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Home My WebLink AboutSWP272711 (10)May 2006 Jones & Stokes 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Renton Village Storm System Improvement Project Wetland Delineation & Reconnaissance Report Prepared for: Gray & Osborne, Inc. 701 Dexter Avenue North, Suite 200 Seattle, WA 98109 Contact: Barry Baker 206/284-0860 Prepared by: �� A Jones & Stokes 11820 Northup Way, Suite E300 Bellevue, WA 98005 Contact: Robin MacEwan 425/822-1077 May 2006 1 11 This document should be cited as: ' Jones & Stokes. 2006. Renton Village Storm System Improvement Project: Wetland Delineation & Reconnaissance Report. May. (AS 06048.06.) Bellevue, WA. Prepared for Gray & Osborne, Inc, Seattle, WA. Table of Contents 1. Introduction..........................................................................1 2. Study Area............................................................................ 2 2.1. Project Area........................................................................................... 2 2.2. Reconnaissance Area............................................................................ 2 3. Methods................................................................................ 4 ' 4. Results.................................................................................. 9 4.1. Wetlands..............................................................................................10 ' 4.1.1. Vegetation......................................................................................10 4.1.2. Hydrology.......................................................................................13 ' 4.1.3. Soils...............................................................................................13 4.2. Streams ................................................................................................13 ' 5. Permitting Implications.....................................................17 5.1. State and Federal Aquatic Permits.......................................................17 5.2. City of Renton Critical Areas Regulations............................................18 6. References..........................................................................19 1 I Figures ' Figure 1. Project Vicinity Map................................................................................ 3 Figure 2. USGS Topographic Map........................................................................ 5 Figure 3. USDA Surveyed Soils............................................................................ 6 ' Figure 4. National Wetland Inventory Map............................................................ 7 Figure 5. Renton Wetlands Inventory Map............................................................8 ' Figure 6. Project Area and Reconnaissance Area...............................................11 Figure7. Sections...............................................................................................15 1 ' May 2006 Renton Village Storm System Improvement Project Appendices Appendix A. Photographs Appendix B. Wetland Field Data Forms Acronyms and Abbreviations City City of Renton Corps U.S. Army Corps of Engineers DNR Washington Department of Natural Resources Ecology Washington Department of Ecology FAC Facultative HPA Hydraulic Project Approval NWI National Wetland Inventory NWP Nationwide Permit OHWM Ordinary High Water Mark RMC Renton Municipal Code WCM Renton Water Class Map USDA U.S. Department of Agriculture USFWS U.S. Fish and Wildlife Service USGS U.S. Geological Survey WRIA Water Resource Inventory Area 1 1. Introduction At the request of Gray & Osborne, Inc., Jones & Stokes conducted a delineation and reconnaissance of wetlands and waters of the United States within the Renton Village ' Storm System Improvement Project area. The Renton Village Storm System Improvement Project is located in the City of Renton (City) between I-405 and Renton Village, close to the center of Section 19, T23N, RSE. No wetlands and three ' drainages were identified within the Study Area. The Renton Village stormwater drainage system currently conveys Rolling Hills ' Creek and additional stormwater runoff in a piped conveyance system from SR 515 to an open channel between Renton Village and the I-405 corridor. The City of Renton Surface Water Utility plans to replace the existing Renton Village stormwater ' drainage system with a new system capable of carrying the peak design flow. One aspect of this project will be to replace the damaged 48-inch corrugated metal pipe at ' the outlet of the Renton Village storm system. New energy dissipation will be provided at the pipe outlet, as well as a means for turning the flow at the pipe outlet to reduce erosion of the south bank of the creek, opposite the culvert discharge. ' This report documents a wetland delineation conducted within the area surrounding the damaged 48-inch culvert and additional wetland and stream reconnaissance conducted downstream to the 48- and 132-inch culverts that convey Rolling Hills Creek under the I-405/SR167 interchange. The report defines the areas of investigation; outlines the methodology used; presents a summary of site conditions; and discusses implications relevant to permitting the Renton Village Storm System Improvement Project. ' This document presents the investigation, best professional judgment, and conclusions of Jones & Stokes. Therefore, it should be considered a Preliminary ' Jurisdictional Determination and used with the understanding that it has not been reviewed and approved in writing by the appropriate jurisdictional authorities. May 2006 1 2. Study Area The study area (Figure 1) is bounded to the north by Renton Village parking lots and to the south by the I-405 right-of-way. The east boundary of the study area is the outlet of a culvert that conveys a tributary of Rolling Hills Creek north under I-405, and the west boundary is the inlet of the culverts that convey Rolling Hills Creek south under the I-405/SR 167 interchange. The entire study area is approximately 1.17 acres and includes a 685-foot reach of Rolling Hills Creek. 2.1. Project Area Two different levels of investigation were carried out in two different sections of the study area. A complete wetland delineation was conducted from the culvert outlet at the east boundary of the study area to a point approximately 50 feet downstream of the damaged culvert location. This 0.25-acre area is referred to in this document as the "Project Area" (Figure 1). 2.2. Reconnaissance Area A wetland and stream reconnaissance was performed along the 622-foot reach of Rolling Hills Creek from the west boundary of the Project Area to the west boundary of the study area. This 0.92-acre area is referred to in this document as the "Reconnaissance Area" (Figure 1). r May 2006 O YA Renton . r �+ .�• Municipal Airport V-tea i 90 16 l R R � t 4NON S 7th Street r "Pi ay (, 5 Gt�dy _ W `• Interstate Highway Watercourse Regional Vicinity �S^ Jones & Stokes 9 f --� ti Rolling Hills Creek enters ` into a piped conveyance system at SR 515 and re-emerges at Project Area x. 0� R • I v ,-. 4 - Sources: WSDOT (2005), King County (2006), TerraServer (2002) 0 1,000 2,000 3,000 N Feet Figure 1. Project Vicinity Map Wetland Delineation & Reconnaissance Report Renton Village Storm System Improvement Project May 2006 3. Methods Jones & Stokes conducted a wetland delineation on April 4, 2006, to determine the presence and extent of potential wetlands and waters of the United States in the Project Area. The wetland delineation methods used are those provided by the U.S. Army Corps of Engineers Wetland Delineation Manual (Environmental Laboratory 1987) and the Washington State Wetlands Identification and Delineation Manual (Washington Department of Ecology 1997). Both manuals require the presence of wetland indicators for vegetation, hydrology, and soils in order to consider an area a jurisdictional wetland. Within the Project Area, field sample plots were flagged with blue and white striped flagging. Surface water drainages within the Project Area were also identified and the Ordinary High Water Mark (OHWM) of all drainages was flagged with blue and white striped flagging. In addition to the wetland delineation in the Project Area, and at the request of Gray & Osborne, Jones & Stokes also conducted a wetland and stream reconnaissance of areas directly west of the Project Area. The Reconnaissance Area was assessed for the presence of wetlands and streams based on the same methods, though field data forms were not completed for this area. Literature sources reviewed prior to fieldwork include the following: • U.S. Geological Survey (USGS) topographic map, Renton Quadrangle (USGS 1994) (Figure 2); ■ U.S. Department of Agriculture (USDA) Soils Survey for King County, WA (USDA 2006) (Figure 3). ■ USFWS National Wetland Inventory (NWI) Map (USFWS 2006) (Figure 4); ■ City of Renton Wetlands Inventory Map (Renton Municipal Code (RMC) Figure 4-3-050.Q.5) (Figure 5); ■ City of Renton Water Class Map (RMC Figure 4-3-050.Q.4); and ■ Washington Department of Natural Resources (DNR) Water Type Map (Washington State Department of Natural Resources 2006). 4 May 2006 i7;r, P. 'k�j P r�ton 'V Municipal,,-.,, rt_ 1rPO ell f 16 51 Si -tfi-st t loll die, M Irl Area C F �4 0 16 4, 1 Tukwila - Interstate — Highway M Jones & Stokes I T. Oil %LQM WFSM 0 4;. Sources: USGS 7.5'Quadrangle - Renton, WSDOT (2005) 0 1,000 2,000 3,000 -4 Fee: Figure 2. USGS Topographic Map Wetland Delineation & Reconnaissance Report Renton Village Storm System Improvement Project May 2006 Sources: USGS 7.5'Quadrangle - Renton, WSDOT (2005) 0 1,000 2,000 3,000 -4 Fee: Figure 2. USGS Topographic Map Wetland Delineation & Reconnaissance Report Renton Village Storm System Improvement Project May 2006 RdC k. Renton NVA 0 Municipal' FV �•'� ` - Airport 90 ` Q WPC 1 BeD 16 C BeC 167�Rh 71; S 7th Street P `Nay a Y Ur rally SG fn Area j` USDA Surveyed Soils O Ag, Alderwood gravelly sandy loam O AkF, Alderwood and Kitsap soils a O AmC, Arents, Alderwood material Rolling Hills Creek enters 0 An, Arents, Everett material into a piped conveyance Be, Beausite ravel) sand loam system at SR 515 and gravelly Y re-emerges at Project Area Ev, Everett gravelly sandy loam , 0 In, Indianola loamy fine sand P ➢�'4,='=' ° Ng, Newberg silt loam o T 0 No, Norma sandy loam Of 0 PITS, Pits AgC l� Pc, Pilchuck loamy fine sand > Pu, Puget silty clay loam 'n 4 O Py, Puyallup fine sandy loam w 1 r„ 0 RdC, Ragnar-Indianola association 0 Rh, Riverwash 0 Sk, Seattle muck F (� So, Snohomish silt loam 0 Tu, Tukwila muck So 0 Ur, Urban land W, Water A9e 0 Wo, Woodinville silt loam No Sources: USDA, NRCS, King County SSURGO (2004); TerraServer (2002). WSDOT (2005)) Interstate Highway 0 1,000 2,000 3,000 Local Street N ~ Watercourse Feet Figure 3. USDA Surveyed Soils y5� ]ones & Stokes Wetland Delineation & Reconnaissance Report Renton Village Storm System Improvement Project May 2006 'A zt& Renton '+ Municipal Airport Reconnaissance 5 GO Area p *J Rolling Hills Creek enters 1. into a piped conveyance system at SR 515 and re-emerges at Project Area f �.1 j1 r Sources. USFWS NWI (1988), WSDOT (2005): TerraServer (2002) — Interstate — Highway 0 1,000 2,000 3,000 ® National Wetland Inventory N -^J^ Watercourse Feet ASS Jones & Stokes Figure 4. National Wetland Inventory Map Wetland Delineation & Reconnaissance Report Renton Village Storm System Improvement Project May 2006 MERCER :><> ISLAND Xa BOREN NEWCASTL :.�. COAL CRBFX �; %a•.-fir>�r: `t: r— VUBUTARISS jDA ail:. �:�V \� •' A' ur w. u x 1 PROJECT LOCATION r RE -AL- sit g i` M w ro \ Rolling Hills Creek enters into a piped conveyance system at SR 515 and re-emerges at o ; ` Project Location w Cf l q ROLLING HILLS CREEK uKa DasrRF KENT r- � PANTHER UXd = _ -- Renton Municipal Code Creeks Roads Rivers CityBoundary Wetlands }"```'' Lakes — — — Municipality Boundaries =� ��`-.�>: Source: City of Renton Municipal Code (2006) 0 0.5 We 1 Mlle Figure 5. Renton Wetlands Inventory Map Wetland Delineation & Reconnaissance Report dA Jones & Stokes Renton Village Storm System Improvement Project May 2006 L 1 P� 4. Results The proposed project lies within the Western Hemlock Zone (Franklin and Dymess 1988), a vegetative complex that occupies extensive lowlands and foothills areas of western Washington. Plant communities not altered by logging or urbanization normally consist of western hemlock (Tsuga heterophylla), Douglas -fir (Pseudotsuga menziesii), and western red cedar (Thtja plicata) with an understory of sword fern (Polystichum munitum), vine maple (Ater circinatum), and salmonberry (Rubus spectabilis). Within this vegetative zone, riparian and wetland plant communities tend to be dominated by red alder (Alnus rubra), black cottonwood (Populus balsamifera ssp. trichocarpa), and salmonberry. The study area is located within the Lower Green-Duwamish Basin (Water Resource Inventory Area [WRIA] 9). The majority of the Rolling Hills Creek drainage basin is located upstream and east of the Project Area and Renton Village. Immediately east of Renton Village, at SR 515, Rolling Hills Creek and a tributary enter the Renton Village stormwater drainage system. The storm system conveys flow east to west and discharges Rolling Hills Creek into an open channel in the Project Area. At the west boundary of the Reconnaissance Area, Rolling Hills Creek flows into a 48-inch pipe. A concrete weir adjacent to the 48-inch pipe allows high flows to bypass into a second, 132-inch pipe. These two culverts convey Rolling Hills Creek approximately 'Amile under the 1-405/SR 515 interchange to an open channel adjacent to the Panther Creek wetland on the east side of SR 167. The channel flows through another piped system for approximately 3/4 mile to its confluence with Springbrook Creek. Springbrook Creek flows to the Black River Pump System which pumps into the Green/Duwamish River. The Duwamish River flows into Elliot Bay/Puget Sound approximately 15 miles downstream of the Black River Pump Station. Land use in the project vicinity consists primarily of commercial development along ' the I-405 corridor. Soils in the area are mapped as Urban Land (USDA 2006) indicating land primarily covered by streets, parking lots, buildings, and other structures associated with urban areas. The NWI map and the City's Wetland ' Inventory Map indicate no wetlands within the Project or Reconnaissance Areas. Wetland data was collected at two sample plots in the Project Area and additional observations were made at multiple informal sample plots throughout the Project and Reconnaissance areas. Based on U.S. Army Corps of Engineers (Corps) and ' Washington Department of Ecology (Ecology) criteria (requiring the presence of ' May 2006 Renton Village Storm System Improvement Project wetland indicators for hydrophytic vegetation, hydric soils, and wetland hydrology in order to consider an area a jurisdictional wetland), no wetlands were identified within the Project Area or Reconnaissance Area. 4.1. Wetlands 4.1.1. Vegetation Within the Project and Reconnaissance Areas, vegetation is dominated by Himalayan blackberry (Rebus discolor). Cottonwood and red alder are common, particularly along the banks of Rolling Hills Creek. Additional tree species include black locust (Robinia pseudoacacia), black poplar (Populus nigra), pine (Pinus sp.), and Douglas - fir. Shrub species include English holly (Ilex aquifolium), red -osier dogwood (Corpus stolinifera) apparently planted along the bank of the creek, and Red Elderberry (Sambucus racemosa). Herbaceous species include swordfern scattered throughout the area, fringecup (Tellima grandi fora) along the banks of the creek, field horsetail (Equisetum arvense), and reed canarygrass (Phalaris arundinacea) (Photograph 1, Appendix A). At Sample Plot I (Figure 6 and Data Form 1, Appendix B), located on a bench beside Rolling Hills Creek channel, greater than 50% of the dominant vegetation had a wetland indicator status of facultative (FAC) (Reed 1988) or wetter. This meets Corps and Ecology requirements for wetland vegetation; however, the additional required parameters (wetland hydrology and hydric soils) were not met at this sample plot. Within the Project Area, the ratio of upland plant species increases upslope from this plot location. The vegetation differs in the southeast corner of the Project Area where an approximately 1,983-square foot area is dominated by reed canarygrass and Himalayan blackberry with no overstory (Photograph 2, Appendix A). This area, immediately south of a tributary to Rolling Hills Creek, abuts the I-405 right-of-way and is located on a bench approximately 6 vertical feet above the incised creek. Dominant vegetation, lack of overstory, and proximity to the right-of-way suggest this area has been disturbed. At Sample Plot 2 (Figure 6 and Data Form 2, Appendix B), located within this area, less than 50% of the dominant vegetation had a wetland indicator status of FAC (Reed 1988) or wetter. This does not meet Corps or Ecology requirements for wetland vegetation. Dominant wetland vegetation was not found in conjunction with positive indicators for the two other required parameters (wetland hydrology and hydric soils) at additional, informal sample plots located in the Project and Reconnaissance Areas. May 2006 �� DRAIN A E IE=17.94 STORM DRAIN 112" SE IE=18.35 \\ - h 'XALL 132"CMP IE=16.84 LEGEND Existing Culvert Existing Drainage Existing OHWM Existing Fence (Approx. Location) Existing Quarry Spalls RENTON VILLAGE ,A� PARKING AREA -� B APPROX. EDGE OF PAVEMENT --- - - - -- I- Existing Contour, 5' Existing Contour, 1' Project Area Reconnaissance Area Sample Plot Section Location r V RENTON VILLAGE �� PARKING AREA �%� RIM EL=26.77 12" CMP S STORM DRAIN OUTL IE=25.37 48"CMP S IE=19.39 II IN OUTLET S IE=25.24 24'CMP S IE=20.02 tYM CONCRETE ECOLOG STORM DRAIN CATCH BASIN BLOCK WALL - OUTLET APPROX.) RIM EL=26.32 36" M 12" CMP S IE=24.32 C 12 CMP S IE=2 . APPROX. EDGE F• OF PAVEMENT TRIBUTARY 1 _ OF ROLLING HILLS C EK - _ _--- - -- I PLOT�-PLOT2 ROLLING HILLS CREEK �. TION OF t-405� f � APPROX. LOCA STORM DRAIN OUTLET 8"DI SE IE-23.24 12" N IE IN=22.59 12" S IE OUT=22.49 1-405 DRAINAGE E, a 0' 25' 50' 100' Figure 6. Project Area and Reconnaissance Area Wetland Delineation & Reconnaissance Report % Jones & Stokes Renton Village Storm System Improvement Project May 2006 Wetland Delineation & Reconnaissance Report 4.1.2. Hydrology ' The 2005-2006 winter was wetter -than -average based on historical precipitation records. Total precipitation at Seatac, Washington for the months of December 2005 ' through March 2006 was 123% of the average precipitation for those months over the past 58 years (Western Regional Climate Center 2006). The afternoon and evening ' prior to the delineation, 0.12 inches of precipitation fell in Renton (Weather Underground 2006). ' Indicators of wetland hydrology meeting Corps or Ecology requirements were not found at the two sample plots within the Project Area. ' Similarly, at informal sample plots within the Reconnaissance Area, indicators of wetland hydrology were not found in conjunction with positive indicators of the two other required parameters (hydrophytic plants and hydric soils). 4.1.3. Soils Soils in the Project and Reconnaissance Areas are mapped as Urban Land (USDA 2006), which indicates that the area is primarily covered by impervious surfaces and ' structures associated with urban areas and that the soils have a likelihood of disturbance related to urban development. ' Two field sample plots (Figure 6 and Appendix B) and additional test pits throughout the Project Area indicated that soils are primarily a silty clay loam. The soil matrix ' ranged from chroma two to four. Where present, mottles ranged in abundance from few to common, and in contrast from faint to distinct. However, no data from the field sample plots met the criteria necessary to indicate hydric soils (See Wetland ' Field Data Forms, Appendix B). Similarly, at informal sample plots throughout the Reconnaissance Area, hydric soils ' were not identified in conjunction with positive indicators for the two other required parameters (hydrophytic plants and wetland hydrology). 4.2. Streams Three drainages were identified in the Project and Reconnaissance Areas: Rolling Hills Creek, a tributary to Rolling Hills Creek, and a drainage from I-405 (Figure 6). ' At the east end of the Project Area, the tributary to Rolling Hills Creek daylights from a 36" culvert after passing under 1-405 (Photograph 3, Appendix A). From the culvert outlet, the tributary flows west for 123 feet to the point at which the damaged .J May 2006 Renton Village Storm System Improvement Project 48-inch culvert discharges Rolling Hills Creek into the open channel (Photograph 4, Appendix A). The tributary is estimated to contribute 20-25% of the total flow of the Rolling Hills Creek basin (Gray & Osborne 2006). From its confluence with Rolling Hills Creek at the damaged 48" culvert outlet, the channel continues 685 feet west before entering a 48-inch concrete culvert that conveys Rolling Hills Creek under the I-405/SR 167 interchange. East of the damaged 48-inch culvert outlet, the Rolling Hills Creek tributary channel is approximately 3 feet wide and deeply incised (Photograph 5, Appendix A). Downstream from the damaged culvert outlet, the Rolling Hills Creek channel ranges from approximately 7 to 12 feet wide. Within the Project Area, the creek has steep banks (Figure 7 and Photograph 6, Appendix A) and the substrate ranges from silts to sands to gravel. In the middle of the Reconnaissance Area, benches alternate sides (Figure 7 and Photograph 7, Appendix A). At the west end of the Reconnaissance Area, the stream banks are more gently sloped (Figure 7 and Photograph 8, Appendix A). Both the Rolling Hills Creek tributary and Rolling Hills Creek are jurisdictional waters of the United States. Rolling Hills Creek is identified by the City on the Renton Water Class Map (WCM) as a Class III Stream (RMC Figure 4-3-050.Q.4). The City's Critical Areas Ordinance defines Class III streams as non-salmonid- bearing perennial waters during years of normal rainfall and/or those mapped as Class 3 on the WCM (RMC 4-3-050.L.1 a). The minimum buffer width for Class III streams in the City is 75 feet (RMC 4-3-050.L.5a). The reach of Rolling Hills Creek within the Project and Reconnaissance Areas is not identified on the DNR Water Type Map. However, reaches of Rolling Hills Creek upstream of the Project Area are identified and are designated Type F, indicating the creek may be used by fish for spawning, rearing or migration (Washington State Department of Natural Resources 2006). The third drainage within the Project Area originates at an l8-inch concrete pipe that discharges I-405 drainage into the Project Area. The culvert outlet is approximately 40 feet south of Rolling Hills Creek (Photograph 9, Appendix A). No surface flow was observed in this drainage during the site visit; however, evidence of OHWM / scour and a depression containing standing water were observed between the culvert outlet and the drainage's confluence with Rolling Hills Creek. Based on the evidence of OHWM, and the drainage's direct connection with Rolling Hills Creek (a water of the United States), it is likely that the Corps would consider this drainage jurisdictional. This drainage is not currently classified by the City or the DNR. May 2006 �~ Pavement Ordinary High Water 30 Existing Ground - ------ - - - --- - - ---- --- -- ----- ---- - ---- - 2 5 - - -- - - - - - - - - -- �' 2015 ------- ---- -- ----- ------ - - ----- - - -- - - - - - - iv 10 __ - ---- - - _ - ---- --— --- w— ----- ---- --- --- -- -- ------ SECTION A Not to Scale 30 25 - - _- a� ,i 20 0 15 ---- - cB w 5 - - --- SECTION B Not to Scale inary High Water Existing Ground Dwmmnn+ Ordinary High Water /-- Existing Ground 30 -- --- -- -- - --- -- ------- __- 25 - - - --- --- - - - - - - - - T20 - - --- ---- - - - - - - - -- -- 0 CU 15 10 - - --- w------- -- ----- ---- --.. _--- - --- --- — --- -- - - ------- SECTION C Not to Scale 12" CMP Storm Drain Outlet Ordinary High Water Pavement rF Existing Ground 30 .= 25 - _ - --- - --- 20 0 15 a 10 - w- -- ----- - -- --- --------- —_---- ---- -= -- --- — -- -- -- - ---- --- 0 SECTION D Not to Scale Figure 7. Sections Wetland Delineation & Reconnaissance Report 9� Jones & Stokes Renton Village Storm System Improvement Project May 2006 5. Permitting Implications 5.1. State and Federal Aquatic Permits Activities which may result in a discharge of dredge or fill material into waters of the United States require Section 404 and 401 permits (issued in the state of Washington ' by the Corps and Ecology respectively). Additionally, an Hydraulic Project Approval (HPA) issued by the Washington Department of Fish and Wildlife is ' required for any construction activity that will "use, divert, obstruct, or change the bed flow fresh 77.55.011). or of any of the salt or waters of the state" (RCW ' Rolling Hills Creek is both a state water and a water of the United States and, as such, 404, 401, and HPA permits may be required for activities associated with the replacement of the damaged culvert in the Project Area. However, if all project ' elements remain within the existing culvert footprint, it is possible that the project may be exempt from a 404 permit. If a 404 permit is required, the Nationwide Permits (NWP) that may apply are NWP 3 (Maintenance) and NWP 14 (Linear ' Transportation Crossings). This should be confirmed with the local Corps project manager. ' It is likely that the Corps would also consider the 1-405 drainage located within the Project Area to be a jurisdictional water of the U.S. Determination of the potential jurisdiction of this drainage is up to the discretion of the permitting agencies. If this drainage is identified as a jurisdictional water, activities impacting it may also require permits. The proposed project does not include any alteration or modification to this drainage other than bank protection/stabilization within the channel of Rolling Hills Creek at the damaged culvert outlet. ' To apply for state and federal permits, a Joint Aquatic Resources Permit Application (JARPA), which consolidates multiple permit application forms for federal, state, and local permits, should be submitted. Refer to the instructions on the JARPA form for ' complete submittal requirements. ' May 2006 Renton Village Storm System Improvement Project 5.2. City of Renton Critical Areas Regulations The proposed project may require a permit and/or letter of exemption as established by the Renton Municipal Code (RMC) Critical Areas Regulations. A Critical Areas Regulations review (See RMC 4-3-050 [Critical Areas Regulations] and RMC 4-8 [Permits -General and Appeals]) will be required to ensure compliance with City regulations related to work within the OHWM and buffer of Rolling Hills Creek and, possibly, the I-405 drainage. Additionally, a Stream Study including an Impact Evaluation may be required by the City (See RMC 4-3-050.L.3 and 4-8-120.D.19). Early consultation with the relevant local, state, and federal agencies is recommended to confirm permit requirements. May 2006 �� 1 6. References ' Cowardin, L. M., V. Carter, F. C. Golet, and E. T. LaRoc. 1979. Classification of Wetlands and Deep Water Habitats of the United States. (FWS/OBS-79/31.) ' U.S. Fish and Wildlife Service. Washington, DC. Environmental Laboratory. 1987. U.S. Army Corps of Engineers Wetlands Delineation Manual. (Technical Report 4-87-1.) U.S. Army Corps of Engineers Waterways Experiment Station. Vicksburg, MS. I Franklin, Jerry F., and C.T. Dyrness. 1988. Natural Vegetation of Oregon and Washington. Oregon State University Press. Corvallis, OR I Gray & Osborne, Inc. 2006. Renton Village Storm Repair Hydrologic/Hydraulic Analysis. May. Seattle, WA ' Municipal Research Services Center. 2006. City of Renton Municipal Code (RMC). Available: http://search. mrsc.org/nxt/gateway.dll/mtnmc?f=templates&fn=mtnpage. htm Svid=municodes:Renton. Accessed: January 25 through April 10 2006. Recd, P.B., Jr. 1988. National List of Plant Species that Occur in Wetlands: ' Northwest (Region 9). (Biological Report 88(26.9).) Prepared for U.S. Fish and Wildlife Service Wetland Inventory, Washington, DC. St. Petersburg, FL. Washington Department of Ecology. 1997. Washington State Wetlands Identification ' and Delineation Manual. (Publication No. 96-94.) March. Olympia, WA. Washington State Department of Natural Resources. 2006. Water Type Map. Available: http://www3.wadnr.gov/dnrapp5/website/fpars/viewer.htm. Accessed: April 6, 2006. I Washington State Legislature. 2006. Revised Code of Washington. Available: http://apps.leg.wa.gov/rcw/default.aspx. Accessed: April 5, 2006. ' Weather Underground. 2006. History for Renton Washington. Available: http://www.wunderground.com/history/airport/KRNT/2006/4/3/DailyHistory May 2006 Renton Village Storm System Improvement Project .litml?rcq_city=NA&req_state=NA&req_statenamc=NA. Accessed: April 10, 2006. Western Regional Climate Center. 2006. Monthly Total Precipitation, Seattle Tcoma WSCMO AP, Washington. Available: http://www.wrcc.dri.edu/cgi- bin/cIlMONtpre.pl?waseat. Accessed: April 10, 2006. USDA (U.S. Department of Agriculture). 2006. NCSS Web Soil Survey. Available: http://websoiIsurvey.nres.usda.gov/app/. Accessed: January 24, 2006. USFWS (U. S. Fish and Wildlife Service). 2006. National Wetland Inventory. Available: http://www.ffivs.gov/nwi/. Accessed: April 3, 2006. USGS (U.S. Geological Survey). 1994. Topographic Map. 7.5-Minute Series. Renton Quadrangle. Geological Survey. Prepared by USGS. Denver, CO May 2006 P, 7 L Appendix A Photographs Photograph 1. Typical Project Area Vegetation ' Understory vegetation in the Project Area is dominated by Himalayan blackberry. Dominant tree species are cottonwood and red alder. F, Photograph 2. Vegetation in Southeast Corner of Project Area Vegetation in the southeast corner of the Project Area is dominated by reed canarygrass and Himalayan blackberry. (Photo taken looking west from east boundary of Project Area). . , Photograph 3. Rolling Hills Creek Tributary Culvert Outlet A tributary to Rolling Hills Creek discharges from a 36" cmp culvert at the east boundary of the Project Area. Photograph 4. Renton Village Storm System Culvert Outlet w Rolling Hills Creek discharges from the damaged 48-inch corrugated metal pipe. Quarry spalls border the creek for 24 feet until its confluence with the tributary to Rolling Hills Creek. VIM 7:- :14i IVA, wqff Photograph 7. Rolling Hills Creek — Reconnaissance Area Rolling Hills Creek Reconnaissance Area (looking west). Photograph 8. Rolling Hills Creek Culvert Inlet — Reconnaissance Area Rolling Hills Creek at west end of in Reconnaissance Area (looking west towards the 48" culvert inlet). A_4 Photograph 9.1-405 Drainage Culvert Outlet u The intermittent 1405 drainage outlets from a culvert at the south boundary of the ' Project Area and continues approximately 40 feet north to its confluence with Rolling Hills Creek. 1 I Appendix B I I 1 Wetland Delineation Data Forms DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) Project/Ste: T-T�M Vku-Pcbt STap2M CYS1F1� IMP1ZoYtMtNT t�2dj pate: _ `A.Iu/06 Applicant/Ov. CITY ^ ; ' ;;E; a ro r i County: k� NCh Investigator(s�: MA E 1 D . jo'rV NSo rs Do normal circumstances exist on site? is the site significantly disturbed (atypical situation)? Is the area a potential problem area? (If needed, exolain an VEGETATION `U No Community ID: i )Pt. Yes TransectlD: Yes o) Plot 10: Dominant Plant Species Stratum Indicator Dominant Plant Species Stratum Indicator 1. l�ot��LU S 3ALSh1�1FEt¢A T 'FIN C- 9. 2. F2J3yS DASC0LOiZ S F Lv 10. 3. Ai -NOS FACE 11 4. 12. 5. 13. 6. 14. 7. 15. 8. 16. Dominant Species .............................. ....... .:.._.......... ......... .................... ................................. ........ _...... ..._.. Percent of dominant species that are OBL, FACW or FAC (excludingFAC- / Remarks: i� L t S -Z�, oM i HYDROLOGY _ Recorded Data (Describe in Remarks): _ Stream, Lake, or Tide Gauge _ Aerial Photographs Other No Recorded Data Available Feld Observations: Depth of Surface Water. Depth to Free Water in Pit: Depth to Saturated Soil: Wetland Hydrology Indicators Primary Indicators: _ Inundated _ Saturated in Upper 12 Inches _ Water Marks _ Drift Lines _ Sediment Deposits _ Drainage Patterns in Wetlands Secondary Indicators (2 or more required): Npti11= (in.) Oxidized Root Channels in Upper 12 Inches -Water-Stained Leaves NOKE pn.j Local Soil Survey Data FAC-Neutral Test (fin.) Other (Explain in Remarks) 11 Remarks: , yo WETLh�O t1Y �wC-,`f %w.,\Lxm-o-s O3SE�`llrtj Snii S Map Unit Name (Series and Phase): Drainage Class: tk/A Field Obseriations Taxonomy (Subgrauo). Confirm Maoced Type? Yes No Profile Descriptions: Depth .. Matrix -Color Mottle Colors Mottle (inches) Horizon (Munsell .Moist) (Munseil Moist) Abunc Structure, etc. A t-\ot1 Z. L-t ' CLlh`C LON \ 4.5 Y[a- ti /3 1 D Y R b/ ,4 10 Y CZ 5/� LD M M 11,1 r 7?1k lJT _ S t -ry (-t-h9 ................... _.................... _........... _.................. Hydric Soil Indicators: Hlstosol Histic Epipedon Sulfidic Odor Aquic Moisture Regime Reducing Conditions Gleyed or Low-Chroma Colors Concretions High Organic Content in Surface Layer in Sandy Soils Organic Streaking in Sandy Soils Listed on Local Hydric Soils Ust Listed on National Hydric Soils List other (Explain in Remarks) Remarks: N p \Aqp2�tr So\L 1Dt�-Mfi ,. WGTt zimn nFTERMINATION Hydrophytic Vegetation Present? Yes No (Circle) (Circle) Wetland Hydrology Present? es Na Hydric Soils Present? Yes Is this sampling point within a wetland? Yes No Remarks: I tJ Ot c 2 l W .Sots 5 �LAr L•0Ch `� Pt�'p—Y, Z� .E SA OF NC- Mu-S. CRr--E 1K E1ACF\ (L W -a fC'cYL -'Rt nj \'r-EXL 61 S ! i,\1 t l ezF C t�t2Zt"P BAN-- Mfi(Z 2 oo 6 kb 54 - 4 E AJI- Y ►'L't(-1 9 ft4 W1:kE') Approved by HCUSACE 3/92 DATA FORM ROUTINE WETLAND DETERMINATION (1987 COE Wetlands Delineation Manual) PrciecJSite: >✓T tCU� V\L.I�A<E.1= �{LWt �`IST'cM 1MP �Jr=,n�trvC- _ti4i Date: / LA 106 ---r— A olicantiOwner. G1T� OF �tTRON P. County: V_1 N 61% Investi ator s): E N � • Jo KSo ...........�......(...... State: Do normal circumstances exist on site? �. No Community ID: J P is the site significantly disturbed (atypical situation)? 9 Y ( 1P ) Yes No TransectlD: Is the area a potential problem area? (If needed, explain on reverse) Yes_ Plot ID: Z VEGETATION Dominant Plant Scecies Stratum Indicator Dominant Plant Scecies Stratum Indicator 1.� S -to co t_o'(k_ 2. t" iW_A.(Li 5 liRvhiD� t� P. c ,� SAG 10. 3. 11. 4. 12 S. 13. 6. 14. 7. 15. 8. 16. Dominant Species ..... _........................ _...... ..._.. Percent of dominant species that are OBL. FACW or FAC(excluding FAC-). Remarks: _ T' l.o T S N oT -z'o \IA \ N PcmA to R D R-a t�N ` n C, YEG�t`Cc-1 0 of _ LAnI�a v`. ry t"N N"I JC�e_rPMG P4 - -N P\ C/e1 --,-b bt S tV 23 FU i. HYDROLOGY _ Recorded Data (Describe in Remarks): Wetland Hydrology Indicators _ Stream, Lake, or Tide Gauge Primary Indicators: _ Aerial Photographs Inundated _ Other _ _ Saturated in Upper 12 Inches Na Recorded Data Available _ Water Marks _ Drift Lines _ Sediment Deposits _ Drainage Patterns in Wetlands Field Observations: Depth of Surface Water. 1J0 NE (In.) Secondary Indicators (2 or more required): Oxidized Root Channels in Upper 12 Inches Leaves Depth to Free Water in PR: t'm r1 t on.) —Water-Stained _ Local Soil Survey Data FAC-Neutral Test Depth to Saturated Soil: > 1 6 (in.) _ _ Other (Explain in Remarks) Remarks: Nd WECI-rJ� t�`�DfLr'�G� IN��C>�S 6BSt✓r2JL=% ''i Vsc t,0(4 s A1V"x. 6 Verncm,, f�A(5bdE WAIF _)Z iN Na SOILS 't Map Unit Name . (Series and Phase): J(Z.t'tm LAo-11-, Drainage Class: N/A Field Observations Taxonomy (Subgrcuo): Confirm iMa,.R ed Type? „Yes No ........................�A. .... .................. Profile Descrictions: Depth Matrix Color Mottle Colors Mottle (inches) Horizon Munsell Moist Munsell Moist) Abundance/Contrast Texture, Concretions, Structure, etc. to�R3/2 to �'le. Si2. t o 1� 9 Gat-rti o 3_ )lS•tl t) CT s%LT \,4 M-Xt C,P-, l EL NIA st�-� c,of4rn ................... _.................... _.............................. Hydric Soil Indicators: Histosol Histic Epipedon Sulftdic Odor Aquic Moisture Regime Reducing Conditions Gleyed or Law-Chroma Colors Concretions High Organic Content in Surface Layer in Sandy Sails Organic Streaking in Sandy Sails Listed on Local Hydric Soils List Listed on National Hydric Soils List Other (Explain in Remarks) I Remarks: No H.�pfLkL so\t_ It1Ao\cAr"25 O3SG2�8� WETLAND DETERMINATION Hydrophytic Vegetation Present? Yes (Circle) (Circle) Wetland Hydrology Present? Yes t -- Hydric Solis Present? Yes No Is this sampling point within a wetland? Yes No Remarks: _ Nei �oS' oN r"C kN 6 );eS64I5 —Z,r� S-n2E v"M tZ" u.oeA-t— 21i��`f�� aN ev�rJL U�- by d Zoo6 fiS Ge✓APfiea-0 -'TO SEAVL ?i2.E1.kP AJElfzPc&Z'). Approved by HQUSACE 3/92