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Home My WebLink AboutSWP273531 (15)Wetland/Stream Study: Hawks Landing Crowne Plaza Hotel t1� Prepared for: oQ 100 Q'��' \ y�Ci� Dan Mitzel Hawk's Landing LLC 1111 Cleveland Ave. Mount Vernon, WA 98273 Prepared by: �y Graham -Bunting Associates Environmental & Land Use Services 3643 Legg Road, Bow, WA 98232 Ph.360.766.4441 Fx. 360.766 4443 May 12, 2009 Table of Contents Section/Subsection Paae Project Summary---------------------------------------------------------- 1.0 Introduction------------------------------------------------------------ 1 2.0 Existing Conditions --------------------------------------------------- 1 3.0 Project Description---------------------------------------------------- 3 4.0 Existing Information -------------------------------------------------- 3 4.1 National Wetland Inventory -------------------------------- 3 4.2 Soil Survey of King County -------------------------------- 4 4.3 May Creek Basin Action Plan ------------------------------ 5 4.4 Barbee Mill (BA) --------------------------------------------- 5 4.5 Fawcett Property Wetland Delineation -------------------- 5 4.6 Forest Practice Activity Map ------------------------------- 5 5.0 Stream Study----------------------------------------------------------- 5 5.1 Riparian Functions ------------------------------------------- 5 5.2 Ordinary High Water Mark --------------------------------- 7 5.3 Stream Classification and Regulations -------------------- 8 6.0 Wetland Study ---------------------------------------------- ---------- 9 6.1 Methodology -------------------------------------------------- 9 6.2 Findings------------------------------------------------------- 10 6.3 Data Summary Table ---------------------------------------- 11 6.4 Data Digest --------------------------------------------------- 11 6.5 Wetland Classification and Regulations ------------------ 12 7.0 Regulatory Summary and Mitigation Measures ------------------ 13 7.1 May Creek ---------------------------------------------------- 13 7.2 Drainage Ditch (Class 5 Water) ---------------------------- 14 7.3 Wetlands A and B-------------------------------------------- 14 7.4 Drainage Ditch (nonregulated wetland) ------------------- 14 7.5 Water Quality------------------------------------------------- 14 8.0 Closure------------------------------------------------------------------- 14 9.0 References-------------------------------------------------------------- 15 Attachments Wetland Delineation and Stream Studv Existing Conditions Site Plan ---- Attachment A Proposed Conditions ------- Wetland Field Data Forms Oraham-Bunting.-lssociates i Hawks Landing Alav 2009 Attachment B Attachment C Fnvironmental &Land Lse Services PROJECT SUMMARY Project: Construction of a 5 story, 122,000 square foot, 173 room hotel including underground parking and ground level parking. Project Site: The project site is a 3.06-acre area situated on a triangular shaped parcel of approximately 7.8 acres. The subject property is bordered by Interstate 405 in the east, Lake Washington Boulevard in the west and an undeveloped parcel to the south. Project Location: The subject property is located at the southwest corner of the Interstate 405 and Lake Washington Boulevard/N.E. 44`h Street exit at 4350 Lake Washington Boulevard North, within portions of Sections 29 and 32, Township 24 North, Range 5 East, W.M., King County, WA. King County Parcel Number: 3224059049. Project Proponent: Dan MitzeI Hawk's Landing LLC I I I I Cleveland Ave. Mount Vernon, WA 98273 Methods: Wetland — Routine On -Site Methodology, 1987 Corps of Engineers Wetland Delineation Manual (Technical Report Y-97- 1) - Corps Interim Regional Supplement, April 2008 Washington State Wetlands Identification and Delineation Manual, March 1997, Ecology Publication #96-94 City of Renton Critical Area Regulation: RMC 4-3-050 City of Renton Shoreline Master Program: RMC 4-3-090 Field Dates: March 23, April 8, April 14 and April 24, 2009 Streams & Wetlands: May Creek — Class 1 Water, Shoreline of the State Drainage ditch — Class 5 Water/Nonregulated Wetland Wetland A — 433 square foot Category 2 Wetland Wetland B — 481 square foot Category 2 Wetland Proposed Mitigation: Subject proposal will avoid any direct impacts to regulated streams and wetlands by maintaining setback/buffers that exceed the standards of the City's Critical Area Regulations and Shoreline Master Program. Project Staff. l3rahcnn-Bunting .4ssociates hawks Landinq Alav 2009 Patricia Bunting, Wetland Ecologist PWS Oscar Graham, Wetland Ecologist ii Fnvironmental & Land Lse Semites Graham -Bunting Associates May 12, 2009 Environmental & Land Use Services 3643 Legg Road, Bow, WA 98232 Dan Mitzel Ph.360.766.4441 Fx. 360.766 4443 Hawk's Landing LLC I I I I Cleveland Ave. Mount Vernon, WA 98273 Stream/Wetland Study (Portions of Section 29 & 32 Township 24 north, Range 5 East, W.M., Renton, WA) 1.0 Introduction At the request of Hawks Landing LLC, Graham -Bunting Associates (GBA) have conducted a site investigation and prepared the following report addressing streams and wetlands within and adjacent to the site of the proposed Hawk's Landing Crowne Plaza Hotel. The report addresses the stream and wetland study requirements established under the City of Renton's Critical Areas Regulations (RMC 4-3-050). The report includes a characterization of existing conditions, project description, summary of existing information sources and a narrative description of our investigative procedures and findings. The report includes plan sheets prepared by Sound Development Group depicting existing and proposed site conditions. 2.0 Existing Conditions The subject property is located at the southwest corner of the Interstate 405 and Lake Washington Boulevard/N.E. 44"' Street exit at 4350 Lake Washington Boulevard North, within portions of Sections 29 and 32, Township 24 North, Range 5 East, W.M., King County, WA. King County Parcel Number: 3224059049. N i Figure 1 -Terraserver: USGS (1983) Figure 2 - Microsoft Corp.: Virtual Earth (2008) The project site is a 3.06-acre area situated on a triangular shaped parcel of approximately 7.8 acres. The subject property is bordered by Interstate 405 in the east, Lake Washington Boulevard in the west and an undeveloped parcel to the south. The property is currently occupied by Pan Abode Cedar Homes and is developed with metal warehouses used for manufacturing and storing materials associated with the production of cedar homes. An administrative office is also located on the site. The buildings are constructed on a fill pad surfaced with crushed rock and asphalt. The site has been fully developed for industrial purposes. Graham -Bunting Associates 1 Environmental & Land Use Services Hawks Landing Assessment (5/12/09) Little native vegetation exists within the subject property itself The eastern and western perimeters, predominantly within the right of ways of I-405 and Lake Washington Boulevard exhibit a mix of native and invasive plant species. Trees consist of red alder (Alnus nibra), paper birch (Betula papyrifera), black cottonwood (Populus balsimifera) and Western red cedar (Thuja plicata). Shrubs are dominated by Himalayan blackberry (Rubes discolor), red osier dogwood (Cornus stolonifera), Indian plum (Oemleria cerasiformis), Japanese knotweed (Polygonum cuspidatum) and sword fern (Polystichum munitum). An open drainage ditch located between the project site and Lake Washington Boulevard exhibits a small community of cattail (Typha latifolia) and a thick mat of reed canarygrass (Phalaris arundinacea). The parcel located south of the subject property includes lower May Creek and its associated riparian corridor. The distance from the subject property to May Creek varies from 235 feet in the east (adjacent to the on -ramp to I-405) to 58 feet in the west (adjacent to Lake Washington Boulevard). A mature deciduous forest consisting of large black cottonwood (16"- 36" dbh), alder and big leaf maple (Ater macrophyllum) dominates the riparian corridor. The understory includes vigorous colonies of invasive blackberry and Japanese knotweed, salmonberry (Rubus spectabilis), reed canarygrass and sword fern. A small community of slough sedge (Carex obnupta) was observed in conjunction with a wetland identified along the right bank of May Creek. The subject property is predominantly flat, however, the northern portion of the site, adjacent to the entrance of the existing Pan Abode facility, resembles a bowl shaped depression designed to receive stormwater runoff from multiple catch basins located along the southbound on -ramp to I- 405 and Lake Washington Boulevard. Stormwater runoff from the catch basins is transmitted to the northern portion of the subject property and discharged to the northern end of the open drainage ditch, located along the eastern right of way of Lake Washington Boulevard. Stormwater from the subject property is also collected and discharged to the ditch at this location. The open ditch extends approximately 500 feet to the south where it enters a buried 24-inch corrugated plastic pipe that flows an additional 60 feet south before discharging to May Creek. Additional drainage enters the ditch from the subject property near the entrance to the buried pipe. May creek flows into Lake Washington approximately .25 miles southwest of the subject property. (Attachment A: Existing Conditions Site Map) Graham -Bunting Associates 2 Envirunmenial & Land Use Services Hmvks Landing Assessment (5/12/09) 3.0 Project Description The proposal is to demolish the existing structures associated with the Pan Abode facility and utilize approximately 3.06 acres of the subject property for construction of a 5 story, 122,000 square foot, 173 room hotel. The proposed Hawks Landing Crowne Plaza Hotel will consist of: • One level of underground parking with approximately 107 stalls • Ground floor hotel reception area with meeting rooms and approximately 742 square feet, 2,152 square feet, and 3,360 square feet for retail, spa and restaurant facilities respectively • Four levels of guestrooms • A total of approximately 126 surface level parking stalls, including five spaces designated for Neighborhood Electric Vehicles (NEVs)) • Two access points along Lake Washington Boulevard • Storm water facilities including rain gardens • Sanitary sewer, water and other utilities Preliminary designs indicate that the hotel will maintain a maximum height of 60 feet. Required land use permits include site plan review, environmental review pursuant to the State Environmental Policv Act (SEPA), building permits and a street vacation. All development including required infrastructure will be located a minimum of 277 feet landward of the ordinary high water mark (OHWM) of May Creek. (Attachment B: Proposed Conditions) 4.0 Existing Information The subject property has been addressed under a number of existing studies. These information sources have been reviewed and synthesized to assist GBA in characterizing the subject property. The sources are summarized as follow-: 4.1 National Wetland Inventory The National Wetland Inventory (NWI) is compiled by the U.S. Department of Interior's Fish and Wildlife Service. NWI relies upon -visual aerial photo interpretation of wetland indicators including hydrologic, vegetation and topographic signatures. NWI does not identify wetlands within the vicinity of the subject property. It should be recognized however, that the forest canopy associated with the riparian corridor of May Creek would likely obscure the indicators upon which NWI relies. GBA utilize NWI only as a generalized map indication of the possible Graham -Bunting Associates 3 Environmental & Land Use Services Hawks Landing Assessment (5112109) presence and extent of wetlands. Reconnaissance and delineation procedures are always based on an on -site assessment. 4.2 Soil Surve of f King County, Area Washin tg_on The Soil Survey is compiled by the Natural Resources Conservation Service and includes mapped soil units registered to detailed descriptions of soil characteristics. The survey identifies one soil unit within the subject property boundaries. The map unit appears to include the entire floodplain associated with lower May Creek. No -Norma sandy loam is a poorly drained soil typically found on floodplains with slopes between 0 and 2 percent. The parent material is alluvium. Minor components include Seattle, Tukwila and Shalcar soils. Norma sandy loam is listed as a hydric soil under criteria 1., 2. b) (3) and 3. 1, All Histosols except folists 2. Soil in Aquic suborders, great groups, or subgroups, Albolls suborder, Aquisalids, Pachic subgroups, or Cumulic subgroups that are: b) poorly drained or very poorly drained and have either: (3) water table equal to 1.0 feet from the surface during the growing season if permeability is less than 6.0 inches/hour in any layer within 20 inches. 3. Soils that are frequently ponded for long duration or very long duration during the growing season. Figure 3 - National Wetland Inventory Figure 4 - Soil Survey http:/hretlandsAvs.er.usgs.gOv/ htip://N�ebsoilstin-eN-.nrcs.usda.gov/app 4.3 May Creek Basin Action Plan (April 2001) The May Creek Basin Action Plan was funded by King County and the City of Renton outlines a set of actions addressing the threat of flooding, facilitation of stormwater conveyance to stabilize stream banks and reduce erosion, protect and enhance fish and wildlife habitat and water quality. The plan is intended to prevent existing problems within the basin from becoming worse in the Graham -Bun ft Associates 4 Environmental & Land Use Services Hawks Landing Assessment (5112109 future. The plan provides baseline information relating to conditions in the basin including a map sheet reflecting the approximate location and extent of wetlands. It is noteworthy that the wetland map identifies a small wetland in the vicinity of the drainage ditch described under existing conditions. 4.4 Biological Assessment: Barbee Mill Preliminary Plat (August 2002) Racdke Associates, Inc. prepared a Biological Assessment (BA) consistent with the requirements of the Endangered Species Act to evaluate potential effects of the proposed subdivision on federal and state listed species. The BA includes a characterization of May Creek and Lake Washington, documents species use, and identifies mitigating conditions to ameliorate project generated impacts to listed species. The Barbee Mill development is located just west of Lake Washington Boulevard adjacent to the subject property. 4.5 Wetland Delineation Report Fawcett Property (December 2000) Associated Earth Sciences, Inc. prepared a Wetland Delineation Report addressing a portion of the area located south of the subject property. While the contiguous area south of the subject property is under the ownership of Dr. Greg Fawcett, the delineation focused only on the area south of May Creek. The report includes observations relating to May Creek and hydrology, soil and vegetation within the riparian corridor. 4.6 Forest Practice Activi y Map The Washington State Department of Natural Resources maps and classifies waters of the state pursuant to WAC 222-16-031 on the Forest Practice Stream Type Maps. The maps were reviewed to assist in characterizing the project area. May Creek is identified as an S (Shoreline) Water of the State. Type S waters are defined as: "All waters, within their bankfull width, as inventoried as `shorelines of the state' under chapter 90.58 RCW and the rules promulgated pursuant to chapter 90.58 RCW including periodically inundated areas of their associated wetlands. No additional Waters of the State were identified on the Stream Type Maps. 5.0 Stream Study May Creek originates from the outlet of Lake Kathleen and flows westerly approximately 8.6 miles to Lake Washington. The May Creek watershed drains approximately 14 square miles of residential, open space, agricultural, commercial, industrial and public infrastructure development including runoff from 1-405. The stream reach located south of the subject property lies between the I405 bridge crossing in the east and the Lake Washington Boulevard bridge crossing in the west. This reach of May Creek is identified as Reach B and characterized in the City of Renton Draft Shoreline Inventory and Analysis as relatively unaltered (Renton Draft Shoreline Inventorv. November 2008) " 5.1 Riparian Functions Observations gathered during our site investigation, conducted during the early spring of 2009, indicate a high level of in stream and riparian corridor functions. The stream is low gradient (< 8%) and displays a complex of low velocity pools mixed with swifter moving riffles and runs. 1n stream structure is provided by naturally recruited large woody debris (LWD) consisting of native deciduous species and installed habitat features including anchored root wads and cabled logs. Riparian functions are closely linked to vegetation along the stream bank and adjacent floodplain. Graham-Bunting.9ssociates 5 Environmental & Land (Ise ,Semites Kcnvks Landing Assessment (5i 12109) LWD Recruitment - While large conifers are generally the preferred source of LWD, the presence of mature deciduous species throughout the stream reach provides an ongoing source for recruitment of woody material into the stream. LWD promotes complexity within the stream and provides holding areas for salmonids and resident fish species. Bank Stability - The three strata vegetation community along the riparian corridor promotes bank stability through establishment of deep root systems. The anchored roots help hold the sandy loam of the floodplain intact and minimize the forces of erosion, sedimentation and increased turbidity. Reed canarygrass, often viewed as an undesirable species, is very effective in promoting bank stabilization. Unfortunately it also may colonize aggressively reducing the diversity of native plant species. Shade - The deciduous tree canopy provides shade during low flow summer months and helps to maintain cool temperatures and maintain dissolved oxygen levels required by salmonids and resident fish species. Water Quality - Emergent vegetation including vigorous communities of reed canarygrass contiguous to the OHWM provide for the filtering of sediments and pollutants. Reed canarygrass is viewed as an invasive species; however, its dense mat like quality provides an excellent filtering function that helps prevent delivery of sediments and pollutants to receiving waters. Photo 5 - View upstream (east) showing LWD and riparian vegetation south of subject property. Photo 6 - View of installed habitat feature consisting of root wad (right) anchored to rock (left) with chain located near I405 bridge. Fish and Wildlife Habitat - While no salmonids or resident fish species were observed during our site investigation, May Creek is reportedly utilized by Chinook (Oncorhynchus tshawytscha), Coho (Oncorhynchus kisutch) and Sockeye (Oncorhynchus nerka) salmon. Winter steelhead (Oncorhynchus mykiss) and cutthroat trout (Salmo clarki clarki) are also known to utilize the creek. (Renton Draft Shoreline Inventory, November 2008). Puget Sound Chinook salmon and Puget Sound steelhead are listed as threatened under the Federal Endangered Species Act (ESA). Puget Sound/Strait of Georgia Coho salmon are listed as a candidate species under ESA. May Creek does not have a self sustaining Chinook run. Chinook observed in May Creek are likely strays from the Cedar River (Lucchette 2002). Coho are known to utilize Lake Washington and May Creek. Coho runs in Lake Washington are heavily influenced by hatchery production (Raedeke 2002). Puget Sound Steelhead have utilized Mav Creek on a historic basis and may remain present in depressed numbers (Salmonscape 2009). A Graham -Bunting Associates 6 Environmental & Land Use Services Hawks Landing Assessment (5112109) review of pertinent literature relating to Lake Washington salmonid stocks indicates a high degree of uncertainty as to the genetic origins of salmonids utilizing May Creek. It is possible that individuals from the Puget Sound and Puget Sound Strait of Georgia Evolutionary Significant Units (ESUs) utilize the habitat provided by the creek. The riparian area provides excellent feeding and cover habitat for birds, including woodland hawks and passerine species. Small mammals such as voles utilize uplands within the riparian area for burrowing. GBA observed blacktail deer (Odocoileus hemionus columbianus) droppings and hoof prints within the riparian corridor. Common snipe (Capella gallinago) were flushed during several site inspections at a location near the bridge crossing at Lake Washington Boulevard. A short tailed weasel (Mustela erminea) was also observed burrowing in the rip rap near the bridge abutment. A pair of Osprey (Pandion haliatus) was observed perched on a nest platform near the mouth of May Creek. Additional species were observed during our site investigation including: song sparrow (Melospiza melodia) house finch (Carpodacus mexicanus) black -capped chickadee (Poecile atricapilla) hairy woodpecker (Picoides villosus) spotted towhee (Pipdo maculatus) winter wren (Troglodytes troglodytes) mallard hen and drake (Anas platyrhynchos) unidentified buteo (Buteo sp.) American crow (Corvus brachyrhynchos) gull species (Larus sp.) 5.2 Ordinary High Water Mark GBA reviewed the location of the OHWM as identified and flagged in the field by David Evans Associates (DEA) in 2006 and Sound Development Group (SDG) in 2009. The guidance contained in the statutory definition was utilized in confirming the location of the OHWM. "The Ordinary high water mark on all lakes, streams and tidal water is that mark that will be found by examining the beds and banks and ascertaining where the presence and action of waters are so common and usual, and so long continues i all ordinary years, as to mark upon the soil a character distinct from that of the abutting upland, in respect to vegetation as that condition exists on June 1, 1971 or as it may naturally change thereafter; PROVIDED, that in anv area where the ordinary high water mark cannot be found, the ordinary high water mark adjoining salt water shall be the line of mean higher high tide and the ordinary high water mark adjoining fresh water shall be the line of mean high water." In addition, the definition contained in the Renton Municipal Code under 4-11-010 was also considered. Review was aided by a series of high water events occurring during the late winter and early spring of 2009. These one to two year flows generally correlated with the physical evidence observed along the bank of the creek. The OHWM was identified based on scour and drift lines, sediment deposits, topographic features and vegetation transitions located at or near the top of the right bank. It was not deemed necessary to adjust any of the flags placed previously by DEA and SDG. The OHWM as flagged was surveyed and is depicted on the map sheets accompanying this report. Graham-Bunting.l ssociates 7 Environmental & Land Use .Services Hawks Landing.=l.vvessment (5/12109) 0 H W M Photo 7 — View upstream (east) showing the OHWM located at the landward extent of a sandbar and transition to persistent vegetation. 5.3 Stream Classification and Regulations The City's Critical Area Regulations RMC 4-3-050 classify May Creek as a Class 1 water. Class I Waters are perennial salmon bearing waters classified by the City and State as Shorelines of the State. Subsection L. Streams and Lakes: 1. Applicability/Lands to Which These Regulations Apply stipulates that the City's critical area regulations do not apply to Class 1 waters which are regulated by RMC 4-3-090, Shoreline Master Program Regulations. Subsection 4-3-090, 5, d. establishes the standard setback for commercial development as follows: "A commercial building should be located no closer than fifty (50') to the ordinary high water mark; however, the Land Use Hearing Examiner may reduce this requirement through the variance process for good reason for those structures that allow public access to and along the waters edge." All development related to the proposed Hawk's Landing Crowne Plaza Hotel will be located a minimum of 248 feet landward of the OHWM of May Creek. The subject proposal is located outside of the 200-foot jurisdictional area of the Shoreline Management Act (SMA) and the City's Shoreline Master Program (SMP) and is therefore compliant with the required 50-foot setback requirement. The drainage ditch located predominantly within the right of way of Lake Washington Boulevard was also assessed in light of the City's Critical Area Regulations and identified as a class 5 water. RMC 4-3-050 L. Streams and Lakes: 1. a. v. (a) (b) establishes the criteria for Class 5 waters as follows: "v. Class 5: Class 5 waters are non -regulated non salmonid-bearing waters which meet one or more of the following criteria: (a) Flow within an artificially constructed channel where no naturally defined channel had previously existed; and or (b) Are a surficially isolated water body less than one-half (0.5) acre (e.g. pond) not meeting the criteria for a wetland as defined in subsection M. of this section." Graham -Bunting Associates 8 Environmental & Land Use Services Hawks Landing Assessment (5112109) GBA conferred on site with the Area Habitat Biologist from the Washington State Department of Fish and Wildlife (WDFW) on April 24, 2009 who provided the following observations and guidance: • The ditch is a man made feature • Work within the ditch itself will not require Hydraulic Project Approval (HPA) from WDFW • Work on the outfall to May Creek would require an HPA • Any proposed improvement to the outfall should prevent entry of fish to the ditch Based on observations gathered during our site investigation and consultation with the Area Habitat Biologist, GBA have determined that the drainage ditch is a non -salmon bearing water. The location and profile of the ditch indicate that it is an artificially constructed channel designed and actively maintained to convey stormwater runoff from I405, Lake Washington Boulevard and the Pan Abode facility. GBA have determined that the drainange ditch satisfies Criteria (a) as a Class 5 Water and is therefore not regulated under the City's Critical Area Regulations. The ditch will be discussed further under the following Wetland Study. 6.0 Wetland Study The following discussion addresses the procedures and methods utilized in our wetland investigation and provides a summary of our findings. 6.1 MethodoloQv GBA utilized the Washington State Wetlands Identification and Delineation Manual (Ecology 1997) which is a revised version of the 1987 Corps of Engineers Wetland Delineation Manual (Technical Report Y-87-1) in the preparation of this report. The Ecology Manual (along with the recent Corps of Engineers regional supplement, April 2008) represents the accepted standard for identifying and delineating wetlands for jurisdictional purposes under the Clean Water Act. GBA considered the new interim regional supplement in the assessment of field data. The Ecology manual has been adopted for use by the City of Renton for use in conjunction with the Growth Management Act mandated Critical Areas Ordinance. Both the Ecology and Corps manuals incorporate the Clean Water Act Definition of Wetlands as follows: -Those areas that are inundated or saturated by surface or groundwater at a frequency and duration sufficient to support and that under normal circumstances do support a prevalence of vegetation typically adapted for life in saturated soil conditions. Wetlands generally include swamps, marshes, bogs and similar areas." The City's Critical Areas Ordinance stipulates additional defining elements as follows "Wetlands do not include those artificial wetlands created from non -wetland sites, including but not limited to, irrigation and drainage ditches, grass lined swales, canals, detention facilities, wastewater treatment facilities, farm ponds, and landscape amenities, or those wetlands created after duly 1, 1990, that were unintentionally created as a result of the construction of a road, street or highway. Wetlands may include those artificial wetlands intentionally created from non -wetland areas created to mitigate conversion of wetlands." Graham-Bunting:lssociates 9 Environmental & Land Use .Services Hawks banding. -assessment (5/1 ? 09) The definition requires that three interrelated defining elements or parameters be established when identifying wetlands. These parameters are wetland hydrology, hydric soils and hydrophytic vegetation. Wetland Hydrology Water is the driving force, which creates and sustains wetlands. The 1987 Manual and subsequent Corps guidance identifies wetlands as areas where soils are inundated or continuously saturated for a minimum of 5% of the growing season (approximately 12.5 days for Western Washington). When direct observation of the water table cannot be made, hydrology is determined by relying upon hydrologic indicators such as hydric soil characteristics, water marks, drift lines, sediment deposits or drainage patterns. Hydric Soils Wetlands exhibit hydric soils. These are soils which are saturated, flooded or ponded long enough during the growing season to develop anaerobic conditions. These are conditions where no free oxygen is present in the upper soil horizons. Typical field indicators of hydric soils are the presence of a thick organic layer, or in predominantly mineral soils such as found on this site, a low chroma matrix (gray color) and/or bright mottling. Soil chromas are determined by comparing soil samples with color chips in the Munsell Color Charts. Hydrophytic Vegetation The U.S. Fish and Wildlife Service has classified wetland vegetation according to its frequency of occurrence in wetlands: Obligate wetland species (OBL) occur in wetlands greater than 99% of the time. Facultative wetland species (FACW) occur in wetlands greater than 67% of the time. Facultative species (FAC) occur in wetlands 34%-66% of the time. Facultative upland species (FACU) occur in wetlands less than 34% of the time. Upland species (UPL) occur in wetlands less than 1% of the time. Generally the hydrophytic vegetation parameter is satisfied when greater than 50% of the species present at a data collection point have an indicator status of OBL, FACW and/or FAC; when two or more dominant species have observed morphological or known physiological adaptations for occurrence in wetlands; or when other indicators of hydrophytic vegetation are present. 6.2 Findings GBA conducted the site investigation on March 23, April 8, April 14 and April 24, 2009. Observations were collected over a period of a month during weather conditions that transitioned from cold and wet to sunny and seasonable. Little plant growth was noted during our initial site visit, however, by mid April plants were exhibiting active growth. Indian plum, salmonberry and elderberry were rapidly leafing out and Japanese knotweed colonies along the bank of May Creek was emerging from dormant rhizomes. GBA consider the timing and weather conditions of our investigation to be optimal for the identification of wetlands. Two areas were investigated: 1) The subject property (Pan Abode facility) and its perimeter including the drainage ditch along Lake Washington Boulevard. and; 2) The floodplain south of the subject property to the right (north) bank of May Creek. Both areas were traversed and visually inspected for indications of wetland hydrology and hydrophytic vegetation. The ordinary high water mark of the drainage ditch was identified and flagged on site. A single data point (DP- 7) was established along the top of the bank. A second data point (DP-2) was assessed just east of the ditch along the southern boundary of the subject property. Three rough transects were established in an cast/west aspect between May Creek and the subject property. Six data points Graham -Bunting Associates 10 F,nvironniental & Land Use ,Services Harks Landing .,l ssessnient (5 12; 09) (DPs 1,3,4,5,6,8) were assessed in the floodplain or riparian corridor of May Creek. Soil evaluation pits were excavated to a uniform depth of 21 inches. Hydrology, soil and vegetation were assessed at each data point. Data collected on site was recorded on data forms and field notes. Photographs documented appropriate visual images. Data collected is summarized in the following table. (Attachment C: Wetland Field Data Forms) 6.3 Data Summary Table DP Hydrology Soil Dominant Vegetation Status *oxidized *sandy loam 2.5Y *Populus balsamifera FAC (20%) rhizospheres — 4/2 — rhizospheres — Alnus rubra FAC (20%) 1 fac neutral — sandy redox Cornus stolonifera FACW (50%) Wet geomorphic Carex obnupta OBL (80%) position no indicators gravelly loam — *Alnus rubra FAC (2%) 2 IOYR 4/3 Rubus discolor FACU (25%) Up Phalaris arundinacea FACW (95%) no indicators silt loam — IOYR Populus balsamifera FAC (30%) 3 1 3/3 Rubus discolor FACU (100%) U no indicators silt loam 10YR 3/3 *Populus balsamifera FAC (101/o) 4 Alnus rubra FAC (10%) Up Phalaris arundinacea FACW (100%) no indicators silty clay loam Alnus rubra FAC (60%) 5 IOYR 2/2 Rubus discolor FACU (100%) U *water table @ 8" *silty clay loam *Alnus rubra FAC (60%) 6 — saturated to 2.5Y 3/1 — 10% Rubus discolor FACU (60%) Wet surface mottles 7.5YR 4/6 Rubus s ectabilis FAC (30%) Saturation @ 15" gravelly silt loam *Populus balsamifera FAC (80%) 7 IOYR 2/2 Rubus discolor FACU (20%) Up Rununculus re ens FACW (5%) saturation below sandy loam 2.5 Y *Alnus rubra FAC (20%) 8 20" 4/4 Rubus discolor FACU (20%) Up Cornus stoloni era FACW (20%) *Wetland parameter satisfied 6.4 Data Digest Based on the above data summarized above, two regulated wetlands were identified: Wetlands A and B are small depressional wetlands located within the floodplain of May Creek with areas of 433 and 481 square feet respectively. The wetlands receive their hydraulic charge from a seasonal high water table, precipitation and periodic overbank flooding of May Creek. The wetlands are distinguished from the surrounding uplands because they are distinct topographic features, exhibit saturated soils and are dominated by hydrophytic vegetation. Wetland A is a deep depression with observable hydrology at the soil surface. Soil displays a very dark matrix chroma accompanied by mottles. Vegetation is dominated by a mix of facultative plant species. Wetland B is a gentler depression which exhibits only secondary indicators of wetland hydrology with saturation present well below the soil surface. Soil is sandier and lighter by comparison and vegetation includes a vigorous community of slough sedge (OBL). In addition to Wetlands A and B, the drainage ditch along Lake Washington Boulevard was also assessed in accordance with the wetland identification/delineation methodology. Although a data Graham-Bunting.lssociates 11 Environmental & Land Use Services Hawks Landing Assessment (51121'09) point was not assessed within the ditch itself, the area within the flagged OHWM was determined to satisfy wetland parameters. Standing water was present in much of the 500 linear foot ditch. Soil was silty and likely consists of stormwater sediment from surrounding development. Vegetation is dominated by reed canarygrass. Data point 7, established at the top of bank approximately 20 feet west of the existing Pan Abode facility was assessed to characterize the area lying between the ditch and subject property. No surface water was observed although saturation was present at a depth of approximately 15 inches from the soil surface. Soil consisted of a gravely silt loam, possibly fill from the development of the Pan Abode facility. The soil exhibited a dark matrix chroma (IOYR 2/2) but was not accompanied by redoximorphic features. The subsoil was a very light silty sand (2.5Y 6/6). Vegetation was dominated by a mix of facultative trees, shrubs and herbs. Because the hydrology and soil parameters were not satisfied the data point was determined to be upland. 6.5 Wetland Classification and Regulations Wetlands A and B were classified in accordance with the criteria contained under Subsection 4-3- 050 M. 1. a. ii. of the City's Critical Area Regulations as Category 2 wetlands. Category 2 wetlands are wetlands that meet one of the criteria listed under (a) through (d). Wetlands A and B were found to satisfy criteria (d) below: "(d) Wetlands having minimum existing evidence of human related physical alteration such a diking ditching or channelization... " The majority of the floodplain, including Wetlands A and B, located landward of the right bank of May Creek and south of the subject property has not been subject to human related alteration. The wetlands contribute to the riparian functions discussed under the stream study earlier in this report including LAID recruitment, bank stability, shade, water quality and fish and wildlife habitat. The ,vetlands functional value, however are limited by their small size which represents a combined area of only 914 square feet in a floodplain parcel totaling over 110,000 square feet. RMC 4-3-050 M. 6. c. establishes the standard buffer Nvidth required for Category 2 Wetlands at 50 feet. Required buffers are to be maintained in their natural condition. Buffers are required to be measured from the wetland boundary as surveyed in the field. Wetland A and B are located offsite 117.4 and 63.8 feet south of the subject property respectively. The area between the Graham -Bunting Associates 12 Environn►ental & Land Use Services Hawks LandinQAssessn:ent (5112109) wetlands and the property line remains in a natural condition and is vegetated primarily with native species. RMC 4-3-050 M. 1. e. i. establishes the basis for regulated and non regulated wetlands as follows: "i. Regulated and Nonregulated Wetlands — General: Wetlands created or restored as a part of a mitigation project are regulated wetlands. Regulated wetlands do not include those artificial wetlands intentionally created from nonwetland sites for purposes other than wetland mitigation. including, but not limited to irrigation and drainage ditches, grass lined swales, canals detention facilities, wastewater treatment facilities, farm pond, and landscape amenities, or those wetlands created after July 1, 1990, that were unintentionally created as a result of the construction of a road, street or highway. The department administrator shall determine that a wetland is not regulated on the basis of photographs, statements or other evidence." GBA followed the guidance provided above in assessing the regulatory status of the drainage ditch. The following findings were considered: • The Pan Abode facility was constructed on a fill pad during the mid 1950s • The fill pad appears to extend to a point near the road right of way at the top of ditch • The soil profile assessed at data point 7 displays rock typical of pit run commonly utilized as a fill base • The 2:1 bank profile of the ditch is typical of an excavated stormwater conveyance facility • The hydrology that charges the ditch is composed primarily of stormwater runoff from I- 405, Lake Washington Boulevard and the Pan Abode facility • Unaltered areas within the floodplain south of the subject property do not include natural linear features similar to the ditch • National Wetland Inventory does not identify the ditch as a wetland Based on the above findings GBA determined that the drainage ditch was intentionally created from a nonwetland site for the purpose of stormwater conveyance and is therefore a nonregulated wetland under the City's Critical Area Regulations. While the wetland may not be regulated by the City, the U.S. Army Corps of Engineers and/or Washington State Department of Ecology may assume jurisdiction over the wetland. 7.0 Regulatory Summary/Mitigation Measures The following buffers and setback requirements are registered to proposed project actions: 7.1 May Creek May Creek is a shoreline of the state regulated under the Shoreline Management Act and the Citv of Renton's Shoreline Master Program. The area of jurisdiction under the SMA and SMP extends two hundred feet landward of the OHWM. The closest point of proposed project actions to the OHWM is 277 feet. The setback for commercial buildings from May Creek is currently established under the SMP at 50 feet. The subject property itself is located entirely outside of the required shoreline setback area. The mature deciduous forest located on the parcel south of the subject property varies in width from 64 feet in the west to 235 feet in the east and provides a full range of protective functions (see subsection 5.1 Riparian Functions). Because the riparian corridor is outside of the Graham-Bunting_-lssociates 13 I nvironniental & Land Use Services Hawks Landing Assessment (Si 12%09) subject property boundaries and is not owned by the applicant, GBA have refrained from characterizing the area as a buffer. 7.2 Drainage Ditch The drainage ditch is classified as a Class 5 water. It is a non regulated non salmon bearing water within an artificially constructed channel where no naturally defined channel previously e.Yisted. 7.3 Wetlands A and B Wetlands A and B are Category 2 Wetlands which require 50 foot buffers. Both wetlands are located offsite south of the subject property. Wetland A is 117.4 feet south of the subject property boundary and Wetland B is 63.8 feet south of the subject property. The area between the wetlands and the subject property consists of a mature deciduous forest. Although the uplands surrounding the wetlands are not characterized as buffers, the deciduous forest provides a high level of buffer functions. 7.4 Drainage Ditch The drainage ditch is a nonregulated wetland created from a nonwetland site for the purpose of conveying stormwater. 7.5 Water Quality In addition to the distance of project actions from the regulated stream and wetlands, rain gardens are proposed in conjunction with the project's drainage plan. The site will be designed consistent with the King County Storm Water Design Manual guidelines for stormwater management. It is anticipated that the water quality of drainage leaving the site will represent an improvement over the existing conditions associated with the aging Pan Abode facility. 8.0 Closure GBA employed currently accepted methods of delineating wetlands and characterizing aquatic features on the site. In addition we utilized the guidance provided in the City of Renton's Critical Area Regulations and Shoreline Master Program in identifying appropriate regulatory requirements. Consultation with the Washington State Department of Fish and Wildlife was conducted to determine fish use of May Creek and the drainage ditch and to determine potential hydraulic project approval requirements. The findings and conclusions rendered in this report, however, represent our best professional opinion. Concurrence should be obtained from agencies of jurisdiction prior to initiating land use actions or construction. The report will also provide a sufficient source of information in the event that a jurisdictional determination is requested from the Corps of Engineers. Please call either Patricia Bunting or myself with any questions relating to this report. Sincerely; (OA-- 0,..r4- Oscar Graham Principal Ecologist/Project Lead Graham-Buntin2.9ssociates 14 Kmvks LandingAssessment (5/1 ? '09) Patricia Bunting Wetland Ecologist/PWS Environmental & Land Use Semites 9.0 References Associated Earth Sciences, Inc., December 7, 2000. Wetland Delineation Report Fawcett Property; Renton, WA. Cowardin L., V. Carter, F. Golet, E. LaRoe, 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service. Hitchcock C.L. and A. Cronquist, 1973. Flora of the Pacific Northwest. University of Washington Press, Seattle, 730 pp. King County, April 2001. May Creek Basin Action Plan. Munsell Color. 1994 revised. Munsell Soil Color Charts. Kollmorgen Instruments Corp., Baltimore, MD. Pcjar J. and A. MacKinnon, 1994. Plants of the Pacific Northwest Coast Washington Oregon British Columbia & Alaska. Lone Pine Publishing, Vancouver B. C., 528 pp. Raedke Associates, Inc., August 26, 2002. Biological Assessment, Barbee Mill Preliminary Plat. Reed, PB, Jr. National List of Plant Species that occur in Wetlands; Northwest (Region 9) National Wetlands Inventory, U.S. Fish and Wildlife Service Biological Report 88 (26.9) 89 pp. Renton Draft Shoreline Inventory, November 2008. Sound Development Group, LLC. April 28, 2009. Technical Information Report; Hawks Landing — Crowne Plaza Hotel. U.S. Army Corps of Engineers. 2008. Interim Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region, ed. J.S. Wakeley, R.W.. Lichvar, and C.V. Noble. ERDC/EL TR-08-13. Vicksburg, MS: U.S. Army Engineer Research and Development Center. Vepraskas, Mike. Technical Bulletin 301, 1999, Redoximorphic Features for Identifying Aquic Conditions: North Carolina State University, College of Agriculture and Life Sciences33 pp. Washington State Department of Ecology, March 1997, Washington State Wetlands Identification and Delineation Manual, Ecology Publication #96-94. Washington State Department of Natural Resources Forest Practice Activity Map, �il3usin�ssPcrmits/TosiFl�restPracticcsALplicatiuns Washington State Department of Fish and Wildlife, Personal Communications Fisher, Larry. Area Habitat Biologist, Washington State Department of Fisheries. On site discussion relating to drainage ditch along Lake Washington Blvd. April 24, 2009. Severin, Pat P.E. Project Engineer, Sound Development Group. Project Meetings March through May 12, 2009, Graham -Bunting Associates 15 Environmental & Land UseServices flawks Landing Assessment (5112109) :j; fill -TW() 0UTFAL45 70 114f—rj illi 12 11r,4 60M VF 0"TIZE54TeD .0 D Or rill k4Gk Lf,77 d 1; hi '7 if dill, q "y;'i' I 'il;.V O iji I "�j OEC?4N��RYRK* 1-MAm' I;Qe C614WH) 3F:: 171 I';;;; i ,/I; /111 "z li II /i'j !0 , t lil I �/ II I/�i/r/ q V1 ir J. ;zj; 4) 60114MSIX511 U A- so j" "4 24'CPP-26 % f DP Sound Development Group SURVEYING & LAND MM 0AWINT JW WM P.O. Box 1705 - I I I I Cleveland Avenue, Suite 202 Mount Vernon, WA 98273 Tel., J60-404-2010 Fax: 360-404-2013 IN A FV�K I 1UN OF SECT/UN 29, 4? 1 & 32 TWN 24 N., RANGE 5 E, WA4. V ''C EL co 320) RM. 42,31 USIN 1 4 - 3631 2 IE 12: S - 3761 EX, CS 3206 '�4 M C8 M7 FdM - 41,93 f 24: W 36. 3 C 24 SO 36.73 f 12* M 37.33 ,1- F-hM 4CB IE 12: M :4296, 1 1. El 3414 E :' 2994 k 6' PIE - 29.99 EX. C8 3204 FdM - 41.70 11 1 31.11 '1 24: 37.05 Legend (D DP = Wetland Data Point Delineated Wetland Ply) Existing vegetation U--'r Ill till 'k X'. , ", -7 it l � l 11 /l l i l` I f `M1/' / - �T-- -- --- _ ��-J I :'�7— s l`.+�• \ � \ Q ---------- It I hl! It—/,— V A OLA k- .2 Li L i SO -1 m SD— 50 so_' o so SE) FI SD SE) _.SD,,, ®DP 4 D1` 3 W(TH CLAu-vea-r Ut4pMT697-f EXISTING ORDINARY HIGH �D�P6 CWETLAND 'A' DUSTING WATER MARK OF 433 S.F. WETLAND 'B' ♦CREEK DIP 5 CATEGORY '2' 481 S.F. CATEGORY '2' Al SCALE 1- = 100' NORTH 1W FROAL7 Wetland Delineation & Stream Study Prepared by: Wetland Delineation and Stream Study peper PSEFjAu HAWK'S LANDING - CROWNE PLAZA HOTEL r P5EMIN Graham -Bunting Associates afamoy P-qMIN FOR Environmental & Land Use Services Existing Conditions MD'a HAWK'S LANDING, LLC 3643 Legg Rd., Bow, WA 98232 Site Plan &TE . A44 Y 7, 2009 EfiVrOft WA94KCWN Ph: 360.766.4441 Fx: 360.766.4443 Attachment I i A i IN A PORTION OF SECTION 29, & 32 TwN 24 N., RANGE 5 E, W.M. A portion of the ditch is proposed to be filled to allow for a sidewalk along Lake Washington A Boulev 4 ard. 11 �10 q! Proposed Buildin 9 Footprint -0 jI 'AfMMINATLY (ZJ 17J4 IbWafok%� 01 11! Ice fAPLiQG 6M�4 ;z ij V VIC-\ 4 icz! er Jz! ;I'la.l .I 7 � z ----------- I.;J 10 i I i 'End of construct - - -- ------ J i7on - - - - - - - - - - - - - - - - - - - - - - -- ORDINARY HIGH V WATER MARK OF DITCH_ — 7" 4 LE J, ". ;i: : i ;: I I V1. 11 'r— SD — SU ------ :6 SD —SO Aso— s; GDP 4 4 GDP 3 J DP Pi EXISTING q, ORDINARY HIGH WETLAND 'A'EXISTING WATER MARK OF 433 S.F. WETLAND V CREEK 7*DP S CATEGORY 7 Note: This is a reduced site plan of the proposed project. The original drawing should be consulted for any detailed information. 481 SF 1-1 % aft—, CATEGORY 7 11-1, (::� 5d I OCl/VN 6 W.r -LASS SCALE 1- 10 kj,/ CREc Attachment B NORTH 9WTDWIP70Y SCVf W PROlfCT NO. CALL 48 HOURS Sound Development Group MWWY. PAu HAWKS LANDING - CROWNE PLAZA HOTEL BEFORE YOU DIG ENGAMIA< SUk VEYING & L4MD DfM OPAIFAff SER OM DMW BY: PSEMIN D" KVIC AbW FOR EnykamnoWd & Lwd Use SaWm P.O- Box 1705 - It II Cleveland Avenue, Suite 202 PROPOSED CONDITIONS afam or PSEMIN 8n9XC Mount Vemon, WA 98273 #67 1-800-424-5555 303 Lw Ra&4 Bow. WA- 9032 i " . IRD #000AGE P&MO. M4"] ft 7M4"3 Tel., 360_404 -2010 Fax: 360-404-2013 HAWKS LANDING, LLC DAM' A44 Y 72009 1 - . ROMAX WARVX70N Wetland Field Data Forms Attachment C WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 3/23/09 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-1 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landform (hillslope, terrace, etc) Floodplain Slope (%) 0-1 Local relief (concave, convex, none) Concave Subregion (LRR) A Let f -? 4 Long _ / N / c/PI/ Datum Soil Map Unit Name; No, Norma NWI classification: None Are climatic/hydrologic conditions on the site typical for this time of year? X Yes ❑ No (If no, explain in remarks.) Are "Normal Circumstances' present on the site? X Yes ❑ No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) ,wmmmm r yr rim nml7o - A.un srie ma2 snowm sam m mt locations, transectS, imp2rtant features, etc. Hydrophytic Vegetation Present? FW. Yes F No Is this Sampling Point within a Wetland? FlY Yes 0❑ No Hydric Soils Present? Yes ❑ No Wetland Hydrology Present? Yes ❑ No Remarks:74s �u hq /t S fi�,'`Yr` ,lid Ila LL � ` %fZG /Q �I!/17 �/:,L!-/,...0?il�elG•r/,a^c.-��dlGrC't �Gi/"/�"J /r1,71-11a. � -/%!r So;% / lGlit.a 1`!/ S c�G'2,� t za- h V r.FTATrnur _ r ran Q..:e...:A....�.....�, s ..r....a.. Tree Stratum (Plot size 20 ft R 1 Absolute % Dominant Indicator Cover Species? Status Dominance Test Worksheet t. te,�'-'A- ;' Number of Dominant Species that are OBL, FACW, or FAC: y (A) 2. 3. Total Number of Dominant Species Across All Strata: 4. Sapling/Shrub Stratum (Plot size 10 ItR� = Total Cover Percent of Dominant Species G that are OBL, FACW, or FAC: �� (AJB) '11 E C/')1 1= O d Prevalence Index Worksheet Total % over of Multiply by OBL species x 1 2 3. N4. FACW species x 2 = b. f i !.? L•v FAC species x 3 = Herb tratum (Plot size 5 it R ) s = Total Cover FACU species x 4 = UPL species x 5 = Column totals (A) B 1. Prevalence Index = B / A = 2. 3. 4. Hydrophytic Vegetation Indicators 5. Dominance test is > 50% 6. Prevalence test is s 3.0 7. Morphological Adaptations ' (provide supporting data in remarks or on a separate sheet) e. 9. Wetland Non -Vascular Plants' 10. Problematic Hydrophytic Vegetation ' (explain) 11. • Indicators of hydric soil and wetland hydrology must be sent, unless disturbed or problematic Woody Vine Stratum (Plot size = Total Cover Hydrophytic Vegetation Yes No Present? ❑ 1. 2. =Total Cover % Bare Ground in Herb Stratum Remarks: /P�� I.0 r'64e1 �U fL"C vF f! fle't!, (7t (.gin ?f oiFi P C'.. 'L, C US Army Corps of Engineers Westem Mountains, Valleys, and Coast - Interim Version SOIL Rmmnlinn DniM no i Profile Descrl on: jDescrlbe to the dep0th needed to document the Indicator or confirm the absence of Indicators. Depth Matrix Redox Features inches Texture Remarks Color moist % Color moist % T Loc - /0 YP 3 /r z-_ o .� l c 0-0 a T 4 - I 1 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains ZLoc: PL=Pore Lining, M=Matrix ric Soil Indicators: (Applicable to all LRRs nless otherwise noted.) Indicators for Problematic Hydric Soils' ❑ Histosol (Al) ❑ Histic Sandy Redox (S5) ❑ 2cm Muck (A10) Epipedon (A2) ❑ Black ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) Histic (A3) ❑ Hydrogen ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (explain in remarks) Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ ❑ Depleted Below Dark Surface (At 1) ❑ Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Sandy Mucky Mineral (Si) ❑ Redox Dark Surface (F6) ❑ Depleted Dark Surface (F7) 3Indicators of hydrophytic vegetation and wetland hydrology must ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) be present, unless disturbed or problematic Restrictive Laver (if Dresent): Type. Yes No ❑ Hydric soil present? Depth (inches): Remarks: I d'I le,�oG � b!-fGl!i-CCL�C /S Cl r / /� / I) 76c-� , C� OX EC( %.r,1C.� q /E; /v ez Z 43:), Sc��chr�rri�� Q�c �xir��.� .f��urli-l'f��"� � ►may: HYDROLOGY Wetland Hydrology Indicators: Primary ❑ ❑ ❑ ❑ ❑ ❑ ElIron ❑ ❑ Indicators (minimum of one required: Surface water (A 1) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (133) Algal Mat or Crust (114) Deposits (B5) Surface Soil Cracks (B6) Inundation Visible on Aerial Imagery (137) check ❑ ❑ ❑ ❑ ❑ all that apply): Secondary Indicators (2 or more required): Sparsely Vegetated Concave Surface (138) ❑ Water -Stained Leaves (B9) (MLRA 1, 2, 4A 8 4B) Water -Stained ,Leaves (except MLRA 1, 2, 4A 8 48) (69) ❑ Drainage Patterns (B10) Salt Crust (B11) ❑ Dry -Season Water Table (C2) Aquatic Invertebrates (B13) ❑ Saturation Visible on Aerial Imagery (C9) Hydrogen Sulfide Odor (Cl) Geomorphic Position (D2) Oxidized Rhizospheres along Living Roots (C3) ❑ Shallow Aquitard (D3) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Recent Iron Reduction in Tilled Soils (C6) ❑ Raised Ant Mounds (D6) (LRR A) Stunted or Stressed Plants (131) (LRR A) ❑ Frost -Heave Hummocks Other (explain in remarks) ❑ ❑ ❑ ❑ Field Observatlon$ Surface Water Present? ❑ Yes Water Table Present? Yes Saturation Present? ❑ Yes (includes capillary fringe) No Depth (in): r No Depth (in): % 2_C) No Depth (in): 7 Z Wetland Hydrology Preserlt9 I Yes No ❑ Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: CM ; Remarks: l.(%L/ u-f�/iI'% V�/y eGC/ D X. f / a OS��•u:2;cam J �lil ��/J ,•/� / hG�-f_.C�. � ' US Army Corps of Engineers Western Mountains, Valleys, and Coast - Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 4/8/69 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-2 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landform (hillslope, terrace, etc) rat .� , GY} Co C Slope (%) Local relief (concave, convex, none) LD/ 1 I✓a R, Subregion (LRR) A Lat 47.5338 Long—122.19487 Datum Soil Map Unit Name No, Norma NWI classification: None Are dimaticJhydrologic conditions on the site typical for this time of year? L_X_J Yes ❑ 1 No (If no, explain in remarks.) Are 'Normal Circumstances' present on the site? IX Yes ❑ No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) bUMMAtKT UI- I-INUINU5 — Attach site map showing sampling int locations, transects, im rtant features, etc. Hydrophytic Vegetation Present? Yes F-M-1 No Is this Sampling Point within a Wetland? F El 1 Yes No Hydric Soils Present? ❑ Yes No Wetland Hydrology Present? ❑ Yes No Remarks: V t:Ut I A 1 IUN - use scientific names of plants. Tree Stratum (Plot size 20 ft R 1 Absolute % Dominant Indicator Dominance Test Worksheet Cover S 'es? Status 1 6f Number of Dominant Species that are OBL, FACW, or FAC: (A) 2. 3. Total Number of Dominant Species Across All Strata: 4. (B) = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC: (A/B) Sapling/Shrub Stratum (Plot size 10 ft R__J Prevalence Index Worksheet Total % Cover of Multiply by 2. 3. OBL species x 1 = 4 FACW species x 2 = 5. FAC species x 3 = = Total Cover FACU species x 4 = UPL species x 5 = Herb Stratum (Plot size 5 ft R ) Column totals (Al B 1- S N . •t� Prevalence Index = B / A = 2' 3. 4. Hydrophytic Vegetation Indicators 5. Dominance test is > 50% 6. Prevalence test is s 3.0 7. Morphological Adaptations • (provide supporting data in remarks or on a separate sheet) 8. 9. Wetland Non -Vascular Plants ' 10. Problematic Hydrophytic Vegetation ` (explain) 11. ' Indicators of hydric soil and wetland hydrology must be = Total Cover Woody Vine Stratum (Plot size resent unless disturbed or problematic Hydrophytic Vegetation ❑ Present? Yes No 1. 2. Total Cover % Bare Ground in Herb Stratum Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast — Interim Version SOIL Q— ii— 10 . _a .moo , Profile Descri tion: Describe to the depth needed to document the Indicator or confirm the absence of indicators. Depth Matrix Redox Features inches Texture Remarks Color moist % Color moist % T Loc o Ire 117__3 J 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrx dric Soil Indicators: (Applicable to all LRRs unless otherwise noted.) O Histosol (Al) ❑ Sandy Redox (S5) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) Thick Dark Surface (Al2) [:1Redox Dark Surface (F6) eyed Depleted Below Dark Surface (Al1) ❑ Depleted Matrix (F3) dC011111 Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) Sandy GlMatrix (S4) ❑ Redox Depressions (FB) Indicators for Problematic Hydric Soils' ❑ 2cm Muck (A10) ❑ Red Parent Material (TF2) ❑ Other (explain in remarks) ❑ 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Laver (if oresent): Type' Depth (inches): Yes ❑ No Hydric soil present? _/ Remarks:l/�A(Ci HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required: ❑ Surface check all that apply): Secondary Indicators (2 or more required): water (Al) ❑ High Water Table (A2) ❑ ❑ Sparsely Vegetated Concave Surface (68) ❑ Water -Stained Leaves (139) (AIILRA 1, 2, 4A & 4B) Water -Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) ❑ Drainage Patterns (B10) ❑ Saturation (A3) ❑ Water Marks (B1) ❑ ❑ Salt Crust (B11) ❑ Dry -Season Water Table (C2) Aquatic Invertebrates (B13) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Sediment Deposits (B2) ❑ Drift Deposits (133) ❑ ❑ Hydrogen Sulfide Odor (Cl) ❑ Geomorphic Position (D2) Oxidized Rhizospheres along Living Roots (C3) ❑ Shallow Aquitard (D3) ❑ Algal Mat or Crust (B4) Cl Iron ❑ Presence of Reduced Iron (C4) ❑ FAC-Neutral Test (D5) Deposits (B5) ❑ Surface Soil Cracks (B6) ❑ ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Raised Ant Mounds (D6) (LRR A) Stunted or Stressed Plants (Dt) (LRR A) ❑ Frost -Heave Hummocks ❑ Inundation Visible on Aerial ❑ Other (explain in remarks) Imagery (B7) Field Observations Surface Water Present? ❑ Yes Water Table Present? ❑ Yes No Depth (in): No Depth (in):,7 zO Wetland Hydrology Present? Yes ❑ No 1; Saturation Present? ❑ Yes No Depth (in): 7 uj (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks. - US Army Corps of Engineers Western Mountains. Valleys, and Coast —Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 4/8/09 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-3 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landform (hilislope, terrace, etc) ; CSlope (°h) �� Local relief (concave, convex, none ) ICI a Subregion (LRR) A Lat 47.5338 Long-122.19487 Datum Soil Map Unit Name No, Norma NWI classification: None Are climatic/hydrologic conditions on the site typical for this time of year? X 11 Yes L ❑ No (If no, explain in remarks.) Are 'Normal Circumstances' present on the site? X I Yes I ❑ I No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) a V inTNR 1 yr rinui nua - Auaun Site etc. Hydrophytic Vegetation Present? �❑ Yes No Is this Sampling Point within a Wetland? Yes F❑ No Yes Hydric Soils Present? ❑V No Wetland Hydrology Present? ❑ Yes LK No Remarks: VEGETATION - Use scientific names of Dlants. Tree Stratum (Plot size 20 ft R 1 Absolute % Dominant Indicator Dominance Test Worksheet Cover Species? Status �..� 1 CGLG:T )' r Number of Dominant Species that are OBL, FACW, or FAC: / (A) 2. 3. Total Number of Dominant Species Across All Strata: 4. (B) = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC: S� �� WB) Sapling/Shrub Stratum (Plot size 10 ft R___) Prevalence Index Worksheet Total % Cover of Multiplyb 2. 3. OBL species x 1 = 4. FACW species x 2 = 5. FAC species x 3 = - = Total Cover FACU species x 4 = UPL species x 5 = Herb Stratum (Plot size 5 ft R ) Column totals (A) B 1. Prevalence Index = B / A = 2. 3. 4. Hydrophytic Vegetation Indicators 5. Dominance test is > 50% 6. Prevalence test is s 3.0' 7. Morphological Adaptations . (provide supporting data in remarks or on a separate sheet) 8. g, Wetland Non -Vascular Plants' 10. Problematic Hydrophytic Vegetation ' (explain) 11. ' Indicators of hydric soil and wetland hydrology must be = Total Cover resent unless disturbed or problematic Woody Vine Stratum (Plot size Vegetation Yes ❑ No HydropPresent? Pnaserit7 1. 2. = Total Cover % Bare Ground inHerbStratum f Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast - Interim Version SOIL Camnlinn Pnini, no_1 Profile Descr ption: Describe to the depth needed to document the Indicator or confirm the absence of Indicators. Depth Matrix Redox Features inches Texture Remarks Color moist % Color moist % T Loe „ 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 'Loc. PL=Pore Lining, M=Matrix ric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Sods' ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (explain in remarks) ❑ Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) ElDepleted Below Dark Surface (Al 1) Depleted Matrix (F3) Thick Dark Surface (Al2) Sandy d'E] Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and wetland hydrology must Mucky Mineral (S1) Sandy Gleyed Depleted Dark Surface (F7) be present, unless disturbed or problematic Matrix (S4) Redox Depressions (F8) Restrictive Laver (if Dresent): Type' Yes ❑ No Hydric soil present? Depth (inches): Remarks: Ll-J�ijr 70 eJ HYDROLOGY Wetland Hydrology Indicators: Primary ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ Indicators (minimum of one required: Surface water (A I) High Water Table (A2) Saturation (A3) Water Marks (B1) Sediment Deposits (B2) Drift Deposits (B3) Algal Mat or Crust (64) Iron Deposits (85) Surface Soil Cracks (136) Inundation Visible on Aerial Imagery (87) check ❑ ❑ ❑ ❑ ❑ all that apply): Secondary Indicators (2 or more required): Sparsely Vegetated Concave Surface (88) ❑ Water -Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) Water -Stained Leaves (except MLRA 1, 2, 4A & 4B) (69) ❑ Drainage Patterns (B10) Salt Crust (B11) ❑ Dry -Season Water Table (C2) Aquatic Invertebrates (B13) ❑ Saturation Visible on Aerial Imagery (C9) Hydrogen Sulfide Odor (C1) ❑ Geomorphic Position (D2) Oxidized Rhizospheres along Living Roots (C3) ❑ Shallow Aquitard (D3) Presence of Reduced Iron (C4) ❑ FAC-Neutral Test (D5) Recent Iron Reduction in Tilled Soils (C6) ❑ Raised Ant Mounds (06) (LRR A) Stunted or Stressed Plants (DI) (LRR A) ❑ Frost -Heave Hummocks Other (explain in remarks) ❑ ❑ ❑ ❑ Field Observations Surface Water Present? ❑ Yes Water Table Present? ❑ Yes Saturation Present? ❑ Yes (includes capillary fringe) No Depth (in): _^ 0 I No Depth (in):>tg/ No Depth (in): / Z/ Welland Hydrology Present? Yes ❑ No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Western Mountains. Valleys, and Coast — Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 4/8/09 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-4 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landform (hillslope, terrace, etc) f �A i LL+-2�j� ^� Slope (%) Z Local relief (concave, convex, none) /i0/7 c, Subregion (LRR) A Let 47.5338 Long-122.19487 1 Datum Soil Map Unit Name No, Norma NWI classification: None Are dimatic/hydrologic conditions on the site typical for this time of year? X Yes ❑ No (If no, explain in remarks.) Are 'Normal Circumstances" present on the she? X Yes ❑ No Are Vegetation ❑, Soil, [I, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS - Attach site map showing sampling int locations, transects, Imp2rtant features, etc. Hydrophydc Vegetation Present? Yes No Is this Sampling Point within a Wetland? F—O-] Yes No Hydric Soils Present? ❑ Yes No Wetland Hydrology Present? ❑ Yes LW No Remarks: VEGETATION - Use scientific names of plants. Tree Stratum (Plot size 20 ft R ) Absolute % Dominant Cover Species? Indicator Status Dominance Test Worksheet 1 1 G� d.:am r Y. I }R eilr Number of Dominant Species are OBL, FACW, or FAC: 3 (A) 2 yt f eU_ B Ile-lbilthat 3. Total Number of Dominant Species Across All Strata: 33 A 4. Sapling/Shrub Stratum (Plot size 10 ft R,� = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC: (A/B) 1 Prevalence Index Worksheet T 110 over of Multiply b OBL species x 1 = 2 3. 4. FACW spades x 2 = 5. FAC species x 3 = Herb Stratum (Plot size 5-ft RR ) = Total Cover FACU species x 4 = UPL species x 5 = Column totals (A) B Prevalence Index = B / A = 2. 3. 4• Hydrophytic Vegetation Indicators 5. Dominance test is > 50% 6- Prevalence testis s 3.0 • 7. Morphological Adaptations • (provide supporting data in remarks or on a separate sheet) t3 g. Wetland Non -Vascular Plants • 10. Problematic Hydrophytic Vegetation • (explain) 11. • Indicators of hydric soil and wetland hydrology must be resent unless disturbed or problematic Woody Vine Stratum (Plot size = Total Cover / Hydrophytic Vegetation Yam( No Present? /` '` ❑ 1. 2. = Total Cover % Bare Ground in Herb Stratum Remarks: UL� -7 t!-))C�GCCf/L!'�ci1?%//%G79)Cr-CJ W IJ /s •�%'i��, US Army Corps of Engineers Western Mountains, Valleys, and Coast - Interim Version SOIL Q.—H.- Dni.N no . Profile Descri on: Describe to the depth needed to document the Indicator or confirm the absence of Indicators. Dept Matrix Redox Features inches Texture Remarks Color moist % Color moist % T LOC2 92, try L� - 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix dric Soil Indicators: (Applicable to all LRRs unless otherwise noted.) ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ Histic Epipedon (Are) ❑ Stripped Matrix (S6) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) Loamy Gleyed Matrix (F2)Depleted Below Dark Surface (Al1) Depleted Matrix (F3) ❑ Hydrogen Sulfide (A4) doolo:) Thick Dark Surface (Al2) Redox Dark Surface (F6) ❑ Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) ❑ Sandy Gleyed Matrix (S4) Redox Depressions (F8) Indicators for Problematic Hydric S01183 ❑ 2cm Muck (A10) ❑ Red Parent Material (TF2) ❑ Other (explain in remarks) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Laver (if Dresent): Type: Depth (inches): Yes ❑ Hydric soil present?No Remarks: fj/l'�YIG J�li/ /t9l�l .. � HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required: ❑ Surface water (Al) ❑ High Water Table (A2) Saturation (A3) Water Marks (B1) ❑ Sediment Deposits (B2) ❑ Drift Deposits (B3) ❑ Algal Mat or Crust (94) ❑ Iron Deposits (135) ❑ Surface Soil Cracks (B6) ❑ Inundation Visible on Aerial check ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ all that apply): Sparsely Vegetated Concave Surface (B8) Water -Stained Leaves (except MLRA 1, 2, 4A & 48) (B9) Salt Crust (B11) Aquatic Invertebrates (B13) Hydrogen Sulfide Odor (C1) Oxidized Rhizospheres along Living Roots (C3) Presence of Reduced Iron (C4) Recent Iron Reduction in Tilled Soils (C6) Stunted or Stressed Plants (D1) (LRR A) Other (explain in remarks) Secondary Indicators (2 or more required): ❑ Water -Stained Leaves (139) (MLRA 1, 2, 4A & 4B) ❑ Drainage Patterns (B10) ❑ Dry -Season Water Table (C2) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Geomorphic Position (D2) ❑ Shallow Aquitard (D3) ❑ FAC-Neutral Test (D5) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Frost -Heave Hummocks Imagery (B7) Field Observations Surface Water Present? ❑ Water Table Present? ❑ Saturation Present? ❑ (includes capillary fringe) Yes Yes Yes No Depth (in): No Depth (in): No Depth (in): Wetland Hydrology Present? Yes ❑ No Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: ' Remarks: US Army Corps of Engineers Western Mountains, Valleys. and Coast — Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 4/8/09 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-5 Investigator: PatlOscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landfonn (hillslope, terrace, etc) Slope (%) Local relief (concave, convex, none) Subregion (LRR) A Lat 47.5338 Long-122.19487 1Datum Soil Map Unit Name No, Norma INWI classification: None Are dimabcJhydrologic conditions on the site typical for this time of year? X 11 Yes 1 ❑ 1 No (If no, explain in remarks.) Are 'Normal Circumstances' present on the site? X I Yes ❑ No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) 5UMMARY OF FINDINGS — Attach site ma showing sampling int locations, transacts, Imp2rtant features, etc. ��.,/ Hydrophytic Vegetation Present? Yes No Is this Sampling Point within a Wetland? 0 I �f Yes No Hydric Soils Present? ❑ Yes No `—\ Wetland Hydrology Present? ❑ Yes No Remarks: VEGETATION - Use scientific names of niants. Tree Stratum (Plot size 20 ft R ) i Absolute % Dominant Cover Species? Indicator Status Dominance Test Worksheet 1. -%lCC < /!c. -L?t. tZ Ct �t 5 Number of Dominant Species that are OBL, FACW, or FAC: (A) 2. 3. Total Number of Dominant Species Across All Strata: (B) 4. Sapling/Shrub Stratum (Plot size 10 ft R_) = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC: ''' (A/B) 1. Prevalence Index Worksheet Total °/ Cover of Multioly OBL species x 1 = 2. 3_ 4. FACW species x 2 = 6_ FAC species x 3 = Herb Stratum (Plot size 5 ft R ) &7-D = Total Cover FACU species x 4 = UPL species x 5 = Column totals (A) B 1. Prevalence Index = B / A = 2. 3. 4. Hydrq hytic Vegetation Indicators 5• Dominance test is > 50% 8. Prevalence test is s 3.0 7 Morphological rp ogipl Adaptations • (provide supporting data in remarks or on a separate sheet) 8. 9. Welland Non -Vascular Plants • 10. Problematic Hydrophytic Vegetation • (explain) 11. • Indicators of hydric soil and wetland hydrology must be resent, unless disturbed or problematic W Vine Stratum Plot size = Total Cover Hydrophytic Vegetation Yes ❑ No Present? 1. 2. = Total Cover % Bare Ground in Stratum fHerb Remarks: //�Gf'fGw�Jli`;,L�Ti US Army Corps of Engineers Western Mountains, Valleys, and Coast - Interim Version SOIL Ramnlinn Pnint DP-i Profile Descrl on: Describe to the depth needed to document the Indicator or confirm the absence of Indicators. Depth Matrix Redox Features inches Texture Remarks Color(moist) % Color moist % T Loc /"Y& z �.. i 7— 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix dric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (explain in remarks) ❑ Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2)Depleted Below Dark Surface (All1) Depleted Matrix (F3) Thick Dark Surface (Al2) Redox Dark Surface (F6) dE00031 3Indicators of hydrophytic vegetation and wetland hydrology must Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) be present, unless disturbed or problematic Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Laver (if Dresent): Type Hydric soil present? Yes ❑ No Depth (inches): Remarks: �iUt %'/�. J`Di�/i%C7/GL2 Tl•'1 C1/�' 17�s 1 /� HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required: ❑ Surface water (Al) ❑ High Water Table (A2) ❑ Saturation (A3) ❑ Water Marks (131) ❑ Sediment Deposits (132) ❑ Drift Deposits (83) ❑ Algal Mat or Crust (84) ❑ Iron Deposits (65) ❑ Surface Soil Cracks (B6) ❑ Inundation Visible on Aerial Imagery (67) check ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ all that apply): Sparsely Vegetated Concave Surface (138) Water -Stained Leaves (except MLRA 1, 2, 4A & 4B) (89) Salt Crust (B11) Aquatic Invertebrates (613) Hydrogen Sulfide Odor (Cl) Oxidized Rhizospheres along Living Roots (C3) Presence of Reduced Iron (C4) Recent Iron Reduction in Tilled Soils (C6) Stunted or Stressed Plants (D1) (LRR A) Other (explain in remarks) Secondary Indicators (2 or more required): ❑ Water -Stained Leaves (89) (MLRA 1, 2, 4A & 4B) ❑ Drainage Pattems (810) Dry -Season Water Table (C2) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Geomorphic Position (D2) ❑ Shallow Aquitard (133) ❑ FAC-Neutral Test (D5) ❑ Raised Ant Mounds (D6) (LRR A) ❑ Frost -Heave Hummocks Field Observations Surface Water Present? ❑ Yes Water Table Present? ❑ Yes Saturation Present? ❑ Yes (includes capillary fringe) No Depth (in): No Depth (in): ' / No Depth (in): cb Wetland Hydrology Present? Yes ❑ No Describe Record Data (stream gauge: monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast — lntenm Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 4/8/09 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-6 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landform (hillslope, terrace, etc) _ - ,; , Slope (%) ,� :. ,.... Local relief (concave, convex, none) is t• Subregion (LRR) A Lat 47.5338 Long-122.19487 Datum Soil Map Unit Name No, Norma NWI classification: None Are climatic/hydrologic conditions on the site typical for this time of year? X Yes ❑ No (tf no, explain in remarks.) Are *Normal Circumstances' present on the site? X Yes ❑ No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) suMMAKY rJF FINDINGS - Attach site map showing sampling point locations, transacts, important features. etc. IHydrophytic Vegetation Present? Yes I No Is this Sampling Point within a Wetland? hg I Yes � No q Hydric Soils Present? Yes ❑ No C" V Wetland Hydrology Present? Yes ❑ No Remarks: VEGETATION - Use scientific names of plants. Tree Stratum (Plot size 20 ft R 1 Absolute % Dominant Indicator Cover Species? Status Dominance Test Worksheet tw)) o- , 0 Number of Dominant Species that are OBL, FACW, or FAC: (A) z. 3. Total Number of Dominant Species Across All Strata: 3 (B) 4. = Total Cover Sapling/Shrub Stratum (Plot size 10 ft R__) Percent of Dominant Species that are OBL, FACW, or FAC: ?%� _ (PJ6) 1. bzd-,- '�. ��Gi %. f Prevalence Index Worksheet Total % Cover of Multiply OBL species x 1 = 2. li 5 3. 4. FACW species x 2 = 5. FAC species x 3 = Herb Stratum (Plot size 5 ft R = Total Cover ) FACU species x 4 = UPL species x 5 = Column totals (A) B 1. Prevalence Index = B / A = 2. 3. 4. Hydrophytic Vegetation Indicators 5. Dominance test is > 50% 6. Prevalence test is s 3.0 ' ? Morphological hol ical Adaptations rp p (provide supporting data in remarks or on a separate sheet) 8, 9. Wetland Non -Vascular Plants' 10. Problematic Hydrophytic Vegetation ' (explain) it. • Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum Plot size = Total Cover Hydrophytic Vegetation Present? Yes No ❑ 1. 2. = Total Cover % Bare Ground in Herb Stratum a 1 Remarks: �i��P r ?,/I, , •a (/FCC G9 JlL[.Cd. (,1 j)UjZ j1,nLL. US Army Corps of Engineers Western Mountains. Valleys. and Coast - Interim Version SOIL Cmmnlinn Pnint f1P_A Profile Descrl lion: Describe to the depth needed to document the Indicator or confirm the absence of Indicators. Depth inches Matrix Redox Features Texture Remarks Color moist % Color moist % T Loc `G7, 5"F > IGi 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains ZLoc: PL=Pore Lining, M=Matrix dric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soil63 ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2cm Muck (A10) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) ❑ Red Parent Material (fF2) 01 Black Histic (A3) ❑ Loamy Mucky Mineral (F1) (except MLRA 1) ❑ Other (explain in remarks) ❑ Hydrogen Sulfide (A4) ❑ Loamy Gleyed Matrix (F2) ❑ ❑ Depleted Below Dark Surface (Al 1) Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and wetland hydrology must ❑ Sandy Mucky Mineral (S1) ❑ Depleted Dark Surface (F7) be present, unless disturbed or problematic ❑ Sandy Gleyed Matrix (S4) ❑ Redox Depressions (F8) Restrictive Laver (if Dresent): Type Depth (inches): Yes No ❑ Hydric soil present? Remarks: I HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required: urface water (A1) igh Water Table (A2) aturation (A3) ater Marks (81) ediment Deposits (62) rift Deposits (B3) tC]Algal Mat or Crust (B4) on Deposits (65) urface Soil Cracks (B6) undation Visible on Aerial agery (137) check ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ ❑ all that apply): Secondary Indicators (2 or more required): Sparsely Vegetated Concave Surface (138) ❑ Water -Stained Leaves (B9) (MLRA 1, 2,4A & 4B) Water -Stained Leaves (except MLRA 1, 2, 4A & 48) (89) ❑Drainage Patterns (B10) Salt Crust (B11) ❑ Dry -Season Water Table (C2) Aquatic Invertebrates (B13) ❑ Saturation Visible on Aerial Imagery (C9) Hydrogen Sulfide Odor (C1) ❑ Geomorphic Position (D2) Oxidized Rhizospheres along Living Roots (C3) ❑ Shallow Aquitard (D3) Presence of Reduced Iron (C4) ❑ FAC-Neutral Test (D5) Recent Iron Reduction in Tilled Solis (C6) ❑ Raised Ant Mounds (D6) (LRR A) Stunted or Stressed Plants (D1) (LRR A) ❑ Frost -Heave Hummocks Other (explain in remarks) Field Observations Surface Water Present? ❑ Yes Water Table Present? Yes Saturation Present? � Yes (includes capillary fringe) No Depth (in): No Depth (in): rf / No Depth (in): �, L„� Wetland Hydrology Present? Yes No ❑ ❑ ❑ Described Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: / / / l�t/Q��lvir G1la� A� IL-15 lGrf9 c:r-:_- e- %d4 1O ci US Army Corps of Engineers Western Mountains, Valleys, and Coast — Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: 4/ly/09 Applicant/Owner: Hawks Landing, LLC Sampling Point: DP-7 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WA Landfomt (hillslope, terrace, etc) Slope (%) Local relief (concave, convex, none) Subregion (LRR) A Lat 47.5338 Long—122.19487 1Datum Soil Map Unit Name No, Norma NWI classification: None Are climatiethydrologic conditions on the site typical for this time of year? X Yes ❑ J No (if no, explain in remarks.) Are "Normal Circumstances" present on the site? X Yes L ❑ J No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling int locations, transects, im rtant features, etc. Hydrophytic Vegetation Present? Yes ❑ No Is this Sampling Point within a Wetland? 0 Yes �No Hydric Soils Present? ❑ Yes � No Wetland Hydrology Present? /❑ Yes No Remarks:,.. ��rr r lLCeC�ltC� VEGETATION — Use scientific names of Dlants. Tree Stratum (Plot size 20 ft R 1 Absolute % Cover Dominant Indicator Species? Status Dominance Test Worksheet 1 L %.�, �,/r. • _� . Number of Dominant Species that are OBL, FACW, or FAC: (A) 2. • 3. Total Number of Dominant Species Across All Strata: (B) 4. Sapling/Shrub Stratum (Plot size 10 ft R___) = Total Cover Percent of Dominant Species / that are OBL, FACW, or FAC: �4r (A/B) 1 tLL. Gr Prevalence Index Worksheet Total % Cover of Multiply by OBLspecies x1= 2. 3. P S ttr('.r L L 4. FACW species x 2 = 5. FAC s pecles x 3 = Herb ttratum (Plot size 5 ft R ) = Total Cover FACU species x 4 = UPL species x 5 = Column totals (A) B 1. < Prevalence Index = B / A = 2. 4. Hydro hytic Vegetation Indicators 5. XQ lU)? >` + L G Dominance test is > 50% 8. ! Prevalence test is s 3.0 ` 7 MorphologicalAda tations' p (provide supporting data in remarks or on a separate sheet) 8. 9. Wetland Non -Vascular Plants' 10. Problematic Hydrophytic Vegetation • (explain) 11. ' Indicators of hydric soil and wetland hydrology must be resent, unless disturbed or problematic Woody Vine Stratum Plot size = Total Cover Hydrophytic Vegetation Yes No Present? ❑ 1. 2. = Total Cover % Bare Ground in Herb Stratum / 42)) % t -L Remarks: f ,��0 1 µ tea/ C� ek.`t`c, ^ f�-� 7 US Army Corps of Engineers Westem Mountains. Valleys, and Coast — Interim Version SOIL SamDlina Point DP-7 Profile Description: Describe to the depth needed to document the Indicator or confirm the absence of Indicators. Depth Matrix Redox Features inches Texture Remarks Color moist % Color moist % T Loc 0 1-5 c+ . 1, b .! t. „ , u/ IU" 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix dric Soil Indicators: (Applicable to all LRRs unless otherwise noted.) ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ Histic Epipedon (A2) ❑ Stripped Matrix (S6) Indicators for Problematic Hydric Soils' ❑ 2cm Muck (A10) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) Hydrogen Sulfide (A4) El Mucky Mineral (F1) (except MLRA 1) ❑Loamy Gleyed Matrix (F2) ❑ Other (explain in remarks) ❑Depleted Below Dark Surface (At 1) ❑ Depleted Matrix (F3) Thick Dark Surface (Al2) Sandy Mucky Mineral (S1) dOE001 Sandy Gleyed Matrix (S4) ❑ Redox Dark Surface (F6) ❑ Depleted Dark Surface (F7) ❑ Redox Depressions (F8) 3Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Restrictive Laver (if Dresent): Type: ypDepth Hydric soil present? Yes ❑ No (inches): Remarks: yud !v L %C" /I 7 HYDROLOGY Wettand Hydrology Indicators: Primary Indicators (minimum of one required: check all that apply): Secondary Indicators (2 or more required): ❑ Surface water (A1) ❑ Sparsely Vegetated Concave Surface (BB) ❑ Water -Stained Leaves (89) (MLRA 1, 2, 4A & 4B) ❑ High Water Table (A2) ❑ Water -Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) ❑ Drainage Patterns (1310) ❑ Saturation (A3) ❑ Salt Crust (B11) ❑ Dry -Season Water Table (C2) ❑ Water Marks (131) ❑ Aquatic Invertebrates (B13) ❑ Saturation Visible on Aerial Imagery (C9) ❑ Sediment Deposits (B2) ❑ Hydrogen Sulfide Odor (Cl) ❑ Geomorphic Position (D2) Drift Deposits (63) ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Shallow Aquitard (D3) Algal Mat or Crust (114) ❑ Presence of Reduced Iron (C4) ❑ FAC-Neutral Test (D5) ❑ Iron Deposits (B5) ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Raised Ant Mounds (136) (LRR A) ❑ Surface Soil Cracks (B6) ❑ Stunted or Stressed Plants (DI) (LRR A) ❑ Frost -Heave Hummocks ❑ Inundation Visible on Aerial ❑ Other (explain in remarks) Imagery (B7) Field Observations Surface Water Present? ❑ Yes Water Table Present? ❑ Yes PKNo No Depth (in): Depth (in): Wetland Hydrology Present? Yes ❑ No M Saturation Present? ❑ Yes y No Depth (in): fro - > (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: US Army Corps of Engineers Western Mountains, Valleys, and Coast — Interim Version WETLAND DETERMINATION DATA FORM Western Mountains, Valleys, and Coast Supplement to the 1987 COE Wetlands Delineation Manual Project Site: Hawks Landing, Crowne Plaza Hotel Sampling Date: /-/y�-G9 ApplicanUOwner: Hawks Landing, LLC _ Sampling Point: UP-8 Investigator: Pat/Oscar/Jerom City/County: Renton/Kin Section, Township, Range: S29 T24N R5E State: WAc) Landform (hillslope, terrace, ete , P G n Slope (%) _ ly Local relief (concave, convex, none) Subregion (LRR) A Lat 47.5338 Long—122.19487 Datum Soil Map Unit Name No, Norma I NWI classification: None Are climatic/hydrologic conditions on the site typical for this time of year? i X Yes ❑ No (If no, explain in remarks.) Are'Normal Circumstances' present on the site? X Yes ❑ No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ significantly disturbed? No Are Vegetation ❑, Soil, ❑, or Hydrology ❑ naturally problematic? No (If needed, explain any answers in Remarks.) .�aimmnr� yr r/murm 20 - AtIdUnsitemalp snowi2j sarneung p2int locations, transects, imp2rtant features, etc. Hydrophytic Vegetation Present? Yes No Is this Sampling Point within a Wetland? F-0-1 Yes F-ElAo Hydric Soils Present? ❑ Yes N21 No Wetland Hydrology Present? ❑ Yes rXNo Remarks: VEGETATION — Use srientifir nnmac of nlnnfc Tree Stratum (Plot size 20 ft R 1 Absolute % Dominant Indicator Dominance Test Worksheet Cover Species? Status 1. Ff=)� Number of Dominant Species that are OBL, FACW, or FAC: (A) 2. 3. Total Number of Dominant ^ Species Across All Strata: 4.J1 (B) = Total Cover Percent of Dominant Species �. p T that are OBL, FACW, or FAC: �l (A/B) Sapling/Shrub Stratum (Plot size 10 ft R__) Prevalence Index Worksheet Total % Cover of Multiply by species x 1= 2. ' t" T. 3.1 r n LC iLAOBL 4. r �. /r i FACW species x 2 = 5. FAC species x 3 = D = Total Cover FACU species x 4 = UPL species x 5 = Herb Stratum (Plot size 5 ft R ) Column totals (A) B 1. Prevalence Index = B / A = 2. 3. 4. Hydrophytic Vegetation indicators 5. Dominance test is > 50% 6. Prevalence test is s 3.0 ' 7. Morphological Adaptations' (provide supporting data in remarks or on a separate sheet) 8. 9. Wetland Non -Vascular Plants' 10. Problematic Hydrophytic Vegetation ' (explain) 11. • Indicators of hydric soil and wetland hydrology must be = Total Cover resent, unless disturbed or problematic Woody Vine Stratum (Plot size Hydrophytic Vegetation Yes �f No ❑ Present?sent? 1. 2. = Total Cover \ % Bare Ground in Herb Stratum Remarks: r US Army Corps of Engineers Western Mountains. Valleys. and Coast — Interim Version SOIL •r• •a Profile Descri ion: Describe to the epth needed to document the Indicator or confirm the absence of Indicators. Depth Matrix Redox Features inches Remarks Color moist % Color moist % Type LOCITexture y-I'IT PL O,- c 'Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix dric Soil Indicators: (Applicable to all LRRs unless otherwise noted.) Indicators for Problematic Hydric S01183 ❑ Histosol (Al) ❑ Sandy Redox (S5) ❑ 2cm Muck (A10) ❑ Histic Epipedon (A2) Stripped Matrix (S6) ❑ Red Parent Material (TF2) ❑ Black Histic (A3) ❑ Loamy Mucky Mineral (Ft) (except MLRA 1) ❑ Other (explain in remarks) ❑ Hydrogen Sulfide (A4) Loamy Gleyed Matrix (F2) ❑ ❑ Depleted Below Dark Surface (Al 1) Depleted Matrix (F3) ❑ Thick Dark Surface (Al2) ❑ Sandy Mucky dE01031 Redox Dark Surface (F6) 3Indicators of hydrophytic vegetation and wetland hydrology must Mineral (S1) ❑ Sandy Depleted Dark Surface (F7) be present, unless disturbed or problematic Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Laver (if present): Type: Hydric soil present? Yes ❑ No Depth (inches): Remarks: ' av HYDROLOGY Wetland Hydrology Indicators: Primary Indicators (minimum of one required: ❑ Surface check all that apply): Secondary Indicators (2 or more required): water (Al) ❑ High Water Table (A2) ❑ ❑ Sparsely Vegetated Concave Surface (B8) ❑ Water -Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) Water -Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) ❑ Drainage Patterns (B10) ❑ Saturation (A3) ❑ Water Marks ❑ Salt Crust (B11) ❑ Dry -Season Water Table (C2) (81) ❑ Sediment Deposits (B2) ❑ ❑ Aquatic Invertebrates (B13) ❑ Saturation Visible on Aerial Imagery (C9) Hydrogen Sulfide Odor (C1) ❑ Geomorphic Position (D2) ❑ Drift Deposits (B3) ❑ Algal Mat or Crust (B4) ❑ ❑ Oxidized Rhizospheres along Living Roots (C3) ❑ Shallow Aquitard (D3) Presence of Reduced Iron (C4) ❑ FAC-Neutral Test (D5) ❑ Iron Deposits (B5) ❑ Surface Soil Cracks (B6) ❑ ❑ Recent Iron Reduction in Tilled Soils (C6) ❑ Raised Ant Mounds (136) (LRR A) Stunted or Stressed Plants (D1) (LRR A) Frost -Heave Hummocks Inundation Visible on Aerial ❑ Other (explain in remarks) Imagery (B7) Field Observations Surface Water Present? ❑ Yes Water Table Present? ❑ Yes No Depth (in): No Depth (in): f� Wetland Hydrology Present? Yes ❑ No Saturation Present? ❑ Yes (includes capillary fringe) No Depth (in): C� Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks:- GUC 1Z c_1 /�'v7Y US Army Corps of Engineers Westem Mountains, Valleys, and Coast - Interim Version