, wetlands and groves of trees; M. To promote building and site planning practices that are consistent with the City's natural topographical and vegetational features while at the same time recognizing that certain factors such as condition (e.g. disease, danger of falling, etc.), proximity to existing and proposed structures and improvements, interference with utility services, protection of scenic views, and the realization of a reasonable enjoyment of property may require the removal of certain trees and ground cover; N. To promote the reasonable development of land in the City of Renton. 4-3603 : DEFINITIONS A. CALIPER shall mean the diameter of any tree trunk as measured at a height of four and a half (4 1/2) feet above the ground on the upslope side of the tree. f B. CREEK means those areas where surface waters ,flow sufficiently to produce a defined channel or bed. A defined channel or bed is indicated by hydraulically sorted sediments or the removal of vegetative litter or loosely rooted vegetation by the action of moving water. The channel or bed need not contain water year-round. This definition is not meant to include storm water runoff devices or other entirely artificial watercourses unless they are used to store and/or convey pass-through stream flows naturally occurring prior to construction of such devices. C. DEVELOPED LOT shall mean a lot or parcel of land upon which a structure(s) is located, which cannot be more intensively developed pursuant to the City Zoning Code, and jl which cannot be further subdivided pursuant to City Subdivision ordinance. D. DRIP LINE of a tree shall be described by a line projected to the ground delineating the outermost extent of foliage in all directions. A-15 ORDINANCE NO. 4219 E. ENHANCEMENT ACTIVITIES shall mean removal of noxious or intrusive species, plantings of appropriate native species and/or removal of diseased or decaying trees which pose a clear and imminent threat to life or property. Enhancement activities shall not involve the use of mechanical equipment. Enhancement activities may include the removal of pests which pose a clear danger to public health provided that such danger is certified by the King County Department of Public Health. F. GROUND COVER shall mean small plants such as salal, ivy, ferns, mosses, grasses or other types of vegetation which normally cover the ground and includes trees of less than 6 inches caliper. ti G. GROUND COVER MANAGEMENT shall mean the mowing or cutting of ground cover in order to create an orderly appearing property so lone as such activities do not disturb the root structures of the plants. Ground cover management shall include the removal of vegetative debris from the property. H. LAND CLEARING means the act of removing or destroying trees or ground cover including grubbing of stumps and root mat from any undeveloped lot. partially developed lot. developed lot, public lands or public right-of-way. I. LAND DEVELOPMENT PERMIT means a preliminary or final plat for a single family residential project: a building permit; site plan; or preliminary or final planned unit development plan. J. LAKES are natural or artificial bodies of water of two or more acres and/or where the deepest part of the basin at low water exceeds two meters (6.6 feet). Artificial bodies of water with a recirculation system approved by the Public Works Department are not included in this definition. K. MECHANICAL EQUIPMENT shall include all motorized equipment used for earth moving, trenching, excavation, gardening, landscaping, and general property maintenance exceeding twelve (12) horsepower in size. L. NATIVE GROWTH PROTECTION EASEMENT is. a restrictive area where all native. pre- development vegetation shall not be disturbed or removed EXCEPT for removal pursuant to an enhancement program approved pursuant to this Chapter. The purpose of an Easement is to protect steep slopes, slopes with erosion, landslide and seismic hazards. creeks, wetlands and/or riparian corridors. This Easement shall be defined during the review process pursuant to Section 4-3613, and shown on the recorded plat or short plat. M. PARTIALLY DFVELOPED LOT shall mean a lot or parcel of land upon which a structure is located and which is of sufficient area so as to be capable of accommodating increased development pursuant to the Renton Zoning Code: or which may be subdivided in accordance with the City of Renton Subdivision Ordinance: N. PERSON shall mean any person, individual, public or private corporation. firm. association, joint venture, partnership, owner, lessee, tenant. or any other entity whatsoever or any combination of such. jointly or severally. O. REMOVAI. is the actual removal or causing the effective removal through damaging. i t poisoning. root destruction or other direct or indirect action% resulting in the death of a tree or ground cover. A-16 ORDINANCE NO. 4219 P. ROUTINE VEGETATION MANAGEMENT shall mean tree trimming. tree topping and ground cover management which is undertaken by a person in connection with the normal maintenance and repair of property. O. TREE shall mean any living woody plant characterized by one main stem or trunk and many branches and having a caliper of six inches or greater, or a multi-stemmed trunk system with a definitely formed crown. R. TREE CUTTING shall mean the actual removal of the above ground. plant material of a tree through chemical, manual or mechanical methods. S. TREE TRIMMING shall mean the pruning or removal of limbs provided that the main stem is not severed and no more than 40% of the live crown is removed. T. TREE TOPPING shall mean the severing of the main stem of the tree in order to reduce the overall height of the tree provided that no more than 40% of the live crown shall be removed during any topping. U. UNDEVELOPED LOT shall mean a platted lot or parcel of land upon which no structure exists. it V. WETLANDS are those areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support and that under normal circumstances do support, a prevalence of vegetation typically adapted to life in saturated soil fonditions. Wetlands generally include swamps, marshes, bogs and similar areas. o , 4-3604 : ADMINISTERING AUTHORITY The City's Director of Community Development, or his duly authorized representative, is hereby authorized and directed to enforce all the provisions of this Ordinance. 4-3605 : GENERAL PROVISIONS A. There shall be no tree cutting or land clearing on any site for the sake of preparing that site for future development unless a land development permit for the site has been approved by the City. B. Tree cutting is permitted as follows except as provided in Section D below: 1. On a developed lot; 4, 2. On a partially developed or undeveloped lot provided that: a. No more than three trees are removed in any twelve month period from a property under 35.000 square feet in size: and b. No more than six trees are removed in any twelve month period from a property over 35.000 square feet in size. A 17 ORDINANCE NO. 4 21 9 C. Land clearing in conformance with the provisions of Sections B and D is permitted on a developed. partially developed or undeveloped lot for purposes of landscaping or gardening provided that no mechanical equipment is used. D. No tree cutting or land clearing is permitted within 25 feet of any shoreline area. within 25 feet of the ordinary high water mark of creeks, in a wetland area, or on parcels where the predominant slope or individual slope is in excess of forty percent except enhancement activities. E. Any person who performs routine vegetation management on undeveloped property in the City must obtain a Routine Vegetation Management permit prior to performing such work. F. Any person who uses mechanical equipment for routine vegetation management, land clearing, tree cutting, landscaping, or gardening on developed, partially developed or undeveloped property must obtain a routine vegetation management permit prior to performing such work. G. No provision of this ordinance shall be construed to eliminate the requirement of permits for the purpose of developing the property with substantial permanent improvements such as roads, driveways, utilities, or buildings. 4-3606: REGULATIONS FOR THE LAND CLEARING AND TREE CUTTING AND THE DEVELOPMENT OF PROPERTY A. When a development permit is submitted to the City of Renton it shall be accompanied by a land clearing and tree cutting plan. This plan shall be reviewed as part of the environmental review process pursuant to the State Environmental Policy Act and Title IV, Chapter 7, Section 2800 of the City Code. B. All land clearing and tree cutting activities shall conform to the performance standards set forth in Section 4-3613 unless otherwise recommended in an approved soil engineering, engineering geology, hydrology or forest management plan and where the alternate procedures will be equal to or superior in achieving the policies of this Chapter. C. All land clearing and tree cutting activities shall be conditioned by the City to ensure that the following performance standards are met. 1. The land clearing and tree cutting will not create or contribute to landslides. accelerated soil creep, settlement and subsidence or hazards associated with strong ground motion and soil liquefaction. 2. The land clearing and tree cutting will not create or significantly contribute to flooding, erosion, or increased turbidity, siltation or other form of pollution in a watercourse: 3. Land clearing and tree cutting will be undertaken in such a manner as to preserve and enhance the City's aesthetic character and maintain visual screening and buffering. r I A-18 ORDINANCE NO. 4219 4. Land clearing and tree cutting shall be conducted so as to expose the smallest practical area of soil to erosion for the least possible time, consistent with an approved build-out schedule. 5. Land clearing and tree cutting shall be conducted so as to preserve habitat consistent with reasonable use of the property. 4-3607: EXEMPTIONS The following shall be exempt from the provisions of this chapter: A. Removal of trees and/or ground cover by the Public Works Department, Parks Department, Fire Department and/or public or private utility in emergency situations involving immediate danger to life or property, substantial fire hazards, or interruption of services provided by a utility; B. Removal of dead or terminally diseased or damaged ground cover or trees which have been certified as such by a forester, landscape architect or the City prior to their removal. C. Maintenance activities including routine vegetation management and essential tree removal for public and private utilities, road rights of way and easements, and parks. y D. Installation of distribution lines by public and private utilities provided that such activities are categorically exempt from the provisions of the State Environmental Policy Act and Title IV, Section 2800 of City Code. 4-3608: ROUTINE VEGETATION MANAGEMENT PERMIT REVIEW PROCESS , Permits for routine vegetation management shall be processed in accordance with the purposes and criteria of this section as . follows : A. An application for a Routine Vegetation Management Permit shall be submitted to the Community Development Department together with any necessary fees. B. The permit shall be reviewed administratively within a reasonable period of time. C. Any individual or party of record who is adversely affected by such a decision may appeal the decision -to the City's Hearing Examiner pursuant to the procedures established in Title IV, Chapter 30. • A-19 ORDINANCE NO. 4219 4-3609 : APPLICATION FOR ROUTINE VEGETATION MANAGEMENT PERMIT A Routine Vegetation Management Permit Application shall set forth the following information: A. Name, address and telephone number of the applicant; name and telephone number of the contact person, if any; B. A time schedule for all mechanical equipment activities or routine vegetation management activities. C. A plan for the specific work to be performed. D. For routine vegetation management on undeveloped properties, the application shall include: 1. Standards and criteria to be used for routine tree trimming and tree topping; 2. Standards and criteria to be used for ground cover management; and 3. Standards and criteria to be used in determining the location for use of chemicals including insecticides and herbicides. E. For use of mechanical equipment the application shall include: 1. The type of equipment to be used. 2. A description of the specific work to be accomplished using the equipment. 3. The measures proposed to protect the site and adjacent properties from the potential adverse impacts of the proposed work and equipment operation. 4-3610: REGULATIONS FOR ROUTINE VEGETATION MANAGEMENT A. Any routine vegetation management on undeveloped property requires a permit pursuant to this Chapter. Permitted activities may include the use of mechanized equipment except as provided in Sections C and D below. B. The use of mechanical equipment for routine vegetation management, land clearing, tree cutting, landscaping, or gardening on developed, partially developed or undeveloped property requires a permit pursuant to this Chapter. C. For all properties, no land clearing, tree cutting, or ground cover management activities except enhancement activities are permitted in areas with slopes over 40 percent; slopes over 25 % with class II or class III landslide hazards, and slopes over 25% with class II or class III erosion hazards, as identified by the King County Soils Survey, King County Sensitive Areas Map Folio or the City of Renton Environmentally Sensitive Areas Maps. D. For all properties, no land clearing, tree cutting or ground cover management activities except enhancement activities are permitted in wetlands including a minimum buffer A-20 ORDINANCE NO. 4219 area of 25 feet, riparian corridors including a minimum buffer area of 25 feet from the high water mark of the creek or stream, and in the 200 foot state shoreline area. 4-3611: ROUTINE VEGETATION MANAGEMENT PERMIT CONDITIONS The Routine Vegetation Management permit may be denied or conditioned by the City to restrict the timing and extent of activities in order to further the intent of this Chapter including: A. Preserve and enhance the City's aesthetic character and maintain visual screening and buffering. B. Preserve habitat to the greatest extent feasible. C. Prevent landslides, accelerated soil creep, settlement and subsidence hazards. D. Minimize the potential for flooding, erosion, or increased turbidity, siltation or other form of pollution in a watercourse. 4-3612 : TIME LIMITS FOR PERMITS Any permit for Routine Vegetation Management shall be valid for one (1 ) year from the date of issuance. An extension may be granted by the Community Development Department for a period of one (1) year upon application by the property owner or manager. Application for , such an extension must be made at least 30 days in advance of the expiration of the original permit and shall include a statement of justification for the extension. 4-3613 : PERFORMANCE STANDARDS FOR LAND DEVELOPMENT PERMITS A. There shall be no clear cutting of trees on a site for the sake of preparing that site for future development. Trees may be removed pursuant to a development permit which has been approved by the City. B. Trees shall be retained to the maximum extent feasible on the property where they are growing. 1. Where it is not practicable to retain all trees on site due to a proposed development, a plot plan shall be submitted identifying those trees which are proposed for removal. The City may require a modification of the land clearing A-21 1 ORDINANCE NO. 4219 and tree cutting plan or the associated land development plan to ensure the retention of the maximum number of trees. 2. The plot plan shall identify the location of all areas proposed to be cleared including building sites, right-of-ways, utility lines, and easements. Clearing should not occur outside of these areas or more than 15 feet from the foundation line of proposed buildings. 3. No land clearing, ground cover management or tree cutting activities are permitted in a Native Growth Protection Easement except enhancement activities or the installation of essential roads and utilities where no other feasible alternative exists pursuant to an approved development plan. C. The City may restrict the timing of the land clearing and tree cutting activities to 1 i specific dates and/or seasons when such restrictions are necessary for the public health, safety and welfare, or for the protection of the environment, or to further the purposes of this ordinance. D. Native Growth Protection Easements may be established through the subdivision • process in environmentally sensitive areas including but not limited to the following areas: 1. A buffer area from the annual high water mark of creeks, streams, lakes and other shoreline areas or from the top of the bank of same, whichever provides good resource protection. 2. Areas in which the average slope is greater than 40 percent. 3. Wetlands. 4. Any other area which is determined through the environmental review process to include significant vegetation or other valuable resources and which should be protected. E. No ground cover or trees which are within a minimum of 25 feet of the annual high water mark of creeks, streams, lakes, and other shoreline areas or within 15 feet of the top of the bank of same should be removed, nor should any mechanical equipment operate in such areas except for the development of public parks and trail systems, and enhancement activities. F. The City may require and/or allow the applicant to relocate or replace trees, provide interim erosion control, hydroseed exposed soils, or other similar conditions which would implement the intent of this Chapter. • G. No land clearing, ground cover management or tree cutting activities except enhancement activities shall be conducted in a wetland, except for the installation of roads and utilities where no feasible alternative exists pursuant to an approved development plan. H. When tree cutting or land clearing will occur pursuant to a building permit, protection measures should apply for all trees which are to be retained in areas immediately subject to construction. These requirements may be waived individually or severally by the City if the developer demonstrates them to be inapplicable to the specific on- A-22 ORDINANCE NO. 4219 site conditions or if the intent of the regulations will be implemented by another Y means with the same result. Where the dripline of a tree overlaps a construction line, this shall be indicated on the survey and the following tree protection measures should be employed: 1. The applicant may not fill, excavate, stack or store any equipment, or compact the earth in any way within the area defined by the dripline of any tree to be retained. 2. The applicant shall erect and maintain rope barriers or place bales of hay on the drip line to protect roots. In addition, the applicant shall provide supervision whenever equipment or trucks are moving near trees. 3. If the grade level adjoining to a tree to be retained is to be raised, the applicant shall construct a dry rock wall or rock well around the tree. The diameter of this wall or well must be equal to the tree's drip line. 4. The applicant may not install impervious surface material within the area defined by the dripline of any tree to be retained. S. The grade level around any tree to be retained may not be lowered within the r I greater of the following areas: (1) the area defined by the dripline of the tree, or (2) an area around the tree equal to one foot in diameter for each one-inch of tree caliper. j 6. The applicant shall prune branches and roots, fertilize, and water as appropriate for any trees and ground cover which are to be retained. 4-3614: VARIANCE PROCEDURES The Hearing 'Examiner shall have the . authority to, grant variances from the provisions of this Ordinance pursuant to Title IV Section 722, and Title IV Chapter 30 . 4-3615 : - VIOLATIONS AND PENALTIES A. A violation of any of the provisions of this chapter shall constitute a misdemeanor. It shall be a separate offense for each and every day or portion thereof during which any violation of any of the provisions of this chapter is committed. B. Any person who shall violate any provisions of this ordinance shall be subject, upon conviction in court, to a fine not to exceed S1,000 per day and/or S500 per tree. In a prosecution under this ordinance, each tree removed, damaged or destroyed will constitute a separate offense. ' II 4-3616: PUBLIC AND PRIVATE REDRESS A. Any person who violates any provision of this Chapter or of a permit issued pursuant thereto shall be liable for all damages to public or private property arising from such A-23 ORDINANCE NO. 4219 y I' violation, including the cost of restoring the affected area to its condition prior to such violation. B. Restoration shall include the replacement of all improperly removed ground cover with species similar to those which were removed or other approved species such that the biological and habitat values will be replaced; and C. For each tree which was improperly cut and/or removed, replacement planting of a tree of equal size, quality and specie or up to three (3) trees of the same species in the immediate vicinity of the tree(s) which was removed. The replacement trees will be of sufficient caliper to adequately replace the lost trees(s) or a minimum of 3 inches in caliper. D. Restoration shall include installation and maintenance of interim and emergency erosion control measures until such time as the restored ground cover and trees reach sufficient maturation to function in compliance with the performance standards identified in Section 4-3606. E. For any parcel on which trees and/or ground cover are improperly removed and subject to penalties under this Chapter, the City shall stop work on any existing permits and halt the issuance of any or all future permits or approvals until the property is fully r restored in compliance with this Chapter and all penalties are paid. SECTION II. This ordinance shall be effective upon its passage, approval, and thirty days after publication. PASSED BY THE CITY COUNCIL this 5th day of June 1989 . r ; 1 � i' Maxine E. Motor, City Clerk APPROVED BY THE MAYOR this 5th day of June , 1989 . ��. Edr1 Clymer,;, Mayor` Approve as to form: Lawrence J. Wa en, City Attorney Date of Publication: Published in summary June 9, 1989 ORD. 90:5-11-89 :as . A-24 APPENDIX B LIFE HISTORY AND EFFECTS OF HUMAN DISTURBANCE ON GREAT BLUE HERON ROOKERIES TABLE OF CONTENTS Page Introduction B-1 Proposed Project B-1 Description of Study Area B-1 Black River Great Blue Heron Nesting Rookery B-2 Study Approach B-4 Life History of the Great Blue Heron B-5 Ecological Overview B-5 Nesting Requirements B-5 Effects of Human Disturbance B-6 Peasley Canyon Rookery, Auburn, WA B-7 Spencer Property, N.E. 95th Street, Redmond, WA B-8 Yarrow Bay, Kirkland, WA B-8 Lake Sammamish State Park, Issaquah, WA B-8 Ross Island, Portland, OR B-9 Pigeon Point, West Seattle, WA B-9 West Delta Park, Portland, OR B-9 Garabaldi, OR B-10 Summary of Findings - Effects of Human Disturbance B-10 Management Guidelines B-11 Blackriver Corporate Park - Tract A Site B-12 Blackriver Corporate Park - Tract B (Phase VII) Site B-13 References B-15 Literature Cited B-15 Personal Communications B-16 i - LIST OF FIGURES Following Figure Page 1 Location Map Black River Great Blue Heron Rookery B-1 2 Site Plan, Tract B (Phase VII) 7-Story Office, Blackriver Corporate Park, Renton, WA B-1 3 Landscape Plan, Tract B (Phase VII) 7-Story Office, Blackriver Corporate Park B-1 4 Recommended Setbacks and Heron Flight Zone; Tracts A and B, Blackriver Corporate Park B-12 11 LIST OF TABLES I, Table Page B-1 Characteristics of Select Great Blue Heron Rookeries and Adjacent Human Activities in Washington and Oregon B-3 I; • I r , I e - iii - LIFE HISTORY AND EFFECTS OF HUMAN DISTURBANCE ON GREAT BLUE HERON ROOKERIES Introduction The First City Developments Corporation(FCDC)proposes to construct three office buildings ranging from three to seven stories on 15.7 acres known as "Tract B" (Phase VII), and three office buildings ranging from one to four stories on 12.71 acres of"Tract A"which lies adjacent to the Springbrook Creek, Renton, Washington (Figure 1). In November, 1988, the City of Renton made a Determination of Significance on FCDC's application for Site Plan Review and Shorelines Substantial Development Permit for Tract B (Phase VII), stating that a SEPA EIS was necessary to address, among other issues, the effect of the project on "flora and fauna, particularly in regard to the heron and other waterfowl in the area and sources of food for these species. . ., light, glare, and noise as it potentially affects wildlife species (including heron). . ." This technical report presents an overview of the proposed project and a description of the study area, defines the study approach, and provides a brief account of the life requirements of the great blue heron. Lastly, this report includes an analysis of effects of human disturbance on herons and guidelines designed to minimize future adverse impacts. Proposed Project The proposed project will include the construction of 286,200 square feet of office space on 15.7 acres known as Tract B, and 183,600 square feet on 12.7 acres on the adjacent Tract A. Construction of the three buildings on each tract is to be phased over a four year period beginning in 1990. Included with building construction at both sites will be parking and site landscaping. Figures 2 and 3 show the proposed site plans for Tracts A and B. Refer to Chapter 2 of the EIS for a more detailed description of the proposed action and project alternatives. Description of Study Area The project study area is located within the City of Renton corporate limits, approximately one half mile north of Interstate 405 (see Figure 1). Land east of the site is industrial and office park. Land south and west of the site supports Metro's Renton wastewater treatment facilities, office parks, and light industry. The area north of the site includes the Springbrook Creek and ponds, and riparian forest. Tract A is open and treeless, having been previously filled from material dredged from the Springbrook ponds. Upland grasses and Scot's broom dominate the site. As a condition to a grade and fill permit approved by the City for the site, FCDC planted several B-1 i 2)F9 C G9, EMPIRE WAY 9,1, v �, .. RENTON SW 7TH 5 BLACKRIVER` WPY CORPORATE • til Go•°' p 405 TO SEA-TAC AIRPORT 4 MILES 0 LONGACRES SOUTHCENTER C O G m D cn 7 -1 m D D VALLEY m m GENERAL HOSPITAL S180TH /_uII_lI......_..l Figure 1. Location Map Black River Great Blue Heron Rookery. LEGAL DESCRIPTION .FN IL* HE H ' _ ...A,J I, • Mirage Mich— -,,, —_ 1,011.0•••11.•od........of••••••......Soo......••ea..t• '� P-1 Charnel D•1•nt Own one \` ``y` , ', ~; - ` i VICINITY MAP •� _ - �� _ _ l_ ._�/^ rya !.f4 ti __ `Y e' A110• �/i I ...�=b ao�•�n.��. J. ..L..:� -•w�tit'. ` %Ai..? lb. .-'� i i y _ Y 1 1=71 :-""' r .�•.l-r.GY• •.w K I 1 1 1t '�• I' �i a Y/ �^ =ii 1 _ I, I± I.IIa MT[IIYYIl1' ' n ,i t 1...: I .. r• ` rc rr.rc•++ I/ /, �i�:A. 1 I I F 'i 1 =• HERON EXHIBIT I. 7 Mort•• I /.. �;:'...; ,,.moo - „•4.4/, -." IIIA ., �-- }/ ✓^ i is I` / ` 1� 1(11'1 lam, .....�•, (/.�.. _ I.eo.•neo.ol. �^ O •, •/;�/ '•.1�%yw lJ • Q ' • ti 111 v `r\VVYii ix.... .••••••••••••••..C. -... ."•-•• ..kt)\ •••••••..., •••........ •••....... .......... •••Mee./ I t•bing P•••••I i, .,..., amoomma \ / L, 1.1 .1 1(2 ......._. ........._ .......3/4_ ,Lx., / ��/ �I •+`,� � _( ` - '' era:%^;,�— f.7•.p pia......-••r `• i%��+ (( •. • f: XI i Z ff .-7:17:: ... • \ 1 •I• •CZ Z7�- tea► • '/ �' ,• •,•-•41... ...•••to,.1•1:;-- .... Ilittg • ..�. .:�;.--�•. ) tt/ !7 `! �yt- J11 .'�. • 'r' +. I �I , p •. ♦ i . • . 's •awwr '"w • i o•..,w,.i•i,•. .G. '' ihi ..C.0 , .w.s.► s..� •IX..... f•---../........... A a.,,,, •yr-•*4.,.......s,„ .."-•......1 ..: ... 1/ -.P.m,fv.,1 TABULATION .\ •t;„i" 4117 i/ Site Area :689,912 S.F. "• „• v ".— Building Area :285,000 S.F. ""•+.�— ~-�: ..gd•-:�, ' '•.i/.��►. Gross Coverage :41.71 1 ;• ,1•„�,<� o-'/r'\, Figure 2. Site Coverage :8.2X I ? .,,.••''.`,'••.' 1•4.-.. _ • i Site Plan,Tract B (Phase VII) Parking Standard 11,052 Stale :_.,,• 2`• In, 7-Story Office,Blackriver Corporate Park, Compact =350 Stalls ==sL - Renton,WA :1,425 Stalls Source: LPN,Inc.1988 :1/200 SF. \ 1 - - -- - - - - - --- -- - -- -- - — - - - ..► - • 1:77 t 0... ri z 'k, I/I Drainage DReh ,' L h ,�. . 1 I` '�sy e ll ! — *j - ram/ ® P-1 Channel i��( ► •��- a� �° Detention Pond 1 1 _ 1.." ��.f� r /Ati.t „® 4ICI 1. aril •rY�•I.1 t�.-Y. 4.4. Ion `y.. �yt..0`�V.t.tH .4 7u,4 Y..w••!-t� s. ` . /r��-A M`' . �"' �C co 0 • :‘.,.... ., \j.,,);i,.•..,1,:l'.,.,1, .)C r. ar f..=Nt,"..,..•..4r9-•- N'SJ-."....0O. { /� ae� awes alas ��•• max.m 1 {> l ri� .e o•.....o--4Y... ® i._.e Ie ; ::•-:.'i.,.-.:.•r,,/;/('.,A:/:.s.e4l,.7‘L.1.,,',—.,I/G,*0 0•5.20.',••, 8-;k Jtelr '.,.t,,,--I..:r,/,.I.a./ i..'.:-n..' ._,„_"4.-',T_3.:"-,3-.-,1-S/l-a--i--% iwi .m..4 Q4.•i,4/ @7 c1-„,l.-.'1„m\-,0:,,,1);,, *./. 6,;V•4'-.i •!'4•l. .*9.-P.s.1e;,3*<4bI-•.- .3A•. .4‘V0"')•,7 3.-..irt•",1 1'1.'',4-,?4.s50°6)k',4 F"i,4r,..e%(.1L-I1r 01 I % ® .ram E �I ' 1 :„i•F {r I; ><enrw. ° Future Building am i 1_ 1 e(-.3.4.-14•I-4D4 l..i. - .r...w� •.,� 1L 40 •.6_..@f.. ,;14'0.9c \ ;i ...�. . Flag Plaza ..�R . �`� / ' 0/ `.•••• Jr `+ �fw ,� 1 \ 25; - ExistingQ_ J r// 1 alaw. tV e0 , 0 PhaseIII � J . ''. �'1 (poi ':r' � i l '• „•, '` •/ 1f l �y y'' �.` , ® Fuure Perking T �y r• ,",A \ aryl. � \ F/ . , py �% ) . / .'/ �!.( Aia) Structure i ha L ��.. ..v.. raw v 4a...,. CkJ •(.. 0 a \....W', -____ \ \ ., . ‘.„4,. ... 4 ___4 a -07i). .___":-....... ....„...... 2.,.,1 e,. afp, i..., ."-- es o _ ........ , ( % 7 e '.� *40 ) 1 \ `� .� `s r .- ��� • P-1 Channel ` 4, " • ' isic • ' `ti)• �, Figure 3. . �i' i Landscape Plan,Tract B (Phase VII) ...0°,•4" " TM"'•" ""'•""•"" .� 7 Story Office,Blackriver Corporate Park, ` • e' ..:�.,..,.:.;.` "._.w • r - ' , 40Renton,WA •�"•'"4►•"'•`,,,,,............. 'w"•w• "" • '•\ \ Source: LPN,Inc.1988 ....NI. __. yr, •.I. ' ....Mail,. .4L ....•a.w. 044..4411.... I rows of poplar trees within a 200-foot buffer zone bordering the Springbrook ponds. These trees are approximately 10 to 12 feet in height. Tract B is vegetated with grasses, alder, Scot's broom and a remnant riparian forest of cottonwood trees, a number of them greater than 48 inches in diameter. The northeast portion of the site is a remnant of the historic Black River channel (Figure 2). Black River Great Blue Heron Nesting Rookery The great blue heron rookery, known locally as the Black River heron rookery, is located in cottonwood trees on an island formed when the P-1 Ponds were constructed from March to August, 1984. The rookery is located approximately 350 feet from the northern boundary of Tract B and 500 feet from the northeastern boundary Tract A. Based on field observations by Rex Van Wormer, wildlife biologist, during the 1989 nesting season, 25 nest structures were located in three 48 to 54-inch diameter, 140 to 150- foot tall black cottonwood trees. During field surveys conducted by Van Wormer on June 10, 1989, 17 of the nests were observed to be occupied and eight nests unoccupied (Van Wormer 1989). During field surveys conducted in April, 1989, Van Wormer observed 23 occupied nests, six fewer occupied nests than were observed in June. The age of the nesting rookery is not well known, however, there is evidence that at least three nest structures were present at the time of construction of the P-1 Ponds in 1984 (Van Wormer 1988). Table B-1 presents available data on the history of the nesting rookery. Little nesting information is available prior to 1986. The P-1 Ponds are used for feeding by adult and fledged young herons. Newly fledged young herons appear to use the shallow ponds for feeding during July and August, eventually moving to more productive feeding areas in the Green River Valley. . Van Wormer (1988) found that a majority of the adult herons returning to and leaving the rookery on feeding forays flew to the south and east of the rookery. During July and August, 1989, fledged herons were observed by JSA staff to make only limited use of the ponds for feeding and/or loafing. This limited use may have been due to the very low water conditions in the pond and poor water clarity. Water in the ponds was rust-colored with limited visibility. Water was shallow and limited to narrow streams of inflow from Springbrook Creek and the drainage ditch located on the north boundary of Tract B. In past years the ponds have been stocked with fish, however, water levels in recent years have appeared lower than previously occurred (Erickson pers. comm.). Pond elevations are controlled at the King County pumping station. Reducing the discharge of water through the pump station could increase the ponded surface area, thereby improving foraging habitat for the heron. Since 1984, the Black River rookery has been subjected to a variety of disturbances and intrusions. Historical accounts of the rookery prior to 1986 are sketchy, however, Allmendinger (letter of 3/2/87) reported seeing nesting herons prior to the construction of the P-1 Ponds and forebay (report and decision, Office of the Hearing Examiner, City of B-2 Table B-L Charaderistica of Select Great Blue Heron Rookeries and Adjacent Human Activities in Washington and Oregon Adjacent Distance Rookery Approximate Human Rookery to Rookery Location #of Nests Activity Nest Trees Activity Status Comments Reference Black River 1987-8 to 10. Road Cottonwoods 200-1000' Viable P-1 Pond Van Wormer, Renton,WA 1988-18 construction, constructed 1984 1988;1989 1989-17 logging logging within 200 feet of rookery during March,1987. Lk.Sammamish 1985- 14 Public boat Cottonwoods —330' Viable High level of Murphy,1988 State Park, 1986-21 launch,boating human activity in Issaquah,WA 1987-29 area during 1988-unknown summer. 1989-unknown Peasley Canyon 1989-27 Park&Ride, Red alder 600' Viable Rookery size has Van Wormer, Auburn,WA roadways increased from 10 1988;Bock pers. nests in 1983 to comm. 27 in 1989. Ross Island 1989-50 to 50 Gravel Extraction Cottonwoods 200-300' Viable 300'buffer Pesek,pers. ed Portland,OR established,birds comm. W now nesting within 200 feet of activity. Pigeon Point 1986-16 Multifamily Cottonwoods 200' Viable Occupied in 1986; Penland pers. West Seattle,WA 1987-0 no nesting in comm.;Murphy, 1988-0 1987;observed to 1988;City of 1989-unknown be occupied in Seattle 1986. 1989. Spencer Property 1988-6 Single family Douglas fir 75-100' Viable Nests in 80-100' Jones&Stokes Redmond,WA 1989-unknown residential Douglas fir trees; 1988 adjacent property logged to within 50'of trees. Yarrow Bay 1987-6 Condominium, Cottonwoods —150' Viable 1985 estimated Murphy, 1988 Kirkland,WA 1988-unknown tennis club year of 1989-10 established. West Delta Park 1989-20 to 25 Railroad Cottonwoods 50-100' Viable Within Portland Van Wormer, Portland,OR switching yard, city limits. 1988;Pesek,pers. log handling yard, comm. golf course. Renton, June 9, 1987). According to Van Wormer (1988), excavation of the P-1 Ponds (including creation of the island supporting the rookery) was carried out from April to September, 1984. Based on review of aerial photographs of the P-1 Ponds and heron rookery, draglines and other heavy construction equipment were likely used within 50 to 100 feet of the rookery. During 1987, a large portion of the riparian forest between the Burlington Northern Railroad tracks and the P-1 Pond was cleared and partially filled. Logging activity took place from February to mid-March,within 200 feet of the rookery and during a time of nest selection, nest building and pairing. According to Van Wormer (1988), at that time the rookery contained eight nest structures. Since 1987, various degrees of disturbance to the rookery have occurred as a result of construction at the Metro wastewater treatment site (1,500 feet from the rookery), on Oakesdale Avenue (1,100 feet from the rookery), continued routine activities on the Burlington Northern railroad tracks (1,000 feet from the rookery), at the Black River quarry (2,400 feet from the rookery), and on property adjacent to Naches Avenue S.W. (1,000 feet from the rookery). Study Approach Information for this study was derived from three primary sources, 1) review of existing literature relative to the Black River rookery and the life history and effects of human activity on nesting great blue herons, 2) communications with biologists and others knowledgeable of the rookery and great blue herons, and 3) field visits to the site. A substantial amount of information is available on the life history and ecology of the great blue heron. Much of the information is found in life history accounts (Bent 1926; Lowe 1954; Palmer 1962), in published journal articles (Jenni 1969; Pratt 1970; Teal 1965; Murphy 1988; Mark 1975; Cottrille 1958; Henny 1971; Werschkul et al. 1976), or in special reports, correspondence and Masters theses or Doctoral dissertations (Parker 1980; Van Wormer 1987, 1988; Ives 1972). During the course of preparing this technical report, biologists and others knowledgeable of great blue herons and the rookery were contacted (Penland, Murphy,Van Wormer, Owens, Milner, McAllister, Pesek pers. comm.). During January, 1990, noise monitoring was conducted at the Black River and Peasley Canyon rookeries. A continuous noise monitor was placed at each rookery and background noise recorded for a 24-hour period. Noise data was down-loaded to a computer and printed on a spreadsheet format. Noise data(peak instantaneous and average noise levels) were then compared with noise literature and sound level data. B-4 Life History of the Great Blue Heron Ecological Overview The great blue heron is the largest and most widely distributed of American herons. It is found throughout much of the United States and Canada. The great blue heron is migratory throughout much of its northern range; in western Washington at least a portion of the population does not migrate. Great blue herons live within or near wetlands, along rivers and estuaries and coastal areas. They feed on fresh and marine fishes (approximately 72 percent of their diet),insects (8 percent of diet), crustaceans (9 percent of diet), mice and shrews (5 percent of diet), amphibians and reptiles (4 percent of diet) and vegetative matter (2 percent of diet) (Cottam and Uhler 1945). Herons breed after their second winter(Henny 1972). The breeding population (and . some subadults) gather at nesting rookeries in February and early March. During that time, adults establish territories, begin nest construction or reconstruction of old nests, breeding, egg laying and incubation. Egg hatching extends from March to April. Clutch size varies from 3.3 to 4.2 eggs per nest. Young herons become fledged in approximately eight to nine weeks from hatching (Henny and Bethers 1971). An average of 2.6 young were observed to fledge per successful nest in western Oregon (Henny 1971). Fledglings return to the nesting rookery from feeding forays for up to four weeks following first flight (Ives 1972; Murphy pers. comm.). In western Washington, a majority of young have flight capability by mid-June but most young stay in the vicinity of the rookery and nests for feeding which continues after first flight. During a field trip to the Black River rookery on June 21, 1989, many of the young had not yet achieved flight capability. The fledging time for late nesters may extend into July or August (Murphy pers. comm.; Ives 1972). Nesting Requirements Great blue herons are colonial nesters and generally nest in tall trees but have been found nesting in small trees or shrubs wherever trees are not available (Washington Department of Wildlife 1988). Nesting habitat requirements generally include the following components: • Grove of trees greater than 1 acre (0.4 hectares) in size; • Trees with sturdy branches for nest placement and an open canopy for ease of egress and ingress; • Tree height may be variable and dependent on the proximity of disturbance factors to the nest sites; B-5 • Nesting sites are generally close to water, not more than 820 feet (250 meters); and • Foraging requirements are for shallow, clear water with a firm substrate and adequate populations of huntable small fish (Short and Cooper 1985). While the above represent optimal nesting habitat components, deviations have been recorded. Several reports have noted a preference for tall or the tallest trees in a grove for nest location (Jenni 1969; Ives 1972). All of the great blue heron nests in rookeries visited for this study were located in the tallest trees or on a slope where the birds were situated above the surrounding terrain and a majority of the trees. Heron nesting has been recorded in highly urbanized settings as well as undisturbed sites. Because of the need for water in close proximity to a rookery, herons are often found nesting near areas of high human use such as along lakes and rivers. Herons will either return to the same rookery each year, or may move to other established rookeries or establish a new site when conditions are suitable (Henny 1972). Consequently, the size and number of heron rookeries in an area may oftentimes change from one year to the next. The reasons for change in rookery location and size include human disturbance; natural events such as flooding, fire or wind; depletion of nesting materials; changes in food supply; or effects of excrement on the nest trees or understory (Simpson et al., 1987; Werschkul et al. 1976). Parker (1980) surmised that small nesting colonies have become increasingly common in recent years, perhaps in response to the continued reduction of large expanses of undisturbed riparian habitat that could potentially support large rookeries. Effects of Human Disturbance During the past 15 years, numerous scientific studies have been undertaken to determine the effects of human activities on great blue heron nesting rookeries. Increasing development and more intensive human use of the land has resulted in a greater need to understand the ecological requirements and tolerances of nesting herons. Recently the Washington Department of Wildlife (WDW) developed guidelines for the management of great blue herons (WDW 1988). Their guidelines indicate that responses of great blue herons to human activities near the rookeries are not predictable. Herons have been known to abandon rookeries because of housing and industrial development, highway construction, logging, active roads, and repeated human intrusions into colonies (Leonard 1985;Parker 1980; Kelsall and Simpson 1979; Werschkul et al. 1976; Bjorklund 1975). Mark (1976), conducted an inventory of great blue heron rookeries in British Columbia. He found records of heron rookeries dating to before 1920. Many of the earlier recorded rookeries had been abandoned or destroyed by logging or development. Mark (1976) concluded that when a heronry is abandoned, the birds are generally able to relocate easily, provided that large trees remain in the area. B-6 li Other studies have shown herons to tolerate noise such as highway and railway traffic as well as human movement. Webb and Forbes (1982), reported that four great blue heron nests were established in a single row of planted trees located between a hotel parking lot and a heavily used roadway system servicing the airport in Vancouver, B.C. A second colony, located next to high-use areas in Stanley Park, Vancouver, B.C., has existed since 1921. Both rookeries are located in coniferous trees. In several letter reports, Van Wormer (1987, 1988) noted great blue herons nesting adjacent to a railroad siding and industrial park near West Delta Park in Portland, Oregon. Taylor and Reshkin (1981) conducted a study of the effects of recreational activities on a great blue heron rookery located along the Little Calumet River in Indiana. The biologists concluded that, based on intrusion impact tests (noise tests, helicopter intrusion, group trips to within 280 feet of the rookery), recreational activities during the nesting season could be allowed within 575 feet of the nesting rookery. Parker (1980), conducted a study of the effects of human disturbance on great blue herons in Montana. He determined that while nesting rookeries have been found to be long-lived in other portions of the country, in Montana herons appeared to move frequently in response to development and disturbance. Parker suggested that the decrease in rookery size and age and the increase in the number of colonies may be due to the fragmentation of riparian habitat and the loss of extensive woodlands able to sustain large and long-lived colonies. In Washington and Oregon, a number of heron rookeries are viable in urban or urbanizing settings (Table B-1). The following section provides a brief overview of several of those rookeries. Peasley Canyon Rookery. Auburn, WA In Auburn, WA the Peasley Canyon rookery (approximately 27 nests), is located within 300 to 600 feet of three busy roadways (Highway 18, Peasley Canyon Road and the West Valley Road), a Washington Department of Transportation (WDOT) Park and Ride lot, and a single family dwelling. The rookery is located on the side of an east-facing slope of alder, cottonwood, and Douglas fir trees. A pond and wetland lies between the rookery and the Peasley Canyon Road and Park and Ride facility. Land west of the site is -' undeveloped and is vegetated with bigleaf maple, alder, and Douglas fir. r' According to Robert Caldwell (pers. comm.), the WDOT Park and Ride lot was constructed in 1983 at its present location. Although the location of the lot as originally proposed, was shifted from the south side of the Peasley Canyon Road to its present location to avoid possible impacts on the rookery, a "defacto" parking lot had been created and extensively used by commuters at the previous south side location (Caldwell pers. comm.). To avoid possible impacts of construction on the nesting birds, and as a condition of project approval, no construction was allowed from February through June, 1983. Lot construction extended from July through September, 1983 with no observed adverse impact on the herons. �I B-7 I' Spencer Property, N.E. 95th Street, Redmond,WA Approximately six great blue heron nests are located in 80 to 100-foot tall Douglas fir trees on a 1-acre lot located near Bear Creek and Avondale Road,Redmond, WA (Table B-1). Property immediately east and west of the site has been cleared of trees to within 50 feet of the nest trees. According to Spencer (pers. comm.), the herons have used the grove of trees for nesting since 1983 or 1984. Based on known literature, the Spencer heron rookery is unusual because of the close proximity of the nest trees to occupied structures (100 feet). The level of human activity on the site is relatively low (lawn mowing, wood cutting, barbecues, barking dogs, etc.). The tolerance of the herons to human activity at this site is probably due to the height of the nests (80 feet) and the visual buffering provided by the foliage of the fir trees. Webb and Forbes (1982) suggested that the dense foliage of fir trees at the two rookeries in Vancouver, B. C. reduced nest visibility and buffered the effects of human activity. Yarrow Bay, Kirkland,WA The Yarrow Bay heron rookery is located near the Yarrow Bay condominiums, apartments and tennis club. The nest trees are located in cottonwoods approximately 200 feet from a swimming pool, cabana, tennis courts, and four-story apartment buildings (one story of which is parking). A narrow asphalt walk lies between the apartments and the rookery. While the area between the rookery and the development is densely vegetated with willows, alder, scattered cottonwoods and salmonberry, few trees are tall enough to provide a completely blocked view of the nests from the pool, walkway or buildings. Land to the west, north, and south of the rookery consists of forested and shrub wetland varying in distance from 1,000 to 1,500 feet to the nearest development. Human use and movement near the apartments occurs frequently, particularly during the summer months. Of the heron rookeries evaluated for this study, the Yarrow Bay rookery lies closest to a continuous moderate level of human activity. Nests on the Spencer property in Redmond are closer to occupied dwellings, however, human use of the site is light and dense vegetation provides a substantial visual buffer. During the fall of 1989, construction of several office towers was begun at Yarrow Bay approximately 1,200 feet south of the rookery. These office complexes will be approximately five stories in height. Additional development is also occurring approximately 600 feet west of the rookery. Lake Sammamish State Park, Issaquah, WA A great blue heron colony supporting approximately 29 nests, is located in black cottonwoods at Jensen's Cove in Lake Sammamish State Park. A public boat launch lies within 150 feet of the rookery and noise and recreational activities on the lake are frequent from spring through fall (Murphy 1988). Even with the frequent disturbance, the number of great blue heron nests has increased from seven in 1984 to 29 in 1987. B-8 Ross Island. Portland, OR The rookery is located on Ross Island in the Willamette River. Gravel extraction activities, which began in the late 1970s, are ongoing within 300 feet of the rookery. The gravel company signed an agreement with the Oregon Department of Fish and Wildlife (ODFW) to maintain a 300-foot vegetated buffer between the rookery and gravel extraction activities. There are no seasonal limitations on extraction activities (Pesek pers. comm.). Gravel is extracted by dragline and loaded aboard barges for transport to a crusher on the mainland or to other locations on the river. Activity is fairly constant and the noise levels are high. A log storage lagoon also lies at the edge of the buffer zone. The rookery consists of 50 to 60 active nests located at heights of 80 to 100 feet in 120-foot tall black cottonwood trees (4 feet in diameter). Since the buffer agreement was put into effect, the rookery has expanded in size so that a number of active nests now lie within 200 feet of gravel extraction activities (Pesek pers. comm.). tl Pigeon Point, West Seattle,WA The Pigeon Point heron rookery is located in red alders,big leaf maples and possibly Douglas fir trees on an east facing slope above the Duwamish Waterway in West Seattle. - The rookery held 16 nests in 1986 but was reportedly deserted in 1987 and possibly during 1988 (Murphy 1988; Penland pers. comm.). During a field visit to the rookery site on June 24, 1989 by JSA staff, great blue heron young were observed perched in alder and Douglas fir trees, however, no nest structures could be seen from the point of observation, approximately 1,000 feet down-slope from the nesting rookery. According to R. W. Thorpe and Associates (1985), the heron nests are located 600 to 900 feet from Alaska way and 150.feet from a Continental Van Lines loading facility on West Marginal Way. Land use adjacent to the rookery includes single family, commercial/industrial development and open space. West Delta Park. Portland, OR The West Delta Park rookery, located near Force Lake and West Delta Lake golf course, is approximately 10 to 15 years old. The nesting colony, consisting of 20 to 25 nests, is located in 80-foot high cottonwoods (2 to 3 feet in diameter), adjacent to an industrial area (railroad tracks, warehouses). The rookery is within 50 feet of the railroad alignment and 150 feet from the nearest buildings (Pesek pers. comm.). According to Pesek (pers. - comm.), there is limited human activity on the railroad tracks and in the vicinity of the buildings. According to Van Wormer (1987), construction of the warehouse, golf course, and railroad switching spur (all within 150 feet of the rookery)were completed with the rookery in place (18 nests in 9 trees smaller in diameter and stature than those at Black River). There were no conditions for construction (seasonal construction or setback requirements) of the warehouses (Van Wormer 1987). B-9 Garibaldi, OR Approximately seven years ago, a great blue heron rookery consisting of 20 to 25 nests, was established on vacant lots of a single family home subdivision in Garibaldi, a small coastal community located in Tillamook County, OR. The rookery was apparently established by herons displaced by logging activities in the area (Pesek pers. comm.). The nests are located in 60- to 80-foot tall alder trees less than 200 feet from existing single family homes. According to Pesek (pers. comm.), alders are the only tall trees in the area. Summary of Findings - Effects of Human Disturbance A majority of the information available regarding the effect of human activities on great blue heron rookeries is associated with either short-term construction-related activities or in areas where rookeries have been established after construction. Only limited information exists regarding the effects of construction activities on existing rookeries. Likewise, very little information exists regarding setbacks needed to provide long-term protection to heron rookeries. According to the USFWS Habitat Suitability Index model for great blue heron(Short and Cooper 1985), optimal nesting habitat includes a disturbance-free zone of 820 feet (250 meters) over land and 500 feet (150 meters) over water. While these distances represent optimal nesting conditions, research has shown that deviations have been recorded. There are many examples, as previously described, where human development preceded heron rookery establishment. Spencer property, WA; Yarrow Bay, WA; Ross Island, OR; and the Delta River Inn rookery, Vancouver,B.C. (Webb and Forbes 1982); are the most notable examples. In all cases great blue herons established rookeries at locations of known (and obviously acceptable) human intrusion and disturbance. Great blue herons established nests at distances varying from 75 feet to 300 feet from ongoing human activity. Rookeries located closest to disturbance (Spencer property and Delta River Inn) were established in coniferous trees,which suggests that the dense foliage of conifers reduces the visibility and provides "seclusion" for the nesting birds. West Delta Park, OR and at Black River,Renton,WA are examples where rookeries were established prior to construction activities (pond excavation, construction of warehouses and golf course). In both cases construction was carried out during great blue heron nesting activity and the rookeries continued to be viable after construction was complete. At the Pigeon Point rookery in West Seattle, WA herons are nesting within 200 feet of a moving company loading facility in a. commercial/industrial zone. It is not known whether development preceded the rookery.: Research indicates that great blue herons nesting in cottonwoods and other deciduous trees establish greater distances between the human disturbance and the nests. The Yarrow Bay rookery (a cottonwood rookery) is located within 200 feet of ongoing human activity and four story apartment buildings. This represents the closest known rookery site to an B-10 area at which there are tall buildings (four story apartments)continually used by humans. The Ross Island rookery lies within 300 feet of ongoing gravel mining, and newly established nests may be even closer. The Peasley Canyon rookery also lies within 300 feet of busy (and noisy) highways. The rookery at West Delta Park in Portland, OR is located in cottonwoods and within a few feet of railroad tracks (intermittently used) and 300 feet of occupied industrial buildings. Management Guidelines The WDW/Nongame Program,has established management guidelines for great blue herons in Washington (WDW 1988). It is mentioned that responses of great blue herons to human activities are not predictable,and for that reason nesting areas should be kept free of human disturbance within an 800-foot to 1,300-foot radius of the nesting colony during the breeding season (February 1 through August 1), and that a smaller, permanent buffer of 750 feet should be closed to human access year-round. Additionally, stands of trees at least 50 feet high and at least 10 acres in area should be preserved. In a February 20, 1987 letter to the City of Renton, the USFWS recommended that a 660-foot or greater radius no-construction and no-human-activity buffer zone be established from the center of the rookery. They also recommended that the buffer zone be revegetated with native Puget Sound lowland plants, that all buildings and parking lots be constructed as multi-level structures, and that the buildings be sited to act as a visual/sound screen between the,parking/service areas and the rookery. r—, At the Pigeon Point rookery in West Seattle, Penland the WDW stated that WDW considers 600 feet as a minimum buffer width, but that a 500-foot setback would be acceptable so long as modifications to a proposed Multifamily Planned Residential Development were made (City of Seattle 1986). In a Montana study on the effects of human disturbance on great blue herons, Parker (1980) recommended that a minimum of 10 acres of old-age cottonwoods be maintained for heron nesting, and that in an established rookery, a permanent buffer of 80 feet in radius should be established and closed all year. Additionally, an 820-foot no-entry zone should be established during the breeding season. Taylor and Reshkin (1981), recommended a 575-foot no-entry buffer zone around rookeries located on the Little Calumet River in Indiana. In studies of colonial nesters along the east coast, Buckley and Buckley (1976), recommended excluding all foot traffic within 1,000 feet of any active colonial nesting waterbird sites (including great blue herons). This recommendation did not take into consideration nest tree height or the buffering effects of tall or dense vegetation. Additionally, these recommendations were for National Park lands in relatively protected settings, not urban or suburban lands subject to a large number of ownerships and existing and potential land uses. The literature indicates a wide variety of buffer zone recommendations, some based on field observations and studies, others based on "scientific intuition." The eight case B-11 studies previously described show that there are a significant number of examples of tolerance of great blue heron to human disturbance. Successful heron rookeries in the Pacific Northwest have been established or maintained in urban settings at distances varying from 75 to 300 feet from human activities. Nowhere in any of the literature is any distinction made as to setbacks based on such factors as topography; vegetative type (evergreen vs. deciduous), height or density; surrounding land uses; or distances to existing intrusive activities. Field observations and biologists reports suggest the tree height, density and tree type are factors that influence the distance of heron nesting to areas of development or human activity, and that with dense vegetation, nesting herons may more readily accept disturbance at a closer distance than at more open sites. For example, herons have established nests in conifer trees within 75 feet of occupied dwellings or parking lots in Vancouver, B. C. and Redmond, WA. Herons are nesting within 150 feet of a swimming pool/cabana and four story apartments in Kirkland, WA (separated by a dense growth of willows, cottonwoods and wetland shrubs). A second factor of importance (at least in rookeries observed in the Puget Sound area) is the height of rookery trees in relation to the surrounding vegetation and surrounding land uses. In all rookeries field-examined and researched for this report, great blue herons either nested in the tallest trees in the immediate area or at a prominent location such as on a steep hillside. This preference for high nesting sites may be for ease of ingress and egress to the rookery and for nest defense and security (e.g., wide field of view for potential predators). A third factor common to the rookeries is the presence of a relatively unimpeded route for movement of adults to and from feeding areas, and the presence of vegetation immediately adjacent to portions of the rookeries. For example, at the Spencer property in Redmond, fields, pastures and vegetation border the rookery adjacent to Bear Creek; at the Peasley Canyon rookery dense vegetation lies upslope and to the north of the site; and at Yarrow Bay, Kirkland and at Lake Sammamish State Park, wetland vegetation and/or open water exist adjacent to the rookeries. Management guidelines specific to the Black River rookery were developed based on results of the literature review and the site-specific features of the rookery, including tree height,topography,presence of water,nest and buffer,tree location and density, disturbance history of the rookery, surrounding land use, and the results of past field studies of the rookery. Given those factors, guidelines for building setbacks, heights, configuration, and building materials were developed for Tracts A and B. The setback guidelines for distance from the rookery to the nearest building differ from those previously recommended by the WDE and the USFWS. These differences are based on the site-specific features of tree height and vegetative buffering. Blackriver Corporate Park - Track A Site Tract A lies southwest of the heron rookery and approximately 500 feet to the edge of the northern site boundary(Figure 4). The 500 feet from the rookery to the northern site B-12 boundary includes open water of the P-1 Pond, scattered wetland emergent vegetation, and a strip of grasses and 10 to 12-foot tall poplar trees planted on the site in 1986. The present elevations of the site were established from disposal of material dredged from the P-1 Pond. No vegetated buffer occurs between the site and the rookery. Because of the open view of the nesting rookery from Tract A, it is recommended that building setback be a minimum of 600 feet from the nearest rookery tree. Additionally, the area from the edge of the P-1 Pond to the nearest structure should be planted with native vegetation, preferably cottonwoods, to provide future wildlife habitat and visual buffering. Specific development guidelines for Tract A are as follows: • Plant trees and dense shrub vegetation at the northernmost portion of the site from the edge of the P-1 Ponds back 600 feet from the nearest rookery tree; • Construction of any buildings should be no closer than 600 feet from the nearest nest tree and not exceed four stories; any taller buildings should be 1,000 feet or further from the rookery; • Create dense vegetated buffer along the eastern boundary of the site to provide wildlife habitat a vegetated travel route for herons along Springbrook Creek (see Figure 4); • Buildings should be constructed in earth or natural tones; any glass facing the rookery should be nonreflective, nontransparent or hooded to minimize possible disturbance to herons; • Human access to the P-1 Pond should be excluded during the period from February 15 to June 15; and • No restrictions on timing of construction activities are necessary unless closer than 600 feet from the rookery, then no outside construction should occur during the period from February 15 to June 15. Blackriver Corporate Park - Tract B (Phase VII) Site Tract B (Phase VII) lies due south of the heron rookery and approximately 300 feet to the edge of the northern site boundary (Figure 4). The 300 feet distance from the rookery to the site boundary includes open water of the P-i Pond, emergent wetland vegetation, and cottonwood, Oregon ash, and alder trees varying in height from 50 to 123 feet. Much of the site to the south consists of low-growing grasses and shrubs (Figure 4). In 1986, a double row of poplar trees were planted along the west edge of the site adjacent to the P-1 Pond. Remnants of the cottonwood forest are present on the east and southeast portions of the site. A number of factors were considered when establishing guidelines for building setbacks and construction activities for the site. These included type, density and height of existing vegetation; height and location of the nest trees; surrounding land uses; site B-13 u , topography; known ingress and egress routes to and from the rookery; and the unknowns of great blue heron tolerance to human disturbance. Guidelines for Tract B (Phase VII) are as follows: • Establish a no-build or vegetation-removal setback from the rookery of 400 feet; • Plant cottonwood,douglas fir,western red cedar, Sitka spruce,hemlock,grand fir, and native shrub vegetation at the northernmost portion of the site back 400 feet from the nearest rookery tree. The evergreens should be planted closest to structures, the cottonwoods closest to the P-1 Ponds; • If more than one building is planned for the site, the construction should be phased, with the first phase of construction done at a distance of 600 feet or greater from the rookery; • Response of herons to construction should be monitored during and following construction; • Once vegetation in the buffer zone has achieved an average height of 25 feet, and assuming no impact to herons is caused by construction of the first phase, construction of the second phase can be carried out to within 400 feet of the rookery; • Human access to the P-1 Pond should be excluded during the period from February 15 to June 15; • Create a dense vegetated no-build buffer (location and width shown in Figure 4) along the western boundary of the site along Springbrook Creek, and maintain existing dense vegetation along the northern boundary of the site to provide a vegetated ingress and egress route for herons leaving from and returning to the rookery (see Figure 4); • The buildings should be constructed in nonreflective earth or natural tones; the amount of glass facing the rookery should be minimized and nonreflective, nontransparent or hooded to minimize disturbance; and • Any building construction within 600 feet (400 to 600 feet) of the rookery should be accomplished only from June 15 though February 15 of any year. u i B-14 REFERENCES Literature Cited Bent, A.C. 1926. Life histories of North American marsh birds. U. S. Natural History Bulletin 135. Washington, D.C. Bjorklund, R.G. 1975. On the death of a Midwestern Heronry - General Notes. The Wilson Bulletin, Vol. 87, No. 2. Buckley, P.A. and F.G. Buckley, 1976. Guidelines for Protection and Management of Colonially Nesting Waterbirds. North Atlantic National Park Service, Regional Office, Boston, MA. Cottam and Uhler, 1945. U.S. Fish and Wildlife Service leaflet no. 272. Cottrille, W. and B.D. Cottrille. 1958. Great Blue Heron: Behavior at the Nest. University of Michigan Press, Pub. 102. Henny, C.L. and M. Bethers. 1971. Population Ecology of the Great Blue Heron With Special Reference to Western Oregon. The Canadian Field - Naturalist, Vol. 25, pp. 205-209. Henny, C.J. 1972. An Analysis of the Population Fynamics of Selected Avian Species With Special Reference to Changes During the Modern Pesticide Era. U.S. Fish and Wildlife Service, Wildlife Research Report 1. 99 pp. Ives, J.H. 1972. Common Egret and Great Blue Heron Nest Study, Indian Island, Humboldt County, California. California Department of Fish and Game, Wildlife Management Branch Administrative Report No. 72-9. 39 pp. Jenni, D.A. 1969. A study of the Ecology of Four Species of Herons During the Breeding Season at Lake Alice, Alachua County, FL. Ecological Monographs, 39: 245-270. Jones & Stokes Associates, Inc. 1988. Great Blue Heron Rookery Investigation, N.E. 95th Street, Redmond, WA. Technical Report. 13 pp. Kelsall, J.P. and K. Simpson. 1979. A Three Year Study of the Great Blue Heron in Southwestern British Columbia. Proc. Colonial Waterbird Group, VOL. 3:69-74. Leonard,W. 1985. Inventory of Great Blue Heron Nest Colonies in Southern and Western Puget Sound. Unpublished report to Washington Department of Wildlife. Lowe, F.A. 1954. The Heron. Collins, London. 164 pp. Palmer, R.S. 1962. Handbook of North American Birds. Yale University Press, New Haven, CT. 567 pp. B-15 Mark, D.M. 1976. An Inventory of Great Blue Heron (Ardea herodias) Nesting Colonies in British Columbia. Northwest Science 50(1):32-41. Murphy, M. 1988. Status of Great Blue Heron Colonies in King County, Washington. Western Birds 19:37-40. Parker, J. 1980. Great Blue Herons (Ardea herodias) in Northwestern Montana: Nesting Habitat Use and the Effect of Human Disturbance. University of Montana, Unpub. M.S. Thesis. 61 pp. Pratt, H.M. 1970. Breeding Biology of Great Blue Herons and Common Egrets in Central California. Condor 72:407-416. Short, H.L. and R.J. Cooper. 1985. Habitat Suitability Index Models: Great Blue Heron. U.S. Fish and Wildlife Service Biol. Rep. 82(10.99). 23pp. Short, H.L. and R.J. Cooper. 1985. Habitat Suitability Index Models: Great Blue Heron. U.S. Fish and Wildlife Service Biol. Rep. 82 (10.99). 23 pp. Simpson, K. and J.N.M. Webb. 1987. Correlates and Consequences of Coloniality in Great Blue Herons. Can. J. Zool. 65:572-576. Teal, J.M. 1965. Nesting Auccess of Egrets and Herons in Georgia. Wilson Bulletin. 77(3):257-263. U.S. Fish and Wildlife Service. 1987. Letter to Donald Erickson, City of Renton regarding Blackriver Corporate Park Development. February 20, 1987. Van Wormer, R.L. 1988. Technical Report on Recommended Setbacks for Great Blue Heron Rookery. October 3, 1988. IES Associates. 10 pp. !, Van Wormer, R.L. 1987. Technical Report on Heron Activity on Blackriver Corporate Park Property and Recommendations to Reduce or Negate Impacts from Clearing and Grading Land South of the P-1 Canal Pond and the Designated Natural Area Easement. 23 pp. Washington Department of Wildlife (WDW). 1988. Draft, Recommended Management Guidelines for Washington Endangered and Threatened Species and Species of Concern - Great Blue Heron. Nongame Wildlife. Werschkul, D.F., E. McMahon, and M.Lertxchuh. 1976. Some Effects of Human Activities on the Great Blue Heron in Oregon. Wilson Bull. 88(4):660-662. Personal Communications Caldwell, R. June 19, 1989. Washington State Department of Transportation. Telephone conversation. B-16 McAllister, K. May 31, 1989. Wildlife Biologist, Nongame Wildlife Program, Washington Department of Wildlife. Telephone conversation. Murphy, M. June 2, 1989. Avian Researcher, Half Moon Bay, California. Telephone conversation. Owens, T. June 1, 1989. Wildlife Biologist, Nongame Wildlife Program, Washington Department of Wildlife. Telephone conversation. Penland, S. May 31, 1989. Urban Wildlife Biologist, Washington Department of Wildlife. Telephone conversation. Pesek,J. June 16, 1989. Regional Nongame Wildlife Biologist, Oregon Department of Fish and Wildlife. Telephone conversation. Van Wormer, R. May 31, 1989. Senior Biologist, IES Associates, Olympia, Washington. Telephone conversation. B-17 APPENDIX C CONSTRUCTION NOISE DATA Distance Attenuation for Typical Construction Activity Noise ==> Basic sound level drop-off rate : 6 .0 dB/doubling ==> Atmospheric absorption coefficient: 0. 5 dB/100 meters ==> Reference Noise Level: 90 dBA ==> Distance for -Reference Noise Level : 50 Feet DISTANCE ATTENUATION: DISTANCE TO dB CONTOURS : Receptor Noise Level Noise Contour Distance (dBA) at Contour Distance ( feet ) Receptor Value (dBA) ( feet) 50 90.0 105 9 100 83.9 100 16 200 77 . 8 95 28 400 71. 5 90 50 600 67.7 85 89 800 64 .9 80 159 I, 1,000 62 .6 75 267 1, 500 58.3 . 70 457 2,000 55. 1 65 792 2,500 52.4 60 1, 370 3,000 50. 1 55 2, 009 4, 000 46.0 50 3,007 5, 280 41.7 45 4, 122 7, 500 35.3 40 5, 491 9, 000 31.4 35 7, 535 10, 560 27.6 30 9,189 15,840 16 . 1 25 10,922 Notes: Drop-off calculations include atmospheric absorption at 0. 5 dB/100 meters, centered at the reference distance . Except for sounds with highly distinctive tonal characteristics, noise from a particular source will not be identifiable when its incremental noise level contribution is significantly less than background noise levels . Contour distance calculations are most accurate within the decibel range of the direct attenuation calculations . C-1 bistance Attenuation for Peak Construction Activity Noise ==> Basic sound level drop-off rate : 6 .0 dB/doubling ==> Atmospheric absorption coefficient: 0. 5 dB/100 meters ==> Reference Noise Level: 95 dBA __> Distance for •Reference Noise Level : 50 Feet DISTANCE ATTENUATION : DISTANCE TO dB CONTOURS : Receptor Noise Level Noise Contour Distance (dBA) at Contour Distance ( feet ) Receptor Value (dBA) ( feet ) 50 95.0 105 16 100 88 .9 100 28 200 82 .8 95 50 400 76 .5 90 89 600 72.7 85 159 800 69 .9 80 267 , 1, 000 67 .6 75 457 1, 500 63.3 70 792 2, 000 60. 1 65 1, 370 2, 500 57 .4 60 2, 009 3,000 55.1 55 3, 007 4, 000 51.0 50 4,122 , 5, 280 46.7 45 5, 491 7, 500 40. 3 40 7, 535 9, 000 36. 4 35 9, 189 ' 10, 560 32.6 30 10,924 15, 840 21.1 25 15, 304 Notes : Drop-off calculations include atmospheric absorption at 0 . 5 dB/100 meters, centered at the reference distance . Except for sounds with highly distinctive tonal characteristics, noise from a particular source will not be identifiable when its incremental noise level contribution is significantly less than background noise levels . Contour distance calculations are most accurate within the decibel range of the direct attenuation calculations . C-2 Distance Attenuation for Jack Hammer Noise ==> Basic sound level drop-off rate : 6 .0 dB/doubling ==> Atmospheric absorption coefficient : 1. 36 dB/100 meters ==> Reference Noise Level : 95 dBA ==> Distance for Reference Noise Level : 50 Feet DISTANCE AT1'ENUATION: DISTANCE TO dB CONTOURS : Receptor Noise Level Noise Contour Distance (dBA) at contour Distance ( feet ) Receptor Value (OBA) ( feet ) 50 95. 0 105 16 100 88. 8 ' 100 28 200 82 . 4 95 50 400 75.5 90 88 600 71.2 85 159 800 67.9 80 247 1, 000 65.. 1 75 415 1, 500 59 .5 70 6.40 2,000 55.0 65 1,005 2, 500 51.0 60 1, 481 - 3, 000 47. 3 55 1,999 4, 000 40.7 50 2, 547 5, 280 33.0 45 3, 115 7, 500 20.7 40 4,035 9,000 12.9 35 5, 178 10, 560 5.1 30 5, 436 15, 840 0.0 25 7, 281 Notes: Drop-off calculations include atmospheric absorption at 1 . 36 dB/100 meters, centered at the reference distance . Except for sounds with highly distinctive tonal characteristics, noise from a particular source will not be identifiable when its incremental noise level contribution is significantly less than background noise levels . Contour distance calculations are most accurate within the decibel range of the direct attenuation calculations . • L. • C-3 I. 1 Simulated Pile Driver Noise Impulse Event INPUT==> PEAK dB = 106 .00 dB INPUT==> DURATION = 0. 20 seconds , INPUT==> BACKGROUND dB = 40 . 00 dB ESTIMATED DATA POINT INCREMENTAL INTERVAL DECIBEL LEVEL CALCS SEQUENCE dB CHANGE COUNT 40 . 00 10000 1 0. 00 0 , 43 . 29 21311 2 3. 29 1 48 . 93 78201 3 5. 65 2 64 . 28 2679195 4 15. 35 3 , 106 . 00 39810717055 5 41.72 4 106 . 00 39810717055 6 0 . 00 5 106 . 00 39810717055 7 0 . 00 6 100 . 55 11349489303 8 -5. 45 7 95. 14 3263440539 9 -5. 41 8 89 . 80 954543632 10 -5. 34 9 , 84 . 57 286406918 11 -5.23 10 79 . 49 88881259 12 -5.08 11 74 . 59 28757240 13 -4 .90 12 69 .90 9775571 14 -4 .69 13 P 65. 46 3517192 15 -4 . 44 14 61. 30 1348782 16 -4 .16 15 57 . 44 554910 17 -3 . 86 16 53.92 246418 . 18 -3.53 17 50 .75 118768 19 -3. 17 18 47.95 62441 20 -2.79 19 45. 56 35966 21 -2 . 40 20 43. 58 22783 22 -1.98 21 42.02 15921 23 -1. 56 22 40 .90 12303 24 -1.12 23 1 40 .23 10533 25 -0.67 24 40 . 00 10000 26 -0.23 25 SEL = 90. 35 dB ERROR CHECK: -, Leq(pulse ) = 97 .17 dB INITIAL dB = 40.00 L(max) = 106 .00 dB FINAL dB = 40. 00 PEAK - SEL = 15.65 dB PEAK - Leg = 8 .83 dB EXPONENTIAL RISE SEL - Leg = -6 . 82 dB SINE FUNCTION DECAY I 1 C-4 PILE DRIVER EVENT PROFILE 0.2 Seconds Duration, Sine Wave Decay 110 n o 100 - 90 - 80 - n w U 0 70 - 11 60 - 50 - 40 =% • T 0 2 4 6 8 10 12 14 16 18 20 22 24 TIME INTERVALS FOR EVENT Distance Attenuation for Peak Pile Driver Noise ==> Basic sound level drop-off rate : 6 . 0 dB/doubling ==> Atmospheric absorption coefficient: 0. 5 dui/100 meters ==> Reference Noise Level : 106 dBA ==> Distance for Reference Noise Level: 50 Feet DISTANCE ATTENUATION: DISTANCE TO dB CONTOURS : Receptor Noise Level Noise Contour l Distance (dBA) at Contour Distance ( feet) Receptor Value (dBA) ( feet) 50 106 .0 105 56 100 99 .9 100 99 200 93 .8 95 176 400 87. 5 90 318 600 83 . 7 85 538 800 80.9 80 852 1,000 78 .6 75 1, 447 ' 1, 500 74 . 3 70 2,104 2,000 71. 1 65 3, 115 2, 500 68. 4 60 4, 243 3,000 66 . 1 55 5, 619 4, 000 62.0 50 7, 667 5, 280 57 .7 45 10, 379 7,500 51. 3 40 11, 064 9,000 47. 4 35 15, 438 10, 560 43. 6 30 16, 135 15,840 32. 1 25 19, 419 ' Notes : Drop-off calculations include atmospheric absorption at 0. 5 dB/100 meters, centered at the reference distance . Except for sounds with highly distinctive tonal i characteristics, noise from a particular source will not be identifiable when its incremental noise level contribution is significantly less than background noise , levels . ' Contour distance calculations are most accurate within the decibel range of the direct attenuation calculations . II C-6 11 Control of Impact Pile Driving e and StudyNoss of Alternative Techniques* ..... • ...,... . ,... .:;,..• ,• . „E.. . ,. , I ;:: ::-. / ..:-,,_--• t, cs ' r . - '�� : ' .. ..f-,. .PTO••-: .' R %� •~AZ* :t4tt4+t •e - 74 `j U..r,. { ` } -4� riff ::... ' � �r •«r+•._.w-- ..-. s ��� t• • — Zi,-_,fit j- • • -- Harjodh S. Gillt summarizes some of the basic characteristics of impact pile drivers, which are considered to be one of the most significant sources of noise annoyance during the operation of civil engineering projects. Also described are alternative piling methods and noise reduction techniques that have been developed by several contractors. It is shown that recent legislation and other stimuli have resulted in a range of pile drivers that can be 20 to 40 dB(A) quieter than conventional impact pile drivers. Nommumommoimommimilmomimmimmilmillmililmillmolli A pile is a structural member,wholly or partially buried in Until recently the general attitude of the public towards the ground, which receives a load at its upper end and construction noise has been one of tolerance. Since con- transmits that load at depth to the substrata.The use of im- struction noise is a temporary phenomenon at any one loca- pact devices in driving the pile almost inevitably gives rise to tion people will tend to endure it to a greater degree than high noise levels. noise from other sources. The growing awareness of en- vironmental and industrial noise and its adverse effects on •Received 30 August 1982;revised 8 November 1982 man, together with the demand for stricter noise control, tWilson. Ihrig & Associates, Inc., 5776 Broadway. Oakland. has led to the introduction of new legislation in the United California 94618 Kingdom and. many other countries. In the United This study was primarily carried out while the author was em- ployed as a research fellow at the Institute of Sound and ♦ib- 8 ration. University of Southampton,England panying Code of Practice,gave local authorities the power 76 NOISE CONTROL ENGINEERING JOURNAL/March-April 1983 C-7 - p to limit noise from construction and demolition sites.'a In steam. A compressor or a boiler is required for operation. recent years, it has become more common for local The use of pneumatic impact devices range considerably i authorities and contract documents to attempt to specify size, the smallest pneumatic hammer being adapted cor permissible noise levels, use of specific types of plants, or Crete breakers used for placing light trench sheeting. hours of working. Similarly, various authorities on the Pneumatic devices are also used for the extraction of piles. European continent have restricted the use of piling ham- The use of steam hammers is not preferred since steam pr( mers in densely populated residential areas and business ducing equipment is cumbersome compared with the alte _ centers. native use of mobile air compressors. Because of a recent upsurge in legislation,there has been a concerted effort by civil engineering contractors and some Vibratory Pile Drivers.The vibratory pile driver relies upo, manufacturers to reduce noise from impact pile drivers, the out-of-balance forces generated within the vibrator unit and in some cases to employ alternative piling techniques. containing a motor, shafts and eccentric weights. Thee These alternative techniques range from hydraulic, forces are transferred directly onto the pile head, the pr vibratory,sonic and bored piling. gress of which may be assisted by additional dead weigh This paper outlines the results of a study,primarily con- (kentledge).The excitation frequencies are generally in the ducted in the United Kingdom, of noise levels,spectra and range of 2 to 25 Hz. Vibratory pile drivers are also used fc waveform shapes from a range of pile driving devices which pile extraction,but the pull of a crane attached to the top were either adapted or designed specifically to produce the vibrator is required for the pile to be withdrawn from noise levels below those normally expected from conven- the ground. Attachment to the pile is usually by means er tional impact pile drivers. The results from conventional hydraulic clamping devices. The vibratory pile drivers pe' pile drivers are also included for comparison purposes. In form best in granular soils or loose/medium density coh_ addition, noise reduction techniques employed by several sionless soils, and are of limited use in heavy clay. contractors are briefly outlined. Alternative piling techni- ques are presented together with measured data.This study Sonic Pile Drivers. A more recent refinement to a is fully documented in Ref. 3. vibratory pile driver is the resonant pile driver,in which the vibration excitation frequency is controlled to match th of a suitable longitudinal mode of the pile—in the range 60 Categories of Pile Driving Equipment to 130 Hz. u Augering Techniques for Pile Placement.The employme There are many types of pile drivers.The most common of various augering techniques for pile placement offers categories are listed. quieter alternative to impact pile driving if the design and support requirements allow. After a pile has been po Impact Pile Drivers. In the case of impact pile drivers, a tioned in the bore hole,concrete is poured into the base ai regular sudden impact of a free piston or a weight on the the remainder filled with various mixtures of sand,cement top of a pile head is used to force the pile into the ground. and bentonite.Concrete piles up to over a metre in diamer" The main types of impact pile drivers are the gravity drop are also constructed with the use of shaft augering rigs tt hammer, diesel and pneumatic/steam. may be mounted on a crane or a special crawler rig:Smaller Gravity Drop Hammer:The gravity drop hammer relies size bored piles may also be constructed using a percussive upon the application of gravity force created by the technique that employs a tripod and a winch. deceleration of a massive weight which impacts directly or indirectly onto the pile head and is raised by means of a Miscellaneous Pile Driving Techniques. Electro-osmosis winch back to the drop position and then allowed to fall techniques maybe employed sometime in the near futu freely, usually by an associated crane. This method is still in ills early stages of development a' has already been used so assist in pile extraction. DC elec- Diesei:The diesel pile driver consists of a free piston in a trical current is applied to the pile to activate the grou cylinder, which may weigh several tons. It is a self- water and thereby cause lubrication at the pile/soil ini contained and self-activating type of unit. The piston is face.This method seems to be suitable only in clay soils a..J propelled on its upward stroke by the explosion of an could have application in pile driving, although it is en- air/fuel mixture.The piston strikes the anvil at the end of a visaged that problems could arise where pile interlocking downward stroke,which may fall under the action of gravi- required. ty(single acting hammer),or be propelled by the explosion Sometimes hollow core piles are driven with the internal of a second charge to further accelerate the hammer in its drop hammer. Impact noise emanates near the bottom - - downward flight path (double acting hammer). the hollow pile section, which is under ground, after Pneumatic or Steam: Pneumatic or steam pile drivers first few hammer blows. Thus, there is some degree operate in the same manner as the diesel hammer;however, sound attenuation and damping by the soil surrounding the the medium that propels the ram is compressed air or hollow pile section. Volume 20/Number 2 77 C-8 The "Hush" gravity drop hammer design is based upon "Quiet" Pile Drivers—Noise the conventional drop hammer principle. The entire pile Reduction Techniques and the hammer assembly is enclosed in a large vertical rec- tangular box constructed,from a sandwich panel of steel In recent years there has been considerable progress in and PVC rubber, giving an overall thickness of 16 mm, reducing noise from pile drivers,which are considered to be which effectively contains the noise.The composite wall is a significant source of community noise. designed to reduce noise transmission in both mass and This section outlines the more successful noise reduction stiffness-controlled regions. The box has openings at the techniques employed by various contractors to reduce noise top through which the crane leads are passed and a door from pile drivers. Full details of noise reduction techniques that consists of an entire front side. The pile is installed developed by several other contractors and manufacturers through the full length of the door, which is locked into may be found in Ref. 3. position by large wing nuts. The box is made up of a Taywood "Pilemaster:" This is an electrically driven number of sections (each with a door) to accommodate hydraulic pile driver which generates its driving force from varying pile lengths. The bottom door contains an inspec- frictional restraint of piles in the panel contained by the tion hatch, which enables the operator to check progress machine. A panel of seven or eight piles are pitched at a during driving. The rig is mounted on rails at ground level, time and the system operates rams to force two of the piles where adjustments can be made by jacking the wheels,and downwards. When these have been driven to the full 750 bolted at the top to the crane jib cat-head through a univer- mm stroke of the rams the next pair are driven, and so on sal joint, which maintains alignment. At present, the rig until all eight piles have been driven 750 mm. All of the employs a cast iron hammer weighing 3 tons,which is nor- rams are then retracted,allowing the"Pilemaster"to lower mally dropped from a height of about 750 to 900 mm. itself to the new level,and the cycle is repeated sequentially. Sometimes hammers weighing 4 and 5 tons are also used. " The initial reaction available for driving the first pair of Impacts from the hammer are transmitted via a hardwood piles is the weight of the "Pilemaster," about 10.5 to 12 dolly to a steel plate anvil situated on top of the pile.The rig tons, plus the weight of the piles connected to it. The "Pilemaster" can be used for extracting as well as driving either drives a single pile or a pair of piles.Another version piles and is best suited to cohesive soil, because friction is of the rig can handle 'H' piles up to 25 metres in length. essential to the driving process.The added advantage of the At present, the "Hush" diesel hammer employs a B225 "Pilemaster" is that once the piles have been driven far Berminghammer to drive the pile(s)enclosed within a large enough to support the rig,the crane which must hold it until vertical rectangular box whose construction is identical to this point is reached,can be released to pitch further piles or the one used for the"Hush"gravity drop hammer.This rig to do other work.Furthermore,unlike most other systems, is incorporated with an efficient ventilation system to there is neither impact noise nor the generation of signifi- replace burnt gases with clean air which enables the cant ground vibration from the "Pilemaster." "Hush" diesel hammer to "breathe" adequately. The rig has been fitted with a venturi tube mechanism at the top of Dawson"Quiet Piling Rig:"The Dawson "Quiet Piling the box and fed with compressed air from the crane's corn- Rig" design is based upon the drop hammer principle. A pressor, to accelerate the expulsion of hot exhaust gases steel jacket of 884 mm diameter encloses the cast iron ham- from the box. It also has two cylindrical pipes running mer weighing 5 tons,and the anvil.Noise is attenuated by a along the vertical length of the box, with openings at the specially cohstructed 125 mm dolly on top of the anvil,and bottom and the top, through which cool air is drawn into by polystyrene chips which are fed to the impact surface the box from the outside. through a 50 mm annular space between the hammer and the jacket, which serves to avoid metal-to-metal contact DMD"4 Ton Solid 3N Initial Drive Hammer:"This rig between the hammer and the anvil. Wooden strip spacers is based upon the drop hammer principle, employing a running vertically inside the shell are employed to guide the hammer weight of 4 tons.The hammer is not enclosed but is ' hammer drop on the dolly.Close fit of the rig to the piles is recessed on the underside.The hammer blow on top of the maintained with nylon rollers attached to the long pile pile head is cushioned by introducing an asbestos padding guides.This helps to prevent the hammer from moving ex- material and "ship rope" between the pile head and the cessivcly after each hammer blow has been struck and it is hammer. The hammer fall is guided by nylon guide strips also thought to provide a certain amount of pile vibration fixed to the hammer side slits.A strip of loosely connected damping. heavy duty conveyor belt is employed to reduce metal-to- metal contact between the hammer and the pile side. S.P.C. "Hush" Piling Rigs: Currently there are two Another version of the rig, namely the "5 Ton Solid 3N main "Hush" systems in operation, namely the "Hush" Drop Hammer,"employs a hammer weight of 5 tons.This gravity drop hammer and a"Hush"rig for use with a diesel hammer has an additional one ton weight added at the top, hammer. Both of these rigs are very much similar in otherwise it is identical to the"4 Ton Solid 3N Initial Drive appearance. Hammer." 78 NOISE CONTROL ENGINEERING JOURNAL/March-April 1983 C-9 Basic Characteristics of Impact Pile Drivers II J The A-weighted pressure-time waveforms p(t), and j sound pressure level time histories Lp(i), of noise from the - i ' i I pile drivers were examined digitally from the recorded t., analogue data with the aid of the 1SVR Data Analysis ,;; s1. , 1 ��Fitkt,.,�' ttr' , i. . • Center facilities. Figure 1 shows an example of p(t) w `'It' ! 1 IIi�C. '! ''� .l trq;; ;ti••••t►' Y-•"' �'` waveform sampled at 1000 samples per second. - , I' „�I '� Examination of all thep(t)waveforms showed that,in all ' r•'1 cases where impulsive impact was taking place above the - 1 ground, noise produced by the hammer impact and the ex- 0.034s haust of working fluid was dominant over noise from other - I 1 to -1 sources, such as ancillary equipment. Furthermore, the TIME study showed that the characteristic waveform shape from g impact pile drivers was that of a decaying exponential im- Figure I—A-wceighted pressure time waveforms of DMD "4 Ton pulse,except where a significant exhaust pulse was present, Solid 3N Initial Drive Hammer" or where a high impact rate rendered the noise effectively continuous. All the pressure-time data were integrated digitally to generate sound pressure level time histories with integration 90 ' times ranging from 10 to 500 ms,to encompass the range of a ! integration times found on sound level meters. Figure 2 shows an example of such a Lp(t) trace. The use of the ' ,_ shortest practicable integration time (10 ms) has allowed 80 ; the rapid rise of the main impulse and the secondary peak ! i, caused by exhaust emission to be observed. Generally, an 1+ !E exponential pulse should exhibit a linear decayof L t on R 70 ? - .�. ' ` 1 , , . d ) .. 1� the trailingW 1.4 r .:• _ •! .:.�.• :. . - edge of the pulse.The raw Lp(t) traces gave no � . s. ire -:�" • �'}� ' :-�.-.: clear indication of this, c. w� d -- •ty.�_ .:, :114. ..-= z.: y:4 in icatiso that in each case the cumulative �' ` r "`}= " :." -• • 2 .` s.` ! : it -.r,Sai distribution function of sound pressure level (CDF(Lp)) 0 60 • ' 1 u � ' �!� ' � '�' '' e was derived as shown in Fig.3.The tendency to linearity of v. : ' 1 • 1 ` 1 ".� ,,i ,1 . ►'1 �, i the low probability sections of the CDF(Lp) curves in- I. dicated that even in the presence of an exhaust noise the I 1 I l� I predominant characteristic of the pulses is exponential 50 where the repetition rate allows the separation of adjacent 25 50 75 100 i impacts. This conclusion allows an examination of the TIME - SECONDS theoretical analysis of impact pulses(see Ref.3 for details). Figure 2—Sound pressure level time history for DMD "4 Ton ' Solid 3h'Initial Drive Hammer,"with 10 ms integration period 1.0 Measured Noise Data and Discussion of Results , - ., INTEGRATION PERIOD Table 1 shows typical noise levels from "quiet"and con- = a ••• 35 ms ventional pile drivers at a distance of 15 metres.The results a _ _ m 0.5 -• 200 ms are shown in terms of equivalent sound level,Leg, because m of its wide use as a single-number descriptor of en- 2 i 500 ms p vironmental noise. A range of noise levels results from a i • measurements performed at different times (see Table 1). to l . Table 1 places the piling and extracting rigs into three • -i._ broad categories, according to noise levels emitted— 0.0 ' R • -`' "conventional" 60 70 80 90 "quiet," "semi-quiet" and rigs. These categories allow a direct comparison of noise levels and SOUND PRESSURE LEVEL - dB(A) ° , assessment of the manufacturers success in reducing the Figure J-Probability of exceeding a particular sound pressure noise levels in more general terms.Note that Table 1 also in- level for DMD "4 Ton Solid 3N Initial Drive Hammer" Volume 20/Number 2 79 C-10 TABLE 1 MEASURED EQUIVALENT SOUND LEVELS(Leg)FROM PILE DRIVERS DRIVING SHEET PILES NORMALIZED TO A DISTANCE OF 15 METRES Item Machine Type Lea—dB(A) Classification of Rig' 1 SPC "Hush" drop hammer 62-63 Q 2 Dawson "Quiet Piling Rig" 69-72 Q 3 Evans "Stealth Hammer" 81-83 SQ - 4 DMD "4 Ton Solid-3N Initial Drive Hammer" 74 Q 5 DMD "5 Ton Solid 3N Drop Hammer" 82 SQ 6 DMD "6 Ton NAP Hammer" 81 SQ 7 "Sh-Sh-Shelbourne's Piling Rig" 79 SQ 8 Dawson "4 Ton Conventional Drop Hammer" 97 C 9 SPC "Hush" diesel hammer 71 Q 10 Delmag D60 diesel hammer 95 C 11 Delmag D30/02 diesel hammer 97 C 12 Kobe 35 diesel hammer 100 C 13 BSP B15 diesel hammer 85 SQ 14 BSP "Impulse Pile Driver" 87-89 SQ 15 BSP 700N pneumatic hammer 104-106 C 16 BSP HD7 pneumatic extractor 93 C 17 Taywood "Pilemaster" 65-67 Q 18 Evans "Tomen Vibro VM2-5000" 81-86 SQ 19•• Hawker Siddeley"Resonant Driver Unit 400" 76-82 SQ •Q=Quiet.SQ=Semi-Quiet.C=Conventional Machine ••Operated by Hawker Siddeley Canada Ltd..Vancouver.B.C. dicates the three categories into which each of the pile driv- which no consideration had been given to reducing the ing and extracting rigs have been classified. amount of noise generated. Examination of Table 1 indicates that the range of The typical frequency spectra from most of the piling equivalent sound levels, Leg, measured within each and extracting rigs is shown in Figs. 4a to 4f. A response category are 62 to 74 dB(A)for"quiet"rigs,76 to 89 dB(A) time encompassing several pulses was used to generate for"semi-quiet"rigs and 93 to 106 dB(A)for conventional third octave spectra. These figures show the third octave untreated rigs. These results indicate that the equivalent band levels normalized at a distance of 15 metres and are sound levels generated by extensively treated machines grouped according to type of rig, namely—gravity drop (that is, SPC "Hush" drop hammer, Dawson "Quiet Pil- hammers (Figs. 4a and 4b), diesel pile drivers (Figs. 4c ing Rig," DMD"4 Ton Solid 3N Initial Drive Hammer," and 4d), pneumatic rigs (Fig. 4e) and miscellaneous rigs SPC "Hush" diesel hammer and Taywood "Pilemaster") (Fig. 4f). are approximately 20 to 40 dB(A) lower than those The spectra shown in Figs. 4a and 4b, for gravity drop generated by untreated machines at equivalent distances, hammers, indicates that, in almost all cases, the levels at 1 these reduced noise levels being equal to or less than that low and mid frequencies dominate the spectra which is produced by other construction site noise sources. Gener- essentially flat over this region and then gradually decay at ally, the expected equivalent sound levels generated by higher frequencies.The exception to this rule was the SPC medium size conventional piling rigs at similar distances are "Hush"drop hammer,shown in Fig.4a.This rig produces in the range of 90 to 100 dB(A),and for larger capacity con- a type of spectra normally associated with the diesel inter- ventional piling rigs from 100 dB(A)upwards.' nal combustion engine powered equipment, indicating a Note that the rigs which have been designed with a de- maximum at relatively low frequencies and containing less tailed consideration given to reducing noise,and sometimes energy at higher frequencies. even employing a totally new principle(as in the case of the The spectra for diesel pile drivers.shown in Figs.4c and Taywood "Pilemaster"), are the ones which have been 4d, are similar to those generated by drop hammers. Note classified as"quiet" rigs in Table 1.The conventional pile that the spectra for the diesel pile drivers sometimes peaks drivers and extracting rigs can be defined as those rigs in at low frequencies due to the exhaust noise. 80 NOISE CONTROL ENGINEERING JOURNAL/March-April 1983 C-11 u h ' , 100 r .4. _ ill ilrilllllllllllllllltllll- 1 _ Illlli1. 1111tilttltillilttllIl R 90 I=m — 1:=m — - _ k '� _ _ Is - y�, te._a� 60 , , _ 60 ._ ,r= 0 50-- • y 40 o 021 30 € tIl1IIIItIIItIIt1111111111iI :0_..i! 0 tIItIIttIIIllllttiltlllt31.5 63 125 250500 1k 2k 4k 8k 31.5 63 . 125 250 500 I k 2k 4k 8k Octave Band Center Frequency, Hz o Octave Band Center Frequency, Hz b o Dawson"4 Ton Converdional Hammer" o 0M0 "6 Ton NAP Hammer" a Evora"Stealth Hemmer" c"Sh-Sh-Shelbourne', Plrq Rig" x Dorsett"Quiet Piling Hume" x CND"4 Ton Sold 3N Initial Drive Hammer 1 A SPC"hush" Drop Hammer A DMO"5 Ton Solid 3N Drop Hamner" Figure 4a—Spectra normalized at a distance of 1S metres for gra- Figure 4b—Spectra normalized at a distance of IS metres for gra- ' vity drop hammer pile drivers vitp drop hammer pile driven11 I10 s_ 8 _ illilllllllrlllllllllllIIIII: IIIIIIIIIIIIIItIIIIIIIIIIIII- m 100- 8 90— = ' :_ • VO :.• / 6°7. h I ' ' Iso q 40 C IIIIIIIIIIIIIIIIIIIIIIIIIIII' 30 IIIIIiIIIII1IIIIIIIIIIIiiII'I 3l5 125500 Ik 2k 4k 8k o 3l5 63 125 250 500 Ik 2k 4k 8k 1 CenterOctave Bond Frequency, Hz Octave Band Center Frequency. Hz o Deknog 030102 Diesel Hammer o OSP Bpi Diesel Hammer O Delmog D60 Diesel Homier Hamner ' O SPC"Hush"Diesel Fber x Kobe 35 Diesel Hammer Figure 4c—Spectra normalized at a distance of 1S metres for diesel Figure 4d—Spectra normalized at a distance of IS metresfor diesel pile drivers pile drivers I• • Volume 20/Number 2 it C-12 1 ioo 8 I10 C IIIIIIIIIIIIIII1IIlIl1lIII11C 8 ,_ III IItilitiiIIIIIIIItIIIIIII: R ao_._ = f1 90 904 . 60- jeAaMAti - N 80# - r V 0 - - t = Cr_ lap c • 50-- 60— _ $ __ 8 _ 40 _ - iii li tliiiIiiitlltlt ► Iiiiti= E 30 = ilitltllltltlltilltlitlttlit= 40 31.5 63 125 250 500 Ik 2k 4k 8k 31.5 63 125 250 500 Ik 2k 4k 6k Octave Bond Center Frequency, Hz 0 Octave Band Center Frequency, Hz o ESP 700N Pneumatic Hammer o Evans"Tomes Vitro VM2-5000" O ESP HD7 Pneumatic Hummer o Toywood"Pdertasur" x ESP"Impulse Pile Driver" Figure 4e—Spectra normalized at a distance of 15 metres for met,- Figure 4f—Spectra normalized at a distance of 15 metres for matic pile drivers miscellaneous pile drivers 100 - IIIIIIIIJIIIIIIIIIIIIIIIIIII: ' 8 - — levels drop speedily at higher frequencies.This type of spec- 1. -+ -90 trum can be associated with the electric motor, which is m = - employed by the "Pilemaster" to drive the rams m = hydraulically. Furthermore, the continuously generated . -E. broadband noise from the"Pilemaster"is considered to be subjectively less annoying than the impulsive noise from 70—_ = other piling rigs. I. _ Overall spectral characteristics of noise from the pile 60= drivers and extracting rigs have been discussed, but the spectrum of the SPC"Hush"drop hammer,shown in Fig. 4a, shows some particular feature of interest. The SPC g 50 = "Hush"drop hammer exhibits a gradual drop of spectral I$ _ - energy from the 50 Hz band upwards. This is due to the • 1 40_ • - design of the box, which reduces the energy in the higher frequencies to a greater degree than the energy at lower fre- P 30 - 11 I I I I t 1 t t I t I 1 I I 1 I I 1 t t I 1 I 1 t I= quencies. The significance of this is that the energy at 3L5 63 125 250 500 1 k 2k 4k 8k higher frequencies is greatly reduced,thus generating lower rg Octave Bond Center Frequency, Hz equivalent sound levels when the noise is A-weighted.The o Salad door at the bottom opened effect of opening the small inspection door at the bottom of a small door at the bottom dosed the box facing the measurement location during the opera- ' tion of the SPC"Hush"diesel hammer is shown in Fig.S. Figure 5—Showing the spectra normalized at a distance of 15 The figure shows that an appreciable increase in sound metres for the SPC"Hush"diesel hammer, with the small inspec- levels occurs over the full range of frequencies when the . " tion door at the bottom opened and closed small inspection door is opened, with the exception of the s 63 and 80 Hz bands. This is thought to be caused by the Figure 4e shows the spectra for the pneumatic pile drivers "mass-air-mass resonance" effect of the sandwiched and extracting rigs.The characteristics of such spectra are panels of the rectangular box. The overall effect of the that the levels are fairly constant over the mid-frequency acoustically designed box in reducing the noise emitted by range and contain appreciable energy at high frequencies. the SPC"Hush"diesel hammer is likely to be considerably The spectrum of the Taywood "Pilemaster," shown in more than the increase in sound levels exhibited in Fig. 5, Fig. 4f, is flat in the middle frequency range and then the when the small inspection door at the bottom was opened. 82 NOISE CONTROL ENGINEERING JOURNAL/March-April 1983 C-13 Noise Data Summary for the Peasley Canyon Site , Interval 15-Minute Time Interval Statistics Hourly -_ Starting Average Time Leg SEL Lmin Lmax Lpk L10 L33 L50 L90 Leg I , 11:00 AM 63.5 93.0 56.5 70.5 87.0 65.0 64.0 63.0 59.5 61.8 11:15 AM 63.0 92.5 56.0 69.0 83.0 65.0 63.5 62.5 60.5 I, 11:30 AM 58.5 88.0 53.0 66.0 82.0 60.5 59.0 58.0 56.0 , 11:45 AM 60.5 90.0 54.0 75.0 87.5 62.0 60.5 59.5 57.0 12:00 PM 63.5 93.0 56.5 68.5 84.0 65.5 64.0 63.0 60.0 65.1 12:15 PM 64.0 93.5 59.0 70.0 86.0 66.0 64.0 63.5 61.5 12:30 PM 64.0 93.5 59.0 70.0 89.5 66.0 64.0 63.0 61.0 12:45 PM 67.5 97.0 59.5 81.5 97.5 69.0 65.0 63.5 61.5 1:00 PM 66.0 95.5 59.0 76.5 92.0 69.0 64.5 63.5 61.0 65.4 ... 1:15 PM 64.5 94.0 60.0 70.5 86.0 67.0 . 64.5 63.5 61.5 1:30 PM 65.0 94.5 60.0 74.0 88.5 67.0 65.0 64.0 62.0 1:45 PM 66.0 95.5 60.0 78.5 95.5 68.5 65.0 64.0 62.0 , 2:00 PM 64.0 93.5 60.5 68.5 91.5 66.0 64.0 63.5 62.0 63.9 2:15 PM 63.0 92.5 57.0 68.5 90.0 65.0 63.5 63.0 60.5 2:30 PM 65.5 95.0 57.5 79.0 94.0 69.5 63.5 62.0 59.5 2:45 PM 62.5 92.0 58.5 70.5 91.5 64.5 62.0 61.5 G0.0 i 3:00 PM 62.0 91.5 58.0 72.0 92.0 64.0 61.5 61.0 59.5 62.1 3:15 PM 61.0 91.0 58.0 66.5 82.0 62.5 61.5 61.0 59.5 3:30 PM 63.5 93.0 58.0 76.5 92.5 65.0 62.0 61.0 G0.0 3:45 PM 61.5 91.0 58.0 68.5 82.0 63.0 G2.0 G1.0 60.0 4:00 PM 62.5 92.0 58.0 74.5 92.5 65.5 61.0 60.5 59.0 G4.3 4:15 PM 65.5 95.0 57.5 77.0 99.0 69.0 62.5 61.5 60.0 4:30 PM 63.0 92.5 57.5 77.0 91.5 65.0 61.5 61.0 59.0 4:45 PM 65.5 95.0 58.0 80.0 95.5 69.0 62.0 61.0 . .5 5:00 PM 61.0 90.5 57.5 72.0 97.0 62.0 60.5 60.0 59.0 60.3 5:15 PM 60.5 90.0 58.5 66.0 92.0 61.5 61.0 60.5 59.5 5:30 PM 60.0 89.5 57.5 68.0 96.0 61.0 60.5 60.0 59.0 5:45 PM 59.5 89.0 57.0 72.0 102.5 60.5 59.5 59.0 58.5 6:00 PM 61.0 90.5 57.0 74.0 113.5 62.0 60.5 60.0 58.5 62.1 6:15 PM 63.0 92.5 56.0 74.0 92.0 66.5 61.5 60.0 58.5 6:30 PM 61.5 91.0 56.5 76.5 91.0 61.5 59.5 59.0 577 5 6:45 PM 62.5 92.0 54.0 77.0 94.0 63.5 59.5 59.0 , 7:00 PM 64.0 93.5 55.0 79.0 95.0 65.5 59.5 58.5 56.5 62.3 7:15 PM 63.0 92.5 54.0 75.0 108.0 67.5 59.5 58.5 56.0 7:30 PM 62.5 92.0 53.0 77.0 92.0 65.0 58.0 57.0 55.5 7:45 PM 57.5 87.0 54.0 66.0 104.5 59.0 58.0 57.0 55.0 8:00 PM 62.5 92.0 57.0 75.0 115.5 65.5 62.5 60.5 58.5 61.9 8:15 PM 63.5 93.0 58.5 78.0 109.0 65.0 62.0 61.0 60.0 i 8:30 PM 61.0 90.5 57.0 72.0 108.5 62.5 60.0 59.5 58.5 8:45 PM 59.5 89.0 55.0 75.0 116.0 60.5 59.0 58.5 57.0 i, p I I . w C-14 Noise Data Summary for the Peasley Canyon Site Interval 15-Minute Time Interval Statistics Hourly Starting Average Time Leg SEL Lmin Lmax Lpk L10 L33 1.50 L90 Leg 9:00 PM 58.0 87.5 52.5 70.5 112.0 59.0 58.0 57.5 56.0 57.0 ' 9:15 PM 56.5 86.0 52.0 67.0 98.5 58.5 57.0 56.0 54.5 9:30 PM 57.0 86.5 50.5 65.5 101.0 58.5 57.0 56.5 54.5 9:45 PM 56.5 86.0 51.5 66.5 96.0 58.0 56.5 56.0 53.5 0 10:00 PM 56.5 86.0 49.5 69.0 101.5 58.5 56.5 56.0 53.5 56.5 10:15 PM 55.5 85.0 50.0 63.0 94.0 57.0 55.5 55.0 53.0 10:30 PM 57.0 86.5 48.0 72.0 93.5 58.0 56.0 55.0 52.5 10:45 PM 57.0 86.5 48.5 70.5 96.5 58.5 56.0 55.0 52.5 11:00 PM 56.5 86.0 51.5 63.0 94.5 58.0 56.5 56.0 53.5 56.4 11:15 PM 56.0 86.0 50.5 65.0 89.0 58.0 56.5 55.5 53.0 11:30 PM 56.0 85.5 49.0 67.0 99.0 58.5 56.5 55.5 52.5 11:45 PM 57.0 86.5 50.5 69.5 92.5 59.0 56.5 55.5 53.0 12:00 AM 56.0 85.5 50.0 62.5 93.0 58.5 56.5 55.5 52.5 54.6 12:15 AM 54.5 84.0 47.0 59.5 92.0 57.0 55.0 54.0 50.5 ' 12:30 AM 53.5 83.0 45.0 59.0 86.0 56.0 53.5 52.5 50.0 12:45 AM 54.0 83.5 45.5 64.0 93.5 57.5 53.5 52.0 48.5 1:00 AM 52.0 61.5 41.0 65.5 94.5 54.5 51 .5 50.0 46.0 54.5 1:15 AM 53.0 82.5 , 42.0 63.0 93.0 56.5 52.5 50.5 46.0 1:30 AM 57.5 87.0 41.5 75.0 91 .5 58.0 53.0 52.0 46.0 1:45 AM 53.0 82.5 42.5 68.5 94.0.'• 55.5 52.0 50.5 46.0 2:00 AM 52.0 81.5 41.0 61.5 95.0 55.0 52.5. 5i0 46.0 50.5 ' 2:15 AM 49.5 79.0 40.0 56.5 94.0 53.0 50.0 48.5 43.5 2:30 AM 49.5 79.5 39.0 58.0 91.0 53.5 50.0 48.0 42.0 2:45 AM 50.5 80.0 39.5 59.0 ...._ 554.S• 55.0 4s.5 43.0 3:00 AM 51.5 81.0 41.0 62.0 88.0 55.0 51.0 49.0 45.0 51.0 3:15 AM 49.5 79.0 40.0 58.0 93.5 53.0 50.0 48.0 42.0 3:30 AM 50.0 79.5 39.5 57.0 88.5 53.5 50.5 48.5 42.5 i 3:45 AM 52.5 82.0 40.5 63.5 88.0 56.0 52.0 50.5 44.5 4:00 AM 52.5 82.0 42.0 60.5 85.0 56.5 53.0 51.0 45.5 52.8 4:15 AM 52.0 81.5 44.0 59.0 83.5 55.0 52.5 51.0 48.5 4:30 AM 52.5 82.0 45.5 59.5 82.0 55.5 53.0 51.5 48.5 4:45 AM 54.0 83.5 45.0 60.0 74.0 56.5 54.5 53.5 50.0 5:00 AM 55.5 85.5 48.0 60.0 86.0 58.5 56.0 55.0 52.0 58.4 5:15 AM 58.0 87.5 53.0 61.5 79.0 59.5 58.5 57.5 56.0 5:30 AM 59.5 89.0 55.5 63.0 81.0 60.5 60.0 59.5 57.0 5:45 AM 59.5 89.0 56.5 63.0 80.5 60.5 60.0 59.5 58.0 6:00 AM 60.0 89.5 57.0 67.0 84.0 61.5 60.5 60.0 58.5 62.6 6:15 AM 61.0 90.5 57.5 65.0 92.0 62.0 61.0 60.5 59.5 6:30 AM 61.5 91.0 59.0 68.0 84.0 62.5 62.0 61.5 60.0 6:45 AM 65.5 95.5 59.0 79.0 97.5 67.0 63.0 62.0 60.5 i • C-15 Noise Data Summary for the Peasley Canyon Site Interval 15-Minute Time Interval Statistics Hourly Starting Average • Time Leg SEL Lmin Lmax Lpk L10 L33 L50 L90 Leg 7:00 AM 68.0 97.5 62.0 82.5 100.0 71.5 66.0 65.0 63.5 65.8 7:15 AM 66.0 96.0 59.0 77.0 91.5 69.0 66.0 65.0 61.0 7:30 AM 64.0 93.5 59.5 72.0 88.0 65.0 64.5 64.0 61.5 7:45 AM 64.0 93.5 60.5 68.0 84.5 65.0 64.5 64.0 63.0 8:00 AM 63.5 93.0 59.0 68.0 88.5 65.0 64.0 63.5 62.0 64.4 8:15 AM 64.0 93.5 58.0 68.5 80.5 65.0 64.0 63.5 62.0 8:30 AM 63.5 93.0 57.5 68.0 81.5 65.5 64.0 63.0 60.5 8:45 AM 66.0 95.5 62.0 78.5 93.5 67.5 65.0 64.5 63.0 9:00 AM 66.5 96.0 58.5 84.5 101.0 68.0 65.0 64.0 62.5 64.5 9:15 AM 63.5 93.5 58.5 70.5 82.5 G5.0 64.0 63.5 61.5 9:30 AM 61.5 91.0 57.5 6G.0 80.0 63.0 62.0 6] .0 59.5 • 9:45 AM 65.0 94.5 58.5 80.5 95.5 66.0 62.5 61 .5 60.5 , 10:00 AM 61.5 91.0 56.5 71.0 89.0 63.5 62.0 61.0 59.0 62.2 10:15 AM 61.5 91.0 58.5 66.5 82.0 63.0 61.5 61.0 60.0 10:30 AM 62.5 92.0 . 58.5 68.5 88.0 64.0 62.5 62.0 60.0 10:45 AM 63.0 92.5 44.5 70.0 87.0 65.0 62.5 62.5 60.5 24-Hour Data: 62.1 111.4 39.0 84.5 1:6.0 64.5 G1.5 G0.0 51.0 61.9 Ld = 63.8 START DATE: 1-22-90 STOP DATE: 1-23-90 Le = 61.0 START TIME: 10:45:01 STOP TIME: 10:45:00 Ln - 56.9 INTERVAL LENGTH: 15 MINUTES Ldn = 65.0 CNEL = 65.5 Notes: All data collected with A-weighted, slow reL ,,re Cf, ...ai+:c> re•r .:accn; r•et.r settings , Leg = equivalent constant sound level for the specified time period SEL = single event level (cumulative noise event integrated over a ]-second period) Lmin = minimum 1-second average sound level ., Lmax = maximum 1-second average sound level ' Lpk = maximum sound level sampled during the specified time interval (8 readings per second) L10 = sound level exceeded 10 percent of the time • P L33 = sound level exceeded 33 percent of the time L50 = sound level exceeded 50 percent of the time L90 = sound level exceeded 90 percent of the time Ld = average daytime (7 a.m. - 7 p.m.) sound level Le = average evening (7 p.m. - 10 p.m.) sound level Ln = average nighttime (10 p.m. - 7 a.m.) sound level , Ldn = day-night weighted average sound level CNEL = community noise equivalent level Rounding errors cause 24-hour Leg computed from 15-minute Leg to differ slightly from the , 24-hour Leg value computed directly by the noise meter ' 1 I 1 I C-16 Noise Data Summary for the Black River Corporate Park Site • Interval 15-Minute Time Interval Statistics Hourly Starting - - - -• Average Time Leg SGI. Lmin Lmax Lpk L10 L33 L50 L90 Leg 11:00 AM 56.0 85.5 51.0 66.0 86.0 59.5 56.0 54.0 52.0 56.1 11:15 AM 56.5 86.0 51.5 66.0 86.0 59.5 56.5 55.0 53.0 _ 11:30 AM 54.5 84.0 51.5 68.0 95.5 56.5 54.5 54.0 52.5 11:45 AM 57.0 86.5 51.5 66.0 80.0 59.5 57.5 56.0 52.5 12:00 PM 56.0 85.5 51.5 63.0 92.5 58.5 56.0 55.0 52.5 56.9 12:15 PM 59.5 89.0 51.5 75.0 90.5 60.5 57.0 55.5 52.5 12:30 PM 55.5 85.0 50.5 70.5 100.0 58.0 55.5 54.0 52.0 12:45 PM 55.0 84.5 50.5 65.5 94.0 57.5 55.0 53.5 52.0 1:00 PM 56.0 85.5 51.0 65.0 90.5 59.0 56.0 55.0 52.0 56.5 1:15 PM 57.5 87.0 51.5 70.0 84.5 59.5 57.0 55.0 52.5 1:30 PM 56.5 86.0 51.0 78.0 103.5 57.5 55.5 54.0 52.5 1:45 PM 56.0 85.5 51.0 73.0 96.5 59.0 55.5 54.5 52.5 2:00 PM 56.0 05.5 52.0 67.0 92.0 58.5 56.0 55.0 53.0 55.9 2:15 PM 55.5 85.0 51 .0 G7.5 96.0 58.0 56.0 55.0 52.5 2:30 PM 56.0 85.5 41.6 71.0 99.5 57.5 53.0 52.0 50.0 2:45 PM 56.0 85.5 4:+.r• 74.0 92.0 56.0 53.0 52.5 51.0 3:00 PM 54.0 33.5 49.0 68.0 82.0 54.5 52.5 52.0 50.5 53.6 ' 3:15 PM 53.0 83.0 49.5 68.5 01.5 55.0 52.5 52.0 50.0 3:30 PM 54.5 84.5 50.0 67.0 02.5 57.0 53.5 .52.5 51.0 3:4 5 PM 52.5 82.0 G2.0 77.5 54.0 52.0 52.0 51.0 4:00 PM 54.0 34.6 62.0 77.0 56.5 54.0 53.0 51.5 54.7 4:15 PM 56.0 85.5 50.0 71.0 82.5 57.5 54.5 53.5 51.5 4:30 PM 54.0 84.0 50.5 62.5 78.0 56.0 54.0 53.0 52.0 4:4r.. nu 54. 77 .5 20.' ',5.5 53.5 52.5 51.5 • 5:00 PM 54.0 03.5 5C.5 65.5 79.0 56.0 53.0 52.5 51.0 53.5 5:15 PM 54.0 83.5 50.5 64.0 80.5 56.5 53.0 52.5 51.5 5:30 PM 53.0 82.5 50.5 60.0 74.0 54.5 52.5 52.0 51.0 1 5:45 PM 53.0 83.0 50.0 62.0 75.5 55.5 52.5 52.0 51.0 6:00 PM 54.5 84.0 50.0 63.0 76.5 58.0 54.0 52.5 51.5 55.1 6:15 PM 56.5 86.0 50.0 66.5 81.0 60.0 55.5 54.0 51.5 6:30 PM 55.5 85.0 49.5 67.0 83.5 59.0 55.0 52.0 51.0 6:45 PM 53.5 83.0 49.5 65.0 79.5 56.0 52.0 51.5 50.0 7:00 PM 57.5 87.0 49.0 69.0 82.5 61.5 56.5 54.0 50.5 56.6 7:15 PM 55.0 84.5 49.5 65.0 79.0 59.0 54.0 51.5 50.5 7:30 PM 53.5 83.5 48.5 65.0 78.5 57.0 51.0 50.5 49.5 7:45 PM 58.5 88.0 48.5 70.0 82.0 62.5 58.0 54.0 50.0 8:00 PM 57.0 86.5 47.5 68.5 86.0 61.5 53.0 51.0 48.5 54.1 8:15 PM 51.5 81.0 47.5 64.0 78.5 51.5 49.5 49.0 48.0 8:30 PM 52.0 81.5 47.0 65.0 78.0 53.0 50.5 49.5 48.0 8:45 PM 53.5 83.5 47.0 62.0 76.5 58.0 53.0 51.0 48.5 • C-17 Noise Data Summary for the Black River Corporate Park Site r Interval 15-Minute Time Interval Statistics Hourly Starting - Average Time Leg SEL Lmin Lmax Lpk L10 L33 L50 L90 Leg 9:00 PM 50.0 79.5 47.0 61.0 74.0 51.0 49.0 48.0 47.5 52.2 9:15 PM 53.5 83.0 47.5 65.5 78.0 56.0 51.0 50.0 48.5 9:30 PM 50.5 80.0 47.5 62.0 74.5 51.5 50.0 49.5 48.0 9:45 PM 53.5 83.0 47.0 66.5 79.0 57.0 50.0 49.0 48.0 . 10:00 PM 52.0 81.5 47.5 62.0 76.0 54.0 50.0 49:0 48.5 52.2 10:15 PM 51.5 81.0 47.0 63.0 76.5 54.0 50.5 50.0 48.5 10:30 PM 51.5 81.0 47.0 61.5 74.5 53.5 50.5 49.5 48.0 10:45 PM 53.5 83.0 46.5 65.5 80.0 58.0 50.0 49.0 47.0 11:00 PM 49.5 79.0 46.0 59.0 72.0 52.0 49.5 49.0 47.0 51.5 11:15 PM 51.5 81.0 46.0 63.5 79.0 55.0 49.0 48.0 47.0 11:30 PM 49.0 78.5 46.5 54.5 69.0 51.0 49.0 48.5 47.5 13:45 PM 54.0 83.5 46.0 67.5 83.0 57.0 49.5 48.5 47.5 12:00 AM 48.5 78.5 45.5 60.0 74.0 49.5 48.0 47.5 46.5 49.6 12:35 AM 50.5 80.0 44.0 65.5 79.0 52.0 48.0 47.0 45.0 12:30 AM. 49.0 78.5 43.0 61.0 74.5 53.0 46.5 45.5 44.0 12:45 AM 50.0 79.5 43.5 63.5 76.5 53.5 47.5 46.0 44.5 1:00 AM 47.0 76.5 43.0 59.5 73.0 48.5 46.0 45.0 44.0 46.9 ' 3 :35 AM 46.0 7!..5 43.0 58.0 70.5 47.0 45.5 45.0 44.0 I 3 :30 AM 47.0 76.5 43.5 54.5 73.5 50.0 45.5 45.0 44.5 1:45 AM 47.5 77.0 44.0 60.5 74.5 49.0 46.5 .46.0 45.0 i 2:00 AM 47.5 77.0 44.0 55.0 68.5 51.0 47.0 46.0 45.0 52.6 2:15 AM 56.5 86.0 43.5 72.0 86.0 55.0 47.0 46.5 45.0 2:30 AM 51.5 81.0 44.0 63.5 80.5 56.0 47.5 46.5 45.0 . :<'" . . !9.0 7:4._ 44.0 61.5 74.0 53.0 47.0 46.0 45.0 3:00 AM 46.5 76.0 43.5 59.0 72.0 47.0 46.0 45.5 44.5 47.8 , 3:35 AM 49.5 79.0 44.5 59.0 72.0 54.0 47.5 47.0 45.5 3:30 AM 47.0 76.5 45.0 51.5 77.5 48.0 47.0 47.0 45.5 3:95 AM 47.5 77.0 44.5 51.5 65.5 48.5 47.5 47.0 46.0 , 4:00 AM 47.5 77.0 45.5 51.5 67.0 48.5 47.5 47.0 46.5 48.8 I_ 4:15 AM 49.0 78.5 46.5 59.0 71.0 50.5 48.5 48.0 47.0 4:30 AM 49.5 79.0 47.0 53.0 69.0 50.0 49.5 49.0 48.5 4:45 AM 49.0 78.5 47.0 52.0 66.5 50.0 49.0 49.0 48.0 5:00 AM 52.0 81.5 47.5 61.0 75.0 55.0 50.5 50.0 48.5 54.2 1 5:15 AM 54.0 83.5 49.5 67.5 80.5 54.0 53.0 52.5 51.0 5:30 AM 55.0 84.5 52.0 69.5 81.5 54.5 53.5 53.0 52.5 5:45 AM 55.0 84.5 52.0 67.0 78.0 56.0 54.0 54.0 53.0 6:00 AM 58.0 87.5 53.0 69.5 83.5 61.0 56.0 55.0 54.0 57.6 6:35 AM 55.5 85.0 53.0 65.5 79.0 57.0 55.0 54.5 54.0 6:30 AM 58.0 87.5 53.5 67.0 81.0 61.0 57.5 56.0 54.5 ' 6:45 AM 58.5 88.0 54.0 66.5 81.0 62.0 58.0 56.5 55.0 1 1 i : C-18 Noise Data Summary for the Black River Corporate Park Site Interval 15-Minute Time Interval Statistics Hourly Starting Average Time Leq SEL Lmin Lmax Lpk L10 L33 L50 L90 Leg 7:00 AM 61.0 90.5 54.5 73.0 90.5 63.5 61.5 59.5 56.0 59.4 7:15 AM 59.5 89.0 54.0 69.0 83.0 62.5 59.0 57.0 55.0 7:30 AM 59.0 88.5 54.5 67.0 81.0 62.5 59.0 57.0 55.5 7:45 AM 57.5 87.0 54.0 64.0 79.0 59.5 57.0 56.0 55.0 8:00 AM 57.5 87.0 53.0 66.0 79.5 60.5 56.5 55.5 54.0 59.1 8:15 AM 59.0 88.5 54.0 67.5 80.5 62.0 58.0 57.0 55.0 8:30 AM 59.0 89.0 53.5 70.0 84.0 63.0 58.0 56.5 54.0 8:45 AM 60.5 90.0 53.0 76.0 90.0 63.0 59.0 56.0 54.0 9:00 AM 56.5 86.0 52.5 64.5 77.5 59.5 56.5 55.5 53.5 61.0 9:15 AM 65.5 95.0 52.0 83.0 98.5 66.0 59.5 57.0 53.5 9:30 AM 56.5 86.0 52.0 71.0 82.0 58.0 55.0 54.5 53.0 9:45 AM 57.5 87.0 53.0 64.5 82.0 61.0 57.5 55.0 52.5 10:00 AM 56.5 86.0 50.5 68.0 80.0 59.5 55.5 53.5 52.0 61.6 10:15 AM 56.5 86.0 51.5 66.5 82.0 59.0 56.0 54.5 52.5 10:30 AM 66.5 96.0 52.0 83.0 99.5 69.5 58.5 55.5 53.0 10:45 AM 56.0 85.5 51.5 67.0 84.0 58.0 55.0 54.0 52.5 24-Hour Data: 56.3 105.6 43.0 83.0 103.5 58.5 54.5 52.5 46.5 56.1 Ld = 57.8 START DATE: 1-23-90 STOP DATE: 1-24-90 Le = 54.6 START TIME: 14:30:03 STOP TIME: 14:30:O0 Ln = 52.5 INTERVAL LENGTH: 15 MINUTES Ldn = 60.0 CNEL = 60.3 Notes: All data collected with A-weighted, slow respunse (8 samples per :second) meter settings Leg = equivalent constant sound level for the specified time period SEL = single event level (cumulative noise event integrated over a 1-second period) • Lmin = minimum 1-second average sound level Lmax = maximum 1-second average sound level I Lpk = maximum sound level sampled during the specified time interval (8 readings per second) L10 = sound level exceeded 10 percent of the time L33 = sound level exceeded 33 percent of the time L50 = sound level exceeded 50 percent of the time L90 = sound level exceeded 90 percent of the time Ld = average daytime (7 a.m. - 7 p.m.) sound level Le = average evening (7 p.m. - 10 p.m.) sound level Ln = average nighttime (10 p.m. - 7 a.m.) sound level Ldn = day-night weighted average sound level CNEL = community noise equivalent level Rounding errors cause 24-hour Leg computed from 15-minute Leg to differ slightly from the 24-hour Leg value computed directly by the noise meter C-19 . . • • dBA PERCENT1LL DISTRIBUTIONS 75 - --- n 70 - M LI ' LI Po -r; 65 - coc2 ._./ ...,:, _1 li se ,I.b. W ...I 0,4 1116immi .. > Li41•”...., _1 60 - 6..••• Cr k+ISI ••,""I 0 D c.v......, t) (I) 144cillikillikliL . 0,:I Ike mi so 55 - ty ,' czo CL. arca, 0_ cvizia, 0 "zoo Z 50 -. . D o 0 , ' m co .0 ri 45 - hi ' • 40 I I I I I I 1 I 1 • 0 20 40 60 80 - 100 PERCENT OF TIME EXCEEDING NOISEc LEVEL 0 PEASLEY SITE + BLACK SITE . ____. _ . __...,. _ _,, .____ _ . ___ 1 _; .,, --1 r- '' \,--— - _ --1 , ___. 1 - MINUTE TIME HISTORIES 75 - I m - 70 - 11' j • 65 - I i1` j La • 40111 ' ` ) 11*1 11 . I I . I 40 ki j kii) in z ' i 4 )1111if , 111 11( 1. 1 i 0 60 - ij I , J 'WI "4 1 v) 1 1 HI ill,, lit I 1 tiii w , 1 1 1'1 i 1 r 1 ( 1 (' ,J. , ',', 1 i 1 I k ' i < 1 1 #r 11 1 JLI I I il 1 I 1 w 50 'I 4. ilifljt 111 'i ? - 41,IN ---- li li f I 45 - , 40 - I t 1 , 11 AM 2 PM 5 PM 8 PM 11 PM 2 AM 5 AM 8 AM 11 AM TIME OF DAY • PEASLEY SITE BLACK SITE APPENDIX D Foundation and Seismic Analysis Il Golder Associates Inc. RECEIVED aCONSULTING ENGINEERS JAN 26 199U INCA ENGINEERS January 25, 1990 Our ref: 903-1005 r INCA Engineers Inc. 11820 Northup Way, E. Bldg. Bellevue, Washington 98003 ATTENTION: Mr. Dan Russell RE: GEOTECHNICAL INPUT FOR EIS TRACTS A AND B BLACK RIVER CORPORATE PARK RENTON, WASHINGTON Dear Dan: The purpose of this letter is to provide sufficient response to the EIS process necessary to determine the impacts of construction during the installation of the foundation systems required for the proposed buildings. In preparing this letter we have reviewed the Preliminary Soil and Foundation Investigation Report, dated April 9, 1979. Based on discussions with the project architect we understand the proposed office park would include buildings ranging between one and-seven stories in height. In summary, we have determined that for the standard foundation support systems considered feasible for this site, there are no perceived impacts on the environment as it relates to the construction process or final product. For structures ranging between one and two stories in height we would expect a preload to be used for site preparation and conventional shallow foundations used for the support of the building. Impacts associated with this type of operation, as it relates to the foundation system would be associated with the transport of fill material to the site for preloading, and I the use of a clean well graded structural backfill. Based on our experience in the project area, structures over two stories typically require deep foundation support. The two standard pile types used in this area for deep foundation L ` support are driven steel pipe piles and drilled auger cast-in-place piles. In general, for the range of loads anticipated by the project structural engineer, and the economics of the pile alternatives, the auger cast-in-place pile would probably be the foundation support system of choice by the owner and engineer. Auger cast piles in this area are typically 40 to 60 feet in length and are designed for an allowable capacity of approximately 50 tons. Based on numerous projects we have been involved in with using auger cast piles, there are no GOLDER ASSOCIATES INC.•415c••LETM AVENUE N.E..REDMOND(SEATTLE).WASHINGTON.U S.A.98052•TEL.1206)B83-0777•FACSIMILE(206)BE2 549E•TELEX 5106002944 OFFICES IN UN(:ED STA•ES•CANADA•UNITED KINGDOM•SWEDEN•AUSTRALIA , January 22, 1990 2 903-1005 perceived impacts on the environment during construction for this system. Steel pipe piles i are typically driven 40 to 60 feet below existing ground surface and are designed for an allowable capacity of 70 to 100 tons. If the steel pipe pile support system is selected, we would expect ground vibration and noise during the pile driving to be of concern. However, based on our experience during the pile driving for the S.W. 7th Street bridge spanning the P-1 Channel, which is supported on driven steel pipe piles, we would not expect any noticeable or serious impact related to the installation of driven steel pipe piles. t We understand that seismic design input is also required for this project. As project geotechnical engineer for the Renton Waste Water Treatment Plant immediately adjacent to the site, we not only provided detailed preload and pile design recommendations but also completed seismic design studies. Those details have been provided to you in an earlier transmittal. -- If you have any questions or require additional clarification following your review of this letter report, please do not hesitate to call. Sincerely, DER ASSOCIATES INC. %cL„...t. .., David M. otton, P.E. • Associate , P , DMC/cla cc: Mark Miller, Vice President of Development, FirstCity Development V • Golder Associates APPENDIX E Air Quality Background and Modeling • APPENDIX E AIR QUALITY BACKGROUND AND MODELING PHYSIOLOGICAL EFFECTS OF CARBON MONOXIDE Carbon monoxide (CO) is a colorless, odorless, and tasteless air pollutant affecting both the cardiovascular system (the heart and circulatory systems) and the central nervous system. The major medical effects from CO inhalation are caused by reduced oxygen transport to body tissues. Heart and brain tissues are especially sensitive to reduced oxygen availability. Hemoglobin molecules in the bloodstream provide the mechanism for transporting oxygen from the lungs to the tissues of the body. Oxygen diffuses into the bloodstream from air in the lungs and then binds to hemoglobin molecules. Metabolic processes keep oxygen levels low in body tissues, resulting in the release of oxygen from hemoglobin molecules and subsequent diffusion to body tissues. The normal concentration of oxygen in air (about 21 percent by volume for dry air) will typically saturate 97-98 percent' of the blood's hemoglobin with oxygen. CO also combines readily with hemoglobin, forming carboxyhemoglobin (COHb). Because CO binds 200-250 times more readily with hemoglobin than does oxygen, small a- mounts of CO can saturate a large proportion of the blood's hemoglobin. When bound to hemoglobin, CO produces two effects: it reduces the total oxygen transport capacity of the circulatory system, and it reduces the rate at which the available oxygen is released from the blood to body tissues. This second effect makes CO poisoning more serious than a compa- rable level of simple anemia. There is also increasing evidence of a direct CO toxicity effect on cellular metabolism (Gutierrez 1982, McGrath 1982). THRESHOLDS AT WHICH EFFECTS OCCUR Normal metabolic processes produce CO, converting 0.3-0.7 percent of the blood's hemoglobin to COHb. Laboratory studies have shown that physiological effects on the cardiovascular and central nervous systems can occur at COHb levels of 2.5-4.0 percent. There is no evidence of a threshold effect, even at these low COHb levels (Goldsmith 1986). Some studies claim to have detected cardiovascular effects at COHb levels at 2 percent. Reduced vigilance and impaired performance of complex tasks have been reported for COHb levels of 5 percent (Gutierrez 1982, U.S. Environmental Protection Agency 1983). COHb levels of 5-10 percent usually produce chest pain in persons with angina (Gutierrez 1982). Persons with coronary vascular disease show significant metabolic chan- ges in the heart muscle when COHb levels exceed 6 percent (Goldsmith and Friberg 1977). Several studies report a reduction in the time until the onset of chest pain in exercising angina patients at 3-5 percent COHb (Coffin and Stokinger 1977, California Air Resources Board 1982, U.S. Environmental Protection Agency 1983). Aggravation of leg pain in h + persons suffering from peripheral vascular disease has been reported at COHb levels below 3 percent (U.S. Environmental Protection Agency 1979). Gutierrez (1982) summarizes the increasingly serious medical problems that occur as COHb levels climb above 10 percent. COHb levels of 10-20 percent typically produce headaches, disturbances in vision, and a decrease in manual dexterity. COHb levels of 20-40 percent produce nausea, vomiting, and drowsiness. Coma and convulsions typically occur at COHb levels of 40-60 percent (with brain damage also occurring in some cases). Death usually occurs at COHb levels above 60 percent. a N �, The relationship between CO concentrations in the air and COHb levels in the blood is complex and involves time lags of several hours. Blood volume, hemoglobin content of the blood, breathing rate, and the rate of metabolic CO production all affect the I , COHb level reached after exposure to elevated CO levels in the air. The time lag between CO exposure and maximum COHb levels in the blood occurs in part because normal breathing exchanges only about 10 percent of the air in the lungs with each breath (Menzel and Amdur 1986; Schlesinger 1988). A significant volume of air (about 20-25 percent of total lung capacity) remains unaffected even with maximum inhala- tion and exhalation. Thus, there are significant time lags for diffusion of gases between the inhaled air and the residual air in the lungs. Additional time lags occur due to the rate at which CO diffuses into and out of the blood stream. The U.S. Environmental Protection Agency (1982) has estimated that an 8-hour exposure to fluctuating CO levels that average 9 ppm (the federal 8-hour standard) will result in COHb levels of 1.3-1.8 percent for people with normal physiological functions, and in COHb levels of 1.9-2.4 percent for people with sensitive physiological conditions (such as low blood volume, low hemoglobin levels, and high metabolic CO production). An 8- hour exposure to fluctuating CO levels averaging 15 ppm would result in COHb levels of 2.1-2.8 percent in people with normal physiological functions, and in COHb levels of 2.9-3.9 percent in people with sensitive physiological conditions. Ferris (1978)presents COHb estimates for exposures to constant CO concentrations. COHb levels at the end of 8-hour exposures are estimated to be 2.8 percent for a 20 ppm CO exposure, 4.1 percent for a 30 ppm CO exposure, 7.5 percent for a 50 ppm exposure, and 11.3 percent for 100 ppm exposure. Even higher COHb levels would occur later, when equilibrium conditions are reached: 3.3 percent COHb for the 20 ppm exposure, 5.0 percent - COHb for the 30 ppm exposure, 8.4 percent COT-lb for the 50 ppm.exposure, and 14.0 percent COHb for the 100 ppm exposure. - SENSITIVE COMPONENTS OF THE POPULATION Persons with peripheral or coronary vascular disease are considered to be at greatest risk from increased COHb. Between 3.5 and 4 percent of the U.S. population suffer from cardiovascular disease or peripheral vascular disease (U.S. Environmental Protection Agency 1982). More than 2 percent of the U.S. population suffers from stable angina (U.S. EPA 1979). E-2 Other groups considered to be at special risk from CO exposure include: persons with respiratory diseases such as chronic bronchitis, pneumonia, or emphysema; persons suffering from anemia; persons with reduced circulatory and respiratory system functions associated with aging; and fetuses and young infants. ANALYSIS PROCEDURES The results of the air quality analyses summarized in Chapter 3 focus on potential CO concentrations in the immediate vicinity of the First City Developments' Renton, Washington Tract B site. The analysis was structured to evaluate conditions of limited pollutant dispersion (cold temperatures, low wind speeds, and moderate ground level temperature inversions). Such weather conditions typically occur several times each winter, being most easily recognized when fog lasts throughout the day. Modeling analyses were performed using a series of parking garage models developed by Jones & Stokes Associates. A parking garage air quality analysis shares the same general approach used by most other air quality impact assessments. First, a source activity pattern is estimated. This activity pattern is then used to estimate facility emissions. Finally, dispersion modeling procedures are used to estimate incremental impacts on ambient air quality. Parking garage analyses differ from typical stationary or mobile source analyses in the procedures used to evaluate source activity and facility emissions. The dispersion modeling step combines simple box model analyses with standard line source modeling procedures. The overall analysis process is illustrated in Figure B-1. PROJECT DESCRIPTION Two parking garage alternatives are under examination for the proposed Tract B site located north of the Oakesdale Avenue S.W. and S.W. Seventh Street intersection in Ren- ton, Washington. The proposed parking garage alternatives include a three-level parking garage (alternative B1) and a four-level parking garage (alternative B2). Under Alterna- tive Bi, three office buildings would be built totalling 286,300 square feet. Under Alternative B2, one office building would be built totalling 285,000 square feet. Either garage would be completely separate from the surrounding office building(s). Current plans anticipate that construction of either garage would be completed by 1993. At the time of this analysis, the design plans for the garages were incomplete. Those plans indicate that both garages would have a maximum of 800 parking stalls. Alternative B1 would distribute these 800 spaces among three parking garage levels and would provide 496 surface parking stalls. Alternative B2 would distribute 800 spaces in a 4-story parking garage and would provide an additional 551 surface spaces. Specific floor plans for the parking facility, including ramps and entrance and exit lanes, were not available at the time of this analysis. In addition, information is currently unavailable regarding how much of each garage level would be open to natural ventilation, E-3 a key element in the air quality analysis. The initial assumption is that, for each garage, 40 percent of the lower levels would be open. RESULTS OF AIR QUALITY ANALYSES Hourly Trip Patterns by Parking Duration Total Trips Total trip generation forr each associated office project was estimated using standard trip generation rates for general office uses (Institute of Transportation Engineers 1987). Total trip generation is primarily a function of total building square footage. The resulting estimates are as follows: 1 I Alternative B1: 3,019 daily trips, 495 trips in the morning peak hour, and 471 trips in the afternoon peak hour. Alternative B2: 3,009 daily trips, 493 trips in the morning peak hour, and 469 trips in the afternoon peak hour. Trips By Parking Duration Category Vehicle emission rates depend on numerous factors. A major influence is the "operating mode" of the vehicle, which depends on how long the engine has been running, how long the engine was off before being started, and whether the vehicle is equipped with a catalytic converter. To properly estimate vehicle emission rates, vehicle trips to and from the proposed parking garage must be classified into three parking duration categories. Short term parking involves a parking duration of less than 1 hour; intermediate term parking involves durations of 1-4 hours; and long term parking involves durations of 4 hours or more. Vehicles with a catalytic converter revert to a "cold start" mode after a parking duration of 1 hour or more,while vehicles without a catalytic converter revert to a cold start mode after parking durations of 4 hours or more. G; The daily and peak hour trip estimates noted above were used as a guide in developing hourly vehicle arrival and departure patterns for each of the three parking duration categories. Use of the parking garage and associated surface parking was modeled by developing short-term, intermediate-term, and long-term parking activity patterns based on assumed arrival times (in 15-minute intervals) and variable parking durations. Activity associated with short-term parking was simulated by a mix of 30 and 45 minute parking durations. Intermediate-term parking activity was modeled with parking durations of 2 and 2.5 hours. Long-term parking activity estimates used parking durations of 8 and 9 hours. The trip simulation model uses a library of previously-defined parking activity patterns,with activity indicated as vehicle movements per 100 parking spaces. Parking activ- ity for a specific project is simulated by allocating parking spaces to an appropriate E-4 combination of individual parking patterns. Pattern selection and parking space allocations can be varied until the resulting total trip pattern approximates independent estimates of daily and/or peak hour trip generation. The allocation of spaces to different parking durations represents a convenient analysis procedure, not a parking management assumption. No restriction on the use of individual parking stalls in the garage is implied. Table B-1 shows the nine parking activity patterns used to simulate use of garage alternative B1 plus surface parking. Note that data in Table B-1 are phrased as vehicle movements per 100 parking spaces. Table B-2 summarizes the resulting trip pattern in terms of actual vehicle trips. The simulated trip pattern matches the peak hour and daily trip generation estimates derived from the latest Trip Generation manual (Institute of Transportation Engineers 1987). Table B-3 shows the trip patterns for only the 800 spaces associated with garage alternative B1. To get from Table B-1 to B-3, all short and medium- term surface parking was deleted and the number of long-term parking spaces in table B-1 were reduced from 1178 to 800 (in Table B-3) based on the ratio of long-term parking pattern percentages found in Table B-3. Table B-4 summarizes the resulting trip pattern in terms of actual vehicle trips for the alternative B1 garage. Tables B-5 through B-8 repeat the parking activity pattern analysis for alternative B2. Table B-5 shows the nine parking activity patterns for the alternative B2 garage plus surface parking. Table B-6 summarizes the resulting trip patterns. Table B-7 shows the parking activity patterns for the B2 garage only and Table B-8 summarizes the B2 garage only trip patterns. Vehicle Emission Rate Estimates Vehicle emission rates used in the air quality impacts analysis were derived from the Environmental Protection Agency's MOBILE 4 program. Emission rates were estimated separately for entering and exiting vehicles for the long-term parking duration category. Emission rate estimates were developed for 1993, and assumed a 40 degree Fahrenheit air temperature. Two programs were used to develop input information needed by MOBILE 4. A program called FLEETMIX was used to estimate the relative composition of vehicles that would use the garages in each year from 1985 through 2020, along with the fuel types and catalyst percentages for each vehicle class. Table B-9 shows the vehicle fleet mixes computed by FLEETMIX. Table B-10 shows the results of the TRIPMODE program. TRIPMODE was used _ to create operating mode estimates for different trip types. For the parking garage alternatives, only long-term entering and exiting trip information is used as MOBILE 4 `._ inputs. Short and intermediate-term trips are assumed to use only surface parking, rather than the parking garages. Using the information from FLEETMIX and TRIPMODE, several MOBILE 4 runs were made. All runs were made for the 1993 calendar year, the expected completion date for the garages. Separate runs were made for entering and exiting modes with and without E-5 f inspection and maintenance (I&M) programs (Tables B-11 and B-12). The Puget Sound Air Pollution Control Association (PSAPCA) has an I&M program in effect that includes Renton. However, the I&M program does not extend south of Renton and thus, commuters to these office buildings from points south, such as Kent and Auburn, would not be subject to the I&M program (Raymond, pers. comm.). To correct for this, the MOBILE 4 program was run with and without the I&M program and the resulting emission rates from these two runs were averaged. The average I&M/non-I&M emission rate was used in the parking facility emissions model. Both runs assumed vehicles averaged 7 mph inside of the parking garage. Tables B-13 (with I&M) and B-14 (without I&M) were run for vehicles with an average speed of 5 mph. These runs were made because 5 mph cold start emission rates are needed to estimate total emission rates. The cold start emission rates from these two MOBILE 4 runs were averaged to account for the location of this project in an area fre- quented by a mix of I&M/non I&M vehicles. it Parking Facility Emissions Analysis Features of the Parking Facility Emissions Model A parking facility emissions model developed by Jones & Stokes Associates was used to estimate total emission within each parking garage alternative based on hourly vehicle r' activity patterns and the available design characteristics. The parking facility emissions model was run for hourly parking garage activity patterns during the 10 a.m. to 6 p.m. period. Both garages are assumed to be used only for long-term parking, due to the large number of surface spaces available for short and intermediate-term parking Emissions From Traveling Vehicles. The equations used in the MOBILE 4 emissions model include speed-dependent patterns of vehicle idling, acceleration, cruising, and deceleration (Smith and Aldrich 1977; Darlington, pers. comm.). The parking facility emissions model performs separate evaluations of the traveling !' and idling components of the overall vehicle activity pattern. The model includes param- eters to account for extra travel while searching for an empty parking space or for an exit. Vehicle travel is estimated as a function of the gross square footage of the facility and the number of levels from the entrance to the top of the facility. Idling Emissions. The parking facility emissions model evaluates the amount of idling accounted for in the MOBILE 4 emission rates and then makes appropriate adjustments for insufficient or excessive idling. The entering vehicle idling time threshold reflects delays at the garage entrance, internal travel distances, and movement conflicts. The exiting vehicle idling time threshold reflects engine warm-up time, internal travel distances, movement conflicts, exit queues, and delays at the garage exit. Because average travel distances are greater for entering vehicles than for exiting vehicles, the use of standard vehicle emission rates will imply more idling time for entering vehicles than for exiting vehicles. This is the opposite of the real situation. To adjust for E-6 this, the entering vehicle idling time threshold is a maximum limit; the exiting vehicle idling time threshold is a minimum required amount. Entering and exiting vehicle idle time adjustment values (seconds per vehicle) are then determined from comparison with the total idling time thresholds. The entering vehicle idle time adjustment (zero or a negative value) represents any excessive idling time inherent in the standard vehicle emission rates. The exiting vehicle idle time adjustment (zero or a positive value) represents any required idling time not accounted for in the standard vehicle emission rates. Cold Start Idle Rates. Complications arise when establishing idle emission rates that accurately reflect vehicle operating mode mixes. Federal vehicle emission testing procedures collect integrated emission samples that include true cold start, hot start, and hot stabilized mode idling emissions. Data from these testing procedures are used to develop computer programs that estimate on-road vehicle emission rates. The hot stabilized idle emission rate is equivalent to the 100 percent hot stabilized running emission rate for a speed between 3 and 7 mph (depending on calendar year and mix of vehicle types). An estimated cold start idle emission rate is derived from the 5-mph 100 percent cold start running emission rate (by converting from a grams-per-mile to a grams-per-minute basis). For simplicity, the hot start idle rate is treated as equal to the hot stabilized idle rate. Weighted cold-hot idle emission rate values are then computed for entering and exiting vehicles. The appropriate weighted cold-hot idle rates are used to calculate the idle emission adjustments. Project-Specific Considerations Parking Emissions Model Results. Parking facility emissions model results for alternative B1 are presented in Table B-15. Hourly CO emissions during the modeled 8- hour period ranged from 0.0 to 88.7 pounds, and averaged 28.7 pounds. Cumulative vehicle travel during this period was 151 miles (26 miles for entering vehicles and 124 miles for exiting vehicles). The idle adjustment procedure produced small reductions in MOBILE 4 emission rates for entering vehicles while producing major increases in emission rates for exiting vehicles. Entering vehicle emission rates were decreased by an average of 25 percent; exiting vehicle emission rates were increased by 334 percent. Parking facility emissions model results for alternative B2 are presented in Table B-16. Hourly CO emissions during the modeled 8-hour period ranged from 0.0 to 102.3 pounds, and averaged 30.4 pounds. Cumulative vehicle travel during this period was 170 miles (30 miles for entering vehicles and 141 miles for exiting vehicles.) The idle adjust procedure produced small reductions in MOBILE 4 emission rates for entering vehicles while producing major increases in emission rates for exiting vehicles. Entering vehicle emission rates were decreased by an average of 24 percent; exiting vehicle emission rates were increased by 305 percent. Overall, the idle adjustment procedure ti E-7 increased cumulative vehicle emissions by 257 percent compared to the basic MOBILE 4 emission rates. Internal Garage CO Levels CO levels inside each level of the garage are primarily a function of vehicle emissions and the extent of wall area open to natural ventilation. For this analysis, 40 percent of the wall opening on each lower level is assumed to be open,to natural ventilation. The top level of each garage alternative is assumed to be completely open. CO levels inside the garage were estimated using a standard "box model" approach: average emissions on a level divided by the gross volume of the level, with this pollutant concentration divided by a ventilation factor (air exchanges per hour). Assumed ceiling heights were 12 feet on the ground level and 10 feet for the other levels. The natural ventilation factor was calculated by adjusting an assumed outside wind speed (1 meter per second, or 2.2 mph) for the extent of open area in the walls of the garage. Overall parking emissions were distributed among garage levels based on the distribution of entering and exiting vehicle travel. Box model evaluations of peak hour emissions for alternative B1 are summarized in Table B-17. Peak. hour CO levels are _` estimated at 31-46 ppm in the lower two floors of the garage. Box model evaluations of 8-hour average emissions for alternative B1 (Table B-18) produced estimates of CO levels inside the garage ranging from 8 to 13 ppm depending on garage level. For parking garage alternative B2, predicted CO concentrations ranged from 14 to 57 ppm for the peak-hour average (Table B-19) and from 4 to 17 ppm for the 8-hour average (Table B-20). CO Concentrations Inside and Outside Each Garage Alternative CO concentrations at locations outside the parking garage will reflect the additive effect of pollutant increments from each level of the garage plus a "background" contribu- tion from local street traffic and other sources. Relative concentration factors for locations outside the garage were taken from the CALINE3 dispersion modeling analyses previously performed for a parking garage with similar footprint dimensions (Jones & Stokes Associates 1987b). Modeled receptor locations were 5 feet above ground at distances of 10, 25, 75, 150, 300, 500, and 1,000 feet from the garage. The CO increments from the parking garage as noted above do not account for other sources of CO in the project area. The other major sources of CO would be vehicle traf- fic at the surface parking lots, and on adjacent streets and freeways. Recognizing this, a peak hour CO concentration of 6 ppm and an 8-hour CO concentration of 3 ppm are assumed as background levels. Incremental CO concentrations attributable to the proposed garage alternative B1 are summarized in Table B-21. Including background CO levels, maximum peak-hour CO ' levels inside garage alternative B1 would be 37-44 ppm inside the enclosed levels of the E-8 1 ; garage. Maximum 8-hour CO concentrations inside garage B1 would be 12-15 ppm. These concentrations meet OSHA requirements (35 ppm 8-hour average) but exceed the values of the federal and state ambient air quality standards. For the assumed garage activity pattern and facade design, potential CO increments from the parking garage exceed federal and state standards for both the 1-hour and 8-hour time periods even without including background contribution. Potential peak hour CO increments attributable to the garage would range from 67 ppm at 10 feet to 15 ppm at 1,000 feet from the garage. Potential 8-hour average CO increments attributable to the garage would vary from 20 ppm at 10 feet to 5 ppm at 1,000 feet from the garage. The federal and state 1-hour CO standard of 35 ppm would be exceeded out beyond 300 feet from the garage. The federal and state 8-hour standards of 9 ppm would be exceeded beyond 500 feet from the garage (including 3 ppm background). Incremental CO concentrations attributable to the proposed garage alternative B2 are summarized in Table B-22. Maximum peak-hour carbon monoxide levels inside garage alternative B2 would be 26-49 ppm inside the enclosed levels of the garage. Maximum 8- hour CO concentrations inside garage B2 would be 9-16 ppm (including 6 ppm background). These concentrations meet OSHA requirements, but exceed the numerical value of the federal and state ambient air quality standards. For the assumed garage activity pattern and facade design, potential CO increments from the parking garage exceed federal and state standards for both the 1-hour and 8-hour time periods. Potential peak hour CO increments attributable to the garage would vary from 87 ppm at 10 feet to 21 ppm at 1,000 feet from the garage. Potential 8-hour average CO increments attributable to the garage would vary from 26 ppm at 10 feet to 6 ppm at 1,000 feet from the garage. The federal and state 1-hour standard of 35 ppm would be ex- ceeded up to 1,000 feet from the garage. The federal and state 8-hour standards of 9 ppm would be exceeded beyond 1,000 feet from the garage (with 3 ppm background included). MITIGATION ALTERNATIVES Some simple mitigation measures easily adopted by the project applicant can be used to reduce or eliminate the potential CO problems associated with either parking garage alternative. These mitigation measures are discussed below. Alternative B1 Additional Exit Lane The simplest approach to relieving the CO problems associated with alternative B1 is to add an additional exit lane. With two exit lanes, CO emissions during times of peak exit demand are greatly reduced as cars have a significantly shorter wait before exiting. Parking facility emissions model results for alternative B1 with two exit lanes are presented in Table B-23. Hourly CO emissions during the modeled 8-hour period ranged E-9 it from 0.0 to 24.8 pounds, and averaged 8.1 pounds. Cumulative vehicle travel during this period was 167 miles (26 miles for entering vehicles and 141 miles for exiting vehicles). Internal CO levels in garage alternative Bi equal 7.3-10.8 ppm (13.3-16.8 ppm with background) for the one-hour average (Table B-24) and 1.5-4.3 ppm (4.5-7.3 ppm with background) for the eight-hour average (Table B-25). The maximum outside 1-hour concentrations range from 23.4 ppm at 10 feet to 10.0 ppm at 1,000 feet with background CO included (Table B-26). Similarly, maximum 8-hour concentrations range from 8.2 ppm at 10 feet to 4.2 at 1,000 feet. All of these maxima are less than the existing Washington state and federal.CO ambient standards. ;I Therefore, alternative B1 can easily meet both the 1-hour and 8-hour ambient CO standards by installing two exit lanes and by ensuring that at least 40 percent of the garage lower levels are open. Alternative B2 Additional Exit Lane �I For alternative B2, adding an extra exit lane is considered the simplest mitigation measure for reducing total CO emissions. Parking facility emissions model results for alternative B2 with two exit lanes are presented in Table B-27. Hourly CO emissions during the modeled 8-hour period ranged from 0.0 to 25.3 pounds, and averaged 8.9 pounds. Cumulative vehicle travel during this period was 188 miles (29 miles for entering vehicles and 159 miles for exiting vehicles). Internal CO levels for garage alternative B2 with two exit lanes equals 3.3-14.2 ppm i ' (9.3-20.2 ppm with background) for the one-hour average (Table B-28) and 1.2-5.0.ppm (4.2-8.0 ppm with background) for the eight-hour average (Table B-29). The maximum outside 1-hour concentrations range from 27.8 ppm at 10 feet to 11.2 ppm at 1,000 feet with background CO included (Table B-30). Similarly, maximum 8-hour concentrations range from 10.5 ppm at 10 feet to 4.8 ppm at 1,000 feet (with background). The above analysis shows that by adding two exit lanes,peak hour concentrations are reduced to below the 35 ppm ambient standard. However, the predicted 8-hour average concentrations exceed the 9 ppm ambient standard once the 3 ppm background is included. Workers in the adjacent 7-story office building would be exposed to CO levels exceeding the 8-hour ambient standard. Increase Facade Openings !- In the next step, the analysis is repeated by assuming that each level of the B2 - , parking garage is 55 percent open, rather than the 40 percent that has been assumed heretofore. Rerunning the box models for alternative B2 with 55 percent facade openings results in internal peak hour CO levels ranging from 2.4-10.3 ppm (8.4-16.3 ppm with background) E-10 (Table B-31) and 8-hour levels ranging from 0.9-3.6 ppm (3.9-6.6 ppm with background) (Table B-32). Dispersion modeling results (Table B-33) show that the maximum 1-hour concentrations range from 21.7 ppm at 10 feet to 9.8 ppm at 1,000 feet with background CO included. Maximum 8-hour concentrations range from 8.5 ppm at 10 feet to 4.3 ppm at 1,000 feet. At 25 feet, the distance of the adjacent 7-story office building, maximum predicted CO concentrations equal 8.3 ppm, less than the 8-hour ambient standard of 9.0 ppm. Based on these modeling results, it appears that if parking garage alternative B2 is selected, it should, at a minimum, have two exit lanes and a 55 percent of the lower levels open. E-11 References Aldand, G.A.,T.D. Hartwell,T.R.Johnson, and R. W. Whitmore. 1985. Measuring human exposure to carbon monoxide in Washington, D.C. and Denver, Colorado during the winter of 1982-1983. Environmental Science and Technology 19(10):911-916. American Conference of Governmental and Industrial Hygienists. 1982. Industrial ventilation: a manual of recommended practice. 17th edition. Lansing, MI Barratt, R. S. 1985. Air pollution problems in car parks. Environmental Pollution Series (Series B) 9(3): 179-192. Boldon, C. M. 1985. On ventilation for parking facilities. Paper presented at the annual convention of the National Parking Association, May 20, 1985, Orlando, Florida. International Parking Designs, Inc. Sherman Oaks, California. California Air Resources Board. 1982. California ambient air quality standards for carbon monoxide (sea level). Research Division. Sacramento, CA. Coffin, D. L. and H. E. Stokinger. 1977. Biological effects of air pollutants. Pp. 231-360 in A.C. Stern (ed.), Air pollution. 3rd edition. Volume II - the effects of air pollution. Academic Press. New York, NY. Ferris, B. G., Jr. 1978. Health effects of exposure to low levels of regulated air pollutants: a critical review. Journal of the Air Pollution Control Association 28(5):482-497. Flachsbart P. G. and W. R. Ott. 1984. Field surveys of carbon monoxide in commercial settings using personal exposure monitors. (EPA-600/4-84-019.) U.S. Environmental Protection Agency. Washington, DC. Goldsmith, J. R. 1986. Effects on human health. Pp. 391-463 in A. C. Stern (ed.), Air pollution, 3rd edition.Volume VI-Supplement to air pollutants, their transformation, transport, and effects. Academic Press. New York, NY. Goldsmith J. R. and L. T. Friberg. 1977. Effects of air pollution on human health. Pp. 457-610. in A. C. Stern (ed.), Air pollution, 3rd edition. Volume VI-Supplement to air pollutants, their transformation, transport, and effects. Academic Press. New York, NY. Gutierrez, G. 1982. Carbon monoxide toxicity. Pages 127-145 in J.J. McGrath and C.D. Barnes (eds.), Air pollution physiological effects. Academic Press. New York, NY. Hama, G. M., W. G. Fredrick, and H. G. Monteith. 1961. Air flow requirements for underground parking garages. American Industrial Hygiene Journal 22(6):462-470. Ingalls, M. N. 1981. Estimating mobile source pollutants in microscale exposure situations. (EPA-460/3-81-021.) U. S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control. Ann Arbor, MI. E-12 Institute of Transportation Engineers. 1987. Trip generation. 4th edition. Washington, DC. Jones & Stokes Associates, Inc. 1987. Draft environmental impact report for the East-End parking garage. Prepared for: City of Sacramento Department of Public Works, Parking Division. Sacramento, CA. McGrath, J. J. 1982. Physiological effects of carbon monoxide. Pp. 147-181 in J.J. McGrath and C.D. Barnes (eds.), Air pollution physiological effects. Academic Press. New York, NY. Menzel, D. B. and M. O. Amdur. 1986. Chapter 12: Toxic responses of the respiratory system. Pp 330-358 in C. C. Klaassen, M.O.Amdur, and J. Doull, (eds.), Casarett and Doull's toxicology: the basic science of poisons. 3rd edition. Macmillan Publishing Company. New York, NY. Ott, W. R. 1985. Total human exposure. Environmental Science & Technology 19(10):880-886. Schlesinger, R. B. 1988. Biological disposition of airborne particles: basic principles and application to vehicular emissions. Pp. 239-298 in A. Y. Watson, R. R. Bates, and D. Kennedy (eds.), Air pollution, the automobile, and public health. National Academy Press. Washington, DC. Sculley, R. D. 1988. Modeling parking garage air quality impacts. Unpublished manuscript. Jones & Stokes Associates, Inc. Sacramento, CA. Smith, M. and T.Aldrich. 1977. Development of revised light-duty-vehicle emission-average speed relationships. (EPA-460/3-77-011.) U.S. Environmental Protection Agency, Office of Mobile Source Air Pollution Control. Ann Arbor, MI. U.S. Environmental Protection Agency. 1979. Air quality criteria for carbon monoxide. (EPA-600/8-79-022). Washington, DC. . 1980. Significant harm levels for carbon monoxide. Draft. . 1982. Sensitivity analysis on Coburn model predictions of carboxyhemoglobin levels associated with alternative carbon monoxide standards.Draft staff paper.Office of air quality planning and standards. Research Triangle Park, NC. . 1983. Revised evaluation of health effects associated with carbon monoxide exposure: an addendum to the 1979 air quality criteria document for carbon monoxide. External review draft. (EPA-600/8-83-033A.) Office of Health and Environmental Assessment. Washington, DC. Wright, G. R., S. Jewczyk, J. Onrot, P. Tomlinson, and R. J. Shepard. 1975. Carbon monoxide in the urban atmosphere: hazards to the pedestrian and street-worker. Archives of Environmental Health 30:123-129. E-13 Personal Communications Raymond, John. Environmental Specialist. Washington Department of Ecology. Olympia, Washington. January 16, 1990 - telephone conversation. E-14 ELEMENTS OF A PARKING GARAGE AIR QUALITY ANALYSIS GARAGE TRIP LAYOUT GENERATION PATTERNS INTERNAL VEHICLE VEHICLE EMISSION TRAVEL RATES V EMISSIONS WITHIN GARAGE V INTERNAL POLLUTANT CONCENTRATIONS POLLUTANT CONCENTRATIONS OUTSIDE GARAGE MITIGATION ANALYSES Source: Jones & Stokes Associates, Inc. Tale 1-1.NctIy fattecu Oud To Etiolate Traffic Tor lento 1ltecutlee 11-Gum 1 115Eece Pacllel P1TT111 P11LIE0 11161 17Q101 PM P0t1510 P111110 1CTITItT MTTL111 IT 7105 0f DU (4OPINL1t7 PII 101 SPiCL5 Of I101C1110 P111I10 DUI/1101 C1tI00RTI COOL DU11tt01 T0110PHS OCCOPIICT OCCOPUC? CHIT- 10911111 1- 1- 2- 3- 1- 5- 6- 1- 1- S - 11- 11- 1- 1- 2- 3- 1- S- 1- 1- 1- S- 11- 11- DIM 101HR 1100131 PH IPICE IOCT01 /1CT01 OM 010ICTIO1 1 11 2 II 1 11 1 11 S 11 6 I 1 LN 1 11 I Lt 11 IN 11 Im I 1 Pm 2 PI 3 PI 1 PI S P1 1 PN 1 PI 1 PM 1 PI 11 PI 11 PI I TOM 11011 TL11 Pl16I10 P11IH1: ST SUCH• 11 6 1.51 3.35 11.51 55.11 1.11 SITU 1 1 1 1 1 1 1 1 11 11 31 25 5 11 IS 75 25 1 0 1 1 1 1 1 335 HIT 1 1 1 1 1 1 1 1 1 15 25 25 11 21 11 115 65 1 1 1 1 1 1 1 115 ET SPICES 1 21 17 1.75 1.35 21.0E 15.11 1.1% SITU 1 1 1 1 1 0 1 1 1 1 60 15 11 31 11 1 1 1 1 1 1 1 1 1 235 IIIf 1 1 1 1 1 1 1 1 1 1 1 5S 11 SS 31 5 1 1 1 1 1 1 1 1 235 ST SPICES 1 11 1 1.51 1.55 37.1% 51.0E 1.01 1111e 1 1 1 1 1 1 1 1 11 15 65 10 IS 75 11 11 II 35 1 1 1 1 1 1 755 HI? 1 1 1 1 1 1 1 1 31 15 1S 11 11 IS IS 11 11 75 1 1 1 1 1 1 755 00081110 SEOE?TERN P11T1005: ST SPILLS= 63 1.62 3.14 11.15% 11.31% 1.11% 11111 1.0 1.1 1.1 1.1 1.1 1.0 1.0 1.1 21.1 21.3 13.1 13.5 61.7 41.1 41.1 17.3 26.1 1.0 1.0 1.0 1.1 0.1 1.1 0.1 314 HIT 1.1 1.1 1.1 1.1 1.1 0.1 1.0 1.0 1.1 11.1 25.6 51.2 61.5 53.1 41.2 52.1 31.1- 11.2 1.0 1.1 0.1 1.0 0.0 1.1 311 111111101111 scam P111116 P1tIII3S: It SPILLS 1 25 116 2.51 2.75 . 62.5% 11.11 0.0% 10711 1 1 1 1 1 1 1 20 35 35 3S 15 25 35 3S 21 1 1 1 1 1 1 1 1 275 RUT 1 1 1 1 1 0 1 0 1 5 30 11 35 31 31 75 11 10 1 0 1 1 0 1 275 IT SPICES 1 25 107 2.50 1.15 61.31 10.1% 1.0% LITER 0 1 1 1 1 0 0 1 11 25 31 25 10 31 15 1 1 0 1 0 1 1 1 1 11S III? 1 1 1 1 0 1 1 1 1 0 5 15 11 25 20 20 30 0 0 1 1 1 1 1 115 IT SPICES= 25 101 2.00 2.25 50.0% 15.01 0.0% IITER 1 0 1 1 1 0 0 1 25 35 40 25 15 15 11 1 1 1 0 0 1 1 1 1 225 Ulf 1 1 1 1 1 0 1 1 1 0 25 15 11 25 15 IS 11 0 0 1 1 0 0 1 225 CO0111!0 IITL10E0I0TL 1111 P11TL1IS: IT SPICES 1 IS 2.33 2.15 51.11t 11.67% 1.01% 11100 0.0 1.1 1.1 1.1 1.1 1.0 0.0 6.7 21.3 31.7 35.0 21.1 16.7 16.7 31.1 1.7 1.1 1.1 1.0 1.0 1.1 1.1 1.1 1.1 21S 111? 1.1 1.1 1.1 1.1 1.1 1.0 1.0 1.0 1.0 1.7 20.0 10.1 35.0 16.7 21.7 33.3 17.7 11.3 1.0 1.1 1.1 1.0 1.0 0.0 -215 L010 TUB P111110 PLUMS: LT SPICIS 1 107 1 1 1 211 1.11 1.01 11.1% 111.1% 1.01 11110 0 1 1 1 1 1 1 1 101 1 0 1 1 1 1 1 1 1 1 1 1 1 1 1 101 Ills 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Ill 1 1 1 1 1 1 101 LT SPICES= S2S 211 1.11 1.11 S3.31 111.1% 1.1% Eat[ 1 1 1 1 1 0 1 11 11 31 1 1 1 20 1 1 1 1 1 1 1 1 1 1 111 1111 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 11 37 21 1 1 1 1 1 101 LT SPICES= 150 211 1.01 1.11 66.71 101.11 0.01 SITU 0 1 1 1 1 1 1 25 51 1 25 1 0 1 1 1 1 1 1 1 1 1 1 1 101 III? 1 1 1 1 1 1 1 1 0 1 0 1 1 1 1 25 11 1 25 1 1 1 1 1 111 COII110D LOIO TERN MUM: LT SPIC0S 1 1171 I.II 1.01 51.22% 110.01% 1.00E UM 0.1 0.0 1.1 1.0 1.1 1.0 0.0 11.1 31.5 23.6 3.2 1.1 1.1 15.1 1.1 1.1 1.0 1.0 1.0 1.0 1.0 1.1 1.1 1.1 Ill 1111 1.1 1.1 1.1 1.1 1.1 0.1 1.0 0.1 0.1 0.1 0.0 1.0 0.1 1.1 1.1 11.1 24.0 11.2 11.1 1.1 1.1 1.1 1.1 0.1 111 Table 1-2. leuli kltele'moats fir labs Utelutive 11-G1roge 1!Ware Putlsg Il1ICLt IOI1OUT AID OCCOPUCI 101111i: PUIUG IU11IG 1110 1111111 RU PUIIIG COIPOSIT!PUIIIG ACTIVITY 0111111 1!1111 0P DII (TOTAL 104111111) DRUM 011111101 TOI107UI OCCOPUC! OCCUPUCT C1111- 10 1111T I- 1- 2- 1- 1- S- I- 7- 1- 1 - 11- 11- 1- 1- 2- ]- 4- 5- i- 1- 1- 1- 11- 11- DIIL! TAUG011 (100uu1 Ptt SP1U PLCT01 ►ICT01 OTtt DIIUC1101 1 U 1 U 1 U 1 U S U I U 7 U 1 U 1 U l0 U 11 11 1 l PI 2 PI 1 PI 1 PI S PI 1 PI I PI 1 PI I PI 11 PI 11 PI I TOTAL Halt?III PUIIIG:�AYM 11$ICIS= Il 1.12 3.11 21.11 11.41 1.11 Inn 1 1 1 1 1 1 1 1 11 11 11 21 21 11 21 21 12 1 1 1 1 1 1 1 111 1111 1 1 1 1 1 1 1 1 1 12 11 22 II 21 21 21 1S 1 1 1 1 1 1 1 103 11T1111011T1 Till PUIIIG: IT HIICIS= 15 2.31 2.15 50.11 11.7% 1.0% DUI 1 1 1 1 1 0 0 5 11 21 20 21 11 21 21 5 1 1 1 1 1 1 1 1 111 tl11 1 1 1 0 1 0 1 1 1 1 15 21 20 21 11 2S 2S 11 1 1 1 1 1 1 111 1016 TUN 0111IG: LT SPICIS= 1111 1.01 1.11 51.21 101.11 1.01 11111 1 1 1 1 1 0 0 217 115 271 11 1 1 115 0 1 1 0 1 0 1 1 1 1 1,171 III? 1 1 1 0 1 0 0 1 1 0 1 1 1 0 1 227 211 450 221 1 1 1 1 1 1,171 COIPOSITS PIILIIC PITIDI: TOTAL SPICIS= 1,211 7.51 1.11 52.51 11.21 1.0% 15000 0 1 1 0 1 0 1 I11 111 312 11 41 11 272 17 25 12 1 0 0 0 1 1 1 1,511 111T 1 1 1 0 1 0 0 0 ) 11 21 45 56 Il 11 I71 721 III 221 1 1 1 1 1 1,511 TOAL 1101110 101,1I[ITS: 1 0 I 0 0 0 0 210 411 125 101 17 11 275 10 211 771 172 217 1 1 1 1 I 1,022 AYIIACI SPICIS OCCOP160: 0 0 1 0 0 0 0 101 111 151 1031 1011 1010 1117 1241 1121 145 151 111 2 1 1 1 0 1PI11Gt GUACL OCCOPUCT 41CT01: 01 It 11 01 0% 01 0% 11 111 111 10% 12% 12% II% 11% 17% 15% 15% 91 0% 0% 01 1% 0% CU111 OCCUPUCI AT SID OF 0001: 01 0% 01 01 0% 0% 0% 17% 551 111 12% 121 51% 11% 91% 17% 57% 17% 0% 11 0% 1t 0% 0% Sill i Tulle I-3. hilly Pettus,Used Te!lailate Tutllc for tntee Intuitive II -Gasp Partly Oily -C• 1321 • j '' PLTTIII P0III16 DIILT 1THIGl IIIT Il0II1G PIIIIIG LCTITITI PITTIIl1ITTlll 01 DII (I011111TSPI1 Ill SPICI1 OF IIDICITID PIIIIIG DOIITI01 CITIGOITI CODI /01/1101 MUMS OCCOPICI OCCUPIICI CISl1- 10111I1T I- 1- 1- 1- I- 5- I - 1 - 1- 1 - 11- 11- I- I - 2- 3- 1- S- I- 1 - I- 1 - 11- 11- DELI 101111 (100111 OH MCI 11CT0e 11CT0I 0111 DIISCt101 1 1M 2 1M 3 1M 1 II S All III 7 11 1 10 1 IA 10 IA 11 IA I 1 PM 2 PM 3 PM 1 PI S PI I PA 1 PI I PI 1 PM 11 PM 11 PM 1 TOTAL 11011 Tlll P0II116 P11TH11: ST SPICIS• I L SI 3.35 11.5% 55.11 1.11 IITH 1 1 1 1 1 1 0 1 11 11 31 25 5 11 15 15 25 1 1 1 1 1 1 1 335 1111 1 1 1 1 1 1 1 1 1 15 25 25 II 21 71 IIS IS 1 1 1 1 1 1 1 235 ST RICH• 1 11 1.15 2.35 21.1% 15.1% 1.0% SITU 1 1 1 1 1 1 1 1 1 1 11 75 II 31 11 1 1 1 1 1 1 1 1 1 235 IIIT 1 1 1 1 1 1 1 1 1 1 1 55 11 SS 31 S 1 1 1 1 1 1 1 1 215 1T SPICU . I 1 1.51 7.55 37.01 51.0% 1.11 MU 11111 0 1 1 11 IS IS II 15 3S 71 II II 35 1 1 1 1 1 1 755 HIT 1 1 1 0 1 1 0 1 30 1S 1S 10 10 15 IS 10 11 75 1 1 1 1 1 1 1S5 C0Me1110$101T TIIM P11T111S: ST SPICIS • 1 1.00 1.00 1.00% 1.00% 1.00% OITII 1.0 1.0 1.1 0.1 1.0 0.0 0.0 0.1 1.0 1.0 1.0 1.1 0.0 1.0 1.1 1.1 1.1 1.0 1.0 0.0 0.0 0.0 1.1 1.0 1 tilt 1.0 1.0 1.1 1.0 0.0 0.0 0.1 0.1 0.0 1.1 0.0 1.0 0.0 1.0 1.1 0.0 0.1 0.1 1.0 1.0 1.1 0.0 1.0 1.0 •111I1MIDI1TI TIIM Pl0I11G PITTIIIS: IT SPICIS : 1 106 1.50 2.15 02.5% 11.0% 1.0% 15701 0 0 1 1 1 1 0 21 35 35 35 35 25 35 35 20 1 1 1 1 1 1 1 1 175 IIIT 0 1 1 0 1 0 0 0 1 S 10 10 35 10 31 35 31 10 1 1 1 1 1 0 215 IT SUCH= 1 101 2.51 1.45 16.3% 71.0% 0.0% IITII 0 1 1 1 0 0 0 1 10 25 30 25 10 31 15 0 1 1 1 1 1 1 1 1 115 IIIT 0 1 0 0 0 0 1 1 1 1 5 IS 30 15 21 20 31 1 1 1 1 1 1 1 115 IT SPICIS= I 101 2.10 2.25 51.01 15.0% 0.0% 11TH 0 0 1 1 0 0 0 0 25 35 11 25 15 45 10 1 1 1 1 1 1 I 1 1 225 IIIT 1 0 0 pop o e 0 0 25 35 10 15 15 15 10 1 1 1 1 1 1 1 215 COMI111O 111111I01111 TERM P11TI11S: IT SPICSS = I 1.00 1.00 1.00% Loll 1.00% IITI1 1.0 1.6 1.1 0.0 1.1 0.0 0.0 1.0 0.0 1.0 1.0 0.0 0.0 0.0 0.1 0.1 1.0 1.1 1.0 0.0 0.0 0.1 1.1 0.0 1 IIIT 1.0 1.1 1.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.0 0.0 1.0 1.1 6.1 1.1 1.1 1.0 1.1 1.1 1.0 1.1 0.1 I Loll T111?MUG PITIHIS: LT SPICIS • 71 110 1.10 1.10 11.0% 101.0% 1.0% IITII 0 1 1 1 1 0 0 1 111 1 1 1 0 1 1 1 1 1 1 1 1 1 1 1 111 II11 ' 1 1 1 1 1 1 1 1 1 0 1 1 0 1 1 1 1 111 1 1 1 1 1 1 111 LT MCI!= 621 201 1.11 1.11 53.3% 111.11 5.5A 11111 1 1 1 1 1 1 1 11 31 31 1 1 0 21 1 1 1 1 1 1 1 1 1 1 111 IIIT 1 1 1 1 1 1 1 1 1 0 1 1 1 1 I 21 23 11 21 1 1 1 1 1 111 LT SPICIS= Ill 201 1.10 1.11 61.7% 111.11 III 11111 1 1 1 1 1 1 1 25 51 1 25 1 1 1 1 1 1 1 1 1 1 1 1 1 111 HIT 1 1 1 1 0 0 1 1 1 1 1 1 1 1 1 15 11 2 15 1 1 1 1 1 101 COM11110 LOIG Till P*T111H: LT SPICIS • 111 1.11 1.10 51.221 111.00% 1.00% IITII 1.0 1.1 1.1 1.1 1.1 1.0 0.0 11.1 31.5 23.6 3.2 1.1 1.1 15.7 1.1 1.1 1.1 1.1 1.1 1.1 1.0 1.1 1.1 1.1 101 1111 1.1 1.0 1.1 1.0 1.1 1.1 0.0 1.1 0.1 1.1 1.0 1.1 0.1 1.1 1.1 11.1 21.1 21.2 11.1 1.1 1.1 1.1 1.1 1.1 101 r 1 OW 8 '= aft AD 4444 -- - .4 - INI -- -- -- -r1 ~ « - - 64 . Ii — — x . -- -- -- -- - - gg gg e , ▪ J j -- -- .. - - 11 a - - . q - - Ihn- nn $ . aj -- -- -- -- - - - - a : -- -- -- -- - - - - II ionoumbl . l a -- -- -- -- - - - 11 - - ( . 7 }i -- -- -- - 11 -- -- -- -- 1 - - - - p , II i hi au 1:C as as I — if , - s» WII 111 aa : ss 4a 4 i "4 a 44 II o ...s- == .._ MM • • ' oo oe o 0 00 00 11 _' 'i 00 00 00 0001 0 mi e0 00 0 00 00 00 _ eo 11 r- em ee 0e e eo eo 0o eo eo c 91 m e 0 e o e o o !i o 0 0 0 0 0 0eou 0 0 o e o 0 00 0 ▪ m▪ m e0 ee e0 eo ee oe li s"mE 0 o 00 o 00 0e �," 0 - 0 " 0r -• '. na 00 mm 0 ii 00 0� - o em P. 0 ii. "" "• V. 00 ,sz: " il• a MP Pa a - 00 00 ds- m 00 �0 om� me., "" M -" 00 00 " 11 � i -- 0O o " 60 Hs II" 00 " 00 - 0 II eo . Cm 00 00 " 00 00 _ " ;Nifo wo 00 oo 00 00 00 0 0 00 s 00 00 00 00 00 00 00 00 � 0 0 00 NM $ 1 00 e0 00 0 00 Woow: N 0e 00 G ' 5 e0 00 0 00 0 00 00 00 " e e ow. o 0 o c e o 0 0 0 0 0 0 0 0 0 0 0 0 0 j � i e0 0e 0e owo oo oo 00 00 00 N . ee ow eej o eo oe oe oo . ee ee eo ee =ale eW i g _ g WW WW - WW WW WW _w m__ - WW - wW 11 Ea 1.4I II 11 W , N _ o " r i� " a$- lag Ia- h -. 0 o is s aiCe 0 e .-e " " � � m m q N 1 4 11 W I1:1 � I � .. °° I ; ; o m to � �- " d I m " S Table 1-6. Hourly Vehicle Moments for Alternative B2-Garage and Surface Parting VEHICLE MOVEMENT AND OCCUPANCY SUBPART: PARKIN& =PARKINS yiDAILY=s AVERAGE PEAK PARKING COMPOSITE PARKIN&ACTIVITY PATTERNS BY TIME OF DAY(TOTAL MOVEMENTS) DURATION DURATION TURNOVERS OCCUPANCY OCCUPANCY CARRY- MOVEMENT M- I- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- N- 1 - 2- 3- 4- 5- 6- 7- B- 9- 10- II- DAILY CATEGORY (WHIRS) PER SPACE FACTOR FACTOR OVER DIRECTION I M 2 M 3 M I M 5 M 6 M 1 AN 8 M 9 M 10 M Il M N I P11 2 PM 3 PR 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM IO PM 11 PM N TOTAL ------------------------- SHORT TERM PARKINS: 5T SPACES• 20 0.75 2.35 29.41 85.01 0.01 ENTER 0 0 0 0 0 0 0 0 0 0 B 15 16 6 10 0 0 0 0 0 0 0 0 0 55 EXIT 0 0 0 0 0 0 0 0 0 0 0 11 18 Il 6 I 0 8 0 0 0 0 0 0 55 INTERMEDIATE TERN PARKING: IT SPACES= 100 2.34 2.14 50.81 81.61 0.01 ENTER 0 0 0 0 0 0 0 7 23 32 35 28 17 37 30 8 0 0 0 0 0 0 0 0 217 EDIT 0 0 0 0 0 0 0 0 0 2 20 30 35 21 22 33 33 13 0 t l 0 0 0 217 LONG TERN PARKING: LT SPACES= 1231 B.07 1.00 57.91 100.0I 0.01 ENTER 0 0 0 0 0 0 0 231 476 285 50 0 0 190 0 0 0 0 0 0 0 0 0 0 1,232 Elli 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 241 313 439 240 0 0 0 0 0 1,233 COMPOSITE PARKING PATTERN: TOTAL SPACES= 1,351 7.53 1.11 30.71 97.21 0.01 ENTER 0 0 0 0 0 0 0 238 499 317 93 43 33 233 40 8 0 0 0 0 0 0 0 0 1,504 Ellf 0 0 0 0 0 0 0 0 0 2 20 Al 53 38 28 275 346 460 240 I I 0 0 0 1,505 ------------------------------ TOTAL VEHICLE MOVEMENTS: 0 0 0 0 0 0 0 238 499 313 Ili 84 86 271 68 283 346 460 240 I 1 0 0 0 3,009 AVERAGE SPACES OCCUPIED: -I -I -1 -I -1 -1 -1 118 487 894 1080 1125 1116 1204 1307 1180 873 470 120 -1 -2 -2 -2 -2 AVERAGE GARAGE OCCUPANCY FACTOR: -01 -01 -01 -01 -01 -01 -0X 91 361 661 801 831 831 891 971 871 651 151 91 -01 -01 -0I -01 -01 GARAGE OCCUPANCY AT END OF HOUR: -0I -01 -01 -01 -01 -01 -01 181 541 781 831 831 821 961 971 771 521 181 01 -01 -0I -01 -01 -01 • • ..7,4 gE ,9n a �� _� � a _$ s os oo o 1 ee ee ee e oo oo ee e oo ee ee 0e1 Jr ' oo oo oo i o e ea, oo o 3 e e oo e 0 eel u OO ee - e e 74 II ee ee 00 0 ee ee eei l o II 001 1 E .. e e .0 0 it .. .0 .. I 0 e e o o e o 001 OC go . € ee ee ee 0 00 0e e0 0 0e ee 00 001 om 1l3^^ oeu Ri1 00 00 00 o e0 00 00 0 0o 00 o0 o a0 0e ee ee oe e 0 7 ay, 00 e T o - WIWI00 00 1 W o a m m a o o 0 �^ 000 oo eoo _o oe o 0 eo 0e 00 00 Nto ll bo NmIE S� F 000 w 000eo oo m000 0 o 0o go 00 $geMir- _ Sig Vogt 0993 c.ig 0 00 00 oe oe CE-zI gIC Fm 0 o 0 0 0 0 0 0 0 0 TO < =oe 'droo oo o0 r+ 0o m n o .-. �. .-. a r m ", i mM e n �e o rj 0 o ee .0 0000 oo o 0 0 0 ee � .. 00 0. e e .0 00 0 0 0 0 0 0 0 0 e o oo e e e o 0 0 0:0 o e e o 0 0 o e o 0 0001 0 0 0 rR . rj .. o o .. a .. 0 0 .. 0 0 0 0 0 .. 0 0 0' > r-- i!! e o e o e 0 0 dn 0 0 0 0 e e 0 .. 0 e .. .. . .. .. .. 0 0 0 0 0 .8N 0 0 oo oo e 0 0 0 ti ra ! oo e e oo eoou e 0 oo ea oo e 0 0 0 0 0 0 0 -r1 o o e e o 0 0000 L oo oo e o 00u 0 0 0 0 0 0 0 0 o $ r o f... ... ...... 1.1 W II e I M II e �y e o •e V tY aco • s d o • W • o b 8{ 8f Asi 1't a 8{ `�N N In N IIT N _ _ b o M o - II 0 - re i C. G .• 4 u o I x ri 0 0 0L.J O 0 1 o 0 e — — ow II a Left 1 . a U S N �- o[ 3Hg IM a8 I. zF $ oS W$ $ mS 9 , � o a P` s 0 me, m 0m oz oe q �� "1 g- o - m - 0 of _ m o r IT r g C b u a £ u ii _ i 3 Table 1-8. Hourly Vehicle Moments for Realm Alternative 82-Garape Parting Only VEHICLE MOVEMENT AND OCCUPANCY SUMMARY: T, , _ — L ,^__ PARKING��PARKING v'DAILY AVERAGE PEAK PARKING COMPOSITE PARKING ACTIVITY PATTERNS BY TIME OF DAY(TOTAL MOVEMENTS) DURATION DURATION TURNOVERS OCCUPANCY OCCUPANCY CARRY- MOVEMENT M- 1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- N- 1- 2- 3- 4- 5- 6- 7- 8- 9- 10- 11- DAILY CATEGORY (HOURS) PER SPACE FACTOR FACTOR OVER DIRECTION I AN 2 AM 3 AM 4 All 5 AM 6 AN 7 AN 81,719 AM IO AM 11 AM N 1 PM 2 PM 3 PM 4 PM 5 PM 6 PM 7 PM 8 PM 9 PM 10 PM II PM M TOTAL ------------------------- ----- SNORT TERM PARKING: ST SPACES= 0 0.00 0.00 0.01 0.01 0.01 ENTER 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 EIIT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM PARKING: IT SPACES= 0 0.00 0.00 0.01 0.01 0.01 ENTER 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 EIIT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 LONG TERM PARKING: LI SPACES= 800 8.07 1.00 57.91 100.01 0.02 ENTER 0 0 0 0 0 0 0 150 309 185 33 0 0 123 0 0 0 0 0 0 0 0 0 0 800 EXIT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 156 203 285 156 0 0 0 0 0 800 COMPOSITE PARKING PATTERN: TOTAL SPACES: 800 8.07 1.00 63.81 100.0I 0.01 ENTER 0 0 0 0 0 0 0 150 309 185 33 0 0 123 0 0 0 0 0 0 0 0 0 0 000 EIIT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 156 203 285 156 0 0 0 0 0 800 ----------------- TOTAL VEHICLE MOVEMENTS: 0 0 0 0 0 0 0 150 309 185 33 0 0 123 0 156 203 285 156 0 0 0 0 0 1,600 AVERAGE SPACES OCCUPIED: 0 0 0 0 0 0 0 75 305 552 661 677 677 739 800 722 543 299 78 0 0 0 0 0 AVERAGE GARAGE OCCUPANCY FACTOR: 01 01 01 01 01 01 01 91 381 691 031 851 851 92I 1001 901 68I 311 101 0I 01 01 01 01 GARAGE OCCUPANCY AT END OF HOUR: 01 01 01 01 01 01 01 191 571 811 051 851 851 1001 1001 011 551 201 01 01 01 0I 01 01 Table 0-9. letoc Vehicle Fleet 11z Pceceata9ea la the Teazo 1115 through 2121 run I11 PIS311CI1 Cal CUILL USI LICIT TRUCK CUR 0S1 11D0UI TOld CULL US! Ian 61S TOUCI %LOIMD TIL IDh LIT MDT IDC1 UDC NCI L11DID UIL11D10 DI13IL LADED UILIIDID 01170E LIUDID UIL110ID OUSEL L11D10 UILIIOID 7111CLIS 1111 1185 15.12% 1.15% 1.11% 1.101 1.11% 1.111 21.68% 75.16% 3.06% 31.10% 61.111 1.111 11.311 51.10% 1.011 100.00% 0.101 72.061 1115 1111 15.11% 1.231 1.131 1.111 1.011 1.111 11.111 71.25% 1.571 26.56% 13.331 10.11% 41.20% 57.10% 0.11% 111.00% 1.001 16.11% 1116 1111 15.11% 1.11% 1.66% 1.00% 1.11% 1.131 11.211 11.51% 4.121 21.00% 65.61% 12.561 16.50% 61.50% 1.00% 11.15% 5.15% 71.35% 1111 1111 15.111 1.11% 4.51% 1.11% 1.01% 1.131 11.121 85.26% 1.121 11.12% 61.11% 15.21% 31.211 11.10% 1.001 11.01% 15.11% 12.021 1111 1101 15.111 1.51% 4.41% 1.111 1.01% 1.111 1.15% 17.71% 5.351 11.111 61.15% 11.111 21.40% 13.60% 1.011 15.51% 21.11% 11.05% 1111 1111 15.07% 1.611 1.311 1.011 1.011 1.13% 5.28% 11.61% 6.11% 11.71% 61.31% 10.11% 22.00% 11.10% 1.001 11.111 31.12% 15.13% 1111 1111 05.06% 1.72% 1.21% 1.111 1.11% 1.111 1.71% 11.17% 6.71% 1.131 61.151 21.121 11.011 12.101 1.001 61.01% 31.11% 16.211 1111 1112 15.06% 1.11% 1.111 1.111 0.011 1.131 2.661 11.131 7.41% 5.171 67.61% 26.31% 11.111 15.601 1.001 51.561 13.44% 11.11% 1112 111) 15.06% 1.121 1.11% 1.001 1.007 1.111 I.11% 50.171 1.041 1.211 66.11% 21.71% 11.20% 11.101 0.001 51.17% 11.011 16.971 1191 1111 15.011 10.111 4.001 0.001 1.00% 1.131 1.47% 11.121 1.61% 1.111 65.51% 31.011 0.401 11.101 0.001 11.051 51.151 16_71% 1111 1915 15.071 10.01% 1.111 0.001 1.00% 0.111 1.241 01.131 1.131 2.111 61.01E 1).06% 6.001 11.00% 0.00% 11.121 55.21% 16.31% 1195 1116 15.071 11.171 3.13% 0.00% 0.001 1.13% 1.01% 11.751 1.51% 2.10% 62.711 11.841 4.00% 16.00% 0.00% 11.911 51.01% 16.011 1111 1117 05.01% 10.211 1.75% 0.00% 1.07% 1.131 0.111 11.071 1.11% 1.11% 61.10% 11.10% 2.10% 11.60% 0.001 11.11% 60.53% 15.12% 1117 1111 15.011 11.21% 1.10% 0.001 0.00% 1.931 0.121 11.71% 10.321 1.69% 60.611 37.10% 1.40% 17.601 0.001 37.10E 62.60% 15.36% 1111 1111 15.101 10.311 1.13% 0.10% 1.001 0.13% 0.11% 11.51% 10.601 1.171 51.711 31.12% 2.40% 17.60% 0.001 35.611 64.11% 15.01% 1911 2000 15.11% 10.30% 3.51% 0.001 0.00% 1.131 0.891 11.21% 10.13% 1.15% 51.77% 11.71% 2.10% 17.60% 0.00% 31.11% 65.161 11.73% 2000 2101 15.12% 10.41% 1.511 0.001 0.001 0.11t 0.11E 11.091 11.11% 1.43% 57.91% 10.51% 2.40% 91.10E 0.00% 32.01% 67.11% 11.11% 2001 2082 15.111 10.15% 3.41% 0.001 0.00% 0.13% 0.111 17.11% 11.17% 1.11% 57.301 11.21% 2.401 11.10% 0.011 31.70E 65.301 11.261 2002 1001 15.131 11.111 1.161 0.001 1.00% 0.911 1.11% 11.12% 11.211 1.401 56.74% 11.16% 2.401 11.601 0.00% 10.11% 69.26% 11.01% 2011 2004 15.111 10.50% 3.13% 0.00% 0.00% 1.13% 0.191 11.711 11.771 1.311 51.10% 42.32% 2.101 17.60% 0.001 11.12% 70.011 13.16E 2001 2105 15.11% 11.511 1.11% 0.001 1.00% 1.13% 0.11% 11.11% 11.42% 1.311 55.91% 12.10% 2.401 17.60% 0.001 29.76% 70.711 13.171 2005 2001 15.15% 10.53% 3.39% 0.00% 0.001 0.13% 1.11% 17.15% 11.16% 1.31% 55.63% 13.001 2.40% 11.601 0.001 29.26% 70.711 13.10% 2006 2007 15.11% 10.51% 1.17% 0.001 0.001 0.131 1.11% 11.61% 11.11% 1.36% 55.121 11.12% 2.101 17.60% 0.001 21.21% 70.111 11.161 2001 2001 '15.15% 11.55% 1.17% 0.00% 0.00% 0.13% 0.191 87.62% 11.411 1.361 55.20% 13.16% 1.40% 11.60% 0.00% 29.26% 70.711 17.73% 2001 2001 15.161 10.551 3.36% 0.00% 1.00% 0.11% 0.11% 11.62% 11.50% 1.361 55.19% 13.15E 2.101 17.60% 0.001 21.261 70.111 13.721 2009 2010 15.15% 10.56% 3.36% 0.01% 1.001 1.131 1.191 17.621 11.50% 1.36% 55.13% 13.51% 2.40% 17.60% 0.001 21.21% 70.741 13.711 2010 2020 15.161 10.511 3.15% 0.00% 0.00% 0.11% 0.11% 81.621 11.501 1.351 55.02% 11.631 2.401 11.10% 0.001 29.261 10.111 13.691 1020 Table B-10. Trip Mode Estimates for Renton Parking Garage Alternatives SET1: Operating Mode Mix Calculations: Short Ter■ Exiting Trips Trip Catalyst Vehicle Modes Noncatalyst Vehicle Modes Type % Trips % Cold t Rot % Stable % Cold t Not % Stable H-V 5.00% 13.13% 86.87% 0.00% 11.46% 88.54% 0.00% 0-5 0.00% 19.01% 80.96% 0,00% 12.10% 87.90% 0.00% 8-0 15.00% 21.12% 78.88% 0.00% 13.40% 86.60% 0.00% I' 0-V 35.00% 23.81% 76.19% 0.00% 16.05% 83.95% 0.00% 0-0 45.00% 15.14% 84,86% 0.00% 4.32% 95.68% 0.00% IN-EI 0.00% 1.60% 98.40% 0.00% 1.39% 98.61% 0.00% EI-IN 0.00% 0.69% 99.31% 0.00% 0.60% 99.40% 0.00% THROUGH 0.00% 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% tVTD AVGt 18.97% 81.03% 0.00% 10.15% 89.85% 0.00% % VMT SUM 100.00% EMFAC STARTS: COLD : 17.82% HOT : 82.18% SET2: Operating Mode Mix Calculations: Intermediate Term Exiting Trips Trip Catalyst Vehicle Modes Noncatalyst Vehicle Modes Type t Trips % Cold t Hot % Stable t Cold % Hot % Stable H-V 10.00% 100.00% 0.00% 0.00% 11.46% 88.54% 0.00% H-S 0.00% 100.00% 0.00% 0.00% 12.10% 87.90% 0.00% 8-0 20.00% 100.00% 0.00% 0.00% 13.40% 86.60% 0.00% 0-V 30.00% 100.00% 0.00% 0.00% 16.05% 83.95% 0.00% 0-0 10.00% 100.00% 0.00% 0.00% 1.32% 95.68% 0.00% lit IN-EI 0.00% 100.00% 0.00% 0.00% 1.39% 98.61% 0.00% EI-IN 0.00% 100.00% 0,00% 0.00% 0.60% 99.10% 0.00% THROUGH 0.00% 100.00% 0.00% 0.00% 0.00% 100.00% 0.00% tVTD AVGt 100.00% 0.00% 0.00% 12.51% 87.49% 0.00% % WIT SUM 100.00% EMFAC STARTS: COLD : 88.60% HOT : 11.40% SET3: Operating Mode Mix Calculations: Long Ter■ Exiting Trips !I Trip Catalyst Vehicle Modes Noncatalyst Vehicle Modes Type % Trips % Cold % Hot % Stable % Cold % Hot % Stable H-V 70.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% H-s 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% 0-0 5.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% 0-V 20.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% 0-0 5.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% IN-EI 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% EI-IN 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% THROUGH 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% tVTD AVG' 98.00% 0.00% 0.00% 98.00% 0.00% 0.00% % VMT SUM. 100.00% EMFAC STARTS: COLD = 98.00% HOT : 0.00% Table B-10. (cont.) Trip Mode Estimates for Renton Parking Garage Alternatives SET1: Operating Mode Mix Calculations: Short Term Exiting Trips Trip Catalyst Vehicle Modes Noncatalyst Vehicle Modes Type % Trips % Cold t Hot t Stable % Cold t Rot t Stable H-V 5.00% 91.71% 8.29% 0.00% 80.04% 19.96% 0.00% H-S 0.00% 52.89% 47.11% 0.00% 33.61% 66.39% 0.00% H-0 15.00% 68.36% 31.64% 0.00% 43.38% 56.62% 0.00% 0-V 35.00% 62.64% 37.36% 0.00% 42.24% 57.76% 0.00% 0-0 45.00% 28.90% 71.10% 0.00% 8.26% 91.74% 0.00% II-EI 0.00% 91.27% 8,73% 0,00% 79.12% 20.88% 0,00% EI-II 0.00% 91.15% 8.85% 0.00% 78.90% 21.10% 0.00% THROUGH 0.00% 91.71% 8.29% 0.00% 80.04% 19.96% 0.00% tVTD AVG! 49.77% 50.23% 0.00% 29.01% 70.99% 0.00% % VKT SUM 100.00% EMFAC STARTS: COLO : 47.06% HOT : 52.94% SBT2: Operating Mode Mix Calculations: Intermediate Tera Exiting Trips 1 Trip Catalyst Vehicle Modes Noncatalyst Vehicle Modes Type % Trips % Cold % Hot t Stable % Cold t Hot t Stable H-V 40.00% 100,00% 8.00% 0.00% 80.04% 19.96% 0,001 H-S 0.00% 100.00% 0.00% 0.00% 33.61% 66.39% 0.00% H-0 20.00% 100.00% 8.00% 0.00% 43.38% 56.62% 0.00% 0-V 30.00% 100.00% 0.00% 0.00% 42.24% 57.76% 0.00% 0-0 20.00% 100.00% 0.00% 0.00% 8.26% 91.74% 0.00% IH-EI 0.00% 100.00% 0.00% 0.00% 79.12% 20.88% 0.00% EI-II 0.00% 100.00% 8.00% 0.00% 78.90% 21.10% 0.00% THROUGH 0.00% 100.00% 0.00% 0.00% 80.04% 19.96% 0.00% 'VTD AVGt 110.00% 0.00% 0.00% 55.01% 54.99% 0.00% % VMT SUK 110.00% EMFAC STARTS: COLD : 102.84% HOT : 7,16% SET3: Operating Mode Mix Calculations: Long Ten Exiting Trips Trip Catalyst Vehicle Modes Noncatalyst Vehicle Modes Type % Trips % Cold % Rot % Stable % Cold % Hot t Stable II H-V 70.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% H-S 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% R-0 5.00% 100.00% 0.00% 0.00% •100.00% 0.00% 0.00% 0-V 20.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% 0-0 5.00% 100.00% 0.00% 0.00% 100.00%. 0.00% 0.00% II-EI 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% EI-II 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0,00% THROUGH 0.00% 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% tVTD AVGt 100.00% 0.00% 0.00% 100.00% 0.00% 0.00% % VMT SUM 100.00% EMFAC STARTS: COLD : 100.00% HOT : 0.00% Table B-11. Renton First City Parking Garage with IEM ( I/N PROGRAM SELECTED: START YEAR (JANUARY 1): 1982 PRE-1981 MYR STRINGENCY RATE: 20% FIRST MODEL YEAR COVERED: 1982 LAST MODEL YEAR COVERED: 1994 WAIVER RATE (PRB-1981): 20.1 WAIVER RATE (1981 AND NEWER): 10.1 COMPLIANCE RATE: 70.1 INSPECTION TYPE: COMPUTERIZED DECENTRALIZED INSPECTION FREQUENCY ANNUAL VEHICLE TYPES COVERED: LOGY - YES LDGT1 - YES LDGT2 - NO HDGV - NO 1981 & LATER MYR TEST TYPE: IDLE RENTON LAPs ASTM CLASS: A MINIMUM TEMP: 30. (F) MAXIMUM TEMP: 50. (F) BASE RVP: 7,0 IN-USE RVP: 7.0 IN-USE START YR: 1989 TOTAL HC EMISSION FACTORS INCLUDE EVAPORATIVE NC EMISSION FACTORS. CAL. YEAR: 1993 I/M PROGRAM: YES AMBIENT TEMP: 40.0 (F) REGION: LOW ANTI-TAM, PROGRAM: NO OPERATING MODS: 11.9 / 5.8 / 15,3 ALTITUDE: 500. FT. C , VER. TYPE: LDGV LDGT1_ LDGT2 LDGT HOGV _LDDV LDDT_ - _ODD? MC ALL VBH VBH. SPEEDS: 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0- VMT MIX: .851 ,099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EXHAUST CO: 55.00 64.36 75.10 67,51 .00 .00 .00 .00 71.17 56,923 HOT STABILIZED IDLE EMISSION FACTORS (GM/HR) IDLE CO: 194.50 237,21 254.16 242.18 .00 .00 .00 .00 160.59 200.866 CAL. YEAR: 1993 I/M PROGRAM: YES AMBIENT TEMP: 40.0 (F) REGION: LOW ANTI-TAM. PROGRAM: NO OPERATING MODE:100.0 / .0 /100.0 ALTITUDE: 500. FT. ' VBH. TYPE: LDGV LOGT1 LDGT2 _LDGT HDGV LDDV LDDT HDDV MC ALL VER VBH. SPEEDS: 7.0 7.0 7,0 7.0 7.0 7,0 7.0 7.0 VMT MIX: .851 .099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EXHAUST CO: 185.82 198.18 212.85 202.47 .00 .00 .00 .00 223.97 188.494 ROT STABILIZED IDLE EMISSION FACTORS (GM/HR) IDLE CO: 194.50 237,21 254.16 242.18 .00 .00 .00 .00 160.59 200.866 Table B-12. Renton First City Parking Garage Analysis RENTON LAPS ASTM CLASS: A MINIMUM TEMP: 30. (F) MAXIMUM TEMP: 50. (F) BASE RVP: 7.0 IN-USE RVP: 7.0 IN-USE START YR: 1989 TOTAL RC EMISSION FACTORS INCLUDE EVAPORATIVE HC EMISSION FACTORS. CAL. YEAR: 1993 I/M PROGRAM: NO AMBIENT TEMP: 40.0 (F) REGION: LOV ANTI-TAM. PROGRAM: NO OPERATING MODE: 11.9 / 5.8 / 15.3 ALTITUDE: 500. FT. VER. TYPE: LDGV LDGT1 LDGT2 LDGT _HDGV LDDV _LDDT_ HDDV MC ALL VER VER. SPEEDS: 7.0 7.0 7.0 7.0 7.0 7.0 7.0 7.0 VET MII: .851 .099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EIHAUST CO: 57.66 70.48 75.10 71.83 .00 .00 .00 .00 74.17 59.795 ROT STABILIZED IDLE EMISSION FACTORS (GM/HR) IDLE CO: 204.03 262.74 254.16 260.22 .00 .00 .00 .00 160.59 211.510 CAL. YEAR: 1993 I/M PROGRAM: NO AMBIENT TEMP: 40.0 (F) REGION: LOV ANTI-TAM. PROGRAM: NO OPERATING MODE:100.0 / .0 /100.0 ALTITUDE: 500. FT, VER. TIPE: LDGV LDGT1 LDGT2_ LOGY _HDGV_ LDDV _LDDT_ HDDV MC _ ALL VER VER. SPEEDS: 7.0 7.0 7.0 _ ToTo7.0 7.0 7.0 YET NIX: .851 .099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EXHAUST CO: 190.12 207.87 212.85 209.33 .00 .00 .00 .00 223.97 193.111 HOT STABILIZED IDLE EMISSION FACTORS (GM/HR) 1 ' IDLE CO: 204.03 262.74 254.16 260.22 .00 .00 .00 .00 160.59 211.510 Table B-13. Renton First City Parking Garage with IOM (5 •ph) I/M PROGRAM SELECTED: START YEAR (JANUARI 1): 1982 PRE-1981 MYR STRINGENCY RATE: 20% FIRST MODEL YEAR COVERED: 1982 LAST MODEL YEAR COVERED: 1994 WAIVER RATE (PRE-1981): 20.t WAIVER RATE (1981 AND NEVER): 10.% COMPLIANCE RATE: 70.% INSPECTION TYPE: COMPUTERIZED DECENTRALIZED INSPECTION FREQUENCY ANNUAL VEHICLE TYPES COVERED: LDGV - YES 6DGTI - YES LDGT2 - NO I' HDGV - NO 1981 0 LATER MYR TEST TYPE: IDLE RENTON LAPS AST! CLASS: A MINIMUM TEMP: 30. (F) MAXIMUM TEMP: 50. (F) BASE RVP: 7.0 IN-USE RVP: 7.0 IN-USE START YR: 1989 TOTAL BC EMISSION FACTORS INCLUDE EVAPORATIVE HC EMISSION FACTORS. CAL. YEAR: 1993 I/M PROGRAM: YES AMBIENT TEMP: 40.0 (F) REGION: LOW ANTI-TAM. PROGRAM: NO OPERATING MODE: 11.9 / 5.8 / 15.3 ALTITUDE: 500. FT. I' VER. TYPE: LOGY LDGT1 LDGT2 _LDGT HDGV LDDV_ LDDT_ _HDDV MC ALL UN VER. SPEEDS: 5.0 5.0 5.0 5.0 5.0 5.0 5.0 5.0 VNT MIX: .851 .099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EXHAUST CO: 74.98 86.94 101.87 91.31 .00 .00 .00 .00 104.50 77.533 ;i ',, f HOT STABILIZED IDLE EMISSION FACTORS (GM/HR) IDLE CO: 194.50 237.21 254.16 242.18 .00 .00 .00 .00 160.59 200.866 CAL. YEAR: 1993 I/M PROGRAM: YES AMBIENT TEMP: 40.0 (F) REGION: LOW ANTI-TAM. PROGRAM: NO OPERATING MODE:100.0 / .0 /100.0 ALTITUDE: 500. FT. I'. VER. TYPE: LDGV LDGT1 LDGT2 LDGT HMV LDDV -LDDT---- - - -HDDV !C ALL---- VER -- -- --- ---- VIA. SPEEDS: 5.0 5.0 5.0 5.0 . 5.0 5.0 5.0 5.0 VMT MIX: .851 .099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EXHAUST CO: 252.22 268.05 289.26 274.26 .00 .00 .00 .00 315.55 255.874 HOT STABILISED IDLE EMISSION FACTORS (GM/HR) IDLE CO: 194.50 237.21 251.16 242.18 .00 .00 .00 .00 160.59 200.866 'I Table 8-14 Renton First City Parking Garage Analysis (no I&M, 5 aph) RENTON LAPs ASTM CLASS: A MINIMUM TEMP: 30. (F) MAXIMUM TEMP: 50. (F) BASS RVP: 7.0 IN-USE RVP: 7.0 IN-USE START IR: 1989 TOTAL HC EMISSION FACTORS INCLUDE EVAPORATIVE HC EMISSION FACTORS. CAL. IEAR: 1993 I/M PROGRAM: NO AMBIENT TEMP: 40.0 (F) REGION: LOW ANTI-TAM. PROGRAM: NO OPERATING MODE: 11.9 / 5.8 / 15.3 ALTITUDE: 500. FT. VEIL TYPE: LOGY_ LDGT1 LDGT2 _LOG? _HDGV _LDDV LDDT _HDDV MC ALL PEN PH. SPEEDS: 5.0 5 0 5.0 5.0 5.0 5.0 5.0 5.0 VMT MII: .851 .099 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (GM/MILE) EXHAUST CO: 78.54 95.08 101.87 97.07 .00 .00 .00 .00 101.50 81.370 HOT STABILISED IDLE EMISSION FACTORS (GM/RR) IDLE CO: 204.03 262,74 254.16 260.22 .00 .00 .00 .00 160.59 211.510 CAL. YEAR: 1993 I/M PROGRAM: NO AMBIENT TEMP: 40.0 (F) REGION: LOW ANTI-TAM. PROGRAM: NO OPERATING MODE:100.0 / .0 /100.0 ALTITUDE: 500. FT. VER. TYPE: LDGV LOOT1_ LDGT2_ _LDGT__ HDGV LDDV LDDT_ HDDV MC ALL YEN VEIL SPEEDS: 5.0 5,0 5 0 5.0 5.0 5.0 5.0 5.0 VMT MIX: .851 .039 .041 .000 .000 .000 .000 .009 COMPOSITE EMISSION FACTORS (3M,'MILE) EXHAUST CO: 258.00 281.i0 289.26 283.19 .00 .00 .00 .00 315.55 262.085 HOT STABILIZED IDLE EMISSION FACTORS (GM/HR) IDLE CO: 204.03 262.74 254.16 260.22 .00 .00 .00 .00 160.59 211.510 • Table 8-15. Parking Emissions Model Results for Garage Alternative 81 ' PARAMETERS SYMBOL HOUR 1 HOUR 2 HOUR 3 HOUR 4 HOUR 5 HOUR 6 HOUR 7 HOUR 9 WTD MEAN TOTALS INPUT DATA: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE 81 MAX NUMBER OF LEVELS FROM ENTRANCE L 3 3 3 3 3 3 3 3 3 SHORT TERM (ST) SPACES Ps 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM (IT) SPACES Pi 0 0 0 0 0 0 0 0 0 LONG TERM (LT) SPACES P1 800 800 BOO BOO 800 800 800 800 BOO GROSS SQUARE FEET PER SPACE B 378.0 390,0 390.0 390.0 390.0 390,0 390,0 390.0 388,5 NUMBER OF EXIT LANES Nx 1 1 1 1 1 1 1 1 1.0 ST ENTERING TRIPS per 100 ST SPACES Ysn 0.0 0.0 0.0 0.0 0,0 0.0 0,0 0.0 0.0 ' ST EXITING TRIPS per 100 ST SPACES Ysx 0.0 0.0 0.0 0.0 0.0 0,0 0.0 0.0 0.0 IT ENTERING TRIPS per 100 IT SPACES Yin 0.0 0.0 0.0 0,0 0.0 0.0 0,0 0.0 0.0 IT EXITING TRIPS per 100 IT SPACES Yix 0.0 0,0 0,0 0.0 0,0 0.0 0.0 0.0 0.0 LT ENTERING TRIPS per 100 LT SPACES Yln 0.0 0,0 15,7 0.0 0.0 0,0 0,0 0,0 2.0 ' LT EXITING TRIPS per 100 LT SPACES Ylx 0.0 0.0 0.0 0.0 18.9 24.0 38.2 18.9 12.5 INITIAL DIST COEFFIC., ENTERING Fn 0,210 0.210 0,210 0,210 0,210 0.210 0.210 0.210 0,210 INITIAL DIST COEFFIC,, EXITING Fx 0.210 0,210 0.210 0.210 0,210 0.210 0.210 0,210 0.210 EXTRA TRAVEL X, ENTERING VEHICLES Un 25 20 20 20 20 0 0 0 20,0 EXTRA TRAVEL X, EXITING VEHICLES Ux 0 0 0 0 0 0 0 0 0,0 ENGINE WARM-UP TIME (seconds/veh) ix 10,0 10.0 10,0 10,0 10.0 10.0 10,0 10.0 10.0 IDLING AT ENTRANCE (sec/veh) In 3.0 3.0 3.0 3.0 3.0 3,0 3,0 3,0 3.0 IDLING AT EXIT POINT (sec/veh) ix 16.0 16.0 16.0 16,0 16.0 16.0 16,0 16.0 16.0 X VEHICLES WITH CATALYST C 86,97 86.97 86.97 86.97 86.97 86,97 86.97 86.97 86.97 , -. X CAT COLD START, ST ENTERING PCCCin 0.0 18.9 13.9 18.9 18.9 18.9 18,9 18.9 NA X CAT COLD START, IT ENTERING PCCCin 0.0 16.9 16.9 16.9 16.9 16.9 16,9 16,9 NA X CAT COLD START, LT ENTERING PCCCC1n 15.3 15.2 15,2 15,2 15,2 15.2 15.2 15,2 15.2 ' X NONCAT COLD START, ST ENTERING PCCNsn 0.0 11.7 11.7 11.7 11,7 11.7 11.7 11.7 NA ' X NONCAT COLD START, IT ENTERING PCCNin 0,0 11.8 11.8 11,8 11,8 11.8 11.8 11.8 NA X NONCAT COLD START, LT ENTERING PCCN1n 11.9 11.4 11.4 11,4 11,4 11,4 11.4 11.4 11.4 AVERAGE VEHICLE SPEED, 1-20 mph S 7 7 7 7 7 7 7 • 7 7 HOT IDLE RATE (grams/minute) Ih 3.4400 3.4400 3.4400 3,4400 3.4400 3.4400 3.4400 3,4400 3.4400 100X COLD RATE 8 5 MPH (gm/mile) Ec 258.98 258.98 258,99 258,98 258.98 258,98 258.98 258.98 258.98 '- ST ENTERING RATE, (grams/mile) Esn 0.00 0.00 0,00 0.00 0,00 0.00 0.00 0,00 NA ST EXITING RATE, (grams/mile) Esx 0,00 0,00 0,00 0.00 0.00 0,00 0.00 0,00 NA 1 IT ENTERING RATE, (grams/mile) Ein 0,00 0,00 0.00 0,00 0.00 0.00 0.00 0,00 NA IT EXITING RATE, (grams/mile) Eix 0,00 0.00 0,00 0.00 0.00 0.00 0,00 0,00 NA LT ENTERING RATE, (grams/mile) Eln 58.36 58.36 58,36 58.36 58,36 58,36 58.36 59,36 58.36 . _ LT EXITING RATE, (grams/mile) Elx 190.80 190.80 190,80 190,80 190.80 190.80 190.80 190.80 190.80 MODEL OUTPUT: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE 81 TOTAL SPACES P 800 800 800 800 800 800 800 800 800 GROSS PARKING AREA (square feet) A 302,400 312,000 312,000 312,000 312,000 312,000 312,000 312,000 310,800 EXIT DEMAND, SHORT TERM Vdsx 0 0 0 0 0 0 0 0 0 0 EXIT DEMAND, INTERMEDIATE TERM Vdix 0 0 0 0 0 0 0 0 0 0 .-- EXIT DEMAND, LONG TERM Vdlx 0 0 0 0 151 192 305 151 100 800 TOTAL EXIT DEMAND Vdjx 0 0 0 0 151 192 305 151 100 800 TOTAL EXIT CAPACITY Xi: 185 185 185 185 185 185 185 185 185 MEAN EXIT QUEUE (vehicles/lane) Xq 0.0 0.0 0.0 0.0 0.8 3.7 67.6 110.9 22.9 ST EXIT CARRY-OVER (vehicles) Vqs 0 0 0 0 0 0 0 0 0,0 IT EXIT CARRY-OVER (vehicles) Vqi 0 0 0 0 0 0 0 0 0.0 LT EXIT CARRY-OVER (vehicles) Vql 0 0 0 0 0 7 128 94 28.6 TOTAL EXIT CARRY-OVER (vehicles) Vq 0 0 0 0 0 7 128 94 28.6 SHORT TERM ENTERING TRIPS Vsn 0 0 0 0 0 0 0 0 0 0 SHORT TERM EXITING TRIPS Vsx 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM ENTERING TRIPS Vin 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM EXITING TRIPS Vix 0 0 0 0 0 0 0 0 0 0 LONG TERM ENTERING TRIPS Vln 0 0 126 0 0 0 0 0 16 126 LONG TERM EXITING TRIPS Vlx 0 0 0 0 • 151 185 185 185 88 706 TOTAL ENTERING TRIPS Vjn 0 0 126 0 0 0 0 0 16 126 TOTAL EXITING TRIPS Vjx 0 0 0 0 151 185 185 185 8B 706 TOTAL TRIPS Vjz 0 0 126 0 151 185 185 185 104 832 FINAL DIST COEFFICIENT, ENTERING Gn 1.630 1.630 1.630 1.630 1.630 1.630 1.630 1.630 1,630 FINAL DIST COEFFICIENT, EXITING Go 1,630 1,630 1,630 1.630 1,630 1.630 1.630 1.630 1.630 MEAN TRAVEL PATH (feet/vehicle) D NA NA 910 NA 910 910 910 910 NA ENTERING VEHICLE TRAVEL (ft/veh) On 1,140 1,113 1,113 1,113 1,113 930 930 930 1,113 EXITING VEHICLE TRAVEL (ft/veh) Do 916 930 930 930 930 930 930 930 930 MAXIMUM ENTER IDLE TIME (sec/veh) Mn 12 12 13 12 12 12 12 12 13.4 MINIMUM EXIT IDLE TIME (sec/veh) Mx 29 29 29 29 44 90 1113 1805 797.3 MOBILE/EMFAC IDLE TIME FRACTION H 0.4067 0,4067 0,4067 0.4067 0.4067 0.4067 0.4067 0,4067 0,4067 IDLE TIME COEFFICIENT (sec/ft) R 0.0396 0.0396 0.0396 0.0396 0,0396 0.0396 0.0396 0,0396 0.0396 MOBILE/EMFAC ENTER IDLE SECONDS Tn 45 44 44 44 44 37 37 37 44.1 MOBILE/EMFAC EXIT IDLE SECONDS Tx 36 37 37 37 37 37 37 37 36.9 MEAN EXIT TIME (seconds/vehicle) Xt 0 0 0 0 98 144 1,166 1,858 851 ' X CAT COLD START, ST EXITING PCCCsx 0,0 18.9 18,9 18.9 18.9 18.9 18,9 18.9 NA X CAT COLD START, IT EXITING PCCCix 100.0 100,0 100.0 100,0 100.0 100,0 100,0 100.0 NA X CAT COLD START, LT EXITING PCCC1x 100,0 100.0 100,0 100.0 100,0 100.0 100.0 100.0 100.0 X NONCAT COLD START, ST EXITING PCCNsx 0,0 11.7 11.7 11.7 11,7 11.7 11.7 11.7 NA X NONCAT COLD START, IT EXITING PCCNix 0.0 11.8 11,8 11,8 11.8 11.8 11,8 11.8 NA X NONCAT COLD START, LT EXITING PCCN1x 100,0 100,0 100.0 100.0 100,0 100.0 100.0 100,0 100.0 X COLD STARTS, ST ENTERING TRIPS Wsn 0,0 18,0 . 18.0 18.0 18.0 18.0 18.0 18,0 NA ' X COLD STARTS, ST EXITING TRIPS Wsx 0.0 18.0 18.0 18.0 18,0 18,0 18.0 18.0 NA X COLD STARTS, IT ENTERING TRIPS Win 0,0 16.3 16.3 16,3 16,3 16.3 16,3 16.3 NA X COLD STARTS, IT EXITING TRIPS Nix 87,0 88.5 88,5 88,5 88.5 88.5 88.5 88.5 NA X COLD STARTS, LT ENTERING TRIPS Win 14.9 14.7 14,7 14,7 14,7 14,7 14.7 14.7 14.7 X COLD STARTS, LT EXITING TRIPS Wlx 100.0 100.0 100,0 100,0 100.0 100.0 100.0 100:0 100.0 100X COLD IDLE RATE (gm/min) Ic 21.582 21.582 21.582 21.582 21.582 21.582 21.582 21.582 21.582 COLD/HOT IDLE (gm/min), ST ENTER Isn 3.440 6.702 6,702 6,702 6.702 6,702 6.702 6.702 NA COLD/HOT IDLE (ge/min), ST EXIT Isx 3,440 6,702 6.702 6,702 6.702 6,702 6.702 6.702 NA COLD/HOT IDLE (gm/min), IT ENTER lin 3,440 6.390 6.390 6.390 6,390 6,390 6.390 6,390 NA COLD/HOT IDLE (gm/min), IT EXIT Iix 19.218 19.497 19.497 19.497 19.497 19.497 19.497 19,497 NA COLD/HOT IDLE (gm/min), LT ENTER Iln 6,140 6.103 6.103 6.103 6,103 6,103 6,103 6,103 6.103 COLD/HOT IDLE (gm/min), LT EXIT Ilx 21.582 21.582 21.582 21.582 21.582 21,582 21.582 21.582 21.582 IDLE ADJUSTMENT (gm/v), ST ENTER Ksn -1.90 -3,58 -3,43 -3.58 -3,58 -2.78 -2,78 -2.78 NA IDLE ADJUSTMENT (gm/v), ST EXIT Ksx 0.00 0.00 0.00 0.00 0,77 5.95 81.12 120.80 NA . IDLE ADJUSTMENT (gu/v), IT ENTER Kin -1.90 -3,42 -3,27 -3.42 -3.42 -2.65 -2.65 -2.65 NA IDLE ADJUSTMENT (gm/v), IT EXIT Kix 0,00 0.00 0.00 0,00 2.24 17.31 169.48 209.16 NA ' IDLE ADJUSTMENT (gm/v), LT ENTER Kin -3,40 -3.26 -3.12 -3.26 -3.26 -2.53 -2.53 -2,53 -3.12 ; ' ' IDLE ADJUSTMENT (gm/v), LT EXIT Kix 0.00 0.00 0.00 0.00 2.48 19.16 163.88 223.56 112.30 ST ENTERING EMISSIONS (grams) Qsn 0 0 0 0 0 ' 0 0 0 0 ! 0 ST EXITING EMISSIONS (grams) Qsx 0 0 0 0 0 0 0 0 0 ^- IT ENTERING EMISSIONS (grams) Gin 0 0 0 0 0 0 0 0 0 IT EXITING EMISSIONS (grams) Dix 0 0 0 0 0 0 0 0 0 LT ENTERING EMISSIONS (grams) Din 0 0 1,153 0 0 0 0 0 144 ; 1,153 LT EXITING EMISSIONS (grams) Dix 0 0 0 0 5,456 9,764 40,238 47,579 12,880 103,03 ST PARKING EMISSIONS (grams) Qsz 0 0 0 0 0 0 0 0 0 IT PARKING EMISSIONS (grams) Qiz 0 0 0 0 0 0 0 0 0 ' 0 LT PARKING EMISSIONS (grams) Qlz 0 0 1,153 0 5,456 9,764 40,238 47,579 13,024 104,19! ENTERING VEHICLE EMISSIONS (gm) Djn 0 0 1,153 0 0 0 0 0 144 ' 1,15 EXITING VEHICLE EMISSIONS (gm) Qjx 0 0 0 0 5,456 9,764 40,238 47,579 12,880 103,03. TOTAL EMISSIONS (grams) Qjz 0 0 1,153 0 5,456 9,764 40,238 47,579 13,024 104,190 TOTAL EMISSIONS (pounds) Qjz 0,0 0,0 2.5 0.0 12.0 21.5 88.7 104.9 28.7 229.: PERCENT EMISSIONS BY ST PARKERS 0.0% 0.0% 0,0% 0.0% 0,0% 0.0% 0.0X 0,0% 0.0X PERCENT EMISSIONS BY IT PARKERS 0,0X 0.0% 0.0% 0.0% 0,0% 0,0X 0.07. 0.0% 0.0% PERCENT EMISSIONS BY LT PARKERS 0.0% 0,0% 100.0X 0.0X 100.0X 100,0X 100.0X 100.0% 100.0X PERCENT TRIPS BY ST PARKERS 0,0% 0,0% 0.0% 0.0% 0.0% 0,07, 0.0% 0.0X 0.0X PERCENT TRIPS BY IT PARKERS 0.0X 0,0% 0.0X 0.0% 0.0X 0.0X 0.0X 0.0X 0.0X PERCENT TRIPS BY LT PARKERS 0.07. 0.0% 100.0X 0,07. 100.0% 100,0% 100.0% 100.0% 100,0X ST EMISSIONS/ST SPACE (gm/space) 0,00 ERR ERR ERR ERR ERR ERR ERR ERR IT EMISSIONS/IT SPACE (gm/space) 0.00 ERR ERR ERR ERR ERR ERR ERR ERR LT EMISSIONS/LT SPACE (gm/space) 0.00 0.00 1.44 0,00 6,82 12.21 50.30 59.47 16.28 ADJUSTED STx/STn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA _ ADJUSTED ITx/ITn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA ADJUSTED LTx/LTn EMISS RATE RATIO 4.47 4,45 4,38 4.45 4,78 6,81 28,04 33.16 19.01 X IDLE ADJUSTMENT, ST ENTERING 0,00X 0.00X 0.00% 0.007. 0.00% 0,00% 0.00X 0.00%, NA I X IDLE ADJUSTMENT, ST EXITING 0.00% 0.00% 0.00% 0.00X 0.00% 0.00X 0.00% 0.00X NA X IDLE ADJUSTMENT, IT ENTERING 0.00% 0.00X 0.00% 0.00% 0.00X 0.00X 0.00X 0.00% NA X IDLE ADJUSTMENT, IT EXITING 0,00% 0.007. 0.00% 0,00% 0,00% 0.00% 0.007. 0,007. NA X IDLE ADJUSTMENT, LT ENTERING 0.00% 0.00% -25.36X 0.00% 0.00% 0.00% 0.00X 0.00% -25.36X X IDLE ADJUSTMENT, LT EXITINGG 0,00X 0.00% 0.00% 0,00% 7,39% 56,987, 546.87%, 664.89% 333,99X X IDLE ADJUSTMENT, TOTAL ENTER 0.00% 0.00% -25.36% 0.00% 0.00X 0.00X 0.00% 0,00% -25,36X .` 7, IDLE ADJUSTMENT, TOTAL EXIT 0.00% 0.00% 0.00% 0,007, 7.39X 56,98X 546.87% 664,89% 333.99% X IDLE ADJUSTMENT, TOTAL 0.00% 0.00% -25,367. 0.00% 7.39X 56.98X 546,87X 664,89% 279.72% ' ENTERING VEHICLE VMT 0,00 0,00 26.47 0.00 0.00 0.00 0,00 0,00 3.31 26,47 EXITING VEHICLE VMT 0.00 0.00 0.00 0.00 26.63 32.60 32.60 32.60 15.55 124.43 TOTAL VMT INSIDE FACILITY 0.00 0.00 26.47 0.00 26.63 32,60 32.60 32.60 18,86 150.90 • Table B-16. Parking Emissions Model Results for Garage Alternative B2 PARAMETERS SYMBOL HOUR 1 HOUR 2 HOUR 3 HOUR 4 HOUR 5 HOUR 6 HOUR 7 HOUR 8 WTD MEAN TOTALS INPUT DATA: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE B2 MAX NUMBER OF LEVELS FROM ENTRANCE L 4 4 4 4 4 4 4 4 4 SHORT TERM (ST) SPACES Ps 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM (IT) SPACES Pi 0 0 0 0 0 0 0 0 0 LONG TERM (LT) SPACES P1 800 800 800 800 800 800 800 800 800 GROSS SQUARE FEET PER SPACE B 390.0 390.0 390.0 390.0 390.0 390.0 390,0 390.0 390.0 NUMBER OF EXIT LANES Nx 1 1 1 1 1 1 1 1 1.0 ST ENTERING TRIPS per 100 ST SPACES Ysn 0,0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ST EXITING TRIPS per 100 ST SPACES Ysx 0,0 0,0 0.0 0.0 0,0 0.0 0.0 0,0 0.0 IT ENTERING TRIPS per 100 IT SPACES Yin 0,0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 IT EXITING TRIPS per 100 IT SPACES 'fix 0.0 0.0 0.0 0,0 0,0 0.0 0.0 0.0 0.0 LT ENTERING TRIPS per 100 LT SPACES Yln 0.0 0,0 15.4 0.0 0.0 0,0 0.0 0.0 1.9 LT EXITING TRIPS per 100 LT SPACES Ylx 0.0 0,0 0.0 0.0 19.5 25.4 35,6 19.5 12.5 INITIAL DIST COEFFIC., ENTERING Fn 0.210 0.210 0.210 0.210 0.210 0.210 0.210 0,210 0,210 INITIAL DIST COEFFIC., EXITING Fx 0.210 0,210 0.210 0.210 0.210 0.210 0.210 0.210 0,210 EXTRA TRAVEL X, ENTERING VEHICLES Un 25 20 20 20 20 0 0 0 20.0 EXTRA TRAVEL %, EXITING VEHICLES Ux 0 0 0 0 0 0 0 0 0.0 ENGINE WARM-UP TIME (seconds/veh) Jx 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 10.0 IDLING AT ENTRANCE (sec/veh) in 3.0 3,0 3.0 3.0 3.0 3.0 3,0 3.0 3,0 IDLING AT EXIT POINT (sec/veh) ix 16.0 16.0 16.0 16.0 16.0 16,0 16.0 16.0 16.0 X VEHICLES WITH CATALYST C 86.97 86.97 86.97 86.97 86,97 86,97 86.97 86.97 86,97 X CAT COLD START, ST ENTERING PCCCsn 0.0 18.9 18.9 18.9 18,9 18,9 18.9 18,9 NA X CAT COLD START, IT ENTERING PCCCsn 0,0 16.9 16.9 16.9 16.9 16.9 16.9 16.9 NA X CAT COLD START, LT ENTERING PCCCsn 15.3 15,2 15.2 15.2 15.2 15,2 15.2 15.2 15.2 X NONCAT COLD START, ST ENTERING PCCNsn 0.0 11.7 11.7 11,7 11,7 11.7 11.7 11.7 NA X NONCAT COLD START, IT ENTERING PCCNin 0.0 11.8 11,8 11.8 11.8 11.8 11.8 11.8 NA X NONCAT COLD START, LT ENTERING PCCNIn 11,9 11.4 11.4 11,4 11.4 11,4 11.4 11.4 11.4 AVERAGE VEHICLE SPEED, 1-20 mph S 7 7 7 7 7 7 7 7 7 HOT IDLE RATE (grams/minute) Ih 3,4400 3,4400 3.4400 3,4400 3.4400 3,4400 3.4400 3.4400 3.4400 100X COLD RATE @ 5 MPH (gm/mile) Ec 258.98 258.98 258.98 258,98 258.98 258.98 258.98 258.98 258.98 ST ENTERING RATE, (grams/mile) Esn 0,00 0.00 0.00 0.00 0.00 0,00 0.00 0.00 NA ' ST EXITING RATE, (grams/mile) Esx 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 NA 1 IT ENTERING RATE, (grams/mile) Ein 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 NA IT EXITING RATE, (grams/mile) Eix 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 NA LT ENTERING RATE, (grams/mile) Eln 58.36 58,36 58.36 58.36 58,36 58,36 58,36 58,36 58.36 LT EXITING RATE, (grams/mile) Elx 190.80 190.80 190.80 190.80 190.80 190.80 190,80 190.80 190.80 IDLE ADJUSTMENT (gm/v), ST ENTER Ksn -2.10 -3.87 -3,60 -3,87 -3.87 -2.96 -2.96 -2.96 NA ! IDLE ADJUSTMENT (gm/v), ST EXIT Ksx 0.00 0,00 0,00 0.00 0,57 15,22 80,46 113.07 NA IDLE ADJUSTMENT (gm/v), IT ENTER Kin -2.10 -3.69 -3.43 -3.69 -3.69 -2.82 -2.82 -2.82 NA IDLE ADJUSTMENT (gm/v), IT EXIT Kix 0,00 0,00 0.00 0.00 1,65 44,28 166.39 199.00 NA IDLE ADJUSTMENT (gm/v), LT ENTER Kin -3.75 -3,52 -3,27 -3,52 -3,52 -2.70 -2.70 -2.70 -3,27 , IDLE ADJUSTMENT (gm/v), LT EXIT Klx 0,00 0.00 0.00 0.00 1.83 49.02 180.39 213.00 115.53 ST ENTERING EMISSIONS (grams) Qsn 0 0 0 0 0 0 0 0 0 0 ST EXITING EMISSIONS (grams) Qsx 0 0 0 0 0 0 0 0 0 4 IT ENTERING EMISSIONS (grams) Qin 0 0 0 0 0 0 0 0 0 0 IT EXITING EMISSIONS (grams) Qix 0 0 0 0 0 0 0 0 0 0 LT ENTERING EMISSIONS (grams) Din 0 0 1,305 0 0 0 0 0 163 1,305 LT EXITING EMISSIONS (grams) Qlx 0 0 0 0 6,188 16,073 40,377 46,409 13,631 109,04'7 ST PARKING EMISSIONS (grams) Qsz 0 0 0 0 0 0 0 0 0 0 IT PARKING EMISSIONS (grams) Qiz 0 0 0 0 0 0 0 0 0 0 , LT PARKING EMISSIONS (grams) Qlz 0 0 1,305 0 6,18B 16,073 40,377 46,409 13,794 110,352 ENTERING VEHICLE EMISSIONS (gm) Qjn 0 0 1,305 0 0 0 0 0 163 1,305 EXITING VEHICLE EMISSIONS (gm) Qjx 0 0 0 0 6,188 16,073 40,377 46,409 13,631 109,047 TOTAL EMISSIONS (grams) Qjz 0 0 1,305 0 6,188 16,073 40,377 46,409 13,794 110,352 TOTAL EMISSIONS (pounds) Qjz 0,0 0.0 2,9 0.0 13,6 35.4 89.0 102.3 30.4 243.3 PERCENT EMISSIONS BY ST PARKERS 0.07. 0,0% 0.0% 0.0X 0.0% 0.07, 0,07, 0,0X 0.07, PERCENT EMISSIONS BY IT PARKERS 0.0% 0,0X 0,0% 0.0X 0,0% 0.0X 0,0% 0,0X 0,0% PERCENT EMISSIONS BY LT PARKERS 0,0% 0.0X 100,07. 0,07, 100.0% 100.0% 100.0% 100.07, 100,07. PERCENT TRIPS BY ST PARKERS 0,0% 0,0X 0,0% 0,0X 0,0X 0,0X 0,0X 0.0X 0,0% II PERCENT TRIPS BY IT PARKERS 0.0% 0,0% 0,0% 0.0X 0.07, 0,0X 0,0X 0.0% 0.0% PERCENT TRIPS BY LT PARKERS 0.0% 0.0X 100,0% 0,0% 100,0% 100.0% 100,0% 100,0X 100.0% I ST EMISSIONS/ST SPACE (gm/space) 0.00 ERR ERR ERR ERR ERR ERR ERR ERR 1 IT EMISSIONS/IT SPACE (gm/space) 0,00 ERR ERR ERR ERR ERR ERR ERR ERR LT EMISSIONS/LT SPACE (gm/space) 0.00 0.00 1.63 0.00 7.74 20.09 50,47 58.01 17.24 ADJUSTED STx/STn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA ADJUSTED ITx/ITn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA , ADJUSTED LTx/LTn EMISS RATE RATIO 4.42 4.39 4.28 4,39 4.60 9,78 24,57 28,24 17.34 7 IDLE ADJUSTMENT, ST ENTERING 0.00% 0.00%, 0.00% 0.007. 0.00% 0,00% 0,00X 0.00X NA X IDLE ADJUSTMENT, ST EXITING 0.00X 0.00% 0,00% 0.00% 0.00X 0.00X 0,00X 0,00X NA X IDLE ADJUSTMENT, IT ENTERING 0.00% 0,00X 0,00X 0,00% 0,00% 0.007. 0.00% 0.00X NA X IDLE ADJUSTMENT, IT EXITING 0.00% 0.00% 0,007. 0,00% 0.00X 0.00% 0,00%, 0,00% NA X IDLE ADJUSTMENT, LT ENTERING 0.00% 0.00% -23.63X 0,00% 0.00% 0,007. 0,00X 0,00X -23,637. 1 X IDLE ADJUSTMENT, LT EXITING 0,00%, 0.00% 0,00% 0,00X 4,84X 129.46X 476,44% 562.55% 305,13% X IDLE ADJUSTMENT, TOTAL ENTER 0,00X 0.00X -23,637 0,00% 0,00% 0.00% 0.00% 0.007, -23.637, X IDLE ADJUSTMENT, TOTAL EXIT 0.00% 0.00% 0.00% 0.00% 4.84X 129.46X 476.447. 562,55X 305,13% X IDLE ADJUSTMENT, TOTAL 0.00% 0.00% -23.63X 0,00% 4.84% 129.46% 476.44X 562,55% 256.50X ENTERING VEHICLE VMT 0.00 0.00 29,29 0.00 0.00 0.00 0,00 0.00 3.66 29.29 ' EXITING VEHICLE VMT 0,00 0.00 0,00 0.00 30.94 36,71 36,71 36,71 17,63 141,07! _ TOTAL VMT INSIDE FACILITY 0.00 0.00 29,29 0.00 30.94 36.71 36,71 36.71 21.30 170.36, , I 1 ' MODEL OUTPUT: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE 82 1 TOTAL SPACES P 800 800 800 800 800 800 800 800 800 ' GROSS PARKING AREA (square feet) A 312,000 312,000 312,000 312,000 312,000 312,000 312,000 312,000 312,000 EXIT DEMAND, SHORT TERM Vdsx 0 0 0 0 0 0 0 0 0 0 EXIT DEMAND, INTERMEDIATE TERM Vdix 0 0 0 0 0 0 0 0 0 0 EXIT DEMAND, LONG TERM ' Vdlx 0 0 0 0 156 203 285 156 100 800 TOTAL EXIT DEMAND Vdjx 0 0 0 0 156 203 285 156 100 800 TOTAL EXIT CAPACITY Xc 185 185 185 185 185 185 185 185 185 MEAN EXIT QUEUE (vehicles/lane) Xq 0.0 0.0 0.0 0,0 0.8 9.0 68.1 103,6 22,7 ST EXIT CARRY-OVER (vehicles) Vqs 0 0 0 0 0 0 0 0 0,0 IT EXIT CARRY-OVER (vehicles) Vqi 0 0 0 0 0 0 0 0 0.0 LT EXIT CARRY-OVER (vehicles) Vql 0 0 0 0 0 18 118 89 28,2 TOTAL EXIT CARRY-OVER (vehicles) Vq 0 0 0 0 0 18 118 89 28.2 SHORT TERM ENTERING TRIPS Vsn 0 0 0 0 0 0 0 0 0 0 SHORT TERM EXITING TRIPS Vsx 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM ENTERING TRIPS Vin 0 0 0 0 0 0 0 0 0 0 ' INTERMEDIATE TERM EXITING TRIPS Vix 0 0 0 0 0 0 0 0 0 0 LONG TERM ENTERING TRIPS Vln 0 0 123 0 0 0 0 0 15 123 LONG TERM EXITING TRIPS Vlx 0 0 0 0 156 185 185 185 89 711 TOTAL ENTERING TRIPS Vjn 0 0 123 0 0 0 0 0 15 123 i TOTAL EXITING TRIPS Vjx 0 0 0 0 156 185 185 185 89 711 TOTAL TRIPS Vjz 0 0 123 0 156 185 185 185 104 834 FINAL DIST COEFFICIENT, ENTERING On 1.840 1,840 1.840 1,840 1,840 1.840 1.840 1,840 1,840 FINAL DIST COEFFICIENT, EXITING Gx 1.840 1.840 1.840 1,540 1.840 1,840 1.840 1.840 1,840 MEAN TRAVEL PATH (feet/vehicle) 0 NA NA 1,028 NA 1,028 1,028 1,028 1,028 NA ENTERING VEHICLE TRAVEL (ft/veh) Dn 1,305 1,253 1,253 1,253 1,253 1,048 1,048 1,048 1,253 EXITING VEHICLE TRAVEL (ft/veh) Dx 1,048 1,048 1,048 1,048 1,048 1,048 1,048 1,048 1,048 MAXIMUM ENTER IDLE TIME (sec/veh) Mn 15 15 17 15 15 15 15 15 17,5 MINIMUM EXIT IDLE TIME (sec/veh) Mx 30 30 30 30 47 178 1123 1592 789,2 MOBILE/EMFAC IDLE TIME FRACTION H 0,4067 0,4067 0.4067 0,4067 0,4067 0.4067 0.4067 0.4067 0.4067 ' IDLE TIME COEFFICIENT (sec/ft) R. 0,0396 0.0396 0.0396 0,0396 0,0396 0.0396 0.0396 0.0396 0.0396 MOBILE/EMFAC ENTER IDLE SECONDS Tn 52 50 50 50 50 42 42 42 49,7 MOBILE/EMFAC EXIT IDLE SECONDS Tx 42 42 42 42 42 42 42 42 41.5 MEAN EXIT TIME (seconds/vehicle) Xt 0 0 0 0 107 238 1,184 1,753 850 X CAT COLD START, ST EXITING PCCCsx 0,0 18.9 18.9 18.9 18,9 18,9 18,9 18.9 NA ' X CAT COLD START, IT EXITING PCCCix 100.0 100,0 100.0 100.0 100,0 100.0 100.0 100,0 NA Z CAT COLD START, LT EXITING PCCCsx 100.0 100.0 100.0 100,0 100.0 100.0 100.0 100.0 100.0 ' ' X NONCAT COLD START, ST EXITING PCCNsx 0,0 11.7 11.7 11.7 11.7 11.7 11.7 11.7 NA 7 NONCAT COLD START, IT EXITING PCCNix 0.0 11.8 11.8 11,8 11.8 11.8 11.8 11.8 NA X NONCAT COLD START, LT EXITING PCCNsx 100.0 100.0 100,0 100.0 100,0 100.0 100.0 100.0 100.0 X COLD STARTS, ST ENTERING TRIPS Wsn 0.0 18,0 18.0 18.0 18.0 18,0 18,0 18.0 NA X COLD STARTS, ST EXITING TRIPS Wsx 0.0 18.0 18.0 18.0 18.0 18.0 18,0 18.0 NA X COLD STARTS, IT ENTERING TRIPS Win 0.0 16.3 16,3 16,3 16.3 16.3 16.3 16,3 NA X COLD STARTS, IT EXITING TRIPS Wix 87,.0 88,5 88.5 88.5 88,5 88.5 88,5 88.5 NA X COLD STARTS, LT ENTERING TRIPS Win 14.9 14.7 14.7 14,7 14.7 14.7 14,7 14,7 14,7 X COLD STARTS, LT EXITING TRIPS Wlx 100.0 100.0 100.0 100,0 100.0 100.0 100.0 100.0 100.0 100% COLD IDLE RATE (gm/min) lc 21.582 21.582 21.582 21.582 21,582 21.582 21,582 21.582 21.582 _ _ COLD/HOT IDLE (gm/sin), ST ENTER Isn 3.440 6.702 6,702 6.702 6.702 6.702 6.702 6.702 NA COLD/HOT IDLE (gilain), ST EXIT Isx 3.440 6,702 6,702 6,702 6,702 6.702 6,702 6,702 NA COLD/HOT IDLE (galain), IT ENTER Iin 3.440 6.390 6,390 6,390 6.390 6.390 6.390 6.390 NA COLD/HOT IDLE (gm/min), IT EXIT Iix 19.218 19,497 19,497 19.497 19,497 19.497 19.497 19,497 NA COLD/HOT IDLE (gm/min), LT ENTER Iln 6.140 6.103 6.103 6.103 6.103 6,103 6.103 6.103 6.103 , COLD/HOT IDLE (gulain), LT EXIT Iix 21.582 21.582 21.582 21.582 21.582 21.582 21.582 21.582 21.582 Table 11-17. Peat four Carbon Monoxide Coacentratioas(ppe) Inside toe Proposed DI Parking Serape-One Esit Lane and 40 Percent Net Open Area LEVEL FLOOR PEAK HOUR CO SIDES MEAN 1OPENINO OUTSIDE FLOOR NATURAL, NATURAL NATURAL `MECHANICAL MECHANICAL MECHANICAL TOTAL INTERNAL(1 OF AREA EMISSIONS (=BOND OPEN EFFECTIVENESS MIND SPEED LENGTH VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION PEAK HOUR SPACES) (SO FT) (GRAMS/HR1 DIRECTION) AREA FACTOR (IVSEC) (FT) (EICNAN6ES/NR) (CFN) (CFN/SPACE) (EICHAN6ES/HR) (CFM) (CFN/SPACE) (E1CNAN5ES/HR) CO(PPN) IASEMENTS 0 0 N OR S 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 MA ( 0) E OR N 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 NA ALL MA 1.0 1.0 0 NA MA 0 0.0 0 0 NA NA GROUND 100,800 26,433 MDR S 40.01 1.0 1.0 320 22.0 442,996 1,772 0.0 0 0 22.0 30.7 ( 250) E OR N 40.01 1.0 1.0 215 14.8 297,639 1,191 0.0 0 0 14.8 45.7 ALL 40.01 1.0 1.0 268 17.7 356,053 1,424 0.0 0 0 17.7 38.2 LEVEL 2 100,800 15,104 N 02 S 40.01 1.0 1.0 320 15.0 251,969 916 0.0 0 0 15.0 30.8 ( 275) E OR N 40.01 1.0 1.0 315 14.8 248,031 902 0.0 0 0 14.8 31.3 ALL 40.01 1.0 1.0 318 14.9 249,984 909 0.0 0 0 14.9 31.1 LEVEL 3 100,800 6,042 N OR S 100.01 1.0 1.0 320 37.5 629,921 2,291 0.0 0 0 37.5 4.9 ( 215) E OR N 100.01 1.0 1.0 315 36.9 620,079 2,255 0.0 0 0 36.9 5.0 ALL 100.01 1.0 1.0 318 37.2 624,961 2,273 0.0 0 0 37.2 5.0 >/ «§E � ■■; e - ..� CO�•I ce _ _g& , --- § e | . IA Or Or :fl ;:■ &)§ --- --- OI0, g§ J;§ n=q §§� \\j ,e, e o e ,,, k)� 06 d!K : : ' »:: ::: ;:: d() (§\ „° /\\ ;e; \/} . §) °°� \\/ /\/ \\\ r. 1.461 2§I :J 24. 2 cocoa _ N/7 f / ,., n§m §§m nnm d ( @m§ 2 .-- 2 •-2 §}; 4; -.a i §k§ i -- --- --- - .2 ®§ . ! . f7 �2 � $ ]]a ){- 7a� 2 --- 2«f |!� nI In � 00 „ 'E 2■ , 0 a a _ .. .� ,§ 22 ` a ) &, 2B% -a \ \ } \\� _ 2 §7B ■k U.§ -2 © B- ■- G- -- 4 Table 1-19. Pat Hour Carton Monoxide Concentrations(ppe) Inside the Proposed 12 Parting Garage-One hit Lane and 40 Percent Net Open Area M1 LEVEL FLOOR PEAK HOUR CO SIDES MEAN 1 OPENING OUTSIDE FLOOR NATURAL NATURAL NATURAL MECHANICAL MECHANICAL MECHANICAL TOTAL INTERNAL (1 OF AREA EMISSIONS (=RIND OPEN EFFECTIVENESS VINO SPEED LENGTH VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION PEAK HOUR SPACES) (SO PT) (GRAMS/HR) DIRECTION) AREA FACTOR (R/SEC) (FT) (EICHANGES/HR) (CFR) (CFM/SPACE) (EICHANGES/HR) (CFR) (CFA/SPACE) (EICHANGES/HR) CO(PPM) BASEMENTS 0 0 A OR S 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 NA ( 0) E DR V 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 NA ALL NA 1.0 1.0 0 NA KA 0 0.0 0 0 NA NA 1310080 78,000 21,095 N OR S 40.01 1.0 1.0 390 23.6 368,104 1,129 0.0 0 0 23.6 29.4 ( I'll 1 E OR V 40.01 1.0 1.0 200 12.1 188,1/6 181 0.0 0 0 12.1 57.4 ALL 10.01 1.0 1.0 215 11.0 241,831 1,300 0.0 0 0 16.0 43.4 _C.LL ? 70,000 14,063 N U8 5 40.0/ I.0 ;.0 310 23.6 107,087 1,511 0.0 0 0 :LE( 23.5 ( 203 7 E OR V 40.01 1.0 1.0 200 12.1 157,400 776 0.0 0 0 12.1 45.9 ALL 40.01 1.0 1.0 295 16.0 208,194 1,026 0.0 0 0 16.0 34.7 LEVEL 3 79,000 8,036 N OR S 40.01 1.0 1.0 390 23.6 307,087 1,513 0.0 0 0 23.6 13.5 ( 203 7 E OR V 40.01 1.0 1.0 200 12.1 157,480 776 0.0 0 0 12.1 26.2 ALL 40.01 1.0 1.0 295 16.0 208,194 1,026 0.0 0 0 16.0 19.0 LEVEL 4 78,000 3,214 NOR S 100.01 1.0 1.0 390 59.1 767,717 3,782 0.0 0 0 59.1 2.2 ( 203 1 E OR V 100.0I 2.0 1.0 200 30.3 393,701 1,939 0.0 0 0 30.3 4.2 ALL 100.01 1.0 1.0 295 40.0 520,486 2,564 0.0 0 0 40.0 3.2 1 Bile 1-20. 1-11osr Average Cu1aa Maeodde Coocntratioas (ppa) !aside the •Prolosed 12 Partial Barge-Oae Lilt Lane aal 40 Perceat Net Opea Area LEVEL FLOOR 8-10O1IR CO SIDES MEAN I OPENING OUTSIDE FLOOR NATURAL NATURAL NATURAL MECHANICAL MECHANICAL MECHANICAL TOTAL INTERNAL (1 OF AREA EMISSIONS (.BIB OPEN EFFECTIVENESS VINO SPEED LENGTH VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION 8-11012 SPACES) (SO FT) (GRAMS/NR)DIRECTION) AREA FACTOR (M/5EC1 (FT) (EICHANBES/HR) (OW (CFM/SPACE) (EICH/MES/HRI (CFM) (COI/SPACE) (EICHANSES/HR) CO(PPM) BASEMENTS 0 0 N 0R S 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 .NA ( 0) EDRN 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 NA ALL NA 1.0 1.0 0 NA NA 0 0.0 0 0 NA NA GROUND 78,000 6,270 N OR S 40.01 1.0 1.0 390 23.6 368,504 1,929 0.0 0 0 23.6 8.7 ( 191) E OR V 40.01 1.0 1.0 200 12.1 188,976 989 0.0 0 0 12.1 17.1 ALL 40.01 1.0 1.0 295 16.0 249,833 1,308 0.0 0 0 16.0 12.9 LEVEL 2 78,000 4,180 M OR S 40.01 1.0 1.0 310 23.6 307,087 1,513 0.0 0 0 23.6 7.0 ( 203) E OR V 40.01 1.0 1.0 200 12.1 157,480 776 0.0 0 0 12.1 13.6 ALL 40.01 1.0 1.0 295 16.0 208,194 1,026 0.0 0 0 16.0 10.3 LEVEL 3 78,000 2,389 NOR 5 40.01 1.0 1.0 390 23.6 307,087 1,513 0.0 0 0 23.6 4.0 f 203) E OR V 40.01 1.0 1.0 200 12.1 157,480 776 0.0 0 0 12.1 7.8 ALL 40.01 1.0 1.0 295 16.0 208,194 - 1,026 0.0 0 0 16.0 5.9 LEVEL 4 78,000 955 N 00 S 100.0I 1.0 1.0 390 59.1 767,717 3,782 0.0 0 0 59.1 0.6 ( 203) E OR 8 100.01 1.0 1.0 200 :0.3 393,70! 1,939 0.0 0 0 30.3 1.2 ALL 100.02 1.0 1.0 215 40.0 520,486 2,564 0.0 0 0 40.0 0.9 Table B-21, Carbon Monoxide Impacts From Renton Parking Garage Alternative B1 with One Exit Lane and 40% Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 38.2 36.7 34.8 29.5 24.3 17.9 12.8 8,0 Level 2 31.1 26.7 25.4 22.3 18.7 14.0 10.3 6.4 Level 3 5.0 3,4 3.3 3.0 2.7 2.1 1,6 1.0 Total 66.7 63.5 54.9 45.7 34,1 24.7 15.4 Mean Dispersion Downwind of Garage 8-Hour Average Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 12.4 11.9 11.3 9.6 7.9 5.8 4.2 2.6 Level 2 8.5 7.3 7.0 6,1 5,1 3,8 2.8 1.8 Level 3 1.4 0.9 0.9 0.8 0.7 0.6 0.4 0.3 Total 20.1 19.2 16.5 13,7 10,2 7.4 4.6 JI 1 Table 8-22. Carbon Monoxide Impacts from Renton Parking Garage • Alternative B2 with One Exit Lane and 40X Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 43.4 41.7 39.6 33.6 27,6 20.3 14.6 9.1 Level 2 34,7 29.8 28.4 24.9 20,9 15.7 11.5 7.1 Level 3 19.8 13.4 13.1 12.2 10.7 8.5 6,3 4.1 Level 4 3.2 1.7 1.6 1.5 1.4 1,2 0.9 0.6 Total 86.6 82.7 72.2 60.7 45.7 33.4 20,9 8-Hour Average Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint • Level Inside 10 25 75 150 300 500 1000 Level 1 12,9 12.4 11.8 10.0 8,2 6.0 4,3 2,7 Level 2 10.3 8.9 8.4 7.4 6.2 4.7 3.4 2.1 Level 3 5,9 4.0 3.9 3,6 3.2 2.5 1.9 1.2 Level 4 0,9 0.5 0.5 0.4 0.4 0.4- 0.3 0.2 Total 25.7 24.6 21.4 18.0 13.6 9.9 6.2 Table 8-23. Parking Emissions Model Results for Garage Alternative B1 - ' Two Exit Lanes , i PARAMETERS SYMBOL HOUR 1 HOUR 2 HOUR 3 HOUR 4 HOUR 5 HOUR 6 HOUR 7 HOUR 8 WTD MEAN TOTALS INPUT DATA: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE 131 MAX NUMBER OF LEVELS FROM ENTRANCE L 3 3 3 3 3 3 3 3 3 SHORT TERM (ST) SPACES Ps 0 0 • 0 0 0 0 0 0 0 INTERMEDIATE TERM (IT) SPACES Pi 0 0 0 0 0 0 0 0 0 1 LONG TERM (LT) SPACES PI 800 800 800 800 800 800 800 800 800 GROSS SQUARE FEET PER SPACE B 378.0 390,0 390.0 390.0 390,0 390,0 390,0 390.0 388.5 NUMBER OF EXIT LANES Nx 2 2 2 2 2 2 2 2 2.0 ST ENTERING TRIPS per 100 ST SPACES Ysn 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0. 0.0 ST EXITING TRIPS per 100 ST SPACES Ysx 0.0 0,0' 0.0 0.0 0.0 0.0 0.0 0.0 0.0 IT ENTERING TRIPS per 100 IT SPACES Yin 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 IT EXITING TRIPS per 100 IT SPACES Yix 0.0 0.0 0.0 0.0 0.0 0,0 0.0 0.0 0,0 LT ENTERING TRIPS per 100 LT SPACES Yln 0.0 0.0 15.7 0.0 0,0 0.0 0.0 0.0 2.0 LT EXITING TRIPS per 100 LT SPACES Ylx 0,0 0,0 0.0 0.0 18.9 24.0 38.2 18.9 12.5 INITIAL DIST COEFFIC., ENTERING Fn 0.210 0.210 0.210 0.210 0.210 0.210 0.210 0.210 0.210 INITIAL DIST COEFFIC., EXITING Fx 0.210 0,210 0.210 0.210 0.210 0.210 0.210 0.210 0.210 EXTRA TRAVEL %, ENTERING VEHICLES Un 25 20 20 20 20 0 0 0 20.0 EXTRA TRAVEL X, EXITING VEHICLES Ux 0 0 0 0 0 0 0 0 0.0 ENGINE WARM-UP TIME (seconds/veh) Jx 10.0 10,0 10.0 10.0 10,0 10.0 10.0 10.0 10.0 IDLING AT ENTRANCE (sec/veh) Zn 3.0 3.0 3.0 3,0 3.0 3.0 3.0 3.0 3,0 IDLING AT EXIT POINT (sec/veh) Zx 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 X VEHICLES WITH CATALYST C 86.97 86.97 86.97 86,97 86.97 86,97 86.97 86,97 86.97 X CAT COLD START, ST ENTERING PCCCsn 0.0 18,9 18.9 18.9 18.9 18.9 18.9 18.9 NA Z CAT COLD START, IT ENTERING PCCCin 0.0 16.9 16.9 16.9 16.9 16.9 16.9 16,9 NA X CAT COLD START, LT ENTERING PCCCsn 15.3 15.2 15.2 15.2 15.2 15.2 15.2 15.2 15.2 X NONCAT COLD START, ST ENTERING PCCNsn 0,0 11.7 11.7 11.7 11.7 11.7 11.7 11.7 NA X NONCAT COLD START, IT ENTERING PCCNin 0.0 11.8 11.8 11.8 11.8 11,8 11.8 11,8 NA !. X NONCAT COLD START, LT ENTERING PCCN1n 11.9 11.4 11.4 11.4 11.4 11.4 11.4 11.4 11.4 ! .- AVERAGE VEHICLE SPEED, 1-20 mph S 7 7 7 7 7 7 7 7 7 HOT IDLE RATE (grams/minute) Ih 3.4400 3.4400 3.4400 3,4400 3.4400 3.4400 3,4400 3.4400 3,4400 100% COLD RATE @ 5 MPH (gm/mile) Ec 258.98 258.98 258,98 258,98 258.98 256,98 258,96 258.98 258.98 ST ENTERING RATE, (grams/mile) Esn 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 NA ST EXITING RATE, (grams/mile) Esx 0.00 0.00 0.00 0,00 0.00 0.00 0,00 0.00 NA , IT ENTERING RATE, (grams/mile) Ein 0.00 0.00 0,00 0.00 0.00 0.00 0.00 0.00 NA IT EXITING RATE, (grams/mile) Eix 0,00 0.00 0.00 0.00 0,00 0.00 0.00 0.00 NA LT ENTERING RATE, (grams/mile) Eln 58.36 58.36 58.36 58.36 58.36 58.36 58,36 58.36 58.36 LT EXITING RATE, (grams/mile) Elx 190,80 190.80 190.80 190.80 190.60 190.80 190.80 190.80 190.80 MODEL OUTPUT: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE Bl . TOTAL SPACES P 800 B00 B00 800 B00 800 800 800 800 GROSS PARKING AREA (square feet) A 302,400 312,000 312,000 312,000 312,000 312,000 312,000 312,000 310,800 EXIT DEMAND, SHORT TERM Vdsx 0 0 0 0 0 0 0 0 0 0 EXIT DEMAND, INTERMEDIATE TERM Vdix 0 0 0 0 0 0 0 0 0 0 EXIT DEMAND, LONG TERM Vdlx 0 0 0 0 151 192 305 151 100 800 TOTAL EXIT DEMAND Vdjx 0 0 0 0 151 192 305 151 100 800 TOTAL EXIT CAPACITY Xc 371 371 371 371 371 371 371 371 371 MEAN EXIT QUEUE (vehicles/lane) Xq 0,0 0,0 0,0 0.0 0.4 0.5 0.8 0.4 0.3 ' ST EXIT CARRY-OVER (vehicles) Vqs 0 0 0 0 0 0 0 0 0.0 IT EXIT CARRY-OVER (vehicles) Vqi 0 0 0 0 0 0 0 0 0,0 LT EXIT CARRY-OVER (vehicles) Vql 0 0 0 0 0 0 0 0 0.0 TOTAL EXIT CARRY-OVER (vehicles) Vq 0 0 0 0 0 0 0 0 0.0 SHORT TERM ENTERING TRIPS Vsn 0 0 0 0 0 0 0 0 0 0 SHORT TERM EXITING TRIPS Vsx 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM ENTERING TRIPS Vin 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM EXITING TRIPS Vix 0 0 0 0 0 0 0 0 0 0 - LONG TERM ENTERING TRIPS Vln 0 0 126 0 0 0 0 0 16 126 LONG TERM EXITING TRIPS Vlx 0 0 0 0 151 192 305 151 100 800 TOTAL ENTERING TRIPS Vjn 0 0 126 0 0 0 0 0 16 126 TOTAL EXITING TRIPS Vjx 0 0 0 0 151 192 305 151 100 800 TOTAL TRIPS Vjz 0 0 126 0 151 192 305 151 116 926 FINAL DIST COEFFICIENT, ENTERING On 1.630 1.630 1.630 1.630 1.630 1.630 1.630 1,630 1,630 FINAL DIST COEFFICIENT, EXITING Gx 1,630 1.630 1.630 1.630 1,630 1.630 1.630 1.630 1.630 MEAN TRAVEL PATH (feet/vehicle) D NA NA 910 NA 910 910 910 910 NA ENTERING VEHICLE TRAVEL (ft/veh) Dn 1,140 1,113 1,113 1,113 1,113 930 930 930 1,113 EXITING VEHICLE TRAVEL (ft/veh) Dx 916 930 930 930 930 930 930 930 930 ' MAXIMUM ENTER IDLE TIME (sec/veh) Mn 12 12 13 12 12 12 12 12 13.4 MINIMUM EXIT IDLE TIME (sec/veh) Mx 29 29 29 29 37 39 46 37 41.0 MOBILE/EMFAC IDLE TIME FRACTION H 0.4067 0.4067 0,4067 0,4067 0,4067 0.4067 0.4067 0.4067 0.4067 IDLE TIME COEFFICIENT (sec/ft) R 0,0396 0.0396 0,0396 0.0396 0,0396 0,0396 0.0396 0.0396 0.0396 MOBILE/EMFAC ENTER IDLE SECONDS Tn 45 44 44 44 44 37 37 37 44.1 MOBILE/EMFAC EXIT IDLE SECONDS Tx 36 37 37 37 37 37 37 37 36,9 MEAN EXIT TIME (seconds/vehicle) Xt 0 0 0 0 91 93 99 91 95 ' X CAT COLD START, ST EXITING PCICCsx 0.0 18.9 18.9 18,9 18,9 18.9 18.9 18.9 NA X CAT COLD START, IT EXITING PCCCix 100.0 100,0 100,0 100.0 100.0 100.0 100,0 100,0 NA ' X CAT COLD START, LT EXITING PCCC1x 100,0 100.0 100.0 100.0 100,0 100,0 100,0 100.0 100.0 • X NONCAT COLD START, ST EXITING PCCNsx 0.0 11,7 11.7 11.7 11.7 11.7 11.7 11.7 NA X NONCAT COLD START, IT EXITING PCCNix 0.0 11.8 11.8 11,8 11.8 11.8 11.8 11.8 NA X NONCAT COLD START, LT EXITING PCCNIx 100,0 100.0 100,0 100.0 100.0 100.0 100.0 100.0 100.0 X COLD STARTS, ST ENTERING TRIPS Wsn 0.0 18,0 18,0 18.0 18.0 18,0 18.0 18.0 NA - X COLD STARTS, ST EXITING TRIPS Wsx 0.0 18.0 18.0 18.0 18.0 18.0 18.0 18,0 NA X COLD STARTS, IT ENTERING TRIPS Win 0.0 16.3 16.3 16.3 16.3 16,3 16.3 16,3 NA X COLD STARTS, IT EXITING TRIPS Wix 87.0 88.5 88,5 88,5 88.5 88.5 88,5 88.5 NA X COLD STARTS, LT ENTERING TRIPS Win 14.9 14.7 14.7 14,7 14,7 14.7 14.7 14.7 14,7 X COLD STARTS, LT EXITING TRIPS Wlx 100.0 100.0 100.0 100.0 100.0 100,0 100.0 100,0 100.0 100X COLD IDLE RATE (go/sin) lc 21.592 21.582 21.582 21.582 21.582 21.582 21.582 21.582 21.582 COLD/HOT IDLE (go/sin), ST ENTER Isn 3.440 6.702 6.702 6.702 6.702 6,702 6.702 6.702 NA COLD/HOT IDLE (gm/min), ST EXIT Isx 3.440 6.702 6,702 6.702 6.702 6.702 6.702 6.702 NA COLD/HOT IDLE (gay/sin), IT ENTER Iin 3.440 6.390 6.390 6.390 6.390 6,390 6.390 6.390 NA COLD/HOT IDLE (gm/min), IT EXIT fix 19,218 19.497 19.497 19.497 19.497 19.497 19,497 19.497 NA COLD/HOT IDLE (go/sin), LT ENTER Iln 6.140 6.103 6.103 6.103 6.103 6,103 6.103 6,103 6,103 COLD/HOT IDLE (gs/sin), LT EXIT Ilx 21,582 21.582 21.582 21.582 21.582 21,582 21.582 21,582 21.582 IDLE ADJUSTMENT (gm/v), ST ENTER Ksn -1.90 -3,58 -3.43 -3.58 -3,58 -2.78 -2,78 -2,78 NA IDLE ADJUSTMENT (gm/v), ST EXIT Ksx 0.00 0.00 0,00 0.00 0.04 0.29 0.98 0.04 NA IDLE ADJUSTMENT (gm/v), IT ENTER Kin -1,90 -3.42 -3.27 -3,42 -3.42 -2.65 -2,65 -2.65 NA IDLE ADJUSTMENT (gu/v), IT EXIT Kix 0.00 0.00 0.00 0.00 0.12 0,84 2,84 0,12 NA IDLE ADJUSTMENT (gm/v), LT ENTER Kin -3.40 -3.26 -3.12 -3.26 -3.26 -2.53 -2.53 -2.53 -3.12 IDLE ADJUSTMENT (gm/v), LT EXIT Klx 0,00 0.00 0.00 0.00 0.13 0,94 3.15 0,13 1.47 ' ST ENTERING EMISSIONS (grams) Qsn 0 0 0 0 0 0 0 0 0 10 ST EXITING EMISSIONS (grams) Qsx 0 0 0 0 0 0 0 0 0 0 IT ENTERING EMISSIONS (grams) gin 0 0 0 0 0 0 0 0 0 0 IT EXITING EMISSIONS (grams) Dix 0 0 0 0 0 0 0 0 0 0 ' LT ENTERING EMISSIONS (grams) Din 0 0 1,153 0 0 0 0 0 144 1,153 LT EXITING EMISSIONS (grams) Dl.x 0 0 0 0 5,100 6,648 11,230 5,100 3,510 28,078 ST PARKING EMISSIONS (grams) Qsz 0 0 0 0 0 0 0 0 0 ;0 IT PARKING EMISSIONS (grams) Qiz 0 0 0 0 0 0 0 0 0 :0 LT PARKING EMISSIONS (grams) Qlz 0 0 1,153 0 5,100 6,648 11,230 5,100 3,654 29,231 ENTERING VEHICLE EMISSIONS (gm) Qjn 0 0 1,153 0 0 0 0 0 144 1,153 EXITING VEHICLE EMISSIONS (gm) Qjx 0 0 0 0 5,100 6,648 11,230 5,100 3,510 28,078 TOTAL EMISSIONS (grams) Qjz 0 0 1,153 0 5,100 6,648 11,230 5,100 3,654 29,231 TOTAL EMISSIONS (pounds) Qjz 0.0 0.0 2.5 0.0 11.2 14.7 24.8 11,2 8,1 64.4 PERCENT EMISSIONS BY ST PARKERS 0.0% 0.0X 0.0X 0.0% 0.0% 0.0X 0,0X 0,0% 0.0% PERCENT EMISSIONS BY IT PARKERS 0.0% 0,0% 0.0X 0.0% 0.0% 0.0% 0.0% 0.0X 0.0X PERCENT EMISSIONS BY LT PARKERS 0,0% 0.0% 100.0% 0.0% 100.0% 100.0X 100.0% 100.0% 100,0X PERCENT TRIPS BY ST PARKERS 0.0% 0.0% 0.0% 0.0X 0.0% 0.0X 0.0X 0.0X 0.0% PERCENT TRIPS 8Y IT PARKERS 0.0% 0.07. 0.0X 0.0% 0.0% 0.0% 0.0% 0.0% 0.0% PERCENT TRIPS BY LT PARKERS 0.0%, 0.0% 100.0% 0.0% 100.0% 100.0% 100.0% 100.0% 100.0% ST EMISSIONS/ST SPACE (gm/space) 0,00 ERR ERR ERR ERR ERR ERR ERR ERR i IT EMISSIONS/IT SPACE (gm/space) 0.00 ERR ERR ERR ERR ERR ERR ERR ERR j LT EMISSIONS/LT SPACE (gm/space) 0.00 0,00 1,44 0.00 E.37 8.31 14.04 6.37 4,57 l '- ADJUSTED STx/STn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA ' ADJUSTED ITx/ITn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA ADJUSTED LTx/LTn EMISS RATE RATIO 4.47 4.45 4.38 4,45 4.47 4,46 4.74 4,35 4.57 X IDLE ADJUSTMENT, ST ENTERING 0,00% 0.00% 0,00% 0,00X 0.00% 0.00% 0.00% 0.00% NA X IDLE ADJUSTMENT, ST EXITING 0.00% 0,00% 0.00X 0.00% 0.00% 0.00% 0.00% 0.00% NA X IDLE ADJUSTMENT, IT ENTERING 0.00% 0,00% 0.00% 0.00% 0,00% 0,00% 0.007, 00,00X NA X IDLE ADJUSTMENT, IT EXITING 0.00% 0.00% 0.00% 0,00X 0,00% 0.00X 0.00% 0.00% NA ' X IDLE ADJUSTMENT, LT ENTERING 0.00% 0.001 -25.36% 0.00% 0,00% 0.00% 0.00% 0.00% -25.36% X IDLE ADJUSTMENT, LT EXITING 0.00X 0.00X 0.00% 0.00% 0.38%. 2.78% 9.36X 0,38% 4.38X X IDLE ADJUSTMENT, TOTAL ENTER 0.00% 0.00% -25,36% 0.00% 0.00% 0.00% 0.00% 0,00% -25.36X - X IDLE ADJUSTMENT, TOTAL EXIT 0,00% 0.00% 0.00% 0.00% 0.38X 2.78% 9.36% 0.38% 4.38% X IDLE ADJUSTMENT, TOTAL 0.00X 0.00% -25.36% 0,00% 0.38% 2.78% 9.36% 0.38% 0.35% ENTERING VEHICLE VMT 0,00 0.00 26.47 0.00 0.00 0.00 0.00 0.00 3,31 26.47 EXITING VEHICLE VMT 0.00 0.00 0.00 0,00 26,63 33,90 53.82 26.63 17.62 140.98 TOTAL VMT INSIDE FACILITY 0.00 0.00 26.47 0.00 26.63 33.90 53.82 26.63 20.93 167,45 l l Table 1-24. hat Hour Cuban Nonoside Concentrations(peel Inside the hoposed II Parting Wrap-Teo Exit Lanes and 40 Percent Net Open Area LEVEL FLOOR PEAR ROM CO SIDES MEAN I LIPENMAN OUTSIDE FLOOR NATURAL NATURAL NATURAL MECHANICAL RECIIANICAL MECHANICAL TOTAL INTERNAL (1 OF AREA EMISSIONS (=NIN0 OPEN EFFECTIVENESS BIND SPEED LENGTH VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION VENTILATION PEAK HOUR SPACES) ISO FT) (GRARS/HRI DIRECTION) AREA FACTOR (MMSEC) (FT) (EICHANVESJHR) (CFM) (CFN/SPACE) (EICIWI6ES/HR) (CFA) (CFM/SPACE) (EICHMUES/HR) CO(PPM) BASEMENTS 0 0 NOR S 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 NA ( 0) E OR B 0.01 1.0 1.0 0 0.0 0 0 0.0 0 0 0.0 NA ALL NA 1.0 1.0 0 NA NA 0 0.0 0 0 M NA GROUND 100,800 6,239 N OR S 40.01 1.0 1.0 320 15.0 302,362 1,209 0.0 0 0 15.0 10.6 ( 250) E OR B 40.0I 1.0 1.0 315 14.8 297,638 1,191 0.0 0 0 14.8 10.8 ALL 40.01 1.0 1.0 318 14.9 299,981 1,200 0.0 0 0 14.9 10.7 LEVEL 2 100,800 3,565 N OR S 40.01 1.0 1.0 320 15.0 251,969 916 0.0 0 0 15.0 7.3 I 275) E ORB 40.0I 1.0 1.0 315 14.8 248,031 902 0.0 0 0 14.8 7.4 ALL 40.01 1.0 1.0 318 14.9 249,934 909 0.0 0 0 14.9 7.3 LEVEL 3 100,800 1,426 N OR S 100.01 1.0 1.0 320 37.5 629,921 2,291 0.0 0 0 37.5 1.2 ( 275 1 E OR B 100.01 1.0 1.0 315 36.9 620,079 2,255 0.0 0 0 36.9 1.2 ALL 100.01 1.0 1.0 318 37.2 624,961 2,273 0.0 0 0 37.2 1.2 , | §EEi ;■■ G,.4 .....,r. } G .| K 2;) 2J 7( .d' J ;2 _ ly . | 41 ' . \j\ ,�, . . | §;- 0„ : 15.= I .'W_ a; : � K}\ ��, , . 1 ■ga 1D } � ° � .� §k� ° °� /\\ /\/ /\\ . Q ! K§§ ;-- ,-- - . i2§§ ., g§ � ,� „� �e� . . If�( ,°° ma§ m§§ mm2 z : 2kk | -- -:-• :.- --- . ' \\ g§` � S� §Q■ •. ... . ■ )@ � --- --- .. b . }\ IZts5 00 ))) ))) 000 a , i if 25 . ;i§ 2q a\e � ° ( _ 41 §B- , \ ) § ACr ; e n 2k a- B} k} §} Table B-26, Carbon Monoxide Impacts From Renton Parking Garage Alternative 81 with Two Exit Lanes.and 40X Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppu) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 10.7 10,3 9,7 8.3 6.8 5.0 3,6 2.2 Level 2 7.3 6.3 6.0 5.3 4,4 3.3 2.4 1.5 Level 3 1.2 0,8 0,8 0.7 0.6 0.5 0.4 0.2 Total 17.4 16.5 14.2 11.8 8.8 6.4 4.0 Mean Dispersion Downwind of Garage 8-Hour Average Carbc,n Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 3.2 3.1 2.9 2.5 2,1 1.5 1,1 0.7 Level 2 2,2 1.9 1,3 1.6 1.3 1.0 0.7 0.5 Level 3 0.4 0.2 00,2 0.2 0.2 0.2 0.1 0.1 Total 5.2 5,0 4.3 3.6 2.7 1,9 1.2 Table B-26. Carbon Monoxide Impacts From Renton Parking Garage Alternative 81 with Two Exit Lanes and 40X Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 10,7 10,3 9,7 8.3 6.8 5.0 3.6 2.2 Level 2 7.3 6.3 6.0 5,3 4.4 3.3 2.4 1.5 Level 3 1.2 0,8 0.8 0.7 0.6 0,5 0.4 0.2 Total 17.4 16.5 14.2 11.8 8.8 6.4 4.0 Mean Dispersion Downwind of Garage B-Hour Average Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 3.2 3.1 2.9 2.5 2.1 1.5 1.1 0.7 Level 2 2.2 1.9 1.8 1.6 1.3 1.0 0.7 0.5 Level 3 0,4 0.2 0.2 0.2 0.2 0.2 0.1 0.1 Total 5.2 5.0 4,3 3.6 2.7 1.9 1.2 Table B-27. Parking Garage Emissions Model Results for Garage Alternative B2 with Two Exit Lanes PARAMETERS SYMBOL HOUR 1 HOUR 2 HOUR 3 HOUR 4 HOUR 5 HOUR 6 HOUR 7 HOUR 8 WTI) MEAN TOTALS INPUT DATA: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE 82 MAX NUMBER OF LEVELS FROM ENTRANCE L 4 4 4 4 4 4 4 4 4 SHORT TERM (ST) SPACES Ps 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM (IT) SPACES Pi 0 0 0 0 0 0 0 0 0 LONG TERM (LT) SPACES P1 800 800 800 800 800 800 800 800 800 GROSS SQUARE FEET PER SPACE B 390.0 390.0 390.0 390.0 390.0 390.0 390.0 390.0 390.0 NUMBER OF EXIT LANES Nx 2 2 2 2 2 2 2 2 2.0 ST ENTERING TRIPS per 100 ST SPACES Ysn 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 ST EXITING TRIPS per 100 ST SPACES Ysx 0.0 0.0 0.0 0.0 0,0 0.0 0.0 0.0 0.0 IT ENTERING TRIPS per 100 IT SPACES Yin 0.0 0,0 0.0 0.0 0.0 0.0 0,0 0.0 0.0 IT EXITING TRIPS per 100 IT SPACES Yix 0.0 0.0 0.0 0,0 0.0 0.0 0.0 0.0 0.0 LT ENTERING TRIPS per 100 LT SPACES Yln 0,0 0.0 15,4 0,0 0.0 0.0 0.0 0.0 1.9 LT EXITING TRIPS per 100 LT SPACES Ylx 0,0 0,0 0.0 0.0 19,5 25,4 35.6 19.5 12.5 INITIAL DIST COEFFIC., ENTERING Fn 0.210 0,210 0.210 0.210 0.210 0,210 0,210 0,210 0.210 INITIAL DIST COEFFIC., EXITING Fx 0.210 0.210 0.210 0.210 0.210 0.210 0,210 0.210 0.210 EXTRA TRAVEL X, ENTERING VEHICLES Un 25 20 20 20 20 0 0 0 20.0 EXTRA TRAVEL X, EXITING VEHICLES Ux 0 0 0 0 0 0 0 0 0.0 ENGINE WARM-UP TIME (seconds/veh) Jx 10.0 10.0 10,0 10.0 10.0 10,0 10.0 10.0 10,0 IDLING AT ENTRANCE (sec/veh) Zn 3.0 3,0 3,0 3.0 3.0 3.0 3,0 3,0 3.0 IDLING AT EXIT POINT (sec/veh) Zx 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 16.0 X VEHICLES WITH CATALYST C 86.97 86.97 86.97 86.97 86.97 86.97 96.97 86.97 86.97 X CAT COLD START, ST ENTERING PCCCsn 0.0 18,9 18.9 18.9 18,9 18.9 18.9 18.9 NA X CAT COLD START, IT ENTERING PCCCin 0.0 16.9 16.9 16.9 16.9 16,9 16.9 16.9 NA X CAT COLD START, LT ENTERING PCCC1n 15,3 15.2 15.2 15.2 15.2 15.2 15.2 15,2 15.2 X NONCAT COLD START, ST ENTERING PCCNsn 0.0 11.7 11,7 11,7 11.7 11.7 11.1 11.7 NA % NONCAT COLD START, IT ENTERING PCCNin 0.0 11,8 11.8 11.8 11.8 11.8 11.8 11,8 NA X NONCAT COLD START, LT ENTERING PC,CCNIn 11.9 11,4 11.4 11.4 11,4 11.4 11.4 11.4 11.4 AVERAGE VEHICLE SPEED, 1-20 mph S 7 7 7 7 7 7 7 7 7 HOT IDLE RATE (grams/minute) Ih 3.4400 3.4400 3,4400 3.4400 3,4400 3.4400 3.4400 3,4400 3.4400 100X COLD RATE @ 5 MPH (gm/mile) Ec 258.98 258.98 258.98 258.98 258.98 258.98 258.98 258.98 258.98 ST ENTERING RATE, (grams/mile) Esn 0.00 0.00 0,00 0,00 0.00 0.00 0.00 0,00 NA ST EXITING RATE, (grams/mile) Esx 0.00 0.00 0.00 0.00 0.00 0.00 0,00 0,00 NA IT ENTERING RATE, (grams/mile) Ein 0,00 0.00 0.00 0,00 0.00 0.00 0.00 0.00 NA IT EXITING RATE, (grams/mile) Eix 0.00 0.00 0.00 0.00 0.00 0.00 0,00 0,00 NA LT ENTERING RATE, (grams/mile) Eln 58.36 58.36 58.36 58.36 58.36 58.36 58.36 58.36 58.36 LT EXITING RATE, (grams/mile) E1x 190.80 190,80 190.80 190.80 190,80 190.80 190.80 190.80 190,80 MODEL OUTPUT: RENTON FIRST CITY PARKING GARAGE ALTERNATIVE 32 TOTAL SPACES P 800 B00 800 B00 800 800 BOO 800 800 GROSS PARKING AREA (square feet) A 312,000 312,000 312,000 312,000 312,000 312,000 312,000 312,000 312,000 EXIT DEMAND, SHORT TERM Vdsx 0 0 0 0 0 0 0 0 0 , 0 EXIT DEMAND, INTERMEDIATE TERM Vdix 0 0 0 0 0 0 0 0 0 0 EXIT DEMAND, LONG TERM Vdlx 0 0 0 0 156 203 285 156 100 800 TOTAL EXIT DEMAND Vdjx 0 0 0 0 156 203 285 156 100 800 TOTAL EXIT CAPACITY Xc 371 371 371 371 371 371 371 371 371 MEAN EXIT QUEUE (vehicles/lane) Xq 0.0 0.0 0.0 0.0 0.4 0.5 0.8 0.4 0.3 ST EXIT CARRY-OVER (vehicles) Vqs 0 0 0 0 0 0 0 0 0,0 ' IT EXIT CARRY-OVER (vehicles) Vqi 0 0 0 0 0 0 0 0 0.0 LT EXIT CARRY-OVER (vehicles) Vql 0 0 0 0 0 0 0 0 0.0 ,, TOTAL EXIT CARRY-OVER (vehicles) Vq 0 0 0 0 0 0 0 0 0,0 SHORT TERM ENTERING TRIPS Vsn 0 0 0 0 0 0 0 0 0 , 0 SHORT TERM EXITING TRIPS Vsx 0 0 0 0 0 0 0 0 0 ' 0 INTERMEDIATE TERM ENTERING TRIPS Vin 0 0 0 0 0 0 0 0 0 0 INTERMEDIATE TERM EXITING TRIPS Vix 0 0 0 0 0 0 0 0 0 , 0 LONG TERM ENTERING TRIPS inn 0 0 123 0 0 0 0 0 15 123 LONG TERM EXITING TRIPS ','lx 0 0 0 0 156 203 285 156 100 800 TOTAL ENTERING TRIPS Vjn 0 0 123 0 0 0 0 0 15 123 TOTAL EXITING TRIPS Vjx 0 0 0 0 156 203 285 156 100 800 TOTAL TRIPS Vjz 0 0 123 0 156 203 285 156 115 923 FINAL DIST COEFFICIENT, ENTERING Gn 1,840 1.840 1,840 1.840 1.840 1.840 1,840 1.840 1.840 FINAL DIST COEFFICIENT, EXITING Gx 1.840 1.840 1.840 1.840 1.840 1.840 1.840 1.840 1,840 MEAN TRAVEL PATH (feet/vehicle) D NA NA 1,028 NA 1,028 1,028 1,028 1,028 NA ENTERING VEHICLE TRAVEL (ft/veh) On 1,305 1,253 1,253 1,253 1,253 1,048 1,048 1,048 1,253 ' EXITING VEHICLE TRAVEL (ft/veh) Dx 1,048 1,048 1,048 1,048 1,048 1,048 1,048 1,048 1,048 MAXIMUM ENTER IDLE TIME (sec/veh) Mn 15 15 17 15 15 15 15 15 17.5 MINIMUM EXIT IDLE TIME (sec/veh) 1x 30 30 30 30 40 43 48 40 43,5 MOBILE/EMFAC IDLE TIME FRACTION H 0,4067 0,4067 0.4067 0.4067 0.4067 0.4067 0.4067 0,4067 0.4067 IDLE TIME COEFFICIENT (sec/ft) R 0,0396 0.0396 0.0396 0.0396 0.0396 0,0396 0.0396 0,0396 0,0396 1 MOBILE/EMFAC ENTER IDLE SECONDS Tn 52 50 50 50 50 42 42 42 49,7 MOBILE/EMFAC EXIT IDLE SECONDS Tx 42 42 42 42 42 42 42 42 41.5 MEAN EXIT TIME (seconds/vehicle) Xt 0 0 0 0 102 103 109 102 105 X CAT COLD START, ST EXITING PCCCsx 0.0 18.9 18,9 18,9 18.9 18,9 18.9 18,9 NA X CAT COLD START, IT EXITING PCCCix 100.0 100.0 100,0 100.0 100,0 100.0 100.0 100,0 NA X CAT COLD START, LT EXITING PCCCIx 100.0 100.0 100,0 100.0 100,0 100.0 100.0 100.0 100,0 X NONCAT COLD START, ST EXITING PCCNsx 0,0 11.7 11,7 11.7 11.7 11.7 11.7 11,7 NA X NONCAT COLD START, IT EXITING PCCNix 0.0 11.8 11,8 11.8 11.8 11.8 11.8 11,8 NA X NONCAT COLD START, LT EXITING PCCNIx 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 ' X COLD STARTS, ST ENTERING TRIPS Wsn 0.0 18.0 18,0 18.0 18,0 18,0 18.0 18,0 NA X COLD STARTS, ST EXITING TRIPS Wsx 0.0 18,0 18.0 18.0 18.0 18,0 18.0 18,0 NA ' X COLD STARTS, IT ENTERING TRIPS Win 0,0 16.3 16.3 16.3 16.3 16.3 16.3 16.3 NA X COLD STARTS, IT EXITING TRIPS Wix 87,0 88.5 88,5 88.5 88,5 88.5 88.5 88,5 NA X COLD STARTS, LT ENTERING TRIPS Win 14,9 14.7 14,7 14.7 14.7 14,7 14.7 14,7 14.7 , - X COLD STARTS, LT EXITING TRIPS Wlx 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100X COLD IDLE RATE (go/min) lc 21.582 21.582 21.582 21.582 21.582 21.582 21,582 21,582 21.582 COLD/HOT IDLE (gm/min), ST ENTER Inn 3,440 6.702 6,702 6.702 6.702 6.702 6.702 6.702 NA COLD/HOT IDLE (ga/ain), ST EXIT Isx 3.440 6.702 6,702 6.702 6.702 6.702 6,702 6,702 NA COLD/HOT IDLE (ga/ain), IT ENTER Iin 3,440 6.390 6,390 6.390 6.390 6.390 6.390 6.390 NA COLD/HOT IDLE (gm/min), IT EXIT lix 19.218 19.497 19,497 19,497 19,497 19,497 19.497 19,497 NA COLD/HOT IDLE (gm/min), LT ENTER Iln 6,140 6,103 6.103 6.103 6.103 6.103 6.103 6,103 6,103 COLD/HOT IDLE (ga/ain), LT EXIT Ilx 21,582 21.582 21,582 21.582 21.582 21.582 21.582 21,582 21.582 -- IDLE ADJUSTMENT (gm/v), ST ENTER Ksn -2.10 -3.87 -3,60 -3.87 -3.87 -2.96 -2.96 -2.96 NA IDLE ADJUSTMENT (gm/v), ST EXIT Ksx 0.00 0.00 0.00 0.00 0.00 0.15 0,73 0.00 NA ' IDLE ADJUSTMENT (gm/v), IT ENTER Kin -2.10 -3.69 -3,43 -3.69 -3.69 -2.82 -2,82 -2.82 NA IDLE ADJUSTMENT (gm/v), IT EXIT Kix 0,00 0.00 0,00 0.00 0,00 0.42 2.11 0,00 NA IDLE ADJUSTMENT (gm/v), LT ENTER Kin -3,75 -3,52 -3,27 -3.52 -3.52 -2.70 -2.70 -2.70 -3.27 IDLE ADJUSTMENT (gm/v), LT EXIT Klx 0.00 0.00 0.00 0.00 0,00 0.47 2.34 0.00 0,95 ST ENTERING EMISSIONS (grams) Qsn 0 0 0 0 0 0 0 0 0 0 ST EXITING EMISSIONS (grams) Osx 0 0 0 0 0 0 0 0 0 0 IT ENTERING EMISSIONS (grams) gin 0 0 0 0 0 0 0 0 0 0 IT EXITING EMISSIONS (grams) Qix 0 0 0 0 0 0 0 0 0 0 LT ENTERING EMISSIONS (grams) Qln 0 0 1,305 0 0 0 0 0 163 1,305 LT EXITING EMISSIONS (grams) glx 0 0 0 0 5,903 7,782 11,464 5,903 3,881 31,052 ST PARKING EMISSIONS (grams) gsz 0 0 0 0 0 0 0 0 0 0 IT PARKING EMISSIONS (grams) Qiz 0 0 0 0 0 0 0 0 0 0 LT PARKING EMISSIONS (grams) Qlz 0 0 1,305 0 5,903 7,782 11,464 5,903 4,045 32,357 ENTERING VEHICLE EMISSIONS (gm) Qjn 0 0 1,305 0 0 0 0 0 163 1,305 EXITING VEHICLE EMISSIONS (gm) Qjx 0 0 0 0 5,903 7,782 11,464 5,903 3,881 31,052 TOTAL EMISSIONS (grams) Qjz 0 0 1,305 0 5,903 7,782 11,464 5,903 4,045 32,357 TOTAL EMISSIONS (pounds) Qjz 0.0 0.0 2.9 0.0 13.0 17,2 25,3 13.0 8,9 71.3 PERCENT EMISSIONS BY ST PARKERS 0.0X 0.0X 0.0X 0.0X 0.0% 0,0X 0.07, 0.0X 0,0X PERCENT EMISSIONS BY IT PARKERS 0,0X 0.0% 0.0X 0.0X 0.0% 0.0% 0.0X 0.0X 0.0X PERCENT EMISSIONS BY LT PARKERS 0,07, 0.0% 100,0% 0,0% 100.0% 100.07, 100,07. 100.0% 100.0X PERCENT TRIPS BY ST PARKERS 0,0% 0,0X 0,0X 0.0% 0.0X 0,0X 0,0% 0.0% 0.0% PERCENT TRIPS BY IT PARKERS 0.0% 0.0X 0.0X 0,0% 0.0% 0.0% 0.0% 0,0% 0,0X PERCENT TRIPS BY LT PARKERS 0.0% 0.0X 100.0% 0.0% 100.0X 100,0X 100.0X 100.0% 100.0% ST EMISSIONS/ST SPACE (gm/space) 0,00 ERR ERR ERR ERR ERR ERR ERR ERR IT EMISSIONS/IT SPACE (gm/space) 0,00 ERR ERR ERR ERR ERR ERR ERR ERR LT EMISSIONS/LT SPACE (gm/space) 0.00 0,00 1,63 0.00 7,38 9.73 14.33 7,38 5,06 ADJUSTED STx/STn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA ADJUSTED ITx/ITn EMISS RATE RATIO NA NA NA NA NA NA NA NA NA ADJUSTED LTx/LTn EMISS RATE RATIO 4.42 4.39 4.28 4,39 4.39 4.31 4,52 4.26 4,39 X IDLE ADJUSTMENT, ST ENTERING 0,00% 0.007. 0.00% 0.00% 0.00% 0,00X 0,00% 0,00% NA X IDLE ADJUSTMENT, ST EXITING 0.00X 0.00% 0.00X 0.00% 0.00X 0.00X 0.00X 0.00X NA X IDLE ADJUSTMENT, IT ENTERING 0,00% 0,007, 0.00% 0.00% 0,00X 0.00% 0.00% 0.00X NA X IDLE ADJUSTMENT, IT EXITING 0.00% 0.00% 0,00% 0.00% 0.00% 0.00% 0,00X 0.00X NA X IDLE ADJUSTMENT, LT ENTERING 0,00% 0.00X -23,637, 0.00% 0.00% 0.00% 0,00% 0,007. -23,637. X IDLE ADJUSTMENT, LT EXITING 0.00X 0.00X 0.00% 0.00% 0.00X 1.24% 6,17% 0,00X 2,51X X IDLE ADJUSTMENT, TOTAL ENTER 0.00X 0,007. -23,63% 0.00X 0.007. 0.00% 0,007, 0,00% -23,63X X IDLE ADJUSTMENT, TOTAL EXIT 0.00% 0.00X 0.00X 0.00% 0.00X 1,24X 6.17X 0.00% 2,51% X IDLE ADJUSTMENT, TOTAL 0.00% 0.00% -23,63% 0,00% 0.00X 1.24X 6.17% 0.00% -0,98% ENTERING VEHICLE VMT 0.00 0.00 29.29 0.00 0.00 0.00 0.00 0.00 3,66 29,29 EXITING VEHICLE VMT 0.00 0,00 0.00 0,00 30.94 40.29 56,59 30,94 19.84 158.75 TOTAL VMT INSIDE FACILITY 0.00 0.00 29.29 0.00 30.94 40.29 56.59 30,94 23.51 188.04 Table 1-21. feat Ion Carbon lososlde Coaceatldlou (ppa) tulle the Propesdd 12 Partly Garage-TV,Islt Lases ail 41 Paced let Opea Ilea LIRL IL00t PILE 1001 CO mu 11111 1 DR111G O0TSI01 root MOIL 111011E ILTOIIL NUCIl1ICIL IEC801IC►L OC111IC1L TOOL WOOL (1 or /1I1 111SS101S (=IIID OPO Or1CTIV11165 VIID SPEOO L1101 VUITILAT101 VEITIL1TIOl VOTILOTI01 VIISILAT101 VUTILITIOI 11111111101 VIITILITIO1 P1►1 1001 SPOCOSI (SO fT) (Gl1S/11)DI11CT101) /Ill riCT01 (1/SICI ((Tl I11CI1101S/it) (CIV) (CFN/SPLC11 (ISCIIJGIS/t11 (CON) (CEN/SPICo) MCl//COS/11) CO ION) 11s11SITs 1 1 1 01 S 1.11 1.0 (.0 1 1.1 1 1 1.0 1 1 1.1 11 ( 0) E OR I 0.01 1.0 1.0 0 0.0 0 0 0.0 0 o 0.0 IA ALL NA 1.0 1.0 0 NA NA 0 0.0 0 0 SA NA 600000 78,000 5,211 N OR S 40.01 1.0 1.0 390 23.6 268,504 1,929 0.0 0 0 23.6 7.3 ( 191 I E OR I 40.01 1.0 1.0 200 12.1 188,176 989 0.0 0 0 12.1 14.2 ALL 40.01 1.0 1.0 295 16.0 249,833 1,308 0.0 0 0 (6.0 10.7 LEVEL 2 78,000 3,474 NOR S 40.01 1.0 1.0 310 23.6 307,087 1,513 0.0 0 0 23.6 5.0 ( 203) E OR 0 40.0I 1.0 1.0 200 12.1 157,480 776 0.0 0 0 12.1 11.3 ALL 40.01 1.0 1.0 295 16.0 208,114 1,026 0.0 0 0 16.0 8.6 LEVEL 3 78,000 1,985 N OR 5 40.0I 1.0 1.0 390 23.6 307,081 1,513 0.0 0 0 23.6 3.3 ( 203 I E OR R 40.01 1.0 1.0 200 12.1 157,480 776 0.0 0 0 12.1 6.5 ALL 40.01 1.0 1.0 295 16.0 208,194 1,026 0.0 0 0 16.0 4.9 LEVEL 4 78,000 794 1 DR S 100.01 1.0 1.0 390 59.1 767,117 3,782 0.0 0 0 59.1 0.5 ( 203) E 00 R 100.01 1.0 1.0 200 30.3 393,701 1,929 0.0 0 0 30.3 1.0 ALL 100.01 1.0 1.0 295 40.0 520,486 2,564 0.0 0 0 40.0 0.8 �§ :§ ;§ /§ �§ § § �- �. �® , M E� � . \§§ �f &§i 2k 1.4 s ■ a §■; aF '__. m=� rCU p.212 paw ■C� k . �f .. =. 9§■ EE - -. !E e§. o-- oe.--- --e so. C ! .( - ...., e EE rrc crc rrc rrc Bel I2 le / \\ Ce0@M E OE /' §2« §a; §2m §K■ � fB§ | _ I §§, | .�22e . 322 § E ,:c §§k � | Q ©§m §em §p§ @■m .E& : ��\ $�k $,k k}. ,e 0 2§§ � r. kk© | {% )»k §_G �§k n§2 _e_ -_P PPP PPP /\k§ � 2/ -El - 2§2 � %-I ' !I;£ E�2 [E[ EE2 ,cc' ! E:2 eEE ECG 6Ec ■OM I -2 • : ( \j / 1 i ' Table 8-30. Carbon Monoxide Impacts From Renton Parking Garage Alternative 1 B2 with Two Exit Lanes and 40% Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 10.7 10.3 9,8 8.3 6.8 5.0 3.6 2.2 Level 2 8.6 7.4 7.0 6.2 5.2 3.9 2.8 1.8 Level 3 4.9 3.3 3.2 3.0 2.7 2.1 1.6 1.0 Level 4 0.8 0.4 0.4 0.4 0.3 0.3 0.2 0.2 Total 21.4 20.4 17.8 15.0 11.3 8.2 5.2 Mean Dispersion Downwind of Garage 8-Hour Average Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 3.8 3.6 3.4 2.9 2.4 1.8 1.3 0.8 Level 2 3.0 2.6 2.5 2.2 1.8 1.4 1.0 0.6 Level 3 1.7 1.2 1.1 1.1 0.9 0.7 0.6 0.4 Level 4 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Total 7.5 7.2 6.3 5.3 4.0 2,9 1.8 7f% „■ Si. _�� ,_. , E.§e � - §§ I vv■ 0 r4 8 2\ ; » ; .▪ § | `° API � ks§ 000 2§IN , s-- jj« 000 000 . §§'- � °B \§K � :0:: :5: ::: 5)) 888 2§§ ®:g ,\§ CO PI 60 — B2@ -- ��- �_- =a &q /§E ° ` wr.- - - - - S2` §/2 &m§ G§§ ±§§ ■ §(K ::` 2;Agi) VP Ca ;m_ ■/§ � 111 -10... °°° §me 50� mm§ /m2 ek� l §[§ � _ : --- 2 •2 2 2) 0§• ` ! ]£ §Q■ i =_ __. .._ _ . . . . . . . . . . . . . ; . v -▪ : [* f �7 § §l �§§ !0 0••• CFS Pal, 00 \; ' . M §e0 000 §0w 02o ) § 30; k )( �!1 � \ �� ��} NZ. .41. � ;\� Eii � 161 111. ]\• � � ! ° , / £ � i - - 7• i §�B )© §� /§ 2; s )I i _ 2- §. §- §� ( n N _N N e _.� o n e m 41 4an eee eee eoe oeo oeo 3 = eee eee eoe eee oee �� ( eoe eee eee eee 0ee LaLa R1 eeo FAI 5., 8oe g0 zaLo o Z eoe - -. ...I Sr eoIC e Co La 0 Iva eee e O e O IC { 8e5 LOP . 11 U ( g --- La Le " i eoe rrr 000 000 _a z �a ICW = Wre a a- IC La IC III Sod a : it CC La 1 <� v e 8 C 8 8 8 8 • j ! Table B-33, Carbon Monoxide Impacts from the Renton Parking Garage Alternative 82 with Two Exit Lanes and 55X Net Open Area Mean Dispersion Downwind of Garage Peak Hour Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 7.8 7.5 7.1 6.0 5.0 3.7 2.6 1.6 Level 2 6.2 5.4 5.1 4.5 3.8 2.8 2.1 1.3 Level 3 3.6 2.4 2.4 2.2 1.9 1.5 1.1 0.7 Level 4 0.8 0.4 0.4 0.4 0.3 0.3 0.2 0.2 Level 5 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Level 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Level 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Level B 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total 15.7 15.0 13.1 11.0 8.3 6.1 3.8 Mean Dispersion Downwind of Garage 8-Hour Average Carbon Monoxide Increments (ppm) at Various Garage Distances (Feet) From the Garage Footprint Level Inside 10 25 75 150 300 500 1000 Level 1 2.8 2.6 2.5 2.1 1.7 1,3 0.9 0,6 Level 2 2.2 1.9 1.8 1.6 1.3 1.0 0.7 0.5 Level 3 1.3 0.8 0.8 0.8 0.7 0,5 0.4 0,3 Level 4 0.3 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Level 5 0,0 0.0 0.0 0.0 0,0 0.0 0.0 0.0 Level 6 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Level 7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Level 8 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 Total 5.5 5.3 4.6 3.9 2.9 2.1 1.3 ' -I BEGINNING OF FILE FILE TITLE ,g4 � s '... 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' ' ''' ':l'r• tf, . . ) :.' `::: -1. tf.f • . • . . ,'- : .• , .. ) . /11 All, JUSTIFICATION OF VARIANCE FOR CUL-DE-SAC LENGTH The Blackriver Technology Park is located on a distinctly shaped parcel of: land. The arc shaped northern boundary is formed by the Burlington Northern Railroad right-of-way. More than half of the southern boundry is formed by the P-1 Channel , City of Renton buffer property, and preserve areas. Therefore, the only unencumbered border of the site is the southerly portion that extends east-west between Powell Avenue and Natches Avenue. To aid circulation and promote effi ci ent`,access, Blackriver Technology -Park proposes to link Powell and Natches Avenues. : However. , in order to service lots in the "bound in" western portion of the site, it is necessary"`tp prvide a cul-de-sac. lr The cul-de-sac shall extend 2500' beyond the "T" intersection of Natches and The applicant for Blackriver Technology Parlor (Alterra Crporation), would ''. suffer undue hardship if a loop road were providedtto :the western portion of the site. Currently over 11% of the developable land will be given over . roadway right-of-way. If a loop road were provided approximately 20% of the developable . area would be roadway right-of-way. • •q ,. : The applicant also would suffer undue hardship as well as the City of Renton n - if a 'connection' to Monster Road were proposed. The roadway would impact and disturb City of Renton green-belt, buffer and preserve areas. The property i-.s° less-'` than 40' wide and could not support .a 44' wide road with a 60' right-of-way adjacent to Monster Road. Impacts would also be caused by t e alignment of. the Burlington Northern track, signals and control boxes.' , As noted above, the variance is necessary because of the speci1zcircumstances of developable land size, shape, the location of adjacent properties, i.e. P-1 Channel and Burlington Northern Railroad. The high percent* of area necessary to provide a connection deprives the applicant of development rights ,and privileges enjoyed by other property owner's in the vicinity. The granting of a variance to allow a 2500' cul-de-sac will not be materially detrimental to the public welfare, nor will it cause injury to property or improvements in the vicinity. To the contrary, the applicant will provide utilities in the developable area and beyond to provide service connections for future use to the north and west. The applicant will also provide all the cul-de-sac improvements per city codes and regulations, at no cost or harm to the public. The applicant is not asking for a variance that would constitute a special privilege that is inconsistent with other properties of similar size and/or shape located within the vicinity. . The need for variance is directly related to the geographical constraints of. the Railroad, P-1 Channel and Greenbelt, Buffer and City of Renton properties. The 111111 applicant is " providing access to the developable parcels of the site, which does not constitute a special privilege. . Due to the desire of the applicant to efficiently provide parcels of land of approximately three-quarters of an acre in size and to be in compliance with the cities sub division code, a cul-de-sac of 2500' in length is necessary. A cul-de-sac of lesser length or a loop road would cause undue hardship on the applicant by reducing the parcels to a size of undevelopable proportions. The parcel sizes currently proposed are developable within the current zoning and proposed land usage. The applicant feels the above statements provide ample background and justification to warrant a variance of the cul-de-sac length to provide that be extended to 2500' An length. l � LEGAL DESCRIPTION LEGAL DESCRIPTIONS PARCEL. A That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M., in King County, Washington; and That portion of Junction Addition to City of Seattle, according to p1at.recorded in Volume 12 of Plats, page 75, in King County, Washington, together with vacated streets adjoining which would attach to said premises by operation of law, and of C.E. Brownell's Donation Claim No. 41, described as follows: Beginning at the south quarter corner of said Section 13; thence N00'58'28"E along the north-south centerline thereof 1092.82 feet; thence N68'03'54"E 224.45 feet; thence N80'04'48"E 232.00 feet; thence 542'06'08"E 87.16 feet to the TRUE POINT OF BEGINNING;' thence N42'06'08"W 87.16 feet; thence S80'04'48"W 232.00 feet; thence 1412'01'00N 40.75 feet; thence S2r 59'OO"W 133.01 feet to a point of curve; thence along a curve to the right having a radius of 230.00 feet, through a central angle of 27'47'31" an arc distance of 111.56 feet to a point of compound curvature; the center of said curve bears N15'46'31"E 160.00 feet; thence along said curve to the right, through a central angle of 70'48'19" an arc distance of 197.73 feet; thence S82'15'00"W 67.68 feet; thence 531'32'22"W 71.06 feet; thence N81'11'35"W 193.00 feet; thence S82'15'00"W 92.99 feet; thence S35'29'30"W 143.18 feet; thence N74'44'00"W 84.85 feet; thence S60'16'00"W 67.00 feet; thence S12'16'00"E 97.35 feet to the north line of a tract of land described in EXHIBIT 5 to Agreement recorded under King County Recording No. 8301050539; thence 568'06'46'11 along said northerly line 375.53 feet to the northerly line of a tract of land described in EXHIBIT 8 In said Agreement; thence northwesterly along said .northerly line on a curve to the left, the center which bears west 195.01 feet, thru a central angle of 78'41'24", an arc distance of 267.83 feet; thence N78'41 '24"W along said northerly line 180.00 feet to an angle point in said northerly line; thence N33'00'54"W along said northerly line 109.47 feet to the south line of the Burlington Northern Railroad Right-of-Way, said point being a point on a curve, the center which bears 539'23'00"E 1853.00 feet; thence easterly along said southerly line and curve to the right, thru a central angle of 2'01'59", an arc distance of 65.75 feet to a point of compound cure; thence continuing along said south Tine on a curve to the right the center of which bears 537'21'O1"E having a radius of 10543.00 feet, an arc distance of 186.51 feet through a central angle of 01'00'49" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears S36'20'12"E having a radius of 1657.00 feet an arc distance of 193.93 feet through a central angle of 06'42'20" ' to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears 529'37'52"E having a radius of 6738.00 feet, an arc distance of 197.76 feet through a central angle of 01'40'54" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears 527'56'58"E having a radius of 1768.00 feet, an arc distance of 194.45 feet through a central angle of 06'18'06" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears S21'38'52"E having a radius of 8603.00 feet, an arc distance of 204.54 feet through a central angle of 01'21'44" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears 520'17'08"E having a radius of 1922.10 feet, an arc distance of 178.79 feet through a central angle of 05'19'46" to a point of compound curve on the east line of said Charles Brownell Donation Land Claim No. 41; thence continuing along said south line on a curve to the right, the center of which bears S14'57'22"E having a radius of 2814.93 feet, an arc distance of 659.42 feet through a central angle of 13'25'19" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears SO1'32'03"E having a radius of 1165.09 feet, thru a central angle of 37'39'19", an arc distance of 765.71 feet to a point which bears N41'28'10"E from the TRUE POINT OF BEGINNING; thence 536'19'35"W 188.63 feet to a point on a curve, the center which bears 536'19'35"W 967.46 feet; thence northwesterly along said curve to the left, thru a central angle of 4'39'32", an arc distance of 78.67 feet; thence 538'54'22'V 451.74 feet to a point on a curve, the center which bears 543°36'23"W 170.00 feet; thence southeasterly along said curve to the right, thru a.central angle of 3'08'37", an arc distance of 9.33 feet; thence 543'15'00"E 20.74 feet; thence . S27'21 '32"W 44.74 feet to the TRUE POINT OF BEGINNING. rP rt'_i L. O- I That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M. in King County, Washington, of Junction Addition to the City of Seattle, according to the plat recorded in Volume 12 of Plats, page 75, records of said King County, and of C.E. Brownell's Donation Claim No. 41, described as follows: Beginning at the south quarter corner of said Section 13; thence N00°58'28"E along the north-south centerline thereof 1092.82 feet; thence 568'03'54"W 351.11 feet to the TRUE POINT OF BEGINNING; thence N68'03'54"E 575.56 feet; thence N12°O1'00"W • 40.75 feet; thence S77•59'O0"W 133.01 feet to a point of curve; thence along a curve to the right having a radius of 230.00 feet, through a central angle of 27'47'31" an arc distance of'111.56 feet to a point of compound curvature; the center of said curve bears N15'46'31"E 160.00 feet; thence along said curve to the right, through a central angle of 70'48'19" an arc distance of 197.73 feet; thence S82'15'00"W 67.68 feet; thence 531'32'22"W 71.06 feet; thence N81'11'35"W 193.00 feet; thence S82'15'00"V 92.99 feet; thence S35'29'30"W 143.18 feet; thence N74'44'00"W 84.85 feet; thence S60'16'00"W 67:00 feet; thence S12'16'00"E 97.35 feet; thence N68'06'46"E 53.79 feet to a point which bears N72'04'341W from the TRUE POINT OF BEGINNING; thence 572'04'34"E 389.92 feet to the TRUE POINT OF BEGINNING. PARCEL 8-2 That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M. in King County, Washington and of Junction Addition to the City of Seattle, according to plat recorded In Volume 12 of Plats, page 75, records of said King County, and of C.E. Brownell's Donation Claim No. 41 described as follows: • Beginning at the south quarter corner of said Section 13; thence NOO'58'28"E along the north-south centerline thereof 1092.82 feet.; thence N68'03'54"E 224.45 feet to the TRUE POINT OF BEGINNING; thence 568'03'54'W 575.56 feet; thence N72.04'34'W 389.92 feet; thence 568.06'46'W 429.32 feet; thence south 85.47 feet to a point of curve; thence on a curve to the left, having a •radius of 60.00 feet, •thru a central angle of 126'52'10", an arc distance of 132.86 feet; thence N53'07'50"E 199.18 feet to a point of curve; thence on a curve to the right, having a radius of 200.00 feet thru a central angle of 53'59'30", an arc distance of 188.47 feet; thence 572'52'40"E 290.00 feet to a point of curve; thence on a curve to the left, having a radius of 197.00 feet, thru a central angle of 39'08'51", •an arc distance of 134.60 feet; thence N67'58'29"E 380.92 feet; thence N31'27'12"E 204.86 feet to the TRUE POINT OF BEGINNING. • PARCEL 8-3 That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M. in King County, Washington; and of Junction Addition to the City of Seattle, according to the plat recorded in Volume 12 of Plats, page 75, records of said King County, together with vacated streets adjoining which would attach to said premises by opera- tion of Law; and of C.E. Brownell's Donation Claim No. 41, and of Tracts 25 and 26, Renton Shore lands 2nd Supplemental Maps 1958, described as follows: Beginning at the south quarter corner of said Section 13; thence N00'58'28"E along the north-south centerline thereof 1092.82 feet; thence N68'03'54"E 224.45 feet to a point hereinafter called "Point A"; thence S68'03'54"W 575.56 feet; thence N72'04'34'W 389.92 feet; thence 568'06'46"W 429.32 feet to the TRUE POINT OF BEGINNING; thence south 85.47 feet to a point of curve; thence on a curve to the left, having a radius of 60.00 feat, thru a central angle of 126'52'10", an arc distance of 132.86 feet; thence N53.07'50"E 199.18 feet to a point of curve; thence on a curve to the right, . having a radius'of 200.00 feet thru a central angle of 53'59'30", an arc distance of 188.47 feet; thence S72'52'40"E 290.00 feet to a point of curve; thence on a curve to the left having a radius of ;97.00 feet, thru a central angle of 39'08'51", an arc distance of 134.60 feet; thence N67'58'29"E 380.92 feet; thence N31'27'12"E 204.86 feet to aforenentioned "Point A"; thence N80'04'48"E 232.00 feet; thence 542'06'08"E 215.00 feet; thence S31'14'05'W 358.99 feet; thence 547'10'01"E 71.34 feet; thence east 114.27 feet; thence south 68.91 feet to the southerly line of said Tract 25; thence along the southerlyy line of said Tracts 25 and 26, the following courses and distances: N88.15'OO'W 180..65 feet; N33°07'25'W 154.51 feet; N27.21'32"E 387.32 feet; N83.17'25'W 171.17 feet; S46'22'22'W 324.66 feet; 572°37'52"W 458.93 feet; N70'54'02'W 354.53 feet; 573'56'01'W 130.08 feet; and 541.16'07"W 316.18 feet to the north boundary of a tract of land deeded to King County and described under King County Receiving Number 6607786; thence wester>•y along said north boundary on a curve to the left, the center which bears 5391'41'39"W 627.46 feet thru a central angle of 39'41'39", an arc distance of 434.70 feet; thence north along said north boundary 25.00 feet; thence west along said north boundary 245.69 feet; thence north 156.13 feet; thence N50'39'19"E 330.21 feet; thence 578'41 '24"E 180.00 feet to a point of curve; thence on a curve to the right, having a radius of 195.01 feet, thru a central angle of 78'41!24", an arc distance of 267.83 feet to the TRUE POINT OF BEGINNING. PARCEL • E3-4 That portion of the southwest quarter of Section 13, Township 23 North, Range 4 East, W.M. in King County, Washington and that portion of Junction Addition to City of Seattle, according to plat recorded In Volume 12 of Plats, page 75, records of said King County. together with vacated streets adjoining which would attach to said premises by operation of law, and of C.E. Brownell's Donation Clai■ No. 41, described as follows: • • Beginning at the south quarter corner of said Section 13; thence N00'58'28"E along the north-south centerline thereof 884•.84 feet to the southeast corner of Tract 26, Renton Shorelands Second Supplemental Maps 1958; thence S72'37'52"W 382.60 feet to an angle point in the south line of said' Tract.26; thence N70'58'02"W 354.53 feet to an angle point in the south line of said Tract 26; thence S73.656'01'1i 130.08 feet to an angle point In the south line of said Tract 26; thence 541'16'07"W along the south line of said Tract 26 a distance of 316.18 feat to the north boundary of a tract of land deeded to King County and described under King County Recording Number 6607786; thence westerly along said north boundary on a curve to the left, the center which bears 539.41'39"W 627.46 feet. thru a central angle of 39'4l'39"; an arc distance of 434.70 feet; thence north along said north boundary 25.00 feet; thence west along said north boundary 245.69 feet to the TRUE POINT OF BEGINNING; thence north 156.13 feet; thence N50'39'19"E 330.21 feet; thence N33'00'54"W 109.47 feet to the southerly margin of the Burlington Northern Railroad Right-of-Way, said point being a point on a curve, the center which bears 539'23'00"E 1853.00 feet; thence westerly along said southerly margin and curve to the left. thru a central angle of 3'59'19", an arc • distance of 129.00 feet to a pointof compound curve, the center of said curve bears S43'22'19"E 4030.00 feet; thence westerly along said southerly margin and curve to the left, thru a central angle of 2'48'32", an arc distance of 197.57 feet to a point of tangency; thence 543'49'09"W along said south margin 271.00 feet to a point of curve; thence on a curve to the right along said southerly margin, having a radius of 1571.00 feet, thru a central angle of 7'32'02", an arc distance of 206.57 feet to a point of compound curve, the center which bears N38'38'49"W 727.00 feet; thence westerly along said southerly margin and curve to the right, thru a central angle of 16'55'35", an arc distance of 214.77 feet to a point of compound curve, the center which bears N21'43'14"W 1055.00 feet; thence westerly along said southerly margin and curve to the right, thru a central angle of 11'24'08", an arc distance of 209.95 feet to a point of canpound curve; the center which bears N10'19'06"W 696.00 feet; thence westerly along said southerly margin and curve to the right thru a central of 3'44'25", an arc distance of 45.43 feet to the easterly marg9in of the Charles Monster County Road; thence 534'18'31"E along said easterly margin 143.46 feet to the north boundary of said tract deeded to King County and described under King County Record- ing Number 6607786; thence N74'13J19"E along said north boundary 443.31 feet; thence N59'53'47"E along said north boundary 377.52 feet; thence east along said north boundary 35.00 feet to the TRUE POINT OF BEGINNING. PARCEL C That portion of Tract 25, Renton Shorelands Second Supplemental and that portion of the southeast quarter of Section 13, Township 23 North, Range 4 East, W.M., and that portion of the southwest quarter of Section 18, Township 23 North, Range 4 East, W.M., all in King County, Washington described as follows: Beginning at the south quarter corner of said Section 13; thence NO0'58'28"E along the north-south centerline thereof 1092.82 feet; thence N68'03'54"E 224.45•feet; thence N80'04'48"E 232.00 feet; thence 542'06'08"E 87.16 feet to the TRUE POINT OF BEGINNING; thence S42'06'08"E 127.84 feet; thence S31'14'05"d 358.99 feet; thence S47'10'01"E 71.34 feet; thence east 114.27 feet; thence south 68.91 feet to the south line of said Tract 25; thence.S88'15'00"E along said south line and the north line of the south 650.00 feet of the southeast quarter of said Section 13, a distance of 2080.76 feet to the east line of said Section 13; thence S89'10'25"E along the north line of the south 650.00 feet of the southwest quarter of said Section 18, a distance of 81.57 feet to the south line of the Burlington Northern Railroad Right-of-Way; thence N71'29'03'W along said south line 85.52 feet to the east line of said Section 13; thence 1471'29'03'W along said south line 826.56 feet to a point of curve; thence on a curve to the right along said south line, the center which bears N18'30'57"E 1005.77 feet, thru a central angle of 33'54'00", an arc distance of 594.84 feet; thence N37'35'03"W along said south line 308.70 feet to a point of curve; thence on a curve to the left. along said south line, the center which bears 552'24'57'V 1165.09 feat, thru a central angle of 16'17'61", an arc distance of 331.35 feet to a point which bears N41'28'l0"E from the TRUE POINT OF BEGINNING; thence S36'19'35"W 188.63 feet to a point on a curve, the center which bears 536'19'35"W 967.46 feet; thence northwesterly along said curve to the left, thru a central angle of 4'39'32", an arc distance of 78.67 feet; thence 538'54'22'V 451.74 feet to a point on a curve, the center which bears R V. 543'36'23"W 170.00 feet; thence southeasterly along said curve to the right, thru a central angle of 3'08'37", an arc distance of 9.33 feet; thence S43'15'00"E 20.74 feet; thence 527'21 '32"W 44.14 feet to the TRUE POINT OF BEGINNING. "."' EIS CHECKLIST CITY OF RENTON, WASHINGTON ENVIRONMENTAL CHECKLIST FORM FOR OFFICE USE ONLY Application No. Environmental Checklist No. PROPOSED, date: FINAL, date: Declaration of Significance Declaration of Significance Declaration of Non-Significance Li Declaration of Non-Significance COMMENTS: Introduction The State Environmental Policy Act of 1971, Chapter 43.21C, RCW, requires all state and local governmental agencies to consider environmental values both for their own actions and when licensing private proposals. The Act also requires that an EIS be prepared for all major actions significantly affecting the quality of the environment. The purpose of this checklist is to help the agencies involved determine whether or not a proposal is such a major action. Please answer the following questions as completely as you can with the information presently available to you. Where explanations of your answers are required, or where you believe an explanation would be helpful to government decision makers, include your • explanation in the space provided, or use additional pages if necessary. You should include references to any reports or studies of which you are aware and which are rele- vant to the answers you provide. Complete answers to these questions now will help all agencies involved with your proposal to undertake the required environmental review with- out unnecessary delay. The following questions apply to your total proposal, not just to the license for which you are currently applying or the proposal for which approval is sought. Your answers should include the impacts which will be caused by your proposal when it is completed, even though completion may not occur until sometime in the future. This will allow all of the agencies which will be involved to complete their environmental review now, with- out duplicating paperwork in the future. NOTE: This is a standard form being used by all state and local agencies in the State of Washington for various types of proposals. Many of the questions may not apply to your proposal. If a question does not apply, just answer it "no" and continue on to the next question. ENVIRONMENTAL CHECKLIST FORM I. BACKGROUND • 1. Name of Proponent ALTERRA CORPORATION 2. Address and phone number of Proponent: 710 CHERRY ST. SEATTLE, WA 98104 (206) 382-0333 3. Date Checklist submitted July, 1984 4. Agency requiring Checklist City of Renton Ruilding & Zoning Dept. 5. . Name of proposal, if applicable: Blackriver Technology Park 6. Nature and brief description of the proposal (including but not limited to its size, general design elements, and other factors that will give an accurate understanding of its scope and nature): The general site consists of over 70 acres. An area of over 51 acres shall be filled with approximately 425,000 cubic yards of material. Fill shall serve as base for future office/manufacture structure and an access road. For detailed information about future development see draft and final EIS "Blackriver Office Park" April 1981 & 82. -2 • - 7. Location of proposal (describe the physical setting of the proposal, as well • as the extent of the land area affected by any environmental impacts, including any other information needed to give an accurate understanding of the environ- mental setting of the proposal): •- The site is located south of the Burlington Northern Railroad right-of-way. To the east is the Earlington Woods P.U.D. and to the south is the Washington Technical Park. 8. Estimated date for completion of the proposal: Filling shall be completed as suitable material becomes available. 9. List of all permits, licenses or government approvals required for the proposal (federal, state and local--including rezones): Grading and filling permit City of Renton 10. Do you have any plans for future additions, expansion, or further activity related to or connected with this proposal? If yes, explain: Yes: Water, sanitary sewer and storm drainage utilities shall be installed as well as Blackriver Blvd. (access road). Future structures shall be constructed. 11. Do you know of any plans by others which may affect the property covered by your proposal? If yes, explain: Yes: SCS is currently using the site as a excaved soils stockpile. 12. Attach any other application form that has been completed regarding the pro- posal; if none has been completed, but is expected to be filed at some future date, describe the nature of such application form: See Attached: Master Application Form II. ENVIRONMENTAL IMPACTS (Explanations of all "yes" and "maybe" answers are required) (1) Earth. Will the proposal result in: (a) Unstable earth conditions or in changes in geologic substructures? X r M YB NO (b) Disruptions, displacements, compaction or over- covering of the soil? X YES MAYBE NO (c) Change in topography or ground surface relief features? - X 'LS— MAYBE WO— (d) The destruction, covering or modification of any unique geologic or physical features? X YES MAYBE NO (e) Any increase in wind or water erosion of soils, either on or off the site? X YES MAYBE NO (f) Changes in deposition or erosion of beach sands, or changes in siltation, deposition or erosion which may modify the channel of a river or stream or the X bed of the ocean or any bay, inlet or lake? Explanation: B: The proposal is to fill w/425,000 CY ovj sexifstli!g No elevations. C: See above. D: The clearing of trees and vegetation which may be considered unique. E: Only the limited amount that may occur during construction. F: The current SCS construction and work within the P-1 channel and this proposal change the flood boundry on site. -3- (2) Air. Will the proposal result In: (a) Air emissions or deterioration of ambient air quality? X YES MAYBE N� (b) The creation of objectionable odors? X TES- MAYBE NU— (c) Alteration of air movement, moisture or temperature, or any change in climate, either locally or regionally? X YES MAYBE NO Explanation: C: Due to the reduction of existing vegetation, there may be very minor localized changes. • (3) Water. Will the proposal result in: (a) Changes in currents, or the course of direction of X water movements, in either marine or fresh waters? YES MISYBE NO (b) Changes in absorption rates, drainage patterns, or X the rate and amount of surface water runoff? YES RATETE NO (c) Alterations to the course or flow of flood waters? X YES MAYBE NO (d) Change in the amount of surface water in any water • body? X YES MAYBE NO (e) Discharge into surface waters, or in any alteration surface water quality, including but not limited to temperature, dissolved oxygen or turbidity? X YES- WIFE IFO (f) Alteration of the direction or rate of flow of X ground waters? YES MAYBE NO (g) Change in the quantity of ground waters, either through direct additions or withdrawals, or through X interception of an aquifer by cuts or excavations? YES MAYBE NO (h) Deterioration in ground water quality, either through direct injection, or through the seepage of leachate, phosphates, detergents, waterborne virus or bacteria, or other substances into the ground waters? X YES MAYBE NO (i) Reduction in the amount of water otherwise available for public water supplies? X TEE— WET U— Explanation: B: Due to imported soil types and compaction, the ab- sorption rates will change. Also the patterns will change due to proposed contours and elevations. • _ (4) Flora. Will the proposal result in: (a) Change in the diversity of species, or numbers of any species of flora (including trees, shrubs, grass, crops, microflora and aquatic plants)? XX (b) Reduction of the numbers of any unique, rare or endangered species of flora? � YES' MAYBE NO (c) Introduction of new species of flora into an area, or in a barrier to the normal replenishment of existing X species? MAC NO (d) Reduction in acreage of any agricultural crop? X • et— MAYBE RAVITE NO Explanation: A: Clearing of trees and shrubs shall reduce numbers. B: (See above) The area is a reparian forest which is unique in the area. C: The introduction of errosion control grasses and the prevention of the return of existing tree types in the areas of fill. -4- (5) Fauna. Will the proposal result in: (a) Changes in the diversity of species, or numbers of any species of fauna (birds, land animals including reptiles, fish and shellfish, benthic organisms, insects or microfauna)? X YES M YB NU— (b) Reduction of the numbers of any unique, rare or X endangered species of fauna? YES MAYBE NO (c) Introduction of new species of fauna into an area, or result in a barrier to the migration or movement X of fauna? v MAYBE NO (d) Deterioration to existing fish or wildlife habitat? A YES MAYBE NO Explanation: A: Due to clearing and filling operations species may • relocate to preserve areas. C: New species may use the area after the grasses take hold. (6) Noise. Will the proposal increase existing noise levels? X YES MAYBE NO Explanation: Construction noises and truck noise may increase but shall be short term. (7) Light and Glare. Will the proposal produce new light or glare? X Y7s MAYBE Nil— Explanation: (8) Land Use. Will the proposal result in the alteration of the present or planned land use of an area? X YET— MBE NU— Explanation: The present land use is reparian forest. However, the zoning is MP and the proposal is to clear and fill part of the site. (9) Natural Resources. Will the proposal result in: (a) Increase in the rate of use of any natural resources? X YES MAYBE NO (b) Depletion of any nonrenewable natural resource? X YES RATITE NO Explanation: A: The proposal will use soil and rock suitable for such filling operations. • (10) Risk of Upset. Does the proposal involve a risk of an explosion or the release of hazardous substances (including, but not limited to, oil, pesticides, chemicals or radiation) in the event of an accident or upset conditions? X Y-ES MST NO Explanation: Only which is typical in the construction processes (11) Population. Will the proposal alter the location, distri- . button, density, or growth rate of the human population of an area? PEA MAYBE q� Explanation: -5- • (12) Housing. Will the proposal affect existing housing, or X create a demand for additional housing? YES MAYBE NO Explanation: (13) Transportation/Circulation. Will the proposal result in: (a) Generation of additional vehicular movement? X YES MAYBE NO(b) Effects on existing parking facilities, or demand X for new parking? YES MAYBE NO X (c) Impact upon existing transportation systems? YS M (d) Alterations to present patterns of circulation or X movement of people and/or goods? YES MAYBE NO (e) Alterations to waterborne, rail or air traffic? X TES— MAYBE NO (f) Increase in traffic hazards to motor vehicles, X bicyclists or pedestrians? YET— MTBr NO Explanation: C & F: The use of large trucks to bring soils to the site via freeways and city streets. (14) Public Services. Will the proposal have an effect upon, or result in a need for new or altered governmental services in any of the following areas: (a) Fire protection? X__ YESMAYBE NO (b) Police protection? X YES MAYBE NO (c) Schools? X YES MAYBE NO X (d) Parks or other recreational facilities? YES MAYBE NO (e) Maintenance of public facilities, including roads? X YES MAYBE NO (f) Other governmental services? X YES MAYbE NO Explanation: E: May be some dirt and dust caused by trucks on public roads. • (15) Energy. Will the proposal result in: (a) Use of substantial amounts of fuel or energy? YES MAYBE NO (b) Demand upon existing sources of energy, or require the development of new sources o/ energy? X YET— WIFE BFE N O Explanation: (16) Utilities. Will the proposal result in a need for new systems, or alterations to the following utilities: (a) Power or natural gas? X YES MAYBE NO (b) Communications systems? X ( YES MAYBE NO (c) Water? X YES MAYBE NO -6 • - (d) Sewer or septic tanks? X YES RAM Nth (e) Storm water drainage? X YES MBE N i� X (f) Solid waste and disposal? yy�� YES MAYBE N-0 Explanation: , E: Storm drainage and erosion control system on site will be required. (17) Human Health. Will the proposal result in the creation of any health hazard or potential health hazard (excluding mental health)? X Trs- M Y B N O Explanation: (18) Aesthetics. Will the proposal result in the obstruction of any scenic vista or view open to the public, or will the proposal result in the creation of an aesthetically offensive X site open to public view? YES MAYBE NO Explanation: The replacement of a forest by grass lands may be • offensive to some aspects of the public (19) Recrolti�n, Wi i: t.i N proposal re:iul t in A:i im;,act upon the qualityor oo.otit,y of existing rccrn +ioi.ai opportunities? X YES MAYBE NO Explanation: • (20) Archeologic:_1/liistori.:al. Will the proposal result in an altera[ion ofja significant archeological or historical X site, structure, object or building? Y MAYS Nil— Explanation: III. SIGNATURE I, the undersigned, state that to the best of my knowledge the above information is true and complete. It is understood that the lead agency may withdraw any decla- ration of non-significance that it might sue n reliance upon this checklist should there be any willful misrepresentation o willfu lack of full is osure my part. Proponent: signed) (name printed) City of Renton Building i Zoning Department May, 1983 For a 176 ADJACENT LANDOWNERS * BATCH NUMBER: CK C0 MMENTS . . * CUSTOMER NAME RICHARD CAROTHER ' * * * 43 70-1980-01 2143 70-2 000-05 F/CHG ASSOCIATES E0980 CF/CHG ASSOCIATES E0980 '00 S 333RD ST 200 S 333RD ST FEDERAL WAY WA 98003 FEDERAL WAY WA 98003 214370-2280-06 377920-0005-04 . CF/CHG ASSOCIATES E0980 NEWBURN LLOYAL L C0379 200 S 333RD ST 2230 151ST PL SE FEDERAL WAY WA 98003 BELLEVUE WA 98007 377920-0010-07 377920-0053-05 SANFORD H S 441938 SANFORD H S 441938 4520 55TH AVE NE 4520 55TH AVE NE SEATTLE WA 98105 SEATTLE WA 98105 377920-0056-02 377920-0120-04 SANFORD H S 441938 SANFORD H S 441938 4520 55TH AVE NE 4520 55TH AVE NE SEATTLE WA 98105 SEATTLE WA 98105 377920-0150-07 377920-0170-03 - BLACK RIVER QUARRY BLACK RIVER QUARRY 6808 S 140TH 6808 S 140TH ST ' SEATTLE WA 98178 SEATTLE WA 98178 722950-0320-02 918800-0010-03 BLACK RIVER QUARRY INC FIRST CITY QUITIES 329999 ' 6808 S 140TH 800 5TH AVE SUITE 4040 SEATTLE WA 98178 ' : SEATTLE WA 98101 918800-0020-01 918800-0030-09 HOLVICK DEREGT KOERING 319800 HOLVICK DEREGT KOERING 319800 1230 OAKMEAD PWY SUITE 210 1230 OAKMEAD PWY SUITE 210 SUNNYVALE CALIF 94086 SUNNYVALE CALIF 94086 918800-0040-07 918800-0050-04 HOLVICK DEREGT KOERING 319800 HOLVICK DEREGT KOERING ' 319800 1230 OAKMEAD PWY SUITE 210 . 1230 OAKMEAD PWY SUITE 210 . SUNNYVALE CALIF 94086 SUNNYVALE CALIF 94086 918800-0060-02 918800-0130-08 HOLVICK DEREGT KOERING 319800 FIRST CITY EQUITIES 391023 1230 OAKMEAD PWY SUITE 210 800 5TH AVE SUITE 4040 SUNNYVALE CALIF 94086 SEATTLE WA 98104 918800-0140-06 9188 00-0150-03 FIRST CITY EQUITIES 391023 KING COUNTY 359800 800 5TH AVE SUITE 4040 500 KC ADMIN BLDG SEATTLE WA 98104 SEATTLE WA 98104 • **************************************4t**************************************. * BATCH NUMBER: CS COMMENTS 121ND. LA-A)D * CUSTOMER NAME RICHARD CAROTHER wNF_2.47 * **************************************f t***** *******&**Anic*sec****************k* 722950-0310-04 2423 04-9 008-04 STATE OF WN CONTAINER CORP OF AMERICA C0481 MO ADn2.F_SS OP R-0 1 1ST NATL PLAZA CHICAGO IL 60670 182305-9250-06 182305-9250-06 PACIFIC COAST RR CO 301 GREAT NORTHERN BLDG A //� . SEATTLE WA 98101 /N 132304-9006-09 132304-9007-08 .h _ SANFORD H S 441938 BURLINGTON NORTHERN INC 1279 4520 55TH AVE NE I SEATTLE WA 98105 810 3RD AVE TX DPI 208 CTRL SEATTLE WA 98104 132304-9009-06 132304-9010-03 BURLINGTON NORTHERN .INC *A0181 SANFORD H S 441938 810 3RD AVE 4520 55TH AVE NE 208 CENTRAL BLDG - TAX DEPT SEATTLE WA 98105 SEATTLE WA 98104 132304-9020-01 132304-9025-06 C & P S RY CO CF CHG ASSOCIATES E0980 No A°M ESS OF /L(Co2A 200 S 333RD ST FEDERAL WAY WA 98003 • 132304-9078-02 132304-9080-08 KING COUNTY 0740 0577 KING COUNTY - 0740 0577 $oo KG , Dr1iN P5`pG, 500 KG ADP-1Ito i3LD4 Si=ATf ter_ WA 8104 SiEAir(_F wok, 9 8!O 9 132304-9084-04 1323 04-9084-04 • BURLINGTON NORTHERN INC 2D9800 810 3RD AVE 208 CENTRAL BLDG-TAX DEPT ' '✓ �'( SEATTLE WA 98104 • PROJECT DESCRIPTION PROJECT DESCRIPTION I. PROJECT TITLE Blackriver Technical Park, Clearing and Grading, Renton, Washington II. SCOPE OF WORK Blackriver Technical Park is located on 71.16 acres of land to the south of The Burlington Northern Railroad tracks and to the north of Washington Tech- nical Park and the renovated P-1 Channel . The project includes clearing and grading approximately 51 acres of the north easterly portion of the site. There are preserve areas containing significant trees within the clearing area that will be retained. (See attached, "Guide- lines for the Preservation Outside the 'Preserve' Zone"). Over 19 of 71.16 acres shall be retained as natural preserve areas or are currently being utilized for the renovation of the P-1 Channel . The grading will include raising existing grades up to base grades for future access drive, utilities and building development. The grades will increase a maximum of 12 feet at the west end of the site in order to accommodate exist- ing sanitary sewer pipe invert elevations offsite. Fills at the southeast will also bring existing grades above the 100 year flood levels. The transition fill slopes will be set at 2 to 1 maximum steepness and cut slopes set at 3 to 1 to assure stability of the railroad tracks. III. Fill Material • A. Type - The material to be used for this project will be from various sources. Approximately 30,000 cubic yards of material will be from on-site excavated from the old railroad grade. Approximately 95 to 97,000 cubic yards of material is currently being deposited on-site from the P-1 Channel project. Material from the I-90, Mercer Island and Mt. Baker Ridge Tunnel may be deposited on-site. Portions of the soils reports containing soil logs are attached herein. Other sources of material shall be utilized as they become available. There shall be a soils engineer on-site to grade and inspect all import- ed materials. The entire filling will require approximately 425,500 cubic yards of material . B. Construction Methods - The following are the approximate steps to be followed during the placement of all fills: 1 ) Drain area within limit of work of standing water. 2) Clear vegetation, except significant trees to be preserved. 3) Place filter fabric on soft soils and on access drive. 4) Establish erosion controls at limit of work. 5) At Access Road place 18 inches of material on top of woven filter fabric as a fill mat compacted to 95%. 6) Place and compact additional soils in 8 inch lifts throughout fill areas. 7) Installation of the fill material shall be in accordance with "Standard Specification for Municipal Public Works Construction" 1981 Edition, Washington State Chapter APWA. C. Truck Routing - Freeway: All loaded trucks shall approach the site from I-5 North and/or Southbound, exit at Empire Way South, turn southeast and continue to Rainier Avenue South, turn South to South 7th Street, head west to Powell Ave S.W. and North to enter the site. Load limits on I-405 may allow empty truck to use I-405 as an alternate route. Arterials and City Streets: Access to the site may also utilize Monster Road at the west end of the site. Truck traffic shall use Empire Way South and exit at 68th Ave. S. , proceed to Monster Road S.W. and access the site utilizing the existing 12 foot wide dirt road, currently being used for the P-1 Channel Project. IV. Dust Control Prior to hydro-seeding, dust control shall be accomplished by controlling moisture content of soil and sprinkling. V. Hours of Operation The hours of sitework shall be the general work hours of 7AM to 5PM, 5 days a week. Truck hauling to the site may be reduced during AM/PM "Rush Hour" , traffic periods to reduce congestion of arterials and city streets. VI. Rehabilition and Seeding See the attached - Erosion Control Specification, Section 02485. VII. Project Timing The clearing and grading shall start upon issuance of a permit from the City of Renton (Est. September, 1984) , and continue until the proposed grades are reached. ;ut Quantities , Planimeter Readings Cubic 1st 2nd 3rd average Yards 123.5185 .3 . . 29 .28 . 29 216.0494 .29 .29 .3 . 2933333 228.3951 .34 . 32 . 31 . 323333 3 328.3951 .56 .58 .55 .5633333 318.5185 . 29 . 29 .31 .2966667 354.3210 .67 . 64 . 67 .66 492. 5926 .69 . 65 . 67 . 67 619. 7531 1 . 02 1 .99 1 .003 33"3 498. 7654 . 33 . 35 . 35 .3433333 274. 0741 . 4 . 39 .4 .3966667 314.8148 . 45 . 46 . 45 . 4533333 501 . 2346 . .9 .9 .9 .9 695.0617 .95 .97 1.01 .9766667 654. 3210 .8 .79 .78 . 79 566. 6667 .71 .77 .74 .74 786. 4198 1.4 1.37 1.38 1.383333 1079.012 1 .52 1.53 1.54 1.53 • 1390. 123 2.22 2.24 2.21 2.223333 1596. 296 2. 1 2.08 2.08 2.086667 • 1553.086 2. 1 2. 1 2. 12 2. 106667 1600.000 2.22 2. 2 2. 22 2.213333 1916.049 2.98 2.94 2.96 2.96 . 2625. 926 4. 15 4. 1 4. 14 4; 1.3 3272.840 ' 4. 73 4. 7 4.69 4. 706667 3 295.062 4. 22 4. 17 4. 10 4. 19 • 2566. 667 2. 77 2. 73 2. 72 2. 74 • • Cut Quantities Planimeter Readings. Cubic 1st 2nd • 3rd average Yards 2.77 2.73 2.72 2.74 1596.296 1.56 1 .57 1.58 1. 57 824.6914 .65 . 66 .66 .6566667 243.2099 0 TOTAL 30532. 16 b] acc f . Black River MLO 6/15/84 i Station Fill Quantities Flanimeter Readings Cubic 1st 2nd 3rd Average Yards 985 0 423.0864 1100 . 1 .99 .99 .9933333 2765. 432 1200 6. 45 6.49 6. 48 6. 4733:33 . 6061 . 728 1300 9.91 9.89 9.88 9.893333 8958.025 1400 14.28 14.28 14.32 14. 29333 13783. 95 15000 22.85 22.96 22.96 22.92L"r_ 16956. 79 1600 22.89 22.84 22.85 22. 06 • 18465.43 170C) 26.97 27.04 26.98 26.99667 17450. 62 1800 20.04 20. 14 20. 18 20. 12 15903. 70 1900 22.83 22.82 22.81 22. 82 • 16464. 20 2000 21. 69 21.59 21. 62 21.63333 • 15813.58 2100 21 .04 21. 1 21 .05 21 .06333 14640. 74 2200 18.51 18. 46 18.43 18. 46667 13692.59 2300 18.53 18.51 18.47 18. 50333 1551 .85 2400 15.41 ' 15. 4 15.35 15.38667 13503.70 • 2500 21.09 21.08 21.05 21 .07333 15591.36 2600 21.02 21.06 20.99 21.02333 14850.62 2700 19. 12 19.08 19.02 19. 07333 14392.59 2800 19.82 19.77 19.77 19.78667 • 4. 14725.93 • 2900 19.98 19.94 20 19.97333 14364. 20 . 3000 18.81 18.78 18.84 ,16. 81 14237.04 3100 19.65 19.65 19.59 19. 63 • 15918.52 , * 3200 23.37 23.31 23.37 23.35 18432. 10 . I 3300. . 26. 46 26.41 26.313 26.41667 • '1E1675. 31 3400 24.09 23.93 24 24.00667 .. 16086.89 • 3.500 24.86 24.85 24. 79' 24. 83333 . ' 10739. 51 3600 25. 79 25. 71 25. 79 25. 76333 bl accf Black River MLO 6/15/84 Station Fill Quantities Planimeter Readings: Cubic 1st . 2nd 3rd Average Yards • 3600 25. 79 25.71 25. 79 25. 76333 17496. 30 • . 3700 . 21 . 5 21 .53 21 . 4 21 . 47667 14386. 42 3800 17. 41 17. 33 3 17.36 17. 36667 12106. 17 3900 15. 3 15.39 15. 27 15. 32 9945. 679 4000 11 .52 11 . 48 11 .6 11 .53333 7438. 272 4100 8.5 8. 56 8.59 8.55 5724. 691 4200 6.91 6.89 6.92 6. 906667 .4808. 642 4300 6. 1 6.06 6.07 6.076667 4250. 617 4400 5.39 5. 41 5. 4 5. 4 3551 .852 4500 4.21 4.2 4. 16 4. 19 2760. 494 4600 3.27 3.27 3.25 3. 263333 2316. 049 4700 2. 99 2.99 2. 99 2.99 2002. 469 4800 2. 42 2. 41 2.42 2. 416667 1434.568 4900 1 . 45 1 . 47 1. 45 1. 456667 • 887.6543 5000 .96 .93 .93 .94 569. 1358 5 100 .6 .59 .6 .5966667 587.6543 5200 .90 1 .99 .99 297 5281 0 TOTAL 456015. 1 EROSION CONTROL 02485 PAGE 1 • PART 1 GENERAL 1.01 GENERAL A. • Erosion control shall consist of seeding, fertilization, tacki- fier and mulching the areas shown on the plans, all in accordance with these special provisions, the standard specifications, and the details shown on the drawings. PART 2 PRODUCTS 2.01 SEED A. Grass seed of the type specified and shall conform to the standards for "certified" grade seed or better as outlined by the State of Washington Department of Agriculture's "Rules for Seed Certification," latest edition. Seed shall be furnished in standard containers on which shall be shown the following information: 1. Seed name 2. Lot number 3. Net weight• 4. Percentage of purity 5. Percentage of germination 6. Percentage of weed seed content and inert material clearly marked for each kind of seed in accordance with applicable state and federal laws B. Upon request, the Contractor shall furnish the Owner's Represen- tative with duplicate copies of a statement signed by the vendor certifying that each lot of seed has been tested by a recognized seed testing laboratory within six (6) months of the date of delivery on the project. Seed which has become wet, moldy, or otherwise damaged in transit or storage will not be accepted. C. The seed mixture and rate of application shall be as follows: Perennial Rye 40 pounds per acre Creeping Red Fescue 26 pounds per acre White Dutch Clover 15 pounds per acre Shasta Daisy 8 pounds per acre (Alaska Strain) Total 90 pounds per acre Apply at the rate of 90 pounds per acre. 2.02 FERTILIZER A. Fertilizer shall be standard commercial grade of organic or inorganic fertilizer of the kind and quality as specified. It may be separate or in a mixture containing the percentage of • total nitrogen, available phosphoric acid, and water-soluble EROSION CONTROL 02485 PAGE 2 potash in the amounts specified. All fertilizers shall be furnished in standard unopened containers with weight, name of plant nutrients, and marked, all in accordance with state and federal laws. B. Acceptable commercial fertilizer may be supplied in one of the following forms: 1. A dry free-flowing granular fertilizer suitable for applica- tion by agricultural fertilizer spreader commonly available. 2. A soluble fertilizer ground to a fineness that will permit complete suspension of insoluble particles in water, suit- able for application by a power sprayer. 3. A granular or pelleted fertilizer suitable for application by blower equipment. 4. A nonvolatile liquid fertilizer. C. Commercial fertilizer in the following formulation shall be furnished as specified. Fertilizer shall be slow release type: Total nitrogen 10% (N) Available phosphoric acid 20% (P) Water-soluble potash 20% (K) D. The rate of fertilizer application shall be three hundred (300) pounds per acre. Fertilizer other than commercial grade shall be furnished only when specified or when shown on the plans. 2.03 MULCH - WOOD CELLULOSE MULCH A. All mulch material shall be in an air-dried condition, free from noxious weeds, weed seeds, and other materials detrimental to plant life. "Silva-Fiber" or approved equal . B. Mulch shall be applied at the rate of 1,500 pounds per acre. C. Wood fiber mulch shall be adequately and uniformly agitated and mixed in uniform distribution until pumped from tank. Mulch shall be dyed green. 2.04 TACKIFIER A. Tackifier shall be 100 percent organic material of a combination of hydrocolloids selected to form a protective film. J-Tac or approved equal . PART 3 EXECUTION 3.01 Before proceeding with this portion of the work, the Contractor shall be required to provide the Owner's Representative with EROSION CONTROL 02485 PAGE 3 sufficient evidence of his past successful experience in this type of work. 3.02 SEEDING OPERATION A. Seeding shall begin immediately following the bringing to speci- fied finished grade an area of sufficient size that will ensure an efficient and economical operation, unless otherwise directed. Seeding shall be done within the proper seeding dates in the prevailing area or as directed by the Owner's Representative. B. Seeding shall not be done during windy weather or when the ground is frozen. Seed and fertilizer shall be placed at the rate and mix specified or as directed by the Owner's Representative. Where seed is sown with water by the use of hydraulic seeder, inoculant may be added to the solution at the rate recommended by the manufacturer. Seed and fertilizer may be sown by the fol- lowing methods: 1. An approved type hydraulic seeder which utilizes water as the carrying agent, and maintains a continuous agitator action which will keep the seed and fertilizer mixed in uniform distribution until pumped from the tank. The pump pressure shall be such as to maintain a continuous, no-fluctuating stream of solution. 2. Areas inaccessible to the above methods of application shall be seeded and fertilized by approved hand methods. Distri- bution of the material shall be uniform and at the rate specified. It shall be the Contractor's responsibility to provide qualified equipment and methods to perform the work as specified. 3.03 SPREADING MULCH A. Mulch material of the type specified shall be furnished, hauled and evenly applied at the rates indicated, where shown on the plans, or where directed by the Owner's Representative. Mulch shall be spread on seeded areas within forty-eight (48) hours after seeding unless otherwise specified. Distribution of mulch material shall be by means of a mulch spreader which utilizes forced air to blow mulch material on the seeded areas. The spreader shall produce a uniform distribution of mulch. When specified, mulch material shall be anchored in place with a tackifier of the type specified. Mixed with the.mulch at the rates recommended by manufacturer or as specified. Areas beyond the range of the mulch spreader shall be mulched by hand methods. Distribution of the materials shall be uniform and at the rate specified. EROSION CONTROL 02485 PAGE 4 3.04 CONTRACTOR'S RESPONSIBILITY FOR WORK A. The Contractor shall be responsible for all work herein described in accordance with the following requirements and/or as directed by the Owner's Representative: 1. Protect all areas involved against vehicle and pedestrian traffic by warning signs and barricades. 2. Reseed by specified means all areas failing to show a uniform stand of grass after the germination of seed, or damaged through any cause before the final inspection. END OF SECTION • • Guidelines for Tree Preservation Outside the "Preserve" Zone Trees selected for preservation shall have a "tree well" (fill retaining wall ) constructed to maintain an undisturbed existing ground area around the tree. Provide approximately 5 sq. ft. for each caliper inch of trunk measured at 48" above existing grade. The tree well shall be constructed in a manner to protect all roots. No root cutting allowed. Special care shall be taken to maintain ground water level and quality as nearly as possible to pre-development conditions. This may include special irriga- tion and drainage systems or culvert systems connecting the tree wells to nearby wetlands so that the rise and fall of ground water will be similar to pre-development conditions. Storm water may be retained on-site as necessary or desirable to assist in maintaining ground water levels. Tree wells shall be constructed of railroad ties (or treated timbers) with an 8 inch high curb of timber, concrete or asphalt on all sides. Provide hand rails where resultant depressions are more than 30 inches deep. Conditions may vary at each tree location. Analyze each tree to ascertain the best solution or combination of solutions to minimize adverse environ- mental impacts. Consult an Aborist regarding selection of trees to be preserved and preserva- tion procedures to be used. Selected trees are subject to review and approval by the City of Renton. • • HA- RAIL • pea KRQNI R1E1 �.� • t41/e. .1ILS am PLAI-JTINeg ts" LUR[3 EN .0.. ►/ ,o J� tit-' i-40 idly a'� z ,rr+ i^' o ,,,,e1 ,. Nye r I •z '.l•. `1f'"= iXi agt741.. i �. ay, � di RAY WETLAN1 .S 1 6 PP.x.sg-Rva) } t.11-471 -IL1RBlF.z> AREA GULVEF�T • -•mcn-E.: CULVERT i AT ELEVATIo1J t� RMII-IBp al.! -SITE- Tt7 A.L.LoIh1 elRout.-1 1:7 Wp.T 1=K F FurpM . T (,J>rTLAND To FLokl IN- AHD OUT of - EE WF_t_L •p.s WA-T E Lt�t=L. FLyL�4'T�g. LANDSCAPE GUIDELINES 1 .01 INTRODUCTION LANDSCAPE GUIDELINES The landscape consists of elements that give form to exterior spaces. Thus, the character of the landscape is created by elements such as streets and building setbacks, the variety and placement of elements such as signing, site lighting, walkways, and plant materials, and the arrangement of major func- tional elements such as project entrances, parking lots, buildings, service areas etc. Given that project architecture and building sites within Black River Office Park will most likely be of varying types and sizes, landscaping as a design element will play the key role in creating and conveying the overall character of Black River as a "park-like" working environment. The purpose, then, of these Landscape Guidelines, is to provide design criteria which will help to insure that Black River Office Park achieves an image that is distinctive, clearly understandable and unified. The Landscape Guidelines recognizes that the Black River Office Park consists of three prominent zones, namely, the streetscape zone, the interior zone, and the "preserve" zone. While the "preserve" zone is precisely as it suggests, areas of no disturbance, an understanding of the nature of the other two zones is important to understanding the landscape guidelines and their intent. ' INK2Z t -m9•-aite -1-"mNeqd 11,1' , 'mod Sit-r1at-4 -aHc'Z z101.2131N I ® •M•s -�v 7111'51:tivd sal-r- ® -1,1•5- e ,-aM.ez:1 1 .1 Streetscape Zone The streetscape zone is the primary image setting zone. All improvements within this zone will have the greatest degree of control . Attributes within this zone include: 1. The Landscape Easement - This easement begins at the back of the curb of the main roadway and extends inward for a distance of 30 feet along the entire length of the main roadway. The first 13 feet minimum (including a 5 foot walk) to 24 feet maximum are designated as a Public Parkway and shall be installed by the Developer. The remaining fi.-feet minimum to 17 feet maximum shall be a Transition Zone to be improved by the adjacent user. Common elements within the Landscape Easement include walkways, planting, irrigation, street lighting, project signing and project entries. W Avg. 5.N.-1 1-1.- AVM. 5.1,.1.1 . .--iK . 1-' P ff ZONE . ' •P.K 1 N ea Ix LANDA9 THIS SIDE of WALLWA`i Si- L.L ,,... H çep° MI14, 13.e rizz;VIIX.P LaE - - - --r- - -- , 1 ,..,,;t. - ----\ - -_..,k,_______ ____-_--T5,sgj..i \V'' � _ ' L1t.It_ -'�--'r :' ,% I fig. DF .L1 fig . _ Jai `milliPr '444951/" `per gs' Mill, 1,6•W N Fo RMA I. 'Stt-M-r . "r E PLN-tTI NG, ,LL 1.At-De- PINtx -n-IIS SIPE. I.JALKL4A.~r' ' Be.DPP II L-NP PE sE NetEkIT !3Y t \ 5.i .r.: Pi✓R. 1 .1 .1 Streetscape Zone Design Concept The streetscape within Black River Office Park will consist of a unified single image, namely: a single row of street trees planted approximately 5 feet from the curb line on a landscaped berm, on both sides of the main roadway. Lawn shall occur from the curb to the walkway. Informal tree, shrub and ground cover plantings shall occur between the walkway and the landscape easement. S 2 III# 411)00.0:01111) _ gr. -6Tizamr--rizEe- -in Wei. 0 OIPTIOriii.6 r n� S. II•1FFRM&L FLAh4?1I J : -..,-��,1V i',1,, 1111� /.4 ' TEEM.- , 51-1RUS5 4 III • Individual project entries will punctuate these plantings providing highlighted corporate identification. A walkway will meander through the public parkway providing an added dimension to the overall Black River streetscape scene. I' !i IPl \41, L( ' � LANPs6/46\PV- F44% r tT 1 .1 .2 Interior Zone The interior zone encompasses all exterior elements from the 30 foot Landscape Easement to the building setbacks. This zone is subject to the needs of each User and, thus, is meant to have a greater degree of flexi- bility than the streetscape zone. Common concerns within this zone in- clude: parking lot arrangements and landscaping, site lighting, regula- tory and directional signing, and service area screening. a°11161 4 4ES AVE. Pok1EL L AvE.5.144. INTERIom ZoNa • 1 .1 .3 Interior Zone Design Concept It is intended that the interior zone of Black River Office Park, consist- ing primarily of parking lot landscaping, be planted in geometric patterns. (Refer to Section 1 .2.4.b-4 for plant types.). Subtle light levels, re- strained graphics and screening of service areas will all contribute to reinforcing the Black River landscape design concept. 1 .2. LANDSCAPE DESIGN GUIDELINES 1.2.1 Assessment District Installation and Maintenance Agreement 1 . All landscape improvements within the Public Parkway (Section 1 .1 .1-1 ) will be installed by the Developer or successor. 2. The 30 foot Landscape Easement (Public Parkway and Transition Zone) landscaping and irrigation will be installed as a continuous linear system the entire length of the streetscape zone. Occasional demolition and interruption of this system will be necessary during the process of access drive installations. It is a responsibility of the User to maintain the flow of the irrigation system during construction, and to re-establish the planting, grading and final irrigation layout that has been interrupted. WA.Y e. Ir. i CAP c i -r1 NW i RRJ'' L_IN�s 1.2.2 Maintenance of Unimproved Sites 1 . Sites that are not improved or built upon shall be maintained in a clean and neat appearance by the User. Weeds, brush and trash will be removed twice a year, once in the spring and once in the fall , or more often as required to maintain a high quality appearance. The Developer and their representative have the right to perform the necessary maintenance and charge the individual User as neces- sary. 1 .2.3 Landscape Coverage ' 1 . A minimum of five (5) percent of the area within the property lines of a development site shall be devoted to landscape materials unless otherwise approved in writing by the Grantor or successors. 1 .2.4 Street Frontage Zone Design Guidelines 1 .2.4.a Definition of Street Frontage Zone 1 . The street frontage zone is defined as that portion of the site which is adjacent to the Landscape Easement and/or is visible from the street. - w-t-1 �I �EM�IT' 11111111111 YARD'S I . 11:,v. s .F__,6, 1 .2.4.b Specific Design Limitation within the Street Frontage Zone 1 . Grading: Finish grading for each site shall meet the existing grade of the Public Parkway boundary. Transition slope in this zone shall not exceed 4:1 . 2. Service Areas: Service areas within this zone are to be enclosed with solid walls and screened with the appropriate landscape material . (Refer to 1 .2.4.b-4 for plant types. ) 3. Parking: All berms within the Landscape Easement zone shall be 3 feet minimum above the surface parking elevation within the street frontage zone. IP,A4,1‘rnom zcw.. \ 4•l MA�c P� 2. wpoge. &r.b.pg.. a 4*, �1 Lil �%1-�N�a IS 1 4wII 1� �e . 11 Tc.11_1;)< 4 7: dlINI11... iii-m--\,--- Iiiik% , till PARKING ROADWAY LAND�c� 4. Screening Shrubs: The following shrubs, in combination with walls and/or fences, have been selected to aid in eye level screening of service areas. Planting areas shall be a minimum width of 4 feet. Planting areas exceeding 4 feet shall also conform to these landscape guidelines. The shrubs should be planted at a size to achieve a minimum height of 5 feet within a 3 year period from the date of planting. Plant Name Maximum Spacing Comments Photinia fraseri 5 ' on center Cotoneaster franchetii 4' " " Cotoneaster lactea 4' " " Viburnum tinus 4' " " Viburnum rhytidophyllum 4' " " Mahonia aquifolium 3' " " Vaccinium ovatum 3' " " Prunus lusitanica 5' " H must be clipped Arbuteus unedo 4' " " Pieris japonica 3' " " Ligustrum japonicum 3' " II 'Texanum' Thuja occidentalis 22' " Buxus sempervirens 3' " IImust be clipped Rhododendron varieties 4' " " • 1 .2.5 Parking Lot Landscape Requirements 1 .2.5.a Tree Planting Requirements 1 . Two (2) types of trees are identified for the parking lot planting. (Refer to Section 1 .2.5.c for plant types.) Type A: End of Parking Column Planting Type B: Interior Parking Lot Planting 5' 9' t�'1 N G�—� Np E 'A' ili.q,!..:::::[p.,.,31 ::11::1,1,t,.,::..,.;Iscivoll::,9::.:.,::;.,i,,,:::.z.f.i.,:lio 11:1:Qiii.,:g.,:,,....,,,,,,...,,.,,,,;,:::?.:::-18,:signa:2,.:Km.,iii. TKOE s °II __;"ThRigt.i1K,.c.,:fi: - '.:;::::::;;;;;.,: . 'O ..................„,......„.............: „.........: „:„........„..,....,:„........,:.:.,:.,.....„.„..„.7rriM -ram gli Ailat,..:...:1:1 -:.::..,1:1.1,,,iiiiit!,:::::,:tot i,.,..,:ig.::!,.:i io.::::::ip.1,10.!,:::;,1,041.,!!!.:..!:!....,;,!!!,1 1 s R_ 9 t�s � t� -�ti _ -�� �- g� ��r� 0 �� � �������:� v ���v: yet tbIrQ7,. PEI=11'-Ih PI-ANTI C-ICa c.ol, MN SNP ...............•„....,..,.....,...................,.........................„......n.......„:„:„.,„,„.:,„....,..„....,.,...,.... T`fI'I✓ A...�y :FS;v 71TF� 1111111011riginitemptim 2,,,, 4 6 `s:M1:x"''::>:.i:([i`. iR „, .::,.,!..„.„,,,;,„,f,„,.:„.....,... „... ":,„,.„„,„.:,,,,,:.,. .... .....:..„,:,,,.:„„:„„„,„,::,:,„.„,,.:,.„,„:„:„,.„,,.,„„,,::„,:„,„,„,„.„ ......:.:::...„,„:„:„.....::,:::„ .. .:•.„ ..,. .. ., ,...:„„„„„.:„;.„,.:„,„,..,„„,„„„,,.:,.„,„:„,„„„,:::„.:,,,,,,,. :4,..,„„:„,...,,,..,,,,„:,,,.„,,,„,„,,,„,.„„,:,.,, ,...., . ,„ ,„„„.,,„,„„,,,::„..,,.„...,.,,,,,,..,,:„,.,:.„,,,.„„„„::,,, v ,:,,„„,,::,,,„„,:„,„:.„,:,,„„:„,,.„„,:..,„.„,„„,,;.„, Ai ......... r yy ' „lir" ill [: R r T O .F . :Y;E i . . ..;, y."„„,,„ . . ..,, . , . PE1r.I1' 1a-r g. ELSE Pi-ANTI KJ e4 Type A: Type A trees shall be planted at the ends of parking columns. A single tree specie, with a minimum height of 12 feet shall be planted throughout the User's entire parking lot compound. Type B: Type B trees shall be planted in the parking lot interior. A single tree specie, with a minimum height of 8 feet shall be planted every third stall . This tree specie may be different in separated parking lots within the compound. Credit will not be given for perimeter edge tree planting. 5440 DP" GaLUh1N 19-m-1-r1 N'1 (1) USED 'if-tgc t 1.o-rr 4,9MP67I.I1-11:). QQ Cl0 0 1 0 2 0 I 00 0 1 p 0 PARK1N(a 1-or G D Dt►I•1 fD r � M P I N-raiz1O(z FLAF4-ri hIC� 3 I E 0 0 1 MAY va1Z'1' FrzOM • I # I 12 Og. S. It-NE 2. Tree wells and planter areas within paved parking areas shall provide a minimum 4 foot clear planting space. 3. Planting areas shall have a 6 inch curb on all sides. #1;1. IN 01.4 rai....." wom„„ .40/4 fsw4 I aallIM.. mb . ,Rgat4,. (o'' BARE, Ak1Z.01.4I-4I P1.,A i NU A r--A 1 .2.5.b Parking and Pedestrian Circulation 1 . Parking location and layout should facilitate easy and safe pedestrian circulation. 2. If the parking layout is more than one row deep, walking space with a minimum width of 4 feet between stalls should be provided at key locations. 4i-rep, o o 4 ` � 2 AISLets 3. If parking lots exceed two rows in depth, the alignment of the aisles should be in the direction of the pedestrian movement. atiktH° '„ I,! ATE I - l DESTiz o4.t' imi 0„ /1ez:glaipt=g 44* O p.I SLR 2 / T 2AISLI`So2N'lp 1 .2.5.c Parking Lot Plant Materials List 1 . Tree species are to be selected from the following lists, unless special soil or site conditions prevent the use of the recommended trees. Tree Lists for Parking Compounds The following lists of trees have been selected to create a park-like appearance in the parking compound. Type A Trees: (End of Parking Column Planting) Plant Name Minimum Size Comments Acer platanoides 12' ht Limb to 6' minimum Acer rubrum 12' ht Limb to 6' minimum Acer pseudoplatanus 12' ht Limb to 6' minimum Liquidambar styraciflua 12' ht Limb to 6' minimum Tilia cordata 12' ht Limb to 6' minimum Liriodendron tulipifera 12' ht Limb.to 6' minimum Quercus coccinia 12' ht Limb to 6' minimum Quercus borealis 12' ht Limb to 6' minimum Fraxinus pennsylvanica 12' ht Limb to 6' minimum lanceolata Gleditsia triacanthos 12' ht Thornless varieties only, 'Skyline' , 'Shademaster' Type B Trees: (Interior Parking Lot Planting) Plant Name Minimum Size Comments Magnolia grandiflora 8' ht Limb to 411' minimum Styrax japonica 8' ht Limb to 42' minimum Pyrus calleryana 8' ht Limb to 42' minimum Crataegus lavallei 8' ht Limb to 42' minimum Crataegus phaenopyrum 8' ht Limb to 42' minimum Mallus floribunda 8' ht Limb to 42' minimum Cercidiphyllum japonicum 8' ht Limb to 411' minimum Prunus sargentii 8' ht Limb to 411' minimum Prunus serrulata 8' ht Limb to 41/2' minimum ' Kwanzan' Prunus subhirtella 8' ht Limb to 431' minimum 'Autumnalis' 1 .2.6 Vehicular Access Drive Design Guidelines 1 .2.6.a Location Criteria 1 . Access drives for ingress and egress shall be located by the Developer and/or User according to City of Renton standards. c:EFNia i I4/4;IImo.s-. ______ __ _ !..:::::::::. igip :::gi.','..':: _ Ft.... M.,..i.i:::::.:1:.,::.:;:::::11:::::::::::1:iii!i:..i::,:i::!::::::::::1; I IL. ti,RIVF-41,6%'r t '1' 1 .2.6.b Limited Use Area at Access Drives 1 . The "limited use area" is defined as the area extending 10 feet on either side of an access drive and in that area of the first 10 feet . extending from the curb line of the main roadway. ID' id r li\e.z.f4eJ. 1' 1. ;::.:.. O ,,!;!. ,,'',:',!::::::::::,,i _liZit=' 'Ift::::. LI M CfD LJ6 goikg la.Is woo No. ,s-rRt,.} kg! "n l Eifigm, Ns nol 2. All objects higher than 30 inches above the top of the curb at the access drive curb opening, including but not limited to, shrubs, . trees, signs and earth berms shall be located outside of the limited use area. 1 .2.7 Guidelines for Interior Property Lines and Landscape Areas 1 .2.7.a Side and Rear Yard Requirements 1 . A 5 foot wide minimum planting zone is to be provided continuously along and adjacent to all interior property lines. 2. All site drainage shall be directed away from the 5 foot zone. Drainage within the 5 foot zone may flow to an adjacent area. 3. A maximum slope of 2:1 is allowed within the 5 foot planting zone. A 1 foot minimum flat transition shall be provided at the top and bottom of all slopes within this zone. 1 .2.7.b Plant Material Requirements - Interior Property Lines 1 . Trees: Shall be located 4 feet from curbs or 1 foot from the property line. The trees selected for interior property lines must be species that have been used somewhere else on the User's property. (Refer to Section 1 .2.5.c for plant types.) 2. Shrubs: Shall be located 3 feet from the property line or 2 feet from curbs, and planted with a maximum spacing of 5 feet on center. 3. Groundcover: Shall be placed 24 inches on center maximum spacing, covering all ground surfaces. If the User selects lawn as a ground- cover, sod must be installed. 1 .2.7.c Planting and Irrigation Details and Specifications 1 . All planting and irrigation details and technical specifications shall conform to City of Renton, Washington Design Standards and the highest standards of the American Association of Nurserymen, the American Landscape Contractors Association, and the irrigation industry. 2. A one year guarantee against all defects of materials and workmanship for all planting and irrigation shall be provided for all landscape improvements identified herein. The guarantee shall include replace- ment of plants not in normal , healthy growing condition at the end of the guarantee period with same species and size. The guarantee period shall begin when the Developer and/or User, or their representatives have accepted the work as 100 percent complete. The Developer may by deed or lease, transfer this responsibility to a User. 1 .2.8 Guidelines for Tree Preservation Outside the "Preserve" Zone Trees selected for preservation shall have a "tree well " (fill retaining wall ) constructed to maintain an undisturbed existing ground area around the tree. Provide approximately 5 sq. ft. for each caliper inch of trunk measured at 48" above existing grade. The tree well shall be constructed in a manner to protect all roots. No root cutting allowed. Special care shall be taken to maintain ground water level and quality as nearly as possible to pre-development conditions. This may include special irriga- tion and drainage systems or culvert systems connecting the tree wells to nearby wetlands so that the rise and fall of ground water will be similar to pre-development conditions. Storm water may be retained on-site as necessary or desirable to assist in maintaining ground water levels. Tree wells shall be constructed of railroad ties (or treated timbers) with an 8 inch high curb of timber, concrete or asphalt on all sides. Provide hand rails where resultant depressions are more than 30 inches deep. Conditions may vary at each tree location. Analyze each tree to ascertain the best solution or combination of solutions to minimize adverse environ- mental impacts. Consult an Aborist regarding selection of trees to be preserved and preserva- tion procedures to be used. Selected trees are subject to review and approval by the City of Renton. HAI-1p RAIL. Ph R.R-Gal-II Rf=Ct PAVII-413 I.^1/4--1 Re — U Tfz1=� R. PLAF-JTII-.1 r3" GI.dRt3 -1ZETP.I t4'C� I41A tA_ ri.FILL • ` `> EXIST Es WET LA DRAPE N IDS P gas f=RVE) GI.ILVMIZT LiMDIS?URBED AREA I-4 rrE: GULVEIZT i AT at_EVATIci-4 t ' T R-t.i11-1ap J SITE , To A L Lo ItiI U IZo 1.41-4 F Ram AP.-I1›.4-F4-IT VJg-T1-064N1> PLatat I1-I- AND OI.4T Aks DESIGN GUIDELINES & CC&R's . DESIGN GUIDELINES & CC&R's BLACKRIVER TECHNOLOGY PARK Renton, Washington Q�` 0 C' Q'P J.A.G. / Renton Properties Associates, Developer Richard Carothers Associates , Planning Consultant July, 1984 Purpose The development of each site within Blackriver Technology Park is controlled and restricted by the Declaration of Covenants, Conditions and Restrictions for Blackriver Technology Park (hereinafter referred to as the "CC&R's") , as well as applicable governmental codes and regulations. The CC&R's are directed toward achieving the desired character and quality level of site development that will set Blackriver Technology Park apart from other business developments. The purpose of these Development Guidelines is to further define the requirements which are specifically and generally stated in the CC&R's. These Guidelines are intended in supplemented to the CC&R's as an aid in the submittal of plans for approval by providing more detailed information on which to base a review. Any specific conflicts between shall be brought to the immediate attention of J.A.G./Renton Properties Associates. In general , however the priority of com- pliance is first; with governmental codes and regulations, second; with the CC&R's and third; with the Design Guidelines. The Owners/Occupants of each site within Blackriver Technology Park should familiarize themselves with the intent and requirements of the CC&R's these Guidelines and all applicable governmental codes and regulations, and through their consultant(s), implement all those provisions applicable to their specific site developments. All development plans, landscaping plans and graphic designs, shall be submitted to a Design Review Committee as described in the CC&R's. Contents. Purpose 1.0 Introduction to Blackriver Technology Park 1.1 Location 1.2 Immediate Setting 1.3 Master Plan and Streetscape 1.4 Planning and Zoning 1.5 Flood Plain Restrictions 1.6 Engineering and Utilities 1.7 Permitted and Prohibited Uses 2.0 Approvals and Submittals 2.1 Master Plan Design Submittal 2.2 Preliminary Plan Submittal 2.3 Revision, Alteration, Addition or Change of Use Preliminary Plan Submittal 2.4 Institutional Review Process 3.0 Site Planning Guidelines 3.1 Building Site Coverage 3.2 Landscape Coverage 3.3 Building Heights 3.4 Street Setback 3.5 Interior Property Line Setback 3.6 Parking Requirements 3.7 Access and Drive Location 3.8 Sidewalks 3.9 Storage, Service, and Loading Areas 3.10 Refuse Collection Areas 3.11 Screening of Exterior Mechanical Equipment 3.12 Screening of Exterior Electrical Equipment 3.13 Fences and Walls 3.14 Utilities 3.15 Grading 3.16 Nuisances 4.0 Architectural Guidelines 5.0 Landscape Guidelines 5.1 Introduction to the Blackriver Technology Park Landscape Concept 5.1.1 Streetscape Zone 5.1.2 Streetscape Zone Design Concept 1 5.1.3 Interior Zone 5.1.4 Interior Zone Design Concept • 5.1.5 Grantor Provided Amenities 5.1.5a Exceptions 5.1.5b Entry Feature 5.1.5c The Commons 5.1.6 Other Requirements 5.2 Landscape Design Guidelines 5.2.1 Assessment District Installation and Maintenance Agreement 5.2.2 Maintenance of Unimproved Sites 5.2.3 Landscape Coverage 5.2.4 Street Frontage Zone Design Guidelines 5.2.4a Specific Design Limitation within the Street Frontage Zone 5.2.5 Parking Lot Landscape Requirements 5.2.5a Tree Planting Requirements 5.2.5b Parking and Pedestrian Circulation 5.2.5c Parking Lot Plant Material List 5.2.6 Vehicular Access Drive Design Guidelines 5.2.6.a Location Criteria 5.2.6b Limited Use Area at Primary and Secondary Access Drive 5.2.7 Guidelines for Interior Property Lines and Landscape Areas 5.2.7a Side and Rear Yard Requirements 5.2.7b Side and Rear Yard Landscape Requirements 5.2.7c Plant Material List-Interior Property Lines 5.2.7d Planting and Irrigation Details & Specifications 5.2.8 Guidelines for Exterior Property Lines 5.2.9 Guidelines for Tree Preservation Outside the 'Preserve' Zones 6.0 Signing Guidelines 6.1 Objectives 6.2 Sign Submittals 6.3 Detached Business Identification Stamps 6.4 Building Mounted Business or Building Identification Signs 6.5 Information and Vehicular Control Signs 6.6 Temporary Signs 7.0 Lighting Guidelines 7.1 Objectives 7.2 Lighting Quality 7.3 Parking, Access and Circulation Areas 7.4 Service Areas 7.5 Building Illuminations 7.6 Pedestrian Areas 8.0 Appendix Contact and Reference List Planning and Design References Declaration of Covenants, Conditions and Restrictions 1 .0 Introduction to Blackriver. Technology Park Blackriver Technology Park is to become a unique business community distinguished from other Seattle Area business parks. The distinction of Blackriver Technology Park begins with its concept as a series of small business sites situated in a controlled, unified landscape setting. This conception will be furthered through an emphasis on quality contemporary site, architectural and landscape design. 1.1 LOCATION Blackriver Technology Park is centrally situated southeast of downtown Renton and due north of I-405, contiguous to and immediately north of Washington Technical Center. Access via I-405 and arterials now serving Earlington Park Industrial Area. 1.2 IMMEDIATE SETTING Blackriver Technology Park is bordered on the north by the Burlington Northern Railroad right-of-way, on the south by Washington Technical Center and P-I Channel detention basin. Preserve areas and City of Renton buffer zones provide a wooded backdrop conducive to the development of a pleasant business environment. 1.3 MASTER PLAN AND STREETSCAPE The Blackriver Technology Park Plan is organized around a broad, two lane, central cul-de-sac serving most of the sites within Blackriver Technology Park. This • central collector is Southwest 4th Place. Southwest 4th Place, will have a controlled landscaped easement along both sides which will establish a unified, park-like environment, distinctive among business parks in th.e Pacific Northwest. Intersections leading into the Park will be highlighted by landscape and graphic design features to establish these locations as gateways to the Park. Recreational opportunites will be available in the form of walking and jogging paths integrated with landscape parkways and providing access into undeveloped buffer and preserve areas. 1.4 PLANNING AND ZONING Blackriver Technology Park is located within the jurisdiction of the City of Renton Department of Planning, Public Works, Engineering and Parks. 1.5 FLOOD PLAIN RESTRICTIONS Blackriver Technology Park lies within the 100 year floodplain of the Black River. Site planning, grading and drainage design constraints, will be placed upon all developments. All development within Blackriver Technology Park must conform to grading and drainage restrictions contained in the Blackriver Technology Park Design Guidelines as well as on-site planning, grading and drainage guidelines administered by the City of Renton. . 1.6 ENGINEERING AND UTILITIES Assessment district landscaping, street improvements, and underground utilities including domestic water, fire service systems, storm drainage, sanitary sewer, and street lighting, telephone, electrial and natural gas mains have been install- ed by J.A.G./Renton Properties Associates. The improvement designs were prepared by Richard Carothers Associates, Seattle. 1.7 PERMITTED AND PROHIBITED USES In order to achieve the objective of Blackriver Technology Park as a high quality business environment the CC&R's identify uses that are permitted and prohibited within City of Renton. The following, outlines the objectives related to permit- ted and prohibited uses within Blackriver Technology Park and restates those uses contained in the CC&R's. Objectives 1. to permit business uses whose facility developments and maintenance will contribute to the perception of Blackriver Technology Park as a series of high quality business sites. • 2. to permit business uses which do not, through their operation, produce objectional visual , sound, smell , or vibrational outputs 3. to permit business uses which are compatible with one another and compatible with existing or planned uses surrounding Blackriver Technology Park 4. to permit business uses which will not create excessive burdens upon Black- river Technology Park transportation and utility systems Guidelines 1. Prohibited Uses - The following operations and uses shall not be permitted on any parcel within Blackriver Technology Park: (a) Residential use of any type; (b) Trailer courts or recreation vehicle campgrounds; (c) Junk yards or recycling facilities; (d). Drilling and removing oil , gas or other hydrocarbon substances, or drilling for or removing such hydrocarbons; (e) Refining of petroleum or of its products; (f) Petroleum storage yards; (g) Commercial excavation of building or construction materials; provided, that this prohibition shall not be construed to prohibit any excavation necessary in the course of approved construction pursuant to Article III of CC&R's; (h) Distillation of bones; (i) Dumping, disposal , incineration or reduction of garbage, sewage, offal , dead animals or other refuse; (j) Fat rendering; (k) Stockyard or slaughter of animals; (1 ) Smelting of iron, tin, zinc or any other ore or ores; (m) Cemeteries; (n) Jail or honor farms; (o) Labor or migrant worker camps; (p) Truck terminals; (q) Automobile, go-cart, motorcycle or quarter-midget race tracks and other vehicle endurance or race track; 2. Permitted Uses - Any use or business operation permitted by the current City of Renton Zoning Ordinance that is not specifically prohibited above, provided such use is specifically approved in writing by J.A.G./Renton Properties Associ- ates. J.A.G/Renton Properties Associates, however, reserves the right to refuse any use which they conclude may adversely affect Blackriver Technology Park. An approved use shall be performed or carried out entirely within a building that is so designed and constructed that the enclosed operations and uses do not cause or produce a nuisance to adjacent lots or streets such as, but not limited to, vibration, sound, electromechanical disturbances, radiation, air or water pol- lution, dust, or emission of odorous, toxic or non-toxic matter including steam. Certain activities which cannot be carried on within building may be permitted, provided such activities are specifically approved in writing by J.A.G./Renton Properties Associates and further provided such activities are screened in an acceptable manner so as not to be visible from neighboring lots and streets.. 2.0 Approvals and Submittals In order to insure that the design standards for Blackriver Technology Park contained in these guidelines are achieved, a series of plan submissions will be required at different stages of the design process. The number of plan submis- sions will vary depending upon the complexity and timing of a proposed develop- ment. Plan submissions will also be required for significant revisions, altera- tions, additions, or change of use for approved or existing developments within Blackriver Technology Park. Required plan submissions shall be submitted to the Blackriver Technology Park Design Review Committee, J.A.G./Renton Properties Associates care of Alterra Corporation, General Partner. Each stage of plan submission will require four (4) sets of plans containing the specific information described below. A Design Review Committee will be established by J.A.G./Renton Properties Associ- ates to review all required plan submissions. All submitted plans will be reviewed by the Blackriver Technology Park Design Review Committee for acceptability of design in compliance with the CC&R's and these Design Guidelines. Upon completion of review by the Design Review Committee, one set of submitted plans will be returned to the applicant along with a letter summarizing comments, recommenda- tions, requirements and findings. The length of review by the Blackriver Techno- logy Park Design Review Committee for all stages of plan submissions shall be governed by Section 5 of the Blackriver Technology Park CC&R's. The returned plans will be marked "Approved" or "Approved Subject to Conditions" or "Not Approved" with the following intended meanings: 1. "Approved" - approved documents permit the applicant to proceed to the next stage of the approval process. 2. "Approved Subject to Conditions" - documents so marked permit the applicant to proceed to the next stage of the approval process provided the applicant complies with the conditions specified by the Design Review Committee. If the applicant takes exception to the specified conditions, the applicant must do so in writing by certified mail addressed to J.A.G./Renton Properties Associates within ten (10) days from the date of the applicant's receipt of returned documents. Unless such action is taken, J.A.G./Renton Properties Associates will assume that all conditions are acceptable to and approved by the applicant. 3. "Not Approved" - documents will be returned to the applicant with comments describing the basis for disapproval . Revised documents must be resubmitted if approval is sought. 4. J.A.G./Renton Properties Associates' approval of the applicant's plans, specifications, calculations, or work shall not constitute an implication, representation, or certification by J.A.G./Renton Properties Associates that the above items are in compliance with applicable Statues, Codes, Ordinances or other regulations. The Blackriver Technology Park Design Guidelines are in no way intended to super- sede any applicable Statutes, Codes, Ordinances or regulations of controlling governmental jurisdictions. Should any portions of the Blackriver Technology Park CC&R's or Design Guidelines be discovered to encourage violation of applicable Statutes, Codes, Ordinances or other governmental regulations, those discrepancies should be brought to the immediate attention of J.A.G./Renton Properties Associ- ates. The applicant shall have the sole responsibility for compliance with all appli- cable Statutes, Codes, Ordinances or other regulations for all work performed on the premises by or on behalf of the applicant. 2.1 BLACKRIVER TECHNOLOGY PARK MASTER PLAN DESIGN SUBMITTAL Submission of a site Master Plan will be required only when the ultimate site . development is planned to be constructed in separate phases over a period of time. The site Master Plan is to be submitted and approved before Preliminary Plans are submitted. Master Plan submissions shall show an indication of: 1. All major buildings and structures including: a. building footprints b. overhangs c. net floor area d. site coverage - building-ground contact area/net lot area e. building coverage - area of all floors/net lot area f. a brief description of the .use of each building or structure including an estimate of the number of employees 2. Parking Area a. configuration of parking and vehicular circulation including employee and guest parking b. dimensions of typical parking stalls and parking aisles c. total parking provided d. calculation demonstrating total parking required 3. Loading and Service Areas a. truck service and loading dock areas b. truck and service vehicle circulation areas c. trash enclosure areas d. location of screening devices for truck and service areas 4. Landscape and Pedestrian circulation concept including any major site design features 5. Interfaces with off-site circulation including the location and design of all access drive curb cuts 6. Interfaces with adjacent properties 7. Conceptual grading, drainage and utilities 8. Descriptions or sketches of the architectural design concept including intended character and materials 9. Phasing Plans - plans indicating the phasing of the ultimate Master Plan development illustrating the extent of development at the completion of each phase While the above information is required for all Master Plan submissions, it would be desirable for applicants to utilize all available presentation materials and media in order to fully communicate the intent and design character to the Design Review Committee. 2.2 BLACKRIVER TECHNOLOGY PARK PRELIMINARY PLAN SUBMITTAL The Preliminary Plan submission is required to convey specific information about the site planning and architecture of the proposed development. The Preliminary Plan package should be submitted to the Design Review Committee prior to or concurrent with submission of plans to the City of Renton for Site Development Review, Preliminary Plans are to be submitted and approved before construction documents are submitted. The Preliminary Plan submission requires each of the following exhibits: 1. Site Plan indicating the following: a. building footprints and dimensions to property lines b. building roof overhangs c. configuration of parking and vehicular circulation areas d. location of parking lot electrollers e. truck service, loading area, trash enclosures f. lines of setback and easements g. locations of on-site transformers, electrical switch gear, and gas meters h. adjacent roadways including curblines, medians and median openings i. tabulation of: I. Parcel Area II. Total Building Floor Area III. Site Coverage IV. Building Coverage V. Total Parking Provided VI. Total Parking Required VII. Estimated total employees on site at any peak time VIII The anticipated number of shifts and the hours and days of their operation 2. Conceptual Grading and Drainage Plan indicating: a. proposed finish grades, slopes and building pad elevations b. site drainage structures and systems c. grades of existing streets and curbs d. locations of street lighting and utility structures within landscape easement 3. Conceptual Landscape Plan indicating: a. plant materials, sizes, and spacings b. walkways and paved areas c. other landscape design features 4. Building Elevations of all sides of all proposed buildings indicating: a. wall and roof materials, textures, and colors b. locations of wall mounted signing and lighting c. roof and parapet heights above ground floor line d. the profile of any roof mounted mechanical equipment which extends above the roof parapet 5. Building Floor Plans 6. Building Roof Plans indicating: a. roof elevations above finish floor b. heights and locations of roof mounted mechanical equipment where available • 7. Outline Specifications of all building materials 8. Conceptual Graphics and Wall Mounted Signs a. ground signs and wall mounted signs I. locations II. designs, materials, textures, colors, 'heights, areas III. Illumination IV. typography b. directional and information signs I. locations II. designs, materials, textures, colors, heights, areas III. illumination IV. typography 2.3 BLACKRIVER TECHNOLOGY PARK REVISION, ALTERATION, ADDITION OR CHANGE OF USE PRELIMINARY PLAN SUBMITTAL Preliminary plans are required to be submitted for any significant revisions, alterations, additions or change of use to approved or existing developments within Blackriver Technology Park. Preliminary plans for this purpose must be submitted and approved before construction documents are submitted and before the commencement of construction. Revision, Alterations, Additions or Change of Use require the submission of four (4) sets of documents including: 1. A written description of the nature and extent of the proposed revision, alteration, addition or change of use to be undertaken. 2. Indications of proposed revisions, alterations, additions or changes to: a. the site plan b. the grading and drainage plan c. the landscape plan d. the building elevations including I. wall and roof materials, textures and colors II. locations of wall mounted signing and lighting III. roof and parapet heights above the ground floor line IV. the profile of any roof mounted mechanical equipment which extends above the roof parapet e. the building floor plans 3. Tabulations of: a. the new total building floor area b. the new site coverage c. the new building coverage d. the new parking provided e. calculations demonstrating the new required parking f. the new estimated peak employee count 4. Outline specifications of construction materials. 2.4 INSTITUTIONAL REVIEW PROCESS In the course of designing proposed developments for lots within Blackriver Technology Park additional reviews and approvals will be required beyond the Blackriver Technology Park Design Review Process. The following summary of Blackriver Technology Park and other review and approval processes is included to assist individual applicants in understanding the approximate nature and sequence of those reviews. An understanding of the total review process from the outset, it is hoped, will contribute to smoother and more efficient processing of each proposed development. 1. The design process should begin with a review of the Blackriver Technology Park, CC&R's and Design Guidelines, the City of Renton Guidelines, and the applicable sections of the current City of Renton Zoning Ordinance. Copies of the City of Renton applications and submission requirements should also be obtained at this time. 2. Prior to commencement of design, a licensed civil engineer should be consult- ed as to grading and drainage restrictions in the City of Renton. 3. Master plan should be submitted to and approved by the Blackriver Technology Park Design Review Committee. 4. Applicants should review master plans with the City of Renton Planning Department and staff, for comments. This is not a required review but it may help to avoid problems and duplication of work. 5. Master plans should be reviewed by a licensed civil engineer for compliance with City of Renton grading and drainage restrictions. 6. Preliminary plan should be submitted to and approved by the Blackriver Technology Park Design Review Committee. 7. Preliminary plans should be reviewed by a licensed civil engineer for compliance with City of Renton grading and drainage restrictions. 8. Preliminary plans should be reviewed with the City of Renton planning and public works staff several weeks prior to the intended submission for Site Development Review. 9. Submit plans to the City of Renton for Site Plan Approval . 10. Submit plans for building department plan check. 3.0 Site Planning Guidelines 3.1 BUILDING SITE COVERAGE Objectives 1. to insure that the intensity of site development is not excessive or detri- mental to the perception of Blackriver Technology Park as a unified series of high quality business sites 2. to insure that the intensity of site development does not over-tax utility or transportation systems Guidelines 1. Site coverage (defined as the building-ground contact area divided by the total net lot area) shall not exceed 50% or the amount specified in the current City of Renton Zoning Ordinance (whichever is the more restrictive. 2. Building coverage (defined as the total area of all floors divided by the total net lot area) shall not exceed 60% unless otherwise approved in writing by J.A.G./Renton Properties Associates. 3.2 LANDSCAPE COVERAGE Objectives 1. to insure that at least a minimum portion of a development site is devoted to landscape materials in order to maintain a sense of continuity with adjacent sites and to contribute to the perception of Blackriver Technology Park as a "park-like" environment. 2. to insure that at least a minimum of landscape materials are available on a development site in order to contribute to the environmental well being of potential users' of each site. Guidelines 1. A minimum of at least 15% of the area within the property lines of a develop- ment site (exclusive of the Landscape Easement Transition Zone) shall be devoted to landscape materials unless otherwise approved in writing by J.A.G./Renton Properties Associates (for additional landscape requirements see Landscape Guidelines Section 5.0) 3.3 BUILDING HEIGHTS Objectives 1. to maintain a reasonably consistent and compatible height profile throughout Blackriver Technology Park Guidelines 1. Building heights shall conform to City of Renton Building Regulations #4-730.060. 3.4 STREET SETBACK Objectives 1. to achieve a feeling of openness along the streets that reinforces the perception of Blackriver Technology Park as a series of high quality business sites 2. to encourage some regularity of space formed by buildings on either side of a street 3. to achieve a landscaped setting between the street and buildings 4. to provide for a street-side edge which will have a landscape character that will unify the total development and be sufficiently distinctive in design to differentiate Blackriver Technology Park from other business developments 5. to provide vehicular sight lines which allow discrimination of one company from another 6. to provide vehicular sight lines which allow safe ingress and egress to properties and safe movements along roadways 7. to accommodate major Blackriver Technology Park identity statements at street intersections leading into, and within the Park Guidelines 1. No building or parking shall be permitted to be constructed closer than thirty-five (35) feet from the property line along Southwest 4th Street. Planters, walls, sign elements not exceeding 3'-0" in height may be permitted in street-side setback areas with written approval of J.A.G./Renton Propert- ies Associates. Roof overhangs may extend a maximum of 6'-0" into setback areas. 2. The first 8 to 19 feet of street-side landscaping (from back of curb) including sidewalk,will be installed by J.A.G./Renton Properties Assoicates as a landscape easement, and shall remain unaltered, except for access drives, unless alterations are approved in writing by J.A.G./Renton Proper- ties Associates. 3. The remaining setback area shall be fully landscaped by the Owner/Occupant in a manner both compatible with and complimentary to the landscape easements, (refer to Landscape Guidelines). 3.5 INTERIOR PROPERTY LINE SETBACK Objectives 1. to provide a definite physical separation between buildings on adjoining lots suitable for distinguishing separation of responsibilities 2. to allow companies on adjoining lots to be individually identifiable Guidelines 1. No building shall be permitted to be constructed closer than ten (10) feet from an interior property line. 2. No parking, other than automobile overhangs, shall be permitted to be con- structed closer than five (5) feet from an interior property line, unless otherwise approved in writing by J.A.G./Renton Properties Associates. 3. All setback areas shall be fully landscaped in a manner both compatible with and complimentary to the on-site architecture and landscape design concepts. 3.6 PARKING REQUIREMENTS Objectives 1. to provide sufficient on-site parking to accommodate all vehicles associated with the use of each lot at any one time, and therefore not require vehicles to be parked on public roadways or on lots of other companies 2. to configure parking areas such that they contribute to an increase of the ratio of on-site persons to on-site vehicles Guidelines 1. On-site parking shall be provided in a ratio of one space per 250 square feet or less of net building area unless otherwise approved by J.A.G./Renton Properties Associates. 2. Standard parking stalls shall be a minimum of 9 feet by 19 feet with a 2i foot reduction permitted for vehicle front overhangs. 3. Compact parking stalls shall not exceed forty (40) percent of the total parking and shall be a minimum of 81 feet by 17 feet with a 2 foot reduction permitted for vehicle front overhangs. 4. In addition to the parking required above, one designated parking space shall be provided for each company vehicle to be parked on-site during normal working hours. Parking spaces for company vehicles shall be of a size, area and configuration that the company vehicles can be parked such that they are fully contained within their designated spaces. 5. Designated "Handicap Parking" spaces, 12 feet in width, shall be provided at a ratio of one stall per 5.0 parking stalls. Such parking spaces shall be give preferential locations near building entrances which provide full and convenient handicap access. 6. Should businesses locating on a Blackriver Technology Park development site wish to encourage the formation of car pools by their employees, considera- tion should be given to designating reserved "Car Pool" parking spaces. Designated "Car Pool" spaces should be given preferential locations in relatively close proximity to primary employee building entrances. 7. Designated "Cycle Parking" areas should be considered for the convenience of employees using bicycles or motorcycles. In order to avoid the clutter of cycles parked in unplanned locations, it is recommended that planned "Cycle Parking" areas be conveniently located to employee entrances and be provided with racks having security locking capabilities. 3.7 ACCESS AND DRIVE LOCATION Objectives 1. to have access drives located such that vehicular traffic arriving at and leaving from lots, as well as traffic passing continuously in streets, flow at an optimum level of efficiency 2. that the continuity of street-side landscaping is minimally disrupted by the construction of access drives 3. that utilities located in the landscape easement are not or are minimally disrupted by the construction of access drives Guidelines 1. Access drives on Southwest 4th Place should be aligned with regularly spaced median breaks and low points in Landscape Easement earth mounding. Curb openings aligned with regularly spaced median breaks will be permitted only if the opposite side of the street has no planned curb openings. All curb openings not aligned with regularly spaced median breaks shall be designed for "right-turn-only" ingress and egress. 2. Access drives on Southwest 4th Place should be coordinated with planned and existing median openings and where median openings are not available, designed for efficient "right-turn-only" ingress and egress. 3. Access drives should be coordinated with adjacent lots so as not to impede the efficient flow of peak period traffic. Consideration should be given to adequate separation of adjacent access drives or the development of common access drives. 4. Access drive designs should incorporate provisions for efficient vehicle stacking during peak periods of use. 5. Access drives should be located such that their construction results in a minimal disruption of the street side landscaping and utilities located within the designated landscape easement. 6. No access drives will be permitted directly off of at any point east of its intersection with 3.8 SIDEWALKS Objectives 1. to provide a safe (separated from vehicles all weather efficient and aesthet- ically pleasing means of pedestrian circulation connecting lots along the streetside perimeter 2. to provide a safe (separated from vehicles), all weather efficient and aesthetically pleasing means of pedestrian circulation serving each site, including connecting parking areas with building entries, connecting build- ings to one another, and connecting building entries with on-site amenities Guidelines 1. Streetside sidewalks will be installed by the developer within perimeter landscape easements. 2. On-site pedestrian circulation systems shall be provided to meet the circul- ation needs of on-site users. Such systems should provide safe, all weather efficient, and aesthetically pleasing means of on-site movement and should be an integrated part of the overall architectural and site design concept. 3. Where usage dictates, connections should be made between on-site and perime- ter pedestrian circulation systems. 3.9 STORAGE, SERVICE, AND LOADING AREAS Objectives 1. to insure that storage, service and loading areas are not visible from primary visual exposure areas (streets, primary image entry drives, floors of image buildings, common visual and recreational amenity areas, etc. ) 2. to insure that storage, service and ,loading areas are located upon a site so as to minimize the visibility of loading and service vehicles from primary visual exposure areas 3. to insure that the storage, service and loading areas are designed and located on the site so that service vehicle activities and movements do not disrupt the efficient flowof on-site and off-site traffic Guidelines 1. Storage, service; maintenance and loading areas must be constructed, main- tained and used in accordance with the following conditions: a. Unless approved in writing by J.A.G./Renton Properties Associates, no materials, supplies, or equipment, including trucks or other motor vehicles, shall be stored upon a site except inside a closed building or behind a visual barrier screening such materials, supplies or vehicles from adjacent sites so as not to be visible from neighboring properties and streets. Any storage areas screened by visual barriers shall be located upon the rear portions of a site, unless otherwise approved in writing by J.A.G./Renton Properties Associates. No storage areas may extend into a setback area except with the written approval of J.A.G./Renton Properties Associates. b. Provisions shall be made on each site for any necessary vehicle loading and no on-street vehicle loading shall be permitted. c. Loading dock areas shall be set back, recessed or screened so as not to be visible from adjacent lots, or sites, neighboring properties, or streets, and in no event shall a loading dock be closer than seventy- five (75) feet from a property line fronting upon a street unless otherwise approved in writing from J.A.G./Renton Properties Associates. 3.10 REFUSE COLLECTION AREAS Objectives 1. to insure that refuse and refuse containers are not visible from primary visual exposure areas (streets, primary image entry drives, floors of image buildings, common visual and recreational amenity areas, etc. ) 2. to insure that refuse enclosures are effectively designed to receive and contain generated refuse until collected, and enclose refuse containers after refuse is collected 3. to insure that refuse collection vehicles have clear and convenient access to refuse' collection areas and thereby not contribute to excessive wear-and-tear to on-site and off-site developments Guidelines 1. All outdoor refuse containers shall be visually screened within a durable 6'-o" or higher non-combustible enclosure, so as not to be visible from adjacent lots or sites, neighboring properties or streets. No refuse collec- tion areas shall be permitted between a street and the front of a building. 2. Refuse collection areas should be effectively designed to contain all refuse . generated on-site and deposited between collections. Deposited refuse should not be visible from outside the refuse enclosure. 3. Refuse collection enclosures should be designed of durable materials with finishes and colors which are unified and harmonious with the overall archi- tectural theme. 4. Refuse collection areas should be so located upon the lot as to provide clear and convenient access to refuse collection vehicles and thereby minimize wear-and-tear to on-site and off-site developments. 5. Refuse collection areas should be designed and located on the lot so as to be convenient for the deposition of refuse generated on-site. 3.11 SCREENING OF EXTERIOR MECHANICAL EQUIPMENT Objectives 1. to have all exterior components of plumbing, processing, heating, cooling and ventilating systems not be directly visible from within the lot or from adjoining streets, lots or buildings. Guidelines • 1. Exterior components of plumbing, processing, heating, cooling, and ventila- ting systems (including but not limited to piping, tanks, stacks, collectors, heating, cooling, and ventilating equipment fans, blowers, ductwork, vents, louvers, meters, compressors, motors, incinerators, ovens, etc. ) , shall not be directly visible from a height of 5'-0" above any ground or ground floor elevation at a distance closer than 200 feet from the closest building wall on any lot, unless such components are an integral part of the building exterior design concept and approved in writing by J.A.G./Renton Properties Associates. 2. It is recommended that in the case of roof mounted mechanical equipment, that building parapets be of such a height that roof mounted screening devices not be required. If building parapets do not provide the required screening, mechanical equipment shall be screened by an unobtrusive screening device that will appear as an integrated part of the overall architectural design. 3. Any devices employed to screen exterior components of plumbing, processing, heating, cooling, and ventilating systems from direct view shall appear as an integrated park of the architectural design, and as such, be constructed of complimentary and durable materials and finished in a complimentary texture and color scheme to the overall architectural design. 4. Any exterior components of plumbing, processing, heating, cooling and ventilating systems and their screening devices, that will be visible from upper floors of adjacent buildings shall be kept to a visible minimum, shall be installed in a neat and compact fashion, and shall be painted such a color as to allow their blending with their visual background. 5. No exterior components of plumbing, processing, heating, cooling, and ventil- ating systems shall be mounted on any building wall unless they are an integrated architectural design feature, and in any case shall be permitted only with the written approval of J.A.G./Renton Properties Associates. 3.12 SCREENING OF EXTERIOR ELECTRICAL EQUIPMENT AND TRANSFORMERS Objectives 1. to minimize the visibility of exterior electrical equipment and transformers • from primary visual exposure areas (streets, primary image entry drives, floors of image buildings, and common visual and recreational amenity areas, etc. ) Guidelines 1. Transformers that may be visible from any primary visual 'exposure area shall be screened with either planting or a durable non-combustible enclosure (of a design configuration acceptable to Puget Sound Power and Light). Where possible, it is recommended that refuse containers and transformers be integrated into the same enclosure. 2. Transformer enclosures should be designed of durable materials with finishes and colors which are unified and harmonious with the overall architectural theme. 3. Exterior mounted electrical equipment shall be mounted on the interior of a building wherever possible. When interior mounting is not practical , elect- rical equipment shall be mounted in a location where it is substantially screened from public view. In no case shall exterior electrical equipment be mounted on the street-side or primary exposure side of any building. 4. Exterior mounted electrical equipment and conduits shall be kept to a visible minimum, where visible shall be installed in a neat and orderly fashion, and shall be painted to blend with its mounting background. 3.13 FENCES AND WALLS Objectives 1. to permit the installation of fences and walls within a lot for the purpose of site security, sound attenuation, separation of functional activities, and screening of unsightly functions and activities 2. to have fences and walls installed such that they are as inconspicuous as possible or designed as an integrated and complimentary architectural design element adding interest to the overall architectural design concept 3. . to have no walls or fences reduce the intended quality of development or reduce the perception of Blackriver Technology Park as a series of high quality business sites 4. to discourage the construction of walls and fences except as necessary to screen outside storage, loading and service areas 5. to insure that fences and walls do not, because of their height, location, or design, contribute to a decrease in the safety or efficiency of traffic flows on-site or in fronting streets Guidelines 1. No fence or wall shall be constructed closer than thirty (30) feet from the curbline of a fronting street unless it is of a height not to exceed 3'-0". 2. No fence or wall shall exceed a height of 8'-0" unless otherwise approved in writing by J.A.G./Renton Properties Associates. 3. Walls and fences between buildings and fronting streets are discouraged, but when necessary shall require written approval by J.A.G./Renton Properties Associates. 4. All fences and walls shall be designed as an integrated part of the overall architectural and site design. All materials shall be durable and finished in textures and colors complimentary of the overall architectural design. 5. Where chain link fencing is to be employed, it shall be of a dark color and be largely hidden behind plant materials and or earth mounding. 3.14 UTILITIES AND COMMUNICATION DEVICES • Objectives 1. to have the entire Blackriver Technology Park visually free of unsightly overhead power and telephone lines, utility poles, and other utility and communication equipment and components 2. to protect off-site utility systems from becoming over-burdened by individual lot utility systems 3. to achieve minimum disruption of off-site utilities, paving and landscape during construction and maintenance of on-site utility systems Guidelines 1. All exterior on-site utilities including, but not limited to, drainage systems, sewers, gas lines, water lines, and electrical , telephone, and communications wires and equipment shall be installed and maintained under- ground. 2. On-site underground utilities shall be designed and installed to minimize the disruption of off-site utilities, paving and landscape during construction and maintenance and shall be of such a design so as not to place excessive burdens upon off-site utility systems during the course of use. 3. No antenna or device for transmission or reception of any signals, including, but not limited to, telephone, television, and radio, shall be placed on any lot so that it is visible from 5'-0" above the ground or ground floor level at a distance of 500 feet in any direction, unless specific written approval is granted by J.A.G./Renton Properties Associates. 4. Temporary overhead power and telephone facilities are permitted during construction. 3.15 GRADING Objectives 1. to encourage site design which protects buildings and business activities from damage or disruption that might otherwise occur during extreme storm conditions. 2. to encourage site design which protects buildings and business activities from damage or disruption during extreme storm conditions 3. to allow precipitation falling on site and surface water flowing from ad- jacent sites to be effectively absorbed or to drain off the site without causing excessive water concentrations on adjacent sites or streets 4. to have site grading compliment and reinforce the overall architectural and landscape design character Guidelines 1. All building first floor elevations shall be approximately one and one-half feet (1/) to two and one-half (2/) feet above the flow line of adjacent streets (specific pad elevations and on-site drainage plans should be estab- lished by the project consultant). 2. Site grading design should compliment and reinforce the architectural and landscape design character by helping to screen parking, loading and service areas, by helping to reduce the perception of height and mass on larger buildings, by providing reasonable transitions between on-site uses, by providing elevation transitions contributing to the efficiency of on-site and off-site movement systems, and by providing reasonable transitions between lots. 3.16 NUISANCES Objectives 1. to insure that no portion of Blackriver Technology Park is used in such a manner as to create a nuisance to adjacent sites or streets such as, but not limited to, vibration, sound, electro-mechanical disturbance and radiation, electro-magnetic disturbance, radiation, air or water.pollution, dust, emission of odorous, toxic or noxious matter Guidelines 1. No nuisance shall be permitted to exist or operate upon any lot or site so as to be offensive or detrimental to any adjacent lot or site or neighboring property or to its occupants. A "nuisance" shall include, but not be limited to, any of the following conditions: (a) Any use of the lot or site which emits dust, sweepings, dirt or cinders into the atmosphere, or discharges liquid runoff and discharge into river, which in the opinion of J.A.G./Renton Properties Associates, may' adversely affect the health, safety, or comfort of persons within the area or the intended use of their property. No waste nor any substance or materials of any kind shall be discharged into any public sewer serving the subject property or any part thereof in violation of any regulation of any public body having jurisdiction over such public sewer; (b) The escape or discharge of any fumes, odors, gases, vapors, steam, acids or other substance into the atmosphere which discharge, in the opinion of J.A.G./Renton Property Associates, may be detrimental to the health, safety or welfare of any person or may interfere with the comfort of persons within the area or which may be harmful to property or vegetation; (c) The radiation or discharge of intense glare or heat or atomic, electro-magnetic, microwave, ultrasonic, laser or other radiation. Any operation producing intense glare or heat or such other radiation shall be performed only within an enclosed or screened area and then only in such manner that the glare, or heat or radiation emitted will not be discernible from any point exterior to the site or lot upon which the operation is conducted; (d) Excessive noise. At no point outside of any lot plane shall the sound pressure level of any machine, device, or any combination of same, from any individual plant or operation, exceed the decibel levels in the designated preferred octave bands as follows: Octave Band Maximum Sound Pressure Levels Center Frequency (db) at Boundary Plane of Lot 31.5 78 63 72 125 65 250 59 500 55 1000 52 2000 50 4000 48 8000 47 A-scale levels for monitoring purposes are equivalent to 60db(A). The maximum permissible noise levels for the octave bands shown above are equal to an NC-50 Boise Criterion curve when plotted on the preferred frequency scale. Reasonable noise from motor vehicles and other transportation facilities are exempted, so long as the vehicles or other transportation facilities are not continuously on the subject property. The operation of signaling devices and other equipment having impulsive or non-continuous sound characteristics shall have the following correc- tions applied: Corrections Pure Tone Content - 5db Impulsive Character - 5db Duration for Non-Continuous Sounds in Daytime Only: 1 min/hr + 5db 10 sec/10 min + 10db 2 sec/10 min + 15 db The reference level for the db values listed above is the pressure of 0.00002 microbar or 0.0002 dyne/cm2 (e) Excessive emissions of smoke, steam or particulate matter. Visible emissions of smoke or steam will not be permitted (outside any building) . which exceed Ringlemann No. 1 on The Ringlemann Chart of the United States Bureau of Mines. This requirement shall also be applied to the disposal of trash and waste materials. Wind-borne dust, sprays and mists originating in plants are not permitted. (f) Ground vibration. Buildings and other structures shall be constructed, and machinery and equipment installed, and insulated on each lot or site so that the ground vibration inherently and recurrently generated is not perceptible without instruments at any point exterior to any lot or site. 4.0 - Architectural Guidelines Objectives 1. to encourage high quality, contemporary architectural design of all facil- ities to be constructed within Blackriver Technology Park, thus allowing Blackriver Technology Park to be positively differentiated from other bus- iness parks 2. to encourage businesses located within Blackriver Technology Park to express themselves individually through the architectural design of their facilities Guidelines 1. All design shall appear as an integrated part of an overall site design. 2. No "Period Buildings" shall be permitted. Contemporary building forms and materials will be encouraged. 3. Pre-engineered metal buildings will not be permitted. Metal-clad buildings will be permitted only if designed by an architect and only if specifically approved in writing by J.A.G./Renton Properties Associates. 4. Design consideration should be given to: a. views and vistas b. solar orientation and climate c. orientation toward major streets and thoroughfares d. vehicular and pedestrian flows e. the character of surrounding developments f. expressions of a facility's functional organization g. expressions of the individual character of each business h. the satisfaction of physical , psychological , social and functional needs of facility users i . energy conservation through facility design j. potential environmental hazards k. enhancement of the overall landscape 5. Consideration should be given to the incorporation of design features such as: a. highlighted visitor entrance and entry plazas b. focal theme towers c. enriched employee lunch areas d. employee recreational facilities e. accent lighting f. atriums and interior courts g. dynamic building and roof forms h. striking window patterns i . light and shadow patterns j. color accents Refer to Site Planning Guidelines and Landscape Guidelines for other design features. 5.0 Landscape Guidelines The landscape consists of elements that give form to exterior spaces. Thus, the character of the landscape is created by major functional elements such as project entrances, parking lots, buildings, service areas, signing, site lighting, walkways, and the arrangement of plant materials. Given that project architecture and building sites within Blackriver Technology Park will most likely be of varying types and sizes, landscaping as a design element will play the key role in creating and conveying the overall character of Blackriver Technology Park as a "park-like" working environment. The purpose, then, of these Landscape Guidelines, is to provide design criteria which will help to insure that Blackriver Technology Park achieves an image that is distinctive, clearly understandable and unified. 5.1 INTRODUCTION TO THE BLACKRIVER TECHNOLOGY PARK LANDSCAPE CONCEPT As a part of Blackriver Technology Park Master Plan, hereinafter referred to as Blackriver Technology Park, a Concept Master Plan has been conceived to organize, unify and create a distinctive character for the whole of the development. The Concept Master Plan recognizes that Blackriver Technology Park consists of two prominent zones, namely, the 'Streetscape Zone' and the ' Interior Zone' . An understanding of the nature of these two zones is important to understanding the landscape guidelines and their intent. 5.1.1 Streetscape Zone The streetscape zone is the primary image setting zone on. either side of Southwest 4th Place. All improvements within this corridor will have the greatest degree of control . Attributes within this zone include: 1 . The Landscape Easement - This easement begins at the back of the curb and extends inward for a distance of 30 feet along the entire street. The first 13 feet minimum (including walk) to 24 feet maximum are designated as a "Public Parkway". The parkway includes a 5 foot walkway (see Figure C) The remaining 6 feet minimum to 17 feet maximum shall be the "Transistion Zone", to be contoured and planted by the Owner or Occupant. Common elements within the Landscape Easement include a walkway, planting, irrigation, street lighting, project signing and project entries. 5.1.2 The Streetscape Zone Design Concept The streetscape within Black River Office Park will consist of a unified single image, namely: a single row of street trees planted approximately 5 feet from the curb line on a landscaped berm, on both sides of the main roadway. Lawn shall occur from the curb to the walkway. Informal tree, shrub and groundcover plantings shall occur between the walkway and the landscape easement. Individual project entries will punctuate these plantings providing highlighted corporate identification. • A walkway will meander through the public parkway providing an added dimension to the overall Blackriver streetscape scene. 5.1.3 Interior Zone The Interior Zone encompasses all exterior elements not covered by the requirements of Section45.1.1 and 5.1.2. This zone is subject to the needs of each Owner or Occupant and, thus, is meant to have a greater degree of flexibility than the streetscape zones. Common concerns within this zone include: parking lot arrangements and landscaping, site lighting, regulatory and directional signing, and service area screening. 5.1.4 Interior Zone Design Concept It is intended that the Interior Zone of Blackriver Technology Park, consisting primarily of parking lot landscaping, be planted in geometric patterns. (Refer to Section 2.2.5c for plant types). Subtle light levels, restrained graphics and screening of service areas will all contribute to reinforcing the Blackriver Technology Park landscape design concept. The Streetscape within Blackriver Technology Park will consist of a unified single image, namely: a single row of street trees planted on both sides of the Southwest 4th Place approximately 5 feet from the curbline on a landscaped berm Lawn will occur from the curbline to the walkway. Informal tree, shrub and groundcover plantings shall occur between the walkway and the property line of individual properties of Owners or Occupants. This is the "Transition Zone". Individual project entries will punctuate these plantings providing highlighted corporate identification. Two major Blackriver entry monuments will be provided, namely: entrances to Blackriver Technology Park. 5.1.5 Grantor Provided Amenities 5.1.5a Exceptions Exceptions to 5.1.4a above, shall occur at the west entry to Blackriver Technology Park where a special entry landscape feature shall be provided by the Grantor (refer to the Concept Master Plan). 5.1.5b Entry Feature The Grantor shall be responsible to provide a special landscaped feature at the entrances to Powell Avenue S.W. and Naches Avenue S.W. (Refer to the. Master Plan, Exhibit A) . This area shall include a special landscaping and a Blackriver identification monument (sign). 5.1.5c Pedestrian Easements The Grantor shall be responsible to provide three(3) ten foot wide landscaped pedestrian easements (refer to the Concept Master Plan Exhibit A). Landscaping in this area shall include a five (5) foot wide walkway leading from the public sidewalk within the landscape easement to preserve and/or buffer areas. Landscaping on either side of the walkway shall be native groundcover vegetation. 5.1.6 Other Requirements 5.1.6a All planting areas shall have a fully automatic irrigation system. 5.1.6b All planting and irrigation details and technical specifications shall conform to the highest standards of the American Association of Nurseryman, the American Landscape Contractors Association, and the irrigation industry. 5.1.6c It shall be the Owner or Occupant's responsibility to provide a one year guarantee against all defects of materials and workmanship for all planting and irrigation. The Owner or Occupant shall replace plants not in normal , healthy growing condition at the end of the guarantee period with same species and size. The guarantee period shall begin when the Owner or Occupant, and Grantor or their representative have accepted the work as 100 percent complete. 5.2 LANDSCAPE DESIGN GUIDELINES 5.2.1 Assessment District Installation and Maintenance Agreement 1. All landscape improvements within the Public Parkway (S.W. 4th Place Land- scape Easement Section 5.1.1-1) will ble installed by the Grantor. 2. The Grantor has entered into a five year maintenance agreement to maintain the Public Parkway. Landscape maintenance will be paid for through Assessment District revenues. Following the expiration of the five year maintenance period, all maintenance will be assumed by the Owner or Occupant of individual development parcels and will be assumed by the Owner or Occu- pant of individual development parcels and will be paid for through the continuation of an Assessment District. 3. The 30 foot Landscape Easement (Public Parkway and Transistion Zone) landscaping and irrigation will be installed as a continuouss linear system. Demolition of this system at vehicular access points will be necessary during the process of the access drive installation. It is a responsibility of the Owner or Occupant to maintain the flow of the irrigation system during construction, and to re-establish the planting, grading and final irrigation layout that has been altered. 5.2.2 Maintenance of Unimproved Sites 1. Sites that are not improved or built upon shall be maintained in a clean and neat appearance by the Owner or Occupant. Weeds, brush and trash will be removed twice a year, once in the spring and once in the fall , or more often as required to maintain a high quality-appearance. The Grantor and their representative have the right to perform the necessary maintenance and charge the individual Owner or Occupant as necessary. 5.2.3 Landscape Coverage 1. A minimum of fifteen (15) percent of the gross site area within the property lines of a development site (exclusive of the Landscape Easement Transition Zone) shall be devoted to landscape materials unless otherwise approved in writing by the Grantor. 5.2.4 Street Frontage Zone Design Guidelines The street frontage zone is defined as that portion of the site which is adjacent to the Southwest 4th Place Landscape Easement. 5.2.4a Specific Design Limitation within the Street Frontage Zone 1. Grading: Finish grading for each site shall provide for a smooth transition with the walkway in the Public Parkway. Transition slope in this zone shall not exceed 4:1. 2. Service Areas: Service areas within this zone are to be enclosed with solid walls and screened with the appropriate landscape material . (Refer to 5.2.4.b-4 for plant types). 3. Parking: Berming shall be provided within the Transition Zone of the Landscape Easement. 4. Screening Shrubs: The following shrubs, in combination with walls or fences, have been selected to aid in eye level screening of service areas. Planting areas shall be a minimum width of 4 feet. All planting areas exceeding 4 feet shall also conform to these landscape guidelines. The shrubs should be planted at a size to achieve a minimum height of 5 feet within a 3 year period from the date of planting. Plant Name Maximum Spacing Comments Chaenomeles lagenaria 4' on center Full Euonymous alatus 4' on center Full Forsythia sp. 4' on center Full Juniper chinesis var. 4' on center Full Juniper squamata var. 4' on center Full Ligustrum vulgare 4' on center Full Philadelphus virginalis 4' on center Full Spiraea prunifolia 4' on center Full Spiraea vanhouttei 4' on center Full Thuja occidentalis pyramidalis 3' on center Full Thuja orientalis 4' on center Full Viburnum opulus 4' on center Full 5.2.5 Parking Lot Landscape Requirements 5.2.5a Tree Planting Requirements 1. Two (2) types of trees are identified for the parking lot planting. (Refer to Section 5.2.5c for plant types) Type A: End of Parking Column Planting Type B: Interior Parking Lot Planting Type A: These trees shall be planted at the ends of parking columns (see Figures J, K, and L) and at intermediate planting islands Figure J. A single tree species, with a minimum height of 12 feet shall be planted throughout the Owner or Occupant's entire parking lot compound. Type B: These trees shall be planted in the parking lot interior (see Figures K and L). A single tree species, with a minimum height of 8 feet shall be used. The tree species may be different in separated parking lots within the compound. Credit will not be given for perimeter edge tree planting. A minimum of one (1) tree shall be planted for every six (6) car stalls. 2. Tree' wells and planter areas within paved parking areas shall provide a minimum 4 foot clear planting space. 3. Planting areas shall have a 6 inch curb on all sides. 4. All parking lot planting beds in addition to Type A and Type B trees shall be planted with shrubs and/or groundcover. The size and spacing to conform to Section 5.2.4.b.4. 5. Planting beds shall be a minimum of 25 square feet. 5.2.5.b Parking and Pedestrian Circulation 1. Parking location and layout should facilitate easy and safe pedestrian circulation. 2. If the parking layout is more than one row deep, walking space with a minimum width of 4 feet between stalls should be provided at key locations. 3. If parking lots exceed two rows in depth, the alignment of the aisles should be in the direction of the pedestrian movement. 5.2.5c Parking Lot Plant Materials List 1. Tree species are to be selected from the following lists. If special soil or site conditions prevent the use of the recommended trees, the Owner or Occu- pant. should recommend an alternative to the Design Review Committee. Tree Lists for Parking Compounds Type A Trees: (Refer to Section 5.2.5.a-1A) Plant Name Minimum Size Comments Acer platanoides, sp. var. 12' Well branched Acer saccharum 12' Well branched Aesculus hippocastanum 12' Well branched Fraxinus americana (seedless) 12' Well branched Gleditsia triacanthos inermis 12' Well branched Tilia cordata 12' Well branched All Type A Trees to be limbed up to six (6) feet from the ground. Type B Trees: (Interior Parking Lot Planting) Plant Name Minimum Size Comments Crataegous lavallei 8' Well branched Crataegus phaenopyrum 8' Well branched Malus, var. 8' Well branched Prunus cerasifera 8' Well branched Sorbus aucuparia 8' Well branched All Type B Trees to be limbed up to four (4) feet from the ground. 5.2.6 Vehicular Access Drive Design Guidelines 5.2.6a Location Criteria 1. The location of major access drives shall be approved by the Grantor. 2. Access drives for "right turn only" ingress and egress should be located by the Owner or Occupant according to City of Renton Standards. 5.2.6b Limited Use Area of Primary and Secondary Access Drives 1. The "limited use area" is defined as the area extending 10 feet on either side of an access drive and in that area of the first 10 feet extending from the curbline of the public street. 2. All objects higher than 30 inches above the top of the curb at the access drive curb opening, including but not limited to, shrubs, signs and earth berms shall be located outside of the limited use area. Trees without limbs to a height of six (6) feet may be planted in this area. 5.2.7 Guidelines for Interior Property Lines and Landscape Areas 5.2.7a Side/Rear Yard Requirements 1. A 5 foot minimum planting strip is to be provided continuously along all interior property lines not adjacent to landscape easements, except where a shared access drive has been mutually agreed upon by adjoining property owners. • 2. All site drainage shall be coordinated with the overall project Site Drainage Master Plan and shall comply with the City of Renton Storm Drainage Ordinance. 3. A maximum slope of 2:1 is allowed within the 5 foot planting zone. A 1 foot minimum flat transition shall be provided at the top and bottom of all slopes within this zone. 4. Where the two properties adjoin., there shall be a 10 foot minimum zone created by the two 5 foot landscape planting strips on each side of a property line. All planting areas exceeding the 5 foot minimum shall also conform to these landscape guidelines. 5. No walls or fences shall be permitted within the required 5 foot minimum planting zone. However, walls or fences separating adjoining parcels may be permitted when located at the property line. Walls or fences which contribute to a specific landscape design may be submitted to the Design Review Committee for consideration. 5.2.7b Side/Rear Yard Landscape Requirements 1. General - Either shrub or tree planting shall be required in the 5 foot side and rear yard zone. Where two properties adjoin, shrub plantings with groundcover is required on one side of the property line and tree plantings with groundcover is required on the other. The first Owner or Occupant to receive plan approval shall be required to plant the required trees with groundcover. The second Owner or Occupant must then plant the required shrubs with groundcover. 5.2.7c Plant Material Requirements - Interior Property Lines 1. Trees: Shall be located 4 feet from curbs or 1 foot from the property line'. The trees selected for interior property lines must be species selected from the Tree List. (Refer to Section 5.2.5c) 2. Shrubs: Shall be located 3 feet from the property line or 2 feet from the curb, and planted with a maximum spacing of 5 feet on center. 3. Groundcover: Shall be placed 24 inches on center maximum spacing, covering all ground surfaces. 4. Sod lawn may be used in lieu of groundcover. . 5.2.8 Guidelines for Exterior Property Lines 1. Side/Rear Yard Requirements Adjacent to Landscape Easements a. Parking lots require no setback from the Landscape Easement. Parking lotsshall be back five (5) feet from side on river property lines. b. A minimum 60 foot front yard setback is required. Landscaping within this zone shall conform to praking lot landscaping and transition zone landscaping. 5.2.9 Guidelines for Free Preservation Outside the "Preserve" Zone Trees selected for preservation shall have a "tree well" (fill retaining wall ) constructed to maintain an undisturbed existing ground area around the tree. Provide approximately 5 sq. ft. for each caliper inch of trunk measured at 48" above existing grade. The tree well shall be constructed in a manner to protect all roots. No root cutting allowed. Special care shall be taken to maintain ground water level and quality as nearly as possible to pre-development conditions. This may include special irrigation and drainage systems or culvert systems connecting the tree wells to nearby wetlands so that the rise and fall of ground water will be similar to pre-development conditions. Storm water may be retained on-site as necessary or desirable to assist in maintaining ground water levels. Tree wells may be constructed of railroad ties, treated timbers or poured-in-place concrete, with an 8 inch high curb of timber, concrete or asphalt on all sides. Provide hand rails where resultant depressions are more than 30 inches deep. Conditions may vary at each tree location. Analyze each tree to ascertain the best solution or combination of solutions to minimize adverse environmental impacts. Consult an Aborist regarding selection of trees to be preserved and preservation procedures to be used. Selected trees are subject to review and approval by the. City of Renton. . 6.0 Signing Guidelines 6.1 OBJECTIVES The objectives of Signing Guidelines for Blackriver Technology Park are: 1. to allow sufficient, though not excessive, business identification devises so that the name of each business locating in Blackriver Technology Park is clearly and individually associated with the facilities it occupies, when viewed by motorists passing by on fronting streets 2. to prohibit signs and business identification devices from, . being used for advertising of any kind including, but not limited to, advertising of pro- ducts, services, or job openings 3. to allow on each lot sufficient, though not excessive, informational , direc- tional , and traffic control signing for convenient and efficient operation 4. to have all informational , vehicular control , and temporary signing be uniform in design, size, height, color, material , and topography 5. to permit sufficient, though not excessive, temporary signing including those identifying the future occupant, the design consultants, the general con- tractor, lending institutions, sale or leasing agents, and the building product to be offered 6. to insure that signing and identification devices do not, because of their height, location or design, contribute to a decrease in the safety and efficiency of traffic flows in fronting streets 6.2 SIGN SUBMITTALS: 1. An overall sign program including any (1) detached business identifica- tion signs, (2) building mounted business or building identification signs and (3) informational and vehicular control signs shall be submitted as part of the preliminary plan submittal to the Blackriver Technology Park Design Review Committee. 6.3 DETACHED BUSINESS IDENTIFICATION SIGNS: 1. Detached business identification signs shall be limited to the display of the name and/or symbol of the business or businesses occupying the site. No messages or advertising of any kind including, but not limited to, adver- tising of products, services, or job openings shall be permitted. 2. No more than one detached business identification sign shall be permitted on each street frontage of a development parcel . 3. No detached business identification sign shall exceed a sign area which is the lesser of 50 square feet per side or the maximum sign area permitted by the local governing authority. The sign area is defined as the area of the surface or surfaces which displays letters or symbols identifying the bus- iness or businesses occupying the site, or when the sign is of free- standing letters, the single rectangular area which fully encloses all letters or symbols identifying the business or businesses occupying the site. The sign area shall not include the base or pedestal to which the sign is mounted. 4. All detached business identification signs shall be permanent "ground hugger" type signs and shall not exceed a height of five feet above the underlying finish grade unless otherwise approved in writing by J.A.G./Renton Properties Associates. 5. All detached business identification signs shall be of such materials and design to be compatible with and complimentary to the on-site design concept as well as landscape and physical design features. 6. Illumination - Detached business identification signs may be illuminated by continuous and uniform internal illumination, backlighting, or ground light- ing. No flashing or moving lights will be permitted. No unprotected lamp providing sign illumination shall be directly visible when viewed at any angle from a distance of twenty feet or more. No sign illumination shall cast a glare which will be visible from any street or access drive. 7. Location - Detached business identification signs must be located within 20 feet of a fronting street and the access drive but shall not exceed 30 inches in height when located in the first 10 feet adjacent to access drive closest to the street. 6.4 BUILDING MOUNTED BUSINESS OR BUILDING IDENTIFICATION SIGNS: 1. Building mounted business or building identification signs shall be limited to the display of the building name or the name and/or symbol of the business occupying the site. No message or advertising of any kind including, but not limited to the advertising of products, services or job openings shall be permitted. 2. No more than one building mounted sign shall be permitted for each street frontage of a development parcel . 3. Business or building identification signs may be mounted to any vertical surface of a building or building associated wall provided such signs appear as an integral part of the overall architectural and site design concept. 4. The sign area of building mounted business or- building identification signs may not exceed the lesser of 50 square feet or the maximum building mounted sign area permitted by the local governing authority. The building mounted sign area is defined as the area of the surface or surfaces which displays letters or symbols identifying the business or businesses occupying the site or when the sign is of freestanding letters, the single rectangular area which fully encloses all letters or symbols identifying the business or businesses occupying the site. 5. Building mounted business or building signs shall not extend beyond a height above the ground floor which is the lesser of 32 feet or the maximum height permitted by the local governing authority. 6. Building mounted business or building identification signs may be illuminated by internal illumination or backlighting provided that the color and inten- sity of such lighting appears as an integral part of the overall architec- tural and site design concept. No sign illumination shall cast a glare which will be visible from any street or access drive. 6.5 INFORMATIONAL AND VEHICULAR CONTROL SIGNS: 1. All informational and vehicular control signs shall be of uniform design using ASI/Fiberglass Post & Panel System or a sign system of equal design which is specifically approved in writing by J.A.G./Renton Properties Assoc- iates. All lettering shall be Helvetica Medium, white in color. Red and yellow may be used for stop and yield signs respectively. 2. No informational or vehicular control sign shall have a panel face which exceeds 5 square feet in area per side. 3. No business name, symbol or advertising of any sort shall be permitted on any informational or vehicular control sign. 4. No informational or vehicular control sign shall exceed a height of 4 feet above the underlying grade. 5. No informational or vehicular control sign shall be located s.o as to reduce the safe flow of vehicles or pedestrians. 6. No informational or vehicular control sign shall be internally illuminated or illuminated from the ground. 6.6 TEMPORARY SIGNS. Only one temporary sign plus one financing sign shall be permitted per development parcel . No additional individual signs shall be permitted. J.A.G./Renton Properties Associates or its representatives have the right to remove unpermitted signs and charge the individual tenant or property owner for the cost of such removal . 2. Temporary development signs shall be of a uniform size, area, height, color, and design as illustrated here and shall , at a minimum, identify Blackriver Technology Park and the business or company developing the parcel . The remaining sign area shall be limited to identification of the following and no other information: a. a concise identification of the nature of the development b. the projected date of completion c. the construction lender d. the real estate brokerage firm e. the general contractor f. the architect g. the landscape architect b. the structural engineer i . the civil engineer j. the mechanical engineer k. the electrical engineer 3. No temporary development sign shall be located so as to reduce the safe flow of vehicles and pedestrians 4. All temporary development signs shall be removed prior to occupancy. 7.0 Lighting Guidelines 7.1 OBJECTIVES 1. to have on-site lighting contribute to the safe and efficient use of a development site 2. to have on-site lighting contribute to site security 3. to have on-site lighting compliment and reinforce the architecture and site design character 4. to have on-site parking lot lighting fixtures and illumination levels be consistent throughout Blackriver Technology Park 5. to prevent on-site lighting from casting glare onto adjacent lots 6. to prevent on-site lighting from casting glare onto adjacent streets in such a manner as to decrease the safety of vehicular movement 7. to encourage lighting design that is in conformance with energy saving guidelines 7.2 LIGHTING QUALITY All lighting potentially visible from an adjacent street except bollard lighting less than 42 inches high, shall be indirect or shall incorporate a full cut off shield type fixture. 7.3 PARKING, ACCESS AND CIRCULATION AREAS Parking areas, access drives, and internal vehicular circulation areas - All parking lot lighting fixtures shall be a zero series or a fixture of similar "shoe box" type design mounted at 18'-0" atop a square metal pole. Both the fixture and pole are to have a durable black finish. The light source shall be 150 watt color corrected high pressure sodium. The parking lot illumination level shall achieve a uniformity ratio of 3 to 1 (average to minimum) with a maintained average of 1 foot candle and a minimum of .3 foot candle. 7.4 SERVICE AREAS Service area lighting shall be contained within the service yard boundaries and enclosure walls. No light spillover should occur outside the service area. The light source should not be visible from the street. 7.5 BUILDING ILLUMINATION Building illumination and architectural lighting shall be indirect in charac- ter. (No light source visible). Indirect wall lighting or "wall washing" overhead down lighting, or interior illumination which spills outside is encouraged. Architectural lighting should articulate and animate the particular building design as well as provide the required functional light- ing for safety and clarity of pedestrian movement. 7.6 PEDESTRIAN AREAS Pedestrian walk and area lighting is segmented into 2 zones. 1. The first zone is pedestrian area lighting. This is for outdoor pedes- trian use areas such as courtyard, entry way, etc. Pedestrian area lighting should achieve a 'uniformity ratio of 3.5 to 1 average to minimum, with an average illumination of .60 foot candles and a minimum of .18 foot candles. 2. The second zone is pedestrian walk lighting where point to point lighting is acceptable with no specific illumination levels required. The main emphasis in this zone should be to clearly identify the pedes- trian walkway and direction of travel . 8.0 Appendix CONTACT AND REFERENCE LIST DEVELOPER (Grantor) J.A.G./Renton Properties Associates Alterra Corp. , General Partner 710 Cherry Street Seattle, WA 98104 Phone: (206) 382-0333 Contact: ' Delton Bonds PROJECT CONSULTANT (Planning, Site, Civil & Utilities Design, Landscape Architecture) Richard Carothers Associates 814 E. Pike Street Seattle, WA 98122 Phone: (206) 324-5500 Contact: Richard A. Carothers GOVERNMENTAL AGENCIES City of Renton Municipal ' Building 200 Mill Avenue South Renton, WA 98055 o Planning Department Ronald G. Nelson, Director Phone (206) 235-2540 Contact: Roger J. Blalock, Zoning Administrator Jerry Lind, Land Use Inspector o Public Works Richard Houghton, Director Phone (206) 235-2569 Contact: Richard Houghton o Engineering Department Robert Bergstrom, P.E. , Director Phone (206) 231-2631 Contact: Robert Bergstrom, P.E. o Fire Department James Matthew, Fire Marshall Phone (206) 235-2642 Contact: James Matthew PLANNING & DESIGN REFERENCES Renton Zoning Ordinance Building Regulations, Title 4, Chapter 23 (Grading & Filling) Subdivision Ordinance, Chapter 11 (Preliminary Plat) Controlling Building Code: Uniform Building Code with City enacted amendments. Maps and plans, Contact J.A.G./Renton Properties Associates Covenants, Conditions and Restrictions Contents DECLARATION OF COVENANTS, CONDITIONS AND RESTRICTIONS FOR BLACKRIVER TECHNOLOGY PARK Page No. RECITALS 1 1.0 DEFINITIONS 2 1.1 Architect, Landscape Architect, Civil Engineer 1.2 Beneficiary 1.3 Declarant 1.4 Declaration 1.5 Deed of Trust 1.6 Improvement - Improvements 1.7 Lot 1.8 Mortgage 1.9 Mortgagee 1.10 Occupant 1.11 Owner 1.12 Record - Recorded - Recordation 1.13 Sign 1.14 Street or Streets 1.15 Subject Property 1.16 Visible from Neighboring Property 2.0 SUBJECT PROPERTY 4 2.1 General Declaration 2.2 Addition of Other Realty 2.3 Notice of Addition of Land • 3.0 CONSTRUCTION OF IMPROVEMENTS 6 3.1 Approval of Plans Required 3.2 Basis for Approval 3.3 Review Fee 3.4 Result of Inaction 3.5 Approval 3.6 Proceeding with Work 3.7 Completion of Work 3.8 Declarant Not Liable 3.9 Construction Without Approval 4.0 DEVELOPMENT STANDARDS 10 4.1 Minimum Setback 4.2 Exceptions to Setback Requirements 4.3 Landscaping Page No. 4.0 DEVELOPMENT STANDARDS (Continued) 4.4 Signs 4.5 Parking Areas 4.6 Storage and Loading Areas 5.0 REGULATION OF OPERATIONS AND USES 14 5.1 Permitted Uses 5.2 Prohibited Uses • 5.3 Nuisances 5.4 Condition of Property 5.5 Maintenance of Grounds 5.6 Remedies for Failure to Maintain & Repair (a) Remedies (b) Foreclosure of Lien (c) Cure (d) Nonexclusive Remedy 5.7 Taxes and Assessments 5.8 Refuse Collection Areas 5.9 Repair of Buildings 5.10 Public Utilities 5.11 Utility Lines and Antennas 5.12 Mechanical Equipment 5.13 Mineral Exploration 5.14 Other Operations and Uses 6.0 MODIFICATION AND REPEAL 23 6.1 Procedure 6.2. •Modification by Declarant 6.3 Governmental Regulation 7.0 ENFORCEMENT 25 7.1 Abatement and Suit 7.2 Right of Entry 7.3 Deemed to Constitute a Nuisance 7.4 Attorney's Fee 7.5 Failure to Enforce is No Waiver 8.0 ASSIGNMENT 27 9.0 CONSTRUCTIVE NOTICE AND ACCEPTANCE 27 10.0 WAIVER 28 Page No. 11.0 RUNS WITH LAND 28 12.0 RIGHTS OF MORTGAGEES 28 13.0 CAPTIONS 29 14.0 EFFECT OF INVALIDATION 29 DECLARATION OF COVENANTS CONDITIONS AND RESTRICTIONS FOR BLACKRIVER TECHNOLOGY PARK This Declaration, made this day of , 1984, by J.A.G./ Renton Properties Associates, a Washington Partnership, is made with reference to the following facts: RECITALS A. Blackriver Technology Park is the owner of that certain real property in the City of Renton, County of King, State of Washington described in Exhibit A attached hereto and by this reference incorporated herein, and known as Blackriver Technology Park. B. Blackriver Technology Park is being developed as a planned industrial park. It is J.A.'G./Renton Properties Associates desire and intention to subject the real property in said industrial park to certain covenants, conditions and restrictions for the benefit of the property, J.A.G./Renton Properties Associates, and the purchasers of lots in Blackriver Technology Park. It is intended that said covenants, conditions and restrictions bind and benefit not only said purchasers and J.A.G./Renton Properties Associates, but also their respective successors, heirs and assigns and that all lots in Blackriver Technology Park should be held, used, leased, sold and conveyed subject to the covenants, conditions and restrictions set forth in this Declaration. -1- C. It is the intention of J.A.G./Renton Properties Associates to further a plan of subdivision by means of the covenants, conditions and restrictions set forth in this Declaration. Said covenants, conditions and restrictions are intended to be common to all of the lots in Blackriver Technology Park and to enhance and protect the value, desirability and attractiveness of all such lots to their mutual benefit. 1.0 DEFINITIONS Unless the context otherwise specifies or requires, the terms defined in this (1.0 Definitions) , shall as used in this Declaration, have the meanings herein set forth: 1.1 Architect, Landscape Architect, Civil Engineer. The term "architect, landscape architect and civil engineer", shall mean a person holding a certificate to practice architecture, landscape architecture or civil engineering, in the State of Washington. 1.2 Beneficiary. The term "beneficiary" shall mean a mortgagee under a mortgage as well as a beneficiary under a deed of trust. 1.3 Declarant: The term "Declarant" shall mean J.A.G./Renton Properties Associates and, to the extent provided in Article VIII of this Declaration, its successors and assigns. 1.4 Declaration. The term "Declaration" shall mean this Declaration of Covenants, Conditions and Restrictions for Blackriver Technology Park, as it may from time to time be amended or supplemented. 1.5 Deed of Trust. The term "deed of trust" shall mean a mortgage as well as a deed of trust. 1.6 Blackriver Technology Park. The term "Blackriver Technology Park" shall be synonymous with the term "subject property" and shall mean all of the real property -2- now or hereafter made subject to this Declaration. 1.7 Improvement - Improvements. The term "improvement" or "improvements" shall include buildings, outbuildings, roads, driveways, parking areas, fences, screening walls and barriers, retaining walls, stairs, decks, water lines, sewers, electrical and gas distribution facilities, hedges, windbreaks, plantings, planted trees and shrubs, poles, signs, loading areas and all other structures, installations and landscaping of every type and kind, whether above or below the land surface. 1.8 Lot. The term "lot" shall mean a fractional part of the subject property as subdivided on subdivision or parcel maps recorded from time to time in the Office, of the Recorder of the County of King, State of Washington. 1.9 Mortgage. The term "mortgage" shall mean a deed of trust as well as a mortgage. ! 1.10 Mortgagee. The term "mortgagee shall mean a beneficiary under, or holder of, a deed of trust as well as a mortgagee under a mortgage. 1.11 Occupant. The term "Occupant" shall mean a lessee or licensee of an Owner, or any other person or entity other than an Owner in lawful possession of a lot with the permission of the Owner. 1.12 Owner. The term "Owner" shall mean and refer to any person or entity which is the record Owner of fee simple title to any lot, excluding any entity or person who holds such interest as security for the payment of an obligation, but including contract sellers and any mortgagee or other security holder in actual possession of a lot. 1.13 Record - Recorded - Recordation. The terms "record," "recorded," or "recordation" shall mean, with respect to any document, the recordation of said document in the Office of the Recorder of the County of King, State of Washington. -3- 1.14 Sign. The term "sign" shall mean any structure, device or contrivance, electric or non-electric, upon or within which any poster, bulletin, printing, lettering, painting, device or other advertising of any kind whatsoever used, placed, posted, tacked, nailed, pasted, or otherwise fastened or affixed. 1.15 Street of Streets. The term "street" or "streets" shall mean any street, highway, road, or thoroughfare within or adjacent to the subject property and shown on any recorded subdivision or parcel map, or record or survey, whether designated thereon as street, boulevard, place, drive, road, court, terrace, way, lane, circle or otherwise. 1.16 Subject Property. The term "subject property shall be synonymous with the term "Blackriver Technology Park" and shall mean all of the real property now or hereinafter made subject to this Declaration. 1.17 Visible from Neighboring Property. The term "visible from neighboring property" shall mean, with respect to any given object on a lot, that such object is or would be visible to a person six (6) feet tall , standing on any part of any adjacent lot or other property at an elevation no greater than the elevation of the • base of the object being viewed. 2.0 SUBJECT PROPERTY 2.1 General Declaration. Declarant hereby declares that all of that real property located in the City of Renton, County of King, State of Washington, and more particularly described in Exhibit "A" is, and shall be, conveyed, hypothecated, encumbered, leased, occupied, built upon or otherwise used, improved or transferred in whole or in part, subject to this Declaration. All of the covenants, conditions and restrictions set forth herein are declared and agreed to be in furtherance of a general plan for the subdivision, improvement and sale of said real property and are established for the purpose of enhancing and protecting the value, desirability -4- and attractiveness of the subject property and every part thereof. All of said covenants, conditions and restrictions shall run with all of the subject property for all purposes and shall be binding upon and inure to the benefit of Declarant and all Owners, Occupants, and their successors in interest as set forth in this Declaration. 2.2 Addition of Other Realty. Declarant may at any time during the pendency of this Declaration add all or a portion of any real property now or hereinafter owned by Declarant to the subject property, and upon recording of a notice of addition of real property containing at least the provisions set forth in Section 2.3, the provisions of this Declaration specified in said notice shall apply to such added real property in the same manner as if it were originally covered by this Declaration. Thereafter, to the extent that this Declaration is made applicable thereto, the rights, powers and responsibilities of Declarant and the Owners and Occupants of lots within such added real property shall be the same as in the case of the real property described in Exhibit "A". 2.3 Notice of Addition of Land. The notice of addition of real property referred to in Section 2.2 shall contain at least the following provisions: (a) A reference to this Declaration stating the date of recording and the book or books of the records of King County, Washington, and the page numbers where this Declaration is recorded; (b) A statement that the provisions of this Declaration, or some specified part thereof, shall apply to such added real property; (c) A legal description of such added real property; and (d) Such other or different covenants, conditions and restrictions as Declarant shall , in its discretion, specify to regulate and control the use, occupancy and improvements of such added real property. -5- 3.0 CONSTRUCTION OF IMPROVEMENTS 3.1 Approval of Plans Required. No improvements shall be erected, placed, altered, maintained or permitted to remain on any lot by any Owner or Occupant until final plans and specifications shall have been submitted to and approved in writing by Declarant. Such final plans and specifications shall be submitted in duplicate over the authorized signature of the Owner or Occupant or both of the lot or the authorized agent thereof. Such plans and specifications shall be in such form and shall contain such information as may be required by the Declarant, but shall in any event include the following: (a) A site development plan of the lot showing the nature, grading scheme, kind, shape, composition, and location of all structures with respect to the particular lot (including proposed front, rear and side setback lines), and with respect to structures on adjoining lots, and the number and location of all parking spaces and driveways on the lot; (b) A landscaping plan for the particular lot; (c) A plan for the location of signs and lighting; and (d) A building elevation plan showing dimensions, materials and exterior color scheme in no less detail than required by the appropriate governmental authority for the issuance of a building permit. Material changes in approved plans must be similarly submitted to and approved by Declarant. 3.2 Basis for Approval . Approval shall be based, among other things, upon adequacy of site dimensions, adequacy of structural design, conformity and harmony of external design with neighboring structures, effect of location and use of proposed improvements upon neighboring lots, proper facing of main elevation with respect to nearby streets, adequacy of screening of mechanical , air conditioning or other roof'top installations, and conformity of the plans and specifications to the purpose and general plan and intent of this Declaration. No plans will be approved -6- which do not provide for the underground installation of power, electrical , telephone and other utility lines from the property line to buildings. Plans which provide for metal-clad buildings will be approved only on the condition that such buildings are constructed so as not to have the appearance of a metal building and any metal-clad building must be specifically approved in writing. Declarant shall not arbitrarily or unreasonably withhold its approval of any plans and specifications. Except as otherwise provided in this Declaration, Declarant shall have the right to disapprove any plans and specifications submitted hereunder on any reasonable grounds including, but not limited to, the following: (a) Failure to comply with any of the restrictions set forth in this Declaration; (b) Failure to include information in such plans and specifications as may have been reasonably requested by Declarant; (c) Objection to the exterior design, the appearance of materials or materials employed in any proposed structure; (d) Objection on the ground of incompatibility of any proposed structure or use with existing structures or uses upon other lots, or other property in the vicinity of the subject property; (e) Objection to the location of any proposed structure with reference to other lots, or other property in the vicinity; (f) Objection to the grading or landscaping plan for any lot; (g) Objection to the color scheme, finish, proportions, style or architecture, height, bulk or appropriateness of any structure; (h) Objection to the number or size of parking spaces, or to the design of the parking area; (i ) Any other matter which, in the judgment of the Declarant, would render the proposed improvements or use inharmonious with the general plan .for improvement of -7- the subject property or with improvements located upon other lots or other property in the vicinity. 3.3 Review Fee. An architectural review fee shall be paid to Declarant at such time as plans and specifications are submitted to it based upon the following schedule: , (a) When the plans submitted are prepared by a licensed architect, engineer or landscape architect, the architectural review fee shall be the sum of One Hundred and no/100ths Dollars ($100.00); (b) In all other cases, the architectural review fee shall be the sum or Two Hundred Fifty and no/100ths Dollars ($250.00). 3.4 Result of Inaction. If Declarant fails either to approve or disapprove plans and specifications submitted to it for approval within forty-five (45) days after the same have been submitted, it shall be conclusively presumed that Declarant has disapproved said plans and specifications; provided, however, that if within the forty-five (45) day period Declarant gives written notice of the fact that more time i-s required for the review of such plans and specifications, there shall be no presumption that the same are disapproved until the expiration of such reasonable period of time as is set forth in the notice. 3.5 Approval . Declarant may approve plans and specifications as submitted, or as altered or amended, or it may grant its approval to the same subject to specific conditions. Upon approval or conditional approval by Declarant of any plans and specifications submitted, a copy of such plans and specifications, together with any conditions, shall be deposited for permanent record with Declarant, and a copy of such plans and specifications, bearing such approval together with any conditions, shall be returned to the applicant submitting the same. -8- 3.6 Proceeding with Work. Upon receipt of approval from Declarant pursuant to Section 3.5, the Owner, or Occupant, or both, to whom the same is given, shall , as soon as practicable, satisfy any and all conditions of such approval and shall diligently proceed with the commencement and completion of all approved excavation, construction, refinishing, and alterations. In all cases, work shall commence within one (1) year from the date of approval , and if work is not so commenced approval shall be deemed revoked unless Declarant, pursuant to written request made and received prior to the expiration of said one (1) year period, extends the period of time within which work must be commenced. 3.7 Completion of Work. Any improvement commenced pursuant hereto shall be completed within two (2) years from the date of Declarant's approval of the plans and specifications therefor, except for so long as such completion is rendered impossible, or unless work upon the proposed improvements would impose a great • hardship upon the Owner or Occupant, to whom Declarant's approval is given, due to strike, fire, national emergency, natural disaster or other supervening force beyond the control of Owner or Occupant. Declarant may, upon written request made and received prior to the expiration of the two (2) year period, extend the period of time within which work must be completed. Failure to comply with this Section 3.7 shall constitute a breach of this Declaration and subject the party in breach to the enforcement procedures set forth in 7.0. 3.8 Declarant Not Liable. Declarant shall not be liable for any damage, loss or prejudice suffered or claimed by any person on account of: (a) The approval or disapproval of any plans, drawings and specifications, whether or not in any way defective; (b) The construction of any improvement, or performance of any work, whether or not pursuant to approved plans, drawings and specifications; or -9- (c) The development of any lot within Blackriver Technology Park. 3.9 Construction Without Approval . If any improvement shall be erected, placed or maintained upon any lot, or the exterior design thereof, or any new use commenced upon any lot, other than in accordance with the approval by the Declarant pursuant to the provisions of this 3.0 (Construction of Improvements) , such alteration, erection, placement, maintenance or use shall be deemed to have been undertaken in violation of this Declaration, and upon written notice from Declarant, any such improvement so altered, erected, placed, maintained or used upon any lot in violation of this Declaration shall be removed or altered so as to conform to this Declaration, and any such use shall cease or be amended so as to conform to this Declaration. Should such removal or alteration, or cessation or amendment of use not be accomplished within thirty (30) days after receipt of such notice, then the party in breach of this Declaration shall be subject to the enforcement procedures set forth in 7.0. 4.0 DEVELOPMENT STANDARDS 4.1 Minimum Setback. No improvements of any kind, and no part thereof, shall be placed closer than permitted by Declarant to an interior property line, except as otherwise provided in Section 4.2. "Interior property line" shall mean the boundary between any lot within the subject property and all other lots bordering upon said lot. No improvements of any kind, and no part thereof, shall be placed closer than twenty-five (25) feet from a property line fronting the following streets: (1) Southwest Fourth Place and (2) Naches Avenue S.W. "Property line" shall mean the boundary of every lot. 4.2 Exceptions to Setback Requirements. The following improvements, or parts of improvements, are specifically excluded from the setback requirements set forth in Section 4.1: -10- (a) Roof overhang, subject to approval in writing from Declarant, provided said overhang does not extend more than six (6) feet into the setback area; (b) Steps and walkways; (c) Paving and associated curbing; • (d) Fences, except that no fence shall be placed closer than twenty-five (25) feet from a property line fronting upon any public street without the prior written approval of Declarant; (e) Landscaping and irrigation systems; (f) Planters, not to exceed three (3) feet in height, except that planters of greater height may be built within the setback area with the prior written approval of Declarant; (g) Industrial park identification signs, directional and parking signs and signs identifying the Owner or Occupant of a lot, subject to the prior written approval of Declarant; (h) Lighting facilities, subject to the prior written approval of Declarant; and (i) Underground utility facilities and sewers. 4.3 Landscaping. Within ninety (90) days following completion of construction, or by the date each improvement is occupied, whichever shall occur first, each lot shall be landscaped in accordance with the plans and specifications. The area of each lot between any street and any minimum setback line as set forth in Section 4.1 shall be landscaped with an attractive combination of trees, shrubs and other ground cover. All other areas fronting on a street and not utilized for parking, driveways, or walkways shall be landscaped in a complementary and similar manner. All portions of a lot not fronting a street and not used for parking, storage or buildings shall be landscaped utilizing ground cover and shrub or tree materials. The Owner or Occupant shall be responsible for landscaping and maintaining the area -11- 1 known as the 'transition zone' ; refer to Landscape Design Guidelines. An underground landscape irrigation system shall be provided and maintained by the Owner or Occupant for all landscaped areas. Areas used for parking shall be landscaped, bermed or attractively fenced in such a manner as to screen said areas from view from adjacent streets and freeways. Such screening shall extend at least forty-two (42) inches above the high point of the finished pavement in said parking area. Plant materials used for this purpose shall consist of lineal or grouped masses of shrubs and trees. After completion, such landscaping as is herein required shall be maintained in a sightly and well-kept condition. If, in Declarant's reasonable opinion, the required landscaping is not maintained in a sightly and well-kept condition, Declarant shall be entitled to the remedies set forth in 7.0. 4.4 Signs. No sign shall be permitted on any lot unless approved by Declarant in writing. No sign shall be approved other than industrial park identification signs, directional and parking signs, signs identifying the name, business and products of the Owner or Occupant of a lot, and signs offering the lot for sale or lease. 4.5 Parking Areas. Off-street parking adequate to accommodate the parking needs of the Owner or Occupant, the employees and visitors thereof shall be provided by the Owner or Occupant of each lot. The intent of this provision is to eliminate the need for any on-street parking; provided, however, that nothing herein shall be deemed to prohibit on-street parking of public transportation vehicles. If parking requirements increase as a result of a change in the use of a lot or in the number of persons employed by the Owner or Occupant, additional off-street parking shall be provided so as to satisfy the intent of this section. All parking areas shall conform to ,the following standards: -12- (a) Required off-street parking shall be provided on the lot, on a contiguous lot, or within such distance from the lot as Declarant deems reasonable. Where parking is provided other than upon the lot concerned, Declarant shall be given a certified copy of a recorded instrument, duly executed and acknowledged by the person or persons holding title to the lot or other property upon which the parking area is located, stipulating to the permanent reservation of the use of the lot or other property for such parking area. (b) Parking areas shall be paved so as to provide dust-free, all-weather surfaces. Each parking space provided shall be designated by lines painted upon the paved surface and shall be adequate in area. All parking areas shall provide, in addition to parking spaces, adequate driveways and space for the movement of vehicles. (c) In determining the adequacy of the number of parking spaces to be provided by an Owner or Occupant, Declarant shall consider the nature of the proposed use of the lot, the 'amount of vehicular traffic generated by said use, the anticipated number of, and manner of employment of, persons to be employed upon the lot; the nature and location of proposed structures upon the lot; and such other matters as Declarant shall reasonably deem relevant. (d) No parking spaces shall be located on or permitted within setback areas adjacent to a street as set forth in Section 4.1, except that parking spaces may be located on or parking permitted within such area if Declarant's written permission is first obtained. Permission will not be given in any event unless parking areas within such setback areas are screened from view of the street by shrubs and trees, by a screen wall or by berms, and any such screening must extend at least forty-two (42) inches' above the high point of the finished pavement in said parking area. -13- 4.6 Storage and Loading Areas. Storage, maintenance and loading areas must be constructed, maintained and used in accordance with the following conditions: (a) Unless approved in writing by Declarant, no materials, supplies or equipment, including trucks or other motor vehicles, shall be stored upon a lot except inside a closed building or behind a visual barrier screening such materials, supplies or vehicles so as not to be visible from neighboring property and streets. Any storage areas screened by visual barriers shall be located upon the rear portions of a lot, unless otherwise approved in writing by Declarant. No storage area may extend into a setback area as defined in Section 4.1 except with the written approval of Declarant. (b) Provision shall be made on each site for any necessary vehicle loading and no on-street vehicle loading shall be permitted. (c) Loading dock areas shall be set back, recessed or screened so as not to be visible from neighboring property or streets and in no event shall a loading dock be- closer than seventy-five (75) feet from a property line fronting upon a street unless otherwise approved in writing by Declarant. 5.0 REGULATION OF OPERATIONS AND USES 5.1 Permitted Uses. Except as otherwise specifically prohibited herein, any industrial operation and use will be permitted upon a lot, provided that Declarant specifically consents to such use in writing. Such approved use shall be performed or carried out entirely within a building that is so designed and constructed that the enclosed operations and uses do not cause or produce a nuisance to other lots or property, such as, but not limited to, vibration, sound, electro-mechanical disturbances, electro-magnetic disturbances, radiation, air or water pollution, dust, or emission of odorous, toxic or non-toxic matter (including steam). Certain activities which cannot be carried on within a building may be permitted, provided -14- Declarant specifically consents to such activity in writing and further provided such activity is screened so as not to be visible from neighboring property and streets. All lighting is to be shielded so as not to be visible from neighboring property. 5.2 Prohibited Uses. The following operations and uses shall not be permitted on any property subject to this Declaration: (a) Residential use of any type; (b) Trailer courts or recreation vehicle campgrounds; (c) Junk yards or recycling facilities; (d) Drilling for and removing oil , gas or other hydrocarbon substances; (e) Refining of petroleum or of its products; (f) Commercial petroleum storage yards; (g) Commercial excavation of building or construction materials; provided, that this prohibition shall not be construed to prohibit any excavation necessary in the course of approved construction pursuant to 3.0, Construction of Improvements; (h) Distillation of bones; (i) Dumping, disposal , incineration or reduction of garbage, sewage, offal , dead animals or other refuse; (j) Fat rendering; (k) Stockyard or slaughter of animals; (1 ) Smelting of iron, tin, zinc or any other ore or ores; (m) Cemeteries; (n) Jail or honor farms; (o) Labor or migrant worker camps; (p) Truck terminals; -15- (q) Automobile, go-cart, motorcycle or quarter-midget race tracks and other vehicle endurance or race tracks; (r) Retail. stores or shopping centers; (s) Commercial service stations or gasoline stations; (t) Commercial restaurants or snack bars; or (u) Banks or savings and loans institutions. 5.3 Nuisances. No nuisance shall be permitted to exist or operate upon any lot so as to be offensive or detrimental to any adjacent lot, or property or to its occupants. A "nuisance" shall include, but not be limited to, any of the following conditions: (a) Any use, excluding reasonable construction activity, of the lot which emits dust, sweepings, dirt of cinders into the atmosphere, or discharges liquid, solid wastes or other matter into any stream, river, or other waterway which, in the opinion of Declarant, may adversely affect the health, safety, comfort of, or intended use of their property by persons within the area. No waste nor any substance or materials of any kind shall be discharged into any public sewer serving the subject property or any part thereof in violation of any regulation of any public body having jurisdiction over such public sewer; (b) The escape or discharge of any fumes, odors, gases, vapors, steam, acids or other substance into the atmosphere which discharge, in the opinion of Declarant, may be detrimental to the health, safety or welfare of any person or may interfere with the comfort of persons within the area or which may be harmful to property or �I vegetation,; (c) The radiation or discharge of intense glare or heat, or atomic, electro- magnetic, microwave, ultrasonic, laser or other radiation. Any operation producing intense glare or heat or such other radiation shall be performed only within an . -16- i. enclosed or screened area and then only in such manner that the glare, heat or radiation emitted will not be discernible from any point exterior to the site or lot upon which the operation is conducted; (d) Excessive noise. At no point outside of any lot plane shall the sound pressure level of any machine, device, or any combination of same, from any individual plant or operation, exceed the decibel levels in the designated preferred octave bands as follows: Octave Bank Maximum Sound Pressure Levels Center Frequency (db) at Boundary Plane of Lot Hz 31.5 78 63 72 125 65 250 59 500 55 1000 52 2000 50 4000 48 8000 47 A-scale levels for monitoring purposes are equivalent to 60 dB(A). The maximum permissible noise levels for the octave bands shown above are equal to an NC-50 Noise Criterion curve when plotted on the preferred frequency scale. Reasonable noise from motor vehicles and other transportation facilities are exempted, so long as the vehicles or other transportation facilities are not continuously on the subject property. The operation of signalling devices and other equipment having impulsive or non-continuous sound characteristics shall have the following corrections applied: Corrections Pure Tone Content - 5dB Impulsive Character - 5dB Duration for Non- Continuous Sounds in Daytime Only, 1 min/hr + 5dB 10 sec/10 min +10dB -17- 2 sec/10 min +15dB The reference level for the dB values listed above is the pressure of 0.0002 microbar or 0.0002 dyne/cm2. (e) Excessive emissions of smoke, steam or particulate matter. Visible emissions of smoke or steam will not be permitted (outside any building) which exceed Ringlemann No. 1 on the Ringlemann Chart of the United States Bureau of Mines. This requirement shall also be applied to the disposal of trash and waste materials. Wind-borne dust, sprays and mists originating in plants are not permitted. (f) Ground vibration. Buildings and other structures shall be constructed, and machinery and equipment installed, and insulated on each lot so that the ground vibration inherently and recurrently generated is not perceptible without instruments at any point exterior to any lot. 5.4 Condition of Property. The Owner or Occupant of any lot shall , at all times, keep it and the buildings, improvements and appurtenances thereon in a safe, clean and wholesome condition and comply, at its own expense, in all respects with all applicable governmental , health, fire and safety ordinances, regulations, requirements and directives and the Owner or Occupant shall at regular and frequent intervals remove at its own expense any rubbish of any character whatsoever which may accumulate upon such lot. 5.5 Maintenance of Grounds. Each Owner shall be responsible for the maintenance and repair of all parking areas, driveways, walkways and landscaping on his. lot. Such maintenance and repair shall include, without limitation: (a) Maintenance of all parking areas, driveways and walkways in a clean and safe condition, including the paving and repairing or resurfacing of such areas when necessary with the type of material originally installed therein or such substitute -18- l therefor as shall , in all respects, be equal thereto in quality, appearance and durability; the removal of debris and waste material and the washing and sweeping of paved areas as required; painting and repainting of striping markers and directional, signals as required; (b) Cleaning, maintenance and relamping of any external lighting fixtures except such fixtures and may be the property of any public utility or government body; and (c) Performance of all necessary maintenance of all landscaping including the trimming, watering and fertilization of all grass, ground cover, shrubs or trees, removal of dead or waste materials, replacement of any dead or diseased grass, ground cover, shrubs, or trees. Nothing contained herein shall preclude an Owner from recovering from any person liable therefor, damages to which such Owner might be entitled for any act or omission to act requiring an expenditure by the Owner for the maintenance and repair of the parking area, driveway, walkway and/or landscaping on his lot. 5.6 Remedies for Failure to Maintain and Repair. (a) Remedies. If any Owner shall fail to perform the maintenance and repair required by' Section 5.5, then Declarant, after fifteen days' prior written notice to such delinquent Owner, shall have the right, but not the obligation, to perform such maintenance and repair and to charge the delinquent Owner with the cost of such work together with interest thereon at the rate of twelve percent (12%) per annum from the date of Declarant's advancement of funds for such work to the date of reimbursement of Declarant by Owner. If the delinquent Owner shall fail to reimburse Declarant for such costs within ten days after demand therefor, Declarant may, at any time within two years after such advance, file for record in the Office of County Recorder of King County, Washington a claim of lien signed by Declarant for the amount of such charge together with interest thereon, which claim shall -19- contain: (1) a statement of the amount unpaid and the interest accrued thereon; (2) a legal description of the lot owned by the delinquent Owner; and (3) the name of the delinquent Owner. Such claim of lien shall be effective to establish a lien against the interest of the delinquent Owner in his lot together with interest at twelve percent (12%) per annum on the amount of such advance from the date thereof, recording fees, cost of tile search obtained in connection with such lien or the foreclosure thereof and court costs and reasonable attorneys ' fees which may be incurred in the enforcement of such a lien. (b) Foreclosure of Lien. Subject to the provisions of 12.0 Rights of Mortgagees, such a lien, when so established against the lot described in said claim, shall be prior or superior to any right, title, interest, lien or claim which may be or may have been acquired in or attached to the real property interests subject to the lien subsequent to the time of filing such claim for record. Such lien shall be • for the benefit of Declarant and may be enforced and foreclosed in a suit or action brought by Declarant in any court of competent jurisdiction, if brought within one year of the filing of such claim. Any such sale provided for herein is to be conducted in accordance with the provisions of the Civil Code of the State of Washington, applicable to the exercise of powers of sale in mortgages and deeds of trust, or in any other manner permitted or provided by law. Declarant, through its duly authorized agents, shall have the power to bid on the liened property at any foreclosure sale and to acquire, lease, mortgage and convey the same. (c) Cure. IF a default for which a notice of claim of lien was filed is cured, Declarant shall file or record a recision of such notice, upon payment by the defaulting, Owner of the costs of preparing and filing or recording such recision, and other reasonable costs, interest or fees which have been incurred. -20- (d) Nonexclusive Remedy. The foregoing lien and the rights to foreclose thereunder, shall be in addition to, and not in substitution for, all other rights and remedies which any party may have hereunder and by law, including any suit to recover a money judgment for unpaid assessments. If any Owner shall fail to perform such maintenance and repair and, notwithstanding such failure, Declarant should fail to exercise its rights and remedies hereunder, then, any other Owner, after fifteen (15) days' prior written notice to Declarant and such delinquent Owner, shall have the right, but not the obligation, to perform such maintenance and repair and shall have the same rights and remedies with respect thereto as are provided herein to Declarant. 5.7 Taxes and Assessments. If an Owner fails to pay taxes or assessments on its lot which become a lien on any portion of subject property utilized for parking, service or loading areas, then any other Owner may pay such taxes or assessments, together with any interest, penalties and costs arising out of or related thereto, except while the validity thereof is being contested by judicial or administrative proceedings, and in such event the defaulting Owner obligated to pay such taxes or assessments shall promptly reimburse the other Owner for all such taxes or assessments, interest, penalties and costs paid or incurred by such other Owner and until such, reimbursement has been made the amount of the payment by such other Owner shall constitute a lien on and charge against the lot of the defaulting Owner subject and subordinate, however, to any deed of trust then outstanding affecting said lot. 5.8 Refuse Collection Areas. All outdoor refuse collection areas shall be visually screened so as not to be visible from neighboring property or streets. No refuse collection areas shall be permitted between a street and the front of a building. -21- 5.9 Repair of Buildings. No building or structure upon any lot shall be permitted to fall into disrepair, and each such building and structure shall at all times be kept in good condition and repair and adequately painted or otherwise finished. 5.10 Public Utilities. Declarant reserves the sole right to grant consents for the construction and operation of public utilities including, but not limited to, street railways, interurban or rapid transit, freight railways, poles or lines for electricity, telephone or telegraph, above or below ground conduits, and gas pipes in and upon any and all streets now existing or hereafter established upon which any portion of the subject property may now or hereafter front or abut. Declarant reserves the exclusive right to grant consents and to petition the proper authorities for any and all street improvements such as grading, seeding, tree planting, sidewalks, paving, sewer and water installation, whether it be on the surface or subsurface, which in the opinion of Declarant are necessary on or to the subject property. Notwithstanding the provisions of Section 3.2, Declarant reserves the exclusive right to approve above ground utility lines across the subject property or any portion thereof on a temporary basis for the purpose of construction, and such lines shall be permitted when required by a government agency. 5.11 Utility Lines and Antennas. No sewer, drainage or utility lines or wires or other devices for the communication or transmission of electric current, power, or signals including telephone, television, microwave or radio signals, shall be constructed, placed or maintained anywhere in or upon any portion of the subject property other than within buildings or structures unless the same shall be contained in conduits or cables constructed, placed or maintained underground or concealed in or under buildings or other structures. No antenna for the transmission or reception of telephone, television, microwave or radio signals shall be placed on any building or other improvement within the subject property -22- unless (a) such antenna shall be so located that it cannot be seen from any point at the ground level of the subject property or (b) the consent of Declarant shall first be obtained. Nothing contained herein shall be deemed to forbid the erection or use of temporary power or telephone facilities incidental to the construction or repair of buildings on the subject property. 5.12 Mechanical Equipment. All mechanical equipment, utility meters, storage tanks, air conditioning equipment and similar items shall be located in such a manner so not to be visible from neighboring property. 5.13 Mineral Exploration. No portion of the subject property shall be used in any manner to explore for or to remove any steam, heat, oil or other hydro-carbons, gravel , earth or any earth substances or other minerals of any kind, provided, however, that this shall not prevent the excavation of earth in connection with the grading or construction of improvements within the subject property. Water may be extracted to the extent permitted by the appropriate governmental agency. 5.14 Other Operations 'and Uses. Operations and uses which are neither specifically prohibited nor specifically authorized by this Declaration may be permitted in a specific case if operational plans and specifications are submitted to and approved in writing by Declarant in accordance with the procedures set forth in 3.0, of this Declaration. Approval or disapproval of such operational plans and specifications shall be based upon the effect of such operations or uses on other property subject to this Declaration or upon the occupants thereof, but shall be in the sole discretion of Declarant. 6.0 MODIFICATION AND REPEAL 6.1 Procedure. Except as otherwise provided in Section 6.2, this Declaration or any provision hereof, or any covenant, condition or restriction contained herein, may be. terminated, extended, modified or otherwise amended, as to the whole of the -23- subject property or any portion thereof, with the written consent of the Owners of eight percent (80%) of the subject property, based upon the number of square feet owned as compared to the total number of square feet subject to these conditions, covenants and restrictions (excluding dedicated streets); provide, however, that so long as Declarant owns at least twenty percent (20%) of the property subject to these conditions, covenants and restrictions, or for a period of fifteen (15) years from the effective date hereof, whichever period is shorter, no such termination, extension, modification or other amendment shall be effective until a proper instrument in writing has been executed, acknowledged and recorded. 6.2 Modification by Declarant. For so long as Declarant owns any interest (excepting a leasehold interest) in the subject property, or any part thereof, or for a period of fifteen (15) years from the effective date hereof, whichever period is shorter, Declarant acting alone may modify or amend the provisions of 3.0, 4.0 and 5.0; provided, however, that (a) any such modification or amendment must be within the spirit and overall intention of the development as set forth herein; (b) prior to any such modification or amendment Declarant shall obtain the approval of any governmental agency to such modification or amendment where such approval is necessary; and (c) any modification or amendment shall not provide for any type of improvements or use not presently permitted by this Declaration. No such modification or amendment shall be effective until the Owners have been given thirty (30) days' prior written notice of the proposed change, and a proper instrument in writing has been executed, acknowledged and recorded. 6.3 Governmental Regulation. All valid governmental enactments, ordinances and regulations are deemed to be a part of this Declaration and to the extent that they conflict with any provision, covenant, condition or restriction hereof, said conflicting governmental enactment, ordinance and regulation shall control and the • -24- provision, covenant, condition and restriction hereof in conflict therewith shall be deemed (a) amended to the extent necessary to bring it into conformity with said enactment, ordinance or regulation while still preserving the intent and spirit of the provision, covenant, condition or restriction; or (b) stricken here from should no amendment conforming to the governmental enactment, ordinance or regulation be capable of preserving the intent and spirit of said provision, covenant, condition or restriction. 7.0 ENFORCEMENT 7.1 Abatement and Suit. The Owner of each lot shall be primarily liable, and the Occupant, if any, secondarily liable for the violation or breach of any condition, covenant or restriction herein contained. Violation or breach of any condition, covenant or restriction herein contained shall give to Declarant, following thirty (30) days' written notice to the Owner or Occupant in question except in exigent circumstances, the right, privilege and license to enter upon the lot where said violation or breach exists and to summarily abate and remove, or abate or remove, at the expense of the Owner or Occupant thereof, any improvement, structure, thing or condition that may be or exist thereon contrary to the intent and meaning of the provisions hereof, or to prosecute a proceeding at law or in equity against the. person or persons who have violated or are attempting to violate any of these covenants, conditions or restrictions to enjoin or prevent them from doing so, to cause said violation to be remedied, or to recover damages for said violation. No such entry by Declarant or its agents shall be deemed a trespass, and neither Declarant nor its agents shall be subject to liability to the Owner or Occupant of said lot for such entry and any action taken to remedy or remove a violation. The cost of any abatement, remedy or removal hereunder shall be a binding personal obligation on any Owner or Occupant in violation of any provision of this -25- Declaration, as well as a lien (enforceable in the same manner as a mortgage) upon the lot in question. The lien provided for in this section shall not be valid as against a bona fide purchaser or mortgagee for value of the lot in question unless a suit to enforce said lien shall have been filed in a court of record in King County, Washington, prior to the recordation of the deed or mortgage conveying or encumbering the lot in question to such purchaser or mortgagee, respectively. 7.2 Right of Entry. During reasonable hours and upon reasonable notice, and subject to reasonable security requirements, Declarant, or its agents, shall have the right to enter upon and inspect any lot and the improvements thereon covered by this Declaration for the purpose of ascertaining whether or not the provisions of this Declaration have been or are being complied with, and neither Declarant nor its agents shall be deemed to have committed a trespass or other wrongful act by reason of such entry or inspection. 7.3 Deemed to Constitute A Nuisance. The result of every act or omission whereby any condition, covenant or restriction herein contained is violated in whole or in part is hereby declared to be and to constitute a nuisance, and every remedy allowed by law or in equity against an Owner or Occupant either public or private, shall be applicable against every such result and may be exercised by Declarant. 7.4 Attorney's Fees. In any legal or equitable proceeding for the enforcement of this Declaration or any provision hereof, whether it be an action for damages, declaratory relief or injunctive relief, or any other action, the losing party or parties shall pay the attorney fees of the prevailing party or parties, in such reasonable amount as shall be fixed by the court in such proceedings or in a separate action brought for that purpose. The prevailing party shall be entitled to said attorney's fees even though said proceeding is settled prior to judgment. -26- All remedies provided herein. or at law or in equity shall be cumulative and not exclusive. 7.5 Failure to Enforce is No Waiver. The failure of Declarant to enforce any requirement, restriction or standard herein contained shall in no event be deemed to be a waiver of the right to do so thereafter or in other cases, nor of the right to enforce any other restriction. 8.0 ASSIGNMENT Any and all of the rights, powers and reservations of Declarant herein contained may be assigned to any person, corporation or association which will assume the duties of Declarant pertaining to the particular rights, powers and reservations assigned, and upon any such person, corporation or association evidencing its consent in writing to accept such assignment and assume such duties, he or it shall , to 'the extent of such assignment, have the same rights and powers and be subject to, the same obligations and duties as are given to and assumed by Declarant herein. If at any time Declarant ceases to exist and has not made such an assignment, a successor to Declarant may be appointed in the same manner as this Declaration may be modified or amended under Section 6.1. Any assignment or appointment made under this article shall be in recordable form and shall be recorded. 9.0 CONSTRUCTIVE NOTICE AND ACCEPTANCE Every person or entity who now or hereafter owns, occupies or acquires any right, title or interest in or to any portion of the subject property is and shall be • conclusively deemed to have consented and agreed to every covenant, condition and restriction contained herein, whether or not any reference to this Declaration is contained in the instrument by which such person acquired an interest in the subject property. -27- 10.0 WAIVER Neither Declarant nor its successors or assigns shall be liable to any Owner or Occupant of the subject property. by reason of any mistake in judgment, negligence, nonfeasance, action or inaction or for the enforcement or failure to enforce any provision of this Declaration. Every Owner or Occupant of any of said property by acquiring its interest therein agrees that it will not bring any action or suit against Declarant to recover any such damages or to seek equitable relief because of same. 11.0 RUNS WITH LAND All covenants, conditions, restrictions and agreements herein contained are made for the direct, mutual and reciprocal benefit of each and every lot of the subject property; shall create mutual equitable servitudes upon each lot in favor of every other lot; shall create reciprocal rights and obligations between respective Owners and Occupants of all lots and privity of contract and estate between all grantees of said lots, their heirs, successors and assigns; and shall , as to the Owner and Occupant of each lot, his heirs, successors and assigns, operate as covenants running with the land, for the benefit of all other lots, except as provided otherwise herein. 12.0 RIGHTS OF MORTGAGEES No breach of any covenant, condition or restriction herein contained, or any enforcement thereof, shall defeat or render invalid the lien of any mortgage or deed of trust now or hereafter executed upon the subject property or a portion thereof, provided, however, that if any portion of said property is sold under a foreclosure of any mortgage or under the provisions of any deed of trust, any -28- purchaser at such sale and its successors and assigns shall hold any and all property so purchased subject to all of the covenants, conditions and restrictions contained in this Declaration. 13.0 CAPTIONS The captions of articles and sections herein are used for convenience only and are not intended to be a part of this Declaration or in any way to define, limit or describe the scope and intent of the particular article or section to which they refer. • 14.0 EFFECT OF VALIDATION If any provision of this Declaration is held to be invalid by any court, the invalidity of such provision shall not effect the validity of the remaining provisions hereof. DECLARANT J.A.G./Renton Properties Associates A Washington Partnership By: Alterra Corporation, a Washington Corporation, General Partner By: By: By: -29- 4. qM y ti • s•- • ' • • ' k Int ; ,t / 1 / I ...................:.. .4 v ...:::...........:.... t ::....:.:. -• '-...,..,600011.111 4 6. •k ter_ _ _� ` «�� �4 ... Its O ��+'!t 'ice• �' H • I 1 . .{1• I • I." •.4 D. LEGAL DESCRIPTIONS PARCEL A That portion of the south half of Section 13, Township 23 North, Range 4 East , V.M. . in King County, Washington; and That portion of Junction Addition to City of Seattle, according to plat ,recorded in Volume 12 of Plats, page 75, in King County, Washington, together with vacated streets adjoining which would attach to said premises by operation of law, and of C.E. Brownell 's Donation Claim No. 41 , described as follows: Beginning at the south quarter corner of said Section 13; thence N00'58'28"E along the north-south Centerline thereof 1092.82 feet; thence N68'03'54"E 224.45 feet; thence N80'04'48"E 232.00 feet; thence S42'06'08"E 87. 16 feet to the TRUE POINT OF BEGINNING; ' thence N42'06'08"W 87.16 feet; thence S80'04148'%, 232.00 feet; thence Nl2'01 'OO"W 40.75 feet; thence SZ59 '00"W 133.01 feet to a point of curve; thence along a curve to the right having a radius of 230.00 feet , through a central angle of 27'47'31" an arc distance of 111 .56 feet to a point of compound curvature; the center of said curve bears N15'46'31"E 160.00 feet; thence along said curve to the right, through a central angle of 70'48' 19" an arc distance of 197.73 feet; thence S82'15'00"W 67.68 feet; thence 531'32'22'Vl 71 .06 feet; thence N81'11 '35"W 193.00 feet; thence 582'15'00"W 92.99 feet; thence 535'29'30"V .143. 18 feet; thence N74'44'00"W 84.85 feet; thence S60' 16'00"W 67.00 feet; thence 512'16'00"E 97.35 feet to the north line of a tract of land described in EXHIBIT 5 to Agreement recorded under King County Recording No. 8301050539; thence 568'06'46"W along said northerly line 375.53 feet to the northerly line of a tract of land described in EXHIBIT 8 in said Agreement; thence northwesterly along said northerly line on a curve to the left, the center which bears west 195.01 feet, thru a central angle of 78'41 '24", an arc distance of 267.83 feet; thence N781'141 '24"W along .said northerly line 180.00 feet to an angle point in said northerly line; thence N33'00'54"W along said northerly line 109.47 feet to the south line of the. Burlington Northern Railroad Right•-of-Way, said point being a point on a curve, the center which bears S39'23'00"E 1853.00 feet; thence easterly along said southerly line and curve to the right, thru a central angle of 2'01 '59". an arc ' distance of 65.75 feet to a point of compound curve; thence continuing along EXHIBIT A: 1 of 5 said south fine on a curve to the right the center of which bears 537'21 'O1"E having a radius of 10543.00 feet, an arc distance of 186.51 feet through a central angle of O1'00'49" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears 536'20' 12"E having a radius of 1657.00 feet an arc distance of 193.93 feet through a central angle of 06'42'20" ' to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears S29'37'52"E having a radius of 6738.00 feet , an arc distance of 197.76 feet through a central angle of 01'40'54" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears S27'56'58"E having a radius of 1768.00 feet, an arc distance of 194.45 feet through a central angle of 06' 18'06" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears 521'38'52"E having a radius of 8603.00 feet, an arc distance of 204.54 feet through a central angle of 01'21 '44" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears S20'17'08"E having a radius of 1922. 10 feet, an arc distance of 178.79 feet through a central angle of 05'19'46" to a point of compound curve on the east line of said Charles Brownell Donation Land Claim No. 41 ; thence continuing along said south line on a curve to the right, the center of which bears S14'57'22"E having a radius of 2814.93 feet, an arc distance of 659.42 feet through a central angle of 13'25' 19" to a point of compound curve; thence continuing along said south line on a curve to the right, the center of which bears S01'32 '03"E having . a radius of 1165.09 feet, thru a central angle of 37'39' 19", an arc distance of 765.71 feet to a point which bears N41'28' 10"E from the TRUE POINT OF BEGINNING; thence 536'19'35"W 188.63 feet to a point on a curve, the center which bears 536'19'35"W 967.46 feet; thence northwesterly along said curve to the left, thru a central angle of 4'39'32", an arc distance of 78.67 feet ; thence 538'54 '22"W 451 .74 feet to a point on a curve, the center which bears 543'36'23"W 170.00 feet ; thence southeasterly along said curve to the right, thru a. central angle of 3'08'37", an arc distance of 9.33 feet; thence S43'15'00"E 20.74 feet; thence . 527'21 '32"tit 44.74 feet to the TRUE POINT OF BEGINNING. PARCEL B-1 That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M. in King County, Washington, of Junction Addition to the City of Seattle, according to the plat recorded in Volume 12 of Plats, page 75, records of said King County, and of C.E. Brownell 's Donation Claim No. 41 , described as follows: • Beginning at the south quarter corner of said Section 13; thence N00'58'28"E along the north-south centerline thereof 1092.82 feet; thence S68'03'54"W 351. 11 feet to the TRUE POINT OF BEGINNING; thence N68'03'54"E 575.56 feet; thence N12'01 '00"V 40.75 feet; thenci S77.59'00111 133.01 feet to a point of curve; thence along a curve to the right having a radius of 230.00 feet, through a central angle of 27'47' 31" an arc distance of'111.56 feet to a point of compound curvature; the center of said curve bears N15'46'31"E 160.00 feet; thence along said curve to the right, through a central angle of 70'48' 19" an arc distance of 197.73 feet; thence 582'15'00"W 67.68 feet; thence 531'32'22"W 71 .06 feet; thence N81'11 ' 35"W 193.00 feet; thence S82'15'OO"V 92.99 feet; thence S35'29'30"V 1143. 18 feet; thence N74'44'00"W 84. 85 feet; thence 560'16'00"W 67.00 feet; thence S12'16'0O':E 97.35 feet; thence N68'06'46"E 53.79 feet to a point which bears N72'04'34"W from the TRUE POINT OF BEGINNING; thence S72'04'34"E 389.92 feet to the TRUE POINT OF BEGINNING. EXHIBIT A: 2 of 5 PARCEL B-2 That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M. In King County, Washington and of Junction Addition to the City of Seattle, according to -plat recorded in Volume 12 of Plats, ,page 75, records of said King County, and of C.E. Brownell 's Donation Claim No. 41 described as follows: • Beginning at the south quarter corner of said Section 13; thence N00'58'28"E along the north-south centerline thereof 1092.82 feet; thence N68'03 '54"E 224.45 feet to the TRUE POINT OF BEGINNING; thence S68'03'54' W 575.56 feet; thence N72'04'34"W 389.92 feet; thence 568'06,46"v 429.32 feet; thence south 85.47 feet to a point of curve; thence on a curve to the left, having a radius of 60.00 feet, •thru a central angle of 126'52' 10", an arc distance of 132.86 feet; thence N53'07'50'1 199.18 feet to a point of curve; thence on a curve to the right, having a ►adius of 200.00 feet thru a central angle of 53`59'30", an arc distance of 188.47 feet; thence S72'52 '40"E 290.00 feet to a point of curve; thence on a curve to the left, having a radius of 197.00 feet, thru a central angle of 39'08'51", •an arc distance of 134.60 feet; thence 1467'58'29"E 380.92 feet; thence N31'27 ' 12"E 204.8.6 feet to the TRUE POINT OF BEGINNING. PARCEL B-3 That portion of the south half of Section 13, Township 23 North, Range 4 East, V.M. in King County, Washington; and of Junction Addition to the City of Seattle, according to the plat recorded in Volume 12 of Plats, page 75, records of said King County, together with vacated streets adjoining which would attach to said premises by opera- tion of Law; and of C.E. Brownell 's Donation Claim No. 41 , and of Tracts 25 and 26, Renton Shore Lands 2nd Supplemental Maps 1958, described as follows: Beginning at the south quarter corner of said Section 13; thence NO0'58'28"E along the north-south centerline thereof 1092.82 feet; thence N68'03 '54"E 224.45 feet to a point hereinafter called "Point A"; thence S68'03'54"w 575.56 feet; thence N72'04'34"V 389.92 feet; thence 568'06'46"V 429.32 feet to the TRUE POINT OF BEGINNING; thence south 85.47 feet to a point of curve; thence on a curve to the left, having a radius of 60.00 feet, thru a central angle of 126'52 ' 10", an arc distance of 132.86 feet; thence NS3'07'SO"E 199. 18 feet to a point of curve; thence on a curve to the right , having a radius -of 200.00 feet thru a central angle of 53'59'30", an arc distance of 188.47 feet; thence S72'52'40"E 290.00 feet to a point of curve; thence on a curve to the left having a radius of ,197.00 feet, thru a central angle of 39'08' 51", an arc distance of 134.60 feet; thence N67'58'29"E 380.92 feet; thence N31'27' 12"E 204.86 feet to aforementioned "Point A"; thence N80'04'48"E 232.00 feet; thence S42'06'08"E 215.00 feet; thence S31'14'05"W 358.99 feet; thence 547'10'O1"E 71 .34 feet; thence east 114.27 feet; thence south 68.91 feet to the southerly line of said Tract 25; thence along the southerly line of said Tracts 25 and 26, the following courses and distances: N88'15'00"W 180.65 feet; N33'07 '25"W 154.51 feet; N27'21 '32"E 387 .32 feet; N83'17'25"W 171 .17 feet; S46'22'22"W 324.66 feet; S72'37'52"W 458.93 feet; N70'54'02"v 354.53 feet; 573'56'O1"W 130.08 feet; and S41' 16'07"W 316. 18 feet to the north boundary of a tract of land deeded to King County and described under King County Receiving Number 6607786; thence westerly along said north boundary on a curve to the left, the center which bears S39'41 '39"W 627.46 feet thru a central angle of 39'41 '39', an arc distance of 434.70 feet; thence north along said north boundary 25.00 feet; thence west along said north boundary 245.69 feet; thence north 156. 13 feet; thence N50'39' 19"E 330.21 feet; thence S78'41 '24"E 180.00 feet to a point of curve; thence on a curve to the right, having a radius of 195.01 feet , thru a central angle of 78.41 !24", an arc distance of 267.83 feet to the TRUE POINT OF BEGINNING. EXHIBIT A: 3 of 5 PARCEL B-4 That portion of the southwest quarter of Section 13, Township 23 North, Range 4 East , V.M. in King County, Washington and that portion of Junction Addition to City of Seattle, according to plat recorded In Volume 12 of Plats, page 75, records of said King. County, together with vacated streets adjoining which would attach to said premises by operation of law, and of C.E. Srownell 's Donation Clain No. ll , described as follows: Beginning at the south quarter corner of sa14 Section 13; thence N00'58'28"E along the north-south centerline thereof 884.84 feet to the southeast corner of Tract 26, Renton Shorelands Second Supplemental Maps 195$; thence S72'37'52'111 382.60 feet to an angle point In the south line of said Tract 26; thence N70'5F102'y 354.53 feat to an angle point In the south line of said Tract 26; thence 573'56'0I'V 130.08 feet to an angle point in the south line of said Tract 26; thence S41'16'07"w along the south line of said Tract 26 a distance of 316. 18 feet to the north boundary of a tract of land deeded to King County and described under King County Recording Number 6607786; thence westerly along said north boundary on a curve to the left, the center which bears 539'41 '39"W 627.46 feet, thru a central angle of 39'41 '39"; an arc distance of 434.70 feet; thence north along said north boundary 25.00 feet; thence west along said north boundary 245.69 feet to the TRUE POINT OF BEGINNING; thence north 156. 13 feet; thence N50'39' 19"E 330.21 feet; thence N33'00'54"V 109.47 feet to the southerly margin of the Burlington Northern Railroad Right-of-Way, said point being a point on a curve, the center which bears S39'23'00"E 1853.00 feet; thence westerly along said southerly margin and curve to the left, thru a central angle of 3'59' 19", en arc distance of 129.00 feet to a pointof compound curve, the center of said curve bears S43'22' 19"E 4030.00 feet; thence westerly along said southerly margin and curve to the left, thru a central angle of 2'48'32", an arc distance of 197.57 feet to a point of tangency; thence 543'49'09"W along said south margin 271 .00 feet to a point of curve; thence on a curve to the right along said southerly margin, having a radius of 1571 .00 feet, thru a central angle of 7'32'02", an arc distance of 206.57 feet to a point of compound curve, the center which bears N38'38149"w 727.00 feet; thence westerly along said southerly margin and curve to the right, thru a central angle of 16'55'35", an arc distance of 214.77 feet to a point of caapound -curve, the center which bears N21'43 ' 14"w 1055.00 feet; thence westerly along said southerly Margin and curve to the right, thru a central angle of 11'2 ,'08", an arc distance of 209.95 feet to a point of compound curve; the center which bears N10' 19'06"W 696.00 feet; thence westerly along said southerly margin and curve to the right thru a central of 3'44'25", an arc distance of 45..43 feet to the easterly margin of the Charles Monster County Road; thence S34' 18'31"E along said easterly margin 43.46 feet to the north boundary of said tract deeded to King County and described under King County Record- ing Number 6607786; thence N74.13r19"E along said north boundary 443 .31 feet; thence N59'53'47"E along said north boundary 377.52 feet; thence east along said north boundary 35.00 feet to the TRUE POINT OF BEGINNING. PARCEL C That portion of Tract 25, Renton Shorelands Second Supplemental and that portion of the southeast quarter of Section 13, Township 23 North, Range 4 East , V.M. , and that portion• of the southwest quarter of Section 18, Township 23 North , Range 4 East, V.M. , all in King County, Washington described as follows: EXHIBIT A: 4 of 5 Beginning at the south quarter corner of said Section 13; . thence N00'58'28"E along the north-south centerline thereof 1092.82 feet; thence N68'03'54"E 224.45 feet; thence N80'04'48"E 232.00 feet; thence S42'06'08"E 87. 16 feet to the TRUE POINT OF BEGINNING; thence S42'06'08"E 127.84 feet; thence S31'14'05' W 358.99 feet; thence 547'10'O1"E 71 .34 feet; thence east 114.27 feet; thence south 68.91 feet to the south line of said Tract 25; thence S88'15'00"E along said south line and the north line of the south 650.00 feet of the southeast quarter of said Section 13, a distance of 2080.76 feet to the east line of. said Section 13; thence 589'10'25"E along the north line of the south 650.00 feet of the southwest quarter of said Section 18, a distance of 81.57 feet to the south line of the Burlington Northern Railroad Right-of-Way; thence N71'29'03"V along said south line 85.52 feet to the east line of said Section 13; thence N71'29'03"W along said south line 826.56 feet to a point of curve; thence on a curve to the right along said south line, the center which bears N18'30'57"E 1005.37 feet, thru a central angle of 33'54'00", an arc distance of 594.84 feet; thence N37'35'03"W along said south line 308.70 feet to a point of curve; thence on a curve to the left, along said south line, the center which bears 552'24'S7"W 1165.09 feet, thru a central angle of 16'17'41", an arc distance of 331 .35 feet to a point ►which bears N41'28' 10"E from the TRUE POINT OF BEGINNING; thence S36'19'35"11 188.63 feet to a point on a curve, the canter which bears S36'19'35"W 967.46 feet; thence northwesterly along said curve to the left, thru a central angle of 4'39'32", an arc distance of 78.67 feet; thence 538'54'22'1I 451 .74 feet to a point on a curve, the canter which bears S43'36'23"W 170.00 feet; thence southeasterly along said curve to the right, thru a central angle of 3'08'37", an arc distance of 9.33 feet; thence S43'15'00""t 20.74 feet; thence S27'21 '32"W 44.74 feet to the TRUE POINT OF BEGINNING. EXHIBIT A: 5 of 5 GRADING & FILLING DRAWINGS �.-��� n p-ra.a .. —� _•. .0 +•a,• ,•._ y y • 1. e,,....-� f,;;N/r.-,, *ll is wpm l� 4p-' s fl * NOtOG LEGND ,p r.*. a-y.0.� >'f,:',,C rlrtx Vdxr p�'R4� a+c!,�•' +\ ,fy .I �� - No r a I %� ( 0.' "" '+oc r • \ REMOVE RA/LROAD TRACKS 14GIEEMEQI ® '�. / `- -0>r. �``' r� "' PROPERTY UNE - � V —ter� _ :';'.';• '.�,�_.Y` `=ems•.` •�.�+ a,'-,i_ - W/TN/N PROPERTY L/NES �,`� '����s�, '1 '' +i_ ��`=t'.—� "' / EROSION ' ���" }'- �, ` ERO5/ON CONTROL FENCE _ CONTROL FENCE 4 ' nj 1;a., _II ;' - a _ 'e eel /n to ,' /0. ' •Vi DITCH • r y>•;.a,ry• v>,.; / TF:APEZOID DITCH *euchre, 'j '�/' , [GaSiEw tt VICINITY MAP ,D ,��/M CRTED F/�i' I / EXISTING DITCH EX/5T/N ' CUL�/ERT Si CpROUNO SURFACE / // M.= N01�: rL eE WDYEAI FIL R-FAB.R1G UNDO ROAD, To q2 30 � // ,Y• I g.ACH SIDE✓ OF G N41ER-L-INE OF ROAD. - •♦` 09' EXISTING GRADE _— O TYPICAL FILL SECTION / / .591 (SCREENED) to NTS % /� �59�1 PFOPOSED GRADE(INTERIM) �� .ye 3a ////' • // BLACKRIVER BOULEVARD / RIGHT OF WAY GENERAL NOTES S,, ,/ ' 5' 1. CONSTRUCTION SHALL CONFORM TO 'STANDARD SPECIFICATIONS FOR � +y'; �� i MUNICIPAL PUBLIC WORKS CONSTRUCTION,' 1981 EDITION, WASHINGTON // /'' ," • C STATE CHAPTER AMERICAN PUBLIC FORKS. , ',� ' , 1; ' !r• ,3 2. RAILROAD TRACKS WITHIN PROPERTY LIMITS SHALL BE REMOVED. /���, i•^ I 3. CUT SLOPES ALONG ADJACENT TO RAILROAD ALIGNMENT SHALL NOT BE /;;;.1,�,.,.° GREATER THAN 3 HORIZONTAL TO 1 VERTICAL. //,� i .. 5 T /i,+ • - /G 4. FILL SLOPES SHALL BE CONSTRUCTED AT 2 HORIZONTAL TO 1 VERTICAL. C. // /; , /�� 11 5. 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D.O/00 TO DAYLIGHT ,•./�y➢ yo e .1`•',. fe M.:; " _.__ I� /N TRENCH• .o EX/ST/NG STORM , • - `\ DRAIN TRENCH '� ;' ' •• GRADING&FILLING • r• ..8412 4 s 54129/!4• • 1n ._ ___ 6 Key Map 20 0 40 80 ! k._ — \ i " • '\() 1 .. . ,:..,-•,. .. ra •,,*:‘, 0 -':;.,, Y...:.::: / a -� I j j I ! F 0�Cry /. I ° / ' ' / 11 l' ' j �1 I ,r,' /'- i--- • — / I li r li I �: ) ... _ . , ,, , . ,,,...._ , -- .‘• ° • 7,, ' .. 11 • '' i ' / / r. ,„c,_ °' , Ir 4 ,.., ii! '. . , , , . , / • • r ;�' / r , \ ii, • %,: • • 1 1 I / '‘. / 1 \ - - -' ,•ill. i' // l3P 1 .i.,:o.,,;,r,:25;:' /'''' , • .-- . 1 /,/':•:1,// // 0.°' //. : .. [ / , / , ,,---)) ,/ C'',,/ / 1 > IA// . •'' --' • ,, , ,w/ 7/ (14; o 0 , i %% 1 „n W N' , A /r co • )//// ,ii:// . _ , ...,.• . • I. rl/ i l8 $• / y ty tip' . i i! // N A / . b • '• =ate: / ,' i // iii p - • it r' a // ;;01, i. . . :, ;.'. . ,, ,..., ,,,,:-4-'-,.//''':':',"..:.---:„/.'::' '// . ''' '' ' • %k 7/1,,Alf:<,'\', •: ,..., / •' --- / / .' ,c)" I m / /. '''`f' ��'• .-0` • /. /." s�'.�9/ roi / i; ------- //: • ....-a� y/,''ti 8 ...y.... ..6' ..-..;' ///' -,,.. . II '' /', ' •i �j�.. //i • 3 ..,ri4.:...I.i.,.:•';':;.-..f. • s. .•:,„2;',.::::::::"- .,. ',,,/, '-':-„ oi ,/,-/A---, , 1. ti . Pr .m O - �a $ o BLACKRIVER TECHNOLOGY PARK . ' 0 • 29 .ALTERRA CORPORATION a :� •:' . 710 CHERRY STREET SEATTLE, WASHINGTON r ri ,� s; ;f RENTON, WASHINGTON ^,�' tiT ' ' • • • 'o , (o//// oc• -••••• ,./:. . r ''''\\ V.' \: n /,,V,\Iff•°*- \_ 4 I i// -ea- •rci I///1"e,"7:''''',/' // / //)'-'' . •. . t : if_' i ;/ / I I 7 /,', // b )//////r,/ /,/ .b ir,eii a i / . -/ / /-y 'il ' .. '''\ '' ,6n / '1'7' P / '1'... ' 7 '.7$/,,,.:., \Y°', ////.// //' 7/7 � I i f/� yT i'/ f a:% , / ;•VN rn - / rn v.r m �y O: %I \ 1-,1RI 2 / .. p \ / m \ y \ / / J� •%/ I° -\r r` .,1 / /' fi:;:.: /1r '7.•'',. :,,,,, I • 1.4jj; � ;i1-4A j, ;' 11I '. / ; '''',/./:;' '/ '.. . . ' \ / /ZcH � i /m ..I • o ., .. . i / li,,, , , p ... . a 2 I 0 1. ""/l I q I:, r i/!r' �Ir rl , • O K. /1 -/•,`:Il'i4 .l 11 I Y N /j' i';'l l i s ,,,,•r 'J..; / l�-r \ Ep�I j\p,'1 a Ierr tIl is !l1I E I is r ' ,- .O� I ''5 d;�f1ii Jill/ '.,, ��. J �n Jill / c; 1-,-i / ,;. / �'ai l ' i:' % a' p i 1 �.,-I . ;i /,r, �• %o ,0n g I i / ri / ` /a , :/ . H i • 2_4 //// , • • F. t IFi ;: �' ' //4 1,, • • 0O f 'j' II. •Ixy % /' /O y : / •a, y "C Z // l i i"/%' ' z • ', . /i;/ // PI iT' �// ati '�'//' 1 ,�=�- l% / l/I A IC';1 g tr•1;1 if ) ii j /; �F k/ p 7' k- ...";:', 44i7 ''' .. ' •. i',/''.f.,... \ / I a, 1 \! /- , i Al —�T—. _ _____:f O- y� t/\ /,.,/ '� - N:'O//'27.,E " _.—_ 1�-_IJ9i o o'i:fir -/ ._. -Z-`A__-- 4 -� , ilk ., „ til ',/ .r/ . ,/ , I.[-' 'v ,, %I., / ;,j// Y g �/li1 T1 d r I g 6" BLACKRIVER TECHNOLOGY PARK Q ` �* Qp ALTERRA CORPORATION w = ,. R. 710 CHERRY STREET SEATTLE, WASHINGTON r '_ • RENT�N :WASHIN�'�C1N _�s .. . I EXISTING CULVERT PEAK • • ' - DISCHARGE 4 CFS - ...... ........... I rno-�Q .tird co/others ossocotes 0 . -. I NOTE:EPOSION ; — ROW \\ CONSTRUCTED TRA�ALONG FENCE ALL FIL BE -- SLOPES eg47F1',4 PROPERTY L/NE, , EXIST/NG CULVERT PEAK / —��/ WEST EROS/ON- DN.ARGE 7 CFS 4K/SC CONTROL D/7L'N • �/ 5��/= � SLOPE'e0.00>7 \ onolyvs.pkrrvg;cni dox_7n. p �, WASHINGTON J / ..V•DITCH-) `� I/ �� WI•TE• o /2"CMP Ii ` Irecr RICH ' A.CAROTHERS •'` EROSION ` -Ea \ ` TE Na v (�) CONTROL FENCE j WEST SEDIMENTATION • 0101.0 CONTROL POND TEMPORARY EAST/ WEST TOTAL D/SCHARGE \CENTE2 ERGSVOA/'\, /V L" / / 4+7r2.9 /39 CFS SO o ;t TCH WEST EROS/ON POND SED/MENTAT/ON ``��L L Oyu �'--I�YTJ� \ CGWT.ECiL DITCH K" ...) S=0.0017 EX/ST/NCT CULVERT L-_ \��� 0MPORAR (..--4P4EAlec DISCHARGE 1r/' t/ F.S L`) ;"'30E' TER SED/ZfE T/ON R �P4W4� (CNG) fi s NTROLPoND �fi•// �(G=C AC @ 2.3Q CFS \` \t ��a"' 1�•9��..O CIA. _ .. .nm..n..... /AC Cv 0.22 CFS I,I � "�... — / DISCHARGE TD .•.•».•. .•.•.«.. .•»».�� "t-Yfi W"Yr. rif�f- T— / 'l BLACK.e/VE.e �EX/i7. DITCH. EST/MATED PROPOSED DITCH \✓✓/ CAPACITY 50 TO 70 CTS. TO BE CONSTRUCTED EX/5T, DITCH ESTIMATED BY OTHERS(CHG) CAPACITY /00 TO/30 CFS EROSION CONTROL PLAN . GEOTEXTILEN (To 2I5R6ED NTS ,Sipe.) • �L V 4 kP+9HED GGRAVSL ICC N /� S .� • . 3/4"WASHED GRAVEL Q5'GALV. OR ENDS TO BE WELDED ii� NON-CORROSIVE .1 ,' BOLTS AND NU75 TO 0.75'D/A. FRAME G' (011 PLACE SUPPORTS ,•sue"'� 0 G TO 8 FEET O.C. _• � TRASH ACREEN '--`� Z SEE L7ETA/L EROSION CONTROL FENCE • _=� , 0.75"oiA. I n'II'il ION■ ..I Z Section NTS �_• I fill i!f 0..75-DIA. 0 Z w MAX. 3'SPACING FRAME A. • ---- = 0 3 Z O _ Plan 0 <J /R - 2 2 s Plan W I v , /may,, . _ s I— O w _ Z a °-co _ ,', CC • _ �c - TRASH SCREEN , 3• � V�ki Q : 31 1 TRAPEZOIDAL DITCH , , IVp I '°8 --�. �C Q ., zta . Section NTS IT.:®. •:: : __ D2 1 W LO N _ r'.�I4'WASHED GRAVEL STRIPS WELD TO ALL STEEL AOR75 MUST `U Z $ �r 0.75'O/A. FRAME IL BE GALVANIZED AND 1—' '• .SPACE UNIFORMLY ' ASPHALT COATED J Q W o g,ao "' a (TREATMENT , OR /Y1 r PERFORATED BETTER). �Y ^ Y. E. CMP PIPE Section Elevation SURFACE WATER .. 11 1� /EROSION CONTROL SEDIMENTATION POND OUTLET �-8412 TRASH SCREEN lii2 /O•' SLOPE OF TCH C1 NTS NTS WRAC DI Q QR0/ FT. (1) "V" DITCH - Section NTS PRELIMINARY PLAT DRAWINGS 1------- — r i i -1.-'- --__.-- ---- -."„!-----j--...=--,- ------7;_-..14 ::„;:- if_.--,'---,.. : : • _t- ,,,,,., 4-....?itai;-,--,:r.-7:',f, 4,2, 1 ., . , .. ,......, .I 0" rca_ IIV , %.11011- : 7.--._1----=,!--,-- ---- '• ..,`,4010 .:_:_:.--------------7-;--------2;:::--• .-- G-1 ' N\, , • ..,t7 4: 1 • . . .. , - . rry.nosi:oromers 0_,,,:0435. r. ' • - ---HL 1.--(:) ..?:. 11``,1,,, .:-:----.....„,-;:.--- ":".--...;7 '''..-:::-:::: ':..'; • ._:- ,' '-...........:":'''''"---''',-.'""'.•:".""':":,-.-1-------- --------...._-• ...\-....;:-...-1,,,,- --..-,,,.. i 1. - ,....f:_ , // .... , .. ,- ""-- -',.' -*•: ,'''=,:,... <- '; , _ _ :,„..,,„ -, - . . . ., '42 . _• , '4- " :-.1- . :':' ' ' •C--KRIVER 2 ' •. , siogi 0 .,r.i.z.:::,---i-,----:,:-.7-, _.;4,,,,e . . . . . • - • , , • ....,„. -- _ - , , _,_,.___.,.... L,,,..t . •... ,.. ,/,'" •-•:', - - -- EC Nis L 6 Y 'PAHA— __,._ 41106..gazit.- .4_ iffgai.r_eq gw.-- - . LEGEND d/70,,I*-4,K.ntft. . • orrok.,.,542unnry coicSosrgn.TTTTT OF „ R-2 /64% 7.,rimi-o-p-42 l:„Pipti - , .,, ,, WASHINGTON ' ' . , '''..I.I.. Z'." ' ',...,';"4'--.•-;`4$,,,,,:— ` z, -, - - •-•1---,,._ .-.. . foestif:,',L,-444;aziel f if f /- Total Site Boundary ___x____ EGIST Elm.T, (screened) _ .. o • RICHARD A.C.AROTNERS, Developable Area --— CUITIFIGATI NA 27 '.. 33Z/7/z / (screened) '`,. • , • t "“-- \ ' . -1 ,- , ..;,, Boundary ,...ct 4 i‘i.,..----T ".• 1 , _p -_-_,,,•`-5--r•-• -;.---,.-...-- ..!::- - . / // 4 - . Lot Lines ----- --1-'5',.-4-1.• -1-.._ 7.:-..._„, .4 \ ., .:...- • -•• , ,... ---..,.7.-„i ,.. •.,.... ., . ..,.... .._: ,,,, , -7- .' , . // -,--2__ I 1 y 1 ( 11 / eV.- /il. •-,''. r' Lanescape Easement , , .....::: . . ____ __ . , , „ ,.,/ ,/ , -, ..)." 1 ___....._..._ - -----Z;;;• \• 's- \ 7- i 1 ' -----i---I---F-- C... ..-..''''-''.--- -..-.--7-t-. ...... - .'. = .........---7---- -'—'--.7.; Road Centerline • . ZONING (- f& VICINITl MAP 200 400 ,,,-- --- •;.: ,.,- Lot Number r :. .840 A. > ; ' !' i..19 --- • -Th Utilities v•-;',, ____-•--- f.'/ .• .. ,. , Existinv: • Storm Ditch • / ', Proposed , 7':./-- ,..' ,-<;-' ' ' • ";,-.:-- - ' •' ...-:, ,,, SS tt oorr nn il DD rain taci nh • Water MIIII•Mal=•=1••••111M .. w . , '''‘;':''; tiCtSanitary Sewer - __ -_, 1 '';---7-...------ , ,••-<-1i-l-°3 ." Z -"‘ 31,;- -:•'''' z' 0. ------;. _„/" .,„--"(;.Z • , ,, SITE DATA _ - , __-- -.. ,------ -:--- , :- /z >,- _ ,,Z,2/„-- • ,.-- , .0 _ -...-- . .;./ LI Z Building Lots 1-46 45.861 Acres o •, - .- • , :_,_',2-%.7-• 0 F- Roadway R.O.W. 5.375 Acres .1 2 , • „_-__>-_-------- __--- - 0 R 4..< ____,------ ...-• ,-- 4' . -:- '' 'r''./ /- ,/' Easements Pedestrian&MAY .536 Acres .... Zen ,------ _„--'----[ ,.. , / _____._!„....-.- -_----..----- ,,,,-___,,..........._-_:-- - ..„-; • 0,1 Z .., 0.--." --- •-..,...,---0 ,, ,„,...,_ .. _ ,..... -____-___----_---- - • ____.-- ___-_, Greenbelt Property /Inc1.19.388 Acres 1—7. F• 0 !, - ,,,k s c -3, _ • ' • / 1:::. ------------ ...':-,----- - .- '-;..:;.-----' •,' ,10?"5 TO n' /," ,: ------- -----::--1 --- -- ...,--- - ..-'-'-'' Flood Control Property & . --\._-.7.,.a n __._-,•-: -. --_- -_ - _-_---;___.-- LLI cc r 0 , City of Renton Property '" ..k.1.\-3' \-::;" 74"3 3 ,"'•' .-_,..„,...r..--:-'-:"-- I°--'s, .- ------'-- - - -_-..- _ - -------:-.-_-_--,:, al CO :D r;_.' \ ,-' 'A 't. i'1•1'....„------ .......'. .-'. --.\ -.,...___-------------- -- -- - ___...------------ ___---- ".'-------- , CC cc i_ u) ‘-^ \,-- ',\ ''' , _,..--• .,,,\_-_ --- _ :_-____ __- •-___---,- 510 ""` ' ' .; ''' •-1'-:---r---,-- 7—L-- i__---------— Total 71.16 Acres Ill 0_ -_- - -_-.---=-1. ----''' 0 ce ' . I-. •'.' \.y.,‘"!;‘ ,,- , -io--",2,717--__- -,s• ':•-(!:%..0."' ',', :-;---- ' ',.. . Road R.O.W. 7.5% of Total Area cc tr• Z t %CC cc 0 .... w Roadway Pavement 5.4% of Total Area I.L.1 \ N. ,-' \-y .. ,•',,.,-, ,.. t --20 --• 0 to PRELIMINARY PLAT, 1.,.• glik b...$412 ® ---77----Q .- -- — "• 20..., . . N r. , ..... .o4 .',... ,. Cr...,, Cts.,/.4D-'/L.-ca. ...-”flci• 1•1111 M=INEMMI . 20 0 40 80 Key Map `'i,, End . 9r• i .•� r • \\ e. \ 4_\ .. W S x / .\,'"-'2\\ • I • -,/ cry /' _ / ,1 �• "( ' -„ , I ///'''AAA )�` ^ \ ' 1 • / ON % \ .. \• \,• , 7 \ 14‘ ...1! , . • (K ,. \' s s a • 'X,, \ -•' \ 03 )H.,'E\ ft • ALI4 01 MI 01 • r t' BLACKRIVER TECHNOLOGY PARK ... 0 ALTERRA CORPORATION Z Iii 11 n T. 710 CHERRY STREET SEATTLE, WASHINGTON ay0 .. , .. i� ° °w - RENTON, WASHINGTON • \o\ • . bib ii • [ • . • -,, ...,..:2,,,,-,..,... ,.., \ .. :i."'%';,„. \.,...s .„..,.. ...„. \ 'S'f v\ '`\� \L \\ .,- • • so 0 ai ‘\\'\i. 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KING COUNTY °,1 L�y , D•• ��• ®, 1/4 SECTIONS :n y•�,.. . •••°>TRACT 31 B '> < ' er • .,r TRACT �29 - pP 2�.v'.fe= ' J't> ' • go ��� �i� r.-eAt4 ..+ 3Zf' •' `r r,zn : ♦ RENTON S'2 G'( r!i ^r_ e'^ 2m5' ahC�1 ������� eio/e� .( !•6 . • :j0° j' s• l TRACT 30 .ez .DPP �. r., , , [ DH ..... e;! .�",•1 "K fr If�. r;,''y ' •°? �" • +•dri..,s' z '-^.. •po = ♦ ,T' A ,.f 31 %,,r • 0�..ti•., r,, - �B •i. I i 's Ly.�� •>,,� , go.s' 3 rC - e.Y.r MC ,� - /�• _ 1 CHAS. MONSTER RD. SW •,m.�.. ,0 0 �> , 4 I ITT NV, _ I ,o •iP a Q'.• ...� �.._ •• r r ig:.i!•n s•:., T..•e weaago.. ' � '•'•s 'O2` 'La „S AC. I GI }i •..'i a ~• -a.-- • ' 1'"wo ���� TRACT A ° I w. • .I - �� �•�• 50 0 100 200 . : • . , • . . . . , . „, • ' o'''''' ._, , ,.,.., . '...... es Igo- :30 ...,,,.) , 7--.. ." i• ,7 to 6.0 4 ..$0 . . - • ' 0 ' .*'''. -*V'0 -4-''9 P..0.11).-,7 I. ..... , . . .. re , ' .° 29 00' ,P"1.- ,. ., •, . , • rca: • ,0,. ..:,,./.:. -•:--7,r*--- i .,,.i -;.-•-- ,----,„s-Iv. - - '''- .•!' i‘21..::° " e '.."1'3:k°. 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".'.'7-'„ . \ S i. ) , .. 7 2S'.-1:'..•-,:'.•.,'4,4:;-.--.':,:7'--0.'''-.,,;;::.f.-_;.-•'.'''S:l.',.:-.e'',:41.•,„..::.'':,!:7"<--.4::.:.,.;-,:'i7'-',:'-.-_1,:L-,.;::'%,.-•'.::.i:.,...,•','_:'-:.•,"i 1.7-:.."-;••"'':':.:,.i_ BL•;,7:.f;•.-z'':,,-.'•.•:'',••:-•6 ,•.'A`'-.t:,":: -::S-C•e .'-,.',",,•:,:,•0:. -;.K ,-;:c;•:.---„4r':,,'2.„';:•-.',.:,.:.:':.,R';-:L,-:.,. IV:4:•.,,,f1?:,1',..",::::•"1`.•,,.,-E•:,•.''‘,-,:':'.,•',•;,.,•.2`I:•1.R =,',';,:,-:A-,:•':.•.,f TECHNOLOGY,:'.::.-•.-'.,:'",-:•:'••'.PARK:."-:,±•;=:':,';:',.,:_,:,:':.;,-:::Y:i1,,",::,,,•:'.-:'.-,-.:::.'','•',;',•1'::;.,'-,,'j:','.-:',;'.:':;:•''::.:,5-:,.!:,:i:':„-.--.-:-',:_:---.•:-'-•-,:,,.-':.,:,'.:.':.'',-,.•:,,--•:,.,.:'„‘"•'.N;,',•,:S•"-,,-:.'r_'''''•'.:\-_•:..,:,..:„:'.,''-::z,''`:'''I..:,,,,:•':.',.'-••':-''i'. -,,,,,,.--.\1.„..t:,--:.•i,.''ro- ,-,,\'\• _ '. 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'' I• ' '''''• r f",'.:'':',----:.::--:-.- :-','„i''.:•-.;',&','..,-", :;-.' ,:• :.-2.7.'•.".., ,.,':,:-..:';•-L..-..', -:.f•;.;•.';....-;;;::;'• '-.„ !I •.-001.,,-,T)::,--,A:,,,, ,-:,.,,,,,:„,. 11J _1 -;,..,..-,, n7-.:_%,-_ -.,:,c :-.-,:., :, ,-,. -.,:.....,,,,,,,:, ,,, :f .,H.,:,,.-..,,,.: ,.,:_..,,•.:',,...-..,,,,/,-.3:.:...:,::,,,,,,,,,,:,,::- ,,,: „.--;•.: :--',:.,::- ;:t2.:•';'. ri,..--,, et Boundary ...,...:.5.1,-..-.:,•„x:-v:-,„-.,;_:2-,--;,-,-.-:-., . , v..-:,-.:-.,- ,:,....,,-;-....:,.--,- - -..-,.;...,.....J.7.-.4i-... -litr,.,..7,• . t : „ - . ,,:.,.,;,.„..- • . • ..._ .,,,,,,,,-..., ,„...,-, ':,,,,-....-..-;../:=;:,-?„.: --,.,.,;,-.,,,_ ',-,-.--.,-;.',..,':,..:-.. ..;',1-1.--J-- „ - - -- • 2- r ,-. ; • - 1•08-,S 4f- . III.27 '." 40 I° iv DETENTION BASIN / 4.....• ,,, __ t 2 ::;•:-..f..4i F.;:r4,4tS:0 \ • %'t ii-4------ ------A I I I ,40 1,,...f.:-. ,,,ez.o*,.- . . 4 1 * * e KING COUNTY 1/4 SECTIONS • ,...eau S 1,00E E 7.0.TO I • ' " . , i .1 .. 8/8/84 e• .... DH 0 % \? ) I 1 9188 00 4 0 2 ..,- .,- /// '1.• 101..!;6167 dad RAC ••••.• I R VOL 122/98 --,......... N , A k , / \ • i viNi AL CENTER 1 / .. a .....,ve '41... •4 _- • k, -TEC --C I 5 ai --'----0 .; - maiti. 1 0 ) VP I • 4, • 4 14 46• 1210 WA SH iN GT°N I ,„ a , ! 1 , ••,. ,:.• • .... 14,4 740v-- ..6-:.- ?- I. e •01.mo....... 4"-rmii. . /p,t, • • ..... 300' Distande Arc , vs .ote. 11•• N 11121 •• 50 ' 0 100 200 • • . . . • . . N • . • _ . . , • . . . . ,,,, . , . . • . . . . . . . . . rca ' . . • . •Mtl➢;t7::f0[It..R ris•1w�t65 . . . . . . ., . . . .. • . • • , . • . • ... _ • . . . . „ „ ,, , . . • -LEGAL DESCRIPTIONS . . . on01.0.pk_Trogo•OzOogn d ma~eon, ent STATE OF PARCEL. A'.- PARCEL H-1 +wsrnNcrosf • rsrwED - - PARCEL' B-4 [T�cr That portion of-the south MI/•or Section 13, Township 23 North, Lange 4 E+st, U.N.. Tha t,port ton of the south half of Section I), ;township 23 Ibrth, Range 1-test V,N,' • •y •1 •r•at�� �n. portion o/•ton southwest quarter Section I). Twnsn lD.2) North, Range 1 East, in King County,era sAington; and - In Ring County, Washington, o/_Junction Addition to the City of Seattle, according _ - a.m. In King County. Washington end that portion of Junction Addition to City of - '"A_GMOTx4ts to the plat recorded In Volume 12 of Plats, peke 75, records of said Ring County, Seatt le,•accords to plot r•cordd ln'6p;•wee 12 of Plots, That portion of Junction Addition to City.of.Seattle, according to plat recorded inand of C.F. Brosannil'• Donation Claim Mo. 41,' et p page 75, records of said - trim larEss+D Yo tome 12 0l listenUescrlbed es follows: R{ Corn[ 'attach ' • "g y, together Acr with vacated :a d3olnleg MICA would o. to said-. page 75, in tack County,, Vaecise. by together with law. d - premises by op•ntton of law. and-of C.C. 6ro.n•11•s Donation Claim No. 11, described Joining'which routed attach to said premises DY PDeration of tar, and of 'Beginning et the south quarter corner of ■aid'1'eetlon'l7; thence X00'S8'2B"[ along 'as follows: C.E. Broenell's Donation Claim ono. 41, described as tellers: the north-south-centerline thereof 1092.82 felt; thence 368'03'54"w 351.11 feet to - • the TRUE POINT OF BEGINNING; thence N68.03.5h.! 575.56 feet; thence N12'01'00'1/ - Beginning at the south quarter corner of:said Section 13; thence 1100'58'28"E along Beginning at the south quarter corner of said.Section 13; thence Io0•5e'78"[ along . 40.75 feet; thence S77'59'00'V 133.01 feet to*point of curve; thence along-a - - the north-south centerline thereof 881;8', feet to the southeast corner of Tract 26, the north-south centerline-thereof 1092.82 feet; thence N68'03'51"E 224.45 feet; cure to the right-hewing a radius oh 230.00 (zee, through a central.angle of Renton Shore ledti Sated Su Iweetal Me Cs 1 • • 27h7 3t"•n arc distance o/'111,56 feet to. pint of compound DD r 95e;.thane• s72'37'S2'Y 382.60 reel to [pence N80'0\'48"f 232.00 feet; thence S41'06'OB"[ t7.16-feet to the TRUE POINT Of _ (. pound cur the - -- en tingle point In the south line of sald;Tfact 26; thence N70'51'02'Y 354,53 feet to • B EGIXNIIS; thence N42'06.ON%f 8)J6 feet; thence S8Oe 01.4t'Y 732.00 feet; thence f said beers MIS'46.31"E 160.00 feet; thence along said curve to the • an angle point In the south line of old jTr tic[ 26; thence 377'56'01'Y 130.08 feet to N12'01'00'Y 40.75 feet; thence 577'S9'00'Y 173.01 feet to• point of [hence right, through a 1 angle of 70'4e'19•an arc distance of 197.73 feet; thence - en angle point In the south Lim of seid�:r xct 26, thence Sh le l6'ol V alongthe Porto along • curve to the right having a• adios of 230.00 feet, through a central angle - • Se2'15'OOY 67•61 feet: thence 331'37'7:'Y 71.06 feet; thence M81.11' o feet; thence 582'1 ) thence 197.00 Ilse de said Tract 26 a distance of 316.01 feet to [CountynorthR boundary-of lb. • tract of of 2Ti7'31•'edare distance of 111.56�leer-co• ooint of compound curra[ure; the 5'00'v 92.99 feet; thence 535'29'30'V 11 18 feet; land d•dd to King County end duerlMd;u.d•r King Recording Number 6607786; center of said curve bears MI s'46'71"E 160.00'fee[; thence along said curve to Inn• 00Y 84.85 feet; thence 560'16'00•W 67.00 feet; thence 512'l6'00E 97.35 thence westerly along said north bounder[,on • curve to the left, the center which - - right, through• central angle of 70'48'19"en arc distance of 197.73 feet; thence feet; thence N68.06'\b"E 53.79 feet to• point which bears M72'04031•Y from the - bears O33e hl'jgv 627,16 feet, [hru • central • 1 5e2'15'00'Y 67.68 feet; thence S31'32.22•Y 71.06 feet; thence N81'11.35"W 193.00 - TRUE POINT OF BEGINNING; thence 577'01'34"f 3e9.97 feet to the TRUE POINT OF 1j\.)0 feet; thence north along ^B •of )9'41')9"; arc distance of feet; thence 582'15'00'V 92.99 feet; thence 535'29'30•V 143.18 feet; thence BEGINNING. said north boundary 25.00 feet; thencete ores[ •long 67.00said north boundary 245.69 feet to the TelE POINT OF BEGINNING; thence north 156.1) Nett t 0the Birth feet; [nonce 16.00'v described feet; thence SIIto Agree 97.73 feet: thence °50'79'19"[ 3)0.21 feat; thence M33'00'SI'Y 109.17 feet to the southerly ,feet to the north line of a tract of land dean ri bed in E2N IBIT 5 to Agreement went recorded under King County Recording Np. 8301050539; thence 16B'06'46'v along said PARCEL B-2 margin of the Burlington Northern Ilalirud Alq ht-o/-Way, said .point being • point on the center which beers $l left, 07'E Ie57.00 feet; thence westerly •long said northerly line 375.53 feet to the northerly line of • tract of land described in -• - southerly margin•d curve to [M Id t,-[hru • I angle of 7'59'19", w arc E2 NIBIT 8 In said Agreement; thence nor[heester lv along said northerly line on • - That-portion of the south half of Section 13, Tc+nship 23 North, Mange 4 Cast, V.N. distence of 129;00 feetr to• point of coe1c-,ud curve, the center of said curve burs curve to the left, the center which bears ref[ 195.01 feet, [Arco a centres angle • In King County, Washington and of Junction AddISIon to the City of Seattle, according 54j•27'IY'[ 40)0.00 feet; thence ee.tert ale of 78'II'7i", an arc distance of 767.t7 feet; thence N78711'2HY along said to'plat recorded In Volume 12 of Plats, page 75. records of said King County, and o/ - the.left. [hru a central • le of 2'48. 2'. an arc l disd tance southerly 197.57 feet curve a to northerlyline 180.00 feat to an • leC.C. Brorn•II•s Donation Claim No. 41 described as follow,: of tangency;-thence S4 43 9 point angle point In said northerly Ilm; thence along margin 271.00 feet to a point of N33'00.54'11 along-said northerly line 109.47 feet to the south Ilne of the 7th nc e, 9'09'Y soli south Snot .curve; thence on • curve to the right • ong said southerly margin, having • radius Burlington Northern Railroad Alyh[-o/-Way, said point being a point on• curve, Beginning at the south quarter corner of said Section 13; thence No0.58'28"[ along of 1571.00 feet, thru • central angle of'7'32.02". an arc distance of 206.57 feet to the center rnich bears 539'17'00"E 1853.00 I«[; thence easterly along said the north-south centerline thereof 1092.82 feet; thence N6e•03'54"E 224.45 feet to - • point of compound curve, the sh'I; bears N38.38'49'11 727.00 feet; thence southerly line and wrre to the right, [hru a central angle of 2'01.59". +n arc the TRUE POINT Of BEGINNING; thence 368'0)'S\'Y 575.56 feet; thence e72'0\'JI'Y westerly along an redsaid southerly ly margin and Larva to the right, tnru a rrrrr[ center of /1� distance of 65.75 feet to a point of compound curve; thence continuing along 3e9,92 feet; thence S68'06'16'Y 429.32 feet; thence south 85.47 feet to• point of -16'55'7 h", an arc distance of 214,)) /e•li,to • point of compound curve, the center CC said south linemen• curve-to the right the center of which Dean SST 71'01"f curve; thence one curve to the left, having • radius of 60.00 feet, thru • central which bears N2ieh,.i4'Y 1055.00 feet; tM¢ce westerly •long said southerly margin having • radlus.of-10543,00 feet. an arc distance of 1e 6:51 feet through • central - tingle of 126'52..10". en arc distance of 132.86 het; thence M53'07'50"E 199.18 feet - - and curve to the right. [hru • antral an{I• of 11.71.08", en arc distance of 209.95 �- angle of 01'00.49" to a point of compound curve; thence continuing along said south to•point of curve; thence on•curve to the right, having a radius of 200.00 feet feet to a point of cognomina np curve; the center which bears N10'19'06'Y 696.00 feet; Lim j ' lire on•curve to the right,-the center of which Deers.336'20'12"E having a radius tachru • central angle of 53.59'30", an arc distance of 188.47 feet,-thence 572'52'10"f thence westerly alongy said southerly° ry:n and curve to the right thru• central of of 1657.00 feet en arc eisnce of 19),9) fee[ [h rough,• central angle of 06'12.20'• 290.00 feet to• point of curve; thence on • curve to the left, having • radius of • _ 3'41'25', en arc distance of 45,43 feet tc tie utterly margin of the Charles Monster - to a point of compoundthence continuing along said twin line on • curve to - 197.00 feet, thry • I angle of 39'08.51", en arc distance of 134.60 feet; thence Count? Aced; thence 531'le'31"[ •I ong said easterly margin I).46 feet to the north ' ;he right, the center of which Dears 529'31'$7"E having a radius of 6738.00 leer, °67'58'2g1 380.92 feat; thence NJI'27'II"[ 704,96 fee[ to the TRUE POINT Of BEGINNING. boundary of said tract deeded to King County and described coder king County Record- an arc distance of 197.76 feet through• central angle of,01'10'51" to a point of compound curve; thence continuing ale said south tine on • curve to theright. inq Nunber 6a long ; thence h boundary along said north boundary 443.31 feet; thence Z 9 ^9 N59's)'\7"E story said north 317.52 feet; thence east •long said north -� Q the center of which bears S7T sb 5c en oaring . ref u6 of 1769.00 feet. an arc -PARCEL 8-3 boundary )s.DO feet to the TW[ POINT OF BEGINNING. - d;stance of 194,45 feet through a central angle of 06'18•.06" to,a point of compound �. thence continuing along said south line on • curve to the nigh[, the center mmml z of which Dears 521.38'52"E having • radius o! 8603.00 feet, an arc eistance of That portion of the tooth half of Section Ij, Township 23 North, R•nye 4 [aft, W.N. PARCEL C :04.51 feet tnr ougn+central angle of 01'21.41•' to a point o/ compound curve; 'in King County, Washington; and of Junction Addition to-the City of Seattle, according - [hence continuing along said south line on• curve to the right, the center of to the plat recorded In Volume 12 of flats, pair 75, records of said Klny County, Tn•t I 0 Z N rnicA Dun 520'17'OB"C hewing , radius of 1972.10 feet. an arc distance or 1)8.79 together with vacated adjoining which would attach to sold premises by opera- o/ , on of inset 2S, Renton ihvreland= Second Supplemental and that Q feet through+ central angle o/ OS'19'46" to a lion o/ tar; one o/ C.E. Brorrsa ll'B Don•tlon•thin No. 11, and of Tracts 75 and 76, _ of et a southeast 9uirtrr o/ Section 13, To-Goshlp 2) Ngrth, gauge 1 East, Nat., n O ej 9 point of empound curve on the cost Rent m_Sherr lands id Supplemental Maps DO•tlpn o/ tAr soutlr.est i Ilne of said Charles Brownell Donation land Claim No. 41;compound continuing along DP Df I958', -'. IDed •f follows: • - 1 [aft, V,N all In Rin Count WSAi If Section le, Township 7) North, K•nq•- - - said south line on • curve to the right, the center of which burs 314'S7.22"E • 9 Y, ngt;f described of tellers:having a radius of 1811.9J lee[, an arc distance'of 659.42 feet through • centre Beginning at the south quarter corner of sold S¢ct ion 13; thence N00'58'28'o alongthe , ng ' ) angle o! I)'2s'19" to a point of compound curve; thence continuing along said north south line [hereof 109I.82 feet; thence N68'o)•51••L 7I4.15 lest [o• point tn•'north-southat ecenterlineth q rthereof 10 2/e2xld Section 1 "9 Q J hereinafter [and "Point A". thence 368'03'S1"'- n ]: thence NO0.5B'7e"[ elo /�[ south line on • curve to the rigor, the ce nt rr o/wni cn Di+rt S01'32'0)"f having .575.56 feet; thence N71'0\'vev B N9 , ••t; thence N68'03.51"[ 271,15 lee t; F, V radius of 1165-09 lee[, tnru • central angle of 77'39'19 an arc distance o/ 389.92 feet; thence 568'06'46"W 429.32 feet to:the'TRUE POINT Of BEGINNING; thence thence Ne0'04.1e"C 7)7.00 feat; then[• S47'06.08^( 8 16 rut to ton TRUE POINT Or _ al CC south 85.47 feet to• inhaving - $hj 10.TI tAence 547'06'oe'•[ 171.81 tut;%hence S31•li'OS'L 758.99 feet: tMnu �, in, Q 765.71 feet to a point which Dears N41'28.10"E from the TRUE POINT OF BEGINNING; point of curve; thence on• cure• to the left. hart • radius • thence 536'19'75'Y 188.67 feet [o a point on • curve, the center rnich.Dee rs - of 60.00 feet, [hru • central angle of 126'52.1O". an arc distance o/ 132.86 feet; 71,)1 I°tie; thence Best 114.77 ;Bet; then[• south 6e.91 fret to I'nr W TT- 136'19')5'V 967.16 lee[; thence northwesterly along said curve to [M tell, rnru [hence N• wadi'50"1 199-Ie feet to a point of urge-, thence on a curve to ton'rlce1, -north line of [h°esou[nt625; [Mnc• See'15'};0"I •lorry sold south Ili• and the M-�N i Merl • radius of 200.00 feet chru • central angle.of 57'S9'70", an are distance of $0.00 het o/'[M'l ou thus[ ewrter o/ cold Section I), _ BNB.. a tentr•1 angle of 1'79')2", •n arc distance of 78.67 het; thence 378'S1.22'v "7 _ distance of 70e0. )'36'2)'v 170.00 leer, - teem\? scot; [hams 37I'S2'40"[ 290.00 feet to i-po lot of curve; thence"on• curve to 9 76 Put to the east line oi} said Section IJ; thence 5e9'10'25"I • I"' N . 451,74 feet to• point on a curve, the center which-Dears S4 the /eft halving • radius o/-1 atop ton north Ilsse of ton south 6 0.00 h�f o/ eon southwest wrier::6.5168 sa[hence four Iy •tong said curve to the right, [hru a central angle of r9 97•oD Put, [hru •central anyh°( )9'OB'S1", in arc Seatlon ten • distance of 81, 5 9W)'08'J7", +n tine assonce of 9.37 leet;'cnence 14 15'00"E 20.74 leer; cnence • dlstane•o/ 134,60 feet;,thence N67.58'2 •E 380.92 Peet; thence M)1'27'12"[ 204,86 - ®uJ � )• lean to aformentloved"►olnt A"; thence N80'0\'ie"[ 232.00 tut; tAence Sii'06'OB"[ Kaliruad AI At-of-W $7 feet to tAa 4outA Ilne o/ ton BurlingtoNorthern 9 r: cnence N71.29'o)'v a?ony sold tooth Ili• eS.52 ► t to the52)'21•j7'Y 41.74 leer to the iKUC POINTOf BEGIMNING: 715.DQ'/eat; [Mnc• S71.14'OS'Y Sher99 /eat; thrnc• Si)•10'01"E 71.)1leat; thence - Best Ilne of sold SectionIj; thane• N71.7 I...- east 11►,27-het; thane• south 68,91 Put to ton southerly line o/ old Trect 25; leer to• polo[ o/ tornu on • 9i'tot alrig old south It« CC N _ the which pears Nl e•JO'h7'K 1005.37t° the right along said south line, . - IeV an [hence along ilia southerly line of used Tracts 25 and 26, the /ollorlrg%coo rfn ad.-_ an arc distance of 7••t, [hru•eta trai erg l•of ))•54,00,.• /� Z - dlst•ncot -NB8•15.00•Y-loom 65 feet; N73.07'25'Y.151.51 het; N27'21•32"C 387.32. - - -fee 591.84 feet; ton 6 N)7•.5'OTY along said mouth line')08.70 - Y Lie feat; N8317'25'Y 171.17 hoe; S46'22.22''A 324,6%:./Bet; 372'37'5I'Y\h8;9) feet; - t to-al point o► curer, thence on • wrre'to the left, along said south line; 1170'5h'0Yv 354.53 feet; S73'56.01•Y 130.08 feet; and 541'16'07•Y 316.18 feet-to the _ - - en which burs 352 feet t v 116h-07 fret, [hru•central • le of 16 17'41", .CC cc 0 ;' north boundary of a trrct of land deeded to Ring.County •d described under kingarc Fl Btahce o/ 77 t.)$ hat to •pohl stitch Dears M►i'28'10'Ent from the TRUE WLU County Recely leg Member 6607786; thence wester));al • - POINT OF BIGI NNING; thence S 6•i T ong said north boundary on• curve rAft Dean 5 6'1 3 9.35'Y lee.6> feet to•point an • , ton to • the left, ton center which bears S79'11')gv:67),46,feet [hru ■ central • Ir of 3 9')S'Y 967.I6 /eat; iMnU northwesterly along _75'1t')g', an are distance of 434.70 feet; thencn:•north al said north boo d• - to the 30e, [hru a 51.74 f an •le of 1• earc sold curve O 0et .1 thence 3)e'h1'72!Y IS1,)1 feet to•• Inc'on2:a curve,"the center/rl+ech7Mars� • WM 25.00 feet; thence west along sold north bouder,l45 69 feet; thence north 156.13 SI3•J6'2J'Y 170,00 het; IMnc• °out M•B terry •long old cure, to the right, thmu �, s 4 Ca Q I- f.V feet; thence N5o'39'I9'E 330.21 feet; thence 57800'24"[ 180.00 Nat to a Inn of R V.$ [Mote on a arve to the right, hartpO • untrel •rig le of 3.08'37". en arc dIstanu•of 9.3) het; thence S4)'1S'00"E y�;%��`\ g having •'radius of 195.01 feet, [hru •central 20.74 feet; thence 527'21'ary 44,74 feet t, _ angle of 78.41'7 W, en ere distance of 267.e7 /estto the TRUE POINT Of BEGINNING. tot h• TRUE POINT Or B[C INNI K. 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': r , 1 1• `"'r'Pr4 r , �••• •li.••-.hi•1 +'. .1;< •'• 'i3'1 C aj '9 '�,k'... +,i'. .,.,J� \�{J,..•n,�i-i lYi iE•:.�t. .,•,,T+!'e i�F:t..ih!ns' i4., •'...-.:,. . ..... :r,tti.,''a4:',iL•.J�d;'L& `:rr/�Ll`fL..r r..;.r.Lr.1a l':. �T,k'P Yw i r.: r:" r,..:.i.•i,v::. n - _ ' . . . . .. • Table 2, below, provides a summation of the estimated 25-year stormwater . runoff that discharges to the Black River channel from the proposed develop- ment site. The Rational Method of Runoff estimation was used to construct Table 2 . • • TABLE 2 • ESTIMATION OF STORMWATER RUNOFF, FROM BLACK RIVER OFFICE PARK .SIT.E 25-Year Storm Runoff Drainage PREDEVELOPMENT POSTDEVELOPMENT(1 ) Description Area Max.Rate(2) Volume Max.Rate' / Volume (Acres) (CFS) (AC-FT) (CFS) (AC-FT) 1 . Black River Office Park 71 .1 . 28.4(3) ' 13.7(3) 55,.0 26.5 • 2. West Culvert 31 .5 7 1 .3 7 2.0 3. Center Culvert 15 4 0.8 4 1 .2 4. East Culvert (4) 51 .0 18.2 11 .0 44.2 13.2 (1 ) Post development assumes 80% of site will be filled and improved with buildings, roads, or parking areas and the remaining 20% will be left natural or developed for flood storage. (2) Maximum runoff rates are not additive due to differences in time of concentra- tion. Runoff volumes are additive. (3) Assumes an Rational Method Runoff coefficient of 0.4 for runoff rate and an SCS curve number of 83 for runoff volume estimate; however, runoff rate and volume values could be higher as discussed in text. (4) Consists of West Hills drainage area north of Empire Way (32 Ac.) and Earlington Woods P.U.D. 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Box 86101 ';>\Y 0 3 1984 Seattle, Washington 98166 Attention: Mr. Del Bonds itiD!.`kiir) Subject: Preliminary Geotechnical Engineering Study Black River Office Park Powell Avenue Southwest Renton, Washington Gentlemen: At your request and within the scope of our proposal dated March 22, 1983 this report presents the results of our Preliminary Geotechnical Engineering Study for the subject project. The purpose of this study was to explore the subsurface soil conditions and to provide preliminary recommendations for preliminary foundation design and the site preparation for the site development process . Further engineering studies will be required when plans have been finalized and building locations and grades are established. The scope of our study included test pits , borings, laboratory tests , geotechnical engineering analyses and the preparation of this report. Our study indicates that the site is immediately underlain by fine grained compressible soils. The depth of these soils varied across the site, but in general, they ranged from about five ( 5) to thirteen ( 13) feet in depth. Beneath the compressible soils was loose to medium dense silts and sands over dense silts and sands with varying amounts of gravel . The static water level measured at the boring locations was approximately two feet below the existing grade in most areas where there was not standing water. Based on our exploration, development of the site as an office/- warehouse complex is feasible. From a geotechnical view, the primary design consideration is the existing fine grained compressible soils. These soils are not suitable for foundation support and will make site preparation difficult, especially during periods of rainy weather. We anticipate significant settlement under fill and build- ing loads. For planning purposes, it may be assumed that office structures and/or lightly loaded office/warehouse structures may be 1805- 136th Place N.E., Suite 101, Bellevue, Washington 98005 Phone: (206) 643-3780/Seattle (206) 464-1584 • Alterra Corporation E-1990 May 10, 1983 Page 2 supported on pile or augercast pier foundations or conventional spread footings bearing on a structural fill mat. For a pile or pier supported foundation, the piles or piers should be extended through the compressible surface soils into the underlying dense silts and sands. Since significant settlement may occur as a result of fill and building loads, a conventional spread footing supported building would require that the building area be preloaded with a surcharge load to compress the soils prior to construction. We suggest that the site be drained using interceptor trenches as soon as possible to drain much of the standing water off the site. Roads should be constructed as soon as possible to allow for settlement prior to paving and placement of utilities. PROJECT DESCRIPTION At the time our study was performed, the site was as shown schematically on the Boring and Test Pit Location Plan, Plate 1. ' This is based on a site survey plan by Triad Associates dated April 1, 1983. The project was in the preliminary design stage at the time of our study. It was our understanding that the study area is to be developed as a light industrial park comprised of office/warehouse structures. Fills on the order of five to ten feet are planned for much of the site to raise the site to a proposed building grade of about Elev. 18 to 20. A large detention pond is to be developed in the western portion of the site . Development plans call for the excavated material to be placed in the study area or disposed of by the developers . If any of the above design criteria change, we should be con- sulted to review the recommendations contained in this report. In any case, it is recommended that Earth Consultants, Inc. be provided the opportunity for a general review of final design. FIELD EXPLORATION AND LABORATORY TESTING Our field exploration was performed from April 1 through April 12, 1983. Subsurface conditions at the site were explored by drilling six borings to a maximum depth of forty-nine (49 ) feet below existing grades and excavating twenty-six (26 ) test pits . The borings were drilled using a truck-mounted drill rig. Continuous flight, hollow stem augers were used to advance and support the boreholes during sampling. The test pits were excavated using a rubber tired backhoe. The locations of the borings and test pits were determined by approximating site features. Elevations of borings are approximately determined by interpolation between plan contours. Therefore, the locations and elevations of the borings and test pits should be considered approximate only. These locations are shown on the Boring and Test Pit Location Plan, Plate 1. Earth Consultants, Inc. Alterra Corporation E-1990 May 10, 1983 Page 3 The field exploration was continuously monitored by a staff engineer from our firm who classified the soils encountered, main- tained a log of each boring and test pit, obtained representative samples, measured groundwater levels, and observed pertinent site fea- tures. Observation wells were installed in all of the borings except Boring B-2 so that groundwater levels could be monitored. All samples were visually classified in accordance with the Unified Soil Classification System which is presented on Plate 2, Legend. Logs of the borings and test pits are presented on Plates 3 through 23. The final logs represent our interpretation of the field logs and the results of the laboratory examination and tests of field samples . In each boring, Standard Penetration Tests (SPT) were performed at selected intervals in accordance with ASTM Test Designation D-1586. In addition, a 2. 4 inch I. D. ring sampler and 2. 5 inch shelby tube was used to obtain less disturbed soil samples at selected depths. Shear strengths of the soils were measured where practical in the field with a penetrometer. These results are recorded on the boring logs at the appropriate sample depth . Representative soil samples were placed in closed containers and returned to our laboratory for further examination and testing. Visual classifications were supplemented by index tests such as sieve analyses and Atterberg Limits on representative samples . Field unit weight and moisture determinations were performed on undisturbed samples, and moisture contents on all disturbed samples . Results of density and moisture determinations, together with classifications, are shown on the boring logs included in this report . The results of the sieve and hydrometer analyses are illustrated on Plates 24 and 25. SITE CONDITIONS Surface The site is located in Renton, Washington. Irregular in shape, it covers approximately 71 acres . The site is bordered by the Burlington-Northern right-of-way to the north and the Earlington Park development to the south. There is a cover of brush and grass, and a variety of soft wood trees on the site . The Black River flows west along the western portion of the southern property boundary. Approximately ten (10) to sixteen ( 16 ) feet of fills have been placed along the northern margin parallel to the railroad tracks. About four feet of fill has been placed in the western portion in the proposed retention pond area. In addition, some fills appear to have been placed along the southern margin parallel to the Black River . . These fills may be spoils from dredging the river. The approximate location of the fills are shown on Plate 1 . Earth Consultants, Inc. Alterra Corporation E-1990 May 10, 1983 Page 4 At the time of our field exploration, the central area of the site was ponded with standing water. Much of the water was one to three feet deep, however, in some areas the depths were greater than four feet. Surface water was observed flowing onto the site from two twelve (12) inch drains under the railroad along the northern margin. Subsurface The site is immediately underlain by approximately five (5)* to thirteen ( 13) feet of soft to stiff clayey silt. Beneath the clayey silt is loose to medium dense silts to silty sands over dense sands with varying amounts of silts and gravel. The depth at which the dense sands were encountered was about twelve (12) to twenty ( 20 ) feet below the general site grade (Elev. 0 to -8) . Borings B-1 through B-3 were located over the northern site margin fills and encountered six (6) to twelve ( 12) feet of fill consisting of clayey silt to silty sand with gravel and varying amounts of debris including wood and concrete. Boring B-6, placed in the proposed retention pond area encountered approximately six feet of sandy silt fill. Test pits in this area encountered three to six feet of fill varying from sandy silt to gravelly silty sand and silty clay. A lens of medium stiff fibrous peat approximately two feet thick was encountered at a depth of four feet in Test Pit TP-3. This was a generalized description of subsurface conditions, more specific descriptions are presented on the boring logs. Observation wells were placed in each boring except Boring B-2. Groundwater was measured in each observation well and is presented on the boring logs. DISCUSSION AND RECOMMENDATIONS The following sections of this report present detailed recom- mendations for various geotechnical engineering aspects of the project which should be incorporated into the project design and construction. This report has been prepared for specific application to this project in accordance with generally accepted geotechnical engineering practices for the exclusive use of the Alterra Corporation and their representatives. No other warranty, expressed or implied, is made. Foundations • For planning purposes, it can be assumed that the proposed office and office/warehouse structures may be 'supported on pile or pier foundations or on conventional footing foundations bearing on a structural fill mat. The building loads may be supported on piles or augercast piers extending through the compressible site soils and _ bearing in the underlying dense sands. Based on the subsurface Earth Consultants, Inc. Alterra Corporation E-1990 May 10, 1983 Page 5 information obtained for this study it is anticipated that the required depth of penetration will vary across the site ranging from approximately twenty-five (25) feet near Boring B-4 to forty ( 40 ) feet or greater near Boring B-5. Possible pile capacities are on the order of thirty ( 30) to forty ( 40) tons. It should be noted that the depths of penetration and possible pile capacities are for preliminary planning only and that specific pile design criteria could be provided after. development of final building plans and additional subsurface exploration and analysis.. Alternately, the proposed structures may also be supported on conventional spread footings bearing on a structural fill mat. The structural fill mat should extend at least two feet below footing grade and at least two feet laterally from perimeter and interior footings. Footings that will encounter original ground should be overexcavated to provide for the minimum depth and lateral extent of the structural fill below the footings. We expect significant settlement under the anticipated fill and building loads, and therefore, recommend that the building pad be preloaded with a surcharge load. Near the railroad, the existing fills may have preloaded this area, depending on final building grades. Site Preparation Much of the site is covered with standing water which has saturated the fine grained surface soils. In their present condition, site grading will be difficult. Therefore, we recommend that the site be drained as soon as possible by use of drainage trenches . This will allow drying and surface dessication of the fine grained soils, improving their strength and workability. We recommend that, if at all possible, the grading, drainage work and initial fill be placed in the drier summer months. All building and pavement areas should be cleared of large vegetation and other deleterious matter. Care should be taken to minimize disturbance to the ground surface . We suggest that the brush be cleared with a hydro-axe to minimize ground disturbance. A filter fabric placed directly on the excavated surface would help to bridge unstable areas and reduce the quantity of fill required. Placement of a filter fabric below the main roadways is recommended. Structural fill should be placed in horizontal lifts not exceeding eight inches in uncompacted thickness with the exception of the first lift. The first lift should ' be eighteen (18) inches in thickness to provide a working surface . The fill should be compacted to a minimum 95 percent of the maximum dry density in accordance with ASTM Test Designation D-1557-70 (Modified Proctor) . The site soils contain an excessive amount of fines that will make them difficult to compact or work when wet. An approved granular imported fill may be Earth Consultants, Inc. Alterra Corporation E-1990 May 10, 1983 Page 6 required if grading operations are performed during wet weather. Ideally, imported fill should consist of a granular material with no more than 5 percent fines, passing the No. 200 sieve. A major excavation for installation of a soil conservation service detention pond is proposed in the western margin of the site. Based on our field exploration, we anticipate that the excavated soils could be used as on-site fill. However, the material is wet and could be difficult to place. These materials can be placed in areas where no buildings or roadways are to be constructed or in building and roadway areas that are to be surcharged, or where the buildings are to be supported on pile foundations . We recommend that if on-site materials are to be used as fill, that it be spaced out over the site so that the thickness in any given area that is to support roads, buildings or utilities, is kept to a minimum. For ease of placement, it may be desirable to place a working pad of off-site granular material on the ground surface prior to placement of on-site materials. The fill placement and compaction should be observed and tested by a representative of Earth Consultants, Inc. Surface Water Control The subject site contains fine grained soils that will make grading operations difficult during wet weather. It is important that surface water be controlled. Surface interceptor ditches should be placed along the site perimeter where water may infiltrate. The site should be graded to drain at all times and all loose surfaces sealed at night to prevent the infiltration of rain into the soils. After rainfall, equipment should remain off the soils until they have had a chance to dry sufficiently. Settlements Total settlements are dependent on the final fill and building loads. We anticipate settlements on the order of five inches for about five feet of fill. Actual settlements will vary across the site depending on the thickness of the fills required to develop building grades and the depth and compressibility of the fine grained soils. We recommend placement of at least twenty ( 20) settlement markers throughout the site to monitor the progress of the settlement. In addition, this will provide information on the settlement characteristics of the site soils. We anticipate that it will take approximately three months for the settlement to stabilize. Earth Consultants, Inc. Alterra Corporation E-1990 May 10, 1983 Page 7 Additional Services It is recommended that Earth Consultants, Inc. be provided the opportunity for a general review of the final design and specifica- tions in order that earthwork and foundation recommendations may be properly interpreted and implemented in the design and construction. The analyses and recommendations submitted in this report are based upon the data obtained from the test pits and borings . The nature and extent of variations between test pits and. borings may not become evident until construction. If variations then appear evident, Earth Consultants, Inc. should be allowed to reevaluate the recommendations of this report prior to proceeding with the construction. It is also recommended that Earth Consultants, Inc . be retained to provide geotechnical services during construction. This is to observe compliance with the design concepts, specifications or rec- ommendations and to allow design changes in the event subsurface conditions differ from those anticipated prior to the start of con- struction. The following plates are included and complete this report: Plate 1 Boring and Test Pit Location Plan Plate 2 Legend Plates 3 through 23 Boring and Test Pit Logs Plates 24 and 25 Grain Size Analyses We trust the information presented herein is adequate for your requirements . If you need additional information or clarification, please call. (cS R• F/N/ % Respectfully submitted, •1t- pF W ti • �r�� , '• �yc .� • EARTH CONSULTANTS, INC. • o. • M -a ; •• • �• i. %i •e; }�?�a r � �� ,tic j c so of S. �` •/s-r •v.-'r��4 James R. Finley, Jr. , P. E. •sst,�'�OVAL 061\�o Chief Engineer JRD/JRF/jg Earth Consultants, Inc. GRAPH LETTER TYPICAL DESCRIPTIONS MAJOR DIVISIONS SYMBOL SYMBOL �•G. °°• WELL-SRAM GRAVELS, GRAVEL-SAND o..b. .o •O o•O• ••a GW MIXTURES, LITTLE OR NO FINES 8R CLEAN GRAVELS O 0',;0 a 0 AMO (MIN or N. floss( • 'G GRAVELLY ''•�''� S..G. S..• G P POORLY-GRADED GRAVELS, GRAVEL- SOILS • •'G'.W' SAND MIXTURES, LITTLE OR NO FINES COARSE -1- GRAINED ~11 SOILS IS SILTY GRAVELS, GRAVEL-SAND- WOIIE THAN SOIL 1 i r` X GM W SILT MIXTURES OF COARSE FRAC- GRAVELS WITH FINES GI I TIOM RETAINED (swoosh* "Fain!! if i./ ON N0.• SIEVE hoes) /J'`_/JJ �' CLAYEY GRAVELS, -SAND- S GC CLAY MIXTURES �C Sa..�• O 0 00 - o WELL-GRADED SANDS, GRAVELLY m o 0 0 a om : mo a SW !ANDS, LITTLE OR NO FINES SAND 11CLEAN SAND•ND o:°o o m o , 00 (1,10 of so files) 5... !MDY m SOILS POORLY-GRADED SANDS, GRAVELLY MORE THAN 50% • SP SANDS, LITTLE OR NO FINES OF MATERIAL IS •.▪▪•..... LARGER THAN MO , 200 SIEVE SIZE rr ▪ SM SILTY SANDS, SAND-SILT MIXTURES MORE THAN 50% SANDS MTH FINES I OF COARSE FRAC- (s•p leg se,•SN s.!of •i'• `)•A TION PASSING floss) r .ri NO. • SIEVE• SC CLAYEY !ANDS, SAND-CLAY MIXTURES a': MORGANIC SILTS AND VERY FINE SANDS, ROCS •LOUR, SILTY OR ML CLAYEY FINE SANDS OR SILTS WITH ILiMIT PLASTICITY " INORGANIC CLAYS OF LOW TO MEDIUM FINE SILTS //! OL PLASTICITY,, SILTY GRAVELLY S, , LIQUID LIMIT SANOT CLAYS, SILTY CLAYS, LEAN GRAINED L•AN LESS THAN SO CLAYS SOILS SLATS ORGANIC SILTS AND ORGANIC OL SILTY CLAYS Of LOW PLASTICITY INORGANIC SILTS, MICACEOUS OR MH DIATOMACEOUS FINE SAND OR SILTY SOILS MORE TNAN 309E SILTS OF MATERIAL IS LIQUID LIMIT CH MORSANIC CLAYS Of HIGH • SMALLER TNAN NO AND GREATER THAN SO PLASTICITY, FAT CLAYS CLAYS 200 SIEVE 712E / / ORGANIC CLAYS DR MEDIUM TO HIGH OH PLASTICITY, ORGANIC SILTS � .. ± i PEAT, NI_•Aq, •s'�I SOILS HIGHLY DRCINIC SOILS �-_ PT WITN HIGH ORGANIC CONTENTS TOPSOIL - Humus and Duff Layer ••�•'•••••� Uncontrolled with • FILL :‘,40.:•: Highly Variable Constituents •• • • NOTE: DUAL STMIOLI ARE USED TO INDICATE IDRDERLIRE SOIL CLASSIFICATIONS SOIL CLASSIFICATION CHART THE DISCUSSION 'N THE TEXT OF THIS REPORT IS NECESSARY FOR A PROPER UNOERITANOING Of THE NATURE Of THE MATERIAL PRESENTED 'N THE ATTACHED LOGS j 2"0.D.Split Spoon Sampler Ij Ring or Shelby Sample • P Sampler Pushed Earth .101 * Sample Not Recovered Consultants Inc. 47 Water Level (date) , LEGEND Ts Torvane Reading qu Penetrometer Readings " i Water Observation Well Proj.No. 1990 Date Apr. IR3 I Plate 2 BORING NO. Logged By JRD 23+ Date 4/6/83 ELEV. lN1 Graph cS Soil Description Dent Sample Blows ( Ft. %) •4�. •ir • - 12 O4+, % ice ML Dark brown clayey SILT with large pieces - ������e S •iO� of concrete and some wood, medium stiff, � •� 4• moist (FILL) Z44 3 (See note below) —10 O. ••-: - 29 I111IMH Mottled tan clayey SILT, stiff, damp - V 10 41 =1.5 tsf I —15— • ML LL=52 iili - �,,�:;:; ' PI=18 .+ 7. • - IE P 35 g u=1.25tsf 11,. —20 i I ML Brown SILT to silty SAND, radin - �!. i sandy grading :I: 5 46 i,, 1';;: SM to SILT, loose grading to dense at - _25 .'� i L: about 25' - ?: : : = 32 53 iiil• t:. "30 ii;[:; :' : tij; ;; SM Gray gravelly SAND with silt to SAND - 41 7 ]:` `• SP with silt, dense, wet - • —3 5 T 30 14 • Boring terminated at 39' . Water observation well installed to 39' . ' NOTE: Boring was drilled through backfilled test pit excavation after ' removal of large pieces of concrete. BORING LOG • (111) e'� I / BLACK RIVER OFFICE PARK • Earth RENTON, WASHINGTON Consultants Inc. ' ��.: GEOTEGHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 I Date Apr. '83 Iate 3 BORING NO. Logged By JRD + Date 4/6/83 ELEV. 19- (N) Graph CS Soil Description �ft)h Sample Blows (W Ft. ) <' ; ML Dark brown SILT with sand and gravel, - 3 23 very soft, damp (FILL) .S CL I 9 40 q =1.5tsf 4MH Brown clayey SILT, stiff, damp �10 u Ill ML (grading to medium dense below 7') 6 35 iNiiiiM SM Brown silty SAND to SAND with silt, 5 • SP loose, ..ct 16 20 20 (grading to sandy SILT below 12') 11 22 -,2 5 SM Brown silty SAND to SAND with silt, very - = 55 16 ,':.5..n'' SP dense, wet 30 50/5" 21 5 - . f 50/4" 19 Boring terminated at 38' below existing grade. • BORING LOG r III, BLACK RIVER OFFICE PARK Earth I RENTON, WASHINGTON Consultants Inc. . •• GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 I Date Apr. '83 ,Plate 4 BORING NO. Logged By JRD Date 4/6/83 ELEV. 18- S Graph Cs Soil Description Depth Sample Blows w6� Ft. 19 SM Dark brown silty SAND with gravel, = 4 18 loose, damp (FILL) _ 5 Y -4/19/33 ' ML Brown sandy SILT to SILT, very loose, - : - SM dam 3 37 = :� t31 P • —10 30 28 SM Brown SAND with silt grading to sandy - 19 6 SP GRAVEL with silt and gravelly SAND, —20 • 6-!.\. GP medium dense, wet • : •: _L .•. GM 23 14 • . . .• • � • • • i —25 •4. 4 (grading to silty SAND below 17') - • •' • = 11 31 • , • . • •. • —30 •: • . • • •! = 102/6" 18 • =• SS Greenish brown weathered SILTSTONE, hard—37 (BEDROCK) - - -- 100/4" 27 Boring terminated at 38' . Water observation well installed to 38' . • • BORING LOG • BLACK RIVER OFFICE PARK Earth I RENTON, WASHINGTON Consultants Inc. • GEOTECHNICAL ENGINEERING & GEOLOGY Pro). No. 19990 . ' Date Apr. '83 (Plate 5 BORING NO. Logged By JRD Date 4/11/83 ELEV. 13- US (N) Graph cs Soil Description D(ef Sample Blows (%) Ft. . i�Ijl�; - 2 3 43 ML Brown SILT with clayvery .4/soft 19 3 Hi to SILT,p l = 3 67 =0.5 to • ;;; MH to stiff, damp _ 5 - 1.25 tsf 52 +:1:c;:':;:1 E 4 17 10 12 19 Mnt - %;•:-1{ SM Gray SAND with silt to gravelly SAND 15 ::;:?:j: SP with silt, medium dense to dense, wet . _ = 30 12 - 201...... T 31 7 Boring terminated at 24' . Water observation well installed to 24' . • • BORING LOG , BLACK RIVER OFFICE PARK • Earth I i RENTON, WASHINGTON Consultants Inc. • GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 J Date Apr. '83 'Plate6 BORING NO. 5 Logged By JRD Date 4/11/83 • ELEV. 13- (N) Graph CS Soil Description Deftth Sample Blows (9W6) Ft. 111101 . MH Brown clayey SILT, very soft grading to _ V 2 qu>•25 tsf ML stiff at 3' , damp - 19 3 =.75- : . :1 - 5 3 1.25tsf r -10 P :1: SM Brown to gray silty SAND to SAND with . - 18 SP silt, medium dense, wet - • ^15 ` = 24 —20 :i. • - _ :I: 3 LL=45,PI=14 ML Gray medium stiff clayey SILT to SILT —25 with clay and trace of fine sand, pieces - ! of shell, very loose, wet II: 3 —30 l - ML Gray lenses of sandy SILT, SAND with Z 5 —35 SM silt, and silty SAND, loose, wet _ _ I6 -'• .. . 40 c - SP Gray silty SAND to SAND with silt, dense _ = 33 SM wet —45 30 . . Boring terminated at 49' . . Water observation well installed to 49' . BORING LOG {II BLACK RIVER OFFICE PARK Earth ry I RENTON, WASHINGTON Consultants Inc. . -� GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 I Date Apr. '83 (Plate 7 • BORING NO. Logged By JRD + Date 4/12/83 ELEV. 17' Graph CS oil S Description Depth Sample Blows W (ft.) Ft. (%) 30 ML Brown sandy SILT, dense to medium dense, damp (FILL) = 23 —5 ii - 2 ji ML Mottled brown clayey SILT, stiff, damp 4/1973: = 6 MH -10 15 SP Gray SAND with gravel grading to —15 GP gravelly SAND and sandy GRAVEL, medium - �"��'': dense grading dense, wet w • r• 4; - 26 qu=1.25tsf • 1, ' tf ' lr —20 O . r . . Te . .r . .r 39 Boring terminated at 24' . Water observation well installed to 24' . • • • BORING LOG • BLACK RIVER OFFICE PARK • Earth RENTON, WASHINGTON Consultants Inc. • GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 I Date Apr. '83 'Plate, 8 TEST PIT NO. -1- Logged By JRD Date 4/1/83 Elev. 14- Depth W (ft.) USCS Soil Description (%) 0 -4 38 q =0.25 MH Mottled brown clayey SILT, soft to medium stiff, u tsf ML damp to wet 5 —1i • i �,j: 11111 (grading blue gray below 5' ) 38 =0.5- 11! iljH 1.0 tsf t,!•! 10 — Test Pit terminated at 9' due to caving. Heavy groundwater seepage below about 2' . • . 15 Logged /1/83 TEST PIT N O Date . Elev. 14± Date 0 LL=51 PI=38 47 qu=0.5- MH Mottled brown to blue gray clayey SILT, soft to 1.0 tsf ML stiff, damp to wet q =1.75 5 u -- �j , tsf iiri 14 SM Blue ray silty gravelly SAND to silty SAND with gravel, medium dense, wet 10 — Test Pit terminated at 9' due to caving. Heavy groundwater seepage below about 3' . 15 • • TEST PIT LOGS BLACK RIVER OFFICE PARK Earth #44 RENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY' Proj. No. 1990 b0ate Apr. '83 'Plate 9 TEST PIT NO. Logged By JRD Date 4/1/83 + Elev. 13- Depth W (ft.) USCS Soil Description (96) 0 • 67 qu=.25- MH Mottled brown clayey SILT, very soft to medium .5 tsf stiff, damp gif .5tsf 5 --•:.1: ` Pt Brown fibrous PEAT, medium stiff, wet 223 -$:;: ;{ SM Gray silty SAND with gravel, medium dense, wet 42 Test Pit terminated at 8' due to caving. 10 -- Heavy groundwater seepage below about 3° . • 15 Logged By JRD 4/1/83 TEST PIT NO.Date �- Elev. , 3- 0 f .,i• ;.I ML Mottled blue clayey SILT, soft to medium stiff, 1.0 tsf 11 MH damp 5 — SM �' ''•" SP Gray SAND with silt, medium dense, wet 39 Test Pit terminated at 8' due to caving. 10 — Heavy groundwater seepage below 3' . • • 15 TEST PIT LOGS BLACK RIVER OFFICE PARK• - Earth RENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 1 Date Apr• '83 !Plate 10 TEST PIT NO. — 5 • Logged By JRD Date 4/1/83 Elev. 14- Depth W (ft.) USCS Soil Description (%) 0 60 qu=.5- - MH Mottled brown clayey SILT, soft to medium stiff, Ii I ML damp 1.0 tsf 5 —ij 36 qu=0.75 HU I tsf iv Test Pit terminated at 8' due to caving. 10 -- Moderate to heavy groundwater seepage below 3' . 15 Logged By JRD + Date 4/1/83 TEST PIT NO. �_ E lev.0 __- MH Brown clayey SILT, soft, damp q =.5tsf . 43 u SM Brown silty SAND, loose, damp 50- � CL Brown siltyCLAY to clayey SILT, soft to very . 5 _ y y ML stiff, wet 56 1.0 tsf SM Blue gray silty SAND, medium dense, wet , t : 22 Test Pit terminated at 8.5' due to caving. 10 -- Heavy groundwater seepage below about 3' . • 15 TEST PIT LOGS BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. 111)Ir GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 I Date Apr. '83 'Plate 11 TEST PIT NO. ___Z____ Logged By JRD Date 4/1/83 - Elev. 13— Depth W (ft.) USCS Soil Description (%) 0 - q=.5tsf MH Brown clayey SILT, soft to medium stiff 81 i ML 5 -- I -"1""' SM Blue gray silty SAND, medium dense, wet 32 Test Pit terminated at 8.5' due to caving. 10 —+ Moderate to heavy groundwater seepage below 3' . 15 - JRD Logged /1/83 TEST PIT NO. Elev. 15± Date • 0 •' ML Brown clayey SILT to SILT with sand, soft, damp 41 _ I qu=.5- 1.5 tsf 5 — MH Brown clayey SILT, soft to stiff, wet 96 _ (Below 12'-some peat mixed with clayey SILT) SM GraysiltySAND, medium dense, wet 10 Test Pit terminated at 11' . • Moderate groundwater seepage below 3' , heavy seepage at 8' . 15 • TEST PIT LOGS • • 01041BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. • •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 J Date Apr. '83 [Plate 12 • TEST PIT NO. __9 Logged By JRD Date 4/1/83 Elev. 17- Depth W (ft.) USCS Soil Description (%) 0 45 qu=.5tsf • 5 — MH Mottled brown to gray clayey SILT, soft to stiff, - ML damp fill -1I1 j; qu=1.0tsf -III !i 10 -... 1 iI �I� :Ij1 51 . - HII _ Test Pit terminated at 13' . 15 Minor groundwater seepage at 12' . Logged By JRD 17± Date 4/1/83 TEST PIT NO. I Elev. 0 ;l1ii _ ;;;i ML Brown SAND with silt-SILT with sand, medium dense, - •t;t_t.t: SM damp . 45 1-2 ~ qu tsf 5 —1111 1 , MH Gray clayey SILT, stiff, damp ML . i:i• 59 r- ill!! 10 Test Pit terminated at 9' due to caving. t•Ioderate groundwater seepage below 6' . 15 TEST PIT LOGS • BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. V$ •GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 I Date Apr. '83 !Plate 13 TEST PIT NO. Logged By JR Date 4/1/83 Elev. 13- Depth W (ft.) USCS Soil Description (%) 0 - • 46 qu=.5-1 MH Brown clayey SILT, soft to medium stiff, damp tsf ML 5 — III _IhI1i 54 Test Pit terminated at 8.5' due to caving. 10 Light grading to moderate groundwater seepage below 4' . 15 • • Logged By JRn TEST 17- Date 4/1/83 ST PIT T N O. _I2- Elev. o CL Brown clayey SILT, soft to stiff, damp ML q =.5- 1.5 tsf LL=45 PI=13 5 :1I 31 SM Blue gray silty SAND, medium dense, wet 10 — Test Pit terminated at 9.5 ' due to caving. Moderate to heavy groundwater seepage below 4' . 15 TEST PIT LOGS 010• BLACK RIVER OFFICE PARK • Earth RENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 [Date Apr. '83 'Plate 14 TEST PIT NO. Logged By JRD Date 4/1/83 Elev. 13- Depth W (ft.) USCS Soil Description (%) 0 • 84 q =.25- - u ` f Brown clayey SILT, soft to medium stiff, damp is ML • 5 --I I I i j (grading to blue gray at 5' ) 38 qu=.75 tsf Test Pit terminated at 8' due to caving. 10 Heavy groundwater seepage below 2' . • 15 Logged By J Date /1/83D TEST PIT NO. -L� Elev. 13± 0 - MH Brown clayey SILT, soft to medium stiff, damp 37 =.5- qu 5 _ 1 tsf i . SM ' Blue silty SAND, medium dense, wet 30 10 _ Test Pit terminated at 9' due to caving. Moderate to heavy groundwater seepage below 3' . 15 - • TEST PIT LOGS BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. ° 41 •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 IDate Apr. '83 !Plate 15 TEST PIT NO. 15 Logged By JRD Date 4/1/83 Elev. 15- Depth W (ft.) USCS Soil Description (%) 0 • — MH Mottled brown clayey SILT, soft to medium stiff, ML damp 43 qu=.5- 5 ?i 1 tsf ^.... ML Blue silty SAND to sandy SILT, medium dense, wet 38 aa' SM Test Pit terminated at 8' due to caving. 10 — Heavy groundwater seepage below 4' . • • 15 Logged By JRD 14- Date 4/1/83 TEST PIT NO. Elev. 0 -- - 46 q u=.5- 1 tsf 5 -- MH ML Brown clayey SILT, soft to medium stiff, damp 46 qu=.5- 10 1 tsf - Test Pit terminated at 10' due to caving. Heavy groundwater seepage below 4' . 15 TEST PIT LOGS _/; • • BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. • •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 Date Apr. '83 Iate 16 • TEST PIT NO. _IL_ Logged By JRD Date 4/1/83 Elev. 17• Depth W (ft.) USCS Soil Description (%) 0 K. SM Dark brown silty SAND to sandy SILT, medium dense, ML damp (FILL) 26 • 0 • � fi • 5 — ii l • • :, ML Gray stiff clayey SILT grading to SILT with sand • :;{ I and sandy SILT, medium dense, wet • 43 10 —r Test Pit terminated at 9' due to caving. Heavy groundwater seepage below 3' . • • 15 Logged • By JRD /5/83 TEST PIT NO. _ Elev. 13- Date • • .� q u=.25- - 53 .5 tsf MIL 5 _, AL Brown clayey SILT, very soft to soft, damp • i • i'•i 42 qu.5tsf Test Pit terminated at 10' due to caving. . • _ Heavy groundwater seepage below about 3' . 15 • TEST PIT LOGS BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 1 bate Apr. '83 'Plate 17 I TEST PITNO. -L_ Logged By JRD Date 4/5/83 Elev. 24- Depth W (ft.) USCS Soil Description (%) •�• ••♦.: • • ••i•i • 5 ••• ML Blue gray clayey SILT, medium stiff to stiff,damp 32 qu 1.0 �i4 (FILL) tsf •i• i• • •• • 10 ••' - MH Brown clayey SILT, stiff, damp 41 qu=1.5 tsf Test Pit terminated at 13' . 15 Heavy groundwater seepage below about 12' . Logged By RD Date /5/83 TEST PIT NO. 20 Elev. 23- 0 xxx " < 4" 12 • 5 1�� ML Dark brown clayey SILT with large pieces of �." concrete and some wood, medium stiff to stiff, ,<„'(< damp (FILL) x< 10 --- A 29 Z'X _ Test Pit terminated at 13' . 15 Heavy groundwater seepage below about 12' . TEST PIT LOGS 00 BLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 I Date Apr. '83 'Plate 18 TEST PIT NO. _1 Logged By JRD Date 4/5/83 Elev. Depth W (ft.) USCS Soil Description (%) J . k 18 ML Dark brown SILT with clay, sand, and concrete 5 and miscellaneous debris, medium dense,. moist to K. damp (FILL) 10 MH Mottled brown clayey SILT, stiff, damp _ 39 tsf Test Pit terminated at 13' . 15 r Moderate groundwater seepage below 12' . TEST PIT LOGS BLACK RIVER OFFICE PARK . RENTON, WASHINGTON Earth Consultants Inc. 414' GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 IDate Apr. '83 Iate 19 TEST PIT NO. _22__ Logged By J RD Date 4/5/83 Elev. 16- Depth W (ft.) USCS Soil Description (96) 0 SM Gray gravelly silty SAND, medium dense, moist(FILL) 9, 5 --I H1 —I Ii 38 LL=42 I ML Blue gray clayey SILT, soft to medium stiff, damp PI=10 10 34 Test Pit terminated at 14' . 15 -- Minor groundwater seepage at 13' . 20 • • • • • • TEST PITOFF LOGICE S r ' 40r BLACKEarth RI PARK / RENTON, WASHINGTON • Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 1 Date Apr,'83 'Plate 20 • . • TEST PIT NO. Logged By J RD Date 4/5/83 Elev. 16- Depth- W (ft.) USCS Soil Description •(%) 0 • SM Dark brown gravelly silty SAND, medium dense, • moist (FILL) ML Blue gray clayey SILT, stiff, damp (FILL) 23 ICI 5 —'!;II - Ii;! 31 - H,1:; ML Mottled light brown SILT with trace of sand, loose to medium dense 10 —, •!; • (grading to sandy SILT at 10' ) 34 _ Test Pit terminated at 13' . Minor groundwater seepage below about 11' . 15 • • TEST PIT LOGS 4114)111111 BLACK RIVER OFFICE PARK EarthRENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 'Date Apr. '83 'Plate 21 TEST PIT NO. Logged By JRD Date 4/5/83 Elev. 16- Depth W (ft.) USCS Soil Description (96) 0 : \ - SM Brown silty SAND, loose to medium dense, moist(FILL, 17 • 5 ML Mottled brown SILT with trace of sand, loose to medium dense, damp (FILL) 34 10 -<. ML Tan silty SAND to sandy SILT, medium dense, damp - ' SM (FILL) - { 30 15 — Test Pit terminated at 14' . No groundwater seepage observed. 20 TEST PIT LOGS 4itBLACK RIVER OFFICE PARK Earth RENTON, WASHINGTON Consultants In& GEOTECHNICAL ENGINEERING & GEOLOGY Prof. No. 1990 I Date Apr. '83 1Plate 22 TEST PIT NO. Logged By JRD Date 4/5/83 Elev. 18- Depth W (ft.) USCS Soil Description (%) 0 •4•4•4, • •�� SM Gray brown silty SAND to sandy SILT, medium dense, ��•�•• ML moist (FILL) ;.�• 19 -�• • c =.5tsf .5 ML Blue gray clayey SILT, soft, damp I I I� II 35 irI' -I l� ML Brown silty SAND-sandy SILT, loose to medium dense, 10 --��:�...; SM wet 40 _ Test Pit terminated at 13' . 15 Heavy groundwater seepage below about 10' . Logged JRD /5/83 TEST PIT NO. _6_ Elev. 14- Date 0 ML Brown SILT with trace of sand , medium dense (FILL) 31 5 — 211' qu=1.25 II I, tsf - 11 H ML Brown clayey SILT, stiff, damp LL=33 39 PI=5 -.I Ill; 10 �:�: SM Brown SAND with silt, medium dense, wet 20 Test Pit terminated at 11' due to caving. Heavy groundwater seepage below about 6' . . 15 TEST PIT LOGS BLACK RIVER OFFICE PARK ' Earth RENTON, WASHINGTON Consultants Inc. •GEOTECHNICAL ENGINEERING & GEOLOGY Proj. No. 1990 I Date Apr. '83 'Plate 23 SIEVE ANALYSIS HYDROMETER ANALYSIS SIZE OF OPENING IN INCHES 1 NUMBER OF MESH PER IINCH.pU-S.STANDARD _tp q GRAIN SIZE tIIN McQM} 8 s N N' m O C g ? 2 S G 8 g g `O N F� S. O O O ` a 61 .- t0 V fh N i-.— .—ci 0' of .1- V CO.-. t0 N OD mA 100 i �l 0 Lj.'"....tj\I:.\:\\' Z yn 90 . �a -•ti - - 10 m0 m60 ` - 20 .40, \\\ , H 70 - z m 70 p © 30 33 '\ ' inA - - m 13 Z T 60 - - i- _ 40 -+ 0 XI . -, \ __ SI le' 03 — o m '�� 0 .40 , I - -- 60 70 m -�-- co ,=,I. 30 1 _ 70 Lr m . 1 o 20 - - - 80 o 10 -s TrI 90 rCO -. G) 0l I I 1II I I 1_ LIIIII_ I 1I I I I I I _1 `-� III �p p t�pp s� 100 XI Lu (7 0 O O COt00 0 f07 N 0 °0 10 M N OD t0 P7 N O O O O O 0 0 0 O O O O v N D CO N GRAIN SIZE IN MILLIMETERS ' c O Pc? o O ,a,► _ O xJ. Z COARSE I FINE COARSE I MEDIUM I FINE CD Z C c N n COBBLES GRAVEL SAND FINES ro y m n x 0 Z Boring or DEPTH Moisture • H D KEY Test Pit No. (ft.) USCS DESCRIPTION Content(%) LL PL w z H , �. o c o B-1 12.5 MH clayey SILT 41 52 18 z ro N m B-2 17.5 SM/SP SAND with silt 20 Q B-6 0.0 ML sandy SILT 16 • • —•— B-6 17.5 SP gravelly SAND 10 SIEVE ANALYSIS HYDROMETER ANALYSIS SIZE OF OPENING IN INCHES I NUMBER OF MESH PER INCH.U.S.STANDARD GRAIN SIZE IN MM r)� 40 a in N r- ib" a g0� kJ' O ? R DOD 8ggor g § } QQ• Ro g A 00 o Z 90 `ft • NA 10 r- m 6U E 244 "con 2 • A m so — - —illir — Ns, ZIP m \ . O mle W 50 -- - D O W — -- - - ------ - 1- 507 o { — m .�A 40 _ - ---- --- — _ — — — -- , 70 m — `— so 11 � 30 70 m I V 6 \oz0�00 D 20 10oNI II1111 l I 000MNCD {0 s0 - IIIIII - 1 I ilk- OmO OMN --- Milli I I 'I •- O 0 V PI N _ O O O O O 4\ 90 100 O O O O O vz GRAIN SIZE IN MILLIMETERS ' 0 0 0 0 0 0 COBBLES COARSE I FINE COARSE MEDIUM I FINE co Z H — , GRAVEL SAND FINES b yZ m K to 0 Boring or DEPTH Moisture o.. z H D KEY Test Pit No. (ft.) USCS DESCRIPTION Content(%) LL PL a n _<w ■� 0 1-3 ll N O TP-4 7.0 SM/SP SAND with silt 39 -9 z ro in `° ,A------ TP-12 4.0 ML clayey SILT 39 45 13 N "' TP-24 13.0 SM silty SAND 30 .� _ mil, f., - SOIL'INVESTIGATION PROPOSED DRAINAGE CHANNEL = EARLINGTON INDUSTRIAL TRACT ' FO.R " ,, • ' • ' 'PACIFIC COAST•RAILROAD COMPANY ' . rSEATTLE, ' WASHINGTON ` FEBRUARY 19 67 ' 4 • : • ;>>`1 ' ' :BY • • : ''.SHANNON & WILSON,:.INC. - • y ' SOIL MECHANICS AND FOUNDATION ENGINEERS ' • 1105 NORTH-38TH STREET • ` SEATTLE, WASHINGTON ' E 2 •. 3 . r CO.'.' o kb/ /, �'' (of ' // o 4,C) PROPOSED z `� r/./ to 043 PUMPING PLANT a: • :-rt3: a /f ;.\ %i / /O /-0`" /1 • B`/O �(� ci �Q <Q ,gyp / Do `\ a. T I / // t. 'r,.6. N`\ , / \\ _�, 1 \ crro ( / , , 43 /5 EQUATION �\ / / 0ti Tp ' ,' /0 ``\ 'i/l/ 471+30AH / i QtL QX - .77/ 466t658K/ �ta.47$±351.,,,,,,,,,,,,,,..."4,,, - i' ��� Q� p� B...: ,zo.. ��O TA feG \ta i Sta.516+35 o r `'� p/t GOLF COURSE 0 • CZ/ 1 7--- ' :,3 C 6N\ ,l 4") S t a.49 I+9 5 ,, SCALE: In =400' Proposed channel for • • flood prevention and • drainage-Soil Con- servation Service and local sponsoring agencies I - - EARLINGTON INDUSTRIAL TRACT---N. • I( I LEGEND • Boring location ) • • • PACIFIC COAST RAIL:ROAD,COMPANY • ■ = Test Pit location . EARLINGTON INDUSTRIAL TRACT LOCATION ; .. . OF EXPLORATIONS ' DEC. 20, 1966 W-0770-I& WILSON SOIL MECHANICS & FOUNDATION ENGINEERS • FIG. -�O w cnQ SOIL DESCRIPTION z '►' w �� PENETRATION RESISTANCE O U ! ,t w� r�_. I �� (140 lb. weight, 30 drop) �� °Q .. Siw 3 Blow 'oot I. S i Surface Elevation: a o OL Medium to very soft, brown, clayey SILT 0 I 0; 8. • w/organic matter OH 2 ( 1.-. 4 5 *• • �� 5i A 7.5 OL Very soft, blue-grayorganic, clayey SILT w/ 6 a • matter L . .: HSI ' 1 • OH 7i - I0; A . k r . N 8I is 1- �. 9 i • i ,� 14.0 10 '. 15 t SP- Gray, slightly silty, fine SAND — II i • SM 16.5 • • 20`.__ _- ---'-• . • • • • • • • LEG ND ,.. ;.•, ' E F r`X1lfterbei'r :�lfmi��a.- =-la:.'...�:,,.,. .t `F• , g, t �,,,�::�� + .,, •��� . o Wbter`'co`ntent n ,L •ui Ilm a• i` i • .t... 4 2 0.0 s``•lit s oon�som le = _ Natural water content• .. O D:.thi .;ti '. faticli (t . .�� n=woll.s.omPl •;P m ;5.' < ,' �.T,. ..,f.v hi .!� RIN P:. Sam (er�• ushed'- :�.` ,:;�� _.,. rr • ? . LO.G V 0 aE Sam' le not recovered;' ,'-,.:.: a " { kiNG•'N 101 Q Water. level �:;:•,;::.!• .4;�`A • - -- ., ''':!, .''. arc•,:., , .-oil, �•��•-..�� .,, ,a; :,�,�;�>•.�'; ::.� . •QEC ::.20,.•19�66 ,•VY•, 0770�i Im envious Seat • •'• + r,tl:z:.1 x,�,0•3 Wy`' t., cr,.• ;;,4 .. ..i , • Plezometer lip,. ut;.,,.z ., .ir'%OIL MECHANICS & FECUNDATION [NG$NEER® FIG. 3 JZ m \ ! v�iQ SOIL DESCRIPTION �' w. z� PENETRATION RESISTANCE U w� = aJ �H (140 lb. weight,30 "drop) r-N - a g a s za , a 3 A Blows per foot �-� Surface Elevation: o rn .0 20 40, OL ' Medium dense, brown, clayey SILT 0" I 0 . w/organics "- T. 210. 3.0 �.. SM Loose, brown, silty, fine SAND 3 +► � 'Je 4 ' S s _ . 5 t 7.5 " 1 ML Loose, gray 8 brown, fine sandy SILT 6 9.0 — OH Very soft,:gray, organic SILT apeaty T 10 • \�- SILT _ 8 163 —.-. 9 �� lO _ i SP Loose, gray, clean, medium to fine SAND 15.0 II - 15 -- 20 ' ---- — • • 1 r: ; :; '0 '50' 100 LEGEND . Atterberg limits • ...'.• /Q':Water'°confent 1----\1.. L1uId4- IimitI . O:Dspllt.'spoon sample '—Natural water content "' 0:D;thin-.wall sample Plastic limit Q:1.. :.;I ;E,,, :::Sample not recovered - : BORI•NG. N.O.-1d2 ` . ,:Q."; ':.Water .level ' .. • _ • . .., _:w „ ;• ... ..,,, _ DEC 20' 1366 W-0770-1 ' >;: lm pervious seal SHA1 ,QN'i9:;1Ni1.10NV' • " °*,, fo�k:'MRCHANic & MOUNDATION [MdINE[R$ :�.Pieometer'�'tip" , .. . , - ' -FIG. 4 aOiQ SOIL DESCRIPTION 'v w 0 c PENETRATION RESISTANCE W_ I Q_ DI (140Ib. weight, 30��drop) 4•6 ~ g OQ za a. < cc 3 A Blows per foot D U Surface Elevation: a N 0 20 40 • OL Medium dense to soft, brown to gray, 0 I 0 } • SILT w/organics _ t 2 4' 3.0 — SM Loose, brown to gray, silty, fine SAND 3 4. -- 1 4 5 • 5 1 - 75 — .. SP- Loose, gray, slightly silty, fine SAND 6 9( SM 70 10 8 i • 12,0 — ; SP Loose to medium dense, gray, clean, 9 coarse to fine SAND — / 10 0PPP — 15 • II { 12 Er 18.0 — • • t 20 • 3 - • : 0 `.50 100 °'• :°''mot . , r.. �LEGEN D - Atterberg.limits: • '/o Water content. - - :,-•.,�. - '; - .... ''-Liquid limit •z`.' :> . *T`.`' ;`2.; '.O.D. split spoon sample. ` �_ :• ,` ` Natural water. content:;' ` ' � O.D:thin-wall sample Plastic limit • • ': =P. ' Sampler pushed •.k • . •,,-,,::';.: LOG', OF. BORINp '!- :`# •Sample not recovered � :V BORING NO. 103 • Water level DEC. 20, 1966 W-0770-I `" ' + Impervious seal 1 $HANNON & WILSON � '••SOIL MECHANICS & FOUNDATION ENGINEERS Piezometer tip FIG. 5 Z m E J O �Q SOIL DESCRIPTION .°_' w acr PENETRATION RESISTANCE ] w� z a D� (140 lb. weight, 30"drop) I- z a - w a 3 ♦ Blows per foot - Surface Elevation: a U 0 0 20 4Q_ OL Loose and soft, brown, clayey and sandy 0 I 0 SILT w/organics . 2 • 3 4 • 4.5 — 5 SM Very loose, gray, silty, fine SAND 4 )11 5 K 6 - 7 10 10.5 -- • SP- Gray, slightly silty to clean, fine SAND 8 SM — I i ill IN')ik 81 SP 9J15 I 10 4 ~I �I ' 18.0 20 - --- . LEGEND' .. - erberg'limits: 0 " e/o W f5:9 .;` . 100 j Att • /o o er:-content I 2i,', rO.D. split spoon sample .•:F----�-��-Llquid limit - -Natural water content 0.0.thin-wall sample Plastic limit . : P Sampler:,pushed., ''` . LOG O F B �:.:.,''. . 4- ' ,Santiple:'not recovered BORING NO. 104.....: V Water'le.vei DEC. 20, 1966 VIP=.0:770=1' • .. Imperyious',+seoL •',,: i:' • SHANNON Ik WILSON r..- • — ' ' Oleiom eter ti'p &OIL MECHANIC& a>< POUNOATION ENGINE&R9 FIG. 6 V)Q SOIL DESCRIPTION CO V c' cc PENETRATION RESISI ANC. -_ ; W 0 _ (140 lb. weight, 30'�.drop) Oa—co�) a M • z a w a c 3 A Blows per foot • Surface Elevation: n In 0 0 20 40 OL Medium dense to soft, brown 8, gray, 0 I 0 ♦.\ clayey SILT w/organics — I 2 �i�CCCC4 3.0 — 1 - SM Very loose, gray, silty fine SAND and 3 4 fine sandy SILT 1 M 4 5 • 5 -1ll ----- 7.5 — / SP Loose to medium dense, gray, slightly 6 il a silty to clean, medium to fine SAND I 7 SP- 10 . i : SM • 8 •• 9T 4 10 - 15 i • II it 12 iP -r 1 13 • 19.5 20 --- , - 1 • • • r ; I 100 . .; ..:LEGEND. . ` �' ;' ; Atterberg !milts: • % Water content I '2" 0.D split spoon sample 1-7-4—Pie-Liquid limit Natural water content . • {•. v, . . O.D.thin-wall sample ; Plastic limit • mg) . Sampler pushed • . • LOG OF B OR.ING• .46 Sample not recovered . , BORING Na.. 105: • °.-, V •Water level ;:; •. DEC: 20 1966~ W�0770-I ;:';:; - Impervious'.seal : '''SHANNON •&.WILSON PIAZOmeter tip . SOIL MECHANICS & FOUNDATION ENGINEERS _ • FIG. 7 Z •. , i -j O m aoiQ SOIL DESCRIPTION w w o � PENETRATION RESISTANCE w� _ a D (140 lb. weight, 30"drop) Erh a 2 0< • _l • - w a c 3 ♦ Blows per foot U Surface Elevation: o to co 0 20 40 ML Soft and loose, gray and brown, slightly 0 I 0 ¶ 8 clayey SILT to very fine sandy SILT, 2 — OL w/some organics • 3 — \ _ 1 • • 4 5 r - • 5 t -- 6 •-. 9.0 -•- : OH Verysoft,brown,peaty SILT 7 10 �' 8 ,• 12.0. — SM Gray,silty SAND,peat and organic SILT 9 •' PT • , r' OL 10 ' 15.0 --- 15 SM Medium,black,silty to clean fine SAND II /?A to • SP 12 ` • 13- •` 20.0 14! 20 • OL Soft, light gray,organic SILT 21.0 - 1 - • • • • -.,: • • • 0 , .100 'LEGENDS ; Atterber limitsi •• •' %'Writer content 9 ;,t.,. F-- •-f�-Liquid limit :: .I" ':2:, O.D.•split spoon;sa.m:ple' • .'; •• -. . ••• . Natural water content • �� i =0.D:thin-wall sample : Plastic limit ; .. .: • F '`Samples:pushed: , . . LOG F BOR'1N:G II. , . Somple.not recovered • • BORING.- NO. :106 V :. water level : DEC. 20, 1966.:`.' . W-0770-I - Impervious seal, .' • NAMNON.`ai`WIL$ON PIAZometer tip ion:MKCNANIcs s FCIUNDATION ENGINEtRi . FIG. 8 Z -�O a�4- - oQ SOIL DESCRIPTION '.- w PENETRATION RESISTANCE 41� a 0� (140 lb. weight, 30"drop) -� o i s w a a 3 A Blows per foot D -1 Surface Elevation: a (n 0 0 20 40 OL .Soft, brown and gray, slightly .clayey 0 .l 0 • a e SILT to very fine sandy SILT w/organics 2 — i ML •‘( % • 4 5 — OL Soft, gray, slightly clayey, org. SILT- odor 5 ra 7.5 OH Soft, y,peaty,organic SILT 6 % 0 :7 10 -4. • ra11.0 8 OL Soft g y,peaty,organic SILT a silty fine SAND T a 9 SM 13.5 — .. / SP- Black,sl. silty to medium to clean fine SAND 10 •' SM — 15 I to II �• " SP — i 12 • 13 • 14 20 — , 21.0 — • • • 0 50 100 LEGEND Atterberg limits: • % Water content I 2 0.0. split spoon sample I S• I Liquid limit. \ Natural water content I .0.0.thin-wall sample . . �----Plastic limit . . P ; Sampler pushed • LOG. OF BORING . . -- * Sample not recovered . " . •' • -BORING NO. 107 V Water level DEC. 20, 1966 W-0770-I Impervious seal , SHANNON & WILSON Piezometer tip SOIL MECHANICS a FOUNDATION ENGINEERS FIG. 9 a . Jp m CAQ SOIL DESCRIPTION y' w o PENETRATION RESISTANCE W� _ a D� (140 lb. weight, 30"drop) a oa Z a w < 3 ♦ Blows per foot D Surface Elevation: 0 rn 0 20 40 ML 'Medium to loose, brown agray-brown, I 0 t & clayey SILT & fine sandy SILT w/organics — , OL • _2 : 3 _ 4 541 5 ` 75 . ... SM Loose, gray, silty, very fine SAND 6 4 • 10 . ' 10.5. • OL- Soft,gray,peaty,organic SILT and mottled 7 • OH I organic CLAY .� • �� 1 8— h\c/ 13.5 SP • Medium, black,sl. silty to clean, medium to 9 a fine SAND — 15 SP- 10 SM 1 — II 4 , , 121 20 1 , TT , .41/ . . 23.0 131 +ti • ML Blue,fine sandy SILT w/wood 24.0 • 25 • • LEGEND . 0 •.•:: ':,,.50 _,.'::,:• ::.F` 0021 Atterberg limits: j• %.Water' CoOf,8nt.;-:' I 2" 0.D. split spoon sample .• F—���Liquid limit Natural water content QD.thin wall sample Plastic limit "� ;`� ,' ';: .;>5 `���., P Samplerpushed jF4` p • LOG OF::8.0RING :c::.', :\;,:: * Sample not recovered BORING. W..108F•r Water level `._ ' ;.;•.,. ; . . • DEC. 20, 1966 ,�.W- 071.,0 +r Impervious Seal, SHANNON}ai wii.SON '- ;; A L: , Piezometer tip SOIL MECHANICS M rOUNO6TION .[Ha1NEtrlt �'.`:y• FIG. 10 �Q SOIL DESCRIPTION Cl) °� PENETRATION RESISTANCE W� = a �� (140 lb. weight, 30"drop) I� a. OQ zU Surface Elevation: ILI Q °C3 ♦ Blows per foci --- `� cn O 0 20 4 Q_ OL Soft, brown and gray, clayey SILT w/ 0 1 0. organics• / elL. — 2 • 3 * fl _ 4 5• — i 5 T 7.5 - , SM Loose gray,silty fine SAD ,cleaner w/depth 0 • 9 7 10 _---+ I 8 k \Brown, peaty SILT 12.0 -4. N‘ / 12.5 9 i! SP- Black, sl. silty to clean,fine SAND 10 SM — 15 . to II • SP _ I 12 y 13 0 14 20 ----- -------1 • SP Black,coarse to medium, SAND w/gravel. 22"0 15 layer 16 -24.0 — • 25 LEGEND 0 ' , i: .50. . 100 Atterberg limits: '04 Water;.content- ' I 2 0.D. •split spoon sample -1 -Liquid limit Natural water content If 0.D.thin-wall sample : Plastic limit P Sampler pushed r LOG OF BORING - # Sample not recovered ~, BORING N0. • 109 : " Woter level - -. f DEC. 20, 1966. W-0770-I Impervious seal •-SHANNON`& WILSON - : ' Piezometer tip SOIL MECHANICS aY.FOUNDATION-ENGINEERS FIG. 11 Z .. . .. ... .... ... .. ... .. - J,O t 6a SOIL DESCRIPTION .- w ' PENETRATION RESISTANCE � w o Ov J ZL i� w� - = a DF- (140 lb. weight, 30 drop) I'—uNi d 0< z a V - w Q cr 3 . A Blows p er foot D-I Surface Elevation: o (9 0 20 40 SM Medium dense; brown, silty, fine SAND 0 I •O �• w/organics _ - 2 li 3.0 - I ML Loose, brown, very fine sandy SILT 3 } - I 4 56 . SM- Loose,brown to gray silty fine SAND a fine 5 } ML- sandy SILT w/organic clay layer - 1 OH 6 L .►. 1 7 10 8� } 9 13.5 - 1 SM- Loose to medium,gray,silty,fine SAND to fine 10T ML sandy SILT. _ 15 1 II } I 12 11 18.0 - /r SP Loose to medium,black,clean to sl. silty, • 13 a fine SAND 141- SP- 20, * - -4— SM 15 16 4 24.0 1 25 LEGEND .. • 0 50 100 i.Atterberg limits: • % Water:content . :, L S-I�+-Liquid limit I .:•:.2 :• O.D. split spoon sample .:. , . ; • Natural water content Jr •O.D.thin-wall sample; Plastic limit F. :.`Sampler pushed ; LOG OF•8 ,.. a OR ING .* Sample n•ot recovered V , .Water lever: .. BORING No. I10 ,Impery DEC. 20,1966 W-0770- Ious.:seal • SHANNON 1.WILSON 7, ' Plezometer tip • • SOIL MECHANICS & FOUNDATION ENGINEERS ' FIG. 12 0Q SOIL 'DESCRIPTION w w PENETRATiON RESISTANCL w_ = d zu (140lb. weight, 30"drep) z a w Q 3 A Blows per fo(; U Surface Elevation: 0 o 0 20 40 � r _ OH- Very soft to soft,brown and gray,clayey.SILT 0 I 0 t OL and silty Clay w/organics and occ. sandy layer 2 t i 3 1 4 5 - -- -- - • 5 `-" P- 6 A . . 7_ 10 1T, ,� i 8 • j. 13.5 9_ SP Gray, clean to sl. silty, gravelly SAND 10 15 _ .� SP- 11 • }�� /1 SM 12— 4 13 19.5 i. • , • 0 • 50 100 LEGEND Atterberg limits: • % Water. content �� I--�-I'+-Liqu id limit I. 2 - O.D. split spoon sample 1\ -Natural water content O.D.thin-wolf sample Plastic limit • P Sampler pushed • LOG OF BORING • .at- Sample not recovered • BORING NO. V , ,Water level DEC. 20,1966 ' W-0770-1 •Impervious seal . . SHANNON & WILSON Piezometer tip - SOIL MECHANICS a FOUNDATION ENGINEERS FIG. 13 - • TP - I TP - 2 TP -3 TP- 4 TP-5 OuSc V O use O uscl O use _ O use OL I Gray a brown, V OL Gray 8 brown, OL ; Brn. 8 gray, clayey SM Gray & brown, silty, SM Reddish-brown,silty, slightly clayey slightly clayey I SILT w/organics fine SAND w/org. fine SAND w/trace • SILT w/ SILT w/organics 2 I I of organics SP- Gray, slightly silty, • I • t organics • SM fine SAND • 6 6 6 OL Blue-gray, slightly OL 1 Blue-gray, slightly SP Gray, clean, medium 7_—L 7 clayey, organic clayey, organic to fine SAND w/ SM Blue-gray, sil`y,fine SM Blue-gray,silty,fine SILT SILT trace of medium to I SAND w/organics SAND w/trace of . 9 9 \ coarse SAND 9 i organics OL Gray-brn., slightly 10 --..--. clayey SILT w/ .SP-1Gray,clean,fine SAND I I - organics 11 1a TP- 6 TP -7 TP-8 TP-9 TP-IO O use O use 0 use 0 use 0 use �. OL 1 Gray 8 brown,slightly ML Brown, slightly fine, OL Gray 8 brown, OL l Gray 8 brown, SILT OL I Gray a brown, org. clayey SILT w/or- sandy SILT w/org. slightly clayey w/organics SILT w/organics ganics SILT w/organics y I i ' ` 5 ML Gray- brown, fine, SP- Gray, slightly �, sandy SILT I SM ':I silty, medium to = ( I fine SAND 8 ` 9 /SM\I Blue-gray,silty,-\\_ __ _ 9 _ OL Gray, organic SILT a fine SAND a fine, 9 9 SM Gray, silty, fine 10 OL Gray, organic SILT 10 ML sandy SILT w/org. I I SAND SP-S� I I ,OL Dk. gray, peaty SILT I 1 1 • TP- I I TP-I2 TP-I3 TP- I4 LEGEND o use . O use o usC o usC OL Gray a brown, OL Brown a gray SILT - OL Brown, clayey SILT OL Gray 81 brown, V Ground water level clayey SILT w/ w/organics w/organics slightly clayey USC Unified Soil Classification organics SILT w/organics 3 • SM r—Dark gray,slight• - I ly silty to silty ' SP- fine SAND 7 --- — SM ML I Gray, fine sandy - - EARLINGTON INDUSTRIAL TRACT _ SILT _ 9 t 0 ML —Gra fine sand SILT 9 OH Brown, peaty SILT . TEST PIT LOGS OH Dark brown, peaty 10 y' y 10 - • 10 I SILT • I I OH _ Dk. brn., peaty SILT I I OH Dk. brn., peaty SILT 1 I SM TP- I THROUGH TP-14 - DEC. 20, 1966 . • . W-0770-I SHANNON & WILSON SOIL MECHANICS & FOUNDATION ENGINEERS FIG. 14 T. • `i use TP - 15 _ use TP- 16 OL Gray-brown, clayey OL Gray 8 brown, SILT w/organics - • clayey SILT w/ organics 7 -- ---— SP- Gray, slightly silty, SM fine SAND (SP-L_ 9 to Gray, slightly silty II II SM to silty, fine SAND TP -17 TP- I8 o use o use OL Brown, clayey SILT OL Gray-brown,clayey w/organics SILT w/organics 3 -- w SM Gray-brown, silty, �'- fine SAND • f- 7 . n- OL Blue-gray, clayey,. organic SILT II II t TP-19 TP-20 OusC ousC OL Gray-brown, clayey OL Gray a brown, • SILT w/organics clayey SILT w/ organics • • . . _ ifs‘:. OL Blue-gray, organic, clayey'SILT,:, " 9 OL Gray, cla e y y,org.SILT • 11 II• I PACIFIC COAST RAILROAD COMPANY LEGEND. EARLINGTON INDUSTRIAL TRACT• USC. Unified Sail Classification. • TEST PIT LOGS TP- I5 THROUGH TAP-20 DEC. 20, 1966 W-0770-I SHANNON & WILSON SOIL MECHANICS & FOUNDATION ENGINEERS FIG. 15 • r.. • r. P' tt 4' - J]' •12:. 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'l' - Y i� -'f' iN: .n. -� i.Ty,;, it-e r h;. a,'...r`:. raj r lau^ .r� r?c•s ram`. �Yf i11 1, 'ray 1 • ,+ :r•, o • :r; •d' „Y,, .,..%t_v%'"' ,,tom!. _kr. - - yry.c • r• -a�' (, - :9 rM1I, _ V'S.'''.:,- :. 'k •1' • _ '!iw'' (} r T,;' t t l.s '� 'r,l. ti��i 'f .l' i:7' �i,it;' l v(,'ems - S r�`,-ter]:!)•:t f'.: ,r - r' I'3 T f '•f't A ,r,. :iY'� '14 •`THY .s 'rY •l• d f L.•' l S i,,, C. 1 't'.t r" - r ;c, CONSERVATI� -- ICE L "tV ---------�_�_ -67 YATERSHED EasL Side Green River SUB-Y. _r2SH ED SITE No .00ATION OWNER STATE King County WA OGGED BY DATE PROJECT: John A. Wilson `" 1/15/81 WP-07 WP-O8 X FP-03 P.L--46 . . TRILLING EQUIPMENT LOCATION OF HOLESIE 1 Channel B-61 Track Mounted Rig HOLE • U SAMPLES STA. & ' DEPTH S TYPE l 2 HOLE SURFACE FROM TO DESCRIPTION OF MATERIALS I FROM TO CSE. REM. REC. N C BIT NO. TYPE MI NO. ELEVATION FT. I FT. S USED FT. I FT. % DIN.AM. 96 1 0 1 BLWS/FT. 400 7/9 z1 D I3.5 Silt, plastic, dk. gry. org. _--- H 3.5 4.0 I 2 0 4 .014 .5 3 0 141C 3:5110.5 Silt, non-plastic, brn. org. odor, soft L 4 .515 .0 3 I S 10 ,10. 5 f 1 10.51 13 Sand, silty, VF, brn. W.T. @ 12.5' M 1.0.511 .0 I 1 S -1 .0111 .5 2 13121.5 Sand, poorly graded, F-M, dk. gry. wet P 15 5.5 I 1 -- TD-21 .5 Ft. - - -- — -- — L5.5 6.0 - I 2 L 6._016.5 3_ ______ I - 2.— -- - ------ - - -- 0.S 1..C 1 3 --- -- - - - -- - -- -- 1_0121 .5 6 0 3.51 4 1 _ 401 0K 014.0 Silt, plastic, dk. gry. org. - H 4 4 .5 I 1 / L�_ 41 17 _Silt, brn, non-plastic, org. odor, soft, L • 4.515.0 1 17 ,21 .5 Sand, poorly graded, F-M, dk. giy. wet 5.017. 2I Pi E -- W.T. @ 13.0" - -- -----8 -- ---r -- -- 1 .. _._. 1. TD-21 .5 Ft. Y - --- —— 10 10.5 i 1 I 10. 5111 . 0 2 •- - _... _ . .. ---j1 . 512.0 12 15 115.5 I 1 15 .5116.0 I 1 I 16.(116.; 2 . 20 20.5 2 I. DISTURBED-UNDISTURBED-ROCK CORE 2. COARSE MATERIAL REMOVED 3. PERCENT SAMPLE RECOVERY 20.5 21 J 21 . 021 .5 5 Sheet I of Sheets SOIL C( TVATION SERVICE _ -— - ...o WATERSHED sun-v./Ai ERSHED SITE NO. East Side Green River LOCATION OWNER STATE WA King County LOGGED BY DAT PROJECT: John A. Nilson F1/16/81• wP.o7 WP•OB FP-03 P.L.-46 DRILLING EQUIP EN LOCATION OF HOLES P_1 Channel 6T1 Track Mounted HOLE U SAMPLES STA. & DEPTH S TYPE l 2 HOLE SURFACE FROMI TO - DESCRIPTION OF MATERIALS I FROM TO CSE. REM. REC. N C BIT NO. TYPE MIN. NO. ELEVATION FT. I FT. S USED FT. I FT. % DIAM. t 0 1 BLWt/FT. 402 ,76f5o 0 5.5 Silt, brn. , soft org. - L I S 5 I5.5 2 I 05.5I26.5 Sand, F-M, loose, brn-dk. gry. few P I s. gravels, M-C @ 10 Ft. , few layers of 5.516.0 i 1 3 I F. sds @ 11.0 Ft. , silty sand layers 6.016.5 16 I @ 26.0 Ft. , W.T. @ 8.0 Ft. 10 I10.5 12 • TD-26.5 Ft. 10.5111 .Q I 3 I 11 .d11 .$ 13 - 1---...- -- - • 15 15.5 I - - ------- . • --- I 15.5{ 16 I 6 II 1 -- - — I -- --- —t — — --- ---- - 20.d20.5 3 r.1 121.5 -t--9- --- ---------- 25 125.5 I 4 -25.9.26_0 I.--5 .- --- --------- .- I __ 26 126.5 � 9 2 1. DISTURBED-UNDISTURBED-ROCK CORE 2. COARSE MATERIAL REMOVED 3. PERCENT SAMPLE RECOVERY SHEET OF SHEETS SOIL C_ 1AYON'SERVICE '--------_-_. . _ _ .. --._ - ---------.-- •-• ----------- - - -- •-- .. _ . TSCV J-QI _ WATERSHED East Side Green River SUB-WATERSHED 'SITE rlcl. LOCATION King County OWNER STATE WA LOGGED BY John A. Wilson DATE 1/16/81 PROJECT: X WP•07 WP-08 FP•03 P.L.•46 DRILLING EQUlPM9TTrack Mounted LOCATION OF HOLES P-1 Channel IS O1 HOLE U SAMPLES STA. & DEPTH HOLE SURFACE FROM! TO DESCRIPTION OF MATERIALS S TYPE 1 I 2 3 N C BIT NO. TYPE FROM TO CSE. REM. REC. NO. ELEVATION . FT. I FT. -• I I MIN. ' S USED FT. FT. % DIAM. 0 1 BLOS/FT. 403 %, H37- 015.5 Silt. p_l_astiC_,_-bm. org,_, soft - ._ H _ 1 0 5 5.5 1 1 L. n 5,.5 i12 Silt, non plastic, org. soft --_ L 5.516.0 1 1 1 S 6.06.5 12121.5 Sand, VF, dk gry. F-M , W.T. @*12.5' -- P 1 Loose TD-21 .5 Ft. 10 111 .5 I 1 * W.T. raised to 6.5 in. 1 hr. 15 116. ) I1/2 ___I 16.1116. 5 } 3 20 120.5 20.121 .0 14 404 " L`jFlf{o '- 0 I2.5 ' Silt, non plastic, solft, brn. • - L . 21121 ,5 5 _ M S - Jr.O 2.5 1 8 Silt, v. sdy, F, loose, brn. , strat. L E-{ 5 I 7.5 S E 8 20 Sand, V--M, poorly graded, dk_gry' - - - - - - L I— /) - B 3.514.0 2 - W.T. @ 8.0' Ai Y 4.0I4.5 . 2 - - - - - -- ---- -.. . .----- ----- --- -- -- --- -- -- 4.515.0 �-- 3- - - 1 TD-20.0 Ft . - - - - - - - - - -- - 10.C10.5 3 11 .01 . -_ 1 4 --- - 15 15.5 3 I 15.g16.0 16 • 16.q16.5 112 I I 1 1. DISTURBED-UNDISTURBED-ROCK CORE 2. COARSE MATERIAL REMOVED 3. PERCENT SAMPLE RECOVERY SHEET 3 OF . SHEETS WATERSHED SUB-WATERSHED \SITE NOEast Side Green River I LOCATION OWNER STATE WAKing County LOGGED BY John A. Wilson DATE 1/16/81 PROJECT: WP-07 WP•08 X FP-03 P.L.-46 DRILLING EQUIPMENT LOCATION OF HOLES p-1 Channel D LTra�k A_a m-t.ed HOLE U SAMPLES STA. & DEPTH S TYPE 2 3 1 HOLE SURFACE FROM' TO DESCRIPTION OF MATERIALS N C BIT NO. TYPE FROM TO CSE. REM. REC. NO. ELEVATION FT. I FT. S USED FT. FT. % \ MIN.IMAM. - 0 ... 1. BLWi/FT. 405 (z4-94-5-0 01 12 Silt, brn, soft,org. @_ -15" dk. gry._ L S �'I,'.) p 5 15.5 1 j D 12 IgrS Sand, dk. gry. w/1-2" silt sms. , 1 5. 5 6.0 1 F-M, W.T. @ 15.0' .____ TD- 6.0 6.5 I 1 21.5 Ft. . - --- -_ .—__--� -- 10 111 .5 1 1 15 15.E 1 - 1 15 .1 16 -6 16 16.; I 8 t _ .z0120 ; a 6. - -- -. — _ - 1 7 20.5 21 -- I - . -- _. , 21I21 .5 8 1 -- - - - . . _ .. _ 1 - 1 I -----.— 1 1 — — --! .- -- - . — 1 < 1. DISTURBED-UNDISTURBED-ROCK CORE 2. COARSE MATERIAL REMOVED 3. PERCENT SAMPLE RECOVERY SHEET 4 OF SHEETS SVIL Lc. DAIiVry SLYVIC.E---- WATERSHED SUB-WAIERSHED SIZE NH East Side Green River LOCATION OWNER STATE }vn King County LOGGED BY DATE PROJECT: John A. Wilson 1/19/81 WP•07 WP•08 X FP-03 P.L.•46 DRILLING EQUIPMENT LOCATION OF H E B-61 F-� and P-9 Channel Intercept • HOLE U SAMPLES STA. & DEPTH S TYPE 1 I 2 3 HOLE SURFACE FROMI TO DESCRIPTION OF MATERIALS FROM TO CSE. REM. REC. N C BIT NO. TYPE NO., ELEVATION ..FT... I FT.., . 1 MIN. - . S USED FT. FT_ . %.. DIAM. r 0 I BUVS/FT. 406 ,G-'1-24-0C 01 14 Silt, (Fill material to 3.0 Ft.) L — JZ;C - 3.5 14.0 2 m. firm to 6.0 Ft. , soft, @ 2 Ft. -- 2 — 1 layer of peat @ 12.0 Ft. 4 .014.5 13 14121.S Sand, dk. gry. , m. , pt. sms. @ 20 Ft. P 4.515.0 13 ------ — -- - ------- -- 1 Poorly graded, W.T. @ 3.0 Ft. n'\ I TD-21.5 Ft. - -- - H --- 8.51 11 --I--- — I E 1 ----- 1 111 12 1 I 12112.5 2 • 16, 16. 3 . 4 • 16.4 17 1 5 --- -- 1 1 .c►17. ; 1 9 — --- 200 201 a 1 1 21. -21.5 - -I- 3 - - I I I 1 f I I. DISTURBED-UNDISTURBED-ROCK CORE 2. COARSE MATERIAL REMOVED 3. PERCENT SAMPLE RECOVERY SHEET 5 OF SHEETS ..,. . 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L', r !-" ✓!__ i',K h ,_.✓�'i. .L.: 'v (_ f L • _ -_.�_.. --:: � + : �. - - . � _;;=-• _.,.: �w _ , tT. S. DEPARTMENT OF AC RIC LTi_.'I' URE �:�..- _ .__.._.._..__.�.� -• SOIL CONSERVATION 1�ti IC tr 17 _. _ - -•I ,i ._ __.7__-r-=- j; --- ryi•�--- _ rl ihtigntQ 6/D8 °t^ apR'i w 1 ry - I • 1 Y,. { ,{ 1 � { i - --_-+y ;r', _..__..._ _.. ...___ ......_,. ..:._._t., __-.emL.--2- % j "-1;__ _ , __. J - _ • ,/' / -. .--- . �': - r { • • i- - - -r- • •►i.. --.:_. ' _ x •- -��-�' - - b- i j {, -' ,4. _:'!. - 5--,---•t"+--r-•-•--•_.- _.i'•._ .. .- - ._ ._ - . _ • $het e•t DI ,•1F N.; .7 I - — "----- I�.__. ki P,!v'I r 0 _ , . . . •;:_ •t. •'i Ch.c-ksd r' • b• 4.001110T w•.w n,1'M.rN •M•o_wur - ' 1 .• '. • '.Y'�-,_. _ ... , ... .y - ..A .•,• :w. ✓. • Interstate .Route:.l90 . . • ' Mt. ' Bakery Ridge. Tunnel Bore . • • ' : .Seattle, .Wa:shington • - : DESIGN, S11M ARY REPORT' - r 1 - or • • . • • Washington State Department . • ' . Of Transportation ' Howard .Needles :Tammen & Bergendoff • • : ,�. 'b ,1. c1';• '•4:. 1. �. .•r.,, �� f , y e r� • Shannon. &c. Wilson�, Inc. ' 1 • A • pril 19 8 • is - • rr—r.rr . ` . _.. f-405 EC�� z ITT SECTION z FOR THIS to 9� RLPORT1 3 BE► EVUE 7-\ at .:?- _.-1 {..4:. NIli 1% o <— Z I-5 a D r N EASTGATE w v W. SEATTLEcc N 1 • ---<j . AREA MAP y N > o cKE w mtn a• - - o a o o aSH- ui u) N1- N > Z TON . W a a'• "' _ LJo 3Q = us MY d2 f- QJE1R- O J /�1 a "' T__ _ ___ _ ( _, , :t,,,, PROPOSED ;TUNNEL \\— STUDY AREA I • (.., . 1 1:1 1 :: VICINITY MAP yy , - • • PROPOSED MT.BAKER RIDGE TUNNEL AREA&VICINITY MAPS 1' JUNE 1911 W•3577.17 SHANNON &WILSON.INC. O,its.Anlssl Consultants FIG. 1 1 '1 • • • • • • ' . • SECTION A-A' SECTION B-B' • • • • • SECTION C-C' • • �\• \�{K '�" r i Q sd n :to Ln l I ,}a {'! t / a:11 ` 1 .togr • :i --, ' • IRVING .• •sT. N:••• • •••• tl ". N .. 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P •l. - I111 L _ ll f 1 :-- • • • • '' •'t- --.1 -'::i: :i.*iii:::•:i:i:::-.•tli: :::i::::::••:':::*'.a:i::::::•,:f:*::::ii:r:'i::...:M.....:: :•,;:.v••i:',;•:••••k: ;�:•: y:: 41 Y d s� -:... .{ .: •:• S-:. :,•...... ....... ..:i.:•..:: •:::,•:�.. .• . .Z:• ,�... . ...}.. ...�—L...5•:i:::u: .IsS;i: Qa14 R�. :::f•i t,l8!' ..Ir '•:�Tlibe - tflr • . . :::....... :.1 'ijiiiiii�i tlignntrairiiinl•-Irniiii` yr' " '�rlk l j • ;& -ii�- ''' "i ;57,L tiii •� Ill it���� :r,. ,• +� .,.,., . . l_ - .r... _ L k Pc:. 'i, \ � 06 .' .1 timii opt jogi.,.....:: _.-.. '-4. _... \,7).3! ma E, 9. { • fi¢ II iiiad (' �yI� L� �. !•1•�yy.y!!1 :'.}N 1111,•!l/yly!yy�' 11i�!!11.1!11111111! !!i.,, ..1•. '.'f 111! . y!yy!!1.. . !yp ' ,I u•�1- uti*r: 11 41 KIWI) �I•,g• �'!url.' t,/ • • ::•.: '�C 1 i "c:: . .�... . �•------• 1� ••::S Ef.. .. aslLwaC: c pd� . -1s. a . ... ;. V. . ' .� :. ...... . � .,..:•::. . .. v•.�;??>:;:.,:::::i : � ao><ooao>�f« awNx +•se»<aw F ,'•? �Y[ +� Q;;k< _er• :N. 9�71 ?:`M•,tC%5t'"-RR;If4E 9:%�>RW1f$18 '��A+dX:.:E..�se� _—•L ii iiil 1-" . i,L�Ii�iiiiliii4iiif 1i iiii tifill- isitigr• t •YIYY 1 iiiai Liiii. 111- ,1135rrQ•r :... ii f,•t/,' .1 ?I• •� 1 �� c,,,: ,• fit- r' Irma �.,: ',. ,, .ir /OA Y��IIl-MTITTIIrlem orPTIIRii lfy►argt „1i I .I I ��, •• •ni „„1! ,.0....,,1!fJN4�}i'!, !.!!!... N11,• '.�t •• 1 I !1 OP!!- itilt.gg11H 41, !/•1 j 11y1- rientIMIllanit nn,nv-e,Ti,eTi:"7idn 17P. a�ex r'•�an�iw,T'1L"7n.:vy:l:.:C.. :?.:1:}! .I! .-... ....... .. .. .., ...... ... ...... .... . . ....." .. ... . ::1 ;:;:::;.; y �,.. '+sbi�xlf• g.dL�-•'3 BPl .od8, i uM 111. IIN11 llnnn ;116141 u.• ''iii'�'�-•[ 1' /J�' •,. .111111. %%• i/illl, ik �p 'e'1 �� � �5 • `• aPqy9':i I. N�'`1, -llt `3/• .1 la . ;: Lio.,1 T-16 LEGEND •• NorEs B— Z \S . WASHINGTON STATE DEPARTMENT OF HIGHWAYS BORINGS 1. Basic plan provided by Washington -�MN- DRILLED CIRCA 1936 _ SHANNON & WILSON, INC. BORINGS DRILLED 1965 State Department of Highways, • 0 February, 1969. • WASY.INCTON STATE DEPARTMENT OF HIGHWAYS BORINGS PROPOSED C- IO DRILLED 1971 2. Boring locations provided by MT.BAKER RIDGE TUNNEL • SHANNON & WILSON, INC. BORINGS DRILLED 1971 Washington State Department of Q lQQ 2Q0 3QQ TTSS II N�� SHANNON & WILSON, INC. TEST SHAFTS DRILLED 1971 Highways. BORING LOCATION PLAN E I 3. Logs of borings are.found in SCALE IN FEET 1 JUNI 1N1 wi571.17 SHANNON & WILSON, INC. BORINGS DRILLED 1973 Sf1ANNoNart$ORINC. TH-I — Appendix B. �� • \t� SHANNON & WILSON, INC. BORINGS DRILLED 1980 • FIG.3 's i • Yakima Ave. S. 30th Ave. S. 31st Ave. S. 32nd Ave.. S. 33rd Ave. S. Lake Washington Blvd. S 35th Ave. S. Roadway - Waterbearing SAND Recessional outwash SAND Lakeside Ave. S. '-Advance outwash -Waterbearing near base - � EAST WEST Estimated Profile I �. 300 - of 1940 Slide € . I I -• J' _ yam I -200 0 z 200- I ,.... Vashon Glacial TILL �' .i+:s�: : 14' H < J//T _ _ _ _ Lacustrine Deposits ��_- • _ — 1——I— PI�OPCSED TUNNEL (overridden by Vashon Ice �- PROPOSED TUNNEL I -100 w � — _— .• . .•. . . ; . . �';; ,r{:•.. .� .•�.• ' Lake Washington is :, Older Glacial drift (Possible Salmon Springs) _----`-,_2._- LEGEND NOTES: i - 0 100 200 300 400 0 Recessional SAND 1) ThE STRATIGRAPHIC INFORMATION SHOWN ON ThIS SHEET IS BASED Q Glacial TILL ON OUR INTERPRETATION OF THE INFORMATION FROM THE LOGS OF SCALE IN FEET 0 Vashon Lacustrine Deposits t BORINGS ANL TEST SHAFTS. THE ACTUAL STRATIGRAPHIC CONTACTS FZQ! Older Glacial Drift == "; EHOWN HERE ON MAY BE GRADATIONAL IN NATURE AND MAY VARY 1--i '- +;i BETWEEN BORINGS AND TEST SHAFTS. 2) THE INFORMATION ON THIS SHEET IS INTENDED TO PRCVIDE -. GENERAL GEOLOGIC INFORMATION ONLY. -I SEE FICS. 6 THROUGH %. • 9 AND APPENDIX B FOR MORE DETAILED SUBSURFACE. INFORMATION. :;_ - • r PROPOSED MT. BAKER RIDGE TUNNEL ft . . , . ,„ . GENERALIZED GEOLOGIC PROFILE ALONG PROPOSED TUNNEL ALIGNMENT (LOOKING NORTH) 1 „ . MAY 1981 W-3573-17 • s. SHANNON &WILSON ;; GEOTECNNICAICONSUITANTS ,iw: FIG.4 N -- • • • • • • • • .Isr SECTION A-A' SECTION B-B' • SECTION C-C' EAST E E 300 E E m v, Loose to medium dense brown, silty, fine I• BORING C-102 BORING >I SAND grading to SILT with gravel and 'f • w BORING TH-I <• C-IO!< organics • 10 -- _ • - BORING TH-2A(SFT.NO.) we ?- '42 ♦ •�? ? ?---52 0 < TEST SHAFT N 44 Medlaw co very dense,gravelly, SL/6" ., �� BORING �I 75-2 127- ? • 85 brown to gray,SAND 52/6" <I a, radio [o SILT wl tti cobbles and \T (WF7.NOla o PEST' (7SFT S0) 0 123- 57 grading �3/6" BORING E-I . EAST ACCESS SIT" (60 FT.N0.) 88�1i8- '�, _67/fi' ?— _? ouldersSJ/6" �T n c ACCESS PIT ,C .; _ _ BORING 1'' V '?�33-��_ st lff to hard, gray -__ -___48 ______ -,— 15 TEST SHaF 200 99T, 45 _____ SO F7.N0)_ C-Ii00 8��.,------ _=_7=29 34_•laminated, slickenslded SILT -- ----- --------7----7- ------- ��T-5 �1. ( I BORING SOFt co stiff, ar:.c '.;ILT, SANDI BORING E-2, 8-v57/61I_ -_-_- -� - -28--- - 7�2. -YO -?- --- --70 d CLpY ��J� Very stiff to herd,, grey, massive, ��`? -17 T�? BORING B-9 with o:'A--�_. (SS FT:NO.) - '? O- 47+------- -T-18=--- 22 el tckenalded CLAY.-with th scattered �6 ...PAL/POSED 7UNNta. • ~•18 - S Y 20F 0) BORING BORING .:.... tr 22 27 cobbl ea ravel end oss Lbl boulder 22�— 7�7� j I15-TS C-106 u AOMINc E•B B_S 3�'\ _ +aaaaa31 \�J r RRR�\\tRCCR\RRR_�z7, y) ) • (62F7.5- __43 3�7--L-27 — U� \ \��- -- - .\\\ 120 FT.S0• _ 1] BORING. ial 150 __ __-- 2' --46 7�_- _ - J6. 20- 2 8 a 7 \\\\\\\\\ \\ \\\ \\\\��32 64/6'= L 6+• -I< -�_rJ118 7Q`Z ��:. 0- J6, . -75- 24- 26 ? 30 _- ?:---�_�_—��_a 15" 4l- 12} ?�1�16' (20 FT.SO.) s ; i27 3F :• ...44_ '76�-"----_• ---- _____30-_ JU -__- ? 29 _-___'�—____-__-28 Very stiff to hard, gray, laminated SILT:73 -?�T • 28 79- ?. 19 �I 4 -`_'L ___-- �� : " ::...'::' ____.2l - 39 ___-__-____---__ _3U __: 26--_-- __--_ l00 •`S ; +� ., : + 0--�•7Ur•= _ 29----- .and CLAY with some sllckens Ldes and = - 49-a21 7--62 NOS; • C �21 42 Ld�� - _ `00---=•_ll;r ___-4g_==_:33 -—__--_--___39 '= _--__- _ 9 ____- gravel_ --__---T. t9 41- 4 ?` 2� D0111 _ 6l 34 U107 100 25 _- -Y 6f --_ 6 �+ - •-41 •30-r- -32 --_?. ?-_60/4" __- 7 55/b�_ j- ---_-- u ----- 77 7 ] \ SJ 18l 35 \\\\ \\\\\ \\\\\\\\\\\s60/4.5" \\\ \\\\\ \\\\\\ \mot\��J\\\ 62/6" - Hard brown and ra SILT SAND end CLAY - 68 33- 68- 44 _- _42 __J1 1 75 b" 48-__ --''yr'�'•._? .7,1....I 70, Hacd. Rray, sandy 15U/7._ 55-�_: 50/4.. / . 9 _ _.__.-49 57 -- .. .. .1�= � or c 188- -tx 54/6'L'•'•+T-f.ugiCr:::)e:ii{::.:s:v• ?� .....:.:-.-.--.. 77/9i clayey S 237/11': -_ .. .... ....:::32/b,� •.. .... `lU 7r,TS7 —_ 0 155- .T. --�.-.- o ,,7777,8 50', 1661T 5 /6 SO SILT 81 ......:•:....•.. ... 9U.... ;•.:.M :i::.•.:':.:.: 94[g.,.�T•yy •lU7/lU". • :::• •:.•. •• . .IC _ ;'Y PROP TUNNEL Very dense, brown togray, silty, fine SAND .:•.� B/fi'-;;:.; .eT•• .:.Q., ., • .. re It • • • 155/9 101/9_ 6.188 �,14 OSED 4 1,4 48-• 1•nrY P e 8 i y clean,.fine ,•1�OS�yn de a raw 'is-to e n SAND- 1 •T::••:::•. _ 0 PROFILE ALONG OF PROPOSED TUNNEL • NOTES 0 50 100 150 200 THE STRATIGUMwnC INFORMATION SWAM ON Tau SUTB!IS RASED LEGEND ON OUR INTERPRETATION OF TTe INFORMATION!RCM rat LOGS OF PROPOSED WRINGS MO TEST'MASTS. THE ACTUAL STRATICaAMIC CONTACTS ' WNW M ACON NAY AC GRADATIONAL IN MATURE AND MAY PRAT BLOW COUNT PER FOOT 17-1 ? - . SCALE IN FEET UT.BARER RIDGE TUNNEL BCTIEEl1 WRINGS AND TEST WAFTS. • FOR 140 LB.;HARMER 15 4 MEASURED ' LONGITUDINAL SUBSURFACE PROFILE DROPPED 30 iN. WATER LEVEL APPRO%INATE CONTACT - ALONG It OF PROPOSED TUNNEL wu TM LEVELS u ,TM iEvc NOTED ON THIS METAuu To27 QUERIED WHERE EX TR APOLATED READINGS AND OBSERVATIONS DURING ANDEA PORTLY AR[l DRILLING OR NOT OBSERVED IN BORING. JUNI IOC i11Raa0MBNSilOY MC 114I77.17 AND ARE BELIEVED TO BE AT OA NMI SEASONAL MAXIMUMS. ACTUAL CONTACTS MAY BE • 41••••••11ft!MEM. GRADATIONAL IN NATURE. • • fla/ . � N +. +�y N+. • 1•5 .,r. 3: ... .Y..•;••. ' ky � 4.L ni • :Fb . Y.. f `Ya. 5 j1 ' y .a • .a. 2;` sti' . .•. � >. : �3 � ,� :''°.�•N '.,,y�L�. . i*s2:Aw ,aG t . A.o- :., r:^t .... . F •E MOD DATA 1.D0•Ar art D•u -- - -..•t.c D•T•- -----�'---- ..••c�._ar• q/ r`u•Yot PC `o AT Ow T[ST Y•lAA S7�CK•�.••,' "'S fTM']AAo DC w[TAAT ION Tiff - lr.U4 ST D[Mf."[w,tsl E.; f n �. .- t - .1 e 101. 0( ePTION 6 - !x D[]CAIDT.ON • e.o�.n•o';•.G!.e 4nr,SO.OV - -_ . - r bto.•vlaa:l.o•.tgnl,zowoN w� z .2.'A • ..moo�c+•t,- ��jj wpT[q CVNT[wl,•L 13 Est, Elev. 171 ft 0►3 to •o bo :o so e3 st.Elegy. 161 ft or •_ •I0 " t ` . ' 1 s• • la. C•oyty I \ • 5 .T .•c.;s• D i I D•,tt two.. I I r. ! uay•y ]IlT 2VA • I • 'u I - \', � -_.4 - 1. : ,t b I _; i L I •• I I ,, j • 211P I I • r St.t1 n.r.y 1 21/v I / I .8-1 .......�. IO' y; 1 .. I _._• .. rt. Cnyey :t.7 u • i( I i &ht.., , .T IX 31 ! r i I �. 1 2. Qi _ 1 Hjv ' 37 D i •1 • 4-- S -4-__ - • y I I - �- Z >DI • •• 1 1 G1]� >D • .• I • •• I 1 I •I I t _ csI • I- er.lr To r•.y r =� I I • •OI 't s•.21 ray 2. i..l Gl•Y./ C. rw e.r I zz • /� j1� �� • ! I • •-.--..,92 » . . • / • I• I G v �f �• .. •I 1 r I • fy-.- 2' 1 i • ;1, y• y •�P • = 7 I • • CN S�Ity G SAY „ � j` • • ! 1 rJD,.•• T I ' • „ I • ,pt I 1 i • �, - - svTD t i 1 [ , • 1 • 7D • • I I 7 x I • • / 1 ! I 6.5 fr S • 1 _ 1 bo Dot to..o/t)•r••q i i °I I. •, i ' I 51- / S/6S 1j 1 5. • !0 1 I x 10o TTo••o•15w,q 1 I i I • 1 1 I • I - ' 1 , 110 I ! j I j I I j 1 ---.—.2 I no 1 I I 1 • ' i 1 I I I I 1 I I 1 , . 1 2aI LEGENC 4.EGEND aa•r. 1_ 0 V^CMI eC tv./tU•T 11\I O 'J'CO-K •^C•� T : 2':0 48I.1•poo. ow.",", O V••rv/.•.1 tm.prt••m•A•I o V•.Cor+sPLaotta w•.•.••t0 •: WO spew •s•p4r•40 1. :r-t•r.. :4 •.• r. • CoMO•OD'T 11•• T•.•I.0 CO•.Prt•\.O••tt A• I :•.:. 3M Dy .a••D•• C [M•Noo••••• •t•• 0 I :1•:0 )r••ley •+-D• • Co-,a•fm•47 .. .3 A n1•ti• • % Sn—•••• yNO 'Anoa••q -'• • CD••SO'00./0...•C•o.••td t Seyov a.•••.a C-t-i.,0... .^ .o-v r.• •.•• )a•+tw •.•I •eme•Ie o.a..�.• t•.O.•o•Conpr.•G•C•••R•T • S+,ar •e• ••m.•ro - wr_ .•ct•ro,,.r... u - . .v•• 't•t• -►t'< •�' M' 6••.[w N.DGL TU8111.L] - - >r- 3 ?.• ='.�1: D•C �.t;;:. t v Gs 82. cl_.•, s:Y 0' F'EtD AND LABS RA?�•��' BOp' g-2 + t . 9,;•�MAQY OF ;IE:D AND IABORATORN. DATA BORING B-1 II • I I 1• ',CO) DaT• LAS0 ATOTT DATA i1 1 ^ FIELD Barb l.>t•Oa.TORV DATA • i T o.a0 •cNCTG•T.7• TC7, L �'•U■ STK�Tw.r Tl is i c ]•(A ST a[KTY,1 a1—, • '• ,• 2 • y' R•waI.AO 'pa 7aaT1DM T[S7 Sty OISCRIDTIpe< = Ira.rvroor;re0e R nr,TC'so.l _ %A- DCSCa.PTIDN i i' ► p 2 • A. 9 M•Ta (DNTCNT, X : Ibre/fop(.•O tf.Rry*•Y•roN %Ana CD•,TCNT••Y • z :Tst. E1ev. 151 I A 11D zo .= G= .- ¢ 77 .c 60 3.Est, Elev. 127 A Vo :To •o 40 p 70 ep .y S.n, y i I y di 1 1 ..n,.1.y son re!..ea--., 1 _ • — __ IO 1 I I O� V r--,- • 2: I f I • c I 21 I • • I / I W \f W• I ' '^- ` s— 1 f .' z ,I I • I • i .. 54.4,to III 31 ` • • • 5r.rr,o - I • j ... "e.0.9•ay,,Ty z \ I ... .. II 1 { 'i •.: ya.3•ay a.11( 1 jID I 1• ;;•r Wf•.w ,11p 1). . 1 .AY.n.w I )oI I \ Pa•I.•$I Y lei f I i i 1 ,. I ! 1 .aI 1 \ p' 1 S . \ i'' \ LP \\I I 1 //ANA SIIP I \ •r •— •1 II'I I 1) a GI —U• • I i I ML y.•y clayey SILT S• / I N ulpoe•a•I I II P I • 1 I a q• ayP ', II M'-_'�I u awa( o-al • 51.1,fa •D. t i I I IOI b•C.ray 1 I I 1 • I 7 Z I —.� • .L. c•yey SILT I • ... ,..I•I'po.n.,qa 1fr p ! 1 l SII bWt • ' _ dd TO. Poo. S..•w, �I i • i 1 pollen.of•••,..1 T•ITDI 1 • • 1 • �I bE I Idi 1 x I 1 . I I 1 — I ao, I — -T ow i 1 —y I . . . . 1 I i i - I , MI I • I,0 i - I I 1 1 ! ' I I I I i I I _• ; Lam_ f .301 1 0.0. i ! -n LIG[ND I.CGCND 0 : 1-:0 •..'.9... ...•c4 0 V..<a..•.r.•0 oo•••••••r.•el, a '.....cc.a]I Gore 0 ur.a•o.wa0 1 1"CD •p<.I sews r.pl• 0 ;3.c...rr.•a 00.•1•ea•r.tow o LP•c o., ol.Oar.•Nn4•••wa• • 1 :CC 0 S.•'•y .•••pl• C Co.•.o••o•,on r..r a.co�P•.••.on It)* I 211'0D S•.IbI •o•.pl• C C.n.ador.0. rn, •..•Lol coa•p•aiL•w gaff co a •.r n•• a..•`•• An.••.•c •.-•.. • Co•••o,op...,,,,,,o,wa0 • so•d•• pva•W •w..•e.q Iw.4 . . •--- -• •----a %--�"i-'d ...I• ,..J. o .0-J•rla,on r.•J • •.o.. ,rw, C�L.:Ja I.�.r ` r cv-r•.., )o+,py tir ..^a..•e• b;✓o1.b.Ir<p.N., tip., ' !u<a a OGe .'�+ M, e•YCa w OG1 T,;.w[LS \ TJ - ... • D.0 ' ,') ] G].•I, .may ... ,a.. •,..ca u.n , .w, c,n,r,Ia. ,ten,r, w't a, •.'. Y-'1 `•---• ••� n. ,-..NTgY 0' t,CL0 4N» LA600 A TOP.'.DATA BOOING B-7 ++-a�.• ve D7 `n !• qy. Mwp4 C Carle.•p1.•n 1001 •nett f.e0. 1 C•OD spiel • P.sM• Ag•• D•e•f Lan ffN �" t�•'Dl• O .!•.e:w.M1n•• Coop/Never lee. O l►'•C On]O 1.op1••" - e• l'sN 'pnf•1 • •00/••unimun I +�•OD SMI•y MwpN ,• C Cootionfol • •�• ••(Uf••• r-�l•N••40A:,•.., •• nor•Ip. I•Me.•l e•••Mf• A71 ...• \_ trot..2.•�wi.•••••••! . .'/.i:,...1" ...Cf.."'••••w hl••:• a S•w1Y01.N•IW •went•• ..+.• - - ,• _ .,r� • •.•• •...i••.�. •.. w-�-.even.•r• .�..._. .....,;r'^...•id"];.Iw;" i • FIELD OaTA LABORATORY DATA gib ' FIELD DATA LABORATORY DATA 1. 0 — SHEAR STIEN°TN,?S! • iTANOAR0 PENETRATION TEST n SN(AR 571KNGTN,rfl • y =I ST►NDAID PENETRATION TEST f I- a • III .... SOIL DESCRIPTION i I • ? 1-__ G� BOIL O[SCRtoTION : P ff B!o.•vroor(1.010 L. n1,SO•MO►1 0 BIO.I•/f0e1(1{D I••R.g11 t,]0•/tpp en WATER CONTENT, :{ 'g „I Ms7CR CONT[Nl, A g 1 Est.Elev. 262 ft♦ op 20 40 6a I° 29 40 6C S ii Est. Elev. 264 ft a t10 ao AC •20 _° 20 40 60 • ,Dp �` I. • 1p T.,. 0101 . - ` . Ie • V••.w••••• er 1 --`• • Me•••m Senaa e• I 1 S.• . •••r 1•• •r•.w / SM ].1ry sent 9 IT9`y n •�I•: •a••D Z D P. S•ND •o/gavel b • • vJ • sI . 14_ •• / 6_ 1 • +I / - • ,9• 1 '\ • • `` s7' a1i I •• 3n' 419 % 0 P----1 _ I • • 22 ' i • 90.1f tell.•s'.1f •40 4 P•0 I • 1----/ sI ' • za I } ■ 9•ay C laye y • 0,....). M L 25� • • SILT a•.In.n I 26. 1 1 /l/JB/6 • ]•11 port.ng� pP \ • I--I 1 sl rI l0 2fly' 0 ' I � ' /•/l6Gf • So' S H no.9,9•oy Clayey 2S p ' I 1 1 50 1 ( 'MM SnIT LI In.n 29y 61 • 5•19 Darl•ngs Soy I • P... ; 1 2e, I • • 66' 22I • • • flip • ' . • (l ! 1- • 1 j 591 so y //// 1 1 9 • • 70 i TAD 1•I rl/3CK3f I ' I 14,..▪ I lc • I 42- 1 • • • Bile I I • 6er •• l i • eo I . • •eO I I r 1 • • ,e 9I •5' • \ e•: • I • 1 • • S L P \ .- I • 1 a9JJJJ�.,,,,,,,, •J ' I Si AEC, / 5. G..A.e W tong I 51.11t• �'1T• IP DI • I • CH w0.0.vol]eery 54 I • 11 ^_LAru'In•n 57+ 1 J s.I pa.rnngs ]e •..... nIp \\ 1 • 4c I • 4: • n0 t " 00 1 ,o 12 X4. 62 I ` 51 Z.'".. .1.7 . 451 IIsIlP // I• 6i ' 'Of a 115° J 11 p .• rI.I • ,, • IL..'"( NgD •', • (•3 ' u 7b: • e. • i :40 A a 1. 14P0 I 0 m rT O 'SI • Ten . 79, W ( T Z el. . z Islip i - 4 Z el • R ISO ` I e• 15o • \• 9T I. P N IiI , • e 2 .�.M/Ii/�•f • e.I • , . . ' ,1•T160 f. . ( es 4 lcflP / 1• 62 e+ • _ .. , , I en_ `1 • ..:4•� `\� • lT •.�_ ` • • 1 9`- •1 « 67 9•- •-„�..- N\ I • 9""'•170 ' -- ITZ' 72- s•• r9r • ' M I } • 'N- I • • / 14. SI.I110 9.- I ..... 0 • .•➢P / I ► 1 97 -- I1 _ l9.]. / ! ML 741•0, rW.Icwyey ee.2+La0I _•s1 1 -1 f •..(! .• 1 ..T limn. 9f(• v •� ML 1 .0.0.'(•ay Cl••ley NI • IOU ]e.t Darr toga 99+ O. • }ILT W Iw.w I p pee.yravel 0°+}1 I • I. 5.n po.e.wgS • .o2I,, I • _ LLLL D � — 1 } AIi90---'-- ��___- Bottom Doan I 00 L••' •/I/JO/if �: L.__. porl•wl • of Bonng g • LEGEND LEGEND 1 1 0D fpl.l spoon tamps, U Uwconf.n•• CO'Spfesnew test • unc•n901 0a1•0 un••a•ne0 I 2 0D ap11I spoon lamp.• C Unconf.n•0 temp on 91sl 0 u-•••+n 01.-1 Jen,•ne0' ti OS SM1•y 9•mp• C Censo.aoa•g /401 •••anal Comp7•9]•on 1•07. I Zp OD Shelby sample C Consolao!•on Les/ .. • ^]••-r ^s• • 5•••r•• Panned AN•.Oetg linos • Eaw9O1n001l0+w0.0•M8 D Sampler gushed AH••Oe rq Inm.ry A ]'f Ogrr•O .l M•7 ^'7 " • lqu.0 I0.•.1 \r•••••I CO,P•e]9.On 1a9T �-�NO90' I•wnl !r 1. 2• C:••PtC 55-le.re!.' • • S•1•W wee••cAer•A �• •� • Sample rot reconNeO NOfu•01•9I1r co'," . N•lyrel*•h•content • M•••• le.e• `'•hest4 111.1 MT. BAMEA RIDGE TUNNELS . Wat•I level `-- 490511c ..met Mr t],]n!H 4.;i nk I JNhE.'2 • DISC.IS,99CS w-65•$21 .. • D•.0 S, 'i 6.. Gs •c (,, SUMMARY OF FIELD ,AND LABORATORY DATA BORING B-4 •wanne a Woo. SUMMARY OF FIELD AND LABORATORY DATA BORING D-5 awl"••"• "•'1O'• • • • • • I FIELD DATA LADORATORY DATA g§ nll0 DATA LABORATORY DATA _ -- SMEAR !TRENGTN,tfl —� o t STANDARD PENETRATION TM ► SHEAR STR[NGTN,Est g STANDARD oo p(N[TRAT ON TEST ~ 2 4 6 ,a,, 9101L O[SCRIDTION i• VATCR CONTENT, 'A .r SOIL 0[SCt11DT10H i S Alo..vroal(140%weight,70•e dt Blo..s/loel p401e.eight,>D O.o►7 .^ rapt u Q WATER CONTENT, :t AC tt 3? Est• Elev. 206 ft 0 20 40 so 0 20 40 60 7y Est. Elev. 262 f A it' to 40 10 - t� I I Mea.+tw arise . 1 I I ' CL gr•.•..y CLAY • 1I _ .. 10• Il 10 / -- 21 101 • 2I / I N $tin r•.et, / 0 • !-1 w.ed..•.to sense 2 gP AIL St.It t!ay•y 2IP / Sin o.oyw e.lry Ewa Y _. 1 511.1 .r.win 20 ._.--1-- J— , SAND..rg•a.•1 201 e0 matt e.1r Da...wgf SI / • 7I •—.•• • 7 -- 41 I \ I I ' 4I 134. -'' \ '� 7B• sI • .IP \ �` - 40� Ao 51 I 1 1• na•a,�raycloyay 4I9 / I MH SILT •/thin 1 / i I un Dartingf SIP / 1 1----1 --�l 71.rtt. SE GN Amy e • SIP I So' 501 —�— •.ny uAy.r 6I l • GI I < • t A,n s11t pert.•gs ` ` 6Ip • \\ I • TA. 6IP 21. 1 ao . • ,I7Ip •I TI° _ ----170 62 eII /1 • 611 1 )I-tr, SIp ... I. / I ! eyc I 1 ffIIf // BO 1• Cr 91 el pl I 1. I I. 91 } I I j • i ✓ I / I 1 . W 9$P I I // I• 1 sap I I I I 1 6S� • i 90 / 90t- t st.lr t• I { • 10 k • • PAL twte,grey tlayey I t0 1 . .1H 11LT ..l.09 \ 1 i s.1r pa•I.ngs \ •F -1 71.t1 to I I_ 63 . 10IP na.a,9•Wy�.1ty 10IP 1-1 _-._..—. 100 ------�--'- — I CH CLAY Io.1 100�--'--- III Nt • e.1t pot1.nge II 1 1 I • I �` 5 I nnp •1 •I I II Ip 1 . u0 t 110 11 11 I 1 I • Il�r A.A[vrl IZ . ��.._rz / 12IP I ► I I 12IP , ,/ 1 ` 1• G2 Allern•l.wg layers of 1E0 I j 1E0 SM •ens•S.Ity l.n• r SANDS nerd IjI • 1eI I PAL I Cley•y SILT I . Ti 130I 13 I ISIV P I - I 1 [ 170 1 1 . 9D ` 1 LEGEND I_5, 0tlow.or Dor.n9 IA Thee _. I 14I / r . I 2-o D spiel spoon S0mpll 0 Unconlm•d compteUlon lost o Unconsolidated undro.neO al R / • I 24.OD Se•lby sample C Ceesolelot.on Het tna■.alCompress,oetest ... G 14IP - T1' . P Sampler yMd AN•reerq Whits A Con•ol,dat•d undrolned 140 --/ - - • Som • .C-• LtgUW h.n11 rr,9a,el compression Pelt W ID ( • p4 •rot rec0 411d `��1 voter t eth/et r I O. Wolof leis \---Pirate lend MT.SANER RIDGE TUNNELS z \I Dec.tS 19GD W-e3•B21 r t5 SUMMARY OF FIELD AND LABORATORY DATA BORING B-6 Sn°•°^• Mi1a0n I IDfl eo• . �1 —�- 16I ►. • - 16IP 1 ( . 1 I I 160 - - -- - —1— 17IP 1 • 1 1To' 170 - -- - IS - , I . . Stitt to hard 16 I P ' Fe—•- ----1s I 1 ML gray c.•yey / SILT.rr rn,n 160 -_... . _.. .,..__ . 1'tN silt porl.ngs 19I 190r • — r � MI1904 . DoNomof Dor,ng I ITI I I I LEGEND ••• ,•. •- . I 2 0D spiel spoon sample 0 Unconr.n•d compression tart a Co.so...a re• u •. ..•o TI I 2,00 snelay ramps C Conrp,donon tool Ir.o..01 comp••1S.0o toot Y/ P Sampler WSnod Anortetq binds . • Sample not reco•ered [-'-•L.qu�a I.m,l COT ... Moshe1 wales COntenT 2 Water level \---Moshe 1,m,1 MT BAKER R!D..E TUNNELS I Dec lo. 's LS .• cs •.! 4 SUMMARY OF FIELD AND LABORATORY DATA BORING B-25 "•— I • 41 o:u�i v,:q✓: ..,y:, �.'Fla 'hc+.*�ci'.S' /`+;A?f ~.--u '? a'D:7•.` tY+rt:,Y•�,3.`.'`:•' .. .. '%7":.., .. -i. #,•u. 1 _ :• II[LD O•T• U•0••]pRT DwT• / _ r[�o N.• —• frUll 1114.01.4.']r-- 1� IntAi ]ti[K'`. 1 • • C fr.-moan' •CHCTRATIOM TLJT nI ,^, f•.r•Wp0 Rn[t••:or tf]t ••�•• •• Yw •Ol pcetll PTgN •y„•�rp•I(NO 4.,n t•b� n : °----- ` s7. DLXRIOTIOH _ ._— - _ _ _ : MTL• C0W Cnt,4. =•'J3 ai ..e.•.^oo11.•0S�9w1•]p'.�) . T[G—A�rI:.•a . Sdtat. Elev. 150 ft3 20 •9 '9 0 So GG gcrst•E1ev, 157 fCA♦ �D 20 •e 17 • I • II i 1 • 11 • I P ne 1 S•.I!h.v• i 1 • •• Mea.uw to e•n 1., L pp __ • __ NIL •••.1f,•••,C.oyy 5 b ;• • Dorn,wily Sy I ]LT r•►••.•rs v i •' ' S.• I r.ne to Go.rs. ZI •��._ I • •r s•f•y s••1 2 • P SANG w'9•owl — _ 1 I • • ZIIPPO • s 110 20 I i26 11 1• i ,I —. • I= ,�J1I . 15 3 P n __/!_i =\•• } ,IIp • --:•71 y m I >o I11 P i• •I ' I O 1. 1 _ •' •• 1 1 •IIP 1 1 1 • O tI .O 1P 1 • • �o • Z c I ]o i c P • I biP 1 m `�. •!+ eo CO >: I Ite TI r • ] 1'� TI• i aTr1 1 %�1p . 1--1 7IIP / I • • yT1YYYY A • • .— d.5 r . A —' ,. , • „L; hard.9.•y cl•yy sI . • • • c • . • ;• SILT pil., f •• s.I. a•r,n s /� • i rc.y••.w Dr..1• • EZ' • •• !� vl /I i • Nam' Sr• AIN,f••• .A i • PIP i I ;i : i e:' el 1 •• •T • 'h y Hose WormpIID I 1 514 M••..of e...w• r i rs, ,,t y SAND.,9••r.l qI I e_1'• i • I • V '{ aIIP I • _} i Deno.•et Do•..9 • i ! { _ — 100 I I 100 , I • i • I i Ib _ 1 I MD ! • - I[0, 1 I 1 1 110 ' 1. • � l i 1 t301 1 LEGEND LEGEND T.1 I•: so....oI.....-•.• . ... q trn4onrw•e cm",Haan NM • V+ep.so..e4••11.•0ro.440 .. I T'OD art worm rr•p•• C V•to••.••• m.r:mor.1.•1 • Conae�eo•.0 w0.0•nc0 s • I �10: S••Isy ••••p•• C Cen.odornln 1.•T r•.••.a CO.p••ss.on T•]T" r r• Co—P•e]s•o•'r I 2P.0 D y.1e4 r_p1. c o^.poo+o •..• p Sw cored •nrr•• rot. • Canso'•o••C.•e•o..•0 P Scapie• p„sr..e •n••a•9 l..," •r• ••com••e �L4.I.e I.w.T .r.•. ••c:�p•.ss.on test �f0•C �.. /� 1a.••• nar rf fp...rfE r•I••ue•.pr.r rs••'f^• yr • ot•c.,•.O1tr a•Nw1 �_ ...I D••C•.,CLt •.• +1_S Dec• - wa'r �M� `-/YPt Lw.t rT . 5. ' AiDGG Tu,.•z Ina•• 1rK� Me. �. ..s el C71 f:;uy.R" DF FIELD A.i! LABORATORY D.-TA BORING f—B" Worms.II `rm.. SUMMARY Of FIELD AND LABORATORY DATA BORING E-9 ]' • • SOIL DESCRIPTION FIELD DATA LABORATORt/OATH R?"ry'. F-STANDARD PENETRATION,TEST Dllile %WATER CONTENT vs 11.0 10 repro,30'dr00) °�= 1ISIS u SiodOCO EleV0110n: III 4 feet 1 11 i SC o J4 70 bra. 11t Seer 71 41 . $11■1..silly , file SINS to line 1 seal( SILT. Lie'., NI 'salmi's I I /S • • 111 4 I Sedum I , bees to AU•r. SILL 7 I II" - i • I.lI :line send lllll01s el 10 71' lees kill lsel.l r 4I • • III 4 :11 J leer stiff, lr q. silt( CIIT. , I 7e CS I 1.+....IN I smiled I al l led .1,1IT • 3122,1 011111(1 I "ask (Iue. silty Clq 10:r •.,. • Sliding It 1• le 21• II • • '-,. Ilee heti umttI•— . 71•00' II : 'f�:!.'.{ • ' .131 4 -S'm )1 III )I •.. Pup still. S M. silty C7AI, .11/l1e 11• `r , ' - ll- I slitte.lidea, e: III Ills 121 ` � yam• 1 131 ' 11 •• III 11 • • Ce Id/ 71 - 1 I i. till • is' 4 l. Yell s1111 1. Selo, Sul. sl llr 1..... Ill 1q__-__ - - ' Cll1 I clam SIT1. Lasses.•,•, "-- T.11lcel louts 1 nest lr s.rl'.mt.l silt esfllep , 11I • ,• I•.. III 11 _-_ __--__ -, ' a1.lt. _err- - { Ipnl' 1 )•'I+ III • /. __ILL_ )•6 III 21I TIC______-_.- - • ---- ss1L■ el Ants„ (111.1 1■•1) ' • Cesplstel 4/1/11 s NO US; I 111INS C-111 CIS 1111111 IT III, 111111 I • --I. A IIIC( ROCS ■IS 1NCOYN -'-------- -- - AT A DLITN 01 41 FUT. TN( 101111 III 10111 1I 1111 tIITN O1 011CIlhl ISCITION. , • 3 111T0,11l IRIIIIMl III INS ----- ---- - -� tots 11101 N WIN Of )1 Ills 10 (1Il1IN11 SWARD lOYI(7I11 4I III N011 I (still TI.Nt,111. 01 CITtisit. _ . a N0 CO.OIAN NC" TUTS VIII —^-_— --- • /111011l' Is !NIS DOMINO. • ' GEIERAI, NOT( Tilt SIIllIfICAIiOM LIMES ON TNlS! 101111 100S 1— 111Nt1lMT III Al►R0111A1( 10YN0A111S It lit(■ • I'll T1111. • TN! IIIISITIIN SAT. I, • i LEGEND • co.' c01!.d:Noli.nt«I (1-ig.ls) PROPOSED I r 00 split woes sampler 0 Trieste!"vials leek lel(/y in . a )'O.0lhis•roll IsHsample Cr Unc..tln.d C.m.p.S.iers les%is, MT BAKER RIDGE TUNNEL P Sem"enorecovered c C ptfeel Table 3) LOG OF BORING C- 100 , -`'• 3. Water level GS Gram w.only., (F I g 1)) Att.r berg neele: Pig Poling OCTOBER,1971 W 1984-01 . C-•,--Llauid limit Slurs sl@4seia.. . ---Na?a101otContont ii, Bead mg SHANNON & WILSON \` r stet --Plastic laud ODsM Taiion ..1SOIL MI CNAHICS• FOUNDATION cI.c.Hu•• Y ..,'Ir.I I r s n• -_Ps r�-.old I•raaa.r - - FIG. B-6 Y OATA FIELD DATA LABORATORY DATA I z T R CONTENT SOIL DESCRIPTION i u 2a L' STANOARO PENETRATION TESTI tt 4j1 Y.WATER WWI ENT g ii/o Io.o0nt,5o'a,op) I I s 1 t - u m.r A Blows per Inot -- g W SurfelC•VIVI:1llon:717 7 1411 a r 20 ---2,ti---42-- a— - ---.---t o._ ', arms flit arm flit • 1rion, silt', greretlt .Y' • I ' fl T f..0 1 1 lair)•JI 3L- CS . 11 • i I (1- • • 7 . 111 2_ II s' • Ient1. Of on. soils. glossily SCNO I ) 1 I f0 _ ._ - • fn r still to biro baby I Cirri Orly. 5 I l . is..nate0 sills Cl DI I suns, lilt .lull 1 u-1 4 I— • Darting& I tl,can&t..s l.sa,ng II 1nmm.. .. , • --_ —_ 7�� 1II1 7T. • - a- ' ID. to ID. era. nsrrl.nt.l - t • 0 .3 0 •� pl 1 !0. 7111 11 Cyr .4' 1 1 I Or.O 51 • • 20.d • • ta+o- 1Z �g / _ -- 11114 / • • . 11e III !o — _^ .5. Slicks 11 4.1 17 •.• CS N shin Send " 12111 S • r • ,_Ill 2.,_ 0I ltnit 51 • orrn still Is ''.r0, light I perk gup.• .—,—_L — Ill Ire_—��-------•—Q ! u - • fr1,1 C&Al.f{enetallf atli.ere tcaulel • n sin.. grail,sl,canitee1 1 •Cc.st.nil & r C■ IS\ C i t r-� a sill outings IeII1 �\ 1 • \• • • III lc \* ,—_.._-.___.•-_ _ i •. 11111 - S S—_- 1 II • • 45• lists i ,I sr1I peelings III s0 .4. _ - —'0 !.1 -._ ---- .. • • 10' // 17 - 1 Csnisl .113 7 - ---- ----- I S ••- L n ---I ` sett still II ears, Irghl I dark gray 20 f I ill tills C1.7 1 c Unat Sllt unn led .: /40" 1 all putingt. tl,CIinuln I relltc.l Slick. III _ l.inli. I..otn1 ..pl.itntltt eartlonul Solt~ lg. �1 a.r llnls 0� s.71 •.". -� 12IIp 1 1 . •�L ►� 1 1 • 711L11 1 71I Ill - 4 —_- pllU■{t 1 2/1[P 1 I r 1.5 I i tip.--511 1 2 C► t • 71 j 111 -n-- 4 •—_ ... - — \ • C• aril-.r i. .11..1f1111 �� ;ti n 1_ n P o.s.s0 �1, Malt. Clght Olaf• Sll) .:thin 1 f N CI1 • • ultt cu)..!tn. pulrnp 1 ill ins 71 1 130 �iiS • ,•11 7,_.. 131.1111 • toll.■ .1 1st1.1 1171 I tin);4 Cs.pl.11I 3/22/71 :1.r , v� k GENERAL NOTE 10l 11II1111CAtION 111111 ON IM[S[ 00111111 100S . Il/Il oll1 TOIL if►A0l1I11l 10U30ISII1 1[11[[■ 111. • SOII 11P11. M01(015. TN! TIINSITIIS NAT. IN (OCT. II i110UA1. • LEGEND co.! Con.aldoltwtl:.l trig 151 • PROPOSED • TUNNEL.; • I .>•0.0 spill spoon sampler 0 Trl•plel arks I..I III l Fig 111 MT BAKER RIDGE TUNNEL • II E. 7.0.0 INn••oil tubs.ompl• Ou Unconlinaa Comprn.ltm rat,Id 17 C-1 P. Sample Pu.Md S Slake 1..1(Table S) • Sampl•nag',•care/., C Crap feet(Fig.II), LOG OF BORING C-101 r 1." ._tl_ Walar • IaN GS Groin sire onalyal!.(Fis IS) • Ailsrtarp limn.: Pi/ Parting OCTOBER,1971 W 1984-01 ....• ton �..,%` lwui,limit Slat Slictsnsi n • S)�ANNON & WILSON ,y • - Nolrral wow content iII I./ding NICIIaNKi•I nuNllnl,oN fNGINrs.. 'S • \ —Plosllc limit OD Ilan ',•all souk -1G. B-.6. ..-- - !.r1 f•ocon.cn °=1::,..r.....PII...... ... Pnsrm t,t,,,erMniter ..... ,.. .. —. �.....- .. F I G.+B-7 _ z - FIELD DATA ' .. • LABORATORY DATA • 4 SOIL DESCRIPTION — . f STANDARD PENETRATION TEST VA irs um, �,WATFR CONTENT lI4010 wo.11d.1(1'Mpp) •Ittls , usy. i slaws(WIN!NI � 7e.', Surface ElintoNon: 711 1 lost . ,I IP__.._.-L1 . ._ t� 1L --- 7s1a 1sus'. Iisia 1 c111i1 lIlltt end .. .•-- 7 1 • dents It very ten►o°glop. slightly I I • {Illy. lino to Stelsl SAND is, • II tune sand 1 fine { • II II f! • I_ , ' 111111( holes II lee( •'---.---_— • l • 7I t•� • . I I 1s • . • 771 I.. --. ---�.__._.-. 311.1 fI �- •. Poly lisp. elllt. 114e to a Silo e/1_eyen of clomp Isis U - te iodise Sept (11111 I I 11 Il.2• • -- ___, _ - • 11/1 III 3 ` 11 I= .-. • • , WI. I11h1 t IItL (lei. clgH fill ,:ne,s:. ' l silly 1141.(1 u. !e/sl lelenntn f1 f. -. .__ ^`!,i: 1 light tlal. till postings ■I 71• III ' $F..---•.-••-_._-.. _. _..- 4;'S� as • III i '`s • ,11. CM-M , III 1 : l — 145P 71---.-1.------- ..__ '-_ . �_�._ •r', IP III • 111 7. IS V11 COMM1--••CM h stillto Ln d, Ilitt IIdark SIP IS Ij Gs 1.1 -1 as gray. $uIt- sully CUP,(I Ui 00000 to I utslre)•:nusress Ili lees light grN. tilt porllo(e 17 I Jp • . Seddon, srtreo. I• to 1/• loom I het17entel eleallltel de late I • ' tcsl tetee tent 1 (level • tuespesl —(. 11][7 I/ t --�-----• lilt 1 Pelting, III I • e. I -1s 1.4 •• . -II' se lir - ten____._ -.1-__-------- ---•'--- -- sill I fells-s r 1 • 11 I T r I IIr _; -co I - 77 ` III 1 A. 2.2 ' 72 I ! is • in I 17 . 71 Hr : 171 I -__,S III _-�--- 21J1t — I • 1 • • !1I • 1 27 fl U1. I 1 I—A • tM• t { 1= 211 T • IS/ 2 1l -171 3 • 'us, still Is Nut. light I dos\ 7IIIp in ` -1 7.7 __1____ / 'us, -+ glsr. clsisp slit I sully CIIP. �� --'— (I,..ntlyd a tiltNns.tes f lighI • • vs, Lit' pell.ntt. le.nte 1 'I/I )7 1.rt l.nt - / . • PORING CONTINUO MENT PAGE c(MRf4_IIQTT Pal 1111111111110% IINII 1p INIII 501151 tits - allttslNt 00 aPtlllllalt IlUMttlil2 1111t11 tIll arts, 11011211. III 111112I116N ■AP. IN NCI. SI IILIIAL. 1 • • I l'AsEND C...201 Co.snhoolgnas' (h•151 )'Itt)IIOSED ). ' i-Oil2nsi,enoonea,np1e. O trlan.oleulcl'Illlef VIA IT) M1 BAKER kIDGE TUNNEL 11 S U U than .an I.,bn sample . Qv Unconfined Cwnpeesion lett.lsl r Su.nple pushed S Slate 11e1 (Table b) • So.I.ple nos ista.e.ed . C Creop last IFIS 211 LOG OF BORING C- 102 _Y_ wale. I...I - GS Gunn sue dnoltto IF.g.IS)A.ItrGe13l.Inlle PIv Poe hag OCTOBER, 1971 W 1984-01 - • - - vas.d benit Sits S i Ids. SI IANNON H' Wtl.$ON • ., •• No n. role.coMent Pedd •••n r.••nh„, • ...,,.,,,.......IN.....,,•I ws , • 1•.n%I•. u tn It ''1 Wow.*Own .01 I ...IT .................L I,..lr.e II 111 Pot...nnl.t p..1VIne1M • � ^ -�. r J • •---w 1•-- SHEET I OF 2 FIG. B•-8 ;R4 z FIELD DATA I— LABORATORY DATA• .- SOIL DESCRIPTION :12,,z, = Z STANDARD PENETRATIONTESTArfi a L a I��O io.e�pm,3n"a�ooi i p1"I" %WATER CONTENTWYt W• Bin..o..lost 11111 • fie W Svloc. Elevation; 1U 1 list o a p 1, ,1 , p ;1 I• II . 11 ID tee------ --- "� s - -•, 31IIr i IS SIT • CY..n II UPL. ___ - 5111 31 ° �f CONIOI, CNlN .rtl.n= III Ito — IL-_— ----r0 377 ------- - • ./.s,t c.1 1e HP I\ S • .,• pi 11 i.I.L 311 11e1 • • •� . - fll 110 _1e •� ------ _—• f . 11II► . ,,.1 - 1 T 10 er I — -- — I11.1 Ile -----..__..� - -------^--- • l . I 1 . C...l.tsl fl11/ 1 ' Cl 11 : . • I •tit `N GENERAL)31 . }1 ' ..,N. i INT STIATIIICITION 1INI5 ON Taft 1011NO t00t 3. I 11►1111NT TIC 1►►I0f1IATl SOUNDAlIli IICTICIN :v- Slit TIPIS, NOIIY[O, ill UTANII11DN N11. IN � PACT. II IISOOII. f i.:. ' LEGEND Ca+wl Consoildalionl•sl ( li.ls) PROPOSED ' I 2. D.split spoon simples 0 Trl•dal quick Issl,1sf(FM.IT) • II 3.0.0.1NN•r•il lu►.,.•mpl• a unconfined Compression l•sL1,I MT. BAKER RIDGE TUNNEL DG P SampIs pushed • S Stoke 1.41 IToIN 3) • Semple well ra•.aN C Crisp lest Vy SIl . LOG OF BORING C- 102 • DI 0 . s- Wolof OS Wein hs•n•Ipls l/b.lsl r.rk.l ►Il PerlinI OCTOBER, 1971 W 1984-01 Walls:, Liquid limit Sick 311 INs SHANNON et WILSON Nalur.l r.lr.CMIMI 1 E.•einl Mille wellIlisill Oeddia• on well .OIL N[CNANIC.•/WN I rNOIN[.w. . OJT Goodman lees les, IFIg ll Poeumelle•I.rometn, wf _ - 8 : SHEET 2 Of 2 FIG. B-8. r.A .• • t 1'. 11,: • ac _ FIELD DATA 4 SOIL DESCRIPTION --•n•n--:•r-- l AA()RA(1f7Y DATA t ,,, _;W c STANDARD PENETHAIION TEST; e 1. r^ ',I: U40 lb.a4h.,SO o•onl Lt"" Y.WATER CONTENT W W Get - • blo..D.•.M. `�i MIS SurPote Elevot on' Ill 7 real 0. 1 ;s I' t l VI!, Villa ill nail]. cuy,T 1111. vertical )oI ISo__—•.___I — • _ • alit, CUT 1I1■meted:•. 11111 1111. . 11.nt1 1 • ult part.ngs, 1e/01n1 VnU•I I, 1 CM `. 1 herulnUl. vertical joints [ 'RNA SS.Y.. 11II1 •\ l lIT CN- IreClun/.fllctont10.1 surfaces. !-+`- Cl, Sri 160--• - -. ... ._. \ -.ci -- •— - •F~ -- - ----- • g. 33II1 t` 0 11.41 1•-ALL Tirllc.l • giants 111 170 10 1•-•11, ---.I • • • )S1S1 0 1) 1 __.... ___._... __. __ ,111 Nate, I:ahl UM,. rand,. elm, Sill . Ihl n•_I. 1 .ally Cut.(thin!, l..:naval.• . S.II p11a J1 j• 110,_-- -- _ _ .ID_S • S. ----- -_, 0.1 ital% of lagnl glop, tall I. s... ' Ilia.nt.I. Sidling .ng los al Sri ,I1..4 . 0" le S. It o■ hail aantal S..-y.. Q III a 11 I___ 111.S1IZ 110 _ SO 1 ►� IOtU. of Io11ng tall 3 rut) • G•plU•l 1/1/II T1 • • . 1 . • II • • • . 1 e GENERAL NOTK • ', ill SIIITIfICITISN LINTS ON THIS! 1011111 1011 SR/II SIMI TNL I/IIOSIN&TI 10YM01111S WHIN • SOIL ITIIS, N0111II, TNl TRANSITION NA1. IN • FACT. III MOM. . ;!... - LEGEND • Conaol Conlolfa.l.onloll 11'19.151 PROPOSED via I 2'ODwwl spoon/ample. 0 Trmaal•OuldNlesl.t,t(FI0171 MT BAKER RIDGE TUNNEL if .3"0 0 11.w .01110Lo oomph. OftUnconla.e0 Compn.lon dN,hl samba.°saw'. S slake teal (Table 31 LOG OF BORING C— 103 :~3 . Sumyl•°ot of.w•a•a • 4 Cuon Ina IF,p 215 A Y- Wale/ WoolIlti G.u.nuseonolp... I.II)) OCTOBER, 1971 W I98-4-01 • Allotting I.ma).• Hay Put long ' 'iv—.•L.auad I.m.l Slick Shc Y•n..°o SHANNON & WILSON t101ur01 waist tonl•nl .ri Bedding suit ...C..AH.I/. , v....two.a[Iw. - 1 ' -• • PIO.I,c I.md i ODNlvol.an ..II fin.•G!T .0,.• .•.!(Fig 91 Pneumolic p.aOm,f.t . SHEET 2 OF 2 FIG. B-9 . • • Ala i SOIL DESCRIPTIONy. FIELD DATA LABORATORY DATA t I /t f T • RATION TEST ,�„s %WATER CONTENT L 1qq! (e0b. ama0'aD1 •Stows Dr fool co' - S`trloc1 Elevation: 7n I loll T— e S iD 4 !l_ 1 I1 e1 l Sodium Jells, lilted to limy, toll silly. IIa1 to meet a LINO 1/vu I I • I I 0'11 • ----_� -117.1 17.3 'Mud is lies. . Vey, eery 11Itp. !I • • line to telrll SANS ./clay 1 0111 OM (7111 .Its) 1 I- 10 • . -1/1 I- 71 WI stilt. gill. sill/ CLAY I clayey • "IllFtllg 1I A • SILT• Iuune1H ■/light guy, sill milt legs Ihllughlll. 1111111 Ipp111 I ti TI ' hoe i0000el it,= silt►I III/ 20 I -.---• — _—.—� --.. •-CN 1 Yelp 11111 to 11e11. 11E11 I lilt gill. sit", 7 I 46 • silty CIAt, ns a/oo■ lrr.tlt 1 sliclJe a ley. occeslsmel 11g11 gill. 0141 I • tilt I lino lino m/ 1 cIIF /0 • ----------. - --_p14 17! ..._.�J. _.. -.._...__ ♦u l lop 1 _-"_. tone / fine gntol thisughwl 7•• gel/Ins 1' le 1• lime heti I Slicks Saud S= 13 GS • pill I' --.10. -.- CN._......rl JP ' fllshs 11 I 4 . . /� 17IIF 10 \ 0. 5,11 • • Slicks \ • siren s 131 • A potlingf I CM 11 Slicks 1a E17 11 0. 7'1S •~ melting, • I 17 I 4 • it lct31• 1 1 Sttslad�, I,IIF .- el 0 ! 27 --•__- r I 171 1 ---17 iii slid. light I dell grey. clover SILT Ptgs 21• 17I u T • . I s1111 CLOT Lomin/lid a/Ilght grey. ./ 11. I • ml I CN 11 u It potting' 1111chlnsld,d Jells Ielctl 11 IIp o so -�--- stonsol - � --� wooing 0• to S' Iroo.h111 I 1 Sill III • t I• ♦ a Het 71 EV 100,- `!;--- '--a,.L II 1 • ?siting!. ♦ 54 • III 1! • SIII pal, ♦ _____1.-- s--. 11/4 1 27 ss► III • ' II j Il�\i•Lf ,.17 7..., III It moll of roll orals, Oaoea I till 74 a► 171 - --I a. - _ha ' SILT. 16.148144. silly, flee sand loons I silt postings, um• It,, 7s1 17- A • slid Clop Ilyslf !. Fr111• .1, 71 AAP 170 - ---'s •r C.1 77I ■ 112-.-114 • _7) 7_ 171 try/ dense. grey-elsea, silty to 71I 1r1_. !0 !•-GCS • -_ • clue. Iles t• medium SAN11nut1y Ill) SO/I'-�+► • -1! 7_ 144 7/x . • lolls■ 01 Wing (144.1 lest) ' Cee9111sd 3/11/71 _ - • :lap me rtgRot I Tj tell SI1s1111CIT I0m IINIS ON i11st 10IIN1 LORI Si au1SINI Ill SPPIIOIPNATI IOUNDJeIt1 II IIISN SOIL 1I►!S. N01(tl•• III TIANSIIIIN 1111, IN FOCI. II GRADUAL. • LEGEND camel COnsdiee11entool (Fig.1D) PROPOSED Z 2'00 1plil spoon maple; 0 Thawed o°ieh leaf,lel IF1I.17) MT BAKER RIDGE TUNNEL • 7I S'0.0 Ihin•.oll tube sample Ou llnconfinsd Compression IvH,M P Semple pushed S Sloes lost (Teel.DI e Sample not recovered C Creep tool IF4.211 LOG OF BORING C- I04 _2— Wale Neel GS Groin Ion*navels IfII.IDI OCTOBER, 1971 W 1984 OI ----- Allot thrills: Plp Por ling • • `�`.-.-LiquidWalt Slsl SII leis SHANNON 6 WILSON \ -Nolmol qla Centlnl i� Bedding eoa N/GNANICI I rose N•.1ION II.GI —P1eelIC limit Obey%ration sal • Gdl' Good'mon jots lest(Fig 91 • Pneumatic p,•tnm•la , .�.. �... FIG. B-IO ,..,. , • • --. _NITEMI. ......, FIELD DATA LABORAI(. DATA 1 4 SOIL DESCRIPTION m� --- -- a z_ . Il =ec i STANDARD PENETRATION TEST. 01M1e X WATER CONTENT > }� 1140 ID.Ought.SO-drool Li W WS 6W= ♦ BIO.t per foal MIS J L• Sumac• EIIIIO+l Oft: 154 3 lAel �� s O p 0 40 _ tD _ 9 )0 [ _.--_4 N.dr.:e dint[ Is dent. glop. lint Is Ir w rd,c. SAND •,..vivo 1 I I • _11S 1 11 7I 10 _—_. .._ _—• -I --_-- Sri, SANAA, 0:4.11 Idle fins SAND •.lr.4/1 I L 11 •1'.� • • .131 7 _ 72 Dens,, I .. veto s1111. I:n. SAND e• 'S I • ^I _1)0 3 %colleted coat. send l l.nel 71 •r.lneted IIllf/— 40•-50. r, 0 I.70 C• .. 7. Slick., •1 III r'''—'----- S CII --- ----- '--; -- --.. .e1, .tilt. lisp. silly CLAY ( ) 70 --- — b I( •.____. . .t.li.lel tilt.. tint 1111r11, - ANNlltut .l.t.en.11st I lens! Minor 1 I 4' • till Is1ti,1, tt:ou - . .- 1 • 1 III r 10 --'---- 1 --C — - • - - -- 1 l i )77 • c t • lagq! 1 • S.Il IIl 0 50------ -- -- - --- -- D+Ii \ '- 1)I 61 • _101 3 --.- .__-_ Tr.ee Sill➢ltISI QQ Mud. 11101 FIAT. l lr.r-arch. cloy., I)III tI0 t0 56 l. sil Iltnt 'toy. 'Illy CLAY t Itrr- 11 1 11 - - SII �- pld•n. fins umdr Slll taw. do[.en --�'-- CA ) )6 ..:T[-� -, of lies in N.d.u. and (ethic 151 4 f • Deeding. .oN. Ilsttutlnl 1 11II1 117 --- -- . 17• -'-�, -'- .0!4PLA=11.L-- 1 IlI 'Priu 11�Ot • _11 1 ___ so 11111 10 -.- _-!. .1L son;rllllij— Te.p dons. biol. to 'too sll,Ip. lens SIND trod.. lu nt.rlp Ott. III 10-+414 • lino 11 MINE SAND Y.ice 10 lug Oil to.----- _ 10)..-. • ,_II S-_.__.__ _ -.------- 11 III G1 • ' lo•lls.—II Doling iii I..I I-- C..p1.tAs 4,1'1I • -- - A ,), l , t 1 I "' GENERAL Ny.E . J INl Intl11101110M 11M(S ON 1M1S1 1011N1 1065 • 1111(215t1 1111 A11101I5A11 1001041110 0111111 2011 T1116. 1400111211, 101 11►NI11 III III, IN FACT. lI S1l1Yll. • -1 aY LEGEND contol Con.dlidotiontest (no 1s) PROPOSED I 2"0.0 split spoon sampler 0 Trio■laI quick test,ts((Ft8.17) - I .3.O.0lN lnp w gn n•rolllu0a soll unconfined Comslon lest,lA MT. BAKER RIDGE TUNNEL • Sample pushed S Slake 1•II (Table 3) • Sample net',mired C Creep teal (Fig.LI) LOG OF BORING C- 105 1. S. Water level GS Grain lies analysis 1FI1.131 Asiarbsrl limits: Pig Porting • OCTOBER, 1971 W 1984-01 t .-----Liquid limit Slick Sllc►snsldes • `- ,--Nolural.oler Content .+v Bidding SHANNON & WILSON \--PIas1Ic IIm1I i Observallon well GOD.MNCNANILN• FOUNDATION 1NG.M .j (•JT f••••n•nn loot Ir.r IFig 9) Pet,,..ail[DtstomN r- ' Mr,•'__w , ,I! , • • FIG. B-11 1 • 4 FIELD DATA,,.r . _, LABORATORY DATA 501E DESCRIPTION = e. STANDARD PENETRA ION TEST �— — a I 8=�s�.I 1140 to right,30•*00 DIMI I II.WATER CONTENT m Surface EI•votion: Ill 1 1.11 0 + II I A201o•apOr Af to MIS d 71 � N! . 0 sI '• 1 ardou. Oens. I. .Nail• Illy. • ' soli, 116i t1 [Nun SAND a. 111 1 find lien II if • II • . .•• • _171 1__ 11 _ . Pus, flip-I?Sln. • lone le C Z 1 ..rill I_t1,1[1 ion/f SILT (TILL).• .` .-_-'-. 77 —r• ' Vets slllf Is este. fay. .ills CLAY Si • s *Lel tsl,h tine mill t 1 Z - 70 --+--•---- - --- ',III 1 71 Mere fill- • Send) l NlHT•f DZ : /'•--1—..--- - _"GCS Sill l S.■1 silty CLIO 100000• w cY (1 Srn,.IlA.11n /[t el1NI.I silt ' OA:longs. /10(1nf apples MIII naIII • III C • 'r 1^l 11E0..1,1 Ilan sli nee and Ion Belle 55 Illt a/Tale v SC - • •;.�•' Merit. Sill III - — loom stiles. uI •• 1 )a1ats r • . III • vet) Rents. flip-Idol, Silty. Ione 7/ tat 71 51 . • a • lo. [Russ SAPID tontllnlnf o r eOutl one II r111 l clef 'Ilk a •" III ,. 1/1--•* • eea >ne1 1111 rims .I 77 feel to III Ifs---"1. • • .10 1_?S!r, 11 0 Ills (Intl. pip- silly. Ions Ili --...4. --r Ie .Nroe loll 5l a�.__ _ Ill S III . 01---.1�t s • Isles. el listing (II 5 feel) 11 --,— — C:c.telsd a 11:11 e • I e01SS: 1 1011NG C-10S ISO DRUM CV 1171 10111111 r 1LIMDIS. • 7 /0i5701S CO111Se10 01 OAeS ►OOIS/LS *111dbO 11 DRILL 1*7(1. I • • GENERAL NQTIi dal S1l1Ilildl7ltM LIMOS ON 111S71 101111 L111. II PPISII) 1al O►rSOI roil 50010►Ittf /111tt1 • SOIL 11411, M01L111. 111 111M711101 CIS. II - . • ISCI. 11 GIOOOOI. . LEGEND tonsil Consolidation teal M9,15) PROPOSED Z 2.0D splrl spoon sampler 0 Triaaiol quick Iss1,1011Fl.IT) IS )'0 D In.n-well lyb.sompl• w -Unconfined comprnal.n tnf,to MT BAKER RIDGE TUNNEL P SomM.peened S Stoke Zell (T/01. 3) . Sar..Di.not r.c..er.d C creep feel Mid:1) LOG OF BORING C—106 -5L woe.. I.... GS Groin do onoly.la (/I/.IS) Arl..u.rgIla„n" PIG "ParIlii OCTOBER, 1971 W 1984-01 • l •` •--llou.dlimn SIIcS 5lltksnudss SIIANNON & WILSON, •No...o1.01w MOW •' Iledd15G • • , Ul+srt.o110n NII .W1 WI t I O NIS I•I01.Nu.nON.NN•Itr...e Plastic IbMll .. ... .__....._. -•-: • FIG. B-12 • [t0 V • z FIELD DATA LABORATORY DATA 4 SOIL DESCRIPTION �Trr 6—• -- - ---_. • . ;':. I' ati d�rW'Ca: 140Dlo rsanT30'O.uupl TES ulnle %WATER CONTENT 14 S:,_ W _ _ _ W.. NQ X— BIOr{Re tool MIS Surface Elevation: SI 0 leer c ,�3 7/ 41 1D —~'rrr, .loll to hero (lip bloei eenur rlerle • 0111 • Icetlelen tine, 4 \illy glee II•PI 11 1 • II -.'• 10 - - S. _4 7I h�+ • �� t ,. �c1 l Sim i / . I ;e A. _IL I__ 70 III► -- So ------- - 1Le t_101 .11�—1 re,1 arose. tray DIo•n. clayey, silty. line e. ` SSNO • [level 1 silt 1{serI I inclusions Y Sl 0 15 11 ti — 'lely Dense. gill prowl. U 1[ntPy slltl. time to 0e4lue SANG.n44114 Sty 11 L.L. 41 1I 11 --'-- -'-----� Sett{• el Some (41 lull Culletel 4/1/71 • • • • • yen , • .:F • a NERAI_IOU IN( IIICATION LINES ON 'NISI 10RING LOGS atrium! III A►PROIIIATI BOUNDARIES WHIN SOIL Itr4S. N01ET11. TNT TRANSITION TAT. IN FACT. 1E MOOR. . . LEGEND Coned Consolidation last IFlg.1S) • • PROPOSED I 2.0.D WI'Peen sampler 0 Triasial guide NAM(Pig.IT) • • a 3.0.D.MA.pea lab,tonal' Ou Unconfined Con melon fee1,11( = MT. BAKER RIDGE TUNNEL . P Sample paebad S Sloes lest (Table 3) • • Sample neteeeeeerad. C Creep feel (FIg.211 LOG OF BORING C- 107 S.. Water level GS Gram site analysis (fig.IS) • -- Ali.tberg Malls: Pig Pooling OCTOBE Re 1971 W 1984-01 • • •-•.+—Noti tine Shah Sliceensidee ,•--•Naturalreter:.men: nv Bedding SHANNON Oa WILSON f •••--Plastic limit Observation ■.II e01L MECHANICS•I(N.NOATIOM IN0uNlena e•T Cr. ••.e..., I.,. I Pe.ramollc pretanalel ` ........• .. ..•.....�.•� r— ..l... FIG. B-I3 cl^l' N . •ti vi I SOIL DESCRIPTION --®fFIE� DATA LABORATORY DATA 7 1 y 2-R 1 31ANDARO 14:NLTRATION 1EST iV a/ I1a0Ib retYN.70*Wapl %WATLR OONTENT _., 9wfac• Elevation. Ip 1 tat --- ^a * •- •Wow pm Not /rcr.. to Ism. 'Lean la stay, silly SAND 0 l i - • • • *Mt stsllor►d gloss' and a/snlc Wslul 71 • �4; 1►r e'aa le 11111 7I - • • .7, dI i 11 • 1 I • tie I le SI• , '�" 4 Pelt' loose to raltur 1 gray ant IrsrN, )I • 0 lolly Is clayey SAND 'llS ieettsrsl tine 1 I }0 • , S • gravel end sigmas' oeterlel. • ; 110 1 27 II ': 30 IN I Stilt. Orman. clayey SILT IMP Ialett sad III •• pockets el slay 'Illy clay Scatlors/ organics. II T7 •• �I Si Ill --'r • Puy slily 1' hard. gap alit CUT „"ors. U •1—4 `!<r Illicit/tad A 1IIIAensid1/. scattered 1 PO • .:!' and cant. 111 •t IP 71 --- '< I1 '1lia � 7 17 �i• CN SS • Mil I It 11 F��• 'CM•a-� �f'3' r7�lj1 N • 11 71 •�1••- M-- '-� I_ 7d SO ___.'•- IS n • CN Fill 137_1 11 31 � s • Nate 'tap. •t(nl and Oats era,. Ia.r;alad 37 �`_ 1•��---1 silly CIII and clam III! 'IIN alrtke np,/rt II 11 a_-___ ,--.-_-- • .-— .. • 110 • sae 'meal. _13 It •• --+-� sail.• aI is,tine III 1 Ca. _ Nolo. !Pit het,"' II sled al the Ielbreglaa di Slate OsparlNenl et Nrg5 . C.Nrleted 7/21!71- t . • • • IT M RAL NOTE . lit( STS11111CA1 INN LINTS IN THIS( IM 1NR SIRS AI PRI SI NT lN[ 1HA011/Ai( IOYMOASIIS /(11(11 . SOIL 11115. NOIIYIN. TN( TAANSIIION SAP, IN • - FACT. IL CIAOVSL. LEGEND ce.ol crosalldal•rnl„t 1Fig Isl PROPOSED I 2-OD spbl screen'soapier 0 Tri•n.dl gawk Mml.tsf Wag 17) I 3'OD Min-roll Moe sampl. a Uncoolmed Compression t„I,/d MT BAKER RIDGE TUNNEL . p S•mpe pulled S SIWe 1e' f 1 ITsble !) • Sample roof'''gored• C Creep Lea (Fig.71) LOG OF BORING C-108 . _IL Water level GS treks the aniline (Figaa) Alla.berg lln•1/s: Ng peeling OCTOBER, I971 W 198.4-01 . \.;,.= N5lo limit She: Sliasensld„ SHANNON & WILSON •Nal",of refer content La' •boding ,...--►loops Ilmlt Qbsrvollen rill Sens.N(ONANK••r01MOMION 1114,0“LOS t f..11 fo..w- ••, art tin,• Ifi• 9` •r. P.,.magic ptaroon•low � .•'I - FIG. B-I4 • • FIELD DATA LABORATORY DATA 9 SOIL DESCRIPTION . , 7-12 5 STANDARD PENETRATION TEST %WATER CONTENT ydZI 040 Ito mnbahl,30"drop) A Wore per fool MI5 SudlOCe Elevation: 156 6 Inet 4 14 La g 2P 10 . ID 70 4,1 An SIND - CO008(1 to Omit. broon, fine II medium - vith all Wel glAvel • • ;.5 I • CIA1 • Vt.m il,f1 1m hmiml gimy molly _ . • i -215 : ,....1111 A 5100 - Dense. 0.mmn. clammy Ions 23 5 y /I 107 6-NSMN7 • S18(1111y coompmc.1,. be.n. f7 mpylm.tosimly ms1mcbreiing CIO, • rm., m1111 04, f$11, 121 I II ,,, — JO ! bui,mc ima Inn 11,1 ImIlemIng /1 1.6.1.114.d li•• SSSSS I... • I trot 4ollne 11.11010 al 37 0 II DI.IIIfli 1100000 at Apeciloill 00000 til F • plan. ob 00000 lion Wan al 1 plostic to 31 0 It• Sow., talon al sascullid :4 Y.. dealt, Co Onlmrsino 11 saleobeafing 1.e40: pie hole upon completion It hole in - 11-4. AO hauls eft., 2.• must, 00000 s1111 112,11011111 at bottom If hale 71 4 Samples moist Incept r li ,i of met Send ei MO . • • • • • • • • • • • • • , GENERAL NMI .1? THE STRATIFICATION LINES ON INES! BORINS LOBO WIESEN! Till APPROSINAlt BOUNDARIES OMEN SOIL MIS, Nooma. TOE TRANSIIIIN OAT, IN FACT, II MOM. • OAtit INC INC ittStoltolutot 01 01514velle11e 0111 A0011110 IN 11,13 11. .;3 01 11‘1111 Itell ON 1015 II WAS it II 3. DISIIIVATION VIII !IWO 11711 PROPOSED .11(1111NO MI% 111111)111117 till AND I0III4IlhD IT IAN :111 11.1.1116 •LEGEND MT BAKER RIDGE TUNNEL •I 2LOG OF BORING C— 110 • .00.split spool,atanoplr 8 lc 3.0.13.thin-“ot!tubs sompls OCTOBER, 1971 W 1984-01 1 - • ;, SHANNON & WILSON • soli.MECHANICS•FatelvDA11004 amoimaan• • • • FIG. B-I5 • • ; • - . STAN0AR0 PENETRATION RESISTANCE SOIL DESCRIPTION (140 lb. :eight, ,Dolma) W =� S�.- z-- hlloes sef lout s.Surles, Elssatlon: 123.3 0 "°� ' o 10 29 40 60 Frown silty fine SAND with fine gravels loose •0 0 I . . moist 2.5 1 I Gray, stiff clayey SILT and silty CLAY, moist. . . . . . • ' 21 . i Gravelly .SAND - brown.with all sizes of sand 4 # • ' I . . . . . . . . . . . . . and fine gravel, loose to dense, wet. 5 • 21.5 7 : . :�': Sand SILT with occasional gravel - compact, moisE. 8i GJT . � 26.5 I . I " Gray sandy CLAY, very stiff to hard, moist . 10 30 ._.........::....... Silty CLAY below 31.5', very stiff to hard, 11 ; ' • dry to moist. 12� A` • " 1311 14 40 ..:....:_..._:_:._:...:_...i..:-::..._:.._.................. . ....._.... 15— 16._ GJT • • " f 17r 47 1e I . . Gray SILT with lenses of silty fine SAND and , layers of silty CLAY, hard to very hard, dry to moist. 19 1. . . 20J : . " 21 22_L 99.-0 # • 60 ::I 25 70 • : 99-'►:! . ._. ._...._..._....._..___.J 73.5 26 I Bottom of boring at 73'6" • . Hole caved at -10.5 upon auger removal, remained same 24 hours after, no water above. 80, - , LEGEND 12"0.D. split spoon soaple Ithin well sample CJT Goodman Jack Test '*Sample not recovered PROPOSED NOTES: . MT.BAKER RIDGE TUNNEL 1 1) Logs developed from Washington State Department LOG OF BORING D - 70 of Highways Log dated 1971. 1 JUNE, 1981 W 3573-04 2) Th• stratification Linea represent the approximate SHANNON a WILSON.INC boundaries between null typos and the transition ma,�x mese loam 1. may be gradual. w'r� FIG. B - 16 r STANDARD P[M[TAATIOM s[slsiANtl ?a ' SOIL DESCRIPTION W - p_ F ) of Jr �®lo.e pal loot furl ace Elevation: 133.1 o w `of �� (I/0 10. weight, ]O�drs o Q 20 49 60 Gravelly SAND — brown, silty with small 0 1 T 0 t ff amount of rubble near surface, loose to l dense, dry to moist • w.'' 2 I a, Sandy SILT - brown with fine sand partings,. 10 10 .. ,' • dense to very dense, dry to moist 13 3 I 81-s;4 SILT - gray hard to very hard, dry • • 4 = 112--* 20 . .. j. 5I z 66 —.i Small amount of gray Clay ' �. - • 6= Ix i 28.5 Ca 30 - 1 Bottom of boring at 28'6" hole caved at -22.5 upon auger removal - dry. P .A t .` ( • t • • l i i a; LEGEND c r '; 12`0.0, split spoon sample 's II3'0.0. thin •alI sample 4: ^% • Semple not recorded • PROPOSED • MT. BAKER RIDGE TUNNEL NOTES: LOG OF BORING D - 79 1) Logs developed from Washington State Department ( of Highways Log dated 1971. JUNE, 1981 W 3573.04 2) The stratification lines•repreaent the approximate SHANNON&WILSON, INC • boundaries between soil types and the transition ssotemoncnieoasutuAts may be gradual . - - _ FIG. B - 17 7 . . • '' • ' ... ‘,, .: STANDAND PENETRATIIIN RESISTANCE • _ ...SOIL DESCRIPTION -- (140 lb. isIghl. 30.drop) • • Allows per foot Surface Elevation: 137.0 • • : . • tu 4, r.,0 74k , 40 60 Sandy SILT - brown and gray, trace of fine 0 11 0 - gravel and peat, compact to slightly compact, drv. 5 21 . • . ; Brown, silty fine SAND with gravel and ! cobbles, compact to dense, dry to moist. 31 10 A. ..."'--• I " • • • . . . . . : sr: ... . . . . • 61',..414,0 . . • . . . • . . . .__ ...t....... Gravelly $ 18 AND brown, silty, compact, wet to 51 20 4.‹.: moist . 6:°4" layer of wet brown clay at 18.5') • ...„., : , . 23 • . . . . ....,; • : : own silty SAND with occasional gravel, 61 — : • "NAL • • dense, moist to wet, wet at 23.5' ii-- 25 . . . . . . . . . 1 . . . . . . . i . . . . Bottom of boring at 25'0" 30 , . I .. . . . . . . . . . . . . . . . . • 1 hour after auger removal hole caved at 17.5° . . . . . . . . . - dry remained same%20 hours after. 1 !• . • . • : : • : : •• ' . ' • ' . • ! • • • . . • . . . •' - ' • LEGEND I20.D. spiltspoon simple. 1[3.0.0. thin pall sample • Sempls not recovered PROPOSED . * . MT. BAKER RIDGE TUNNEL NOTES: - 1) Log developed from Washington State Department LOG OF BORING D - 80 of Highways Log dated 1971. J.UNE, 1981 W 3573-04 2) The stratification lines represent the approximate SHANNON E.WILSON, INC. boundaries between soil types and the transition , SIOTICOMAI.COMPLATNETS • maybe gradual. • • FIG. 8 - 1 8 . _....- -.1L4...% tAit ICE...." 1' FIELD DATA LABORATORY DATA SOIL DESCRIPTION z 'SW y � 9TANOARD PENFTRATiOM TEST �rHCM y WATER CONTENT ',•„y, g ■S tie (140 10 reigne,YI•n,nl TESTS w &i a it: •IGto..per to 64 9 ZD if ID .�" W Surface ElevaSuon;2D1.1 gait 1 o �— Lou. to ■Uium dens!, I1IhI bIo•n, Iearell/ Ij I •• ;,z, silty. tine SAND. S+■Dlu 1 +nd S .pueuad 2j I . • 1 ' a!?.�,� ulun Ud, Pieta of mood tom•0 In sample 3 :SL 7I I .• • t7,1X1- (Possibly IR111 _ t • //p 10 I r-- 4610, yr+/. SILT to clayey Silt. Contains d • ,�e„,,I: metalline! I.ght yeas. silt I sand Darlrnyl II 161 to - son plrtt�e . . ":. ran Ill!. Silts. cur tones and occ,Iien+l M IIIP 20 ! T• r 1j 109 Ipcl • •'a•�,y.: Illcunsidad clry togas. Sample I/ had mot , . slit tones pr mm.t' 10j • IIZ I 11 • I • l■ I 1 o . . 1 3 I r,i� • . • . . ItI* '`A t]I ati--- r]i'1 tar '--_.. ...I'.w 9 n LULUS__ • ro III I tl a r r 1 • • III % • •• Y•r/ Ilill to naid Bias IirlT CLAY • III \ attl110n1I Clara/ Sill tuna, L.narall/ ♦ I .CM + •a;sire • . nuea nuI Il itsan:�ar t. Curs Urns 20 /• \ • ♦ • �� ac Usron+l inln layers of Una and pUr1l 71� IO C mna 11ndr end Iravelty toms.Cobbles ♦ M '1 7:g1• or boulder.encountered in ". sample 20. 2]I • • : • ro t 241 • • • :.J.iv gfj Du- 1p ___,._-1 1 04 ul II , 'Ye 1 - i CN ',IS I ?U. 91 Opel • • 21I .._._. 4 ____ __10 10 (1, -I - LLi_Lr —1 1 - MarI I a Uilnl and dais pay ai ll/ [l ai and ii1 • CLOT. Contains Illcelflyded sullies, K In1Oulhaut. oc0utianll tone and sill piping% 70I 101.5IGr • and lccnienal gr r.al pm�ticln. i 100 • 31 1 ] 1 Isl • 72j • 110 cs& • I • 31j • :;.:i: 01 1 - III e,___. 21j Merl. tray, slightly clay./. SILT. 120 — _ Ct�.__•� :,:mv 101�• F - Cumeally thinly bedded ••Dint gray. silt 7g1S • � _ silt partings nosily hoe ironlal, numerous 71I r 2' to a- sena% of hard, Ilrciensidld• ]II . • silly clay. Occasional Ilse I11Y11 120 `'/ 011neen depths 112 le 121 lest ll -%, 71I i_ls .10I UP .}+7 . i 1 17Z EE►D 6 6 ii j Men phi tic L•; 171 • 111 9/ toy • ' ., � III wr' 18 I . 152 I1 t0� v ISS -• 1ny /enn, sr my, line S1M0 and heal, teal. .;',,'� SILT in iltelnatl 11fu/ (ts 4'1 •/scculonel 110 •- curt• sand and Zino gruel In Silt 111 10�„4, = Min /ISI Ut .��. 11.1 1 1 S 1/''1—=v- . e;i. Tery sap dsl. limy. Clean 10 silly, Tine 10 • ate. • medium $IND a occasional coarse sand n1 and I]D • OAINO CDNIIMUTD.MCIt PAGE ' . , LEGEND CONSOL Consolidation Iasi PROPOSED . 1 2'00.spilt spoon sample 0 Trioslal gulch Ise! 0 II 3'0.0.thin-emir tuba sample Ou Unconfined Compression fest till! MT. BAKER RIDGE TUNNEL `/ • Sample log mowed ° „�,e dr1.1n Creep lest LOG 0 F BORING E—I • Wafer nog reaoYered C Crain sail 04 •' 3L Wafer leg! GS °rdnsi+a analysis An.,berg linsilsi „ PIS Pawling • . Mick slicksmidep JUNE 1973 W 1984-02 LagaUlrereonlsrs /// Bedding Plastic limit 1 obsa•allonOil SHANNON9WILSON. INC • PYalld pommels. J Mm pow WO snit ralpbt(rt Il SOIL MECHANICS ISFOUNDATION ENGINEERS _ FIG. B - 19 • • FIELD. DATA LABORATORY DATA • 1 • SOIL DESCRIPTION = ec P; i STANDARD PENETRATION TEST 3 CON11Nu11 ► it ►1 MUS PAU t i d tt 11e0lb•ragM.lG4ap) TICST xWATER CONTENT °� . Y W.. ♦Iliom•par laaiT[ST1iir SIAoc. Elevation:714.0 tool " Iv m j u I 11 s) 1.II A 21 41 11 . Stop : pay. Yuan to silly. lame /11C 11 •vIl-.. • • IN Pelson SAM1 a/ 11na1 / ' • and tens ,lase. Samples bolo. 111 toot I11,1+li • appeslsl salsa sled. Sand bush In salt III .h.n.Pilling Item ITS to 111.5 loot r IIM eh try tnUi that am silt /1 •tbt ;, ,II 11-� •• . In fuseless 11,11e snit. .• USI1-e r • . III .• iu 111r1_..,♦ • 7 I u1.1 KT 1l1/7l.. • Settee et I1rin, 210 • CemfteUl 4/4/7S . MOt1S: I. lotto, made by Ioohin,lsn Stet, Nishooy • 0sssssmeat sltl$ a hellos stem mmme1 dash -'"_—' III. . 1 labeist•ly data plsri/ed by Ihs llahin,let ' State Mi,huly 0epsrlPont. 1 Ili. 51l4t01411tea IInes on shell biting . lull tolls\lml Ina left ee,mete ea Yae111a1 . hilee,a sell lyill, ' 1. In• Illltasteel POP. In tecl, hi ,I.1u.I. a 1nt ins los preen sd by Shannon I Ills,.. Ins. • • • • LEGEND CONSOt. Contoi Witten feel • I 2'O D split spoomsompls 0 Tria■tai quick lest PROPOSED U 5-0D thin-sell tube sample Ou Unconl,nod Compression lest IiH) • P Sampi•manes s Molts lest MT BAKER RIDGE TUNNEL Somple not reco ened C Creep rlei . MI.. lee& " Pall Groin ey LOG OF BORING E—I (cont.) Atiet ir•r®Ittnte: t'te ►v lttip . �t— 1.o•Idlttnat Sates Slic►•otlle• JUNE 1973 W 1984—02 National water consent /// bMine -• ►1otl.cltm.t 2 Olaser•otiaevIl SHANNON&WILSON.INC. mk pl_ ptruol •zemtor e SOIL MECHANICS S FOUNDATION ENGINEERS (Cont.) FIG. B - 19 1...x,t' • FIELD DATA I LABORATORY DATA : c SOIL DESCRIPTION =yn Mt ANDARD PENETRATION TESS I)T1C T X WATLR DOMEM • 6: Sr.!5 F..' = II40 Its..iaru,yi drool I 7CLTs Wu...Pe.hwr W Surtocs Elevation: t;rt• N1r•rr sue$ -re al —Li 1 r_. _1 r►11 Oily 100%e to•rd,un dense. eons to eel. SI_ 1 t ` • - oroen sandy SILT ••son Ira.al to Y. — 2 I -..._,_ • 3 I 149H ---- - --r7o -- q I 63�:t► • '� Dense Is rely dense, pint is SILT a/,adios 5 I 1C --'_.-.."-- • of clay •nd sualronel lllclentldet, 5 II rJ11.•t'rl • 7 r Iw 11'.H • ' • H 1 • 9 I20 -- n • .• 10 II P • 11 1 I GO-J • 12 I 1 n>-1,1h • — • 13 I-10 111 ,2-. • 14 II P QU.041 •r -.-._LC__''' _ — -.340 15 1 T1w.10831 • lily still la held, moist, Ins OM a/poclel Slicks of 11try cloy end ails. Sucks 16 I lic • — Sous 17 I40 • Sucks 18 P %u.198 . r-.• -Id----. . Sluts: 19 1 IL-',...• Yw.tp74 • ' 20I • • 50 21 I •• % 22 I • • — QU.177 f 1.�_ CL_, 24 yy J.P 7Sw.106E • Slicks 25 I 01 • — 70 -- Slicks 26 I • 2/ I • —• d0 2B P `---- — -c j.u38 l w•1047 rI I....__I...I....___.s -- • 29 l. r3g.7 - -. .-•S(i ii ti,_'870 30 I 72-a • CNO ' rely dance wrist Emirs pay SILL. 31 I 76-414 • Sand Fly: 32 I IU4--•ay • __i • i 108 • • , . rP 9002 • w tOD 5 • -498------- ----- -- 1070 35I. 155-s.A • — very dense. Moist, pay SILT end FINE SAW 110 36 I 168-4.11 Ill do Very dente. moist to set, Gay WO to SNOT .. 37 I 1;t./9=+J 120 i } —1220 .`. 38I 1113-moA . • ' Very dense. trey.IIIE SAID • Ill Woo seem el 177.5 Ins •4• 'SO I lll•I e.4. — — l v • '-233--.-. .. -------- ._. ..— —133.5 = 401 124--ealh • Bolton of Imes(ISS.S') tiyt I 4/ISM• v. MDIIS. I 1o11n1 Mlea by noshlnalen till.Missal O.p.iln.nl — M11n1 lelaly lull III. .-....-...._. . - . .. -. - _..--- :a: 7 tee alalaiy del.plee10e0 h1 Ins deMl RAW 11810 +:z: Mrineq depellseal. . ,1; J The 1llaLllullon lines en these berm lop • le;relrnt the epploereale boundaries 1/leer0 toll types. • the lraetitili bib In 1A, • fact, Is gradual. ' y, I. Soling lob prgatl0 by Washington • .. • 4. • Msbheay 0 pint. ._ • ,.-.-..-, ' LEGEND CONSOL Coneohdationtest • ',; 1 2'00 sold s000nsornoie • 0 Trrasialauras lot PROPOSED a 3 0.D thin-sell tube sample Oh unconflnpd Compression test list) MT. BAKER RIDGE TUNNEL P Sample lwshed S Slabs last • • SampleCreep Nil LOG OF BORING E-2 • Y Water level GS' Gran sirs analysie '.� AtterberatueuIl+ PIW Parting '• • t �Lipurdl+ml il,ce 511c►sesides • 'JUNE 1973 W I984-02 ` - Natwol ogler eonlM l/i Bedding Nestle limos ('1 Opeerrolion well i Pneamotid o»e ll SHANNON &WILSON. INC. IX WS'?H Standard 2 Rung Sampletfw Wit err It weQM (pet) /01L MICNANIC• FOUNDATION INGINCImI . ...1 �9 :; FIG.13 - 20 a LLD DATA LABORATORY DATA 1se SOIL DESCRIPTIONI. . E^ E. STANOARO PENETRA_TtON TEST at„ER %WATER CONTENT S g 040 b 't, drad TESTS • S ; 6 Q A5�1 °•r 6 1 Q- 2rt 1.1 SvMC� Elf•OI)OrK 184041ltt • • M .o.plea,wilt sum tjanc sill _ ---.—_-..13 2I • . •• 3 1 • Wiwi Mon to My Nam,Malt tl wl 4 1 • lnaa silly Sad/.•Ila ossectM 111•t of `{,— poiU IcptuU t►rlaMwl, S, 5 11 • lMU1 caw Iola boll It 11 INI.) e I • . Mostly sill • 16804 still-- — 1BD T� • I �11.203 • • IS, a to sad,west,clit!sad 0rw-1233 • lams al Vq clop?fall.SILT at.LItI 210 11 I • • •1t1,cttiis•al tiac•a at 11N{Idol o1/ • • • lino med. 12 I �U.1D7 1 • CH t ' 13 IP lsywr deg6w.tD4A • 14 is to I 17 IP i .2 tee 1-- -rC-H-1/8 wins: Uv+-1047 .. 1B r 1. Wing milli Its Mlelatlw Slots/Ita•ly r Imn • a.nitw•l scut wady drill tat so 131.1 o� silt 19 I . !eel. awal•Ni o1 MN drllio/b boss 20 I.Mid wI1M. i 41 50 - j ,' w 7. Law tt•tt MU/miar by1w tlwlsslw 21 I • 'c$,.. i Stale slut.'toprt.osl. 22 Z • • 3. O■ NIUh limes r {bow booing IP , •147 i— �~ Iq1 iopnwsl Ill gynslMq ws.anbl 23 I wa(Xi.3 w mom soil tm es;bN■dlt. Is trt.sitlss I boy. is Iles. bo podia'. Slid 24 70 Slicks 25 I i 1. Milos lot mopn1 by Msciylw Slot■ F Hammy tlpHwot, SHIM 28 1 • • I • )lima 28 I L 29 I • 1 30I a1/4'....-----"--1\ . • tOD \s. SAITO.tl • . toms Imo 31 1 P ` soul pro nP 32 I • 75 • gilds 110 •a.l. pop data 1•slope?tau•II 33 1 ..,...anal. leis'sae EMI. • twee/In.r .14 I .. U in.s• 12y '---r - sleds 35 I 0t./1e • . 36 Z 134 • • 130 S 37 I wie 47D4• —- 1DZ0 3ti I K11Ai•- • evil 1■a1■. ail to mt. list Lilly Is clot.Sat. 140 • 39 I 92—_ 40 I • to • iitt It Manz_ 153 • . =41 I '20. ma, • .- 2104 --163.0 — 3 Z 2__ • ao■io II Milos cwtls1•1 4/71/I7 . LEGEND COISSOL C.,.IiNti•atlr PROPOSED YO I 2- .n D NMI sa 0 T^a'l li/.iea is MI. BAKER RIDGE TUNNEL: II D is -.•ll It fete sample O. Unconfined l:.siMw Me 1 11.11 S Slake mot , . mio yla� G5 Gam .,,�„_ LOG OF P.ORINO. E-3 •D.•P.q l..ee,•• •,ll Peeler" W i984-02 i • '<< . .w'.l.�«e..ee.* 31.•• Soc.... • JUNF. 1973 P1..t Weil ■ i....r SHANNON 8 WILSON. INC I pw•awMic•iwsd•fsr •OIL YrcHANICS•IOUNDAT1011 IEIGIN[!RS i,.. wS m St a-darci 2'PnD 57rrplr 6w iMet uN1 w•)Otlt (AS}I ;. FIG. 8 - 21 • ''�t - FIELD DATA LABORATORY DATA • SOIL DESCRIPTION = oc STANDARD PENETRATION TEST s I-« W OTHER a: , ... (lao lb weight,30'drool %WATER ODNTENT ga W� A Blows pa fool TESTS N. W Surface E?e,oliOn;l1I.D list ; u. +y 11 a 2,0 !0 it • vita 11111, plain. Sill I Cll) r 01ganocl 0 • end 1'ne opal1 end dense. boson. silly line 1 • t • 111 0, \S+MD e•g1+rlI (rloDs011 MIT) � -1 .L7Z:li 4 • '• • We 'loll 11 hole. \toss Wading to Ulf) IAr 11 0„ 1 - 111 . - slllhtly clayey SILT Mac, of clay I y 10 ---:—)757 rtl • lonely ,►smiled to simple Mum tdue II I17.1 Icl • ill tllcl ens'/e tenseIo any Iona silt - • . Del linll Ihloulheul, 11 1c11 01 veg.! II • II to r--- • • 'a—ILA t2t 0 • 77 IIIr A' II.i ,RI • • eery stiff to hard. goer. clayey SILT I silly re •Cleo (lenelally thinly to Intcbly laminated la ' • 1101 tpcf • • end canlu yes Ihln tilt D+1lrndt I/O thin tone 1}= 70 • __ 0 1eis:/41. Genre ally Inctund and ItichintidSO "LIP \ �I II ill 1 • ---jk OiLotlan eI tondI and Inn osse fly lens Iy • • I 7e ' . IIIAc 101 ore? • MI 17I" i0 00. Ilp► 1 0.17 lel i • LE 4 re • III ' 101 I441 . ' III • • . 50 .----- oir • 771 • . 10 _ ,n 73ffe \•` �I) I1e1 .2 741 • - -V- 75I 101 1ps1 • See 7P Mole S o . 21/ • • 71I • 71 1 10 10, Mold. slay. clayey SILT to SILT with mumereul 711I •I It pulllnle and Inln lenses II floe sand. 711 11.P• • 301 10 J t1i11-..tA • jjir 57/6 . • • • 7}2 11'i 41 100 . 71x 175'lOC-n-41 • . 1 1 0 1 0/ • oty dense ut hard. 11ap. Isndp. cliply • 752 II•+rA • 17 0 SILT e:ton line Is coat 1/ gravel (fill Ills) 101 110 easy dense, gill. clan to silty line SAND, )g I 17--►5A • Simples 31 and 31 Meer set 7TI 170.'11.—A • 31A 170 _----y r -- >r 711 11y'1l•..0A • Belles el Illlno —' Ceb411101 3/21/13 130 - T.I MOTIS: . :;r I. taring aide by ■alnlnllen Slate Nigbur ' Oupurlmeal using silly doll all. , ';. 7. Lapis 1 omitted in nu•hef log O. '•'•r . 3. Lebo lv dela plselded by the lllhlsgte■ �. - Slit. Highway 0 meal. • ' 4. the atotliecalloil lino' an (hiss Wing —log' Iepustent Ins apblo11isll bound il ill ••y' 11 types. . Its 'vanillas ',:.:: _ gay. In fact. be 'rogues. S. OOnloloan sell tudlnit 1nd10ite voter ^r less) IS ellll 0osppinl. (I/1.73). • 1. gating Int walled by Shannon 1111tsn, o Inc. LEGEND cONSOL Consolidation lest I 2.0 D split spoon HMO* 0 Triaeiolquick lest • PROPOSED • II rot)thin.well tubs id rap!' 0u Unconfined Crnpfeasien beet (to) :�' v Sample bushed s slob•�eN . MT BAKER RIDGE TUNNEL recovered not reoered C Creep teat -SL Water btea°"°I"" !. AAttb rellnelmi i LOG OF BORING E-4 / ligu4timil Buell lbebrl/iddl 2 :` ��=Nmwolwotoeddtt/1e /// Bedding JUNE 1973 W 1984-02 Plastic limit ■ Observation well • haumaticpUlometr SHANNON 9 WILSON, INC. • ' 'Ye Wit unit weight 1pcI) ., SOIL MECHANICS a FOUNDATION ENGINEERS 3 - 21 FIG. B- 2' • . . , . . ' .. . - • . _ . FTELD DATA LABORATORY DATA ! .. 1- • SOIL DESCRIPTION x gE'n E._STANDARD PENETRATION Tx 0THER 1140 W.wept{3dissdad %WATER COtozwr TOTS • i Or, ILal £Mo.'s per Toot - w Surfocs 11•Willons 173.53 feet . • A ' . • 1 o 1p _4., Fn • A t STITT Is eily still.mitt. alt leg 1 . p 2 " • a .. 1 aaaaa el Woe clayey SILT. SILT end CLOT. ti 3 I . ' •i 4 I ' • . • • . . 2 !.) 11 • ',. ' • kw II sod : 0 /p jj..144 r •Ott-4 • . . MI.grevel - 7 I fon.10.4e. • . • . . . • - • I * • • . , . 1111 • . g r-• • - Niu_ • nbli . 10 IP i'J•O 62 •—• ,.— . . 149 5* 240 11 I Tw•1001 • • ., . • • .11 • • . • Tiny still. neut. grey. clayey SILT is - 12 r GAT at 31 feet. 13 I • 41 r., • . . 140 5 — — 33 0 U 54 I p PU•099 ,---410—cai-----11.8 ..• .-,- w.1041 . . halts'el boring caggletel 4/30/T3. . :-.'••• . • 4. • . ... . OOHS: • ,' • ' . i l I. bring sada by lashIngtea lOvey lepartmeat • . •. " using llllll 1,111 Ili. i- • • . .... I. Lab lllllll data pteetgel by the 11,bl/isles Stets .•• . . , Ili pear Deese twit. - •:•';',, . . I • . 3. Ths lllll I lllll les Ilnsa ell baring legs oepresent the 'NH81110511 beundeoles ttttt ee sell . ---- • tweet: . the ttahellloo Sly. in lett. Ile - vides!. • • . . ' 4 Ob ttttt lien sill reeding my be lellasecsa by turlece sate'. . 5. Spun' Is;pr ttttt d by eashIngten Stets Ilighemy Copse tment. , . • . I , , --___ .-----_---- • - • , . I . . . . . , . • - . , . . ' . . . •. . . . . ' . • • , . . . . . .. - . • • . • ' • , . . . - .• . . . . , LEGEND GONS01.'Consolidation hest I 2'0 a polo spoon sample . 0 Trioeiol quick I•st PROPOSED • . U 3-0 D thin-ry•Il NC*simple Ou Uncontsned Gornpreuierl leet list I MT BAKER RIDGE TUNNEL P Sample pushsd S Slone test • Sample not necrruerea •, G. Grasp Lest - • -5 -SL %Soler level GS Groin size cubalysie LOG OF BORING E . • Alter berg Insoles Pig Par tufo . • r----- L mind WWI. Slosh Slweensieles JUNE 1973 W 1984-02 . ., ( s • . .---.- Npowlloclierow.1:er ignited /// 11•441Ing S , • • Onsm•Oliort won . SHANNON &WILSON, INC Pneumatic plesonneter -- •OIL MECHANICS 111.IOU NOATION cm:micas ' at* w%nts mArsow,1 7.141•0 Saminn Sw W•1 .4n1 t. weight WO) i . _ _ FIG. 8 - 23 . _..-- ''!tr.o•-,-• . " `• . • ' ' FIELD DATA LABORATORY DATA 4I i ' SOIL DESCRIPTION if = qoe°1 >� STANDARD PENETRATION TEST OTHER�'_ : F n: (Ie0 ID slight,30'drop) TEST? %WATER CONTENT la Surface Elevation: 157.4 l ee t �' Q. o-) �7)ter1 Dr loot III p 7) 1) Il FILL: Indium clinic. silty SAMD D WI= 0' .'t 1-0' Medium dense. ele.n. silty 1AMO ./ II • ugsetcs 7I • .:'t 1-1.1' Still. girt. $111 A clayey S111 .r y• �1 11 • men pl Aat is .u/ chunk! 1 .---- ■ 117 1 1.5-.12' Medium dents. .lo.n slily. 11n1 to 17 01 • \ midium SAND ./lose trn.l , SI • Ilia Still to very Intl. light Olsen. slightly II y= Du• • aN-CA . `clayey SILT. thinly Ismiaslsd At high If' ___-o.sl tsl 1 . r� angles ehllt outings Ij 70 y. •• • IpI - 111 11d1 • Veit still Is hold gist Al l,in.ling Ili • clayey Ally a silly CI It 91nei.111 11Atiul.n end Ali celnllded Ihl Sugheui e/ 17.1 _ • ZB Irvin sell pnitnls .ughaul A rock of 1lII• 10 POC11al7•�'_Z•► •l ROCIy ••••—�_v unknown •lag was encountered at 11I • •"depth of 29 feet. 11I " III Od' •I IN 11 11 • 0 II tar Y ty 19t1ayS• /0 Yr - ~ • V , 101 19.1 pcI Sou • Mato s }1I •• 1 ; t 'ta 11 ]�• II • NI Ss 1 7771j Bottom of Poring Completed3/71/11 roSOUS: 10 • I. poling wade Ar Washington Slut, MINA,., . Depn tment unlit a Molloy stem lllol Itlll rig. 7. lUu dilly /All provided by the rlallugtSI Stile 1110.1y OspllUent. 1. 1111 sto.11ltcition 11,111 en these eu lag . lull 1,llysenl the Aplteu uute Isu.UI lee Autism n tell (yogi. . thy tiuulllion mill. in SACS. e1 111due1. • a. set., level husht t• be lollies et of e/B/i) milling.• r 1• . sol1ng leg pr.phtsd by Sh.nnsn 1011401. _..___-___.._ Inc. • • .•' j i 1 .:gii •+i 4, yi r.,:'. b LEGEND CONSOL Canotidallonpp x_ - I 2.0.D split sperysatwple ' 0 Tria.ialquicl test ` . PROPOSED • U 3'O D IMn•well loan eenrpll Ou Uncoel laud Cetnp.elolan led (tell t P Semple pained S SI•loloot M . BAKER RIDGE TUNNEL 'L�. • Semple IiM retrlllred • C Cr .loot Wotetle.el • OS 6rdnsite*nail� LOG OF BORING E-6 Atl. - erbera Itwrutll Peg Potting �LieMidw�t Sncr Slieleneia. JUNE. 1973 W 1984-02 Nofwol valor ConMM dal Needing .(Noetleuniit i Obsrvationw•ll SHANNON & WILSON. INC. Pleeultwtleplelolmelr .SOIL'MECHANIC'0 FOUNDATION[NOINE[11! FIG. B •• 24 . . • • •� MID 1DATA LABORATORY DATA BOIL DESCRIPTION .' 5 e STANDARD PENETRATION TEST OTItER %WATER CONTENT p, I140 tti e,Np1t 30r d1ep1 TESTS 2. Surface ENrotlptE 134A feet $ S Q.. 10.6 er Te by 0 20 40 60 ()R i MAMA MUIs t dab Mee set11N . ' - T 2 I i •130.4• illdlsu TMIlt1r1111.el ugwltMer sl 4.5 h elm fills. Is Art Mtn.wilt brew hiller 3 I • ... • 4 1 •II1 ry UMtl • MAN 10011: 5 I1D • , �a SS 6 I • • • • l"A 115.4' M • 1� ® I 11 1 . . 9 1 81+� i W Id, deep ts tslrly fig, pis SILT 10 I 102110"e••� - Wobbles WASitar prnurs). .�Hide 11 EP • 0U.3.52 .• • 12 I 108-+A11w4142 • I . 13 ii0 85 —AA • •102.9- - --- 329 14 I • 'Wild, dew. lily CUT eltt Isms el slaws *11*5 Ad 15 1 • silt. •slltptp. 16 I 1 • E.75 • Shot 17. CR1.0 r2 1 • • Silvis 16 T w•n • )6 i • tiles19 1 • • snre .• .869 490. • Safi. dose le hilly dip to M111 11M • 20 1` • • ..'• ell l s11a Mill loll Igerl el slay mil T. • r.. 0ay 1111 sae sssltelM Iles said outings 21 I • • g Me losses. T Aprp 22 ,` OU.114 t, •S . i' '�5 r um ow. 2 3 fiw•tOCG Y lsher M 24 I • elm • r pt..• 2 5 IV i -60 9--- -.--- •Weil 74.0 . . 26 I • 91-- • Mrd• gray tell atl sally TILT iltt t1•rew ' seed I sod Pallets fy ee sea 28 C 77-•�1e .124 • • •L * Isw shoe _ fi Isar M 29 -� lbfir andI 92 'TIP..tits 30 r- 93-A • • end Woe 31 I 115--�• • • . O 32 >r i • 111 •- ...� • Wow. wise le NI. Itss peg MI. 11111011y E 33 1 .Ills. esnslsssl - 34I 07—•^► • .t .._._ ...-- --._ ..... feel .13 __. 111b ai 35 {b 84 --•► • Mlts.el Moles ssepulM I/ll/17 Mill: • ' I. Mt1sg sale by is►IstsM Stets eleses1 SAelleest isles ntey lull Ilg. - 7. lobl1Ul7 lela pulled by 1M bitlytw [till lisp owaltewt. 3. Iss slis1111catlw (less M ties balm Ism ,Nlesut it.apprMlota boundaries MIeSsl MII tyMS: MMA1. Us Iissiltles Mfg Is*bet. M Trowel. • 4. M11s11 ty prep1M by IhsNylbo hats _ ■lgbog lepsltwst. • LEGEND CONDOS. Ce..liNtlsetNI 1 2'0 0 ip111 spw.ntlyle 0 Trissi.l dense tell PROPOSED 11 Y0D min-well l.Wmaple ' Ou UnconflrledCelepswVslee Ind MT. BAKER RIDGE TUNNEL P Tawas weird S Slabs ewe • . ;,°,",,«^� ' Cs tiniest!'~.wry.r LOG OF BORING E-7 . Artirts/s Sinks. ' ' Plc P1rti% . LI.rdIMO s1.01 sl.ssmriws • JUNE 1973 W 1984-02 • No..0.oiler seiner • nv . semi., P1saM tlrll gMr..Oflen.4WIL SON.SHANNON& INC. 1 • • R,..w..rl.pl.swllslar SOIL I1[CNA N ICS i►OU NDAT ION LNG'II[In ' III ws0t4 ytA(tsiAr•s zr•aim Sumo-. 11w Wel unit weight tact) . FIG. B - 26 . It: • rV..,„,,,,: ..... SOIL DESCRIPTION I )n ry ...«STANDARD PENETRATION TESTI oTltrn s '" e; boo lb.o,u a,.5.,mu... TC916 LABORATORY DATA I %WATER CONTENT A..kills 7.Irl ii, _in -4) to Surface Elevollon: Ir.IS rr•..1 ° r•, Still, deep Yrosn SILT+1 W tome o,l.nlc 1 1, • 2 I • - oounll. --'---- 50 1306 3 1 [j. • Nodal.dente to dense. Wily dry to■at Is 4 I l ..----1 • da.0. btu•n so1ry Snap•,Ili ttlttalad cruel 5 Ii • don octtttt .1 Ih,n candy sill Islets. let 6 If • 7 I /► • 5 I _ _ • 1"slit 9 �I III& • Igor 11) I • I « Cobble 11 I • D,y slit 12 I • ' 10f1G Slicks- - 300 11 rr III • tuy atilt. dn.b. V•y El Al .,Ili orlaslun,l Suss, 1.1 ][I• 10•1f14 -- lr.r.l. Sucks 15 I 5W.1040 • Saw silt 16 I - 7S 17 re Iii • C to Slicks tb 1y�P • =117 ... e5`silt Dyg. 19 1 �w•lO;i2 ... • Irma srd Im 470 • ' tell still to mid, damp to !slily dry to • mitt. c,•y SILT.Ith haters el clay end Clay.,a 21 I • clayey slit. slicks rd slit pip. Clara lilt 2"1 IE - I(r claq oily ML ,--. ' .IN sill0 Pt C1U 1 •72 • limas alias 4 L Sw•1(Y�.1 and awe 25 T • i 1"cloy Inge "7e P partings 26 IEll - .596 —•-• ----• -.._ -...------- 76.0 tad taper • Nara, gray SILT and sandy SILT es r ta!wriest 27 •�• nand 1 Sad Iwsn Qpgg g . 291 If srd peal 30 • • :e see tad and Y 31 T l'r • 1"clay Iryu Omte,.ont to set aliermUng Iqus of filly 32 I 90- • 1e• - u I II SASS ant anal SM. Scattered 33 • • ✓ at avel - 34 p Mall pietas _SZ I • of mat __ 35 710 , ✓et • • 211 — 1145 - 36L Bottom el baling completed 4/21/I3 12e MOUS: I. doting made by Washington stela xlgMq Depaet.ent using rotary drill fig. -— 1. L.Solalory data provided by the hashingten Slate Mtghooy Daputoont. • S. the tlrst IT'tttlon 11AS1 an t1111 Miring ' lilt represent the approllSlle boundellll 1. Ell . 1 ,1 typos. , the Iremtllion hay. In fact. Op gimbal. 4 hiring log rimmed by lnhingtes State Mrghny Iuofteast. r LEGEND• CONSOL can.alidalionl.al PROPOSED • I 2.0.D Split spoon sample 0 Mania'quid.,loot • U 3"0D thin-well lubesemple oil Undone teed Compr1SelortIest I lee l i • MT BAKER RIDGE TUNNEL • Sample puoMd 3 Swim tem • Sentpl.mWreo..ared `"epNil LOG OF BORING E-8 ' • _t1 Midler le■N GS Gran aiaa amigo* . AoerWrg lim■Is: ' Pig Palag r� L,•md limit. • SlreN S1,d►/naidoe JUNE 1973 W 1984-02 \L-Na lwol molar cons- /7e Badding . -�PlwueMral 2 oMaavouan wx .SHANNON S WILSON. INC Pnsumolk pMiomeler *OIL MECHANIC$•FOUNDATION LNQINEUI E M WSHD Standard 2" R,nq Sample IW Wat Unit Welgnt(pat) i 3- _ FIG. B- 26 - FlEIA DATA IAEORA10R11 DATA ' ' . SOIL DESCRIPTION QQ STANDARD PENETRATION TEST .. _ ! et W0 1/ 30'4r0P) TESTIST %WATER CONTENT I!i ♦Bore per fool 1'1., w Surface EGvotion: let 3 Ir-e o an 4 �t 41 tip 5. Is•asphalt 11d C to1 I • Nap to Mlit. (l4 tees► IONS 'i 2'I sllgelly clayey with•ecaueeal Irani) I • sow Ills el*resole*atonal. - 4I10 s • 2498 -._ �.__— icy S I ~1a3-CIA • • • Sense. Iatq Is sot Is NISI. Cray and I sen, e L 75-._r► • ,•, till like silty SANO lilt seattuU coarse ; O astorul I' 78 ea, • good sod fill G elars*pes11 and occasional, k•„it s1• 7 ce111e4. 1 8 120 11 •• �r 2 9 t 108—•e. • • • G 10 t 72/I$"--� • •h,.; r-,., Maid 11 [ IV, A • • .- ' -2293 - — - ._—.._ — — --32.0 —13 I 115-•••• : • •.r Eery Ienes, (rao-breve, 'royally Stll 14 I 89—.4 • '.!:,. ask line SAND site Sent tlres, class•sand. _ 15 I 96'y• • {'.` eetestsnsi cobbles (Clam T1114 — --- °} Cobble 40/wally* 1e ! 100 ..• • ''{• 11G1 IIIw -ale r lassos II - 450 ,7 r 75—-• laid le silo still. demo le amt. eltscllau•l owl G IT :.O o at tilt. CIM, aid e::ty CIAO•t th.co,.. /• T ..... , signal grovel end testes II gill send. • 1e IP ' � LCC ~ • 1l•sl lab 19 L '117.1 1�leoerN • cloy 20I 60-- �—— seal • Slit pens. 21 I ' ' Silas d 22 L -• pta. �f70 Silas d r 23 y.P �' ')1. 7.51 - MH silt pip. 24 1 6w.t17.7 • Slide . 79 I • cad - — - -- -' • Seatt.,r 28I • Fowl Or Has 27 I • • sad seam• 90 -_ • when/ T (1 iln el 28 FP `` CH Coyle • coarse sail 29 l 4 highly • rattly dry 30 I * !insured • • . Silas 100 ...-----------'---'- 17ei.titit it 31 I • ROTES: Intel and - Iracoe et IIM I Waren'cads by desttn(ten State alphasy sane 32 I • Ospai tent using telaly drill rig. r silt pIF. 110 rF 7.I3 CH • I. Ultra tell date plighted by Ma Washington Welst dices 34 1 P %w.s11.3 4 Slat.Ni emu, Department. 35I _• • ^- 12(] ----1 7. Inc stratrlrcation Imes so these boron{ Sl tc►s 36 I f • logs repls:ar•t the aspioel.ate bouneants . bei•ren toil Wei. boom'. the transition butts 37 1 1 • ` .at. in fact. 04 psacal. silt pip. 13(� "' 1 ` . •Mow 4 38!P t • 4. Hall u.m ,n near WOOLS alto aYI s sirs slices erd 39 r••n1i. - silt pia 40 I • Slices and 141' ---- S. Oolong log pi•pated by I.thiniten Sills sill pier. • SlleSs ate 41 I. . • ' *ie•••1 p.part•ent. sill DlP• 42 L • . silt pigs. Y�C • C H —.p-17 43 IP Aiis • 3.31 '- - . Silas soot• 44 1 ' rw•io7.1 Grow pent • Slit pip. 451 c. s-----i i•---'-- 970,. S" --183.5 46 I • gal ins al boron'completed 1'75/77 - -_--- ---- I_— 1 — ._. I_-- --L LEGEND CONSOL Contolidoliontest -PROPOSED - 1 2.0.0'phi spoon sample 0 Triaeiol quiet tell II 3-00 thin-wall tuba sample Ou UnCanfinedCaniprnsioiilost Its!) MT. BAKER RIDGE TUNNEL . P Sample pushed S Slake lest • • Sample natreeov*red C Cm'',lost LOG OF BORING E-9 _Q Waistlat•1 OS Goon cafe analysis AM.br.ghmas: Pip Pooling ' --- ! _ L.aodlmll Shell Sllct.neldee JUNE .1973 W 1984-02 ti `--N•isrol role cMMM rr/- Nodding . - -PGple urn.) 0 v obvetlen well - SHANNON \WILSON. INC • • Pniparneilia pisae"1etM MOH. MECHANICS \ FOUNDATION ENGINEERS W W iUH ;1�rx7irC 7 RvIQ Samoa OW Wnt unit weight OM . • FIG. 8 . 27 • .• ft, r FIELD DATA LABORATORY DATA -. .� F SOIL DESCRIPTION t Orr '^ STANDARD PENETRATION TEST f 6., �1-e p i (140 lb nmnylii,30-d'upl °THEN' %WATER CONTENT W �a ♦Blows prt fool I TCSTS • m Surface Elevation; 2C13 7 fiat �' ye ��0 21' an ti`r m _21 4r1 (4) , Atlrhalt Surfacing 1' 1 r - • loons to iris dons. newly Illy In'WV. 2 ', - p hruwt to ar. Ii II Ills sh 111 14411 ai lh 1 I 1 U1/P it. • 'fir • • legal 1st nl Aural gin wins aria. 4 1 1U----.... - -A. - --- •- - -- .- _- .__.--- S 1 •A _ • • Uzz.silt 6 I �'�►_ • • H I A • . 'I I IIU • .• • • SOCkSI 11 I. • - d• rtl�1`r�alond f sid's 12 13C — '7 ---- • . 1 ppl1ltmad 13 I - '•: ••— • wain. 2272 tbbbls Hann lowly dry to damQlay SILT with traces - 3os • 14 3 I M�Ur' ...A • of lint sand, slightly clayey. 4 r was of 15 I - H1-�� • fine sand. - Thin igsts of 16 a P ' ;�t1.263 • .. -214 7,- --'- ----- • - ...t112`_.490 17 I GC - 60. v.'.n4,6 a 1 Hard, burly dry to dahp gray CUT with tr+c.+ 18 I �/ • of silt and sill partings. tilt sip. Slicks 19 It P QU.IO9 • 20.,2 „a), 20 ern— ------- ---y a,a rn --. a. 9 , —• -- Bo Hal of Sot In • Cospltl.d V21/13 1 •DYES: I. Boring male by Washington State Highway . Department using Rotary drill rig. • - 7. Lauoratory data prodded by ins Washington Slats Highway Department. . I. 3. the stratification hues on these baring logs regi esett the approximate boundaries bHwn soul types, hoarser, the transition may, In • i fact, be gradual., 4. Bering log prepared by Washington Stole Hi1M.y Ispsttaint. • • • ,4 • :Z . LEGEND CONSOL ceneoHadNm/eef I 2.0.D.split goon sample : 0 Triatial wick feet -: PROPOSED II ro.D.Ibin-.rolltubsearnple Ou unconfinsd.Ctanpr..sionfest (1ef1 MT. BAKER RIDGE TUNNEL P Sample peened - S Slake less _ • "ample"""°°""'° - ` `"'n a LOG OF BORING E—IO .-V. wow level GS Gran me ondpw ' Alin berg Dante: Pla Poi lag , �--._• Lieu al . Slick SNainsides JUNE 1973 W 1984-02 • \�Natural.roar cenNnl /// Sodding Pianist limit t'i 'obesnpllen well ` + i! i Ptwwmounit ome'« SOIL MECHANICS•FOUNDATIONC. N OIN[[Ri _ _ lfw Wet unit we�M (Oct) 27 t. , . . FIG. B• 28 • • s MELD DATA — , LADORATORY DATA S0 L DESCRIPTION = r:^ STANDARD PENETRATION TEST 0THEq 7L WATER CONTENT of (14:1edopl TfST3 Sutl ce Elevation: 1578Iret E O 211 A10ers per l fia O 20 40 •�. twelve . Milt dry light breve I. 21 • • pquP, Unl Is ct^ta,gnnlly fill +.1 g+ul IW 31 •' • 411Ht1 at 11'1 r mar IIM s'4 I • • 1483— _ ®.5 5I to • <`: g.dse d.Ds, clots.HTljlil�nin ili • and line SANS site scattelsd'says teed bed 6 II P r - • `t:',:. -143.7."-JIM isCUIIL petal (s 2"fey-enptlal- -. —145 7I • i> Is wiry • ' Still wiry sllll, dare, at., CLAI, slightly filet. 0 . B I • silty IN occasional (oily;of clayey tilt, 9I.20 —a •t' u.lsrtd gravel and gunulat of cases send, Slicks , CH ')1A -> occasion/1 oil p+Itio;o and tars louses al Melts 1 'QU la .348 •�• •� ` fins nd. gm bw•1054 12 I1 • 13I 30 • o • flicks 14$P 0U•124 • CH •„�7 , 15 I bw 11Ps"i • Sims • • lrt.2r 16I Silt pig+• 17I 40 —. ---•tom- CH . 18IL P -aU•44tr • l — =:.. 19I aW:n'3 • '/:. ,4r 2111 20I • U/•1 / • ►lg. . ..rt19 1a0— .-_._i• 21I • • *: : Nut, wul to d"p. dltrntUnl Ins silsilty :_;lr ' LL an And clayeySILT.1/occasional bets el �,I y, • '••'' 1 seismic Nelms!. Alt peg. ,:rk 1 I IdL .-I �1 p9 Qu.104 �' . y tl pq3, --6�6 1 1(w.1114 Nod• dMp. stet snt blame Sill. illgully • .) elem. ott scellend sterol, Iles send flick,. 251 partings bed sllcktntlilt. Seel Pigs. 70 - Slids 26I • , 41s Slit • pig' • 27I • —778 • -- H00 80 --r= Dens.. Mist s dry. Its.n flea SAID slightly 26 R P / • sill, Io larsly clean; ./s4stlotd 'feel to 29I AC • . • . II"Sub-engulst. Dry 301 H(1I1�r •' 90 -----.. --- . ---- • I 31I 4 38/10'-.3 • ' 32I 7B-.4 • 100 33i P • lettered WA 3/X. 90 • lapin it silt 110 ' • -. 351 • ' .—--- 115 y 42.8 ---- 36x 94/6—.i •Dense, dry le rout to wet. light brown liarm r j sully SAND with scalsnd lens gn,t1 MO YO .silo. le cons send. slily clean. 371 P • 2'to rl me. 3 Bt 101)-'+.4 • • to mated S 130 — - t� 39I Ili .4 • r. n 401 1 _.• • 140 q . . _..--142 BU 41I tettow of Daring Completed 4/11/13 NOIIS: I thorny.ands be t.thingno %Ial•Nieves, . Ursa,1.eu1 kiting Doter, drill rig. 1 Ia'mr.rlort data prod did bi the estht.Dlon _-__-_._1 ._.... ._ State Nieheey Department. J. Ins tllylrlitallon Imes Oh those boring logs ' represent the approu•ale bound bastion • soil Ryes, however, the giant'lion ray, In _---_--' ,ta ,. .. u, be gnouel. —'� -- LEGEND' eosin( leg prspared by •ainlnilon Stale highway D.plrt.set. e• CONSOL Contolidafianteel PROPOSED `• 1 2.00 split'peon sample 0 '1r io.al wick test n 3'OD thin-wall tube sample Ou Widen,MedCalnpree.ltetest war MT. BAKER RIDGE TUNNEL - P Semple pushed S Stoke led; . • Sam°'' aratord `"epfil LOG OF BORING -II _IL NovoIa.H GS Groin site ondpek I Altar berg muss Pig Par ling ' ,��`rt N�°uiinui.rconwrr Slick Shcheneidee JUNE 1973 W 1984-02 - • Plostre limit /// Bdding '. p Dw..ation wll SHANNON &WILSON, ;NC. e pistemeeer TOIL MECHANICS• FOUNDATION ENGI NEERS ,IIIwaalSt, ard2.."Sple +/ Wetunitweed ImI) Iry.,,;, . FIG. B 29 l"4 -. _._— •— --- : 4v, .„ { • IliF • yt'ri�0.�•. FIELD DATA y1 LABORATORY DATA y `'; SOIL DESCRIPTION _' 9Qc. W >C STANDARD PENETRATION TESTI OTH( r g !Li, 5F p (140 lb.eight,30•dtool TESTS X.WATER CONTENT W ga A,Blows per tool W Syriac* Elevation: 155 3 teen • u; X~4 •• i4 Q 29 4� Uy liti n donee to Cents, moist,light Brun SILT .L �4 •• and Ilne ;AND with scattered gravel and cuts. • • sena. slightly silty (ticinrlt of I" line). 3 I --- •� • • *y;'• 1i63 aril,aw...i ei e,o.naHod--- 'tti1 70 4I - • :?•:.• 146.3--.. _P.- I-- I.11.115 ------�90 51 1� - t r. hard, gw0 Itght elven changing to gray al 11' 6 7 V • 'if„, . i• . g Iy line silly SAMD. 7 1 9 9 • "+ H bl/6 ,.l: • 10= 72/6--: • 11 i • ,2 1 P• • 13 I • - � - • • y7 1238-^ - .. ... .. .-Slicks 315 14I !N' • . Hold, damp to tat111 dry. gray CI►I with D• Slit • usttered tine to coatis sand and tin. gravel. olio 15I - • CH 2 Slicks 16I P CU.369 '•'-1'"-" � ' 17I4• b N4067 • - --'I '. - 18., •U.440 `--- MN - t • 19 I )I w.1�3 • 20I • e Illy gunny 21.1 P Fine eyed 22I • • Isms --ti610 .• • 9a3' • } said. tailly dry, tray SILL, slightly clayey 24y 84- U. )}N.4 6b8.6 • • tine and 1 251 68 • BA8 - Silt•• • --1705 7* 1 Kiln, chop to Hilly Out light careen SRI ./ 262 P 1•U 2.14 • ncc.tronal line grarel, scatteied patting,of 27I Iw4123 . • tins sane. 281 H 1 • , 111w sand 291 60 • Imo. �H60 .'. 69 5 .. 30I 94/B'.- • Dense, tally dr1, light biotin lint S►ND. 9* singntiy sully I/occasional thin silt . w409 B 100- f I"Iryel acid. log • to coasts 33I sent Y'Sill 1•11 i layer.3" MI / • Sllt •Igor — 351 '11NE •• 11e 361 � ;,..,?..„. . .. _ .,,. . 37I • .•,..... a 12* ..•17•i'`; C 381 107" • ';. P Iryv i ' my line ' 176 5— • lardy tilt }3 I 11.1 ',• Oran., •nl, Ilghl biotin. claw 11 to slut to, ''i._ lately(Icon, (saute la luny:,ANO. i . NN' •I1 1 /4 • `..gfi .. _... .. ... .. ._.._ 1413 -a2 I ti>i/r 1"l1 ;zt t,,.,i lone•Of .sting `;$t': CsNsad 1/1)/1) i' ..;i , e0TL3: 1. Doting made by dethlflgton Stale Mightily Dspsrtmsnt -Jx using Rotary drill rig. • Z'i;• 3. Laboratory data provided by the Iubinttet Nightie,deportment. • • 3, The stratification tuns on taste Sprint lets i,pr5snt the approsuuate bdendainit D1S1I1R sail tips. . the nonillion ma,. ill tact. le gradual: • — e. der ling lee etiaalnd h1 I.shrngton Stilt Sipes, Piper tun!. • LEGEND i i, CONSOL' Consolidation tell • z PROPOSED I 2.00 split spoon simply 0 : Tnosial gulch test n 3-00 thin-.ell tube adman Go : UncontinedCsmprretontell (1st) MT. BAKER RIDGE TUNNEL • ".'- P Sample pushed S Slake test ,, • Sompis not r*c euIid C Coup test LOG 0 F BORING _, ;uyr s. t Woter Iwo OS Grain sin w onal,e .{F, Ails.bop lures: Pig Porting• . t_Iget*hmie Slick stiekensidt. JUNE 1973 W 1984-02 • \ti—Notwal woler tonbM /// Nddin* • PIeNm hall • h Observation Moll i Prtiiummtcpi.tomela SHANNON a WILSON. INC. S • $ WSDH Standard 2"Ring`.amp* 'w.: Wet unit weight (pat) SOIL MECHANICS IS FOUNDATION LNOINELR$ 29 .r FIG. B- 30 • " i - g ...•.. .. FlEU3 DATA : LABORATDRY DATA ' S01L DESCR1PTIDN ' .. _ STANDARD PENETRATION TEST OTHEfI • 040 lb aiewtir,w'aail TESTS 1L WATER DONTENT ...;.°•..- �� - •Mows Poe tiff f� (1 2fl' an [>.e. I I Surloq Eye otlolk Wiryte i4 • 0 1 • • 12o U toots, WWII. sellstir MA INTOlagp 2 1 • \alwic utaslil ed sultan'flu t1 / 3' I • curd grants ed u_Mles.: _ .Issuer dons to I 1 Sell Ili t�1�g elte ' 4 11C ' • .`�:: tin le writ NII oiblle e-aitaaY S I � iwa33 3 pssa ►ag . It ati% . aep4 t. taw sandy.at ay*w SILT el is..toot. •_._ __ 44.5 .w a OL: ,� MH 10f!S--• • - � �— e I P 33® --� Sari still le Nil. tray CLAY with sottord 891 j ?w.338 • lie• la ravels sad silty elgN10 1 • . 35.6 tut. 11 Ix • 12 1 • • ill 1.. - 13 CI, 'W.1.7E1 • .L..__..—2a a bw.11211 • Poly still U hold ell,elgq SILT sills - 14 1. 11ate1 el awed so • d gravel. l:r r- • —34p 16 I ti•t • *� • flVl)- 3G ) 201 t . Said, erne flit 1eU1NNN with lalus d1 Ill tilted • . least%al silty Iles to lilies iuully toad . $1 and sandy silt ells scatters/ Isesss of tray • at 11' 20 I4o • /hits ' clay. ve u la tlswlal sad tilted Nlllel sod •' slick slags w the clay gooses. Slices K= 1o3-.w 2a4D7 • Pr lapr 23 I 77—e* • • dry st1i1 ?-s to lain 24 I •• 100—� • y; • saws Nit 25 16a 12A— A • • 600- --0630 • Psi Neu. Pow silly SANS pith scallaiSd 26 a 12 i$h -- • ' oils lassos aid bog llaelal 1oddleg. • 213.I 165- .41 29 I80 ra^O - - 14 •I11. -- - alp rags . slat. IAN sill 1•yue/1 1r666. p t 117 -.J • out seaUuul Naa nM *1/I mod 11/ 1661 - • .nag iuu•ed nos sl nun paela hello ]> I -'— I ealal Sadist a IN still sI Hand silt. t 33'13° 12516••-"41 • 34 1 125f5 4 • - -123 — 110.7 0 35 zt3 1f`— I • settee ei Iberia'wglatd s/11/1l• wits: I s I. winks hIalelba Stela Kiehl." 4 I wMl14441'slag wash Ws Pati.d, —1 7. I NeMMai dataireellal ha Ho 0osh11elii Sla 1-4 ION h Il.N Iqudael. - - • I. las IIrIIIUulIa1 in.'s ea lass*Nll•i I I loft itDi iaMl lM*gglDawela D*wMallaa 1,1.1n sill ss.ea: eaNwa, Ill luans.IIN .- - - - •� f dew. 1. Iss1. 1i goodwill. I. trH*n5Mr 1'nag V•041e1 IS tell 5. Soling lot grape/by eallunlbn Usti I e1111.11 wgartwat. { 1 III . I I I f - i LEGEND CONSOL C.1*.Ndeli«.NM PROPOSED 1 2"n 11*Phi seormeemple 0 1rw.eul!pooch NW ' n Tot)rh.n-.o111wrsample Ou uriconlin.ecomel..awN+ 11.r1 MT. BAKER RIDGE TUNNEL P Semple pwelasel S Slob NM War l eM..oa..re4 C �rroan»'e1�yel, LOG OF BORING E-13 s War loyal M11.Nrel.meie Psi Parley Slick Sicbine 4ee INtWlelMweltcer+ JUNE 1973 W 1984 02 g* re • -- Moshe Need Sarwri well ` SHANNON El WILSON, INC t y�e«1rMk11aae1eei« .•OIL YECNANIC!S FOUNDATION [NQ1N�l115 M WSDH Standard 2"king Slamole 1Iw Wet unit weiOlA (pc ) FIG. B- 31...... f>F FlELO DATA 1- LABORATORY DATA a7_` SOIL DESCRIPTION w rn STANDARD PENETRATION TEST' "• N: S oTnEw S u UeR lb ENE RA.TIOa !fa WATER CONTENT I TESTS mSurface Elevation: 129 1 feet !I- §; tt:0 A lows pH(pal 51? 0 20 40 5 SIrll. blob. und► Silt ./ttullafad pulls, • I 1 • . Cobbles lad arsenic.atonal. 2 I • 1241 "vet► Siiii, elolri el-if " --- ^� 3 I • • uvf: : 1221 • ---noon._ 70 4 I • ,•• •. Dense to eery dente. bran. Ions to Cater. 0, c� I1C • • .. silty, grimily S►N0./scattered silt hens. 6 I • cobbles And hdnronul bedding. �,-• • . -� 7 I 62—" • • beetles a I 64-+J • __ 20 Pu 1Lo 6 I2�—" i n,/6 0- • 10 I .• • 11 I •:.." • t'l I r.();;i.► • (Ka t - .30() 13 w 113()— . . • vely laid. Cray CLV? and SII I ./ttatluid 14.�. • • line to coats. Surat. 15 F'd 11 4 �- C-~ 16= A • :. _ •Slid, 19 p�q S C 'ill/1(;' • • Wald pay to 01o.n SILT./srattared trawls 20 I K •• • — and holi/sntal b.ddrng. '1 will _ ._ _ e" I• l,,I __._.__- .____--r .7oo .-A • /..1 'r•1(1 • lei, dame, 11a.11 volt 114. lb t111:e turd► • 2.1 I SILT •/scalletsd ',orals and ciel packets. A TbC S( •N•Og5 r 126 U 4540 Very dense. pll. slightly silty fins to Cawraa 26 I 1Q(t • SAND./scattered plvels to I" mod tilt lSnsat 0'c ' ......-..... 594-.._.._ - ---- 59.7 27I7C 125-� • •1. rail dente, pay to brown silt► line SANG 0' EEE 26« 29I80 -r7?-4.4. • S... 30 1 r 11•Ip r•....• • ..q r, - -_... 810 Wily aeon, blown lint sandy SILT with rusty D'_ 31 ISO 1li,'9-."6 • stains and h.rlronlol bedding. .42 I I s:,-n• S • • -311 -- —' - 9B0 33'TJC ..n r1..i. • • ver► dents, Cray to brown.ccauonitll tilt►.; IS' fill l . • Isla to.Dater.SAND r/tNlUtsd till IehHs • loq/ta—� , • and berlwntal.bdl 0_Hailing. • 34I '•`rr` =TIC 111,. -- A • -IN3. . .. - .- • noon.__.110.E .3'J ;4:'4• SAIIA..t laving(110.1)Depleted 4/12/72 ' r ' NOTTS: 1. Soling node by/athinglon Stoll Nlghny•sprba.t 'a using lash lort lathed. 3 1. Labeuluy data pru.unad by IN Hilo011e. . r { NIth11►°eperl.anl. • 1. the tlralilicatun linos en these bring logs • llp.tont 1b, opprloi.ele bounlailae I.tioan , tell 1rlles. . the oo i000tIII fly,1. . ——..—'.— fact. ee 4. Ni lery line Ss.plat I1,11 21.1 1e. . • '1 ' lii S. bring log preened by Yoshi N ihail°spotlesst. '-`t;.. • ' • • a LEGEND • CONSOL Consolidation test • ' I 2-O.D sold spoon sample 0 i Tria.ialquich test PROPOSED II 3"00 thin-wall lull sample Ou Unconfined C(impressanlesl (lot) . MT. BAKER RIDGE TUNNEL P Sample pushed S Sleets feel Sample not ""v"•41 ` cl�°tat LOG OF BORING E-I4 .Y WOUr level OS Oran site analysis 'aP AINr Meg Irons.: Pea Peeling • 0'2 "s. ' 1��r Llauannrt el+cr !ud►ensiw, • DUNE 1973 W 1984-02 • S' \_Noiwol ruler content /I/ MMrhp • Plastic hunt OSSgrvatlen well Pr,ssi.,etkpleeomaler SHANNON et WILSON, INC. Ill NSM1 Sa1:ar(: 2"Ring Sample Yw Wet unit weight (pct) SOIL MECHANICS•/OUNDATION INOINE1111 41 al 3- 3 FIG. 8-32 - ! I • .. . FIELD.DATA .. LABORATORY DATA SOIL DE 3CRRRION =. .f srANOARo vEr T3A) rEef 'g'i Y1�0 14®eel gll�!0'Wp1. OTMEII X WATER CONTENT • w Surface Elevation. 157.7 fret . ; '3-* ?1h`ON 1og1 • �,TLITiO. M V 4Q r • 1°tlfuull tel inning.del SAKI. Oodles Nlfl • . • -15- —diem silty CIA/Y/IUIUrM Viol.- 3.e •n; ' loos. Is medium/.,te,dry•Mt. 1101 •i 3 I • •. • .`,.. Ira... edgy. brae is teem SANS pith rest • 1 I • ..- 'sum B I •• „ 9 :( •• 1J llo • — �• lily still to hafd• deed to fsirl7 dee step '' 11 I P 1 .,♦,- .CM a CLAY.1 ,./W fin. to 12 I • travel. Melt • 13 I• • - • ., ' A w30 QU•t56 • • s bw.120.7 y`u AI.lilt 17 I • ; Ith 17 I. toff !IM • .,K..^, oenl It's 16 I4Q 1 • 't:: • nd nemces ....... �. QU.1.82 •• :% i ,114 --_ - _ u—�'—1—' ,aa.o • 20 I • 1{w.1100 •• �`k I Mud, Ory is dw Ire1 CLAY eed SILT✓ 21 I. • •:' esostsensi ps11l. W sstl1Nw Ilea seed 'Y ;.A 1 - , •• ,-.0 looses. `� ((--�� M .- 8(7 P .Ill..... • r m i- r • 'emsi -550 T •.;f • maid. doe Is deep. Ifs/Ili; ./a 11. I'. CI 34n•L 1.1 • 60 • fllsts 25 I %7 •J • • -90 2 Nerd.owl.B4 non,/teN:I%gruel la Tan ir+wlet. e7e 2� .goat Need ewe maptleegl.t le Him SILT.sth seed T7 r70 61-e. .�0 7 'r lope's to I/1'tad Iless if gravel to 3/4' ,1•flee • _ teed 14• 28I 92� a -Be 7-S- . . ._ 75O UM.Dons. fairlygray1andknee 765 29I 96 y.• • Belliesel hems(11.I') Ba Cwlel./a/11/1/ • . • NTIS:. I. tering.eee be hWsgtte Itete Neshsep Npfteset ems Situp grill rag. • I. l.Nveurf tete preview el the taselgttla Stet, . Ni iuo,D.lardeM. • 3. The siratMeanie Uses en t.tee esrleg legs nerestnl the .Nfeel.atl Mwd/rlss eelMN sell • heeveN, the IIYnlltlen wee, ii lest. N glided. 4. 1 Ire.twles 3.11..N II. 1 Online lee efee.red ee billegien State - Nlgh..e egret tweet. Ht • . I • . LEGEND CONSOI. Coneolidofi,Nlest . I 2.0 D spl.l sperm sample 0 Tr.on.ol quic hal . PROPOSED U. 3'00 thin-•olllobe sample 0.. UnconfinedCeYyewwll..e.Oer) MT BAKER RIDGE TUNNEL - P Somple peened S Slo4 feel • • Sampl MOmiao"ed C Creep LOG OF BORING E-I5.¢ Weissie.el GS Osten use eneItNe"' M41 bets Lora P1. PNfNIg �4s,..-�---Nub.l•91N..MIM11 d WWI '///` al .' DUNE 1973 W W. ItlB4-02 .. — PNehc LINII 8 ON�MIiM wed . i PnwlYefiepin,lh.w S1/ANNON a WILSON, INC • ETC Ni' S()r Stallard ?'Ring Sample llw 'Vert ur4t view (pcf) •OIL MECHANICS•FOUNDATION [MOIN[[1pi • FIG. 8 - 33 «w,. r. r;j. • yi+ FIELD 0111 I 1 Alf(1kAlORY UAIA " 1�- I STANDARD T'[HLIRAII(1N H... SOIL DESCRIPTION I, (Ili Ik. n.)n1, )u a..11 • 0111111 ! I••,'•�I ui:: SN0.1iW tMONT I::. • Ilr.. nr. larl -• Sutlelr 114rrlltn' 211.1 tall i•' I -�u 0 70 /d coil I - 19 40 _4 yrl, •It..•.r, Ns....., •III• Iln. 1.• ..11.l• :.A\II, 9 I. • ....... ..w,I ..n.I Illlr rl.yrl ,(I.I Al IAI 111.IyI II. �= ® • 7.2 r. 177 • I t 1 ' F. 19. I ,,, i . • 11- • 11 I..- 113--i • I Z I 115 • 11 I 70- • I • • -a I •(II 0 II7 • h'I 119, • Il,l•:.r In %el, deh:.I', Pl..eh In I'faY-I.rl.th, �1111. i Ili ! .vl • • floe I., roar,. NANO; Si ill,-Ird I•ravel. I• 17 L i "I )I •\. • I I Vet, sun If to hard, gra,, claw% sill; generally ' •,a 1 I i ! • tAsu,e; trace silt or clay laminations; trace ,II I I I • grasel; trace slickensidea. j I . 11 T I I Iix • • III I d I I • 70X SO 1 • 11I �` � I j • 77I • 251 4 • • tali 10• • III • , • Ism, • III • . • . 21II► - II- -_ --,._r .. -- -- 61 • 711 .. d • III i At • al Tr! II Very stuff to hard, gray, claiey SILT to allty 22II� CIAO; generally .saline; trace lenata of fine "7JJ ,`% sand; Ounce ; trace alirkenmidel. 34iIFy// j '✓ Y 311 -- ' - - ----- • IIIII 11 • I' - 7 = •--FDAIMZC AGEEDEANT 11r • 1 1III 04 FT. l Qa-1.20 TSF 1--•-•••— -t-- 1 4 tll----'-- ..� I, - I: .) pl • 1 • --1LLI - • !i_ + • 14[II I ...L. 1st ►.. .�....._CN 1 ly II ./ I.11 •1 ‘/Sj J`I • 11 • 41 • • 10 1 • ,y ; f. • I • ;p'`, a 171 SIIIF • tArs% attic to Paid. cru. suite "AV/ lauoaled SI ,>• _ -_- _ -•_ - , • .• � • ',IA fltyta 4111 and fine sasA• 61 I • '51 I1 • i 14.-. cH • 1?A 'I7 r Vs•+.1T 1SF --♦ - i- / • ca,. 63 I s� . 1:..1 p•I • vk 141 1Va./.o7 151 ►-�•'�.• i• • III • I 111 .- ..-- -' - - . . ..._... ISI �I P ISI - •��--- �. .---'--r♦ CI ,, Nerd. Irtt%• alive% S111. la1rra of sully clay 1717f "�•� • • and mi lty, tine to section; sand; laalnattd to 1 • saaalne. 1A� Ili- • _ 11 • - I3TE N,IIIiN(: LtlN1111.1.1)ON Nsni 1'AGL Vie' III SIRAIIIICAIION liltS 1TPAIS(IT TN( APPIIII1111 • 0 NOIINO11111 1111IIN +011 ITPIS AND IN( Milli VIII • -4 IAT II SIA11Al LIGEKI PROPOSED V, Ill.1. 9111 Olin tnlNt K II 1' 1.1. 111a-tall lab. 100014 _ Iiats.lr. 11141 MT. BAKER RIDGE TUNNEL -.Iv -= lt•1 motor ' I 4F Ia.I1 I.t1.I a -I.th t 1.I.1 LOG OF BORING TI'I—I t mi arsle atl /I11eM I . .allal0l 11111t: -IAurnit ion nil II • u 1- 4 -•11I11I (tall II MARCH I980 W 3,a'3-03 - `_ •NUtr if ttitt ttmieat la. • Nn.....111....1 ,.wpu•..lon Ieal; Ira SHANNON I ill SON. I. •••It .•111(I, p41 • •?Iaatte 11t11 .n 11wv. Nl r•N pIn.11111V IIIIICNNICI1 1IN11111- • ,-, •f4 -_•• NI N111, 1.•- 1•I tut l•11v • 33 'ff SHEET 1 OF 2 FIG. B-34 ;1. i • 'f i I -• fELD DATA LABOGATEDI DATA . _ _• • SOIL DESCRIWTIDN t.... .•1.• I STAICARDIE18TRATION •TEST c (LS1 11. n11a1, 71• ses/) •"." %iA1LR CONTENT 5,. • _' . . ---:' •Ilan psi ®oat „ 11/11 7t a1 /�, •� 1/11• 1711.. . _ __.._.� I •.. _ .. . lip; st 11 11/..-•1• ... 1711 Ill'IV'-+M i •• __ six ! III • I nt er Redd ld. 1erY dense, Rny, ullt, fine SAND and Illf 17/ • • ,^. • hero. Rest. cletey SILL and sandy SILl. ....�I• -`+.' IYen dense. Rrat. slightly silty. line SAND: 111= --� 7f/ I • "�• i lenses of clam salt; Irate ■ediva to costae Sand. I 1171 Be I1l:--J Fi •: • 71.1 - - - -- - -- ---_-_- 111 11 I_.T • ."" 1 -' Iath1011 oY INfiNi: tio7.I lieu onf., - 710 4 MOILS: • I. BONING MAbL BY VAsoINGION SIAII DtPANlMLNI trf liANSPONIATIUN INSDOT) USING A I.:U(I. YduNIlil MOIJIL MOINI 0-41 DNIll 1114 AND A'4.1NCH I.D. HOLLOW STi.n AUGER. % ; i. 4UNIA4 !O4 I. HASID ON IIIIU LUuS by WSW' AND LAPONATONY DLSLNIPTlONS RY h-J ,w44 SHAANON a WILSON. INC. "'"% NIL ;Iil1TIIILATIUN LifLS UN IHLSt BONING LOGS NiYNtSuNI THE APPROXiIOAK ROUND- •':4?. • Ai,ICS RLINLIN SOIL TYPES. HONLYLN. IHL TMANSITION MAY. IN FACT. a 4MADUAL. • • t • • • • • LL . 1 7' 1.1. ullt inn soapier PROPOs • 11 7' 1.1. tale-sell teas 1e.o1e ' leatenite soil' I 1.bSl+teen impels, MT. BAKER RIDGE TUNNEL . C Is.pls posited Y?` Ulet level - • • Seep!' unwired I LOG OF BORING TH— • alteasaro !lasts: } uiu lea .all et - I—•--�- 4 'liSuld Ilplt J rluster MARCH I980 W 3573-03 -- 'eater Content W RKnnfined tompeettlon test. l•! 1 e„ • pet,nnll right'. ptl -------plettic Halt CH • Clay. high pla•tatllr SHANYCN L tit.t(hl. •:Nr: i MI. • Sill, Tor plot tl.11y 1r11ICPIICIL CSUISIT$ulf . SIP.I:I , rt, , FIG. B-34 • .x ";rc FIELD DATA L►BORAi(1RY 0►1► -----� `y • - ~I STA1mAR0 PEta_iRATTO1 TEST SOIL DESCRIPTI01( =I orals / (IA0 I1. allot, 10• nisi) hilt C LATER CONTINI Ileeelu•; 777.1 Ifet �Fw:- •Ileac 1u Iset —_"_ ._...--- —' -- —... . r.rj`\J 11--•- l Ild_._ - f. 10. .11 t.e• Inns.. uio.n. loll). fine SAND; h ell ' 1 .1 • •rdlu• in chiral nand. fine in Cs.,.. 7ra0rl. II All. -----. • 11 and n11•fllfa / 7 1. j Sri. dross. 61n.n. . 1111e Mali. leas, , , - ...lino Iu (oaf. sand and tau, In foal.. aS 11 • leis., or rl•)r) sill end 1111n11V !I - a1 •-•. , . ' aellr 11n. sand 11.Ia41a1 1111) I• a7 .• 1�r • 1I 10 . • Orris,. gray-nn..n. 01111 ion, SOD; II • i e rrdeua to coarse sand and tlarrl II 0 • _ I11.l—•- ••- ..21 10I. 1 firms alit.. 1Ja,• 'lairs N111 Id slits ''LAY; _. - - . . - Itior sand and r11sn1. sill ya111nfA; stalarnud,o 11 I I • i • I7]'�('171e JIII : • .-.—..� 11 i 1 } • 11• . 4 • .. till I • 71 27 ' / • Ta • 111 a 1I 115 I • 7a • Very soli! In 11014. Real. .111% 11A); hire 7171 10 1 • • sand and 1ra•rl. silt parlluga; stllsrnsldrs 21 • - • 10 y • 21 I% i I • 77 • II �- • • • 24 I /e f1—--.._. \ s• 117/ * •• . so ...:' 41 i • • /i • ii • ,� • • u .r • 4141 11------.. -'-- �' --- • -- • •—'---. . A) • 41 15', • • 11 r • Si e • 57. 111 �'--' ' --qu.1.el7Sy. .. - _�� ^_C" •, 1 13 I. • II .: pro • • 11 qu•1.11 1si e,• . CH y 1 . 11 .1/ cl t!, •III. --_-- 111 11 I. 9 • .;gr ten staff to hard. tray. silty CLAY; lenses 7$77 11 I--- • and Is)ers of clayey' silt; trate silt partings; !1 f �� allclenlldla 10 = �` •al • • :te>: • 14 4 • ''ram''' /5 y gV•1.17 TAr /1 e I ' ar . 11 .7 p.f ) - rtl e :Yw. 11 w /' • a I; . ^ 111 _--°— :�- rum I 11 \ •1. 12 I •L I tl.S --- -- tat J1 , 11 ` •i • _.._.—_. Nord. tray. clayey SILT; trace 411t and "11 - A S 1 .,-. silt p ; occasional senses at silty clay 11 1\ rl• ',Y or fine mind; laaf.at,d; 70. s.Qs.4.la TSf a 11 _ 11/JA r - 11 .7 pal • • .g5`'.' 1$11 I !S7!11=•.y • • ".:`(St. p11 111/1•'-.r,• . •• • 11* • h it •—T(1141 wc- utiTOWED' arr-v fEt .-.. ------ --_._. -. . .. II._ _ __ • 1N4 11141iti1A1lo' 111111 /1211191 1111 £PPIIZ11►11 `• 1006045111 111111l 11/11 III 111 1/41111111 ' 1 fel`?', LEW� PIT 11 11111A1 ' ,r.. I 1' 1.1. spilt Isla sampler PROPOSED ''":'; II 1. 1.1. 111..mi11 tau iaa7ta 0 --lalaalto tell MT. BAKER RIDGE TUNNEL • 1, / lat►t.lta a.pl/f ""''"""' • --lettr 1 • LOG OF BORING TH-2A '',."Pc • flails sat 1 • , Atlerborl 111111: +—Ilssnstlus u11 of A- ►--.—a�—t1�.11 II•lt 11 • MARCH • 1980 W 3573-03 --,, . ---11t•ttI situ mistast • SHANNON , WILSON,INC.ING '' W . Unconflnrd'.n•prraalon prat. tel ----ricotta Halt 4. • flirt unit weight. per GEOTECNNIC AL CONSULTANTS rig • Clay. h1Kh plasticity ' ��. - ':'N Ni. - S114. lee plasticity .. • ` FIG. B-35 SHEF:T I OF 2 ! • FIELD DATA '- •- -_LABDRATORY DATA_ SOIL DESCRIPTION • : �:.I:.. SIANDARG PErATRAII TEtf" .„TOLD f WATER CONTENT C • e.,--. (141 It, wlttl. NI' Biel) �p =1e.r• •Slave pet lest 11111 :- 3"� . Il a1---AAL-- P 2 The 41 .*I Y r -------- -____. . --- 7 Is Ill 7/1-.NA ' ylt 131/1I�••J . •--r 11111!_y •l.._... Nord. pray tJsysy 8111; layers and 1 1117 1E 142.-A r W. clean fine to medium 'sad; tncr silt part- : 117'Il'. • . lots: inn her gravel • �� 1/1'' ppITf ,� •�� • - • t11107 tIt SST/ e r .F,;, I i. -41.1 -- - -- '-- —'----._.._......— 1I7117 11/Ir • terl dish,. pray, wipe to coerce SAND; - • lilt tenses and tine (ravel III s 111 11,1•' • _.--•_�---, - 111 • 71.7-----'--- -----'-- ' 111!SIX - lOT701t OP DOMING _—_.. ..__ CUOMO1-7-l0 7I1 ------ - 1 •,:.!''.;.. I NOIESt 1. BORING MADE BY WASHINGTON STATE DEPARTMENT OF TRANSPORTATION USING A TRUCK- - MOUNTED MOBILE MODEL B-61 DRILL RIG AND 4-INCH I.D. HOLLOW STEM AUGEN FOR THE UPPER 40 FEET AND 3.5-INCH TRICONE ROTARY BIT WITH DRILL RI6 FLUID FOR THE REMAINDER OF THE HOLE. 2. BORING LOG IS BASED ON FIELD LOGS BY WSDOT AND LABORATORY DESCRIPTIONS BY SHANNON L WILSON. INC. 3. THE SII:AIIFICATION LINES REPRESENT THE APPROXIMATE BOUNDARIES BETWEEN SOIL i TYPES. HOWEVER. THE TRANSITION MAY. IN FACT. BE GRADUAL. E 1 1 i I I • 1 • t 1 • i a e P, B: WOO PROPOSED ' I 1. 1.8. 14111 uses nsplu A 1' 1.1. ttla-ea11 tole eeelle Isatsatta sell MT. BAKER RIDGE TUNNEL II Itttttatom sample( Il.ale p.la.d yMel level LOG OF BORING TH-2A • Ieaplt e111 -Oalarratlaa eels Si , 1 • -4••• Miele 'WI ►lelsealel MARCH 1980 W 3573-03 . \ I . . OTLCHNICAL CONSULTANTS � ----tlatttt Hell I • ref will wee hl, pit ' IH Cloy. hl:l, T .•1cr 1 MI tills. I.• r•1,.I11ll) I ---- --- — — —01 2 S __—FIG. B-35 NF,t 1 'l ---1 I • • • Est. Surface Elevation 212 feet • 80' • SAND and Drove 15 min. Blue.CLAY hurne 30 min Small GRAVEL ater opt at YO ft. • ose .tt. in m n. ose n m n. Drone 15 min. Role t. n m n. SZ 10' • 90' SAND and Drove 35 min. Churned 20 min. • Small GRAVEL {dater 2T1 st at 100 ft. with Small Rose 2b ft. in 45 min. Amount of Rose 26 ft. in 2 hrs. 20 100' Hard Pan Drove 12C min. Churned 15 min. • • Water Test at 110 ft. Rose 922 ft. in 16 hrs. Drove 120 min- --Blasted 30' --Blasted • 11• Blue CLAY ' Drove 35 min. Churned 25 min. Water lest at 125 ft. • Rose 50 ft. in 60 min. Rose 51.5 ft. in 65 min. 40 Churned 15 min. Bottom of boring - 125 ft. • 50' NOTES: Boulder Drove 5 min. —a 1) These boring logs are redrawn Drove 30 min. from driller's logs prepared by State Department of Highways circa 1937. 2) The stratification lines represent 60 the approximate boundaries between soil types and the transition ggl1ue C�Y Churned 25 min may be gradual. With.White Water T st at 70 ft Partings' Rose 2t. in 11 5 mi n.' Hole Diameter i ft. . • • 70' • Blue CLAY Churned 15 min. p WaterS �t.T st at 30 ft. Rose n 0 min. Rose 7.5 ft. in 60 min. • PROPOSED .MT. BAKER RIDGE TUNNEL 2A • LOG OF BORING T - 1 JUNE. 1981 W 3573-04 SHANNON d.WILSON, INC. a[GIICNLIICAI COMILTANIS rj FIG. B - 36 • 1 i, • • Est. Surface Elevation 147 feet {' I ��mm Dtt RA0ELeand • Drove 30 min. `I •• Brown CLAY 6' Brown tY Drove 60 min. %,Wate tRAVEL a ?Over 11' • -`�e� Brown CLAY Drove 30 min. •f'CRAO., nnndddd,fa ir.LAY 17' ` ag E a Blue CLAY Drove 170 min. 20' B1 a CLAY Churned 30 min. Come 11 GRAVEL Water Test at 30' ft. Gray 5 Rose 2 in. in 30 min. 30' Churned 30 min Blue Water Test at 40 ft. ' Rose 5.d ft. in 10 min. Rose 6 ft. in 30 min. • 40' Blue CLAY Churned 30 min Water Test at 30 ft. ose 1.5 ft. in 10 min. • NOTES: • 1) These boring logs are redrawn Sc' from driller's logs prepared by State Brown SAND w Department of Highways circa 1937. and GRAVEL Ch me 1¢Oshows contp act t 5of CLA' and SAND. 2) The stratification lines represent the 55' Water leaks out in SAND. approximate boundaries between soil types and the transition may be gradual. Blue GRAVEL Churned 15 min. an Water leaks out 10' in 60' Q 30 min. Churned 15 min. 64' • aaTo�n CLA�,/�Y Churned 30 min. With SAND Water Teti at 75 f.t. and GRAVEL Rose 1 tt. in min. Rose 15 ft. in 30 min. 70' Bottom of Boring.- 76 ft. PROPOSED MT.BAKER RIDGE TUNNEL LOG OF BORING T - 2 • JUNE. 1981 • W 3573-04 . • • SHANNON&WILSON.INC. NoTECMMCAL COMM IAN S • FIG. B - 37 yr ` i • Esc. Surface Elevation 226 feet pp 80' Water Ro0sem6' in 15 min. Blue CLAY CRise ft.min.30 min. Water Table;, ' __ overnight 10' Q 90' P;F; ed Drove 150 min. horn IC.mt:r-1: "' r Ri08::�'. O/rown se 0 min. CLAY 15� se t. in min. Rise 39 t. in min. e,��yy Drove 150 min. Water ndDGRAVEL Rose 8" in 10 min, 20� 4 ft. in 30 min. • 100 $$ 15 11 11 i cemented Drove Roseml2" in 15 min. Rise t.t.min 30 min. Gravel 30' 110' • Blue CLAY urned 13 min. ater se .6 t.iin 10 in. iQ: t, in 30 mm . Bottom of Boring - 113 ft. zz t. in 60 min. 40' ' - • NOTES: • Churned 20 min. 11Witter Rise 11 i 1) These,boring to s,are redrawn 3l t. in 3S min. from driller's logs prepared by State 35 t. in 60 min. Department of Highways circa 1937. 2) The stratification lines represent 50' the approximate boundaries between soil types and the transition • Churn 0 min. may be 8radual. Rise �j t. in min. s Rise 40 t. in 10 min. : 60' • l�urri r.miTy ae min.Rise . in min. • Rise 50 . in min. 701 • Churn 5 min. Rise Is rt. in ,0 min. . ae t. in 0 mir.. • Ripe 52 ft. in 60 min. PROPOSED MT. BAKER RIDGE TUNNEL 80' LOG OFBORINGT - 3 JUNE, 1981 W 3673-04 SHANNON 6 WILSON, INC. • IIOIICNMnCAL COMWIT 5t$ - FIG. 8- 38 1 • • • Eat. Surface Elevation 174 feet Yellow CLAY Chuned 20 min. • o water 10' Blue CLAY RiurnSA in iOn41n. • 20' Churned 25 min. Rise 8 " in 5 min. • 30' Churned 0 min. Rise 1 ft. in 30 min. • • GRd 40' AVEE1AeECL LIY hhur 20 in. Else' ft. in tellinin. NOTES: Bottom of Boring - 45 ft. 1) These boring�logs are redra.n from drillers logs prepared by State Department of Highways circa 1937. 2) The stratification lines represent the approximate boundaries between soil types and the transition may be gradual. • PROPOSED MT. BAKER RIDGE TUNNEL • • LOG OFBORINGT - 4 • • JUNE, 1981 W 3573-04 • SHANNON&WILSON. INC. CEOTECNIMAI.COMWITAYT! • FIG. B - 39 • • • • Est. Surface Elevation 204feet 80' • BrownGRAVEL Drove 30 min. Blue CLAY Churned 26 min,a and GRAVEL 4' in Rose .8 • Brown SAND Drove. 10 min. i Water Test D• rained out out 1 ft. in 10 0 min. 90 Brown CLAY Drove'27 min. Churned 25 alin and SAND - Water Rose 67 tt. • in 10 min, 30 min. 16' Brown CLAY 19 Drove 5 min. 20 1O0' GRAVEL and Drove S min. SAND 23' Bottom of Boring 102 ft. Blue CLAY Drove 5 min. Drove 5 min; No Water 30' Churned 30 min. • W ter Rose 5.5 ft. in 10 min. • 40' NOTES: Churned 25 min. 1) These bcring logs are redrawn 90ter minRose 18 ft. in from driller's logs prepared by State Department of Highways y State circa 1937 937. 2) The stratification lines represent • 50' • the approximate boundaries between sent soil types and the transition may mien hurne 37 �7n t. be gradual. in 10 min. • x.; 60' chin water rid Rose '3a It. • 0 min. 70' • 'Churned 22 in.' . • int10 mfne 48 ft. • • • • PROPOSED - 80' • MT. BAKER RIDGE TUNNEL 4 ' • LOG OFBORINGT - 13 573-04 JUNE, 1981 ; W 3573-04• SHANNON&WILSON. INC. • ssstac«w,cx conuuun • B-39 FIG. B-- 40 hr Est: Surface Elevation 260 feet ' - 90' • i i 64ND 2' . !; Cta-ented Drove 3 hrs. Water Testat 11000 fit. GRAVEL Rose 6 ft. in 35 min. t ! Rose 21 ft. in 16 hrs. i Blasted at • I. Bft. • 10I 100` • f • Drove 75 min. 102' Blasted at Water "einpap ft. Boulders and Diamond Drilled ! 14ft. Boa f;. win. 105 Drove 85 min. Blue CLAY Churned 35 min. Roserl5dT ef3!t.siitn170yyp Ait n. 20' 110' 4 ft. at 22' • Packed rove 45 min. GRAVEL ater st oof 7 ft. ' Gay and Aga: 4Rose 1 [. inplsiDn, ti• 30' Drove 30 min. 120" 1 I+ 32° Churned 35 min. 1I Cemented ` Drove 60 min • GRAVEL RWater Test at 37 ft. !, Blasted at 37' $D gg se 11fft.litp530imiy. • I; 27 ft. Drove 195 min. I. ' 40 Water T st at 45 ft. 130' Pose 4 t. in min. !' Rose 5 t. in 32 min. Blasted at • 45 47' • • Packed SAND Drove 70 min. and GRAVEL 50' .1401 33 Churned 15 min. ' 56 Drove 4 hrs. S C ted kg:: In 89 fn. e t Ro i,50 ftt. in iTlg asAte�9afr S7a " se t. in rs. ISO • 0 ratLLed Drove 3 hrs. Churned 30 win. Little Blue Lost Water at 165 ft. CLAY 68" Cemented 701 Drove 1 hr. 160' GRAVEL 73' 163' • ;Blue CLAY Churned 1 hr. SAND 165 Water T st at Q0 ft. ose 4 it. in 10 min. soft Blue Churned 5 min. Rose 7 ft. in 50 min. CLAY 80' Churned 35 min. Bottom of Boring 170 ft. to 100' • PROPOSED NOTES: 90' MT.BAKER RIDGE TUNNEL 1) These boring logs are redrawn LOG OF BORING T - 14 from driller'■ logs prepared by State Dei.artment of Highways circa 1937. ' JUNE, 1981 W 3573-04 2) The stratification lines represent • SMANNON b WILSON. INC. the approximate boundaries between MortCN CAL Cawuu+n ' • soil types and the transition may be gradual. FIG. B - 41 • 0) . l",Z`1: • t.. • Est. Surface Elevation 151 feet • • Brown CLAY Drove 30 min. • • /� 7' RA and 9' Drove 10 min. 10' Brown CLAY Drove 20 min. 16' Drove 15 min. • Blue CLAY . 20' Churned 24 min. Water Test at 30 ft. Rose 2 ft. in 10 min. 30' Churned 45 min. . Water Test at 45 ft. Rose 15 ft. in 16 hrs • 40' NOTES: 1) These boring logs ars redrawn from driller's logs prepared by•Stats Bottom of Boring - 45 ft. Department of Highways circa 1937. 2) The stratification lines represent A, the approximate boundaries between soil types and the transition may '.t(. be gradual. . I • • PROPOSED MT. BAKER RIDGE TUNNEL • • .. LOG OF BORING T - 15 JUNE, 1981 . W 3573-04 • SHANNON&WILSON,INC. - S OTiCwnaI cauuuMm FIG. B - 42 Est. Surface Elevation 162 feet Brown CLAY Drove 5 min. • Drove 7 min. 10' 14' • B1Se CLAY Churned 45 min. 20' 30' Churned 30 Ain. Water Test at 40 ft. Rose 6" in 5 min. Rose 1 ft. in 30 min. 40' Churned 25 sin Water Test at 50 ft. Rose 2 ft. in 10 min. MOTES: Rose 2.5 ft. in 30 min. 1) These boring logs are redrawn frog driller's logs prepared by State 50' Department of Highways circa 1937. `Churned 15 rain. 2) The stratification lines represent Water Test at 60 ft. the approximate boundaries between Rose 2 ft. in 10 min. soil types and the transition Rose 2.5 ft. in 30 min. nay be gradual. 60' Churned 15 rein Water Test at 70 ft, Rose 4.5 ft. in 10 min. • Rose 5 ft. in 30 min. 70' SAND and Churned 15 min Small GRAVEL Water Test at 80 ft. Rose 4.5 ft. in 10 min. No water overnight • PROPOSED MT.BAKER RIDGE TUNNEL • Bottom of Boring - 80 ft. ' LOG OF BORING T -16 JUNE, 1981 W 3573-04 • • SHANNON&WILSON.INC. remuaw• arwurn FIG. B- 43 • 0..1 • • • SURFACE ELEVATION 155.7 FEET 0 • • S W N E• S • 2- 4 • • 6 • . g- Brown, silty, fine to medium SANG with gravel 8 • 10-' cobbles sides of hole caving slightly l4 . 16- E- w • • u. 18 • • w _ o 22 LEGEND PST-1 e ® Plate bearing test 24- location and designation Brown iron 26- stained(oxidized Qeon fine to Very peeks') Very dense gray, Brown ion- median very silty, fine to •• 28- Mined SAND medium SAND (o'idiSed with scattered TILL pocks)) grovel and cobbles POT-S 301-� 6.4 p` (Glacial Till) with aeon fine additional features SAND as noted in 32-• Gray,fine graphic lop sandy SILT • 34- PROPOSED • • MT. BAKER RIDGE TUNNEL 36- MAP OF TEST • . SHAFT TS- I 38- • OCTOBER 1971 W 1984-01' MAP CONTINUED ON NEXT PAGE SHANNON WILSON INC. GEOTECNNICAL CONSULTANTS • SNEET I Of S FIG. B-44 • •YE 38 S W N E S .. '� Wry dense.pray.wry silty,floe to Ae. ' -r -. medium SAND with scattered :• E'.•' •"-,.. `• prowl (TILL) '`►7 i` • 40- f.:�;.1,.- `0:, Highly• sllekamided = :- h.. tton. bob. contact %•:� 42 �'�• ." • ' - 44 Slickensided postal 46- porellal to shaft :'5;.• • cueumleretwa Gray sandy CLAY with :" . 48- / silckensidssitop a bottom Hord• gray. silty Ar x.. _ice. ... -�_ CLAY with some ¢; Wiz-- scattered grovel; . - • ®PST-2 massive,slickensided, . .: 50 -.:. Darker CLAY trace of white silt ai'r.: • stringers with • 52, Fine sand lane additional features as noted in graphic log ' 54- f- Ton silty CLAY W Sill stringer 1 Sill stringer-, ~ 7- . Ton sandy CLAY Z • 58 Ton silty CLAY • • • Brown,silty fine to come 60-G-J°a `_~ SAND (Decomposed)-\ LEGEND ter-1 Sall-..N____... TQn�� ® Plate bearing test 62 .------ ' 4 location and designation Hord Ion SILT Hord, ton, silty CLAY in fine sand • with Iroce of sand and Silly sand • 64" Gray CLAY occasional thin gray Gray CLAY streaks with additional (.—��� ) an silly CLAY tt� features as noted in 1'� �3 se,r graphic log • �,. Irregular pieces of ,---7--3hard Ian SILT In 68" -i S`J R mauls el fine SAND . <�( � aroy SILT n(\ \�(� U 7Q• ��f , 7 V Ton CLAY' • �,-- --:�b err--`�•-��_.-.--_-- Hard, ton,slightly clayey };!, .`l C•:-,Decomposed`-�'�'"` p y y ( to fine sandy SILT with :>. Bond a Grar SILT with ion 1 some scattered grovel . 72 4> grovel w'I lover iron-stained with 0(--- cobbles additional features os PROPOSED. • /SILT CAL noted in graphic log MT. BAKER RIDGE TUNNEL 74 Silty sand boy,silty to clean,flies '•'-' sue• _SAND decamp _R MAP OF TEST • - • ..._.- •)1II.+ SHAFT TS- • 76_`_ 9-_ —•••---__ OCTOBER 1971' W 1984-01 • 1 1 • Gray SILT-C.;- ------=._`_ ( 1 t ') SHANNON IS WIL SON INC - . ✓ - -, ,• - W 01I.CIwie Al C°N&LDINTS MAP CONTINUED ON. NEXT PAGE 5,4c7 a of s ;s _FIG. B-44 ;_.• • 1 , ks 7 •i->s • 78 S W N E • S • Very�5�--�.�. Gray,line SAND • -' - brown-gray -�._ 111 80- s.tly gravelly line Sond-Till texture TILL TEXTU- r. To^• ~ to coarse SAND(tight) . tondy SILT • • . �—-Ity` i`AND 82- .• 84- -- • I-- Cloy filled joint W (no of Ise) Tan,silly fine SAND with Clean sand stringers , Z 86- ^� �� SAND Ton, to clean fine SA with • = clean fine to medium F+ .• w 88- • • sand pockefs or d c lenses a occasional C---------.. • silt stringers or !� Clean sand (typ.)!'• lenses with 90- __ — -= • . additional features as noted in graphic `� 1 �--:".. �� — log (Clean sand 92- c----- ------ , • pockets shown ------9 diagromatically) • . 94 �__=-- ►IT-1'� C `�" „' • 95' "--�see 4 c•�-- Tr�., • Bottom of Test Shaft • • LEGEND PST-1 ® Plate bearing test • . location and designation •r y4 i rE •• ,, } PROPOSED .• • MT. BAKER RIDGE TUNNEL �r • = MAP OF TEST SHAFT TS- I OCTOBER 1971 W 1984-01 - • SHANNON 6 WILSON INC. GEOTECHNICAL CONSULTANTS 3-/1 Q'r SHEET 3OF 3 FIG. B-44 „i.e. • - SURFACE ELEVATION 204.6 FEET ' S W N. E S•_• ; 0' Loose.brown,silty, Iin.io medium SANG with grovel and • .. roots(TOPSOIL) ' �: • 2- •- • .•:1•::.' :6•.::::::. :;:: '• • : ; Brown to light 1::: ::.:� • •:� :.:; brown,.silty fine 4- trench Drain � •. %r-• -• SAND with ,• . , ,;t;:. BotkfitNd with. •.. •:�;•.: . rounded cobbles q►avel .t.:;'_:•.I , •• •::: : Green-gray.salty ' 8- r.;;:..-. • • • ::N:.�.:: fine SAND with , ` !::;•.ve:. .0 1,. gravel • • .•:•, s' "(Waterbearing) 'rig' g A. 12 , . . . '2'>. 14, 16- t- , w W W • 18- • ' • a 20 W . 0 - Gray,laminated, • 22 LEGEND • slickensided silty - - CLAY with tilt __ partings throagh �`.•s Major slickenside with 24 Z •- -.•-•--- out and occasional relative movement, If - -- scattered gravel discernible. ---• -- z_— —J and cobbles. ------- 26 Apprournote horizontal lines --_ , represent dark 28 — .__ ---- gray clay layers. Space between Is 0.4 ---• �` light gray,massive, . silty cloy with silt 30- partings though- - out. • 321 ♦ ` 34 _N. PROPOSED is • - MT. BAKER RIDGE TUNNEL 36 MAP . OF TEST -__...__.-y __ -•-- _- SHAFT TS-2 • 38_ ;. . ' - OCTOBER 1971 W 1984-01 ' MAP CONTINUED ON NEXT PAGE SNANNON a waSON INC GEOTECHNICAE CONSULTANTS • SHEET I Of 4 FIG. B-45 i'r.,:: . E 38S W N S _ ._-- c. 42 Silly,fine to medium SAND • t / %�� �' . Fine SAND—.�{ . '---... :xv 44-c -- Fine SAND x Gravelly ��� /\-- / / I CLAY - 46-"�� `l —' / • \ Sandy CLAY' i • % / Cobble 48� 50+ ___----""t.:2o oily cl•A • / / 52- — Cobble Random slickenides 54. ITyv)i w i LL 56 . , ----. - Gray,silty CLAY — slickensided sand with scattered ►_- �' grovel and cobbles, l • w 58- \: .• massive. - /"- 60- /'`� ®veT-e � • LEGEND �.� '—.•Major slickenside with relative movement, it 62 1/_•- -. discernible. / NIT-I / ® Plate bearing test location 64- and designation. ;. / / -•-+ Shaft diametrical deformation -�` / measurement , 66- I • ..; 68-7....---,,,,, .... / • • 72, '/ zone • - PROPOSED _� t- — / �__ MT: BAKER RIDGE TUNNEL 74- ellsSoros partingssrrotie • MAP OF TEST • • SHAFT TS-2 ~ OCTOBER 1971 W 1984-01 76- 1 SHANNON 6 WILSON INC. GEOT ECM tCAL CONSULTANTS MAP CONTINUED ON NEXT PAGE ,45J SWEET 2 Or 4 FIG. B-4 5 ir; 1 76 W N . E S ' T .� vH patNps • . 84 •.. 86 \•• ;.f.. 88 --Gro Cl Y--__ +.ice _- 901(1 CLAY , s, 92 t— ta W LL 94 ? Gray,laminated, = silty CLAY with L 96silt partings t8throughout and - occasional scattered gravel and cobbles, • 98 approximately LEGEND horizontal lines ' represent dark gray Major slickenside with 100 clay layers. Space relative movement, If between Is light'gray discernible. massive silty CLAY PST-1 with silt partings elPlate bearing lest location 102 ' and designation. Joints(Typ) throughout. Unit �/ 1 r contains two major — Shaft diametrical deformation —" joint sets, one measurement 104 • I oriented.North-South dipping 90 degrees and the other oriented 106 / ' ' East-West dipping 50 • degrees to the South. 108 Thinly laminated I 110 - • PROPOSED MT. BAKER RIDGE TUNNEL 112 -----• i - MAP OF TEST SHAFT TS-2 • • • 114 ' ' • OCTOBER 1971 W 1984-01 SHA'JNON &WILSON INC • MAP CONTINUED ON NEXT PAGE GEOTLCMWICAI CONSULTANTS .". -`._- SHEET or+ FIG- B-4 5 J •d -'i • 114S W N E S 116 1 • ---� 118 PBT-4 I/8"gouge fM1 • I 120 `_ W ` tz Z 122 • • Joints-N-S ; •• O 124 Approximately vertical I 126 L , , . ,, 128 I Slicksnsidt with 1/I6.-I/8' opening between surfaces 130 '� Bottom of Test Shaft • 9 ' LEGEND •-•-•• •Major slickenside with • • relative movement, If discernible. PST-I 0 Plate bearing test location and designation. on ..`.. ----• Shaft diametrical deformation measurement r>: 1 , PROPOSED MT.BAKER RIDGE TUNNEL MAP OF TEST SHAFT TS-2 OCTOBER 1971 • W 1984-01 SHANNON 0 WILSON INC. • • SEOTECHNICAL CONSULTANTS • 'it. SHEET 4 OF 4 . -45 _ • FIG. B-45 . • . . . . . . . pr, . • . . . . . ..;..,- 1 i • 1-1-/ . .s. . .. • ; . . . . • •. 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PER r[Eu Y Gnome tilrleee SlS,it,A AFprUiMIeIp 131 rest EIMIgA No save 1 2 5 10 20 50 100 C OS 10 1.5 20 29 10 15 eA 4.5 MEDIUM DENSE. DAMP, LIGHT S,ROSN, SLIGHTLY TO BS-1 r G`1 AB I 1 I r I 1 GRAVELLY, 3'1LTY SAND. TRACE OP PRICE 0-s. I ...�.I I I:I MA, NO r FRAGMENTS, ORGANICS. COAL. - 2 I 0 ♦ I . (FILL. . �; • • - 7 f ♦1 i+I . e ♦f. i 1 . ►ID • • •-19 r • I I I• 0 IL I .•20 ' Ii'� ( .1 L. fI ; f SOFT, DAMP, GRAY TO BROWN. FINE SANDY II II ILT • S . TRACE OF GRAVEL AND WOOD. I- 10 a III D • . MEDIUM DENSE.•DAMP.TO. WET. GRAY• TO .CROWN, i-25 I ��- 1 `i 1 SLIGHTLY GRAVELLY. SILTY SAND. - II ;Iu ♦ I I - 1 � 1 k. 12 , I; ♦ i I 1 � I II I • IDI :30 , I , MEDIUM STIFF, WET, CROWN, FINE, SAND 1 SILT WITH ORGANICS. (TOPSOIL. - IJ I . I I111 ♦ N I II 99 1I I II ( I I DENSE, MOIST, CROWN. SLIGHTLY SILTY. VERY 'Ss i4N 1111J 1 I III I SANDY. FINE GRAVEL (VASHON RECESSIONAL) I I I ' • • I 1 411 I L. 1SI` III. • 1 IpI I I i .0- r� 1I,f ( i DENSE. MOIST, TAN. SLIGHTLY SILTY, FBI F I I IIi1, I .1 SLIGHTLY GRAVELLY. FINE TO MEDIUM SAND. • la� 1 I }'I I 4 m I i I- i,i ► I-• ; 1111j1 I , I 'f" II �, o 171 I L. I I .as v I I P VERY DENSE, SATURATED, TAN, PINE SAND. I BOTTOM OP'BORING AT AA FEET • -50 }! COMPLETE e/22/e0 . I II r . • - I =56 I 1 -60 I I • 1 ,. I l • I I 1 1 I .65 II i lit I -70 I I 1Iil)I • I • III I I I I I 75 I I - I I I .. .-.. -BD • . -Ba , e. 90 98 ` • • -100 I I 2 5 10 20 50 100 0 0.3 1.0 1.5 2.0 29 3.0 3.3 40 45 AWL - NATURAL WATER CONTENT (Percent)• -:.crca.av Y n GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS Soil descriptions are interpre- Wafer Level (Date) DTHER TESTS . live and actual changes may ATD-At Time of Drilling ® 2�O.D. Split Spoon Sample 0 Unconlwlldated UndroiMd MA Mechanical Analysis be-gradual. ISI 3'0.0. Shelby Tube Sample Trio■lal HY Hydrometer • . Bentonite Seal .. . . •121- 3e O.D. Pitcher Tube Sample A Torvone 0 Pocket Penetrometer .CA, Combined Anolysla No Recovery CT Consolidation Test Observation Well Tip 0 Unconfined Compression Lin- er Slotted Section CU Consolidated Un- --- WATER CONTENT drained Trlo■lol Test Pleatle Limit F--0 -1 Liquid Limit CD Consolidated (Perms) 'Permit) • ,n Natural Water Drained Tlla■i01 CentenP Test C) (Percent) DS Direct Shear Test W O J-712-30 see0 NAIIT-CNOwaaa a letee IRe, 1 ---- - - " SING LOG S-45 F . SOIL INTERPRETATION . STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TEST) •4') [......2 w 1'1, 30..cl erNl 1 661 I 001114 CODOIMTlI. N 111.41I. 1 I CII fl o.j16 BLOWS PER FLIT . 6rpoi 410.6t pi.ity•e? #p riww1111 !f 4 'MI F.IfY41N.11 Ito f "t , 2 3 10 20 50 100 0 US 10 IS 20 25 10 33 40 41 —0 I f _ - MEOIUN DENSE. MOIST. BROWN. SLIGHTLY - I I I; • GRAVELLY. VERY SILTY FINE SAND. - I'j 1 i • II " IFILLI - t• .5 2 A i ,Iy , LOOSE TO MEDIUM DENSE. MOIST. BROWN TO ' GRAY. SLIGHTLY GRAVELLY. FINE SAND. 3 TRACE OF BRICK FRAGMENTS AND ORGANICS. - Q 4 -10 , ....... - A h\. M DENSE. MOIST. BROWN TO GRAY, - l MEDIU SLIGHTLY GRAVELLY. VERY SILTY. FINE SAND. S . TRACE ORGANICS. -IS e 410 __ - _ -_ -- - -20 • 4 p • LOOSE. MOIST. DARK BROWN TO GRAY. VERY - SILTY FINE SAND. TRACE OR BRICK FRAGMENTS, I. CHARCOAL AND W000. A L , 01I , 102.5 - 9B r o MEDIUM DENSE. MOIST. LIGHT BROWN TO RUST -2y . MOTTLED. SLIGHTLY GRAVELLY SILTY FINE • , SAND INTERBEDDED WITH FINE TO COARSE 10 V 0 A MA . SAND. IVASHON RECESSIONALI - 11 I 1) a -30 t20 V . VERY DENSE. MOIST. GRAY. SLIGHTLY SILTY. 1S ' V 4 . • SLIGHTLY GRAVELLY. FINE TO MEDIUM SAND. - • -33 - O N • u, 1• - • a -40 v 8,. I , VERY DENSE. SATURATED. GRAY. FINE SAND - o ., , WITH A,teAC,! OF ,$I(.T. .. - Y .. .. . • . • .45 I • - ' 16 �� • . I Sa 71.5 - 6" BOTTOM OF BORING AT AW.S FEET• ' COMPLETED e/3/60 `SO • • -55 , . .60 r • - 4I + _... F 65 I I. I -70 , ' . -7S • -Bo -85 • , -90 ' -95 • •-IDO . 1 2 5 10 20 50 _ 100 0 as 1.0 1.32.02.53.03.5 4.04.5 ' • NATURAL WATER CONTENT (Percalt)• 2 .....- . • NOTE . . ` GROUNDWATER LEVEL SAMPLING .}REAR STRENGTH TESTS OTHER TESTS l' FIJ Soil descriptions ore interpre- Water Level (Date) ® 2'0.11 Split Spoon Sample . 0 Unconsolidated Undrained MA Mechanical Anlilysi, ' rive and actual changes may ATD-At Time of Drilling Triaslal be gradual. isi3'O.D Bentonite Seal El 3.10.D. Pitcher Tube Sample .4 Torva'e CA Combined Analysis • No Recovery O ' Pocket Penetrometer CT Consolidation Test • Observation Well Tlp 0 Unconfined Compression CU Consolidated Un- • • or Slotted Section drained Trla:Ia1 )PATER CONTENT Test Pfeifle LIM11 1---44—I Lipid Llwlt CO Consolidated (hresRt) (PercaU Drained,Trlaalal -ft Naturel View Test Cont1M • - (Percent) os Direct Shear Test Co .1-P>I>r-5 0 11180 "6 MART-CAOWSrR to e. e. BORING LOG S-4 6 SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TESTS • • 1.40 ward wip\ tt t, 30 v4A ii1 11411 - . BORING COORDINATES: N 21d.T91 E 1.634.6.3 DWI GLOMS PEA FEET ' Geetwd Svfece(144e1111 Apere.ln\Iily 1l9 54011 [laatlott fM Sample I 2• 5 10 20 SO 100 0 05 10 1.5 20 25 30 37 4.0 45 • 0 I II • STIFF, MOIST, RUST-TAN, MOTTLED SILT, 1 TRACE OF It00TS AHD CHARCOAL, I 1 • 5 I ! I GRILLING ACTION INDICATES GRAVEL AHD ! COemL(s FROM 7.0 TO e.0 FEET. 130 2 , MEDIUM ,DENSE, DAMP. LIGHT BROWN. GRAYEU.Y. 10 1. 4 ` - SILTY FINE SAND. THIN BEDS OF FINE ' SANDY SILT. 1 • ! IVASNON RECESSIONAL) • . 15 I u . 1 4 1 I I J ♦ I 20 1 LOOSE. MOIST. GRAY.-SLIGHTLY GRAVELLY. I .. . ._ SILTY SAND. .�_., S „ V v . ♦ I 1l4 25 I HARD. MOIST TO WET. GRAY SILT. HORI- ZONTAL TO VERTICAL LAMINATIONS. REACTIVE ■1TH HYDROCHLORIC ACID. ►-' .� a1 i (OLDER MARINE) 30 j II • T• ♦ N 0 I ' STIFF TO VERY STIFF. MOIST TO WET. 35 • I I I GRAY. CLAYEY SILT. TRACE OF FINE PUMMICE II11 GRAVEL. MODERATELY SLICKENSIDED SURFACE I i i MARBLED DISTRIBUTION OF SILT AND CLAYEY . • , � • j F 0 I SILT. REACTIVE WITH HYDROCHLORIC ACID. . , I i ♦ .. {I 40 9 0i l 1 1 1 f 1 11I11 I I j - MINOR PARTINGS. lok Ai IJIIy- 1 - 45 i I Cr 50 12ii, 1 0 p I_I I l q 6)- 1 , ! 1 ._,-- I I ' I1 j I > INCH ZONE HEAVILY FRACTURED ANO 13' ---: ' ' ' ' - k b i jil i I I I i I. I ' - SLICKENSIDED. • 55 • '_ f' Iy I . i VERY STIFF. MOIST TO WET. GRAY, I. l If j! • f I I I I SLIGHTLY CLAYEY SILT. TRACE OF )Oil- - j j '! aj II !i� I I I ; ! . I ZONTAL SILT PARTINGS. ANO LAMINATIONS. ll � 1 I i I j SLIGHTLY SLICKENSIDED. REACTIVE WITH -60 _ I I� 1j 1 If � HYDROCHLORIC AE10. �� I � '— I J I t l II ! I j �s :19 ' I l I ! I • _(;5 ;r---- ' !I! I--1 I I ----_, . - . Is►♦' I y I • i I I I j i .. .TO I r. 1 ,...... II VERY DENSE, DAMP, GRAY, SLIGHTLY SILTY. 111AM lJl •• FINE1 II AA SAND. -T5 B ! 11 I t1• I j I HARD. MOIST. GRAY, SLIGHTLY CLAYEY STET I I ..I 1 1 I TRACE OF FINE SANDY SILT PARTINGS. - I9// I , e0 - ♦ • V BOTTOM OF BORING AT 79 FEET -80 - { } . COMPLETED 9/E/90 ••. , NOTE. 'OBSERVATION WELL WAS DRY TO I . l ._ • • THE BOTTOM OF THE BORING AT TIME OF DRILLING AND ON - 10/3/.O•AND 12/1'5/10. 85 • -90 . • -95 f - -- • • -100 1 2 5 10 20 50 100 0 0.5 1.0 I.5 2.0 23 3.0 3.5 4.0 4.5 NATURAL WATER CONTENT (Percent)• NOTE 2 GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS OTHER TESTS Soil descriptions ore int rpre- '- Water Level (Date) ® 2'0.D. Spelt Spoon Sample 0 Unconsolidated Undrained MA Wehonicol Analyses • - live and actual changes nay ATD-At Time of Drilling 3'O.D. Shelby Tube Sample be gradual. (Si HY Hydrometer Bentonite Seal El3'0.D. Pitcher Tube Sample A Torvane CA Combined Analysis • No Recovery0 Pocket Penetrometer CT Consolidation Test • Observation Well Tip 0 Unconfined Compression CU Consolidated Un- - or Slotted Section• . ... drained Trieslal WATER CONTENT - Test • Mulls Limit —0--1 Liquid LIAR CD Consolidated (rWc.Rf) (hresRt) Drained Trlasiol • • IMarol WeIi► Test Content 'n (Percent) O9 Direct Shear Test • ' • co ' -712-30 . 1s(0 • . OS HART-CROWEIR A lelee Me. tV BORING LOG S-47 . SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UFDAAINED SHEAR STRENGTH OTHER Ti1Ta ' I I40 sc.s.d MIe1. i0 MCA •OII 11111 • ZONING CoollotNATISI N 211.111. E I.Ili.I®I Dij1k BLOWS PER TUT • . Goosed Scrims Elleetles Aee►sslRrtly 138 Feet Elseetlsa ten Saen)e I 2 5 10 20 50 100 0 0.5 10 1.3 20 2,3 30 33 4.0 4.5 ,SOD .-0 I MD MEDIUM COd 01M E. WET. GRAY-EF7 . 11G►1Lr GRAVELLY. - �. II SILTY rim'SAIL. TRACE ORGANICS MO CHARCOAL. • (FILL) ' 114.S - 11 0 I II MEDIUM DENSE. MOIST. TAN-BROWN. GRAVELLY. -s I 1 �, SILTY. SAND. , IVASHON RECESSIONAL) - 2 ►.' •• MA :10 I ' DENSE. MOIST. GRAY. SLIGHTLY MOTTLED. . SLIGHTLY GRAVELLY. VERY FINE. SANDY SILT. - i ' • 4 • :IS II 122 HARD. MOIST TO WET. GRAY. SILT. - • THIN LAMINATIONS OF'FINE SAND AND SILT 1 ►�' O .. • DIPPING FROM O" TO 30-. REACTIVE WITH - HYDROCHLORIC ACID. -20 CA. HO )OLDER MARINE) ... BECOMING DISTORTED WITH NEAR VERTICAL -25 I , PARTINGS. AND SLICKENSIDED SURFACES: 6 0 Ora 30 • s , IV O O— UU • . -40 9 �� si'o ' • _.... 10 ' 4 I O O • UU •4t3 II �� pa - I BECOMING THINLY INTERBEDDED CLAY AND SILT - 12 , paloo •, CD in, . WITH SILT PARTINGS. LOCALIZED ZONES - , 'INTENSELY SLICKENSIDED. -50 13 /' 4 - ' I1 ' • d O `5y I • , - IS 0 0 • -60 — 0 TRACE OF FINE GRAVEL. PUMMICE. 16 ►�' ■ • 17 ►�1 •0 •63 I • HARD. MOIST TO WET. GRAY. SLIGHTLY CLAYEY - • • SILT TO SILT.MAssivE. - • I Q ►5 0A • • -70 I lo ��� � � -75 I . • HARD. MOIST TO WET. GRAY. SILT AND CLAYEY - SILT. THINLY BEDDED WITH FINE SANDY - SILT PARTINGS. MINOR FRACTURES AND 20 ►�I • 0 0 - SLICKENSIDES. :BO II e INCH BED OF FINE SAND. - e5 I I 22 @ a 4 • • r 23 ill • ._ TRACE OF COARSE SAND. ^95 I ' 21 ♦ • 1 IA • 71 ►A' • • I BOTTOM OF DOPING AT 99 FEET 100 - - - - COMPLETED 6/13/60 I 2 S 10 20 S0 100 0 01 1.0 l.s 2.0 23 3.0 3.5 4.0 4:3 ,NgTE, OBSERVATION.WELL DRY OF THE BORING NATURAL WATER CONTENT (Percent)• AT TIME OF DRILLING AND ON S/19/10. . "'" . ' "" NOTE • 10171e0. 12/IS/s0.� GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS OTHER TESTS Soil descriptions ore (Merpre- ~ Wafer Level (Date) ® 2.0.0. Split Spoon Sample 0 Unconsolidated Undroined MA Mechanical Analysis five and actual changes may ATD-At Time of Drilling 3e O.D. Shelby Tube Sample Triazial NY Hydrometer be gradual. A Torvone Bentonite Seal El 3 O.D., Pitcher Tube Sample CA Combined Analysis • • • • -S No Recovery 0 Pocket Pen.lromefer CT Consolidation Test • Observation Well Tlp 0 Unconfined Compression CU Consolidoted Un- or Slotted Section drained Trlaslal WATER CONTENT Test Plastic Limit I-41--1 Liquid Limit i CD Consolidated -n IPerosml (Pwceet) Drained Trlosiol , t otural Water . , Test Content • . (Percent) DS Direct Silver Test CD w • �-TT:-gyp teeo MANT-CRGWeER a Islas lee. 1 • 1 BOS1:. -LOG S-49 • SOIL.INTERPRETATION STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TESTS ' (14o sound rsi si 50 inch moel I► I I :10IN4 '•'rIDINATts, N 216.906 f I.679.216 15e0H1 BLOWS PER FEET • Gnaw* SWrlete E1e•e01e* Affessiselel, 11 7 Foes Flow* tu enyl t Se I 2 0 10 20 50 100 0 05 10 15 20 2.S SO S.S'40 45 0 T LOOSE TO WEOIUM DENSE. DAMP. YELLOW-BROWN. SILTY FINE SAND. TRACE OF FINE GRAVEL. 1 •VASHON RECESSIONALI 5 • 2 I . -.-.-... . -_ . . - 3 .i. a -- . . . . 10 4A . A a . 5 0 ♦ • • 15 , 97.S I VERY DENSE. MOIST. BROWNISH GRAY. GRAVELLY. VERY SILTY. FINE TO MEDIUM SAND. 6 IVASHON TILLI 20 I 7 2 •• p� 25 eA ►mil • 134.5 B I•\ • Ia?�.. . HARD. MOIST, GRAY, FINE TO COARSE SANDY ,•, 30 '' SILT. TRACE OF FINE GRAVEL. REACTIVE WITH HYDROCHLORIC ACID. IOLDER MARINEI • 0 @ •• J ,BECOMING BROWN WITH A TRACE OF FINE SAND 3S II BEDS. NOT REACTIVE WITH HYDROCHLORIC ACID. - • ..• 101-1 ua W O . Y Y I,1.1 • y 45 • U. i' • 12 @ ♦ 52 44.5 50 BOTTOM OF BORING AT A9 FEET ' COMPLETED a/26/80 ' • • 60 I I I . I I 65 • • • 70 75 , 80 • 85 90 . 95 - -- • 100 - I 2 5 10 20 50 100 0 0.5 1.0 I.52.02.53.03.5 4.04.5 • ' NATURAL WATER CONTENT (Percent)• • - • NOT P. GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS QTHER.TESTS, Soil descriptions ore interpre- ,py_ Water Level (Data) 02"0.D. Split Spoon Sample 0 Unconsolidated Undrained MA Mechanical Analysis this and actual changes may i ATD-Al Time of Drilling• El 3"0.0. Shelby -Tubs Sample Triasial HT Hydrometer be gradual. a Torvone121 CA Combined Analysis .. Bentonite-Seal 3 O.D. Pitcher Tuba Bangle Pocket Penetrometer • CT Consolidation Test • No Recovery "II0 Unconfined Compression CU Consolidated Un- Obaervati0n Well Tip Or Slotted Section drained Triasloi (6-1 orCONTENT Test • CD Consolidated •' """ ►Isstic Limit I---• I Lurid Limit • Drained TrIO><i01 • (Percent) (Percent) • ' Natural Water Test . . . ... .., Content • ... • In (Percent) DS Direct Shear Test J-Tta-30 fee0 ; . . . . . MART-CROwt[A aletee lee. • . -4, . BORING LOG S-53 SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TESTS 1,40 PO,.W ••.QM, !J.+c+ aroel i Ire 1 •I.,•. •rL.OlNe rr S ,. lie •.e1 I ,.1.1e itr DOOR Bta*S PER iEE T ♦ . if3�1 idflBN Ellt9l19R kd$felikiltiI 1..:26 fell €Itial18i Ali §erTitil I I U 20 50 loo 0 U5 o IS 20 2.3 SO 33 40 43 SOD '0 S_1 Z . 1 •• -1 i K ' 1 r, I i - i MEDIUM DENSE. DAMP, GRAY TO BROWN, vcPY I Ii I I + SILTY FINE SAND. TRACE OF FINE GRAVEL. I1 I I , BRICK FRAGMENTS AND CHARCOAL• . -S 5-2 L I .. (FILLI 1 l • I • S-3 g . • • , • - ♦ •5- z = . . . `10 .5-S •A 93.5 II . MEDIUM DENSE TO DENSE. MOIST. BROWN, 5-6 IX I 0 • SLIGHTLY SILTY. FINE TO COARSE SAND. . il] TRACE OF FINE GRAVEL. -IS • •S-y ` • (VASHON RECESSIONAL( ' • - S-e I • -20 . • BECOMING VERY DENSE. - . 1 ' • S-o • i -25 , , , , I • I - • •- - --- - - - - S-hoe!&� a i VERY STIFF TO HARD, WET, GRAY-TAN CLAYEY -30 ' SILT THINLY INTERBEDDED WITH SILTY FINE SAND. NOT REACTIVE WITH HYDROCHLORIC • ACID. GRADING, TO HARD. WET. GRAY. SILTY - ' CLAY WITH THIN LAMINATIONS OF SILT AND - S-II // - • d FINE SAND. • - `a ♦ . -3S IIog - W Y NI ..... ... • ... 67 m S-IQ. , �T" ... -40 i • . • 5-13 ere , . 5-1e , , -4S 5-ISApi iyi • - • II ' . S-16 l Q 36 -50 S-17 g5 • ---wt VERY DAMP. MOIST TO WET. BROWN. SLIGHTLY - I I _ SILTY, FINE TO MEDIUM SAND. - I I I (VASHON TILL) S-Ie '' : I A r 526- . . . 50 i I I- 1 HARD. WET. GRAY. SLIGHTLY SANDY. CLAYEY ,. I III SILT. MODERATE SILT PARTINGS. NOT 5-19 62 I ! •6 I REACTIVE WITH HYDROCHLORIC ACID. I '-60 ! I 5-20 2/ • ♦EL -65 I . j HARD, WET. GRAY. CLAYEY SILT. MASSIVE. - • WITH TRACE OF SILT PARTINGS. REACTIVE , I WITH HYDROCHLORIC ACID. 5-21 • ♦92 70 I S-22 I • M I ' 5-23 • • • 27 -so , • BOTTOM OF BORING 79.0 FEET - • . COMPLETED a/e/SO - -85 -90 • -9S . 00 1 • I 2 5 10 20 50 100 0 0.3 1.0 LS 2.0 2.5 3.0 35 e.0 e.l NATURAL WATER CONTENT (Percent)• NOTE 3 GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS OTHER TESTS '1 . Soil descriptions are interpre- 57.L. Water Level (Date) ® 2"O.D. Split Spoon Sample 0 ,Unconsolidated Undrained MA Mechanical Analysis five and actual changes may I ATD-At Time of Drilling 3" Triallial be gradual I m O.D. Shelby Tube Sample HY Hydrometer BentMite Seal 3'O.D. Pitcher Tube Sample Torvane CA Combined Analyses • No Recovery0 Pocket Penetrometer CT Consolidation Test Observation Well Tip 0 Uneonflnsd Compression CU Consolidated Un- L il I or Slotted Section drained T►lasial WATER CONTENT Test Missile LIRIIt 1—S I Liquid Limn CD Consolidated (Percent) (Percent) Drained T►laslal Natural Waler Test -n Content (Percent) DS Direct Shear Test CO r71:-30 1ee0 MART-C.IIOwiLll.a Ws* Inc- . BO.1:___:.3 LOG S-54 4� SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UNORAINED SHEAR STRENGTH OTHER. TESTS I I no oound .a4nl, 30 inch moil I AN 1 :=-iN, C:OWDINATES. 'I 21I.6:e E ..6I9.421 . Death BLOWS PER FEET ° • a.erwd Swim ['miensA anew/zee, tor F661 (I.YshsA hn Sowe16 I 2 S I O 20 50 100 0 05 10 15 20 25 10 15 40 45 • SOD s-I I I !ill 1 • LOOSE TO NEDIUM'DENSE. .DAMP TO WET, TAN I .. TO BROWN. VERY SILTY. FINE SAND TO VERY RI I I II . FINE 'SANDY SILT. TRACE OF FINE GRAVEL 5-2 '/X I I ; I I I AND ORGANICS. f-•J I IFILLI S_3 °�. SRADING TO LOOSE. WET. GRAY. SILTY SAND 1FILLI WITH TRACE OF-ORGANIC FIBRES. S-6 I 0 90.5 MEDIUM STIFF. WET. DARK BROWN. VERY SANDY 10 . • SILT WITH FINE ROOTS. (TOPSOILI 96 S_sA 0 i • MEDIUM DENSE. MOIST TO WET. TAN TO BROWN. SLIGHTLY SILTY FINE TO MEDIUM SAND. INTER- 5-6 I 0 I • BEDDED WITH SILT AND SILTY FINE SAND. TRACE of FINE GRAVEL. 15 .ASHON RECESSIONALI' - 1 d DENSE. WET TO SATURATED. VERY FINE 5-6 Al0 f, a • 11 PAVELLY, MEDIUM TO COARSE SAND. 20 c Y 1 . S-9 A A - • 25 • I , . • ._ I . VERY DENSE. SATURATED. BROWN TO GRAY. SLIGHTLY FINE GRAVELLY. SILTY FINE TO 5-10 1♦/ 0 a • MEDIUM SAND. INTERBEDDED WITH FINE SANDY SILT. 30 • . 5-11 ,. 0 . a . . 35 0 • 5-12B o 0 ° • GRADING TO VERY STIFF. WET. BROWN. SILTY 40 CLAY INTERBEDDED WITH FINE SAND. BECOMING ' - • GRAY. AO 5-13 r4 45 I , ) • 5-16 g 0 0 50 5"16 • 0 ° a l • S-16 , I—'.- G O f CT- GRADING TO STIFF. WET, GRAY, FINE SANDY. 55 P I . SILT. ,, S-1T �A j VERY DENSE. MOIST., TAN TO BROWN. CLAYEY 5-16 I VERY SILTY. VERY FINE TO GRAVELLY. FINE W 5-I9 ' , ° • I I i TO MEDIUM SAND. • 60 g I . 5-20 12 0 65 •I I t 1 ' I I GPAOING TO VERY DENSE. WET. TAN TO BROWN. I SLIGHTLY SILTY. FINE TO MEDIUM SAND. • 5-21 ill . • ,�' 0 76 70 I • ' BOTTOM OP BORING e9.0 FEET I I . COMPLETED e/12/e0 . -75 • 80 • • • 85 — �...... . ;_ . . . . ..„. ----- '-- . 90 95 • • 100 - - I . I 2 5 10 20 50 100 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 NATURAL WATER CONTENT (hrcsnt)0 ,lNO P. GROUNDWATER LEVEL . SAMPLING SHEAR STRENGTH TESTS 9THER TESTS . eel • Soil descriptions'are informs- yj„ Water L•seeI (Date) ® 2.0.0. Split Spoon Sample 0 Unconsolidated Undrained MA .Mechanical Analysis flee and actual changes may i ATO-At Time of Drilling 3'O.D. Shelby Tube Sample Triasial • NY Hydrometer be gradual. • -. Bentonite Seal 121 3.0.0. Pitcher Tube Sample Torte CA Combined Analysis * No Recovery • .0 Pocket Penetrometer CT Consolidation-Test , ` Observation Well 'Tip 0 Unconfined Compression CU Consolidated Un • - Or Slotted Section drained Trioelal • WATER CONTENT Test • Plastic Limit � Lieeld Limn CO Consolidated � • Women (Percent) Drained Trlasial • . • Natural Weer Test . -n • CenteR • • (Percent) DS Direct Shea Test T .1-711-30 1e1.0 S • NARY-CROWill a aeaesinton ins. • BC AG LOG 5-55 SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TESTS 11 40 sowd •apni, 10 .nth d.•yI I UI I 6c00106 CODi•DiNATEs. N 316.r1. E I.1119.•41 D•sis BLOWS PER ICET • 6.46.w. IIw1964 E14•4144 ASNuiIN[ait It I /Nt Donation 4u So�npu 3 Ii3 i6 313 106 d 63 io 15 id it to 55 Id /5 • STIFF. MOIST. GRAY TO BROWN MOTTLED. FINE 'O I i I I I I r SANDY SILT. TRACES OF GRAVEL. ,��•/,I ' Ij0 (FILL) - 1 '/4 I I• 5 2 �•�1 . j • • 1 1 . STIFF. MOIST. GRAY."CLAYEY SILT. - S I • I • • _ _ -10 AA 1 I A • •... LOOSE. MOIST. DARK BROWN TO GRAY. VERY e SILTY FINE SAND. TRACE OF FINE GRAVEL AND - I ORGANICS. _ S X ' I • . • toe • MEDIUM DENSE, MOIST. TAN TO GRAY. FINE TO i . -MEDIUM SAND. TRACE OF SILT AND FINE T GRAVEL. - *20 r , I VASNON RECESSIONAL) - a . • II I • - 9 / • 0 -25 , . - , r . • INTERBEDDED WITH SILTY SAND. - IOAAA' - • e rt1 ■ A -30 BECOMING DENSE. . - 11 V4 • A ' :35 I U, 03 12 �I : • 1 40 - p ... 0 I c HARD. tIST. GRAY. SLIGHTLY SANDY SILT. TRACE ee o cc FINE GRAVEL. tCT REACTIVE WITH HYDROCFLORIC - , 13 0 ` • d, . ACID. (VAS►ON TILLI Si - . BOTTOM OF BORING AT 44 FEET -45 • . COMPLETED4/A/e0 - F . I- 1-50 • I . I , -55 • r . • I ` 1 - l -60. I - , ,. ` • - . -65 Ir i 70 -I - - . 6 75 • -80 - -85 I I I . 77.777-7- . -,7-, -- - . I . I -90 _ . . . l . - - - -95 : -ioo I - - --- . J. . 1 2 5 10 20 50 100 0 0.5 1.0 1.5 2.0 21 10 9.5 4.0 41 ' NATURAL WATER CONTENT (hrtmntl• NOTE $ GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS OTHER TESTS wi Soil descriptions ore interpre- 2 Water Level (Dote) ® 2"0.D. Split Spoon Sample 0 Unconsolidated Undrain.d MA Mechanical Analysis five and actual changes may ATD-At Time of Drilling tz-1 " Triasial be gradual. Lam! 3 O.C. Shelby Tube Sample HY Hydrometer - 0^7� 3"0.D. Pitcher Tube Sample o Torvane Benfanite Seal • �l mP CA Combined Analysis • No Recovery O Pocket Penetrometer j, CT Consolidation Ti.? Observation Well Tip Co Unconfined Compression CU Consolidated Un- L_, or Slotted Section WATER CONTENT drained Triasial Test Plastic Limit 1-111---1 Liquid Limit CO Consolidated • (Psecasti Ihre.M) Drained Trlasial 'n Natural Water Test Content • (Percent) OS Direct Sheer Test , . 0) J-Till-30 1050 V MART—CROWSER I I.I.. Ia.. BORII:.: 'LOG S-56 - SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TESTS • ,so 96..6 .6•t.), 3C -c+ Wool I111I Ilcui.4 cOORDIwTE11 '/ r 16.601 E 1.619,311 06pth 11�0*S PER 'EET • 54.M S44416t6 tI646146 666.64ima$.It 119 fool 114t611444 1661 5W►V16 I ! 3 ;) a 49 •r61 0 ,l! . SOD —0 I T 1 , . • \ I II, ; '• II MEDIUM DENSE. MOIST. GRAY AND BROWN - I I • 1 • MOTTLED. SILTY. FINE TO MEDIUM SAND. - 1 , I I I 1 TRACE OF GRAVEL WITH GRAVELLY UNIT FROM II ••' I ' S.s TO 6 PEET:....... . ... 1 (FILL) -5 ` I 113 - 2 I I I .• A I MEDIUM DENSE. MOIST. GRAY AND BROWN . I MOTTLED. VERY GRAVELLY. VERY SILTY SAND. - 3 I I I I I . IVASHON RECESSIONAL) - I • ' 109 r10 VERY DENSE. MOIST. GRAY. SLIGHTLY - 9 a t I A GRAVELLY. VERY SILTY SAND. 1 9' Sdi 11/ (VASMON TILL) i i 6 , -15 I. N . �6 I A 6" - 7 S I r Asa .20 I 1 6.. - a I . Ala • 6" 1.2S . • 93.5 F - VERY STIFF. MOIST TO WET. GRAY. CLAYEY ' ' 51LT. TRACE OF FINE GRAVELLY PUMMICE - MARBLED WITH MODERATE SLICKENSIDES - 9 '/ ' THROUGHOUT. REACTIVE WITH HYDROCHLORIC - I■ ACID. -30 10 , I ' (OLDER MARINE) . . .. .0 11 @ • •. r 35 II. - 12 , ' TRACE OF SILT PARTINGS ORIENTATED FROM - 0 . 45 DEGREES TO NEAR VERTICAL. VERY -40 SLICKENSIDED. - 13 �; ` • 1• A N . -45 ' 1 - 1s �� - ♦0 - i , INTENSITY OF SILT PARTINGS INCREASING -50 WITH DEPTH TO SPACINGS LESS THAN 1 INCH. • INTENSITY OF SLICKENSIDES INCREASING TO • TRACE. 16 + • ....--. -55 ' LOCALLY BLOCKY. FRACTURED I • 17 60 BOTTOM OF BORING AT 59 FEET o . , .T . . COMPLETED 11/1A/S0 -60 4 ' NOTE, OBSERVATION WELL DRY TO THE TIP. - - ,RECORDED ON 6/19/60, 10/3/60, - 12/1S/S0. - -65 - ' L . r r • -70 I • 1 I- r -75 r • 180 , ... . . .. ......... . .. , .. -85 . . . ._ .. • ... . . I . 1-90 ! 6 I -_ . • -95 . .- . -100 I - I 2 5 10 20 50 100 0 .0.5 1.0 1.52.02.5 3.03.5 4.04.5 • NATURAL WATER CONTENT (Percent)• NOTE S GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS OTHER TESTS • • Soil descriptions are interprs- Water Level tette) ® 2W 0.0. Spilt Spoon Sample 0 Unconsofiddfed .Undraiiled • MA Mechanical Analysis live and actual changes may ATD-At Tlme of Drilling Triaslal be gradual. I n 3 O.D. Shelby Tube Sample MY Hydrometer Bentonite Seal Z 3.0.0. Pitcher Tube Sample A Torvone CA Corntiin6d Analysis • No Recover 0• Pocket Penetrometer y CT Consolidation Teat Observation W611 ttp• O Unconfined Compression• °� CU Consolidated Un- i__! or Slotted Section )PATER CONTENT drained Trioslol . _ Test ' • Fissile Limit ---41--I Liquid Limit CO Consolidated 11 • (Percent) (Percent) Drained Mollie' Natural Water Test A C6n1661 • to • (Percent) DS Direct Shoot Test COdo J-712-30 tee0• • MART-DROWSIER a eese616t66 Inc. • BORING LOG S-57 •'-• €©I! INT€RRR€TAT ION ;TAN AHn rlthc THAT!1N RESISTANCE IRIpRAINEf SttEAR STRENGTH OTHER TESTS. • ;140 Sound wagn(, 50.nCn aro01 I I4lI BORING COar>a INATES, N 21e,See. E 1,639.660. Own BLOWS PER FEET • • ' • Grew d Serfoce EII,.t ow A.erouma(e(y lee Feet Elevation teal Semple I 2 5 '0 20 SO 100 0 05 10 15 20 2.5 10 31 40 4.5 ' MEDIUM STIFF. DAMP. BROWN. FINE To COARSE. �0 1 1 II' I I—'T"I I ' SANDY SILT WITH CHARCOAL FRAGMENTS. ' - 1 11 (FILLI - 1 f--'' ' ! I I i• I VERY STIFF. DAMP TO MOIST. BROWN (RUST 1J9 -5 I I ` I , I MOTTLINGI. FINE SANDY SILT. HORIZONTAL _ . • ' LAMINATIONS. NOT REACTIVE WITH HYDRO- - k7 . - C HLOR I C ACID. 2 flX1 • ! I i (OLDER WAHINE 1 _10 I ! I I ' -" 1 I 10 -15 ( • • • i • . .. E" 0 0-- UU• . .. .. -20 s i • VERY STIFF, MOIST TO ■ET. GRAY. SLIGHTLY I CLAYEY SILT. INCREASING DISTURBANCE AND - I • I , CLAY CONTENT WITH DEPTH. SLIGHT SILT - 2PARTINGS AND SLICKENSIDES. REACTIVE WITH 6 HYDROCHLORIC ACID. -25 o I , - i� I ' —it To I INCH HIGR4.Y W FRACTLR SLIM/4SiO(D ZONE. _ . T // a -30 -2. . - e ., - t---1 D '- 0 V • TRACE.OF FINE GRAVEL. - 9A ��� • • -35 o• Br, : • • -40 • a HARD. MOIST. GRAY. VERY FINE SANOY SILT. - - • TRACE OF COARSE SANG AND FINE GRAVEL. - II '/ • A REACTIVE WITH HYDROCHLORIC ACID. . - ^45• IIVERY STIFF. MOIST TO WET. GRAY CLAYEY - . . SILT. SLIGHT SLICKENSIDES AND SILT '' PARTINGS. REACTIVE WITH HYDROCHLORIC ACID _ 12 • • -50 I I . I • I •• . i • 1 • o 1,15 I • SILT PARTINGS. 16// : A . eS ' BOTTOM OF BORING AT 59 FEET -60 • I COMPLETED 9/e/e0 • _ I . -65 I I 1 1 I • • ? I '-70 i I .... _.. . -75 . , -BO is -85 1 . , I • . • -90 f , • I -100 l • I I 2 • 5 10 20 •S0 100 0 0.5 1.0 1.52.02.5 5.05.5 4.041 •- ••• ••••• ••• NATURAL WATER CONTENT (Percent!• -• fCQTE s GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS 9THER TESTS �( Soil description or• interpre- Water Level (Date) •• ® 2"0.D. Split Spoon Sample 0 Unconsolidated Undroin.d MA M.chanico! Analysis five and actual thong.. may S{- ATO-At Time of Drilling 3"0.0. Shelby Tube Sample Triasiol be gradual. HY Hydrometer Benlonite Seal El 3"0.0. Pitcher Tube Sample a Torvone CA Combined Analysis ,1, • No Recovery o Pocket Penetrometer CT Consolidation Test • • ! , Observation Well Tlp 0 • Unconfined Compression CU Consolidated Un- ' or Slotted Section WATER CONTENT Tit drained Trio:iol ' • Plastic Limit 1---40-1 Liquid Limit CD Consolidated . - (PercentI (Percent! Drained Triasiol • Natural Water Test • 0 ' • Content (►ercentl DS Direct Shear Test 03 • 1 M .1-712-30 1111110 • HART-CROWS/II I Isle. Ins. • • BORING LOG S-58 . OIL iNfEAPOETAfiON ;iA►li;nnj rElIt lnnili;N l7 .F1§TAit llti[iiiAlitE(i §tii Al .§.TPCNM)T►( ilTIlE$ TESTS :.4 0 po 4 wr.Q1,1, 30,ncn aropl .III) BORING Cnv+OINATES. N 216.777. E 1.639.845 Depth BLOWS PER FEET. Crawl Surface (levities AperonnWtsly 169 FN1 Elevation feel ' Somele 1 2 S 10 20 50 100 0 OS 10 15 20 21 30 !.S 40 4.3 VERY STIFF. MOIST, BROWN. GRAVELLY. SANDY, T O I I I i ` I 1 I SILT. TRACE ORGANICS. - i . I 1 I Ili1 ...t.TOPSOILI ` - i 1 I 166 - 1 0 - i i I • li VENT STIFF, MOIST, BROWN TO GRAY, MOTTLED.-- - SILT. THINLY LAMINATED WITH HORIZONTAL -5 SILT PARTINGS. I ( 1 IOLOER MARINE) - - I - 2 1 ♦p . . -10 . VERY STIFF. MOIST TO WET, GRAY SILT. - TRACE OF NEAR VERTICAL FRACTURES AND - • SILT PARTINGS. GENERALLY MASSIVE. _ - . REACTIVE WITH HYDROCHLORIC ACID. - • 15 I I i . BEDDED CLAYEY SILT ANO SILTY CLAY NOTED - • FROM 17.5 TO 16.5 FEET. 4 , i ♦ 0-- -20 5 0P VERY STIFF. MOIST TO WET, GRAY, CLAYEY - I • i j SILT. VERY DISTURBED SLICKENSIDED ZONES - OA ��� ♦ ;•, ,• • �� 7 i LAYERED WITH MASSIVE CLAYEY SILT WITH • B ♦ • e 1 SILT PARTINGS AND FRACTURES. -25 , i ! + I _f_- - I _ i • . 7 • - ♦ • . - e la . .. 0--.. • -3S ' 9 . i _ ♦ - • • - lO , �T- - 11 " A • =40 I ; - 12 �t] : ♦ 4 `45 I - 13 " ♦ • 120 - — ` • BOTTOM OF BORING AT 49 FEET -50 . , COMPLETED 6/II/60 - 1 NOTE. OBSERVATION WELL DESTROYED. GROUNDWATER LEVELS WERE NOT ` OBTAINED. •55 r • -60 , -r[. . . F - . • • • `70 , -75 ' • •80 ' -85 . i - I I ' 1 • -100 1 . I 2 5 10 20 50 100 0 O.S 1.0 1.5 2.0-25 10 31 4.0 41 • NATURAL WATER CONTENT (Percent)• ' NOTE s n GROUNDWATER LEVEL SAMPLING SHEAR STRENGTH TESTS OTHER TESTS z.1 Soil descriptions ore interpre- Water Level (Date) ® 2"0.D. Spill Spoon Sample 0 Unconsolidated Undrained MA Mechanical Analysis five and actual changes may ATD-At Time of Drilling Triasiol iIY M rometer • De gradual. D 3"O.D. Shelby Tube Sample 7d A• Torvane CA Combined Analysis Bentonite Seal m 3"0.0. Pitcher Tube Sample 0 Pocket Penetrometer* No Recovery CT Consolidation Test •• I, Observation Well Tip 0 Unconfined Compression CU Consolidated Un • - • U or Slotted Section WATER CONTENT drained :t ed Triasiai CD Consolidated Plastic Limit I-41-4 Liquid Limit• Drained TTIas101 -n ... . • •• • (Percent) Natural Water (Percent) /� ... .. .Teel�. ... Content y/ - (Percent) [° DS Direct Shear Test V _ .1-712-30 tee0 CD .. NAMT-CNOWSE11.6. lets, Inc. • r' ---IP--------7---------t- - . . . . BORING LOG 8-59 SOIL INTERPRETATION STANDARD PENETRATION RESISTANCE UNDRAINED SHEAR STRENGTH OTHER TESTS (140 Dound Wi,pnl, 30,icn Pool rest)l ' BORING CCOPDINATES. N 2te,7e5. E I.e35.357 Depth BLOWS PER FEET • Groton S'Wrleco Elevation Aporo,HM(oy 125 Feet Elevation 'feet Same(e I 2 S 10 20 50 100 0 05 10 15 20 23 10 5.5 40 4.5 I _ '- CONCRETE SIDEWALK. I I I I it MEDIUM DENSE. DAMP, BROWN, VERY SILTY , • FINE SAND. TRACE OF FINE GRAVEL. I I I • y I , 2 44 BECOMING LOOSE. MOIST. MOTTLED. BROWN 3 - TO GRAY FILL WITH ORGANIC CONTENT. 10 4 6 A 7 .. ;',.31 __ (FILL( 5 • MEDIUM STIFF, WET. CLAYEY. VERY SANDY 15 t-� * - .—,.�� SILT. 6 U - I • . I .. r • • ... .. . 7 I .. I . n MEDIUM STIFF, MODERATE TO SUBSTANTIALLY .2© e r ,,,• ( 1. r Ij•,!'. P i • I - l .a j ➢ I ( I ' 1 ORGANIC SILT. TRACE OF WOOD. (TOPSOIL; ` A /. �'' ,+ ( • ' i k i 1 1 [ ( .-c, I 1 I a .� H.MOISTTOSATURATED; _irji f +BEDDED WITH MEDIVM DENSE TO DENSE, MOIST 1 "2y ,. I�1f�r ;;h,.0 ti , , ' TO WET. BROWN TO RUST MOTTLED, SILTY FINE ? SAND AND SILT. SILT CONTENT INCREASES t0 y ••« w. •�I Ii,I, I �if'!,I 1 1 I WITH DEPTH. A + I !t r'r •-, 110 -. I ;-I{;ij I;j®:'�-::•�i. Q I'�ti,: I mil aim -,.-. . y ( -.-.. l I , I + ti ; ] 35• to ;_.; : iI, , ,;} I �_l__ __ 1 1 jII 'I •'! r I 40, , 'I I i z. HARD, MOIST, BROWN. SI.InNT.V .RAVELLY. I 45 i VERY FINE SANDY SILT. LOCAL POCKETS i OF SILTY SAND. NOT REACTIVE WITf HYDRO- I .,� . • .• CHLORIC ACID. ,•, (VASHOM TILL) . . . . . . .. '� I- . . .. �y. , ,• Y ^50 III 6..I — _. �.__... . . . , . „.. .......... . o 4 I . 1 I i... -....�.. W !e A - _ .._ . . -. . 0 -lam---- .. \ B - HARD, MOIST, GRAY, VERY FINE TO SANDY -SS o I -- , -w -•. • SILT. NOT REACTIVE WITH HYDROCHLORICt•- 1f ( �-� ......1.____......._______ '-� ACID. N . ' .,. .. • " 199 ' Ana _..._„_...._ __.�...... ... .__..._..._. ._...r_._.-.._.. • .. _.. ,..._. 66 - m ra I �_ ;1., BOTTOM OF BORING AT 59 FEET -60 " I- c TI ! -. COMPLETED A/29/00 63 ( I�' • 1 _�._ • I • 73 iI I ' ,1! .,,, ri rj, FT , , r i � I n ._ .,.. ......_ ... . . .... .. . . , .. l I 'N I .,T ,l L i',!. ill j - 1 i i si ';I: ' ! ' ltb 1. , -- 1 1 � II I Ili i:; I� ;IiIII� ...._ ., H 1:2 ' Ire•. :I' . _ '' 1 nil : . ,..Y..„� ,,pA .'(iyAx... - I rG. {,, t.. :_( ��, i _ E ST1 0_ , '1 `, ,.,- ,.. .. �L rit::,1"•,, 2't'.;� IS,.- }. I, ,. '1 !, ;i,,, it i • ,..-..`.. ..r.- ...........- 4 ] • ., •.' 1 I ' + I ` elf - ,,C( .00.° i!,9L.:D,!-; i. r:IF�r .... . .. .GE dS ,,;:t�•. Y1il"" p l. • Iy4.- 6, I,' I1 j1I1i IIllI I ( I I , } ' LI I -93 -100 . I 2 5 10 20 50 10O 0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 NATURAL WATER CONTENT (Percent)• NOTE, 2 GROUNDWATER LEVEL SAMPI.INC7 SHEAR STRENGTH TESTS OTHER TESTS Soil doscrip►ions ore interpre- al_ Water Level (Date) ® 2"0.0. Split Spoon Sample 0 Unconsolidated Undroined MA Mechanical Analysis five and actual changes may I ATD-At Time of Drilling Triosial be gradual. ID 3"O.D. Shelby Tube Sample HY Hydrometer . . ._ Torvane Bentonite Scol Z 3"O.D:Pitcher Tube Sample CA Combined Analysis • No Recovery0 Pocket Penetrometer l, CT Consolidation Taal 1 ; .Observation Well Tip O Unconfined Compression mi CU Consolidated Un- Lj or Slotted Section drained Triatial WATER CONTENT Test - Plastic Limit I---O-- .4 Liquid Limit CD Consolidated (Percent) (Percent) Drained. Triauial _11 Natural water Test •,n (Percent) DS Direct Shear Test V • - J-712-30 Mao -a NART-CROwafR a life. Inc. I • nr • • . DEPARTMENT/DIVISION DATE PREP. • • TRANSMITTED BY: .. . • RECORDS TRANSMITTAL • • • CITY CLERK'S OFFICE . CITY OF RENTON RECEIVED BY: DATE RECD. APPROVAL: OC TI N::«•»: • :.:.::..:.......:. ............ .......:::.::.:::.:::::::.:..:.....:.:....:....:.:.: A..S: T.E................::.....:.,:.:..:.lNCLU.S.1.V.�::.:., ..::.#i. ITJ.ON,;:.:::.:::.::D.E$TEiUGT<: ;: ::s>:.:>::»::>.>::: • - Y1-()&11- • • S Pr— Bg — 0 9 I (voek4 ®t3�