Loading...
HomeMy WebLinkAboutWetland Delineation part 1 901112046WESTECM COMPANY Environmental Consulting - Site Permitting WETLAND DELINEATION 187 COVINGTON DRIVE CHIMACUM, WASHINGTON 98325 ASSESSOR'S PARCEL # 901-112-046 JEFFERSON COUNTY, WASHINGTON W). June 2016 G. Bradford Shea, Ph.D. and Charles Tanner Submitted to: JEFFERSON COUNTY DEPARTMENT OF COMMUNITY DEVELOPMENT 621 Sheridan Street Port Townsend, Washington 98368 %(�So (Al Submitted by: WESTECH COMPANY P.O. Box 2876 Port Angeles, Washington 98362 P►v� a �'oco p11 COIN 3010 fI�S P.O. Box 2876 - Port Angeles, Washington 98362 - Telephone: (360) 565-1333 email: brad@westechcompany.com WETLAND DELINEATION 187 COVINGTON DRIVE CHIMACUM, WASHINGTON 98325 ASSESSOR'S PARCEL # 901-112-046 JEFFERSON COUNTY, WASHINGTON June 2016 G. Bradford Shea, Ph.D. and Charles Tanner Copyright 2016 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 P.O. Box 2876 Port Angeles, Washington 98362 CONTENTS CHAPTER/SECTION PAGE NO. 1.0 INTRODUCTION 1 2.0 METHODS 6 3.0 WETLAND DELINEATION RESULTS 10 3.1 Existing Conditions 10 3.2 Land Uses and Habitat Values 16 3.3 Wetland Types and Buffers 17 3.4 Jefferson County Wetland Map 17 4.0 CONCLUSIONS AND RECOMMENDATIONS 18 4.1 Conclusions 18 4.2 Recommendations 18 5.0 REFERENCES 19 FIGURES Figure 1 — Location Map 2 Figure 2 — Vicinity Map 3 Figure 3 — Parcel Map 4 Figure 4 — Aerial Map with Wetland Boundaries and Buffers 5 TABLES Table 1 — List of Plan Species: On -Site Wetland 12 Table 2 — Dominance Test Using 50/20 Rule for Plant Section 13 Table 3 — Site Soils 15 APPENDICES 21 Appendix A — Site Photographs A-1 Appendix B — Data Forms B-1 Appendix C — Rating Forms C-1 WW1 479CovingtonRd.TOC/062316/tjs i 1.0 INTRODUCTION The Property (Site) is a 5.3 acre parcel located at 187 Covington Drive in Chimacum, Washington. The Property is listed as Assessor's Parcel #901-112-046 and is located in the Northwest Quarter of Section 11, Township 29 North, Range 1 West (Figures 1, 2, 3 and 4). The property owners are listed as John G. Bellow and Roxanne Hudson at P.O. Box 420 in Chimacum, Washington 98325. The property is located in northeastern Jefferson County between State Route 19 and Chimacum Road. The Site is the location of the Spring -Rain Farm and Orchard, a multi- product organic farm. The Site covered in this wetland delineation includes an agricultural field, home, structures for retail and storage, a gazebo and a cleared parking area. The adjacent site to the east was also examined where the on -Site wetland extends onto it. The large Site includes agricultural fields and numerous structures related to farming. The property owner intends to place a single family residence and septic system on the Site south of the agricultural field. Mr. Bellow contracted with Westech to delineate and rate the wetland and determine the buffer required under the Jefferson County Codes (Jefferson County 2014b). Chapter 2.0 describes the Methodology used to conduct this Wetland Delineation. Chapter 3.0 contains results of the Wetland Delineation. Field investigations of the wetland were conducted by Mr. Charles Tanner during May 2016. Dr. Bradford Shea reviewed photographic and other site documentation. The wetland was classified as a Category II wetland, requiring a 110 foot buffer for projects of this size. The Wetland boundaries have been marked in the field. WW 1479CovingtonRd. RPT1062316/tjs co co T T Q N N F go W- 61:10 tv lot. + u j �+r .• co m T' T- C:) N 70 C >N L Q M t0 (D Q R 2) LL 2.0 METHODS The Wetland was delineated and rated according to procedures required by the Jefferson County Code (JCC). The JCC requires that wetlands be identified and delineated according to procedures in the 1997 Washington State Department of Ecology's (WDOE) Washington State Wetlands Identification and Delineation Manual (Ecology Publication No. 96-94 or as amended) (JCC 18.22.300). Because the State of Washington now defers to the U.S. Army Corps of Engineers' (Corps) wetland delineation methods, this wetland was delineated according to the Corps' Regional Supplement for the Western Mountains, Valleys and Coast Region (Corps 2010). The Wetland was rated by the methods outlined in the Washington State Department of Ecology's Wetland Rating System for Western Washington (WDOE 2014). The following methods are drawn from the Corps' Supplement for the Western Mountains, Valleys and Coast Region (Corps 2010). The Corps' manual defines wetlands as those "areas that are inundated or saturated by surface or ground water at a frequency and duration sufficient to support, and that under normal circumstances, do support, a prevalence of vegetation typically adapted for life in saturated soil conditions." Wetlands are defined by the following three criteria: 1. Ve c-tatiarl: Prevalent vegetation consisting of macrophytes adapted to areas with wetland hydrologic and soil conditions. 2. Hydric soils: Soils that are histosols, in aquic suborders or that show certain characteristics associated with poor draining, very poor draining or ponding for a long duration during the growing season. 3. Hydrology: Evidence that the area is inundated or saturated to the surface between 5 and 12.5 percent of the growing season in most years. Evidence of at least one wetland indicator from each of these three categories is generally required to identify an area as a wetland. Preliminary data gathering consisted of the examining U.S. Geological Survey (USGS) maps, county parcel, wetlands, and topographic maps, aerial photographs and Natural Resources Conservation Service (NRCS) soil surveys. Because these sources were insufficient to mare a determination, additional information on site vegetation, soils and hydrology was unavailable, and the Site did not appear to have the complexity to require a comprehensive determination, a Routine Determination with Onsite Inspection was used. WW1 479CovingtonRd. RPT/062316/tjs 6 Because the wetland on -Site was approximately five acres, the procedure for "Areas Equal to or Less Than 5 Acres in Size" was used. The wetland and its boundaries were initially estimated by noting likely areas of topographic and vegetative distinction between wetlands and uplands. The routine method for delineating wetlands begins with the identification of plant communities, as uplands and wetlands are often occupied by different assemblages of species determined by combinations of environmental influences. These plant communities were identified and evaluated for the presence or absence of hydrophytic vegetation. The wetland indicator status of the dominant species is used to determine the presence of hydrophytic vegetation. Each species has an indicator status defined according to the U.S. Department of Agriculture (USDA) (USDA 2012). A species indicator status refers to the relative frequency at which the species occurs in jurisdictional wetlands. Wetland plant species (OBL, FACW and/or FAC) must constitute greater than 50 percent of the dominant vegetation to meet Department of Ecology (DOE) criterion for hydrophytic vegetation (Corps 2010). Because non-dominant plants in the wetland were scattered irregularly throughout, small transects could not be utilized to estimate percent coverage. Accordingly, a combination of on -Site visual inspection and aerial maps were used to estimate percent coverage. These estimates were used to conduct a dominance test with 50/20 selection as described in the Corps manual (Corps 2010). Wetland plants were primarily identified in the field, with subsequent collection and keying when necessary. Plants were identified using the following sources: Pojar and MacKinnon 1994 (Updated 2004) Guard 1995 Cooke 1997 Hitchcock and Cronquist 1973 Lyons 1997 Taylor 1995 Keying of plants using magnifying lenses and dissecting microscope was used as necessary. Determination of wetland indicator status utilized regional keys published by USDA. This indicator replaced the previous U.S. Fish and Wildlife key in June 2012 (USDA 2012). Areas with plant communities dominated by hydrophytic vegetation were then evaluated for wetland hydrology and hydric soils. Wetland hydrology refers to "all hydrological characteristics of areas that are periodically inundated or have soils saturated to the surface at some time during the growing season." These are areas with evidence that the presence of water has an overriding influence on the characteristics of vegetation and soils due to anaerobic and reducing conditions (Corps 2010). An area has wetland hydrology if it is inundated or saturated to the surface continuously for at least five percent (5%) of the growing season in most years. The level of inundation can range M1479CovingtonRd. RPT/062316/tjs 7 from permanently inundated to irregularly inundated/saturated. The level of inundation/saturation can be impacted by precipitation, topography and soil characteristics. Hydrology is often the least exact of the parameters used to delineate wetland edges because it is the most ephemeral and leaves the least reliable traces in the landscape after water tables or floods have receded. Therefore, indicators of wetland hydrology are sometimes difficult to find in the field. However, it is essential that a wetland area is periodically inundated or has saturated soils for a sufficient duration during the growing season. Based on Corps recommendations, Westech staff noted areas with evident characteristics of wetland hydrology. In general, places with wetland hydrology show evidence that the presence of water has had an overriding influence on characteristics of vegetation and soils due to anaerobic and chemically -reducing conditions. Hydrologic conditions were determined through examination of topographic relief and drainage patterns. Soil moistness was determined by hand and, in the event of standing water, depth to standing water was noted. Field indicators of wetland hydrology include such features as watermarks, historic records, and visual observation of saturated soils or inundation. Evidence of hydric soils was checked along the apparent wetland boundary. These are soils that formed under conditions of saturation, flooding or ponding long enough during the growing season to develop anaerobic conditions in the upper layers. These soils are identified in the field mainly by morphological features such as color patterns, organic matter accumulation, and observation of inundation, Soils were sampled to depths of up to 15-24 inches using a wetland shovel. 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 1994). Soil was also examined for presence of redox features, gley or other indicators of anaerobic soil oxidation. If one or more of these indicators was present in the wetlands, the soil was considered hydric. The wetland was determined based on the Routine On -Site Field Method used by the Corps using a combination of vegetation, soil and hydrology indicators. The boundaries of the wetland were determined by first mapping each plant community area as wetland or non -wetland. The general wetland boundary was determined by the interface of these two mapping units. These boundaries were confirmed and the boundary locations narrowed down by sampling specific transects along wetland boundaries. Various points were sampled for vegetation, soil and hydrology in order to pinpoint the location of wetland boundaries. Appendix B contains data forms for two sample points (one wetland and one upland) from a typical area in the delineated wetland. VVW1479CovingtonRd.RPT/062316/tjs Wetland boundaries were indicated in the field by the use of pink "Wetland Delineation Boundary" flagging tape tied to the wooden stakes (24" or 48") or to trees as appropriate. All boundaries were staked and/or flagged every 25-30 feet. Buffer widths were determined based the Jefferson County Critical Areas Code and marked in the field with orange and black tape. Soil test pits were indicated by orange/white diagonal flagging and stakes containing the test pit number. Site visits were carried out in May by Mr. Charles Tanner and Mr. David Parker and in September by Mr. Tanner and Dr. G. Bradford Shea. This report was carried out jointly by Mr. Tanner and Dr. G. Bradford Shea. Exploration of the Property involved noting Site characteristics such as hydrology and soil conditions. A botanical study involving identification of the plant species found growing on the Site was also conducted. The wetland edge was delineated and photographic documentation was acquired (Appendix A). Measurements for mapping purposes were made using a fiberglass tape measure. WVV1479Covington Rd, RPT/062316/tjs 9 3.0 WETLAND DELINEATION RESULTS 3.1 EXISTING CONDITIONS This approximately 5.3 acre parcel is located in northeastern Jefferson County, north of Chimacum and southwest of Port Hadlock. The property lies on Covington Road between State Route 19 and Chimacum Road. The parcel sits at an elevation of about 100 feet above mean sea level (msl). The Site is the location of the SpringRain Farm and Orchard, a multi -product organic farm. The Site includes an agricultural field, home, structures for retail and storage, a gazebo and a cleared parking area. The adjacent site to the east includes agricultural fields and numerous structures related to farming. The parcel has been cleared of trees, containing mostly agricultural fields, herb layers adjacent to these areas, and wetland vegetation. The surrounding area consists of a mix of residential, agriculture and forested parcels. The parcels to the immediate west and south include forested areas, while a larger forested area lies further east of the Site. The Property is zoned as Open Space Agriculture (A). Adjacent parcels are zoned as Rural Residential and Parks and Recreation. Chimacum Creek, a Type F fish -bearing stream, runs across the parcel to the immediate east of the project Site. Wetland Westech's field investigation determined that a wetland is located on northern end of the Site. This depressional wetland appears to extend onto the parcels to the north and extends onto the adjacent parcel to the east. 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 abrupt fashion. Evidence of hydric soils was checked along the apparent wetland boundary. Westech staff noted the presence of a mucky mineral soil in boundary areas of the wetland. 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. Observed hydrologic indicators included saturation in the root zone and a water table at 10 inches (See Figure 4 and Appendix B). WWI 479Covington Rd. R PT/062316/tjs 10 The vegetation, soils, and hydrology of the Site are described in more detail in the following subsections. Results of these three factors at two test pits (one in the wetland, one in the upland area) are contained in Appendix B. Figure 4 shows the location of the wetland relative to nearby features. Site photographs are shown in Appendix A. Vegetation Table 1 lists wetland vegetation and the upland vegetation adjacent to the wetland boundary. The observed on -Site did not have a tree layer, though the wetland area on the adjacent property to the north appears to have a tree layer, and possibly a shrub layer. This could not be confirmed from the Site, The tree/shrub layer in the off-site wetland appeared consist at least in part of willow (Salix spp). The discussion below is based on observations taken in a 10 foot by 10 -foot area near the soil pit and observations of wetland plants observable from the Site. The observed area on -Site had only an herb layer. This consisted of a large area, frequently inundated, area dominated by Baltic rush (Juncus balticus) and a disturbed area adjacent to the rush -dominated field. The latter included an area covered in wetland and upland vegetation (below) and an area used for agricultural crops. Because vegetation in the crop field had been removed, vegetation in the area adjacent to the wetland was used to estimate the portion of the agricultural use area included in the wetland (Corps 2010). The vegetated wetland adjacent to the upland area had only an herb layer. Dominant vegetation in this area included Baltic rush (FACW) and bitter dock (Rumex obtusifolius, FAC) Tables 2 shows the results of a dominance test conducted following the guidelines of the Army Corps (Corps 2010). This area met U.S. Army Corps criterion for wetlands. The adjacent upland area was dominated by Canada thistle (Cirsium arvense, FACU). Remaining non-dominant plants in this area included three FACU and two FAC plants. This area did not meet Army Corps criterion for wetland vegetation (Table 2). 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). WW 1479Covington Rd. R PT/062316/tjs 11 TABLE 1. LIST OF PLANT SPECIES: ON-SITE WETLAND Common Name` `.Scientific'Name Indicator* Wetland Bitter dock Rumex obtusifolius FAC Curly dock Rumex cris us FAC Creeping buttercup Ranunculus repens FACW Baltic rush Juncus balticus__ FACW Common horsetail Equisitum arvense FAC Canada thistle _ Cirsiurn arvense FACU Redtop A rostis gigantea FAC Cattail Typha latifolia OBL Upland Canada thistle Cirsium arvense FACU Bitter dock Rumex obtusifolius _ FAC Redtop A rostis gigantea FAC Red clover Trifolium pratense FACU creeping b—uttercup Ranunculus re ens FACW Oxe e daisy Leucanthemum vul are 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). WWI 479CovingtonRd.Tab1/062316/tjs 12 TABLE 2. DOMINANCE TEST USING 50120 RULE FOR PLANT SELECTION STRATUM SCIENTIFIC NAME WETLAND ABSOLUTE DOMINANT? INDICATOR PERCENT Rumex obtusifiolius STATUS COVER Yes _ Herb FAC 40 Juncus balticus FACW 20 Yes Ranunculus repens FACW 15 No Agrostis gigantea FAC 5 No Equisitum arvei7se FAC 5 No Rumex crispus FAC 5 No Typha latifolia OBL 5 No Cirsium arvense FACU 2 No 95% _ Total cover 50/20 Thresholds: 50% total cover = 47.5 20% total cover= 19% Total number of dominant species across all strata = 2 Hydrophytic Vegetation Percent of dominant species that are OBL, FACW or FAC = 100% Determination Therefore, the community is hydrophytic by Indicator 2 (Dominance Test) WW1 479CovingtonRd/062316/tjs 13 Westech staff examined existing NRCS soil surveys of the Site. The NRCS maps four soils on the Site (NRCS 2016). The four soils mapped by the NRCS on the Site include: Hoy/us gravelly avelly sandy loam, 0 to 15 percent (HvC) is a somewhat excessively drained soil associated with terraces and derived from glacial outwash. It has a depth of more than 80 inches to the water table and a high to very high capacity to transmit water (5.95 to 19.98 in/hr). This soil has a low water storage capacity (about 1.7 inches) and no frequency of ponding or flooding. Tisch silt loam Th is a poorly drained soil associated with volcanic ash, alluvium and diatomaceous earth. It has a depth of more than 80 inches to the water table, a moderately high capacity to transmit water (0.20 to 0.57 in/hr) and a very high capacity to store water in its profile (about 24.8 inches). This soil ponds frequently, but has no frequency of flooding. Wa ato silty clay loam (Wa) is a poorly drained soil associated with depressions and derived from glaciofluvial and/or marine deposits. It has a depth of 0 inches to the water table, a moderately high capacity to transmit water (0.20 to 0.57 in/hr) and a high water storage capacity in its profile (about 9.9 inches). This soil frequently ponds and floods. Semiahmoo muck Se; is a very poorly drained soil associated with depressions and derived from herbaceous organic material. This soil has a depth of 0 to the water table and a moderately high capacity to transmit water (0.20 to 0.57 in/hr). This soil frequently ponds, but has no frequency of flooding. Because NRCS soil surveys do not necessarily capture small scale variation, Westech staff conducted additional field studies of the soils. To examine soils in the wetland boundaries, Westech staff dug soil pits and observed soil characteristics. The location of two soil pits examined by Westech is shown in Figure 4. These VSH plots are located within representative upland and wetland areas. The location of these plots has been marked in the field using wooden stakes tied with orange and white striped flagging. The soil information taken at these sample points is highlighted in Table 3. Westech observed both muck and silt loam soils similar to those mapped by the NRCS. A soil pit in the wetland exhibited soils with a value/croma of 2/1(10YR) to a depth of 10 WW1479Covi ngtonRd, RPT/062316/tjs 14 TABLE 3. SITE SOILS Locgar lQeatlfti T I ValuefCll7roma Redox Galvrlq% Plot # VHS -1 (Wetland) 0-9 Mineral muck 2/1 (1 :KR2 none 9-16 Non -soil compact organic matter — Plot # VHS -2 (Upland) 0-15 _ Silt loam2/2 10( YR) none 15-20 Sand loam 2/2 (10YRI none WW1479CovingtonRd.Tab3/062316/tjs 15 inches. These soils were a mineral muck and meet U.S. Army Corps criterion for Black Histic soils. Below these soils was a layer of dense and only partially decomposed non - soil organic matter. A soil pit in an upland area exhibited soils with a value/chroma of 10YR 2/2 to a depth of about 20 inches These soils were silt loams in the upper layer and sand loams in the lower layer. These soils did not meet U.S. Army Corps criterion for hydric soils (Corps 2010). Hydrology Numerous factors (e.g., precipitation, topography, soil permeability, and plant cover) influence the wetness of an area. The water source for this wetland comes from a combination of direct precipitation, runoff from uphill areas surrounding the wetland and groundwater sources. The wetland may also receive some water from Chimacum Creek, a Type F stream that runs across the parcel to the east of the project Site. Hydrologic indicators observed in a soil pit in the wetland included saturation in the root zone and a water table at 10 inches. The soil pit dug in the upland area had no standing water to 20 inches (Corps 2010). 3.2 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 stormwater detention and filtration; mitigate flood impacts; and provide wildlife habitat. Wetland buffers are 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 stormwater runoff. As such, buffers serve to preserve wetland functions. They also provide important habitat for wildlife living in and around the wetland. Agricultural uses occur on the property uphill from and to the east of the wetland. Chimacum Creek, a fish -bearing (Type F) creek, runs across the adjacent parcel to the east. Chimacum Creek provides habitat for a summer chum run. The proximity of the wetland to the creek and agricultural activity makes it important for water quality and fish habitat. The on-site wetland may also mitigate flooding. This wetland could provide habitat for amphibians because of the presence of thick -stemmed vegetation in standing water during part of the year. VVW1479CovingtonRd. RPT/062316/tjs 16 3.3 WETLAND TYPES AND BUFFERS The buffer sizes to be applied at this Site are governed by the Jefferson County Critical Areas Code. 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 2006). In this system, 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. The on -Site wetland was classified as a Category II depressional wetland with an overall score of 22. This included a water quality score of 8 and hydrologic/flood control and habitat scores of 7 each (See Wetland Rating Forms in Appendix B). The Jefferson County Codes require 110 foot buffers to protect these functions in areas of moderate use projects (such as single family residences). Wetland buffers were flagged in the field with black/orange striped flagging. A small agricultural building, storage/work structures and an agricultural use area are located in the buffer zone. 3.4 JEFFERSON COUNTY WETLAND MAP Jefferson County maps a wetland on the northern and central portions of the Site (Jefferson County 2016). Westech observations confirmed the wetland on the north end of the Site. However, vegetation, soil and hydrology patterns on the Site indicate that area mapped in the central part of the parcel is not a wetland (See Figure 4). WW1 479CovingtonRd. RPT/062316/tjs 17 4.0 CONCLUSIONS AND RECOMMENDATIONS 4.1 CONCLUSIONS The wetland was identified and flagged on the Site. Figure 4 shows the location and extent of the mapped wetland. This is a depressional wetland and has been rated according to state guidelines and classified as a Category II wetland, Jefferson County requires buffer widths of 110 feet for this type of wetland and the proposed intensity of land use for the Site. Wetland boundaries have been marked in the field. 4.2 RECOMMENDATIONS A potential building area is located outside the wetland buffer on top of a hill south of the wetland and agricultural areas. Westech recommends that all construction activity for the new home take place outside the buffer zone. Westech also recommends that the County obtain GPS points of the wetland boundary so that it accurately reflected in County maps. WW1479CovingtonRd.RPT/062316/tjs 18 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. 2016. Online mapping software. www.googleearth.corn. Guard, J. 1995. Wetland Plants of Oregon and Washingto . Lone Pine Publishing. Renton, Washington. Hitchcock, C.L. and A. Cronquist. 1973. Flora of the Pacific Northwest. University of Washington Press. Seattle, Washington. Jefferson County. 2016x. Critical Areas Code website. http:/Iwww.co.jeffe1-son.wa.us/ cornrrdevelo meat/Critical%o20Areas°Io2OOrdinance°IO2OWeb%2OFileslCAOrdO3- 0317-08 pdf Jefferson County. 2016b. 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. 1994. Munsell Soil Color Charts. GretagMacbeth, New Windsor, New York. Natural Resource Conservation Service (MRCS). 2015. Hydric Soils. http://soils. Usda.gov/use/hydric/. Pojar, J. and A. MacKinnon. 1994 (Updated 2004). 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 Corp of Engineers (Corps). 2010. Regional Supplement to the Cors of Engineers Wetland Delineation Manual: Western Mountains, Valleys and Coast Regions (Version 20). May 2010. Washington, D.C. U.S. Department of Agriculture (USDA). 2012. 2012 National Wetland Plant List. http:/f p_I_ants. usda._gov/core/wetland Search. Washington Department of Ecology (WDOE). 2014. Washington State Wetlands Rating System for Western Washington. Thomas Hruby. Publication #14-06-029. Olympia, Washington. VVVV1479CovingtonRd. RPT/062316/tjs 19 Washington Department of Ecology (WDOE). 1997. Washington State Wetlands Identification and Delineation Manual. Publication #. 96-94. Olympia, Washington. WW1479CovingtonRd. RPT/062316/tjs 20 APPENDICIES WW14MovingtonRd. RPT/062316/tjs 21 APPENDIX A SITE PHOTOGRAPHS WW1479CovingtonRd.APPA/062316/tjs A-1 1) Site entry and organic farm. 2) Wetland areas near organic farm fields. WW1479CovingtonRd.APPA/062316/tjs A-2 Lit 17 3) Shrub wetland area on west side of wetland area. ii T k. ► �, r h { 1 1 i � l b� �y w .i �• I S t Y^. 'J 1 1 l� •,'t;�� i�, !�' ��.�1,+ri. S` �`C y�` . ..;ice 4) Upland area outside of wetland buffer zone. Proposed for home -site and drain field. WW1479CovingtonRd.APPA/062316/tjs A-3 APPENDIX B DATA FORMS WWI 479CovingtonRd.APPB/062316/tjs B-1 WETLAND DETERMINATION DATA FORM -- Western Mountains, Valleys, and Coast Region �7L+r tl� t 4,J-,' 1_� I Pro)ecUSitc: _ n + _ Cily,Counly: .l' )r?�•(C:`� T Sampling Date: r i J Applicant/Ownor- f C:•I ) (j l (! stat() .1 Sampling Point: Hydric Soil Present? 1 Invesll 3101 S : �.. L't i aC l. t L� •'! r (' i g� O �W __- -- Section, 1'ovnlship, Range: FACW species _ Landform (hillslnp0, (ciracc cic.j: Vi`• C. I ocol relief (concave, convex, none); <' (3 _.... . _. Slope I%). _ r` --- - Subregion �_. I.RR g ( ) .. .......�-� ,:....:.._';�._._ ,..... I.al: Long:. -- - Oalun,:.. _ ... ._ Soil Map Onit Namc: , _ . -. _ - _ f;enmrks. p + ( NWI classification: Are climatic 1 hydr�ol�ogic condilions on the site typical fort his time of yrfar? Yes X _ No (If no, explain in Remarks) Rte Vogolation +?C, Soil,_, - ,_, or Hydrology,-_ _,,,-•, _ significantly disturbed? 1 / Arc "Normal Circumstances' present'? Yes No Arc Vegetation . ., Soil - or liydrology naturally problematic.? (If needed, explain any answers in Romarks.) SUMMARY OF FINDINGS -- Attach site map showing sampling point locations, transects, important features, etc I lydrophyiic Vegetation Present? yea No , ..,, - .. C.• -._ (NB) Prevalence Index worksheet: -Total Cover of: Hydric Soil Present? Yes No FACW species _ If, file Sampled Area FAC species Wcll.)nd Hydrology f rusanl7Yes FACU species _ No UPI. species within a Welland? Yes No Column Totals:. f;enmrks. p + ( ;V .. _1 It VEGETATION — Use scientific names of plants. kk ' Absolute °r Dominant Indicator Dominance nest wotf(sheet: � Frcc Slralurr. (NIDI size: e .- ) Co .. e.....y9+:.. �e ? l SPecie5: .5..alus. - N umber of f.]nrnu,ant Species That Are 013L, FACW, or FAC: (A) Total Number of Dominant 3 Species Across All Strata: (B) Sopiirg!51)10 Slratu,lh (Plol sire: _ jk." 1. 3 TnIal Cover -,Total Cover - -- l;v)jY.G i(3rb 3irrtulrl (I r101, �sper . v_"� � � �.� .) :i � ti,�t � �•��.•�'.lc�� r�•!.. I.ivt J%u �.� �`.11/, � t:' �'� f !�,rc.:i+ 51.- ¢,•'4.5,1{r4/.�`-ij+� L'�! 4.4: J6 !p�i`4!,•+� ,«. .. �... .... �7�� l •'`I �. .. F 10. 1. j .. q. 11. - 7 Total Covor - Wo,,:Wy Vint; Str.alurn (Plot situ... Percent of Dominant Species r Thal Are 0131_, FACW, or IAC: ..,, - .. C.• -._ (NB) Prevalence Index worksheet: -Total Cover of: _ ...MulliUIL✓JY....-- Oi31_ species x 1 ZI FACW species _ x 2 < ........ ......- FAC species x 3 FACU species _ x 4 UPI. species X5 Column Totals:. (A) (E3) PiLvalenco Index B/A •• Hydrophytic Vogt talion Indicators: 1 • Rapid Test for Hydrophytic Vegetation 2 - Dominance Test is >50% _ 3 . Provalonce Index is 53.0' 4 - Morphological Adaptations' (Provide supporting data in Remarks or on a ;oparato sheet) 5 - Welland Non -Vascular Plants' Problematic Hydrophylic Veaelalion' (Explain) Indicators of hydric soil and welland hydrology mull be prosonl, unlOss disturbed or problematic 1,._..-._ . ....... _.._ Hydrophytic P. Vegetation ToIni Cows Present? (% Barr; Ground in Herb Stratum-- � Remarks Yes No --•1a,— US Army Corps of I5r,yinoers Western Mountains, Valleys, and Coast • Version 2.0 SOIL Sampling Point:_ Profile Description: (oescrilbo to the depth needed to document the indicator or contirm the absence of indicators.) Oupth matrix Redcox 1. .9att.ifos (moi!() % 1�y Color (11,oisl) �o Pe roxiure I - ype: C;--Concmllration, 0:: Depletion, RM -Reduced Matrix, CS Covered or Coated Sand Grains. ;'Location: M:-'IMI,'ix- - . Hydric'S'oil Indicators: (Applicable to all LIRRs, unless . otherwise . . . - I noted.) Indicators for Problematic Hydri c Soils': Hislosol (Al) Sandy Redox (Sb) 2 cm Muck (A10) f fislic Epipedon (A2) Shipped l"Antrix (SG) Red Parent Material (11-21 Black I lislic (A3) Loamy Mucky Mineral (I"i) (except MLIRA 1) Very Shallow Dark Surface ( f F12) hydrogen Sulfidt, (AA) Lonmy GI(iy(-,(J Mnlrix (1 -*2) Other (Explain in Remarks) DopleCd Below Dark Surface (Al 1) Depletue Matrix it 3) Water Marks (111) Thick Dark Surface (Al2) Redox Dark SurIkico W-61 '111dicito", of hydrophylic vegetaliol) ano Sturdy Mucky Mineral (Sl) Depleted Dark Surface (F7) welland hydrology must be present, Sandy Gleyed Matrix (54) Rodox Dvprossi�uns (Fb) unless disturbod or problematic. . Restrictive-v'u-TLay, or (if P es nt) I Shallow Aquitard (03) IF011 DUIX)SIlS (155) ype: I'AC-Noutral Test (05) Surface Soil Cracks (136) Depth (iochos):. Raised Ant Mounds (DG) (LRIZ A) Hydric Soil Present? Yes No Remarks: Frost. -Heave Hummocks (D7) HYDROLOGY Wetland Hydrology Inrlivatom. tor Seqppdpry Indicators more required) Surface CC Water (Al) Water-Slained Leave, (B9) (except Water -Stained I oavos (139) (MILRA 1, 2, High Water Table (A2) MLRA 1, 2, 4A, and 4B) 4A, and 4B) Saturation (A3) Sall Crust (1311 ) - Drainage Patterns (1310) Water Marks (111) Aquatic Invertebralos (1313) Dry-Soasor. water'l-able (02) Sediment Deposits (62) Hydrogen SUlfide. Odor (C1) Saturation Visible on Aerial Imagery (C9) Drill Deposits (133) Oxidized Rhi/osphores, along I iving Roots (C3) Geomorphic Position (02) Algal Met or Crust (1311) Presence of Reduced Iron (C4) Shallow Aquitard (03) IF011 DUIX)SIlS (155) Recent hon Reduction in I illod Soils (CG) I'AC-Noutral Test (05) Surface Soil Cracks (136) Stunted or Stressed Plants (DII) (LRR A) Raised Ant Mounds (DG) (LRIZ A) Inundation Visible on Aerial Imagery (B't) Othow (Explain in Romarks) Frost. -Heave Hummocks (D7) Sparsely Vegetated Concave Surface ((218) rioid Observation-$: sorfacc, Water Present? Yes No Deplfl (mr.11(ts): 'Atator Table, Prosonl^, Yes No Depth (lfthas)'­ SalurdLiOrl Preswil? Yns No- DL py, (1,juhus): Wuthnd Hydrology Present? Yes— NOA (Includes capillary Doscriba Recorded Data (5tiearn gauge, monitoring well, aerial photus, previous inspections), it avpllablo: Remarks: US Army Coips of Enginuers Western Mountains, Valleys, and Coast- Version 2.0 WETLAND DETERMINATION DATA FORM .-Western Mountains, Valleys, and Coast Region LA cily/counly: Sampling Date: Applicant/Owner-) State: Sampling Point:.V5 Invosligalor(s): K, k t LJ", L, L I I. I u.. Section, Township, Range: I antlforr)) (hillslope, terrace. etc.): L, Local relief (coricavc, convex, none): __jA Slope A SLibregion (I-RRy Lat:, DalLim:__ Soil Map Unit NamoNWIclassification: .... . .. Arc., dirriotic I hyd(ologNo (If no, explain in Remarksic, conditions on lliesiln twical for Ihis time of year? Yr,,s Arc Vegetation or I­fydioIoqy____. significantly diY.urbod? Are "Normal CirWrnstai ices" present'? Yes Are V(%( , Soil or Hydrology naturally pioblorria[ic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS — Attach site map showing sampling point locations, transects, important features, etc. I iydrophytic; Vegetation Presonl? JI Yes___.v No Hydric Soil Presunil? Yes X No nn Is the Sampled Area Wellario Hydrology Present? Yos No within a Wetland? Yes No cd T elh? VEGETATION — Use scientific names of plants. AA Absolute Don . i . boruir'sanov Test . worksheet: 1!f7�q �5.ipawll�l 01101 sil.(): 0/4 Cqvq( sr Total cover tVMOY Vif1P.$!rk)KKl! (Plot site: Number of Dominant Species That Are OBL. FACW, or FAC- pix (A) Total Number of Dominant '.. I Species Across All Strata: 1�7" . .. (1-3) Percent of Dominant Species Thal Are OBL. TACK or FAC: (AIR) Pro v­a'Ic'i ice'l-n"d- o- x wo r lk sihi Q a t ovolivyAyz - .Yqc� Cover 0131. species -,. . - . x I FACW species ........ x 2 FAC species x 3 FACU species x 4 01,11. species x 6 Column Totals: (A) Prevafonco Index 7131A Vd- roph'y I i c,-Vc 9, a ta t i o n indicators: I - Rapid Tost for I lydrophylic Vegetation 2 - Dominance Test is >50% 3 - Provalonce Index is fz3.0' 4 - Morphological Adaptations' (Provide supporting dale in Remarks or on a separate sheet) 5 - Welland Non-vasr;ulal Plants, Problematic I iydrDl)l)y(ic Vogotalion' (explain) 'Indicators of hydrie. soil and wolland hydrology must bo prasont, unless disturbed or problematic. n iatic. Hydrophytic Vegetation 1,0101 Cover Prosont? Harr: Growid in Herb SIRAL1111 Remarks: Yos. No US Army Corps, of I.--riginocis Western Mounlains. Valleys, and Coast - Version 2.0 2. 4. 1,0141 (,.over 4. kis lb S I ra I i j m Total Cover (Plal lv\ 0 IP Ali bed f I('(' C, kf Ck-lu E e ' L k I' P" I r e ll10 Total cover tVMOY Vif1P.$!rk)KKl! (Plot site: Number of Dominant Species That Are OBL. FACW, or FAC- pix (A) Total Number of Dominant '.. I Species Across All Strata: 1�7" . .. (1-3) Percent of Dominant Species Thal Are OBL. TACK or FAC: (AIR) Pro v­a'Ic'i ice'l-n"d- o- x wo r lk sihi Q a t ovolivyAyz - .Yqc� Cover 0131. species -,. . - . x I FACW species ........ x 2 FAC species x 3 FACU species x 4 01,11. species x 6 Column Totals: (A) Prevafonco Index 7131A Vd- roph'y I i c,-Vc 9, a ta t i o n indicators: I - Rapid Tost for I lydrophylic Vegetation 2 - Dominance Test is >50% 3 - Provalonce Index is fz3.0' 4 - Morphological Adaptations' (Provide supporting dale in Remarks or on a separate sheet) 5 - Welland Non-vasr;ulal Plants, Problematic I iydrDl)l)y(ic Vogotalion' (explain) 'Indicators of hydrie. soil and wolland hydrology must bo prasont, unless disturbed or problematic. n iatic. Hydrophytic Vegetation 1,0101 Cover Prosont? Harr: Growid in Herb SIRAL1111 Remarks: Yos. No US Army Corps, of I.--riginocis Western Mounlains. Valleys, and Coast - Version 2.0 SOIL sampling Point: Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth l3eciox 1: u'atiur.cs. % TOXILIM (inchQ§) _Qolej. fropi"I _S-Qlgr�hr gist) 71 ypo_ PC- Remiarks I y Concenlration, 1) Depletiorl, RM:zKuduced Matrix. CS-Covefod or Coated Sand Grains. pc� * . ... . ........ . .. .......... . koc.061911. .111. t -fore- Lining, _q, - . . - - - - ­­­ ­.— - .. --1.1 ---. . Hydric Soil Ind[cators: (Applicable to all LFRRs, unless otherwise noted.) indicators for Probimatic Hydric Sails'; Histowl (Al) Sandy Redox (S5) 2 cm Muck (A10) Histic Epipedon (A2) Stripped Matrix (S6) Rod Parent material (I r:2) Block I listic (A3) I onmy Mucky Mineral (1-1) (except MURA 1) Very Shallow Dv* Surface (17-12) Hydrogen Sulfide (A4) I oamy Gloyed Matrix (1"2) Other (I"Aplain in Remarks) Depleted Btflovo []ark Suilaoc (A11) Depleted Matrix (1'3) Aquatic Invortebrato, (1313) Think Dark Surface (Al2) Redox Dark Smi;ico (F6) 'Indicators of hydrophylic vegetation and Sandy Mucky Mineral (S1 Depleted Dark Suiface (Fl) wellaod hydrology must be present. Eandy CAcyeid Matrix Redox Depressions (H) unless disturbed or problomaiic, A. e sir Ir, Vve L aye r, I I f PrS e 11{): Iron Deposits (B!;) Recent Iron Reduction in'1Soils (C(3) FAC -Neutral Test (05 4- 'I Stunted or Stressed Plants (1)1) (LRR A) Raisod Ant Mounds (06) (LRR A) Inundation Visible on Aerial Imagery (B?) Dopit) (inches).- Frost.-Hoove Hummocks (DY) Hydric Soil Present? Yes,. No__ iZomarks: Field 6bgervation%: HYDROLOGY Wqtjsn'dHydrology'ln d-lc-a'1'o­r's"-:_' P ri nlafy (rninimm of one mquirc q� p _rp.(q.q Viredl SUrIaGO Waler (Al) Water -Stained I eaves (13g) (except Water-.Stainad Leaves (1.3r)) (MLRA 1, 2, High Water 'lablo (A2) IVILRA 1, 2, 4A, and 4151) 4A, and 413) Saturation (A3) Salt Crust (1311) Drainage Patterns (13 10) Water Marks (31) Aquatic Invortebrato, (1313) Dry. -Season Water Table (C?) Sediment Deposits, (K) Hydrogen Sulfide Odor (Cl) Saturation Visible on Aerial Imagery (C9) Drill, Deposits (133) Oxidi,,ud Rhimsphoros along Living Roots (C3) G comorphic Position (1)2) Algal Mat or Crust (04) Presenco of Reduced lron (C4) Shallow AqUitard (03) Iron Deposits (B!;) Recent Iron Reduction in'1Soils (C(3) FAC -Neutral Test (05 Surface Soil Cracks (116) Stunted or Stressed Plants (1)1) (LRR A) Raisod Ant Mounds (06) (LRR A) Inundation Visible on Aerial Imagery (B?) 01hor (Explain in Remarks) Frost.-Hoove Hummocks (DY) Sparsely Vegetated Concave Surface (BB) Field 6bgervation%: Surface Walor Present? Yes No X' I)OP11) onol)nq): Wator'lablo Present? yes, No Depth (inohes):Jc Saturation Present', Yet; No Depth (inchr,,5): Weiland Hydrology Present? Yes No (includes _ca. P ill 8 1. y frriq9.09— 1) .csc . ribe Recorded . Dala (stream gauge, monitoring woll, aerial photos, previou's inspecVoqs), if availLibb US Army Corps of Engineors We'stom Mountains. Valleys, and Coast -- Version 2,0 APPENDIX C RATING FORMS WW1 479CovingtonRd.APPC/062316/tjs C-1 Wetland name or number (—' L. RATING SUMMARY — Western Washington ID R): I Date of site visit: :"4' Name of wetland (ot Rated by (rained by [.cology? No Date of training c)6j1 HGIVI Class used for rating. Welland has Multiple 116M 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' _3C(based on functions../ . or special characteristics,.._..) ..... 1. Category of wetland based on FUNCTIONS Category I –Total score :-. 23 - 27 ;2i Category 11 Total score 20 - 22 .—.---Category III Tow I score = 16 -- 19 IV—Total score =9 .. 15 FUNCTION Improving Hydrologic Habitat Wetland of High Conservation Value Water Quality Mature Forest Old Growth Forest Coastal Lagoon 11 Circle the app ropriatefatings Site Potential Landscape Potential J. M L _H 6 'L H L , O�M� M L Value 4'H) M I- H M 1 1-1 M�! 'I TOTAL SCDre, Based on Ratings 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine I II I Wetland of High Conservation Value Bog Mature Forest Old Growth Forest Coastal Lagoon 11 Interdunai 1 11 111 TV None of the above Wetland Rating System for Western WA: 2014 Update Rating Form - Eff('Ttivc January 1, 2015 Score for each function based on three ratings (order of ratings is not important) 9 li,H,H 8 = H,H,M 7 = 11jij- 'I = 11'M'M 6 = li,M,L 6 = M,M,M 5;---11,l.j 5 M,M,L 4 M, L, L 3 = I_, L, Wetla)i(iiiiiiiieter I)LIJI)I)C')- z( Maps and figures required to answer questions correctly for- Western orWestern Washington Depl-essional Wetlands Map of:answer questions:- Figure it Cowardin Plant Classes 1.) 1.3, 11 1.1" H 1.4 D' 1..4,1.1- 3.2 Location of outlet (con be added lo map of hydroperiods) D 1.1, ID 4.1 -Boundary ,*o-f,iif-oa"within 15,0fto,f"the -,tw--..'tl'a-n,d (con be ... o-d'd-ed-lo another figure) D 2.2, 1) 5.2 Map of the contributing basin 04.3 D5.3 I kmP�lygoii-:,-A-r-e,-i-that 'extends —I km -i—nc-lu"ding —11 2.1, IA 2,2, 1-12.3 polyg)ons for accessible habitat and undisturbed habitat ScrPon captvri� of rnap of 303(d) listed waters in basin (from Ecology websile) Screen capture of list of I'MDL,s for WRIA in which unit is round (from web) 11 3.3 Riverine Wetlands Map Df: -- — - To answer c u!!s jons: -- — L Figure ff Cowardin plant classes 14 1.1, H 1.4 _Liy.qroperiiods Pondcddvpresslons R 1.1 1. Boundary o(a-rea —within 1-56-fr-o-f the —1a r d- (can be adJed (a another i --e)- -R,-2--4-, Plant-covor of-troes,- shrubs, and herbaceous plants Rn'.2-, R 4.2 Width of unit vswidth of stream (can be added to onothel-figure) Map of the contributing basin" R 2-2., R 2. 3, R S. 2 .1 km Polygon: Area that'extends 1 km from entire.wLflandedge •'including .... ....... H 2-1, 1-1 2.2, 1123 polygons for accessible habitat and undisturbed habitat Screen capture of map of 303(d) listed waters In basin (from Ecology website) 19311 Screen capture of list ofTIVIDI.s for WRIA in which unit is found (from web) R 3 7, ft 13 Lake Fringe Wetlands Map of: Cowardin plant classes Plant cov(.,.t of trees, shrubs, and herbaceous plants Boundary of area within 150 ft of the wetland {can be added to .1 km Polygon: Area that extends I km from entire wetland edge - including polygons for accessible habitat and undisturbed habitat Screen Capture Of map of 303(d) listed waters in basin (frorn Ecology website) ---- ------- - Screen capture of list ufTMDLs foi WRIA in Which unit isfound (frorn web) SIML, Wo lands Cowardin plant classes Hydroporiods Plant cover of dense trees, shrubs. and herbaceous plants Plant cover of dense, rigid trees, shrubs, and herbaceous plants (can be added to fiqure above) Boundary of 1 �>D it buffer (can be added to mother• figure) I km Polygon: Area that extends I km from entire wetland edge including R90Kc,inns for accessible habitat and undisturbed habitat Screen Capture of map of 303(d) listed waters in basin (from geology website) Screen capture of list of TIVIDI-s for WRIA in which unit is found (from web) Welland haling System for Western WA: ?014 Update RtItijw Form - J."I'Toctive January 1, '1,015 t, I. .1 . 1, 1.4.1, 1-11. 1, 111. 4 1 3.2 H H 2-2, 11 2.3 L 3.1, L 3.2 To answer t 11 1.1. H 7.,4 1-1. 1. 2 ......... 513 S4.1 52.1, S5.1 1-12.1, 1-1 2.2, It 2.3 S31 S3.2 S_3 3 2 Wetland name or number,___��.� . HGM Classification of Wetlands in Western Washington For questions 1-7, the crit'er'ia described 111USt 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. 1 Are the water levels in the entire Uilit USI -111y C011t1-011Cd by tides eXCept dUrilig floods? I 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 allmEal low flow below 0.5 ppt ())arts per thousand)? NO - Saltwater Tidal Fringe (Estuarine) YES - Freshwater Tidal Fringe 11 your wetland carr be clossified as a Freshwater Tidal Fringe use the farms for Riverine wetlands. If it. is Saltwater Tidal Fringe it is an 1?stisar-ine wetland and is not scored. This method cannot be used to score: functions fibr estuorine 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 waiver to the unit:. r�. N0; ,)go to 3 YES - The wetland class is Flats 1/:your lvet/und can be classified os a Mats welland, use the form for Depressional wetlands. 3. Does the entire wetland unit roect all ofthe followinf., criteria? _The vegetated part of the wet. -land is on the shores of a body of perplal mt. open water (without any plants on the surface at any time of the year) at,)eiist20 tic (8 Ila) in size; At least 30010 of: the open water area is deeper than 6.6 ft (2 nl). � go to 4 YPS - The wetland classis Lance Fringe (Lacustrine Fringe) �fNG 1)tlos the entire wetland unit. meet all of the following criteria? __..__1'he wetland is on a slope (slope can be veryDraduol), ........1'he Water flows through the wetland in one direction (UllidireCUOnal) and wmally collies from seeps. it May flow subsurface, as sheetilow, or in a swale without distinct: banks, The water- leaves the wetland without being impounded. O.N(�' 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 tt diameter and less than 1 ft cleep). S. l)OeS the entire Wetland 1,111it meet all Of the following criteria? ____'I'he iillit is in a valley, or stream Channel, where it gets inundated by overbank flooding from that stream or river, .1'he overbank flooding occurs at least once every 2 years. "Ieiland Rating System for Western WA: 2014 Update Rating Dorm - Ff'fc:clivc January t, 201 rr Wetland,gargle or number f;o to 6 YES ­ The wetland class is RiveHile OTE: The Riverine unit con 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 tinge during the year? This means that any outlel, If pros ent, is hiphLr than the interim- ./ the Welland. NO - go to 7 Y — 'lie wetland class is Depressional 7. Is the entire wetland unit located in a vel -y flat irea with Ile Obvious depression and no overballk flooding,? The unit does not pond SIJ, -face Watt' 1)1()I -e than a few Inches. The Unit seems to be maintained by high grOUndwater in the area. The waland may be ditched, but has no obvious naLural outlet. NO-g;ot.o8 YES - '1'hc; wetland class is Depi-essional B. Your VVCdAll d unit seetllS Lo be difficult to classify and probably contains several differentIf GM classes. 1'�or example, seeps at the base of a slope may grade into a riveerine floodplain, or a small stream within a Depressional wetland has a cone of flooding; along its sides. GO BACKAND IDE'N'1 I Y WHICH OFTHE iiYDROLOGIC MGIMES DFSCRIBEA) 1N QUE'STIONS 1-7 APPLY TO DIF19;R1 NT i1R1?AS 1N 'HE" 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 iIGM classes present within the wetland unit being scored. NO'T'E: Use this table only if the class that is reconimeilded in the SCCO[ld COILlmn represents 109/0 or more of the total area of the wetland unit. being; rated. !f the area of the HGM class listed in c0lunln 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 unlit beim, rated �_- HGM class to use in rating, _ Slope a- Riverine Riverine Slope + Depressional -� -- - Slope + Lake Frin{:Et - Depressional •i- Riverine alonE stream --� within boundary of depression Depressional lake fringe - — Depressional _ Depressional 4 - Lake fringe - Depressional.._ Riverine •+ Lake Fringe Riverine Salt Wa._. ._._ te - r Tidal Fringe and any other class of freshwater wetland ...._........�__-._�. Treat as ESTUARINE ij j,au al'e still unable to deterr line which of the above criteria apply toyout- wetland, or if Piave mare dial, Z HGM classes within a wetland boundary; classify the wetland as Depressional for the mtiap. Wctlaiid Rating 5yscc,nt for Weslcrn WA: 2014 Update Ralinl; Form - LYfective January 1, 'LOIS