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HomeMy WebLinkAbout09B- Wetland Report Offices: Port Angeles, Washington, Winston and Eugene, Oregon, Rocklin California Main Office: P.O. Box 1239, Winston, OR 97496 ~ Telephone: (360) 460-6451 email: brad@westechcompany.com WESTECH COMPANY Environmental Consulting ~ Site Permitting POND REMOVAL WETLAND DELINEATION 1060 WHITNEY ROAD - ASSESSOR’S PARCEL # 996-40-0007 QUILCENE, JEFFERSON COUNTY WASHINGTON June 2022 G. Bradford Shea, Ph.D. Submitted to: JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street Port Townsend, Washington 98368 Submitted by: WESTECH COMPANY Port Angeles, Washington 98362 POND REMOVAL WETLAND DELINEATION 1060 WHITNEY ROAD - ASSESSOR’S PARCEL # 996-40-0007 QUILCENE, JEFFERSON COUNTY WASHINGTON June 2022 G. Bradford Shea, Ph.D. Copyright 2022 by G. Bradford Shea, Westech Company – All Rights Reserved Submitted to: JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street Port Townsend, Washington 98368 Submitted by: WESTECH COMPANY Port Angeles, Washington 98362 WW1687.6-WhitneyPondRemovalWD.TOC/060922/mas i TABLE OF CONTENTS CHAPTER/SECTION PAGE NO. _______________________________________________________________________ 1.0 INTRODUCTION 1 2.0 METHODS 7 3.0 WETLAND DELINEATION RESULTS 9 3.1 Existing Conditions 9 3.2 Description of Wetlands 15 3.3 Land Uses and Habitat Values 16 3.4 Wetland Types and Buffers 17 3.5 Jefferson County Wetland Map 17 4.0 CONCLUSIONS AND RECOMMENDATIONS 18 4.1 Conclusions 18 4.2 Recommendations 18 5.0 REFERENCES 19 TABLES Table 1. List of Plant Species: On-Site Wetlands 11 Table 2. Site Soils 14 FIGURES Figure 1. Location Map 2 Figure 2. Vicinity Map 3 Figure 3. Project Site Map 4 Figure 4. Plan View Pond Removal At 1060 Whitney Road 5 Figure 5. Map of Critical Areas 10 ` Figure 6. Soil Map 13 APPENDICES Appendix A – Site Photographs A-1 Appendix B – Wetland Data Forms B-1 Appendix C – Wetland Rating Forms & Maps C-1 WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 1 1.0 INTRODUCTION The Project Site is owned by David Whitney and is located at 1060 Whitney Road in Quilcene, Washington (Figures 1 - 4). The Project Site is located in the NE Quarter of Section 34 of Township 26 N and Range 1 West, within Jefferson County, Washington. The parcel number is 996-40-0007, according to the County’s on-line data base (Jefferson County 2022). It is Lot 7 of the Lagoon View Long Plat Alteration (Northwestern Territories 2017). The Parcel is 6.78 acres in size County Assessor's parcel maps and Google Earth aerial maps were used to determine locations and features of the Project Site (Figures 1-4). Field investigation and analysis of the wetlands was conducted by Dr. G. Bradford Shea with assistance of Mr. Collin Boe during February and March 2022. Mapping and Wetland Rating Analysis was by Mr. Trevor Shea, CWD. Administration, editing and proofing was conducted by Ms. Mary Ann Shea. The Project Site is one residential lot, roughly 6.78 acres in size. The proposed project is to remove an existing pond and restore the natural stream channel on the Site. The pond removal has been described in a JARPA Permit Application previously submitted to the Washington Department of Fish and Wildlife (WDFW) by Westech Company (October 2021). The Project Elements for the Pond Removal are shown in (Figure 4). The property has been mapped as containing one wetland located near the center of the Site (Wetland A) – as well as an unnamed stream channel. The wetland was rated as a Category IV Wetland (Wetland A). The stream channel has been recently designated as a Fish-Bearing Stream by Washington Department of Fish and Wildlife (WDFW), although it was previously considered to be a Non-Fish Bearing Stream by the Washington Department of Natural Resources (DNR 2021). The stream currently runs through the existing pond, exiting via two culverts within the historical stream channel. The surrounding area consists of private residences and undeveloped lots. This area along the shoreline of Hood Canal on the Toandos Peninsula is sparsely populated with rural properties and the nearest l town area (Quilcene) is located about 15 miles from the Site by road, but only 9 miles north-northwest by direct measurement. Mr. Whitney contracted with Westech Company (Westech) to delineate the wetlands that are on the Project Site. The Project Site was found to contain one Category IV slope wetland (Wetland A) located near the center of the property (near the proposed Pond Removal Site). No other wetlands were found to exist on the Site; however, an estuarine wetland is located at the mouth of the stream along Hood Canal on an adjacent property (about 500 feet from the Project). Figure 1. Location Map Westech Company 2022 Source: Google Earth 2021 Figure 2. Vicinity Map Westech Company 2022 Source: Google Earth 2021 Figure 3. Project Site Map Westech Company 2022 Source: Google Earth 2021 Figure 4. Plan View Pond Removal at 1060 Whitney Road (470 42’ 25.47” N.Lat. 1220 47’ 9.04” W.Long) Westech Company 2022 Source: Google Earth 2021 WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 6 The proposed project of the removal of a pond as requested by County and State agencies would be classified as a low intensity land use under the Jefferson County Critical Areas Code since no structures are proposed (JCCAC Chapter 18.22.730). There will be no utilities associated with the Project and no road will be installed, since it is easily accessible for equipment from the existing driveway (Whitney Road). Chapter 2.0 of this report summarizes methods utilized in fieldwork and research connected with preparation of this Wetland Delineation Report. Chapter 3.0 of this report contains results of the delineation for the three wetlands found. Chapter 4.0 reports Conclusions and Recommendations. Chapter 5.0 contains citations for references used. Site Photographs are contained in Appendix A. Data forms (Appendix B) and the Wetland Rating Forms (Appendix C) are also appended. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 7 2.0 METHODS Methods for delineation were essentially those recommended by the U.S. Army Corps of Engineers (USACE), for Routine On-Site Field Method of delineation of wetlands (USACE 1987/1989, 2010). Wetland rating was accomplished according to the Guidelines of the Jefferson County Critical Areas Code (Jefferson County 2022), and the Washington State Wetlands Rating System (Western Washington) (DOE 2014). Additional guidelines and requirements of the Jefferson County Critical Areas Code were applied as applicable. Wetland plants were primarily identified in the field, with subsequent collection and keying when necessary. Plants were identified using the following sources: Hansen’s Northwest Plants Database 2021 USDA NRCS Plants Database 2021 Pojar and Mackinnon 2014 Cooke 1997 Lyons 1997 Taylor 1995 Guard 2010 Hitchcock and Cronquist 2014 Keying of plants using magnifying lenses and dissecting microscope was used as necessary. Determination of wetland indicator status utilized regional keys published by the United States Department of Agriculture (USDA 2012, USDA 2022). Herbaceous plants were found to be well into the growing season and in good condition within the wetlands. The wetland area was dominated by mixed facultative grasses and creeping buttercup in the herb layer. Field investigations on the property were conducted during the spring and summer seasons (May through July 2021) and February 2022. Soils were determined through field examination. Soils were dug or augured to depths of up to 18 inches using a wetland shovel and standard augur. Soil consistency was determined by feeling for grain size and texture. Soil moisture was determined at that time. In the event of saturated conditions in the hole, depth to standing water was noted. Soil color was determined through comparison of field samples with standard Munsell Color Charts (Munsell 2009). Soil was also examined for presence of mottles, gley and other indicators of anaerobic soil oxidation. Hydrologic conditions were determined through examination of topographic relief and drainage patterns. Soil moistness was determined by hand as indicated above and in the event of standing water; depth to standing water was noted. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 8 Field surveys at the property were carried out by Dr. Bradford Shea and Mr. Graham Nott during May – July 2021, by Trevor Shea during August 2021 and by Dr. Shea and Collin Boe during February 2022. These surveys included identification of plants, wetland habitats, soils and hydrology. Wetlands were determined based on the Routine On-Site Field Method used by Washington Department of Ecology and the U.S. Army Corps of Engineers. Wetlands were determined by a combination of vegetation, soil and hydrology indicators. Specific transect and quadrat points were sampled along apparent wetland edges. Locations of transects were limited to on-Site sample points, since parts of the wetland lie outside of the Site property boundaries, on an adjacent property owned by the local Home- Owner’s Association (HOA). Various points were sampled for vegetation, soil and hydrology in order to determine wetland boundaries. Appendix A contains site photographs and Appendix B contains data forms for two sample points (one wetland and one upland) from a typical area of the delineated wetland. Appendix C contains the Rating Form and attached maps. Wetlands on the Site were staked in the field by 24 and 48 inch wooden stakes, or flagged on trees or shrubs as appropriate. Wetland boundaries were indicated by use of "Wetland Delineation Boundary" flagging tape tied to the wooden stakes or trees. All boundaries were staked and/or flagged every 25-30 feet. Buffer zones near the proposed project area were mapped using GPS measurements on aerial photographs. The Stream channel was mapped near the pond removal area and the Ordinary High Water Mark (OHWN) was determined visually based on vegetation and other physical characteristics of the channel. The channel was also documented with GPS technology. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 9 3.0 WETLAND DELINEATION RESULTS 3.1 Existing Conditions The Site is currently one residential lot, located along the western edge of Hood Canal. The property lies at an elevation of approximately 60 to 100 feet above mean sea level (msl). Most of the Site near the proposed pond removal lies on a gradually sloping terrace, at 50 - 60 feet in elevation. The Site then slopes gradually downward from that terrace to the Hood Canal shoreline to the east of the property. The Site is located approximately nine (9) miles south-southeast of Quilcene, Washington. It lies along Hood Canal on the Toandos Peninsula. The Site is surrounded by a mixture of rural single-family residences and undeveloped lots (Figures 3 & 4). Jefferson County maps do not show any on-site wetlands near the pond-Site. Westech's field investigation found the existing wetland to be a Category IV emergent slope wetland (Wetland A). While the wetland is near the stream channel, it was found to drain into the stream, with no evidence of overbank flooding, and was thus considered to be a slope wetland rather than riverine. Wetland A is dominated by grasses and a groundcover of herbaceous plants (see vegetation section below). Vegetation The on-site wetland (Wetland A) consists of an emergent slope wetland (Figure 5). This wetland has been rated using the DOE Rating Form (DOE 2014). Wetland A’s vegetation is dominated by mixed grasses (Graminae) and buttercup (Ranunculus repens). This wetland is very small, consisting of an area of less than 400 square feet on the southwest side of the existing pond (designated Wetland A-1). Two other triangular areas (A-2 and A-3), totaling less than an estimated 500 square feet lie adjacent to both sides of the stream channel below (southeast of) the existing pond which is to be removed. Part of the wetland (Areas A-2 and A-3) extends onto the adjacent parcel owned by the HOA; however, these portions are not on the applicant’s property and were not delineated. The wetland areas are vegetated by grasses and buttercup, however, there is a line of Western red cedar trees to the south of the wetland (A-1). The Site is mostly a grassy field below (south and east of) Whitney Road, which is a graveled private driveway/road in this area. Other species on the property (north of the driveway) in upland areas include big-leaf maple (Acer macrophyllum), western red cedar (Thuja plicata) and Douglas fir (Pseudotsuga menziesii) in the tree layer. Dominant shrubs include thimbleberry (Ribes parviflorus), bracken fern (Pteridium aquilinum) and sword fern (Polystichum munitum). salmonberry (Rubus spectabilis), Indian plum (Oemleria cerasiformis) and trailing blackberry (Rubus ursinus). Wetland and upland plants are shown in Table 1. Source: ArcGIS Pro 2022 2022 Figure 5: Map of Critical Areas Maxar, Microsoft, Esri Community Maps Contributors, County of Kitsap, WA State Parks GIS, © OpenStreetMap, Microsoft, Esri, HERE, Garmin, SafeGraph, GeoTechnologies, Inc, METI/ Westech Company ¯WhitneyRdLegend Property Boundary Near Project Stream Test Pits Wetland Boundary A-1 A-2 A-3 Pond 0 40 8020 US Feet WW1687.6-WhitneyPondRemovalWD.Tab1/060922/mas 11 TABLE 1. LIST OF PLANT SPECIES: ON-SITE WETLANDS Common Name Scientific Name Indicator * Wetland Wetland A Curly dock Rumex crispus FAC Mixed grasses Graminae FAC Creeping buttercup Ranunculus repens FACW Upland Douglas fir Pseudotsuga menziesii FACU Western red cedar Thuja plicata FAC Big leaf maple Acer macrophyllum FACU Canada thistle Cirsium arvense FACU Red alder Alnus rubra FAC Indian plum Oemleria cerasiformis FACU Trailing blackberry Rubus ursinus FACU Snowberry Symphorocarpus albus FACU Bracken fern Pteridium aquilinum FACU Oceanspray Holodiscus discolor FACU Trailing black currant Ribes laxiflorum FACU Sword fern Polystichum munitum FACU *Indicators: UPL = Upland plant, FACU= Facultative Upland Plant (more upland than wetland), FAC = Facultative (borderline wetland plant), FACW = Facultative Wetland Plant (prefers wetland conditions), OBL = Obligate (only found in wetlands). WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 12 Soils “Hydric soils” is a name for soils commonly found in wetlands. These soils are identified mainly by morphological features such as color patterns, organic matter accumulation, or observation of inundation. A soil may be considered hydric if it is inundated (flooded or ponded) for at least one continuous week during the growing season in most years (Corps 2010). Westech staff looked for field indicators of hydric soil conditions as recommended by the Corps. If one or more of these indicators was present in the wetlands, the soil was considered hydric (Corps 2010). Westech staff examined existing NRCS soil surveys of the Site. The NRCS maps one dominant soil occupying nearly the entire Site near the wetland (NRCS 2022) which is shown in Figure 6. The one soil type mapped by the NRCS on the Site is: Kitsap Silt Loam,30 – 50 percent slopes (KtE) is a moderately well-drained soil type associated with bluffs and canyons and derived from lacustrine or marine deposits. It is a moderately deep soil which has a depth of 60 inches or more to a restrictive layer and 18 – 36 inches to water table. The soil profile has a low to moderately high ability to transmit water (0.06 to 0.20 in/hr.). This soil has a high water storage capacity in its profile (about 11.4 inches) and has no frequency of ponding or flooding. This soil type is non-hydric. Several other soil types are found to the north and on adjacent and nearby properties. These include Dabob very gravelly sandy loam 0-15 percent slopes (mainly to the north on the Site), and Alder gravelly loam 0-15 percent slopes (offsite to the northwest). These soils are all well drained, non-hydric soils. Because NRCS soil surveys do not necessarily capture small scale variation, Westech staff conducted additional field studies of the soils. To examine soils near the wetland boundary, Westech staff dug soil pits and observed soil characteristics. The location of two of these plots has been marked in the field using wooden stakes tied with blue and white striped flagging. The soil information taken at these sample points is highlighted in Table 2 and shown in Appendix B. Several additional test-pits were taken along the northern and western edges of the identified wetland near the stream channel to determine the boundary, which is along the HOA property line. The northern boundary of the wetland on the HOA parcel, which corresponds closely with the Site boundary was flagged accordingly. Figure 6. Soil Map Westech Company 2022 Source: NRCA 2022 WW1687.6-WhitneyPondRemovalWD.Tab2/060922/mas 14 TABLE 2. SITE SOILS Location/Depth Type Value/Chroma VSH-1 (Wetland A) 0-6” 6-12” 12+ Clay Clay Clayey loam 10YR 3/2, Redox 5YR 4/4 Gley 1 5/10Y, Redox 5YR 5/6 Gley 1 6/10Y, Redox 5YR 5/8 VSH-2 (Upland) 0-6” 6-12” 12+” Silty loam Silty loam Silty loam 10YR 4/3 10YR 4/3 10YR 4/2 WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 15 Field investigations found that the soils in one area near the on-site stream and existing pond did not conform to the NRCS characterization. The soil in this area (Wetland A) consists of clayey loam with redox features and underlying gley clayey loams in the wetland to depths of 18 inches. Soils in the upland test pit that was dug were found to be silty loam with some gravel which were consistent with the NRCS mapping. The wetland soil pit in Wetland A showed gleyed soils with a value/chroma of 3/2 near the surface on 10YR from 0-6 inches (redox color 4/4 on 5YR), and 5/10Y and 6/10Y on Gley 1 from 6-12 inches (redox colors range from 5/6 to 5/8 on 5YR) from 6-12 inches. These were underlain by slightly darker gleied clay loams from 12 – 18 inches. (6/10Y on Gley 1). These soils meet the U.S. Army Corps criterion for hydric soils. The soil pit taken in the upland area had a chroma/value of 4/3 (10YR) from 0-6 inches and 6-12 inches, with an underlayer of 4/2 (10YR) at greater than 12 inches. These soils did not meet Army Corps hydric soils criterion. Hydrology Numerous factors (e.g., precipitation, topography, soil permeability, and plant cover) influence the wetness of an area. The water source for Wetland A comes from direct precipitation, runoff from uphill areas surrounding the wetland including seepage from the pond for the area below the existing berm on the HOA property. Groundwater sources could also play a minor role in hydrology. Field investigations were taken during late winter (February 2022) on a dry day following a period of sporadic rain events. Upland site soils were relatively dry, however, soils in the wetland were damp to wet below the surface. The small wetland is also seasonally affected by rain events, although due to the slope, the wetland likely is not saturated for extended periods of time. Hydrological indicators observed consisted of Surface Water (A1) in the stream and evidence of periodic Saturation (A3) in the wetland. 3.2 Description of Wetlands Westech’s field investigations determined that one Category IV emergent slope wetland is located on the property (Site). Two soil test pits were taken, and the wetland buffer was determined (40 feet), although the small size of the wetland indicates it may not be regulatory. Additional test pits were taken in the southeast portion of the wetland to confirm the boundary there. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 16 Signs of previous disturbance of the area (placement of the existing pond) was found. The pond berm may have contributed to formation of the wetland below the slope of the berm. Wetland boundaries were mapped using GPS software. Figure 5 shows the wetland boundary on the Site. Wetland boundaries were determined by first noting likely areas of topographic and vegetative distinction between wetland and uplands. The Site vegetation was found to transition from upland to wetland in a relatively gradual fashion. Evidence of hydric soils was checked along the apparent wetland boundary. Westech staff noted the presence of soils marked by dark color, redox features, gley and clayey loam texture within the boundary of the wetland. A nearby unnamed stream flows southward about 20-25 feet from the eastern boundary of the small wetland (A-1) and the stream bisects the southeastern portion of the wetland (A- 2 and A-3). Vegetation in the stream riparian zone is similar to other upland areas, except in the wetland where buttercup (Ranunculus repens) is found in conjunction with mixed facultative grasses. Westech staff also noted the presence of hydrological indicators. While difficult to find, and often the least exact of the three indicators, Westech staff noted areas with evident characteristics of wetland hydrology, places where the presence of water has an overriding influence on characteristics of vegetation and soils due to anaerobic and chemically-reducing conditions. These indicators are discussed above and can also be found in Appendix B. The vegetation, soils, and hydrology of the Site are described in more detail in the previous subsections. Results of these three factors at a pair of test pits (one in the wetland, one in the upland near the wetland) are contained in Appendix B. Figure 5 shows the location of the wetlands relative to nearby features. Site photographs are shown in Appendix A. Wetland Rating forms and maps are shown in Appendix C). 3.3 Land Uses and Habitat Values Wetlands are transitional areas between upland and aquatic environments where water is present long enough to form distinct soils, and where specialized, water-tolerant plants grow. Wetlands serve a variety of functions such as transferring surface water into the ground, thereby recharging groundwater supplies. Wetlands trap water along with sediments and pollutants providing storm-water detention and filtration; mitigate flood impacts; and provide wildlife habitat. Wetland buffers are generally important because they reduce the adverse impacts of adjacent land uses on wetlands. The buffers serve to stabilize soil and prevent erosion, filter suspended solids, nutrients and toxic substances and moderate impacts of storm- water runoff. As such, buffers serve to preserve wetland functions. They also provide important habitat for wildlife living in and around the wetland. In this case, the Wetlands WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 17 are too small to be regulated or contain buffers (both portions of Wetland A together are less than 900 square feet in size, likely resulting in no required buffer under the Jefferson County Code. The property is currently zoned RR-5 and is surrounded by a mixture of undeveloped lots and rural single-family residences. The proposed project is the removal of the existing pond as required by County and State Agencies (Jefferson County 2021). This type of project is considered to be a low intensity land use since no structures are proposed. 3.4 Wetland Types and Buffers The buffer sizes to be applied at this Site are governed by the Jefferson County Critical Areas Code (JCC 2022). In order to establish buffer sizes, Jefferson County requires that wetlands be rated using the Washington State Department of Ecology's Wetland Rating System for Western Washington (WDOE 2014). Wetland ratings are based on: 1) Water Quality Function (i.e., Does the wetland have the ability to improve water quality?) 2) Hydrologic Function (i.e., Does the wetland decrease flooding and/or erosion?) 3) Habitat Function (i.e., Does the wetland provide habitat for many species?) In Washington, wetland rating categories are based on the rarity of the type of wetland, our ability to replace it, its sensitivity to adjacent human disturbances, and the functions it performs. The objective of the rating system is to divide wetlands into groups that have similar needs for protection. Wetland A was rated as a Category IV slope wetland with an overall score of 12. This wetland had a Water Quality score of 4, Hydrologic score of 3 and a Habitat score of 5. A Category IV wetland for a low intensity project within Jefferson County would be subject to a 40 foot buffer zone if it is over 1/10 acre in size, however this wetland is smaller and will likely not require a regulatory buffer. Since the Project is at the request of County and State Agencies, work in the buffer will be permitted through the JARPA Permit. Due to the location of the wetland, the buffer zone of the stream which is adjacent to the south will over-ride the Wetland buffer, requiring a 150 foot buffer for a fish-bearing stream. 3.5 Jefferson County Wetland Map Jefferson County has not mapped any wetlands on this area of the property. Wetland A is not shown on the County’s Critical Areas website. The stream is mapped by the County and has recently been reclassified as a fish-bearing stream. The stream channel, based on observed conditions on the Site, is also shown in Figure 5. The stream was modified during 2018 by placement of a small pond, which will be removed by the applicant. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 18 4.0 CONCLUSIONS AND RECOMMENDATIONS 4.1 Conclusions Wetland A is a small emergent riverine/slope wetland, dominated by scattered grasses and groundcover vegetation. The small wetland, supports emergent vegetation, extending from a line of western red cedar trees (to the west of the wetland) to the edge of the berm adjacent to the existing pond (A-1), with two other very small sections (A-2 and A-3) near the stream channel (Figure 5). The wetland was classified as a Category IV wetland. Due to its small size, the wetland may not require any buffer ( Jefferson Critical Areas Code (Chapter 18.22.730) for low intensity developments (pond removal). Access to the Site is currently provided by an existing gravel driveway (Whitney Road) which does extend to the area near the wetlands. It will not be necessary to cross the wetland in order to complete the pond removal project. The wetland will be protected by a silt fence during construction. 4.2 Recommendations Figure 5 shows locations of the mapped Wetland A and soil test pits which have been staked on the Site. The stream channel is also shown on the map. Any construction activities on the Site should be conducted outside the wetland boundary. A construction fence (silt fence or equivalent erosion control measure) should be placed between the construction area and the wetland and the stream prior to any grading or excavation for the project. Placement of the silt fences should be based on locations of critical areas (wetland and stream) as delineated and described in this report and as staked by Westech Company in the field. Grading activities should not take place after September 30 or before May 1 without all possible erosion control measures in place. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 19 5.0 REFERENCES Cooke, S.S. 1997. A Field Guide to the Common Wetland Plants of Western Washington and Northwestern Oregon. Seattle Audubon Society. Seattle, Washington. Google Earth. 2022. Online mapping software. www.googleearth.com. Imagery date July 29, 2021. Europa Technologies. Guard, J. 2010. Wetland Plants of Oregon and Washington. Lone Pine Publishing. Renton, Washington. Hansen’s. 2022. Hansen’s Northwest Native Plant Database. www.nwplants.com Hitchcock, C.L. and A. Cronquist. 2014. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Jefferson County. 2022a. Critical Areas Code website. http://www.co.jefferson.wa.us/ commdevelopment/Critical%20Areas%20Ordinance%20Web%20Files/CAOrd03- 0317-08.pdf Jefferson County. 2022b. Online Interactive Mapping website. http://www.co.jefferson.wa.us/idms/mapserver.shtml Lyons, C.P. 1997. Wildflowers of Washington. Lone Pine Publishing. Renton, Washington. Munsell Color. 2009. Munsell Soil Color Charts. Munsell Color. Grand Rapids, Michigan. Natural Resources Conservation Service (NRCS). 2022. Natural Resource Conservation Service soil survey website. http://websoilsurvey.sc.egov.usda.gov/App/HomePage.htm. Pojar, J. and A. MacKinnon. 2014. Plants of the Pacific Northwest Coast. Lone Pine Publishing Company. Redmond, Washington. Taylor, R. 1995. Northwest Weeds. Mountain Press Publishing Company. Missoula Montana. U.S. Army Corps of Engineers (USACE). 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys and Coast Region (Version 2.0). Wetlands Regulatory Assistance Program, Environmental Laboratory. Vicksburg, MS. U.S. Army Corps of Engineers (USACE). 1987/1989. Federal Manual for Identifying and Delineating Jurisdictional Wetlands. U.S. Government Printing Office. Washington, D.C. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 20 U.S. Department of Agriculture (USDA). 2022. (Natural Resource Conservation Service (NRCS) Plants Database. http://plants.usda.gov/java/ U.S. Fish and Wildlife Service (USFWS). 1988. National List of Species that Occur in Wetlands; Region 9 (and Supplement). Biological Report 88(26.9). Portland, Oregon. Washington Department of Ecology (WDOE). 2014. Washington State Wetlands Rating System for Western Washington. Publication #14-06-029. Olympia, Washington. WW11687.6-WhitneyPondRemovalWD.RPT/060922/mas 21 APPENDICIES WW1687.6-WhitneyRdPondWD.APPA/060922/mas A-1 APPENDIX A SITE PHOTOGRAPHS WW1687.6-WhitneyRdPondWD.APPA/060922/mas A-2 1) Pond to be removed, viewed from the southwest bank, showing small emergent wetland dominated by grasses and buttercup and along the southwestern edge above the pond. 2) View of pond berm looking north, showing culverts and stake along wetland boundary. WW1687.6-WhitneyRdPondWD.APPA/060922/mas A-3 3) Location of wetland boundary and proposed silt fence location to the southt of the stream. 4) Wetland boundary and silt fence location to the north of the stream WW1687.6-WhitneyPondRemovalWD.APPC/060922/mas C-1 APPENDIX C WETLAND RATING FORM AND MAPS Wetland Rating System for Western WA: 2014 Update 1 Rating Form – Effective January 1, 2015 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 ____ RATING SUMMARY – Western Washington Name of wetland (or ID #): _________________________________ Date of site visit: _____ Rated by____________________________ Trained by Ecology?__ Yes ___No Date of training______ HGM Class used for rating_________________ 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 ______________________________________ 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 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 A Whitney Road Pond Removal 02/22/22 Dr. G. Bradford Shea X 2015, 2017Slope X 543 12 IV X ArcGIS Pro X Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 2 Rating Form – Effective January 1, 2015 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 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 A C-1 C-2 N/A N/A C-4 C-3 C-5 C-5 Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 3 Rating Form – Effective January 1, 2015 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. X X X A Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 4 Rating Form – Effective January 1, 2015 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. A Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 11 Rating Form – Effective January 1, 2015 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 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 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 Total for S 1 Add the points in the boxes above 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 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 Total for S 2 Add the points in the boxes above 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 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 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 Total for S 3 Add the points in the boxes above Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page 0 3 0 3 0 0 0 0 1 0 1 X X A X Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 12 Rating Form – Effective January 1, 2015 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 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 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 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 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 Total for S 6 Add the points in the boxes above Rating of Value If score is: 2-4 = H 1 = M 0 = L Record the rating on the first page NOTES and FIELD OBSERVATIONS: A 0 0 0 0 0 X X X Wetland name or number ______ 13 Wetland Rating System for Western WA: 2014 Update Rating Form – Effective January 1, 2015 These questions apply to wetlands of all HGM classes. HABITAT FUNCTIONS - Indicators that site functions to provide important habitat H 1.0. Does the site have the potential to provide habitat? H 1.1. Structure of plant community: Indicators are Cowardin classes and strata within the Forested class. Check the Cowardin plant classes in the wetland. 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. ____Aquatic bed 4 structures or more: points = 4 ____Emergent 3 structures: points = 2 ____Scrub-shrub (areas where shrubs have > 30% cover) 2 structures: points = 1 ____Forested (areas where trees have > 30% cover) 1 structure: points = 0 If the unit has a Forested class, check if: ____The Forested class has 3 out of 5 strata (canopy, sub-canopy, shrubs, herbaceous, moss/ground-cover) that each cover 20% within the Forested polygon H 1.2. Hydroperiods Check the types of water regimes (hydroperiods) present within the wetland. The water regime has to cover more than 10% of the wetland or ¼ ac to count (see text for descriptions of hydroperiods). ____Permanently flooded or inundated 4 or more types present: points = 3 ____Seasonally flooded or inundated 3 types present: points = 2 ____Occasionally flooded or inundated 2 types present: points = 1 ____Saturated only 1 type present: points = 0 ____Permanently flowing stream or river in, or adjacent to, the wetland ____Seasonally flowing stream in, or adjacent to, the wetland ____Lake Fringe wetland 2 points ____Freshwater tidal wetland 2 points H 1.3. Richness of plant species Count the number of plant species in the wetland that cover at least 10 ft2. 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 If you counted: > 19 species points = 2 5 - 19 species points = 1 < 5 species points = 0 H 1.4. Interspersion of habitats Decide from the diagrams below whether interspersion among Cowardin plants classes (described in H 1.1), or the classes and unvegetated areas (can include open water or mudflats) is high, moderate, low, or none. If you have four or more plant classes or three classes and open water, the rating is always high. None = 0 points Low = 1 point Moderate = 2 points All three diagrams in this row are HIGH = 3points A X X X 0 1 0 0 Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 14 Rating Form – Effective January 1, 2015 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) Total for H 1 Add the points in the boxes above 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 + [(% moderate and low intensity land uses)/2] = _______% 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 H 2.2. Undisturbed habitat in 1 km Polygon around the wetland. Calculate: % undisturbed habitat + [(% moderate and low intensity land uses)/2] = _______% 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 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 Total for H 2 Add the points in the boxes above 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 Rating of Value If score is: 2 = H 1 = M 0 = L Record the rating on the first page A X 1 2 1 3 0 4 X 0 X 13 1 0.5 13.5 28 72 36 64 X Wetland name or number ______ Wetland Rating System for Western WA: 2014 Update 15 Rating Form – Effective January 1, 2015 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. A Source: ArcGIS Pro 2022 2022 Figure C-1: Map of Cowardin Plant Classes Maxar, Microsoft, Esri Community Maps Contributors, County of Kitsap, WA State Parks GIS, © OpenStreetMap, Microsoft, Esri, HERE, Garmin, SafeGraph, GeoTechnologies, Inc, METI/ Westech Company ¯WhitneyRdLegend Property Boundary Near Project Stream Emergent Open Water 0 40 8020 US Feet Source: ArcGIS Pro 2022 2022 Figure C-2: Map of Hydroperiods Maxar, Microsoft, Esri Community Maps Contributors, County of Kitsap, WA State Parks GIS, © OpenStreetMap, Microsoft, Esri, HERE, Garmin, SafeGraph, GeoTechnologies, Inc, METI/ Westech Company ¯WhitneyRdLegend Property Boundary Near Project Stream Permanently Flooded Saturated Only 0 40 8020 US Feet Source: ArcGIS Pro 2022 2022 Figure C-3: Map of 150' from Wetland Maxar, Microsoft, Esri Community Maps Contributors, County of Kitsap, WA State Parks GIS, © OpenStreetMap, Microsoft, Esri, HERE, Garmin, SafeGraph, GeoTechnologies, Inc, METI/ Westech Company ¯WhitneyRdW h itn e y R d Legend Property Boundary Near Project Stream Wetland Boundary A-1 A-2 A-3 Pond 150' Wetland Boundary 0 60 12030 US Feet Source: ArcGIS Pro 2022 2022 Figure C-4: Map of 1 KM Polygon County of Kitsap, WA State Parks GIS, Esri, HERE, Garmin, SafeGraph, GeoTechnologies, Inc, METI/NASA, USGS, Bureau of Land Management, EPA, NPS, US Census Bureau, USDA, Westech Company ¯PayneRdCoyleRdCoyleRdJohnsonRdCoyle Legend Property Boundary Near Project Stream 1 KM Polygon Accessible Low/Moderate Accessible Undisturbed Low/Moderate Undisturbed 0 0.25 0.50.13 Miles Figure C-5: 303d List Screenshot (Whitney Road) Westech Company 2022 Source: Washington State Department of Ecology 2022 Project Location