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Home My WebLink AboutRS_wetland_assessment_oct_2015_v1.pdf S TREAM & W ETLAND D ELINEATION R EPORT Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis, Renton, WA Prepared for: City of Renton c/o Erik Waligorski, PE Stantec Consulting Services Inc. 11130 NE 33rd Place Suite 200 Bellevue, WA 98004 Prepared by: October 12, 2015 The Watershed Company Reference Number: 131113 The Watershed Company Contact Person: Katy Crandall Hugh Mortensen, PWS Cite this document as: The Watershed Company. October 12, 2015. Wetland and Stream Delineation Report for Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis, Renton, WA. The Watershed Company October 2015 T ABLE OF C ONTENTS Page # 1 Introduction ......................................................................................... 1 1.1 Location and Study Area ................................................................................ 1 1.2 Project Description ......................................................................................... 3 2 Wetlands and Streams ....................................................................... 3 2.1 Methods ........................................................................................................... 3 2.2 Findings ........................................................................................................... 4 2.2.1 Streams ............................................................................................................... 4 2.2.2 Wetlands ............................................................................................................. 6 2.2.3 Non-Wetland ....................................................................................................... 8 2.3 Local Regulations ........................................................................................... 8 2.3.1 Streams ............................................................................................................... 8 2.3.2 Wetlands ............................................................................................................. 9 2.4 State and Federal Regulations ....................................................................... 9 References ............................................................................................... 11 Appendix A Delineation Map Appendix B Wetland Data Forms Appendix C Wetland Rating Forms The Watershed Company October 2015 1 S TREAM & W ETLAND D ELINEATION R EPORT T HUNDER H ILLS S ANITARY S EWER I NTERCEPTOR A LTERNATIVES A NALYSIS 1 I NTRODUCTION The City of Renton plans to improve, evaluate, and possibly upgrade system components and access for the Thunder Hills Sanitary Sewer Interceptor line located adjacent to Thunder Hills Creek. This study was completed to inform the project team of wetland and stream conditions within the project site. This report summarizes the findings of this wetland and stream delineation study and details applicable local, state, and federal regulations. 1.1 Location and Study Area The proposed project is located in the Thunder Hills Creek corridor in Renton, Washington. The project area falls within the Black River sub-basin of the Duwamish-Green Watershed (Section 20, Township 23 North, Range 05 East; WRIA 9). The portion of the Thunder Hills Sanitary Sewer Interceptor that is being studied runs from Grant Avenue South at its upstream end to I-405. (Figure 1). The study area includes those areas within approximately 200 feet of either side of Thunder Hills Creek. Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis Wetland and Stream Delineation Report 2 Figure 1.Depiction of approximate project area and vicinity. Study Area The Watershed Company October 2015 3 1.2 Project Description Thunder Hills Sanitary Sewer Interceptor was installed in 1965 and, like many sewer projects of that time, was installed in a stream valley to take advantage of favorable gravity-flow conditions. It consists of approximately 3,600 lineal feet of 10-inch to 18-inch concrete pipe that runs beneath or adjacent to Thunder Hills Creek. The depth of the pipe varies, and may be greater than 30-feet in some areas. Currently, access to the existing sewer interceptor is poor and the condition and exact location of the line is unknown. Erosion along the creek has compromised the sewer interceptor in the past; portions of the stream bank were stabilized with gabion baskets in the early 1980’s, and more repairs that used large quantities of rip-rap armoring were done in 2008 and 2009. The purpose of the project is to study the existing sewer line condition and make recommendations for repair and access improvement. Additionally, the City of Renton is interested in evaluating restoration options for the Thunder Hills Creek corridor to minimize potential future erosion and damage to the interceptor. 2 W ETLANDS AND STREAMS 2.1 Methods Public-domain information was reviewed for this delineation study. Sources include U.S. Department of Agriculture’s (USDA) Natural Resources Conservation Service Soil maps, U.S. Fish and Wildlife Service (USFWS) National Wetland Inventory maps, Washington Department of Fish and Wildlife’s (WDFW) interactive mapping programs (SalmonScape, PHS on the Web), City of Renton’s Mapping Applications (COR Maps), and King County’s GIS mapping website (iMAP). The study area was visited April 23 & 29, and May 1 & 12, 2014. Ecologists Katy Crandall and Mike Foster delineated wetland and stream boundaries. Boundaries and classifications were verified in the field by Hugh Mortensen, PWS. Wetland boundaries were determined on the basis of an examination of vegetation, soils, and hydrology. Wetland areas were evaluated using methodology from the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region Version 2.0 (Regional Supplement) (Corps 2010). Areas meeting the criteria set forth in the Regional Supplement were determined to be wetland. Soil, vegetation, and hydrologic parameters were sampled at several locations within the study area to determine wetland presence or absence. Seven data points were recorded and Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis Wetland and Stream Delineation Report 4 marked in the field with yellow- and black-striped flags. The edges of wetlands were flagged with pink-and-black-striped flags. Flag locations were surveyed by Stantec and are shown on the enclosed map. Delineated wetlands were initially classified using the Washington State wetland rating system for Western Washington (Hruby 2004), and wetland ratings were updated based on the 2014 rating system (Hruby 2014). The ordinary high water mark (OHWM) of streams within the project area was determined based on the definition provided by WAC 173-22-030(11). The OHWM is located by examining the bed and bank physical characteristics and vegetation to ascertain the water elevation for mean annual floods. The OHWM was marked with blue- and white-striped flags. Field observations and published information were used to classify streams according to Renton Municipal Code (RMC) 4-3-050, adopted June 1, 2015. 2.2 Findings The study area is located along approximately 3,600 lineal feet of Thunder Hills Creek in Renton, WA, in the Black River sub-basin of the Duwamish-Green Watershed. The study area is mostly forested. Power line corridors transect the study area in four locations. Vegetation in these corridors is disturbed grass or scrub-shrub often containing significant amounts of invasive plant species. There is a trail used by pedestrians adjacent to the creek through most of the study area; this trail was originally established as an access road. Portions of this trail are no longer passable by vehicles, although other sections have been maintained or repaired. Thunder Hills Creek, seven tributary streams, and six small wetlands were delineated during the study. Wetland, stream, and non-wetland areas are described below. 2.2.1 Streams Thunder Hills Creek Thunder Hills Creek (flagged as Stream A) is a perennial stream that flows north-northwest through the study area. According to City of Renton Maps, SalmonScape, and PHS online mapping and data sources, this section of Thunder Hills Creek does not contain salmonid fish species. A total fish passage barrier is located in the downstream section of the study area under Interstate- 405. Thunder Hills Creek enters the study area from the south via a 36-inch culvert. Upstream from the study area, the creek flows in a steep-sided ravine for approximately 850 feet before it becomes piped along S 18th Street and daylights in the study area. Downstream of the study area, Thunder Hills Creek flows southwest and eventually into Rolling Hills Creek which is a tributary of the Black River. The Watershed Company October 2015 5 Multiple projects to prevent erosion have placed bed and bank armoring along a significant portion of the stream channel. Large, loose riprap occurs throughout the channel and gabion baskets armor sections in the northern portion of the study area. Several small tributary streams were delineated along this section of Thunder Hills Creek and are described below. Tributary Streams Stream E Stream E is located at the upstream end of the study area. It is associated with Wetland A (see below). Stream E is a presumed seasonally flowing stream that enters the study area via a culvert under Grant Avenue S. A second culvert carries the flow under the pedestrian trail adjacent to Thunder Hills Creek. The flow likely contains both groundwater and surface water run-off from nearby roads and residences. Stream F Stream F, downstream from Stream E, is also a presumed seasonally-flowing stream and is fed by groundwater seeps in the hillside. A culvert under the pedestrian trail conveys the flow of Stream F into Thunder Hills Creek. Stream G Stream G, downstream of Stream F, is a presumed seasonally flowing stream that enters the study area via a culvert under Grant Avenue S. The flow likely contains both groundwater and surface water runoff from nearby roads and residences. Streams G flows over the pedestrian trail and into Thunder Hills Creek. Based on the proximity of the streams to one another, it seems possible that the flows carried in Streams G and F were previously conveyed in one stream channel that began at the culvert outfall for Stream G and continued to the culvert under the pedestrian trail associated with Stream F. It appears that the flow from Stream G was redirected which has caused the stream to flow across the trail instead of flowing into the nearby culvert. Streams B, D, and H Streams B, D, and H are similar in size and character. They are relatively steep, seasonally-flowing streams that are located in the northern portion of the study area and enter the study area from the east. They flow in open channels to Thunder Hills Creek. Renton maps (COR Maps) show some wetlands above these streams that may support stream-flow. Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis Wetland and Stream Delineation Report 6 Stream C Stream C is the most downstream tributary, located immediately southeast of I- 405. It is a steep, seasonally-flowing stream that originates from groundwater seeps in the hillside and flows into Wetland E (see below). It is presumed that all tributary streams described previously do not contain salmonid fish species due to a lack of connectivity with salmon-bearing streams downstream and a lack of resident fish-habitat upstream. 2.2.2 Wetlands Wetland A Wetland A contains slope and depressional hydrogeomorphic (HGM) classes and is rated depressional. It is located at the southern end of the study area. Wetland A is characterized as having a forested Cowardin vegetation community dominated by Oregon ash in the canopy, with salmonberry, skunk cabbage, sword fern, and lady fern common in the understory. Stream E flows through the middle of the wetland. Wetland A is bordered by the pedestrian trail to the west and Grand Avenue S to the east. The soil in Wetland A was a (10 YR 3/1) sandy loam with a high organic content. It met hydric soil indicator Redox Dark Surface (F6). Some surface water was present in the wetland. At the data point, (DP-1), a water table was present at six inches and soils were saturated to the surface. There are several sources of hydrology to Wetland A. Along the margins of Stream E, the wetland is supported by overbank flooding; groundwater supports wetland conditions upslope of the stream; and the intermittently-flowing, constricted outlet results in water impoundment in the lower portion of the wetland, along the pedestrian trail. Wetland B Wetland B is a small riverine wetland that contains forested and emergent Cowardin vegetation classes. It is located downstream of Wetland A on the east side of Thunder Hills Creek. Dominant plants include red alder in the canopy, with salmonberry, reed canary grass and giant horsetail in the understory. Soils in Wetland B were a (10 YR 3/1) sandy loam to ten inches with redoximorphic features present which meets hydric soil indicator Redox Dark Surface (F6). A water table was present at eight inches below the soil surface and soils were saturated to the surface during the study. Wetland B receives its hydrology from overbank flooding of Thunder Hills Creek. Wetland C Wetland C is a slope wetland on the east side of Thunder Hills Creek, downstream from Wetland B. The vegetation in Wetland C is made up of scrub- shrub and emergent Cowardin vegetation communities. Dominant plants include Sitka willow, Himalayan blackberry, reed canarygrass and bittersweet The Watershed Company October 2015 7 nightshade. Soils were a (10 YR 3/2) sandy loam to nine inches; below nine inches the matrix was depleted with prominent redoximorphic concentrations meeting the hydric soil indicator Depleted Below Dark Surface (A11). Wetland C is located on a bench that is hydrologically disconnected from the stream. The main source of hydrology comes from groundwater. The water table was observed at eleven inches below the soil surface at the time the study was conducted; soils were saturated to the surface. Wetland D Wetland D is a small riverine wetland that contains an emergent Cowardin vegetation classes. It is located downstream of Wetland D on the east side of Thunder Hills Creek. Dominant plants include reed canarygrass and giant horsetail with some Himalayan blackberry along the margins. Soils in Wetland D were a (10 YR 3/2) sandy loam to eight inches; at eight to sixteen inches, the soil was depleted with prominent redoximorphic features present occurring as soft masses and pore linings. The soil met hydric soil indicators Depleted Below Dark Surface (A11) and Depleted Matrix (F3). Soils were saturated at ten inches below the soils surface. Wetlands D receives its hydrology from overbank flooding of Thunder Hills Creek. Wetland E Wetland E is located at the northern (downstream) end of the study area, southeast of I-405. Wetland E is a disturbed wetland that has formed on top of fill material and is located on what once was likely the stream channel of Thunder Hills Creek. The culvert that carries Thunder Hills Creek under I-405 is under Wetland E; the culvert inlet is located just south of the wetland. Wetland E is a depressional wetland with scrub-shrub and emergent vegetation classes. Dominant vegetation includes red alder, American speedwell, small-fruited bulrush, and common rush. The wetland formed over large quarry spall fill material and digging to assess soil conditions was not possible. Most of the wetland had standing water with algae present; surface water was approximately eight inches deep near the center of the depression. The standing water appeared to infiltrate the substrate slowly and discharge near the Thunder Hills culvert inlet to the south. Very strong hydrologic and wetland vegetation indicators were used to determine wetland status. Wetland F Wetland F is located on the west side of Thunder Hills Creek, south of Wetland E. It is located on top the pedestrian trail/access road. A seep, exposed by the construction of the road, and visible during the site visit, appears to be the driving hydrologic force in this wetland. Wetland F is a slope wetland with an emergent Cowardin vegetative community. Dominant plants include creeping buttercup, giant horsetail, lady fern, and piggyback plant. A large portion of the wetland is unvegetated and muddy. Soils were compact. From zero to six inches Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis Wetland and Stream Delineation Report 8 below the surface, the soil was a (10 YR 4/1) sandy loam with prominent redoximorphic features occurring as soft masses and pore linings present; this meets hydric soil indicator Depleted Matrix (F3). Soils were saturated during the study. 2.2.3 Non-Wetland Non-wetland areas are dominated mainly by a native deciduous forest with a few coniferous trees. The forest has an understory that includes typical shade- tolerant native shrubs and groundcovers. Patches of locally-dominant invasive weeds such as Himalayan blackberry and English ivy are also present throughout the forest. Dense monocultures of Himalayan blackberry and Japanese knotweed predominate where powerlines cross the stream and along forested edges. 2.3 Local Regulations 2.3.1 Streams Streams in the City of Renton are regulated under the Critical Areas Regulations, Streams and Lakes (4-3-050). Stream buffer widths are determined based on stream class. The City of Renton maps Thunder Hills Creek as a Type Np stream. Type Np streams are defined as perennial, non-fish-bearing waters, and require a standard buffer width of 75 feet. The tributary streams are all Class Ns streams, or streams that are intermittently-flowing, non-fish-bearing waters. None of the streams found during this study would be considered non-regulated streams, which are defined as intentionaly created. Table 1. Streams delineated within the study area, their classifications, and associated buffer widths Stream Name Renton Stream Classification Buffer Width (ft) Thunder Hills Creek Type Np 75 Stream B Type Ns 50 Stream C Type Ns 50 Stream D Type Ns 50 Stream E Type Ns 50 Stream F Type Ns 50 The Watershed Company October 2015 9 Stream G Type Ns 50 Stream H Type Ns 50 2.3.2 Wetlands Wetlands in the City of Renton are regulated under the Critical Areas Regulations, Wetlands (4-3-050). Wetlands are classified based on the 2014 Ecology Rating System. Wetland buffers are based on Category, habitat score, and whether the land use intensity qualifies as “low-intensity”. Proposed uses for this project do not qualify as low-intensity uses. Wetland categories, habitat scores, and buffers are shown in Table 2. Table 2. Wetland delineated within the study area, their categories, habitat functions, and standard buffer widths Wetland Category Habitat Function Standard Buffer Width (ft) Wetland A 3 Low (4 points) 75 Wetland B 3 Moderate (6 points) 100 Wetland C 4 Moderate (5 points) 50 Wetland D 3 Moderate (5 points) 100 Wetland E 3 Moderate (5 points) 100 Wetland F 3 Moderate (5 points) 100 2.4 State and Federal Regulations Wetlands and streams are also regulated by the Corps under Section 404 of the Clean Water Act. Any filling of Waters of the State, including wetlands (except isolated wetlands), would require notification and permits from the Corps. Federally permitted actions that could affect endangered species (i.e. Chinook salmon, steelhead, or bull trout) may also require a biological assessment study and consultation with the U.S. Fish and Wildlife Service and/or the National Marine Fisheries Service. Application for Corps permits may also require an individual 401 Water Quality Certification and Coastal Zone Management Consistency determination from Ecology and a Cultural Resource Study in accordance with Section 106 of the National Historic Preservation Act. Thunder Hills Sanitary Sewer Interceptor Alternatives Analysis Wetland and Stream Delineation Report 10 In general, neither the Corps nor Ecology regulates wetland or stream buffers, unless direct impacts are proposed. When direct impacts are proposed, mitigation may be required to employ buffers based on Corps and Ecology joint regulatory guidance. Any project that uses, obstructs, diverts, or changes the natural flow or bed of state waters must also acquire a Hydraulic Project Approval (HPA) from WDFW. The requirement for an HPA extends to all overwater structures and pilings. The information contained in this report is based on the application of technical guidelines currently accepted as the best available science and in conjunction with the manuals and criteria outlined in the methods section. All discussions, conclusions and recommendations reflect the best professional judgment of the author(s) and are based upon information available to us at the time the study was conducted. All work was completed within the constraints of budget, scope, and timing. The findings of this report are subject to verification and agreement by the appropriate local, State and Federal regulatory authorities. No other warranty, expressed or implied, is made. The Watershed Company October 2015 11 R EFERENCES COR Maps. City of Renton Mapping Applications. [Accessed October 12, 2015]. http://rentonwa.gov/government/default.aspx?id=29886 Cowardin et. al. 1979. Classification of Wetlands and Deepwater Habitats of the United States. U.S. Department of the Interior, Fish and Wildlife Service, Washington, D.C. Hruby, T. 2004. Washington State wetland rating system for Western Washington – Revised. Washington State Department of Ecology Publication #04-06-025. Priority Habitats and Species Maps (PHS). Washington Department of Fish and Wildlife. [Accessed October 12, 2015]. http://wdfw.wa.gov/mapping/phs/ SalmonScape. Washington Department of Fish and Wildlife. [Accessed October 12, 2015]. http://wdfw.wa.gov/mapping/salmonscape/ U.S. Army Corps of Engineers (Corps). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region Version 2.0. Washington State Department of Ecology (Ecology). 1997. Washington State Wetlands Identification and Delineation Manual. The Watershed Company October 2015 Appendix A - I A PPENDIX A Delineation Map JOB NUMBER:SHEET NUMBER:S c i e n c e & D e s i g nPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:NO.DATE 750 Sixth Street SouthKirkland WA 98033p 425.822.5242 f 425.827.8136www.watershedco.comSHEET SIZE:ORIGINAL PLAN IS 11X17.SCALE ACCORDINGLY.BY DATE PRINTED BY FILENAME SUBMITTALS & REVISIONS DESCRIPTION© Copyright- The Watershed CompanyTHUNDER HILLS INTERCEPTOR DELINEATION MAP PREPARED FOR STANTEC RENTON, WAHM--CLHM,SS131113OF 61 10-21-15 REVIEW SET CL 10/21/15 COURTNEY LANDOLL 131113 DELIN MAP.DWGDELINEATION MAP SHEET OVERVIEWNOTES1. CRITICAL AREAS DELINEATED BY THEWATERSHED COMPANY IN APRIL AND MAYOF 2014.2. SURVEY RECEIVED FROM STANTEC.3. SOME FEATURES ARE APPROX., NOTSURVEYED (WHERE NOTED ONSUBSEQUENT SHEETS)W1400'0100' 200'SHEET W2SHEET W3SHEET W4SHEET W5SHEET W6STREAM CWETLAND ESTREAM DWETLAND FTHUNDER HILLSCREEK (STREAM A)WETLAND DWETLAND CWETLAND BSTREAM HSTREAM GSTREAM FSTREAM E /WETLAND ASTREAM B JOB NUMBER:SHEET NUMBER:S c i e n c e & D e s i g nPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:NO.DATE 750 Sixth Street SouthKirkland WA 98033p 425.822.5242 f 425.827.8136www.watershedco.comSHEET SIZE:ORIGINAL PLAN IS 11X17.SCALE ACCORDINGLY.BY DATE PRINTED BY FILENAME SUBMITTALS & REVISIONS DESCRIPTION© Copyright- The Watershed CompanyTHUNDER HILLS INTERCEPTOR DELINEATION MAP PREPARED FOR STANTEC RENTON, WAHM--CLHM,SS131113OF 61 10-21-15 REVIEW SET CL 10/21/15 COURTNEY LANDOLL 131113 DELIN MAP.DWGENLARGEMENT WETLAND ECATEGORY 3100' BUFFERW260'015' 30'EXISTINGSEWER LINETHUNDER HILLS CREEKTYPE NP75' BUFFERWETLAND FCATEGORY 3100' BUFFERSTREAM DTYPE NS50' BUFFEREXISTINGGRAVELSTREAM BTYPE NS50' BUFFERSTREAM C (LOCATIONAPPROX., NOT SURVEYED)TYPE NS50' BUFFERMATCH LINE SHEET W3 JOB NUMBER:SHEET NUMBER:S c i e n c e & D e s i g nPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:NO.DATE 750 Sixth Street SouthKirkland WA 98033p 425.822.5242 f 425.827.8136www.watershedco.comSHEET SIZE:ORIGINAL PLAN IS 11X17.SCALE ACCORDINGLY.BY DATE PRINTED BY FILENAME SUBMITTALS & REVISIONS DESCRIPTION© Copyright- The Watershed CompanyTHUNDER HILLS INTERCEPTOR DELINEATION MAP PREPARED FOR STANTEC RENTON, WAHM--CLHM,SS131113OF 61 10-21-15 REVIEW SET CL 10/21/15 COURTNEY LANDOLL 131113 DELIN MAP.DWGENLARGEMENTW360'015' 30'THUNDER HILLS CREEKTYPE NP75' BUFFEREXISTINGGRAVELEXISTINGSEWER LINESTREAM H(LOCATION APPROX.,NOT SURVEYED)TYPE NS50' BUFFERMATCH LINE SHEET W2 MATCH LINE SHEET W4 JOB NUMBER:SHEET NUMBER:S c i e n c e & D e s i g nPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:NO.DATE 750 Sixth Street SouthKirkland WA 98033p 425.822.5242 f 425.827.8136www.watershedco.comSHEET SIZE:ORIGINAL PLAN IS 11X17.SCALE ACCORDINGLY.BY DATE PRINTED BY FILENAME SUBMITTALS & REVISIONS DESCRIPTION© Copyright- The Watershed CompanyTHUNDER HILLS INTERCEPTOR DELINEATION MAP PREPARED FOR STANTEC RENTON, WAHM--CLHM,SS131113OF 61 10-21-15 REVIEW SET CL 10/21/15 COURTNEY LANDOLL 131113 DELIN MAP.DWGENLARGEMENTW460'015' 30'THUNDER HILLS CREEKTYPE NP75' BUFFEREXISTINGGRAVELWETLAND BCATEGORY 3100' BUFFERWETLAND D(LOCATION APPROX.,NOT SURVEYED) CATEGORY 3100' BUFFERWETLAND C(LOCATION APPROX.,NOT SURVEYED) CATEGORY 450' BUFFERMATCH LINE SHEET W3 MATCH LINE SHEET W5 JOB NUMBER:SHEET NUMBER:S c i e n c e & D e s i g nPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:NO.DATE 750 Sixth Street SouthKirkland WA 98033p 425.822.5242 f 425.827.8136www.watershedco.comSHEET SIZE:ORIGINAL PLAN IS 11X17.SCALE ACCORDINGLY.BY DATE PRINTED BY FILENAME SUBMITTALS & REVISIONS DESCRIPTION© Copyright- The Watershed CompanyTHUNDER HILLS INTERCEPTOR DELINEATION MAP PREPARED FOR STANTEC RENTON, WAHM--CLHM,SS131113OF 61 10-21-15 REVIEW SET CL 10/21/15 COURTNEY LANDOLL 131113 DELIN MAP.DWGENLARGEMENTW560'015' 30'THUNDER HILLS CREEKTYPE NP75' BUFFERSTREAM GTYPE NS50' BUFFERSTREAM FTYPE NS50' BUFFERMATCH LINE SHEET W4 MATCH LINE SHEET W6 JOB NUMBER:SHEET NUMBER:S c i e n c e & D e s i g nPROJECT MANAGER: DESIGNED: DRAFTED: CHECKED:NO.DATE 750 Sixth Street SouthKirkland WA 98033p 425.822.5242 f 425.827.8136www.watershedco.comSHEET SIZE:ORIGINAL PLAN IS 11X17.SCALE ACCORDINGLY.BY DATE PRINTED BY FILENAME SUBMITTALS & REVISIONS DESCRIPTION© Copyright- The Watershed CompanyTHUNDER HILLS INTERCEPTOR DELINEATION MAP PREPARED FOR STANTEC RENTON, WAHM--CLHM,SS131113OF 61 10-21-15 REVIEW SET CL 10/21/15 COURTNEY LANDOLL 131113 DELIN MAP.DWGENLARGEMENTW660'015' 30'STREAM ETYPE NS50' BUFFERWETLAND ACATEGORY 375' BUFFERTHUNDER HILLS CREEKTYPE NP75' BUFFERMATCH LINE SHEET W5 The Watershed Company October 2015 Appendix B - I A PPENDIX B Wetland Data Forms 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-1 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Hillslope Slope (%)5-10 Local relief (concave, convex, none)Concave Subregion (LRR)A Lat Long Datum Soil Map Unit Name AgC –Alderwood gravelly sandy loam (6-15%)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Wetland A in-pit VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Fraxinus latifolia 60 Y FACW Number of Dominant Species that are OBL, FACW, or FAC:4 (A)2.Corylus cornuta (rooted out) 3.Total Number of Dominant Species Across All Strata:5 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:80 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Prevalence Index Worksheet 2.Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Stachys cooleyae 15 Y FACW 2.Equisetum telmateia 5 N FACW Prevalence Index = B / A = 3.Ranunculus repens 10 Y FAC 4.Glyceria elata 10 Y FACW Hydrophytic Vegetation Indicators 5.Athyrium filix-femina 2 N FAC X Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. 42 = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1.Rubus armeniacus 10 Y FACU 2. = Total Cover % Bare Ground in Herb Stratum 60 Remarks: 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-1 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling Point – DP-1 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-14 10 YR 3/1 100 Sandy loam High organic content 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: Organics masking redox HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): Water Table Present? Yes No Depth (in): 6” BGS Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): to surface Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water nearby 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-2 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Hillslope Slope (%)<5 Local relief (concave, convex, none)None Subregion (LRR)A Lat Long Datum Soil Map Unit Name AgD –Alderwood gravelly sandy loam (15-30%)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Wetland B in-pit VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Alnus rubra 30 Y FAC Number of Dominant Species that are OBL, FACW, or FAC:4 (A)2. 3.Total Number of Dominant Species Across All Strata:4 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:100 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Rubus spectabilis 25 Y FAC Prevalence Index Worksheet 2.Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Glyceria elata 15 Y FACW 2.Equisetum telmateia 10 Y FACW Prevalence Index = B / A = 3.Impatiens sp.5 N FACW 4.Grass sp.5 N FAC*Hydrophytic Vegetation Indicators 5.X Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. 35 = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1. 2. = Total Cover % Bare Ground in Herb Stratum 50 Remarks:*Presumed FAC 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-2 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling Point – DP-2 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-10 10 YR 3/1 95 10 YR 4/4 5 CS M Sandy loam 10-12 10 Y 5/1 47.5 10 YR 4/4 2.5 CS M Sand with cobbles Mixed matrix 10 YR 3//1 47.5 10 YR 4/4 2.5 CS M Sand with cobbles Mixed matrix 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): Water Table Present? Yes No Depth (in): 8” BGS Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): To surface 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-3 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Bench Slope (%)<5 Local relief (concave, convex, none)None Subregion (LRR)A Lat Long Datum Soil Map Unit Name AgD –Alderwood gravelly sandy loam (15-30%)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Wetland C in-pit; bench next to stream A VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Number of Dominant Species that are OBL, FACW, or FAC:3 (A)2. 3.Total Number of Dominant Species Across All Strata:4 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:75 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Salix sitchensis 5 Y FACW Prevalence Index Worksheet 2.Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Phalaris arundinacea 80 Y FACW 2.Solanum dulcamara 50 Y FAC Prevalence Index = B / A = 3. 4.Hydrophytic Vegetation Indicators 5.X Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1.Rubus armeniacus 45 Y FAC 2. = Total Cover % Bare Ground in Herb Stratum Remarks: 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-3 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling Point – DP-3 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-9 10 YR 3/2 100 Sandy loam 9-12 2.5 Y 4/2 85 7.5 YR 3/4 15 C PL, M Loamy sand 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): Water Table Present? Yes No Depth (in): 11”BGS Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): To surface 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-4 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Bench Slope (%)<5 Local relief (concave, convex, none)None Subregion (LRR)A Lat Long Datum Soil Map Unit Name AgD –Alderwood gravelly sandy loam (15-30%)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Wetland D in-pit; bench next to stream A VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Alnus rubrra 100 Y FAC Number of Dominant Species that are OBL, FACW, or FAC:3 (A)2. 3.Total Number of Dominant Species Across All Strata:3 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:100 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Prevalence Index Worksheet 2.Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Phalaris arundinacea 75 Y FACW 2.Equisetum telmateia 15 Y FACW Prevalence Index = B / A = 3. 4.Hydrophytic Vegetation Indicators 5.X Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1.Rubus armeniacus 3 N FACU 2. = Total Cover % Bare Ground in Herb Stratum Remarks: 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-4 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling Point – DP-4 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-8 10 YR 3/2 100 Sandy loam 8-16 10 YR 4/1 80 7.5 YR 4/6 20 C PL, M Sandy clay loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): Water Table Present? Yes No Depth (in): Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): 10” BGS 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-5 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Hillslope Slope (%)5-10 Local relief (concave, convex, none)None Subregion (LRR)A Lat Long Datum Soil Map Unit Name AgD –Alderwood gravelly sandy loam (15-30%)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Bench with many alders growing (old road bed?) near stream A VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Acer macrophyllum (rooted out)Number of Dominant Species that are OBL, FACW, or FAC:3 (A)2. 3.Total Number of Dominant Species Across All Strata:3 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:100 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Crataegus monogyna 30 Y FAC Prevalence Index Worksheet 2.Alnus rubra 10 Y FAC Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Phalaris arundinacea 80 Y FACW 2.Equisetum telmateia 20 N FACW Prevalence Index = B / A = 3.Ranunculus repens 15 N FAC 4.Hydrophytic Vegetation Indicators 5.Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1. 2. = Total Cover % Bare Ground in Herb Stratum Remarks: 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-5 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling Point – DP-5 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-8 10 YR 3/2 100 Gravelly sandy loam 8-12 10 YR 4/2 100 Gravelly sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): Water Table Present? Yes No Depth (in): Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Damp, not saturated to 12” BGS 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-6 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Hilllslope Slope (%)~5 Local relief (concave, convex, none)None Subregion (LRR)A Lat Long Datum Soil Map Unit Name AgD –Alderwood gravelly sandy loam (15-30%)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Seep nearby appears to have been exposed when access road/trail was constructed. Soil is very compact below 6”. Vegetation becomes sparse in road bed.Road bed/trail muddy.Wetland F in-pit. VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Acer macrophyllum (rooted out)Number of Dominant Species that are OBL, FACW, or FAC:2 (A)2. 3.Total Number of Dominant Species Across All Strata:3 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:66 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Prevalence Index Worksheet 2.Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Ranunculus repens 20 Y FAC 2.Tolmiea menziesii 15 Y FAC Prevalence Index = B / A = 3.Tellima grandiflora 15 Y FACU 4.Athyrium filix-femina 5 N FAC Hydrophytic Vegetation Indicators 5.Grass sp.5 N FAC*X Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1. 2. = Total Cover % Bare Ground in Herb Stratum Remarks:*Presumed FAC 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-6 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling Point – DP-6 Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-6 10 YR 4/1 85 5 YR 4/6 15 C PL, M Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: Compact gravel / road fill below 6” HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): Water Table Present? Yes No Depth (in): Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): 0-6” BGS Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water (from seep) nearby 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:Thunder Hills Sewer Sampling Date:4/29/2014 Applicant/Owner:City of Renton Sampling Point:DP-7 Investigator:M. Foster, K. Crandall City/County:Renton Sect., Township, Range S 17 T 23N R 05E State:WA Landform (hillslope, terrace, etc)Depression Slope (%)<5 Local relief (concave, convex, none)Concave Subregion (LRR)A Lat Long Datum Soil Map Unit Name AkF –Alderwood and Kitsap soils (very steep)NWI classification N/A Are climatic/hydrologic conditions on the site typical for this time of year?Yes No (If no, explain in remarks.) Are “Normal Circumstances” present on the site?Yes No (If needed, explain any answers in Remarks.) Are Vegetation , Soil, , or Hydrology significantly disturbed? Are Vegetation , Soil, , or Hydrology naturally problematic? SUMMARY OF FINDINGS –Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present?Yes No Is this Sampling Point within a Wetland?Yes NoHydric Soils Present?Yes No Wetland Hydrology Present? Yes No Remarks:Disturbed wetland; unable to assess soils. Determined to be wetland based on amount to surface water at the time of the site visit and presence of multiple obligate plant species. VEGETATION –Use scientific names of plants. Tree Stratum (Plot size 5m diam. )Absolute % Cover Dominant Species? Indicator Status Dominance Test Worksheet 1.Number of Dominant Species that are OBL, FACW, or FAC:3 (A)2. 3.Total Number of Dominant Species Across All Strata:3 (B)4. = Total Cover Percent of Dominant Species that are OBL, FACW, or FAC:100 (A/B) Sapling/Shrub Stratum (Plot size 3m diam. ) 1.Prevalence Index Worksheet 2.Total % Cover of Multiply by 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 1m diam. )Column totals (A)(B) 1.Phalaris arundinacea 80 Y FACW 2.Veronica americana 50 Y OBL Prevalence Index = B / A = 3.Scirpus microcarpus 10 N OBL 4.Grass sp 5 N FAC*Hydrophytic Vegetation Indicators 5.X Dominance test is > 50% 6.Prevalence test is ≤3.0 * 7.Morphological Adaptations * (provide supporting 8.data in remarks or on a separate sheet) 9.Wetland Non-Vascular Plants * 10.Problematic Hydrophytic Vegetation * (explain) 11. = Total Cover * Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic Woody Vine Stratum (Plot size ) Hydrophytic Vegetation Present? Yes No 1. 2. = Total Cover % Bare Ground in Herb Stratum Remarks:*Presumed FAC 750 Sixth Street South Kirkland, Washington 98033 (425) 822-5242 watershedco.comDP-7 US Army Corps of Engineers Western Mountains, Valleys, and Coast – Interim Version SOIL Sampling 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) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains 2Loc: PL=Pore Lining, M=Matrix Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3 Histosol (A1) 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 (A11) Depleted Matrix (F3) Thick Dark Surface (A12) Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic Sandy Mucky Mineral (S1) Depleted Dark Surface (F7) Sandy Gleyed Matrix (S4) Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Type: ________________________________________ Yes No Depth (inches): _____________________________________ Remarks: Unable to dig because of disturbance; substrate is large quarry spall HYDROLOGY Wetland 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 (B8) Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) High Water Table (A2) Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) Drainage Patterns (B10) Saturation (A3) Salt Crust (B11) Dry-Season Water Table (C2) Water Marks (B1) Aquatic Invertebrates (B13) Saturation Visible on Aerial Imagery (C9) Sediment Deposits (B2) Hydrogen Sulfide Odor (C1) Geomorphic Position (D2) Drift Deposits (B3) Oxidized Rhizospheres along Living Roots (C3) Shallow Aquitard (D3) Algal Mat or Crust (B4) Presence of Reduced Iron (C4) FAC-Neutral Test (D5) Iron Deposits (B5) Recent Iron Reduction in Tilled Soils (C6) Raised Ant Mounds (D6) (LRR A) Surface Soil Cracks (B6) Stunted or Stressed Plants (D1) (LRR A) Frost-Heave Hummocks Inundation Visible on Aerial Imagery (B7) Other (explain in remarks) Field Observations Wetland Hydrology Present? Surface Water Present? Yes No Depth (in): ~7” ABS Water Table Present? Yes No Depth (in): Yes No Saturation Present? (includes capillary fringe) Yes No Depth (in): Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Stagnant water with algal growth; water appears to infiltrate somewhat and is discharged near the culvert to the south. The Watershed Company Month 2008 Appendix C - I A PPENDIX C Wetland Rating Forms Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1 RATING SUMMARY – Western Washington Name of wetland (or ID #): Wetland A Date of site visit: 7/2/2015 Rated by: K. Crandall, H. Mortensen Trained by Ecology? ☒Y ☐N Date of training: 09/2014 HGM Class used for rating: Depressional Wetland has multiple HGM classes? ☒Y ☐N NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: City of Renton’s Online Mapping Application (COR Maps) OVERALL WETLAND CATEGORY (based on functions ☒ or special characteristics ☐) 1. Category of wetland based on FUNCTIONS ☐ Category I – Total score = 23 - 27 ☐ Category II – Total score = 20 - 22 ☒ Category III – Total score = 16 - 19 ☐ Category IV – Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Circle the appropriate ratings Site Potential H M L H M L H M L Landscape Potential H M L H M L H M L Value H M L H M L H M L TOTAL Score Based on Ratings 6 7 4 17 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above ☒ Score for each function based on three ratings (order of ratings is not important) 9 = H,H,H 8 = H,H,M 7 = H,H,L 7 = H,M,M 6 = H,M,L 6 = M,M,M 5 = H,L,L 5 = M,M,L 4 = M,L,L 3 = L,L,L Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2 Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 A1 Hydroperiods D 1.4, H 1.2 A2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 A2 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 A1 Map of the contributing basin D 4.3, D 5.3 A3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 A4 Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to figure above) S 4.1 Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3 HGM Classification of Wetlands in Western Washington 1. Are the water levels in the entire unit usually controlled by tides except during floods? ☒NO – go to 2 ☐YES – the wetland class is Tidal Fringe – go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO – Saltwater Tidal Fringe (Estuarine) YES – Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ☒NO – go to 3 ☐YES – The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ☐The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ☐At least 30% of the open water area is deeper than 6.6 ft (2 m). ☒NO – go to 4 ☐YES – The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ☒The wetland is on a slope (slope can be very gradual), ☒The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ☐The water leaves the wetland without being impounded. ☒NO – go to 5 ☐YES – The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ☐The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ☐The overbank flooding occurs at least once every 2 years. For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4 ☒NO – go to 6 ☐YES – The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. ☒NO – go to 7 ☐YES – The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. ☒NO – go to 8 ☐YES – The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit being rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 5 DEPRESSIONAL AND FLATS WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality D 1.0. Does the site have the potential to improve water quality? D 1.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet). points = 3 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet. points = 2 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1 2 D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions).Yes = 4 No = 0 0 D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes): Wetland has persistent, ungrazed, plants > 95% of area points = 5 Wetland has persistent, ungrazed, plants > 1/2 of area points = 3 Wetland has persistent, ungrazed plants > 1/10 of area points = 1 Wetland has persistent, ungrazed plants < 1/10 of area points = 0 5 D 1.4. Characteristics of seasonal ponding or inundation: This is the area that is ponded for at least 2 months. See description in manual. Area seasonally ponded is > ½ total area of wetland points = 4 Area seasonally ponded is > ¼ total area of wetland points = 2 Area seasonally ponded is < ¼ total area of wetland points = 0 0 Total for D 1 Add the points in the boxes above 7 Rating of Site Potential If score is: ☐12-16 = H ☒6-11 = M ☐0-5 = L Record the rating on the first page D 2.0. Does the landscape have the potential to support the water quality function of the site? D 2.1. Does the wetland unit receive stormwater discharges? Yes = 1 No = 0 1 D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 1 D 2.3. Are there septic systems within 250 ft of the wetland? Yes = 1 No = 0 0 D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2.3? Source Yes = 1 No = 0 0 Total for D 2 Add the points in the boxes above 2 Rating of Landscape Potential If score is: ☐3 or 4 = H ☒1 or 2 = M ☐0 = L Record the rating on the first page D 3.0. Is the water quality improvement provided by the site valuable to society? D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list? Yes = 1 No = 0 0 D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0 1 D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES if there is a TMDL for the basin in which the unit is found)? Yes = 2 No = 0 0 Total for D 3 Add the points in the boxes above 1 Rating of Value If score is: ☐2-4 = H ☒1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 6 DEPRESSIONAL AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation D 4.0. Does the site have the potential to reduce flooding and erosion? D 4.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoints = 2 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0 2 D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry, the deepest part. Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 The wetland is a “headwater” wetland points = 3 Wetland is flat but has small depressions on the surface that trap water points = 1 Marks of ponding less than 0.5 ft (6 in) points = 0 3 D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of the unit points = 5 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire wetland is in the Flats class points = 5 0 Total for D 4 Add the points in the boxes above 5 Rating of Site Potential If score is: ☐12-16 = H ☐6-11 = M ☒0-5 = L Record the rating on the first page D 5.0. Does the landscape have the potential to support hydrologic functions of the site? D 5.1. Does the wetland receive stormwater discharges? Yes = 1 No = 0 1 D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 No = 0 1 D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at >1 residence/ac, urban, commercial, agriculture, etc.)? Yes = 1 No = 0 1 Total for D 5 Add the points in the boxes above 3 Rating of Landscape Potential If score is: ☒3 = H ☐1 or 2 = M ☐0 = L Record the rating on the first page D 6.0. Are the hydrologic functions provided by the site valuable to society? D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best matches conditions around the wetland unit being rated. Do not add points. Choose the highest score if more than one condition is met. The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has damaged human or natural resources (e.g., houses or salmon redds): • Flooding occurs in a sub-basin that is immediately down-gradient of unit. points = 2 • Surface flooding problems are in a sub-basin farther down-gradient. points = 1 Flooding from groundwater is an issue in the sub-basin. points = 1 The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why points = 0 There are no problems with flooding downstream of the wetland. points = 0 2 D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes = 2 No = 0 0 Total for D 6 Add the points in the boxes above 2 Rating of Value If score is: ☒2-4 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 7 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - I n d i c a t o r s t h a t s i t e f u n c t i o n s t o p r o v i d e i m p o r t a n t h a b i t a t H 1 . 0 . D o e s t h e s i t e h a v e t h e p o t e n t i a l t o p r o v i d e h a b i t a t ? H 1 . 1 . S t r u c t u r e o f p l a n t c o m m u n i t y : Indicators are Cowardin classes and strata within the Forested class. C h e c k t h e C o w a r d i n p l a n t c l a s s e s i n t h e w e t l a n d. Up to 10 patches may be combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ☐ A q u a t i c b e d 4 s t r u c t u r e s o r m o r e : p o i n t s = 4 ☐ E m e r g e n t 3 s t r u c t u r e s : p o i n t s = 2 ☐ S c r u b-s h r u b ( a r e a s w h e r e s h r u b s h a v e > 3 0 % c o v e r ) 2 s t r u c t u r e s : p o i n t s = 1 ☒ F o r e s t e d ( a r e a s w h e r e t r e e s h a v e > 3 0 % c o v e r ) 1 s t r u c t u r e : p o i n t s = 0 If the unit has a Forested class, check if: ☒ T h e F o r e s t e d c l a s s h a s 3 o u t o f 5 s t r a t a ( c a n o p y , s u b-c a n o p y , s h r u b s , h e r b a c e o u s , m o s s / g r o u n d-c o v e r ) t h a t e a c h c o v e r 2 0 % w i t h i n t h e F o r e s t e d p o l y g o n 1 H 1 . 2 . H y d r o p e r i o d s C h e c k t h e t y p e s o f w a t e r r e g i m e s ( h y d r o p e r i o d s ) p r e s e n t w i t h i n t h e w e t l a n d . T h e w a t e r r e g i m e h a s t o c o v e r m o r e t h a n 1 0 % o f t h e w e t l a n d o r ¼ a c t o c o u n t (see text for descriptions of hydroperiods) . ☒ P e r m a n e n t l y f l o o d e d o r i n u n d a t e d 4 o r m o r e t y p e s p r e s e n t : p o i n t s = 3 ☐ S e a s o n a l l y f l o o d e d o r i n u n d a t e d 3 t y p e s p r e s e n t : p o i n t s = 2 ☐ O c c a s i o n a l l y f l o o d e d o r i n u n d a t e d 2 t y p e s p r e s e n t : p o i n t s = 1 ☒ S a t u r a t e d o n l y 1 t y p e p r e s e n t : p o i n t s = 0 ☐ P e r m a n e n t l y f l o w i n g s t r e a m o r r i v e r i n , o r a d j a c e n t t o , t h e w e t l a n d ☒ S e a s o n a l l y f l o w i n g s t r e a m i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ Lake Fringe wetland 2 points ☐ Freshwater tidal wetland 2 points 2 H 1 . 3 . R i c h n e s s o f p l a n t s p e c i e s C o u n t t h e n u m b e r o f p l a n t s p e c i e s i n t h e w e t l a n d t h a t c o v e r a t l e a s t 1 0 f t 2 . Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle I f y o u c o u n t e d : > 1 9 s p e c i e s p o i n t s = 2 5 - 1 9 s p e c i e s p o i n t s = 1 < 5 s p e c i e s p o i n t s = 0 1 H 1 . 4 . I n t e r s p e r s i o n o f h a b i t a t s D e c i d e f r o m t h e d i a g r a m s b e l o w w h e t h e r i n t e r s p e r s i o n a m o n g C o w a r d i n p l a n t s c l a s s e s ( d e s c r i b e d i n H 1 . 1 ) , o r t h e c l a s s e s a n d u n v e g e t a t e d a r e a s ( c a n i n c l u d e o p e n w a t e r o r m u d f l a t s ) i s h i g h , m o d e r a t e , l o w , o r n o n e . If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 p o i n t s Low = 1 p o i n t Moderate = 2 p o i n t s A l l t h r e e d i a g r a m s i n t h i s r o w a r e HIGH = 3 p o i n t s 0 Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 8 H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ☒ Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ☐ Standing snags (dbh > 4 in) within the wetland ☒ Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) ☐ Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ☐ At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ☐ Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) 2 Total for H 1 Add the points in the boxes above 6 Rating of Site Potential If score is: ☐15-18 = H ☐7-14 = M ☒0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: % undisturbed habitat: 0 + [(6% moderate and low intensity land uses)/2]: 3 = 3% If total accessible habitat is: > 1/3 (33.3%) of 1 km Polygon points = 3 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat: 2 + [(22% moderate and low intensity land uses)/2]: 11 = 13% Undisturbed habitat > 50% of Polygon points = 3 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 1 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) ≤ 50% of 1 km Polygon is high intensity points = 0 -2 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: ☐4-6 = H ☐1-3 = M ☒< 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ☐ It has 3 or more priority habitats within 100 m (see next page) ☐ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ☐ It is mapped as a location for an individual WDFW priority species ☐ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ☐ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 1 Rating of Value If score is: ☐2 = H ☒1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 9 WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ☐ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ☐ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ☐ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ☐ Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ☐ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see web link above). ☒ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ☐ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above). ☒ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ☐ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report – see web link on previous page). ☐ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ☐ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ☐ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ☐ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 10 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. Category SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ☐ The dominant water regime is tidal, ☐ Vegetated, and ☐ With a salinity greater than 0.5 ppt ☐Yes –Go to SC 1.1 ☒No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? ☐Yes = Category I ☐No - Go to SC 1.2 Cat. I SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. ☐Yes = Category I ☐No= Category II Cat. I Cat. II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? ☐Yes – Go to SC 2.2 ☒No – Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? ☐Yes = Category I ☒No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf ☐Yes – Contact WNHP/WDNR and go to SC 2.4 ☒No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? ☐Yes = Category I ☐No = Not a WHCV Cat. I SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? ☐Yes – Go to SC 3.3 ☒No – Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? ☐Yes – Go to SC 3.3 ☒No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ☐Yes = Is a Category I bog ☒No – Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? ☐Yes = Is a Category I bog ☒No = Is not a bog Cat. I Wetland name or number: Wetland A Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11 SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ☐ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ☐ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). ☐Yes = Category I ☒No = Not a forested wetland for this section Cat. I SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ☐ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ☐ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) ☐Yes – Go to SC 5.1 ☒No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland is larger than 1/10 ac (4350 ft2) ☐Yes = Category I ☐No = Category II Cat. I Cat. II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ☐ Long Beach Peninsula: Lands west of SR 103 ☐ Grayland-Westport: Lands west of SR 105 ☐ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 ☐Yes – Go to SC 6.1 ☒No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? ☐Yes = Category I ☐No – Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? ☐Yes = Category II ☐No – Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? ☐Yes = Category III ☐No = Category IV Cat I Cat. II Cat. III Cat. IV Category of wetland based on Special Characteristics If you answered No for all types, enter “Not Applicable” on Summary Form NA Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 12 Wetland name or number This page left blank intentionally Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1 RATING SUMMARY – Western Washington Name of wetland (or ID #): Wetland B Date of site visit: 7/2/2015 Rated by: K. Crandall, H. Mortensen Trained by Ecology? ☒Y ☐N Date of training: 09/2014 HGM Class used for rating: Riverine Wetland has multiple HGM classes? ☐Y ☒N NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: City of Renton’s Online Mapping Application (COR Maps) OVERALL WETLAND CATEGORY (based on functions ☒ or special characteristics ☐) 1. Category of wetland based on FUNCTIONS ☐ Category I – Total score = 23 - 27 ☐ Category II – Total score = 20 - 22 ☒ Category III – Total score = 16 - 19 ☐ Category IV – Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Circle the appropriate ratings Site Potential H M L H M L H M L Landscape Potential H M L H M L H M L Value H M L H M L H M L TOTAL Score Based on Ratings 6 7 6 19 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above ☒ Score for each function based on three ratings (order of ratings is not important) 9 = H,H,H 8 = H,H,M 7 = H,H,L 7 = H,M,M 6 = H,M,L 6 = M,M,M 5 = H,L,L 5 = M,M,L 4 = M,L,L 3 = L,L,L Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2 Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 B1 Hydroperiods H 1.2 B2 Ponded depressions R 1.1 B2 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 B1 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 B1 Width of unit vs. width of stream (can be added to another figure) R 4.1 B2 Map of the contributing basin R 2.2, R 2.3, R 5.2 B3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 B4 Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 2 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to figure above) S 4.1 Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3 HGM Classification of Wetlands in Western Washington 1. Are the water levels in the entire unit usually controlled by tides except during floods? ☒NO – go to 2 ☐YES – the wetland class is Tidal Fringe – go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO – Saltwater Tidal Fringe (Estuarine) YES – Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ☒NO – go to 3 ☐YES – The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ☐The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ☐At least 30% of the open water area is deeper than 6.6 ft (2 m). ☒NO – go to 4 ☐YES – The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ☐The wetland is on a slope (slope can be very gradual), ☐The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ☐The water leaves the wetland without being impounded. ☒NO – go to 5 ☐YES – The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ☒The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ☒The overbank flooding occurs at least once every 2 years. For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4 ☐NO – go to 6 ☒YES – The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. ☐NO – go to 7 ☐YES – The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. ☐NO – go to 8 ☐YES – The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit being rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 5 RIVERINE AND FRESHWATER TIDAL FRINGE WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality R 1.0. Does the site have the potential to improve water quality? R 1.1. Area of surface depressions within the Riverine wetland that can trap sediments during a flooding event: Depressions cover > 3/4 area of wetland points = 8 4 Depressions cover > 1/2 area of wetland points = 4 Depressions present but cover < 1/2 area of wetland points = 2 No depressions present points = 0 0 R 1.2. Structure of plants in the wetland (areas with >90% cover at person height, not Cowardin classes) Trees or shrubs > 2/3 area of the wetland points = 8 Trees or shrubs > 1/3 area of the wetland points = 6 Herbaceous plants (> 6 in high) > 2/3 area of the wetland points = 6 Herbaceous plants (> 6 in high) > 1/3 area of the wetland points = 3 Trees, shrubs, and ungrazed herbaceous < 1/3 area of the wetland points = 0 8 Total for R 1 Add the points in the boxes above 8 Rating of Site Potential If score is: ☐12-16 = H ☒6-11 = M ☐0-5 = L Record the rating on the first page R 2.0. Does the landscape have the potential to support the water quality function of the site? R 2.1. Is the wetland within an incorporated city or within its UGA? Yes = 2 No = 0 2 R 2.2. Does the contributing basin to the wetland include a UGA or incorporated area? Yes = 1 No = 0 1 R 2.3. Does at least 10% of the contributing basin contain tilled fields, pastures, or forests that have been clearcut within the last 5 years? Yes = 1 No = 0 0 R 2.4. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 0 R 2.5. Are there other sources of pollutants coming into the wetland that are not listed in questions R 2.1-R 2.4 Other sources Yes = 1 No = 0 0 Total for R 2 Add the points in the boxes above 3 Rating of Landscape Potential If score is: ☒3-6 = H ☐1 or 2 = M ☐0 = L Record the rating on the first page R 3.0. Is the water quality improvement provided by the site valuable to society? R 3.1. Is the wetland along a stream or river that is on the 303(d) list or on a tributary that drains to one within 1 mi? Yes = 1 No = 0 0 R 3.2. Is the wetland along a stream or river that has TMDL limits for nutrients, toxics, or pathogens? Yes = 1 No = 0 0 R 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality? (answer YES if there is a TMDL for the drainage in which the unit is found) Yes = 2 No = 0 0 Total for R 3 Add the points in the boxes above 0 Rating of Value If score is: ☐2-4 = H ☐1 = M ☒0 = L Record the rating on the first page Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 6 RIVERINE AND FRESHWATER TIDAL FRINGE WETLANDS Hydrologic Functions - Indicators that site functions to reduce flooding and stream erosion R 4.0. Does the site have the potential to reduce flooding and erosion? R 4.1. Characteristics of the overbank storage the wetland provides: Estimate the average width of the wetland perpendicular to the direction of the flow and the width of the stream or river channel (distance between banks). Calculate the ratio: (average width of wetland)/(average width of stream between banks). If the ratio is more than 20 points = 9 If the ratio is 10-20 points = 6 If the ratio is 5-<10 points = 4 If the ratio is 1-<5 points = 2 If the ratio is < 1 points = 1 2 R 4.2. Characteristics of plants that slow down water velocities during floods: Treat large woody debris as forest or shrub. Choose the points appropriate for the best description (polygons need to have >90% cover at person height. These are NOT Cowardin classes). Forest or shrub for > 1/3 area OR emergent plants > 2/3 area points = 7 Forest or shrub for > 1/10 area OR emergent plants > 1/3 area points = 4 Plants do not meet above criteria points = 0 7 Total for R 4 Add the points in the boxes above 9 Rating of Site Potential If score is: ☐12-16 = H ☒6-11 = M ☐0-5 = L Record the rating on the first page R 5.0. Does the landscape have the potential to support the hydrologic functions of the site? R 5.1. Is the stream or river adjacent to the wetland downcut? Yes = 0 No = 1 0 R 5.2. Does the up-gradient watershed include a UGA or incorporated area? Yes = 1 No = 0 1 R 5.3. Is the up-gradient stream or river controlled by dams? Yes = 0 No = 1 1 Total for R 5 Add the points in the boxes above 2 Rating of Landscape Potential If score is: ☐3 = H ☒1 or 2 = M ☐0 = L Record the rating on the first page R 6.0. Are the hydrologic functions provided by the site valuable to society? R 6.1. Distance to the nearest areas downstream that have flooding problems? Choose the description that best fits the site. The sub-basin immediately down-gradient of the wetland has flooding problems that result in damage to human or natural resources (e.g., houses or salmon redds) points = 2 Surface flooding problems are in a sub-basin farther down-gradient points = 1 No flooding problems anywhere downstream points = 0 2 R 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes = 2 No = 0 0 Total for R 6 Add the points in the boxes above 2 Rating of Value If score is: ☒2-4 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 7 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - I n d i c a t o r s t h a t s i t e f u n c t i o n s t o p r o v i d e i m p o r t a n t h a b i t a t H 1 . 0 . D o e s t h e s i t e h a v e t h e p o t e n t i a l t o p r o v i d e h a b i t a t ? H 1 . 1 . S t r u c t u r e o f p l a n t c o m m u n i t y : Indicators are Cowardin classes and strata within the Forested class. C h e c k t h e C o w a r d i n p l a n t c l a s s e s i n t h e w e t l a n d. Up to 10 patches may be combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ☐ A q u a t i c b e d 4 s t r u c t u r e s o r m o r e : p o i n t s = 4 ☒ E m e r g e n t 3 s t r u c t u r e s : p o i n t s = 2 ☐ S c r u b-s h r u b ( a r e a s w h e r e s h r u b s h a v e > 3 0 % c o v e r ) 2 s t r u c t u r e s : p o i n t s = 1 ☒ F o r e s t e d ( a r e a s w h e r e t r e e s h a v e > 3 0 % c o v e r ) 1 s t r u c t u r e : p o i n t s = 0 If the unit has a Forested class, check if: ☒ T h e F o r e s t e d c l a s s h a s 3 o u t o f 5 s t r a t a ( c a n o p y , s u b-c a n o p y , s h r u b s , h e r b a c e o u s , m o s s / g r o u n d-c o v e r ) t h a t e a c h c o v e r 2 0 % w i t h i n t h e F o r e s t e d p o l y g o n 2 H 1 . 2 . H y d r o p e r i o d s C h e c k t h e t y p e s o f w a t e r r e g i m e s ( h y d r o p e r i o d s ) p r e s e n t w i t h i n t h e w e t l a n d . T h e w a t e r r e g i m e h a s t o c o v e r m o r e t h a n 1 0 % o f t h e w e t l a n d o r ¼ a c t o c o u n t (see text for descriptions of hydroperiods) . ☐ P e r m a n e n t l y f l o o d e d o r i n u n d a t e d 4 o r m o r e t y p e s p r e s e n t : p o i n t s = 3 ☐ S e a s o n a l l y f l o o d e d o r i n u n d a t e d 3 t y p e s p r e s e n t : p o i n t s = 2 ☒ O c c a s i o n a l l y f l o o d e d o r i n u n d a t e d 2 t y p e s p r e s e n t : p o i n t s = 1 ☐ S a t u r a t e d o n l y 1 t y p e p r e s e n t : p o i n t s = 0 ☒ P e r m a n e n t l y f l o w i n g s t r e a m o r r i v e r i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ S e a s o n a l l y f l o w i n g s t r e a m i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ Lake Fringe wetland 2 points ☐ Freshwater tidal wetland 2 points 1 H 1 . 3 . R i c h n e s s o f p l a n t s p e c i e s C o u n t t h e n u m b e r o f p l a n t s p e c i e s i n t h e w e t l a n d t h a t c o v e r a t l e a s t 1 0 f t 2 . Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle I f y o u c o u n t e d : > 1 9 s p e c i e s p o i n t s = 2 5 - 1 9 s p e c i e s p o i n t s = 1 < 5 s p e c i e s p o i n t s = 0 1 H 1 . 4 . I n t e r s p e r s i o n o f h a b i t a t s D e c i d e f r o m t h e d i a g r a m s b e l o w w h e t h e r i n t e r s p e r s i o n a m o n g C o w a r d i n p l a n t s c l a s s e s ( d e s c r i b e d i n H 1 . 1 ) , o r t h e c l a s s e s a n d u n v e g e t a t e d a r e a s ( c a n i n c l u d e o p e n w a t e r o r m u d f l a t s ) i s h i g h , m o d e r a t e , l o w , o r n o n e . If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 p o i n t s Low = 1 p o i n t Moderate = 2 p o i n t s A l l t h r e e d i a g r a m s i n t h i s r o w a r e HIGH = 3 p o i n t s 2 Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 8 H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ☒ Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ☐ Standing snags (dbh > 4 in) within the wetland ☒ Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) ☐ Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ☐ At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ☐ Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) 2 Total for H 1 Add the points in the boxes above 8 Rating of Site Potential If score is: ☐15-18 = H ☒7-14 = M ☐0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: % undisturbed habitat: 0 + [(6% moderate and low intensity land uses)/2]: 3= 3% If total accessible habitat is: > 1/3 (33.3%) of 1 km Polygon points = 3 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat: 1 + [(28% moderate and low intensity land uses)/2]: 14 = 15% Undisturbed habitat > 50% of Polygon points = 3 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 1 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) ≤ 50% of 1 km Polygon is high intensity points = 0 -2 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: ☐4-6 = H ☐1-3 = M ☒< 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ☒ It has 3 or more priority habitats within 100 m (see next page) ☐ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ☐ It is mapped as a location for an individual WDFW priority species ☐ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ☐ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 2 Rating of Value If score is: ☒2 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 9 WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ☐ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ☐ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ☐ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ☐ Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ☐ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see web link above). ☒ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ☐ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above). ☒ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ☐ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report – see web link on previous page). ☐ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ☐ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ☐ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ☒ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 10 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. Category SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ☐ The dominant water regime is tidal, ☐ Vegetated, and ☐ With a salinity greater than 0.5 ppt ☐Yes –Go to SC 1.1 ☒No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? ☐Yes = Category I ☐No - Go to SC 1.2 Cat. I SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. ☐Yes = Category I ☐No= Category II Cat. I Cat. II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? ☐Yes – Go to SC 2.2 ☒No – Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? ☐Yes = Category I ☒No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf ☐Yes – Contact WNHP/WDNR and go to SC 2.4 ☒No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? ☐Yes = Category I ☐No = Not a WHCV Cat. I SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? ☐Yes – Go to SC 3.3 ☒No – Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? ☐Yes – Go to SC 3.3 ☒No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ☐Yes = Is a Category I bog ☒No – Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? ☐Yes = Is a Category I bog ☒No = Is not a bog Cat. I Wetland name or number: Wetland B Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11 SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ☐ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ☐ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). ☐Yes = Category I ☒No = Not a forested wetland for this section Cat. I SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ☐ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ☐ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) ☐Yes – Go to SC 5.1 ☒No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland is larger than 1/10 ac (4350 ft2) ☐Yes = Category I ☐No = Category II Cat. I Cat. II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ☐ Long Beach Peninsula: Lands west of SR 103 ☐ Grayland-Westport: Lands west of SR 105 ☐ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 ☐Yes – Go to SC 6.1 ☒No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? ☐Yes = Category I ☐No – Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? ☐Yes = Category II ☐No – Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? ☐Yes = Category III ☐No = Category IV Cat I Cat. II Cat. III Cat. IV Category of wetland based on Special Characteristics If you answered No for all types, enter “Not Applicable” on Summary Form NA Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 12 Wetland name or number This page left blank intentionally Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1 RATING SUMMARY – Western Washington Name of wetland (or ID #): Wetland C Date of site visit: 7/2/2015 Rated by: K. Crandall, H. Mortensen Trained by Ecology? ☒Y ☐N Date of training: 09/2014 HGM Class used for rating: Slope Wetland has multiple HGM classes? ☐Y ☒N NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: City of Renton Online Mapping Application (COR Maps) OVERALL WETLAND CATEGORY (based on functions ☒ or special characteristics ☐) 1. Category of wetland based on FUNCTIONS ☐ Category I – Total score = 23 - 27 ☐ Category II – Total score = 20 - 22 ☐ Category III – Total score = 16 - 19 ☒ Category IV – Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Circle the appropriate ratings Site Potential H M L H M L H M L Landscape Potential H M L H M L H M L Value H M L H M L H M L TOTAL Score Based on Ratings 4 5 5 14 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above ☒ Score for each function based on three ratings (order of ratings is not important) 9 = H,H,H 8 = H,H,M 7 = H,H,L 7 = H,M,M 6 = H,M,L 6 = M,M,M 5 = H,L,L 5 = M,M,L 4 = M,L,L 3 = L,L,L Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2 Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 C1 Hydroperiods H 1.2 C2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 C1 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to figure above) S 4.1 C1 Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 C1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 C3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 2 Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3 HGM Classification of Wetlands in Western Washington 1. Are the water levels in the entire unit usually controlled by tides except during floods? ☒NO – go to 2 ☐YES – the wetland class is Tidal Fringe – go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO – Saltwater Tidal Fringe (Estuarine) YES – Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ☒NO – go to 3 ☐YES – The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ☐The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ☐At least 30% of the open water area is deeper than 6.6 ft (2 m). ☒NO – go to 4 ☐YES – The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ☒The wetland is on a slope (slope can be very gradual), ☒The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ☒The water leaves the wetland without being impounded. ☐NO – go to 5 ☒YES – The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ☐The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ☐The overbank flooding occurs at least once every 2 years. For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4 ☐NO – go to 6 ☐YES – The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. ☐NO – go to 7 ☐YES – The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. ☐NO – go to 8 ☐YES – The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit being rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11 SLOPE WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality S 1.0. Does the site have the potential to improve water quality? S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in elevation for every 100 ft of horizontal distance) Slope is 1% or less points = 3 Slope is > 1%-2% points = 2 Slope is > 2%-5% points = 1 Slope is greater than 5% points = 0 1 S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions): Yes = 3 No = 0 0 S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants: Choose the points appropriate for the description that best fits the plants in the wetland. Dense means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or mowed and plants are higher than 6 in. Dense, uncut, herbaceous plants > 90% of the wetland area points = 6 Dense, uncut, herbaceous plants > ½ of area points = 3 Dense, woody, plants > ½ of area points = 2 Dense, uncut, herbaceous plants > ¼ of area points = 1 Does not meet any of the criteria above for plants points = 0 3 Total for S 1 Add the points in the boxes above 4 Rating of Site Potential If score is: ☐12 = H ☐6-11 = M ☒0-5 = L Record the rating on the first page S 2.0. Does the landscape have the potential to support the water quality function of the site? S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in land uses that generate pollutants? Yes = 1 No = 0 0 S 2.2. Are there other sources of pollutants coming into the wetland that are not listed in question S 2.1? Other sources Yes = 1 No = 0 0 Total for S 2 Add the points in the boxes above 0 Rating of Landscape Potential If score is: ☐1-2 = M ☒0 = L Record the rating on the first page S 3.0. Is the water quality improvement provided by the site valuable to society? S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list? Yes = 1 No = 0 0 S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue? At least one aquatic resource in the basin is on the 303(d) list. Yes = 1 No = 0 1 S 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality? Answer YES if there is a TMDL for the basin in which unit is found. Yes = 2 No = 0 0 Total for S 3 Add the points in the boxes above 1 Rating of Value If score is: ☐2-4 = H ☒1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 12 SLOPE WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosion S 4.0. Does the site have the potential to reduce flooding and stream erosion? S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose the points appropriate for the description that best fits conditions in the wetland. Stems of plants should be thick enough (usually >1/8 8 in), or dense enough, to remain erect during surface flows. Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1 All other conditions points = 0 0 Rating of Site Potential If score is: ☐1 = M ☒0 = L Record the rating on the first page S 5.0. Does the landscape have the potential to support the hydrologic functions of the site? S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land uses or cover that generate excess surface runoff? Yes = 1 No = 0 0 Rating of Landscape Potential If score is: ☐1 = M ☒0 = L Record the rating on the first page S 6.0. Are the hydrologic functions provided by the site valuable to society? S 6.1. Distance to the nearest areas downstream that have flooding problems: The sub-basin immediately down-gradient of site has flooding problems that result in damage to human or natural resources (e.g., houses or salmon redds) points = 2 Surface flooding problems are in a sub-basin farther down-gradient points = 1 No flooding problems anywhere downstream points = 0 2 S 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes = 2 No = 0 0 Total for S 6 Add the points in the boxes above 2 Rating of Value If score is: ☒2-4 = H ☐1 = M ☐0 = L Record the rating on the first page NOTES and FIELD OBSERVATIONS: S 6.1 – Observed flooding of Sam’s Club parking lot downstream of I-405 during field investigations. Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 13 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - I n d i c a t o r s t h a t s i t e f u n c t i o n s t o p r o v i d e i m p o r t a n t h a b i t a t H 1 . 0 . D o e s t h e s i t e h a v e t h e p o t e n t i a l t o p r o v i d e h a b i t a t ? H 1 . 1 . S t r u c t u r e o f p l a n t c o m m u n i t y : Indicators are Cowardin classes and strata within the Forested class. C h e c k t h e C o w a r d i n p l a n t c l a s s e s i n t h e w e t l a n d. Up to 10 patches may be combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ☐ A q u a t i c b e d 4 s t r u c t u r e s o r m o r e : p o i n t s = 4 ☒ E m e r g e n t 3 s t r u c t u r e s : p o i n t s = 2 ☒ S c r u b-s h r u b ( a r e a s w h e r e s h r u b s h a v e > 3 0 % c o v e r ) 2 s t r u c t u r e s : p o i n t s = 1 ☐ F o r e s t e d ( a r e a s w h e r e t r e e s h a v e > 3 0 % c o v e r ) 1 s t r u c t u r e : p o i n t s = 0 If the unit has a Forested class, check if: ☐ T h e F o r e s t e d c l a s s h a s 3 o u t o f 5 s t r a t a ( c a n o p y , s u b-c a n o p y , s h r u b s , h e r b a c e o u s , m o s s / g r o u n d-c o v e r ) t h a t e a c h c o v e r 2 0 % w i t h i n t h e F o r e s t e d p o l y g o n 1 H 1 . 2 . H y d r o p e r i o d s C h e c k t h e t y p e s o f w a t e r r e g i m e s ( h y d r o p e r i o d s ) p r e s e n t w i t h i n t h e w e t l a n d . T h e w a t e r r e g i m e h a s t o c o v e r m o r e t h a n 1 0 % o f t h e w e t l a n d o r ¼ a c t o c o u n t (see text for descriptions of hydroperiods) . ☐ P e r m a n e n t l y f l o o d e d o r i n u n d a t e d 4 o r m o r e t y p e s p r e s e n t : p o i n t s = 3 ☐ S e a s o n a l l y f l o o d e d o r i n u n d a t e d 3 t y p e s p r e s e n t : p o i n t s = 2 ☐ O c c a s i o n a l l y f l o o d e d o r i n u n d a t e d 2 t y p e s p r e s e n t : p o i n t s = 1 ☒ S a t u r a t e d o n l y 1 t y p e p r e s e n t : p o i n t s = 0 ☒ P e r m a n e n t l y f l o w i n g s t r e a m o r r i v e r i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ S e a s o n a l l y f l o w i n g s t r e a m i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ Lake Fringe wetland 2 points ☐ Freshwater tidal wetland 2 points 1 H 1 . 3 . R i c h n e s s o f p l a n t s p e c i e s C o u n t t h e n u m b e r o f p l a n t s p e c i e s i n t h e w e t l a n d t h a t c o v e r a t l e a s t 1 0 f t 2 . Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle I f y o u c o u n t e d : > 1 9 s p e c i e s p o i n t s = 2 5 - 1 9 s p e c i e s p o i n t s = 1 < 5 s p e c i e s p o i n t s = 0 0 H 1 . 4 . I n t e r s p e r s i o n o f h a b i t a t s D e c i d e f r o m t h e d i a g r a m s b e l o w w h e t h e r i n t e r s p e r s i o n a m o n g C o w a r d i n p l a n t s c l a s s e s ( d e s c r i b e d i n H 1 . 1 ) , o r t h e c l a s s e s a n d u n v e g e t a t e d a r e a s ( c a n i n c l u d e o p e n w a t e r o r m u d f l a t s ) i s h i g h , m o d e r a t e , l o w , o r n o n e . If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 p o i n t s Low = 1 p o i n t Moderate = 2 p o i n t s A l l t h r e e d i a g r a m s i n t h i s r o w a r e HIGH = 3 p o i n t s 2 Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 14 H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ☐ Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ☐ Standing snags (dbh > 4 in) within the wetland ☒ Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) ☐ Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ☐ At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ☐ Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) 1 Total for H 1 Add the points in the boxes above 5 Rating of Site Potential If score is: ☐15-18 = H ☐7-14 = M ☒0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: % undisturbed habitat: 0 + [(6% moderate and low intensity land uses)/2]: 3 = 3% If total accessible habitat is: > 1/3 (33.3%) of 1 km Polygon points = 3 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat: 1 + [(26% moderate and low intensity land uses)/2]: 13 =14% Undisturbed habitat > 50% of Polygon points = 3 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 1 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) ≤ 50% of 1 km Polygon is high intensity points = 0 -2 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: ☐4-6 = H ☐1-3 = M ☒< 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ☒ It has 3 or more priority habitats within 100 m (see next page) ☐ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ☐ It is mapped as a location for an individual WDFW priority species ☐ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ☐ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 2 Rating of Value If score is: ☒2 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 15 WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ☐ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ☐ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ☐ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ☐ Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ☐ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see web link above). ☒ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ☐ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above). ☒ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ☐ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report – see web link on previous page). ☐ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ☐ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ☐ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ☒ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 16 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. Category SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ☐ The dominant water regime is tidal, ☐ Vegetated, and ☐ With a salinity greater than 0.5 ppt ☐Yes –Go to SC 1.1 ☒No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? ☐Yes = Category I ☐No - Go to SC 1.2 Cat. I SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. ☐Yes = Category I ☐No= Category II Cat. I Cat. II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? ☐Yes – Go to SC 2.2 ☒No – Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? ☐Yes = Category I ☒No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf ☐Yes – Contact WNHP/WDNR and go to SC 2.4 ☒No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? ☐Yes = Category I ☐No = Not a WHCV Cat. I SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? ☐Yes – Go to SC 3.3 ☒No – Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? ☐Yes – Go to SC 3.3 ☒No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ☐Yes = Is a Category I bog ☐No – Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? ☐Yes = Is a Category I bog ☐No = Is not a bog Cat. I Wetland name or number: Wetland C Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 17 SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ☐ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ☐ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). ☐Yes = Category I ☒No = Not a forested wetland for this section Cat. I SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ☐ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ☐ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) ☐Yes – Go to SC 5.1 ☒No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland is larger than 1/10 ac (4350 ft2) ☐Yes = Category I ☐No = Category II Cat. I Cat. II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ☐ Long Beach Peninsula: Lands west of SR 103 ☐ Grayland-Westport: Lands west of SR 105 ☐ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 ☐Yes – Go to SC 6.1 ☒No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? ☐Yes = Category I ☐No – Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? ☐Yes = Category II ☐No – Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? ☐Yes = Category III ☐No = Category IV Cat I Cat. II Cat. III Cat. IV Category of wetland based on Special Characteristics If you answered No for all types, enter “Not Applicable” on Summary Form NA Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 18 Wetland name or number This page left blank intentionally Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1 RATING SUMMARY – Western Washington Name of wetland (or ID #): Wetland D Date of site visit: 7/2/2015 Rated by: K. Crandall, H. Mortensen Trained by Ecology? ☒Y ☐N Date of training: 09/2014 HGM Class used for rating: Riverine Wetland has multiple HGM classes? ☐Y ☒N NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: City of Renton Online Mapping Application (COR Maps) OVERALL WETLAND CATEGORY (based on functions ☒ or special characteristics ☐) 1. Category of wetland based on FUNCTIONS ☐ Category I – Total score = 23 - 27 ☐ Category II – Total score = 20 - 22 ☒ Category III – Total score = 16 - 19 ☐ Category IV – Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Circle the appropriate ratings Site Potential H M L H M L H M L Landscape Potential H M L H M L H M L Value H M L H M L H M L TOTAL Score Based on Ratings 6 7 5 18 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above ☒ Score for each function based on three ratings (order of ratings is not important) 9 = H,H,H 8 = H,H,M 7 = H,H,L 7 = H,M,M 6 = H,M,L 6 = M,M,M 5 = H,L,L 5 = M,M,L 4 = M,L,L 3 = L,L,L Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2 Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 D1 Hydroperiods H 1.2 D2 Ponded depressions R 1.1 D2 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 D1 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 D1 Width of unit vs. width of stream (can be added to another figure) R 4.1 D2 Map of the contributing basin R 2.2, R 2.3, R 5.2 D3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 D4 Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 2 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to figure above) S 4.1 Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3 HGM Classification of Wetlands in Western Washington 1. Are the water levels in the entire unit usually controlled by tides except during floods? ☒NO – go to 2 ☐YES – the wetland class is Tidal Fringe – go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO – Saltwater Tidal Fringe (Estuarine) YES – Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ☒NO – go to 3 ☐YES – The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ☐The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ☐At least 30% of the open water area is deeper than 6.6 ft (2 m). ☒NO – go to 4 ☐YES – The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ☐The wetland is on a slope (slope can be very gradual), ☐The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ☐The water leaves the wetland without being impounded. ☒NO – go to 5 ☐YES – The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ☒The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ☒The overbank flooding occurs at least once every 2 years. For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4 ☐NO – go to 6 ☒YES – The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. ☐NO – go to 7 ☐YES – The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. ☐NO – go to 8 ☐YES – The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit being rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 5 RIVERINE AND FRESHWATER TIDAL FRINGE WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality R 1.0. Does the site have the potential to improve water quality? R 1.1. Area of surface depressions within the Riverine wetland that can trap sediments during a flooding event: Depressions cover > 3/4 area of wetland points = 8 4 Depressions cover > 1/2 area of wetland points = 4 Depressions present but cover < 1/2 area of wetland points = 2 No depressions present points = 0 2 R 1.2. Structure of plants in the wetland (areas with >90% cover at person height, not Cowardin classes) Trees or shrubs > 2/3 area of the wetland points = 8 Trees or shrubs > 1/3 area of the wetland points = 6 Herbaceous plants (> 6 in high) > 2/3 area of the wetland points = 6 Herbaceous plants (> 6 in high) > 1/3 area of the wetland points = 3 Trees, shrubs, and ungrazed herbaceous < 1/3 area of the wetland points = 0 6 Total for R 1 Add the points in the boxes above 8 Rating of Site Potential If score is: ☐12-16 = H ☒6-11 = M ☐0-5 = L Record the rating on the first page R 2.0. Does the landscape have the potential to support the water quality function of the site? R 2.1. Is the wetland within an incorporated city or within its UGA? Yes = 2 No = 0 2 R 2.2. Does the contributing basin to the wetland include a UGA or incorporated area? Yes = 1 No = 0 1 R 2.3. Does at least 10% of the contributing basin contain tilled fields, pastures, or forests that have been clearcut within the last 5 years? Yes = 1 No = 0 0 R 2.4. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 1 R 2.5. Are there other sources of pollutants coming into the wetland that are not listed in questions R 2.1-R 2.4 Other sources Yes = 1 No = 0 0 Total for R 2 Add the points in the boxes above 4 Rating of Landscape Potential If score is: ☒3-6 = H ☐1 or 2 = M ☐0 = L Record the rating on the first page R 3.0. Is the water quality improvement provided by the site valuable to society? R 3.1. Is the wetland along a stream or river that is on the 303(d) list or on a tributary that drains to one within 1 mi? Yes = 1 No = 0 0 R 3.2. Is the wetland along a stream or river that has TMDL limits for nutrients, toxics, or pathogens? Yes = 1 No = 0 0 R 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality? (answer YES if there is a TMDL for the drainage in which the unit is found) Yes = 2 No = 0 0 Total for R 3 Add the points in the boxes above 0 Rating of Value If score is: ☐2-4 = H ☐1 = M ☒0 = L Record the rating on the first page Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 6 RIVERINE AND FRESHWATER TIDAL FRINGE WETLANDS Hydrologic Functions - Indicators that site functions to reduce flooding and stream erosion R 4.0. Does the site have the potential to reduce flooding and erosion? R 4.1. Characteristics of the overbank storage the wetland provides: Estimate the average width of the wetland perpendicular to the direction of the flow and the width of the stream or river channel (distance between banks). Calculate the ratio: (average width of wetland)/(average width of stream between banks). If the ratio is more than 20 points = 9 If the ratio is 10-20 points = 6 If the ratio is 5-<10 points = 4 If the ratio is 1-<5 points = 2 If the ratio is < 1 points = 1 2 R 4.2. Characteristics of plants that slow down water velocities during floods: Treat large woody debris as forest or shrub. Choose the points appropriate for the best description (polygons need to have >90% cover at person height. These are NOT Cowardin classes). Forest or shrub for > 1/3 area OR emergent plants > 2/3 area points = 7 Forest or shrub for > 1/10 area OR emergent plants > 1/3 area points = 4 Plants do not meet above criteria points = 0 7 Total for R 4 Add the points in the boxes above 9 Rating of Site Potential If score is: ☐12-16 = H ☒6-11 = M ☐0-5 = L Record the rating on the first page R 5.0. Does the landscape have the potential to support the hydrologic functions of the site? R 5.1. Is the stream or river adjacent to the wetland downcut? Yes = 0 No = 1 0 R 5.2. Does the up-gradient watershed include a UGA or incorporated area? Yes = 1 No = 0 1 R 5.3. Is the up-gradient stream or river controlled by dams? Yes = 0 No = 1 1 Total for R 5 Add the points in the boxes above 2 Rating of Landscape Potential If score is: ☐3 = H ☒1 or 2 = M ☐0 = L Record the rating on the first page R 6.0. Are the hydrologic functions provided by the site valuable to society? R 6.1. Distance to the nearest areas downstream that have flooding problems? Choose the description that best fits the site. The sub-basin immediately down-gradient of the wetland has flooding problems that result in damage to human or natural resources (e.g., houses or salmon redds) points = 2 Surface flooding problems are in a sub-basin farther down-gradient points = 1 No flooding problems anywhere downstream points = 0 2 R 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes = 2 No = 0 0 Total for R 6 Add the points in the boxes above 2 Rating of Value If score is: ☒2-4 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 7 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - I n d i c a t o r s t h a t s i t e f u n c t i o n s t o p r o v i d e i m p o r t a n t h a b i t a t H 1 . 0 . D o e s t h e s i t e h a v e t h e p o t e n t i a l t o p r o v i d e h a b i t a t ? H 1 . 1 . S t r u c t u r e o f p l a n t c o m m u n i t y : Indicators are Cowardin classes and strata within the Forested class. C h e c k t h e C o w a r d i n p l a n t c l a s s e s i n t h e w e t l a n d. Up to 10 patches may be combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ☐ A q u a t i c b e d 4 s t r u c t u r e s o r m o r e : p o i n t s = 4 ☒ E m e r g e n t 3 s t r u c t u r e s : p o i n t s = 2 ☐ S c r u b-s h r u b ( a r e a s w h e r e s h r u b s h a v e > 3 0 % c o v e r ) 2 s t r u c t u r e s : p o i n t s = 1 ☐ F o r e s t e d ( a r e a s w h e r e t r e e s h a v e > 3 0 % c o v e r ) 1 s t r u c t u r e : p o i n t s = 0 If the unit has a Forested class, check if: ☐ T h e F o r e s t e d c l a s s h a s 3 o u t o f 5 s t r a t a ( c a n o p y , s u b-c a n o p y , s h r u b s , h e r b a c e o u s , m o s s / g r o u n d-c o v e r ) t h a t e a c h c o v e r 2 0 % w i t h i n t h e F o r e s t e d p o l y g o n 1 H 1 . 2 . H y d r o p e r i o d s C h e c k t h e t y p e s o f w a t e r r e g i m e s ( h y d r o p e r i o d s ) p r e s e n t w i t h i n t h e w e t l a n d . T h e w a t e r r e g i m e h a s t o c o v e r m o r e t h a n 1 0 % o f t h e w e t l a n d o r ¼ a c t o c o u n t (see text for descriptions of hydroperiods) . ☐ P e r m a n e n t l y f l o o d e d o r i n u n d a t e d 4 o r m o r e t y p e s p r e s e n t : p o i n t s = 3 ☐ S e a s o n a l l y f l o o d e d o r i n u n d a t e d 3 t y p e s p r e s e n t : p o i n t s = 2 ☐ O c c a s i o n a l l y f l o o d e d o r i n u n d a t e d 2 t y p e s p r e s e n t : p o i n t s = 1 ☒ S a t u r a t e d o n l y 1 t y p e p r e s e n t : p o i n t s = 0 ☒ P e r m a n e n t l y f l o w i n g s t r e a m o r r i v e r i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ S e a s o n a l l y f l o w i n g s t r e a m i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ Lake Fringe wetland 2 points ☐ Freshwater tidal wetland 2 points 1 H 1 . 3 . R i c h n e s s o f p l a n t s p e c i e s C o u n t t h e n u m b e r o f p l a n t s p e c i e s i n t h e w e t l a n d t h a t c o v e r a t l e a s t 1 0 f t 2 . Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle I f y o u c o u n t e d : > 1 9 s p e c i e s p o i n t s = 2 5 - 1 9 s p e c i e s p o i n t s = 1 < 5 s p e c i e s p o i n t s = 0 0 H 1 . 4 . I n t e r s p e r s i o n o f h a b i t a t s D e c i d e f r o m t h e d i a g r a m s b e l o w w h e t h e r i n t e r s p e r s i o n a m o n g C o w a r d i n p l a n t s c l a s s e s ( d e s c r i b e d i n H 1 . 1 ) , o r t h e c l a s s e s a n d u n v e g e t a t e d a r e a s ( c a n i n c l u d e o p e n w a t e r o r m u d f l a t s ) i s h i g h , m o d e r a t e , l o w , o r n o n e . If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 p o i n t s Low = 1 p o i n t Moderate = 2 p o i n t s A l l t h r e e d i a g r a m s i n t h i s r o w a r e HIGH = 3 p o i n t s 0 Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 8 H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ☐ Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ☐ Standing snags (dbh > 4 in) within the wetland ☐ Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) ☐ Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ☐ At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ☐ Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) 0 Total for H 1 Add the points in the boxes above 2 Rating of Site Potential If score is: ☐15-18 = H ☐7-14 = M ☒0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: % undisturbed habitat: 0 + [(6% moderate and low intensity land uses)/2]: 3 = 3% If total accessible habitat is: > 1/3 (33.3%) of 1 km Polygon points = 3 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat: 1 + [(26% moderate and low intensity land uses)/2]: 13 = 14% Undisturbed habitat > 50% of Polygon points = 3 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 1 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) ≤ 50% of 1 km Polygon is high intensity points = 0 -2 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: ☐4-6 = H ☐1-3 = M ☒< 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ☒ It has 3 or more priority habitats within 100 m (see next page) ☐ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ☐ It is mapped as a location for an individual WDFW priority species ☐ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ☐ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 2 Rating of Value If score is: ☒2 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 9 WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ☐ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ☐ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ☐ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ☐ Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ☐ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see web link above). ☒ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ☐ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above). ☒ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ☐ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report – see web link on previous page). ☐ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ☐ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ☐ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ☒ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 10 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. Category SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ☐ The dominant water regime is tidal, ☐ Vegetated, and ☐ With a salinity greater than 0.5 ppt ☐Yes –Go to SC 1.1 ☒No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? ☐Yes = Category I ☐No - Go to SC 1.2 Cat. I SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. ☐Yes = Category I ☐No= Category II Cat. I Cat. II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? ☐Yes – Go to SC 2.2 ☒No – Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? ☐Yes = Category I ☒No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf ☐Yes – Contact WNHP/WDNR and go to SC 2.4 ☒No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? ☐Yes = Category I ☐No = Not a WHCV Cat. I SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? ☐Yes – Go to SC 3.3 ☒No – Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? ☐Yes – Go to SC 3.3 ☒No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ☐Yes = Is a Category I bog ☐No – Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? ☐Yes = Is a Category I bog ☐No = Is not a bog Cat. I Wetland name or number: Wetland D Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11 SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ☐ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ☐ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). ☐Yes = Category I ☒No = Not a forested wetland for this section Cat. I SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ☐ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ☐ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) ☐Yes – Go to SC 5.1 ☒No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland is larger than 1/10 ac (4350 ft2) ☐Yes = Category I ☐No = Category II Cat. I Cat. II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ☐ Long Beach Peninsula: Lands west of SR 103 ☐ Grayland-Westport: Lands west of SR 105 ☐ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 ☐Yes – Go to SC 6.1 ☒No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? ☐Yes = Category I ☐No – Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? ☐Yes = Category II ☐No – Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? ☐Yes = Category III ☐No = Category IV Cat I Cat. II Cat. III Cat. IV Category of wetland based on Special Characteristics If you answered No for all types, enter “Not Applicable” on Summary Form NA Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 12 Wetland name or number This page left blank intentionally Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1 RATING SUMMARY – Western Washington Name of wetland (or ID #): Wetland E Date of site visit: 7/2/2015 Rated by: K. Crandall, H. Mortensen Trained by Ecology? ☒Y ☐N Date of training: 09/2014 HGM Class used for rating: Depressional Wetland has multiple HGM classes? ☐Y ☒N NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: City of Renton Online Mapping Application (COR Maps) OVERALL WETLAND CATEGORY (based on functions ☒ or special characteristics ☐) 1. Category of wetland based on FUNCTIONS ☐ Category I – Total score = 23 - 27 ☐ Category II – Total score = 20 - 22 ☒ Category III – Total score = 16 - 19 ☐ Category IV – Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Circle the appropriate ratings Site Potential H M L H M L H M L Landscape Potential H M L H M L H M L Value H M L H M L H M L TOTAL Score Based on Ratings 5 7 5 17 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above ☒ Score for each function based on three ratings (order of ratings is not important) 9 = H,H,H 8 = H,H,M 7 = H,H,L 7 = H,M,M 6 = H,M,L 6 = M,M,M 5 = H,L,L 5 = M,M,L 4 = M,L,L 3 = L,L,L Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2 Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 E1 Hydroperiods D 1.4, H 1.2 E2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 E2 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 E1 Map of the contributing basin D 4.3, D 5.3 E3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 E4 Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 2 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to figure above) S 4.1 Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3 HGM Classification of Wetlands in Western Washington 1. Are the water levels in the entire unit usually controlled by tides except during floods? ☒NO – go to 2 ☐YES – the wetland class is Tidal Fringe – go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO – Saltwater Tidal Fringe (Estuarine) YES – Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ☒NO – go to 3 ☐YES – The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ☐The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ☐At least 30% of the open water area is deeper than 6.6 ft (2 m). ☒NO – go to 4 ☐YES – The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ☐The wetland is on a slope (slope can be very gradual), ☐The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ☐The water leaves the wetland without being impounded. ☒NO – go to 5 ☐YES – The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ☐The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ☐The overbank flooding occurs at least once every 2 years. For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4 ☒NO – go to 6 ☐YES – The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. ☐NO – go to 7 ☒YES – The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. ☐NO – go to 8 ☐YES – The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit being rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 5 DEPRESSIONAL AND FLATS WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality D 1.0. Does the site have the potential to improve water quality? D 1.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression (QUESTION 7 on key) with no surface water leaving it (no outlet). points = 3 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet. points = 2 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch. points = 1 1 D 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions).Yes = 4 No = 0 0 D 1.3. Characteristics and distribution of persistent plants (Emergent, Scrub-shrub, and/or Forested Cowardin classes): Wetland has persistent, ungrazed, plants > 95% of area points = 5 Wetland has persistent, ungrazed, plants > 1/2 of area points = 3 Wetland has persistent, ungrazed plants > 1/10 of area points = 1 Wetland has persistent, ungrazed plants < 1/10 of area points = 0 3 D 1.4. Characteristics of seasonal ponding or inundation: This is the area that is ponded for at least 2 months. See description in manual. Area seasonally ponded is > ½ total area of wetland points = 4 Area seasonally ponded is > ¼ total area of wetland points = 2 Area seasonally ponded is < ¼ total area of wetland points = 0 0 Total for D 1 Add the points in the boxes above 4 Rating of Site Potential If score is: ☐12-16 = H ☐6-11 = M ☒0-5 = L Record the rating on the first page D 2.0. Does the landscape have the potential to support the water quality function of the site? D 2.1. Does the wetland unit receive stormwater discharges? Yes = 1 No = 0 0 D 2.2. Is > 10% of the area within 150 ft of the wetland in land uses that generate pollutants? Yes = 1 No = 0 1 D 2.3. Are there septic systems within 250 ft of the wetland? Yes = 1 No = 0 0 D 2.4. Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2.3? Source Yes = 1 No = 0 0 Total for D 2 Add the points in the boxes above 1 Rating of Landscape Potential If score is: ☐3 or 4 = H ☒1 or 2 = M ☐0 = L Record the rating on the first page D 3.0. Is the water quality improvement provided by the site valuable to society? D 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list? Yes = 1 No = 0 0 D 3.2. Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes = 1 No = 0 1 D 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality (answer YES if there is a TMDL for the basin in which the unit is found)? Yes = 2 No = 0 0 Total for D 3 Add the points in the boxes above 1 Rating of Value If score is: ☐2-4 = H ☒1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 6 DEPRESSIONAL AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradation D 4.0. Does the site have the potential to reduce flooding and erosion? D 4.1. Characteristics of surface water outflows from the wetland: Wetland is a depression or flat depression with no surface water leaving it (no outlet) points = 4 Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outletpoints = 2 Wetland is a flat depression (QUESTION 7 on key), whose outlet is a permanently flowing ditch points = 1 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0 0 D 4.2. Depth of storage during wet periods: Estimate the height of ponding above the bottom of the outlet. For wetlands with no outlet, measure from the surface of permanent water or if dry, the deepest part. Marks of ponding are 3 ft or more above the surface or bottom of outlet points = 7 Marks of ponding between 2 ft to < 3 ft from surface or bottom of outlet points = 5 Marks are at least 0.5 ft to < 2 ft from surface or bottom of outlet points = 3 The wetland is a “headwater” wetland points = 3 Wetland is flat but has small depressions on the surface that trap water points = 1 Marks of ponding less than 0.5 ft (6 in) points = 0 3 D 4.3. Contribution of the wetland to storage in the watershed: Estimate the ratio of the area of upstream basin contributing surface water to the wetland to the area of the wetland unit itself. The area of the basin is less than 10 times the area of the unit points = 5 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire wetland is in the Flats class points = 5 3 Total for D 4 Add the points in the boxes above 6 Rating of Site Potential If score is: ☐12-16 = H ☒6-11 = M ☐0-5 = L Record the rating on the first page D 5.0. Does the landscape have the potential to support hydrologic functions of the site? D 5.1. Does the wetland receive stormwater discharges? Yes = 1 No = 0 0 D 5.2. Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes = 1 No = 0 1 D 5.3. Is more than 25% of the contributing basin of the wetland covered with intensive human land uses (residential at >1 residence/ac, urban, commercial, agriculture, etc.)? Yes = 1 No = 0 0 Total for D 5 Add the points in the boxes above 1 Rating of Landscape Potential If score is: ☐3 = H ☒1 or 2 = M ☐0 = L Record the rating on the first page D 6.0. Are the hydrologic functions provided by the site valuable to society? D 6.1. The unit is in a landscape that has flooding problems. Choose the description that best matches conditions around the wetland unit being rated. Do not add points. Choose the highest score if more than one condition is met. The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has damaged human or natural resources (e.g., houses or salmon redds): • Flooding occurs in a sub-basin that is immediately down-gradient of unit. points = 2 • Surface flooding problems are in a sub-basin farther down-gradient. points = 1 Flooding from groundwater is an issue in the sub-basin. points = 1 The existing or potential outflow from the wetland is so constrained by human or natural conditions that the water stored by the wetland cannot reach areas that flood. Explain why points = 0 There are no problems with flooding downstream of the wetland. points = 0 2 D 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes = 2 No = 0 0 Total for D 6 Add the points in the boxes above 2 Rating of Value If score is: ☒2-4 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 7 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - I n d i c a t o r s t h a t s i t e f u n c t i o n s t o p r o v i d e i m p o r t a n t h a b i t a t H 1 . 0 . D o e s t h e s i t e h a v e t h e p o t e n t i a l t o p r o v i d e h a b i t a t ? H 1 . 1 . S t r u c t u r e o f p l a n t c o m m u n i t y : Indicators are Cowardin classes and strata within the Forested class. C h e c k t h e C o w a r d i n p l a n t c l a s s e s i n t h e w e t l a n d. Up to 10 patches may be combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ☐ A q u a t i c b e d 4 s t r u c t u r e s o r m o r e : p o i n t s = 4 ☒ E m e r g e n t 3 s t r u c t u r e s : p o i n t s = 2 ☒ S c r u b-s h r u b ( a r e a s w h e r e s h r u b s h a v e > 3 0 % c o v e r ) 2 s t r u c t u r e s : p o i n t s = 1 ☐ F o r e s t e d ( a r e a s w h e r e t r e e s h a v e > 3 0 % c o v e r ) 1 s t r u c t u r e : p o i n t s = 0 If the unit has a Forested class, check if: ☐ T h e F o r e s t e d c l a s s h a s 3 o u t o f 5 s t r a t a ( c a n o p y , s u b-c a n o p y , s h r u b s , h e r b a c e o u s , m o s s / g r o u n d-c o v e r ) t h a t e a c h c o v e r 2 0 % w i t h i n t h e F o r e s t e d p o l y g o n 1 H 1 . 2 . H y d r o p e r i o d s C h e c k t h e t y p e s o f w a t e r r e g i m e s ( h y d r o p e r i o d s ) p r e s e n t w i t h i n t h e w e t l a n d . T h e w a t e r r e g i m e h a s t o c o v e r m o r e t h a n 1 0 % o f t h e w e t l a n d o r ¼ a c t o c o u n t (see text for descriptions of hydroperiods) . ☒ P e r m a n e n t l y f l o o d e d o r i n u n d a t e d 4 o r m o r e t y p e s p r e s e n t : p o i n t s = 3 ☒ S e a s o n a l l y f l o o d e d o r i n u n d a t e d 3 t y p e s p r e s e n t : p o i n t s = 2 ☐ O c c a s i o n a l l y f l o o d e d o r i n u n d a t e d 2 t y p e s p r e s e n t : p o i n t s = 1 ☐ S a t u r a t e d o n l y 1 t y p e p r e s e n t : p o i n t s = 0 ☐ P e r m a n e n t l y f l o w i n g s t r e a m o r r i v e r i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ S e a s o n a l l y f l o w i n g s t r e a m i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ Lake Fringe wetland 2 points ☐ Freshwater tidal wetland 2 points 1 H 1 . 3 . R i c h n e s s o f p l a n t s p e c i e s C o u n t t h e n u m b e r o f p l a n t s p e c i e s i n t h e w e t l a n d t h a t c o v e r a t l e a s t 1 0 f t 2 . Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle I f y o u c o u n t e d : > 1 9 s p e c i e s p o i n t s = 2 5 - 1 9 s p e c i e s p o i n t s = 1 < 5 s p e c i e s p o i n t s = 0 1 H 1 . 4 . I n t e r s p e r s i o n o f h a b i t a t s D e c i d e f r o m t h e d i a g r a m s b e l o w w h e t h e r i n t e r s p e r s i o n a m o n g C o w a r d i n p l a n t s c l a s s e s ( d e s c r i b e d i n H 1 . 1 ) , o r t h e c l a s s e s a n d u n v e g e t a t e d a r e a s ( c a n i n c l u d e o p e n w a t e r o r m u d f l a t s ) i s h i g h , m o d e r a t e , l o w , o r n o n e . If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 p o i n t s Low = 1 p o i n t Moderate = 2 p o i n t s A l l t h r e e d i a g r a m s i n t h i s r o w a r e HIGH = 3 p o i n t s 1 Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 8 H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ☐ Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ☐ Standing snags (dbh > 4 in) within the wetland ☐ Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) ☐ Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ☐ At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ☐ Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) 0 Total for H 1 Add the points in the boxes above 4 Rating of Site Potential If score is: ☐15-18 = H ☐7-14 = M ☒0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: % undisturbed habitat: 0 + [(6% moderate and low intensity land uses)/2]: 3 = 3% If total accessible habitat is: > 1/3 (33.3%) of 1 km Polygon points = 3 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat: 2 + [(20% moderate and low intensity land uses)/2]: 10 = 12% Undisturbed habitat > 50% of Polygon points = 3 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 1 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) ≤ 50% of 1 km Polygon is high intensity points = 0 -2 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: ☐4-6 = H ☐1-3 = M ☒< 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ☒ It has 3 or more priority habitats within 100 m (see next page) ☐ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ☐ It is mapped as a location for an individual WDFW priority species ☐ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ☐ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 2 Rating of Value If score is: ☒2 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 9 WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ☐ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ☐ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ☐ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ☐ Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ☐ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see web link above). ☒ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ☐ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above). ☒ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ☐ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report – see web link on previous page). ☐ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ☐ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ☐ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ☒ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 10 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. Category SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ☐ The dominant water regime is tidal, ☐ Vegetated, and ☐ With a salinity greater than 0.5 ppt ☐Yes –Go to SC 1.1 ☒No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? ☐Yes = Category I ☐No - Go to SC 1.2 Cat. I SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. ☐Yes = Category I ☐No= Category II Cat. I Cat. II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? ☐Yes – Go to SC 2.2 ☒No – Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? ☐Yes = Category I ☒No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf ☐Yes – Contact WNHP/WDNR and go to SC 2.4 ☒No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? ☐Yes = Category I ☐No = Not a WHCV Cat. I SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? ☐Yes – Go to SC 3.3 ☒No – Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? ☐Yes – Go to SC 3.3 ☒No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ☐Yes = Is a Category I bog ☐No – Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? ☐Yes = Is a Category I bog ☐No = Is not a bog Cat. I Wetland name or number: Wetland E Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11 SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ☐ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ☐ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). ☐Yes = Category I ☒No = Not a forested wetland for this section Cat. I SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ☐ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ☐ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) ☐Yes – Go to SC 5.1 ☒No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland is larger than 1/10 ac (4350 ft2) ☐Yes = Category I ☐No = Category II Cat. I Cat. II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ☐ Long Beach Peninsula: Lands west of SR 103 ☐ Grayland-Westport: Lands west of SR 105 ☐ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 ☐Yes – Go to SC 6.1 ☒No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? ☐Yes = Category I ☐No – Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? ☐Yes = Category II ☐No – Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? ☐Yes = Category III ☐No = Category IV Cat I Cat. II Cat. III Cat. IV Category of wetland based on Special Characteristics If you answered No for all types, enter “Not Applicable” on Summary Form NA Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 12 Wetland name or number This page left blank intentionally Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 1 RATING SUMMARY – Western Washington Name of wetland (or ID #): Wetland F Date of site visit: 7/2/2015 Rated by: K. Crandall, H. Mortensen Trained by Ecology? ☒Y ☐N Date of training: 09/2014 HGM Class used for rating: Slope Wetland has multiple HGM classes? ☐Y ☒N NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: City of Renton Online Mapping Application (COR Maps) OVERALL WETLAND CATEGORY (based on functions ☒ or special characteristics ☐) 1. Category of wetland based on FUNCTIONS ☐ Category I – Total score = 23 - 27 ☐ Category II – Total score = 20 - 22 ☒ Category III – Total score = 16 - 19 ☐ Category IV – Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Circle the appropriate ratings Site Potential H M L H M L H M L Landscape Potential H M L H M L H M L Value H M L H M L H M L TOTAL Score Based on Ratings 5 6 5 16 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II Wetland of High Conservation Value I Bog I Mature Forest I Old Growth Forest I Coastal Lagoon I II Interdunal I II III IV None of the above ☒ Score for each function based on three ratings (order of ratings is not important) 9 = H,H,H 8 = H,H,M 7 = H,H,L 7 = H,M,M 6 = H,M,L 6 = M,M,M 5 = H,L,L 5 = M,M,L 4 = M,L,L 3 = L,L,L Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 2 Maps and figures required to answer questions correctly for Western Washington Depressional Wetlands Map of: To answer questions: Figure # Cowardin plant classes D 1.3, H 1.1, H 1.4 Hydroperiods D 1.4, H 1.2 Location of outlet (can be added to map of hydroperiods) D 1.1, D 4.1 Boundary of area within 150 ft of the wetland (can be added to another figure) D 2.2, D 5.2 Map of the contributing basin D 4.3, D 5.3 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) D 3.1, D 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) D 3.3 Riverine Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 Hydroperiods H 1.2 Ponded depressions R 1.1 Boundary of area within 150 ft of the wetland (can be added to another figure) R 2.4 Plant cover of trees, shrubs, and herbaceous plants R 1.2, R 4.2 Width of unit vs. width of stream (can be added to another figure) R 4.1 Map of the contributing basin R 2.2, R 2.3, R 5.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) R 3.1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) R 3.2, R 3.3 Lake Fringe Wetlands Map of: To answer questions: Figure # Cowardin plant classes L 1.1, L 4.1, H 1.1, H 1.4 Plant cover of trees, shrubs, and herbaceous plants L 1.2 Boundary of area within 150 ft of the wetland (can be added to another figure) L 2.2 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) L 3.1, L 3.2 Screen capture of list of TMDLs for WRIA in which unit is found (from web) L 3.3 Slope Wetlands Map of: To answer questions: Figure # Cowardin plant classes H 1.1, H 1.4 F1 Hydroperiods H 1.2 F2 Plant cover of dense trees, shrubs, and herbaceous plants S 1.3 F1 Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to figure above) S 4.1 F1 Boundary of 150 ft buffer (can be added to another figure) S 2.1, S 5.1 F1 1 km Polygon: Area that extends 1 km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat H 2.1, H 2.2, H 2.3 F3 Screen capture of map of 303(d) listed waters in basin (from Ecology website) S 3.1, S 3.2 1 Screen capture of list of TMDLs for WRIA in which unit is found (from web) S 3.3 2 Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 3 HGM Classification of Wetlands in Western Washington 1. Are the water levels in the entire unit usually controlled by tides except during floods? ☒NO – go to 2 ☐YES – the wetland class is Tidal Fringe – go to 1.1 1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt (parts per thousand)? NO – Saltwater Tidal Fringe (Estuarine) YES – Freshwater Tidal Fringe If your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands. If it is Saltwater Tidal Fringe it is an Estuarine wetland and is not scored. This method cannot be used to score functions for estuarine wetlands. 2. The entire wetland unit is flat and precipitation is the only source (>90%) of water to it. Groundwater and surface water runoff are NOT sources of water to the unit. ☒NO – go to 3 ☐YES – The wetland class is Flats If your wetland can be classified as a Flats wetland, use the form for Depressional wetlands. 3. Does the entire wetland unit meet all of the following criteria? ☐The vegetated part of the wetland is on the shores of a body of permanent open water (without any plants on the surface at any time of the year) at least 20 ac (8 ha) in size; ☐At least 30% of the open water area is deeper than 6.6 ft (2 m). ☒NO – go to 4 ☐YES – The wetland class is Lake Fringe (Lacustrine Fringe) 4. Does the entire wetland unit meet all of the following criteria? ☒The wetland is on a slope (slope can be very gradual), ☒The water flows through the wetland in one direction (unidirectional) and usually comes from seeps. It may flow subsurface, as sheetflow, or in a swale without distinct banks, ☒The water leaves the wetland without being impounded. ☐NO – go to 5 ☒YES – The wetland class is Slope NOTE: Surface water does not pond in these type of wetlands except occasionally in very small and shallow depressions or behind hummocks (depressions are usually <3 ft diameter and less than 1 ft deep). 5. Does the entire wetland unit meet all of the following criteria? ☐The unit is in a valley, or stream channel, where it gets inundated by overbank flooding from that stream or river, ☐The overbank flooding occurs at least once every 2 years. For questions 1-7, the criteria described must apply to the entire unit being rated. If the hydrologic criteria listed in each question do not apply to the entire unit being rated, you probably have a unit with multiple HGM classes. In this case, identify which hydrologic criteria in questions 1-7 apply, and go to Question 8. Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 4 ☒NO – go to 6 ☐YES – The wetland class is Riverine NOTE: The Riverine unit can contain depressions that are filled with water when the river is not flooding 6. Is the entire wetland unit in a topographic depression in which water ponds, or is saturated to the surface, at some time during the year? This means that any outlet, if present, is higher than the interior of the wetland. ☐NO – go to 7 ☐YES – The wetland class is Depressional 7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding? The unit does not pond surface water more than a few inches. The unit seems to be maintained by high groundwater in the area. The wetland may be ditched, but has no obvious natural outlet. ☐NO – go to 8 ☐YES – The wetland class is Depressional 8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes. For example, seeps at the base of a slope may grade into a riverine floodplain, or a small stream within a Depressional wetland has a zone of flooding along its sides. GO BACK AND IDENTIFY WHICH OF THE HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT (make a rough sketch to help you decide). Use the following table to identify the appropriate class to use for the rating system if you have several HGM classes present within the wetland unit being scored. NOTE: Use this table only if the class that is recommended in the second column represents 10% or more of the total area of the wetland unit being rated. If the area of the HGM class listed in column 2 is less than 10% of the unit; classify the wetland using the class that represents more than 90% of the total area. HGM classes within the wetland unit being rated HGM class to use in rating Slope + Riverine Riverine Slope + Depressional Depressional Slope + Lake Fringe Lake Fringe Depressional + Riverine along stream within boundary of depression Depressional Depressional + Lake Fringe Depressional Riverine + Lake Fringe Riverine Salt Water Tidal Fringe and any other class of freshwater wetland Treat as ESTUARINE If you are still unable to determine which of the above criteria apply to your wetland, or if you have more than 2 HGM classes within a wetland boundary, classify the wetland as Depressional for the rating. Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 11 SLOPE WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality S 1.0. Does the site have the potential to improve water quality? S 1.1. Characteristics of the average slope of the wetland: (a 1% slope has a 1 ft vertical drop in elevation for every 100 ft of horizontal distance) Slope is 1% or less points = 3 Slope is > 1%-2% points = 2 Slope is > 2%-5% points = 1 Slope is greater than 5% points = 0 0 S 1.2. The soil 2 in below the surface (or duff layer) is true clay or true organic (use NRCS definitions): Yes = 3 No = 0 0 S 1.3. Characteristics of the plants in the wetland that trap sediments and pollutants: Choose the points appropriate for the description that best fits the plants in the wetland. Dense means you have trouble seeing the soil surface (>75% cover), and uncut means not grazed or mowed and plants are higher than 6 in. Dense, uncut, herbaceous plants > 90% of the wetland area points = 6 Dense, uncut, herbaceous plants > ½ of area points = 3 Dense, woody, plants > ½ of area points = 2 Dense, uncut, herbaceous plants > ¼ of area points = 1 Does not meet any of the criteria above for plants points = 0 0 Total for S 1 Add the points in the boxes above 0 Rating of Site Potential If score is: ☐12 = H ☐6-11 = M ☒0-5 = L Record the rating on the first page S 2.0. Does the landscape have the potential to support the water quality function of the site? S 2.1. Is > 10% of the area within 150 ft on the uphill side of the wetland in land uses that generate pollutants? Yes = 1 No = 0 1 S 2.2. Are there other sources of pollutants coming into the wetland that are not listed in question S 2.1? Other sources Yes = 1 No = 0 0 Total for S 2 Add the points in the boxes above 1 Rating of Landscape Potential If score is: ☒1-2 = M ☐0 = L Record the rating on the first page S 3.0. Is the water quality improvement provided by the site valuable to society? S 3.1. Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list? Yes = 1 No = 0 0 S 3.2. Is the wetland in a basin or sub-basin where water quality is an issue? At least one aquatic resource in the basin is on the 303(d) list. Yes = 1 No = 0 1 S 3.3. Has the site been identified in a watershed or local plan as important for maintaining water quality? Answer YES if there is a TMDL for the basin in which unit is found. Yes = 2 No = 0 0 Total for S 3 Add the points in the boxes above 1 Rating of Value If score is: ☐2-4 = H ☒1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 12 SLOPE WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream erosion S 4.0. Does the site have the potential to reduce flooding and stream erosion? S 4.1. Characteristics of plants that reduce the velocity of surface flows during storms: Choose the points appropriate for the description that best fits conditions in the wetland. Stems of plants should be thick enough (usually >1/8 8 in), or dense enough, to remain erect during surface flows. Dense, uncut, rigid plants cover > 90% of the area of the wetland points = 1 All other conditions points = 0 0 Rating of Site Potential If score is: ☐1 = M ☒0 = L Record the rating on the first page S 5.0. Does the landscape have the potential to support the hydrologic functions of the site? S 5.1. Is more than 25% of the area within 150 ft upslope of wetland in land uses or cover that generate excess surface runoff? Yes = 1 No = 0 1 Rating of Landscape Potential If score is: ☒1 = M ☐0 = L Record the rating on the first page S 6.0. Are the hydrologic functions provided by the site valuable to society? S 6.1. Distance to the nearest areas downstream that have flooding problems: The sub-basin immediately down-gradient of site has flooding problems that result in damage to human or natural resources (e.g., houses or salmon redds) points = 2 Surface flooding problems are in a sub-basin farther down-gradient points = 1 No flooding problems anywhere downstream points = 0 2 S 6.2. Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes = 2 No = 0 0 Total for S 6 Add the points in the boxes above 2 Rating of Value If score is: ☒2-4 = H ☐1 = M ☐0 = L Record the rating on the first page NOTES and FIELD OBSERVATIONS: Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 13 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - I n d i c a t o r s t h a t s i t e f u n c t i o n s t o p r o v i d e i m p o r t a n t h a b i t a t H 1 . 0 . D o e s t h e s i t e h a v e t h e p o t e n t i a l t o p r o v i d e h a b i t a t ? H 1 . 1 . S t r u c t u r e o f p l a n t c o m m u n i t y : Indicators are Cowardin classes and strata within the Forested class. C h e c k t h e C o w a r d i n p l a n t c l a s s e s i n t h e w e t l a n d. Up to 10 patches may be combined for each class to meet the threshold of ¼ ac or more than 10% of the unit if it is smaller than 2.5 ac. Add the number of structures checked. ☐ A q u a t i c b e d 4 s t r u c t u r e s o r m o r e : p o i n t s = 4 ☒ E m e r g e n t 3 s t r u c t u r e s : p o i n t s = 2 ☒ S c r u b-s h r u b ( a r e a s w h e r e s h r u b s h a v e > 3 0 % c o v e r ) 2 s t r u c t u r e s : p o i n t s = 1 ☐ F o r e s t e d ( a r e a s w h e r e t r e e s h a v e > 3 0 % c o v e r ) 1 s t r u c t u r e : p o i n t s = 0 If the unit has a Forested class, check if: ☐ T h e F o r e s t e d c l a s s h a s 3 o u t o f 5 s t r a t a ( c a n o p y , s u b-c a n o p y , s h r u b s , h e r b a c e o u s , m o s s / g r o u n d-c o v e r ) t h a t e a c h c o v e r 2 0 % w i t h i n t h e F o r e s t e d p o l y g o n 1 H 1 . 2 . H y d r o p e r i o d s C h e c k t h e t y p e s o f w a t e r r e g i m e s ( h y d r o p e r i o d s ) p r e s e n t w i t h i n t h e w e t l a n d . T h e w a t e r r e g i m e h a s t o c o v e r m o r e t h a n 1 0 % o f t h e w e t l a n d o r ¼ a c t o c o u n t (see text for descriptions of hydroperiods) . ☐ P e r m a n e n t l y f l o o d e d o r i n u n d a t e d 4 o r m o r e t y p e s p r e s e n t : p o i n t s = 3 ☐ S e a s o n a l l y f l o o d e d o r i n u n d a t e d 3 t y p e s p r e s e n t : p o i n t s = 2 ☐ O c c a s i o n a l l y f l o o d e d o r i n u n d a t e d 2 t y p e s p r e s e n t : p o i n t s = 1 ☒ S a t u r a t e d o n l y 1 t y p e p r e s e n t : p o i n t s = 0 ☐ P e r m a n e n t l y f l o w i n g s t r e a m o r r i v e r i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ S e a s o n a l l y f l o w i n g s t r e a m i n , o r a d j a c e n t t o , t h e w e t l a n d ☐ Lake Fringe wetland 2 points ☐ Freshwater tidal wetland 2 points 0 H 1 . 3 . R i c h n e s s o f p l a n t s p e c i e s C o u n t t h e n u m b e r o f p l a n t s p e c i e s i n t h e w e t l a n d t h a t c o v e r a t l e a s t 1 0 f t 2 . Different patches of the same species can be combined to meet the size threshold and you do not have to name the species. Do not include Eurasian milfoil, reed canarygrass, purple loosestrife, Canadian thistle I f y o u c o u n t e d : > 1 9 s p e c i e s p o i n t s = 2 5 - 1 9 s p e c i e s p o i n t s = 1 < 5 s p e c i e s p o i n t s = 0 1 H 1 . 4 . I n t e r s p e r s i o n o f h a b i t a t s D e c i d e f r o m t h e d i a g r a m s b e l o w w h e t h e r i n t e r s p e r s i o n a m o n g C o w a r d i n p l a n t s c l a s s e s ( d e s c r i b e d i n H 1 . 1 ) , o r t h e c l a s s e s a n d u n v e g e t a t e d a r e a s ( c a n i n c l u d e o p e n w a t e r o r m u d f l a t s ) i s h i g h , m o d e r a t e , l o w , o r n o n e . If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 p o i n t s Low = 1 p o i n t Moderate = 2 p o i n t s A l l t h r e e d i a g r a m s i n t h i s r o w a r e HIGH = 3 p o i n t s 1 Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 14 H 1.5. Special habitat features: Check the habitat features that are present in the wetland. The number of checks is the number of points. ☒ Large, downed, woody debris within the wetland (> 4 in diameter and 6 ft long). ☐ Standing snags (dbh > 4 in) within the wetland ☐ Undercut banks are present for at least 6.6 ft (2 m) and/or overhanging plants extends at least 3.3 ft (1 m) over a stream (or ditch) in, or contiguous with the wetland, for at least 33 ft (10 m) ☐ Stable steep banks of fine material that might be used by beaver or muskrat for denning (> 30 degree slope) OR signs of recent beaver activity are present (cut shrubs or trees that have not yet weathered where wood is exposed) ☐ At least ¼ ac of thin-stemmed persistent plants or woody branches are present in areas that are permanently or seasonally inundated (structures for egg-laying by amphibians) ☐ Invasive plants cover less than 25% of the wetland area in every stratum of plants (see H 1.1 for list of strata) 1 Total for H 1 Add the points in the boxes above 4 Rating of Site Potential If score is: ☐15-18 = H ☐7-14 = M ☒0-6 = L Record the rating on the first page H 2.0. Does the landscape have the potential to support the habitat functions of the site? H 2.1. Accessible habitat (include only habitat that directly abuts wetland unit). Calculate: % undisturbed habitat: 0 + [(6% moderate and low intensity land uses)/2]: 3 = 3% If total accessible habitat is: > 1/3 (33.3%) of 1 km Polygon points = 3 20-33% of 1 km Polygon points = 2 10-19% of 1 km Polygon points = 1 < 10% of 1 km Polygon points = 0 0 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat: 2 + [(20% moderate and low intensity land uses)/2]: 10 =12% Undisturbed habitat > 50% of Polygon points = 3 Undisturbed habitat 10-50% and in 1-3 patches points = 2 Undisturbed habitat 10-50% and > 3 patches points = 1 Undisturbed habitat < 10% of 1 km Polygon points = 0 1 H 2.3. Land use intensity in 1 km Polygon: If > 50% of 1 km Polygon is high intensity land use points = (- 2) ≤ 50% of 1 km Polygon is high intensity points = 0 -2 Total for H 2 Add the points in the boxes above -1 Rating of Landscape Potential If score is: ☐4-6 = H ☐1-3 = M ☒< 1 = L Record the rating on the first page H 3.0. Is the habitat provided by the site valuable to society? H 3.1. Does the site provide habitat for species valued in laws, regulations, or policies? Choose only the highest score that applies to the wetland being rated. Site meets ANY of the following criteria: points = 2 ☒ It has 3 or more priority habitats within 100 m (see next page) ☐ It provides habitat for Threatened or Endangered species (any plant or animal on the state or federal lists) ☐ It is mapped as a location for an individual WDFW priority species ☐ It is a Wetland of High Conservation Value as determined by the Department of Natural Resources ☐ It has been categorized as an important habitat site in a local or regional comprehensive plan, in a Shoreline Master Plan, or in a watershed plan Site has 1 or 2 priority habitats (listed on next page) within 100 m points = 1 Site does not meet any of the criteria above points = 0 2 Rating of Value If score is: ☒2 = H ☐1 = M ☐0 = L Record the rating on the first page Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 15 WDFW Priority Habitats Priority habitats listed by WDFW (see complete descriptions of WDFW priority habitats, and the counties in which they can be found, in: Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia, Washington. 177 pp. http://wdfw.wa.gov/publications/00165/wdfw00165.pdf or access the list from here: http://wdfw.wa.gov/conservation/phs/list/) Count how many of the following priority habitats are within 330 ft (100 m) of the wetland unit: NOTE: This question is independent of the land use between the wetland unit and the priority habitat. ☐ Aspen Stands: Pure or mixed stands of aspen greater than 1 ac (0.4 ha). ☐ Biodiversity Areas and Corridors: Areas of habitat that are relatively important to various species of native fish and wildlife (full descriptions in WDFW PHS report). ☐ Herbaceous Balds: Variable size patches of grass and forbs on shallow soils over bedrock. ☐ Old-growth/Mature forests: Old-growth west of Cascade crest – Stands of at least 2 tree species, forming a multi- layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha ) > 32 in (81 cm) dbh or > 200 years of age. Mature forests – Stands with average diameters exceeding 21 in (53 cm) dbh; crown cover may be less than 100%; decay, decadence, numbers of snags, and quantity of large downed material is generally less than that found in old-growth; 80-200 years old west of the Cascade crest. ☐ Oregon White Oak: Woodland stands of pure oak or oak/conifer associations where canopy coverage of the oak component is important (full descriptions in WDFW PHS report p. 158 – see web link above). ☒ Riparian: The area adjacent to aquatic systems with flowing water that contains elements of both aquatic and terrestrial ecosystems which mutually influence each other. ☐ Westside Prairies: Herbaceous, non-forested plant communities that can either take the form of a dry prairie or a wet prairie (full descriptions in WDFW PHS report p. 161 – see web link above). ☒ Instream: The combination of physical, biological, and chemical processes and conditions that interact to provide functional life history requirements for instream fish and wildlife resources. ☐ Nearshore: Relatively undisturbed nearshore habitats. These include Coastal Nearshore, Open Coast Nearshore, and Puget Sound Nearshore. (full descriptions of habitats and the definition of relatively undisturbed are in WDFW report – see web link on previous page). ☐ Caves: A naturally occurring cavity, recess, void, or system of interconnected passages under the earth in soils, rock, ice, or other geological formations and is large enough to contain a human. ☐ Cliffs: Greater than 25 ft (7.6 m) high and occurring below 5000 ft elevation. ☐ Talus: Homogenous areas of rock rubble ranging in average size 0.5 - 6.5 ft (0.15 - 2.0 m), composed of basalt, andesite, and/or sedimentary rock, including riprap slides and mine tailings. May be associated with cliffs. ☒ Snags and Logs: Trees are considered snags if they are dead or dying and exhibit sufficient decay characteristics to enable cavity excavation/use by wildlife. Priority snags have a diameter at breast height of > 20 in (51 cm) in western Washington and are > 6.5 ft (2 m) in height. Priority logs are > 12 in (30 cm) in diameter at the largest end, and > 20 ft (6 m) long. Note: All vegetated wetlands are by definition a priority habitat but are not included in this list because they are addressed elsewhere. Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 16 CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS Wetland Type Check off any criteria that apply to the wetland. Circle the category when the appropriate criteria are met. Category SC 1.0. Estuarine wetlands Does the wetland meet the following criteria for Estuarine wetlands? ☐ The dominant water regime is tidal, ☐ Vegetated, and ☐ With a salinity greater than 0.5 ppt ☐Yes –Go to SC 1.1 ☒No= Not an estuarine wetland SC 1.1. Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? ☐Yes = Category I ☐No - Go to SC 1.2 Cat. I SC 1.2. Is the wetland unit at least 1 ac in size and meets at least two of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing, and has less than 10% cover of non-native plant species. (If non-native species are Spartina, see page 25) ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. ☐Yes = Category I ☐No= Category II Cat. I Cat. II SC 2.0. Wetlands of High Conservation Value (WHCV) SC 2.1. Has the WA Department of Natural Resources updated their website to include the list of Wetlands of High Conservation Value? ☐Yes – Go to SC 2.2 ☒No – Go to SC 2.3 SC 2.2. Is the wetland listed on the WDNR database as a Wetland of High Conservation Value? ☐Yes = Category I ☒No = Not a WHCV SC 2.3. Is the wetland in a Section/Township/Range that contains a Natural Heritage wetland? http://www1.dnr.wa.gov/nhp/refdesk/datasearch/wnhpwetlands.pdf ☐Yes – Contact WNHP/WDNR and go to SC 2.4 ☒No = Not a WHCV SC 2.4. Has WDNR identified the wetland within the S/T/R as a Wetland of High Conservation Value and listed it on their website? ☐Yes = Category I ☐No = Not a WHCV Cat. I SC 3.0. Bogs Does the wetland (or any part of the unit) meet both the criteria for soils and vegetation in bogs? Use the key below. If you answer YES you will still need to rate the wetland based on its functions. SC 3.1. Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16 in or more of the first 32 in of the soil profile? ☐Yes – Go to SC 3.3 ☒No – Go to SC 3.2 SC 3.2. Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? ☐Yes – Go to SC 3.3 ☒No = Is not a bog SC 3.3. Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least a 30% cover of plant species listed in Table 4? ☐Yes = Is a Category I bog ☐No – Go to SC 3.4 NOTE: If you are uncertain about the extent of mosses in the understory, you may substitute that criterion by measuring the pH of the water that seeps into a hole dug at least 16 in deep. If the pH is less than 5.0 and the plant species in Table 4 are present, the wetland is a bog. SC 3.4. Is an area with peats or mucks forested (> 30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann spruce, or western white pine, AND any of the species (or combination of species) listed in Table 4 provide more than 30% of the cover under the canopy? ☐Yes = Is a Category I bog ☐No = Is not a bog Cat. I Wetland name or number: Wetland F Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 17 SC 4.0. Forested Wetlands Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA Department of Fish and Wildlife’s forests as priority habitats? If you answer YES you will still need to rate the wetland based on its functions. ☐ Old-growth forests (west of Cascade crest): Stands of at least two tree species, forming a multi-layered canopy with occasional small openings; with at least 8 trees/ac (20 trees/ha) that are at least 200 years of age OR have a diameter at breast height (dbh) of 32 in (81 cm) or more. ☐ Mature forests (west of the Cascade Crest): Stands where the largest trees are 80- 200 years old OR the species that make up the canopy have an average diameter (dbh) exceeding 21 in (53 cm). ☐Yes = Category I ☒No = Not a forested wetland for this section Cat. I SC 5.0. Wetlands in Coastal Lagoons Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? ☐ The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or, less frequently, rocks ☐ The lagoon in which the wetland is located contains ponded water that is saline or brackish (> 0.5 ppt) during most of the year in at least a portion of the lagoon (needs to be measured near the bottom) ☐Yes – Go to SC 5.1 ☒No = Not a wetland in a coastal lagoon SC 5.1. Does the wetland meet all of the following three conditions? ☐ The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species on p. 100). ☐ At least ¾ of the landward edge of the wetland has a 100 ft buffer of shrub, forest, or un-grazed or un- mowed grassland. ☐ The wetland is larger than 1/10 ac (4350 ft2) ☐Yes = Category I ☐No = Category II Cat. I Cat. II SC 6.0. Interdunal Wetlands Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership or WBUO)? If you answer yes you will still need to rate the wetland based on its habitat functions. In practical terms that means the following geographic areas: ☐ Long Beach Peninsula: Lands west of SR 103 ☐ Grayland-Westport: Lands west of SR 105 ☐ Ocean Shores-Copalis: Lands west of SR 115 and SR 109 ☐Yes – Go to SC 6.1 ☒No = not an interdunal wetland for rating SC 6.1. Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form (rates H,H,H or H,H,M for the three aspects of function)? ☐Yes = Category I ☐No – Go to SC 6.2 SC 6.2. Is the wetland 1 ac or larger, or is it in a mosaic of wetlands that is 1 ac or larger? ☐Yes = Category II ☐No – Go to SC 6.3 SC 6.3. Is the unit between 0.1 and 1 ac, or is it in a mosaic of wetlands that is between 0.1 and 1 ac? ☐Yes = Category III ☐No = Category IV Cat I Cat. II Cat. III Cat. IV Category of wetland based on Special Characteristics If you answered No for all types, enter “Not Applicable” on Summary Form NA Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 18 Wetland name or number This page left blank intentionally R ENTON T HUNDER H ILLS 2014 W ETLAND R ATING F ORM F IGURES Figure A1. Map of Cowardin plant classes with 150-foot buffer for Wetland A. ............... 2 Figure A2. Map of hydroperiods and outlet for Wetland A............................................... 2 Figure A3. Map of the contributing basin for Wetland A. ................................................. 3 Figure A4. Approximate 1 km polygon that extends from Wetland A edge including polygons for undisturbed and moderate intensity land use. ...................... 3 Figure B1. Map of Cowardin plant classes with 150-foot buffer for Wetland B. ............... 4 Figure B2. Map of hydroperiods for Wetland B. .............................................................. 4 Figure B3. Map of contributing basin for Wetland B. ....................................................... 5 Figure B4. Approximate 1 km polygon that extends from Wetland B edge including polygons for undisturbed and moderate intensity land use. ...................... 5 Figure C1. Map of Cowardin plant classes with 150-foot buffer for Wetland C. ............... 6 Figure C2. Map of hydroperiods for Wetland C. .............................................................. 6 Figure C3. Approximate 1 km polygon that extends from Wetland C edge including polygons for undisturbed and moderate intensity land use. ...................... 7 Figure D1. Map of Cowardin plant classes with 150-foot buffer for Wetland D. ............... 7 Figure D2. Map of hydroperiods for Wetland D. .............................................................. 8 Figure D3. Map of contributing basin for Wetland D. ...................................................... 8 Figure D4. Approximate 1 km polygon that extends from Wetland D edge including polygons for undisturbed and moderate intensity land use. ...................... 9 Figure E1. Map of Cowardin plant classes with 150-foot buffer for Wetland E. ............... 9 Figure E2. Map of hydroperiods for Wetland E. ............................................................ 10 Figure E3. Map of the contributing basin for Wetland E. ............................................... 10 Figure E4. Approximate 1 km polygon that extends from Wetland E edge including polygons for undisturbed and moderate intensity land use. .................... 11 Figure F1. Map of Cowardin plant classes with 150-foot buffer for Wetland F. ............. 11 Figure F2. Map of hydroperiods for Wetland F. ............................................................ 12 Figure F3. Approximate 1 km polygon that extends from Wetland F edge including polygons for undisturbed and moderate intensity land use. .................... 12 Figure 1. Screen capture of map of 303d listed waters in basin (from Ecology web site). ............................................................................................................... 13 Figure 2. Screen capture of list of TMDL’s for WRIA in which unit is found (from web). . 14 2 Figure A1. Map of Cowardin plant classes with 150-foot buffer for Wetland A. Figure A2. Map of hydroperiods and outlet for Wetland A. Forested Seasonal stream Outlet is a culvert under Saturated only Permanently flooded 3 Figure A3. Map of the contributing basin for Wetland A. Figure A4. Approximate 1 km polygon that extends from Wetland A edge including polygons for undisturbed and moderate intensity land use. Contributing basin Approximate wetland location 1 km polygon Approximate wetland Undisturbed (purple) Moderate intensity (orange) 4 Figure B1. Map of Cowardin plant classes with 150-foot buffer for Wetland B. Figure B2. Map of hydroperiods for Wetland B. Emergent Forested Occasionally flooded Permanently flowing stream R1.1 -No depressions present. R4.1 – Wetland is 30 feet wide on average;stream is approximately 10 feet wide. R1.2/4.2 –Area of Cowardin forested class also contains shrubs - determined to be >90% cover and >2/3 area of the wetland. 5 Figure B3. Map of contributing basin for Wetland B. Figure B4. Approximate 1 km polygon that extends from Wetland B edge including polygons for undisturbed and moderate intensity land use. Contributing basinApproximate wetland location 1 km polygon Approximate wetland Moderate intensity (orange) Undisturbed (purple) 6 Figure C1. Map of Cowardin plant classes with 150-foot buffer for Wetland C. Figure C2. Map of hydroperiods for Wetland C. Scrub-shrub Emergent Saturated only S4.1 –Scrub-shrub Cowardin class is considered dense and rigid; emergent class is dense, not rigid. Permanently flowing stream 7 Figure C3. Approximate 1 km polygon that extends from Wetland C edge including polygons for undisturbed and moderate intensity land use. Figure D1. Map of Cowardin plant classes with 150-foot buffer for Wetland D. Emergent 1 km polygon Approximate wetland Moderate intensity (orange) Undisturbed (purple) R1.2/4.2 –Area of Cowardin emergent class also considered dense herbaceous. 8 Figure D2. Map of hydroperiods for Wetland D. Figure D3. Map of contributing basin for Wetland D. Saturated only Permanently flowing stream R1.1 -Few depressions present (<1/2 area of wetland). R4.1 –Wetland is 15 feet wide on average;stream is approximately 8 feet wide. Depressions Contributing basin Approximate wetland location 9 Figure D4. Approximate 1 km polygon that extends from Wetland D edge including polygons for undisturbed and moderate intensity land use. Figure E1. Map of Cowardin plant classes with 150-foot buffer for Wetland E. Scrub-shrub Emergent 1 km polygon Approximate wetland Moderate intensity (orange) Undisturbed (purple) 10 Figure E2. Map of hydroperiods for Wetland E. Figure E3. Map of the contributing basin for Wetland E. Seasonally flooded Permanently flooded Outlet 11 Figure E4. Approximate 1 km polygon that extends from Wetland E edge including polygons for undisturbed and moderate intensity land use. Figure F1. Map of Cowardin plant classes with 150-foot buffer for Wetland F. Emergent 1 km polygon Approximate wetland Moderate intensity (orange) Undisturbed (purple) S1.3/4.1 –Plant cover is not considered dense or rigid. Lawn area that generates pollutants and increases runoff upslope of wetland. Scrub-shrub 12 Figure F2. Map of hydroperiods for Wetland F. Figure F3. Approximate 1 km polygon that extends from Wetland F edge including polygons for undisturbed and moderate intensity land use. Saturated only 1 km polygon Approximate wetland Moderate intensity (orange) Undisturbed (purple) 13 Figure 1. Screen capture of map of 303d listed waters in basin (from Ecology web site). Study area 14 Figure 2. Screen capture of list of TMDL’s for WRIA in which wetland units are found (from web).