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Home My WebLink AboutRS_Wetland_Assessment_241007_v1 Seattle 9706 4th Ave NE, Ste 300 Seattle, WA 98115 Tel 206.523.0024 Kirkland 750 6th Street Kirkland, WA 98033 Tel 425.822.5242 Mount Vernon 2210 Riverside Dr, Ste 110 Mount Vernon, WA 98273 Tel 360.899.1110 Whidbey 1796 E Main St, Ste 105 Freeland, WA 98249 Tel 360.331.4131 Federal Way 31620 23rd Ave S, Ste 307 Federal Way, WA 98003 Tel 253.237.7770 Spokane 601 Main Ave, Ste 617 Spokane, WA 99201 Tel 509.606.3600 November 21, 2023 Tristan Bull 5424 NE 10th Street, Renton, WA 98059 (913) 707-0865 tristan.m.bull@gmail.com Bull Property, Wetland and Stream Delineation Report DCG/Watershed Reference Number: 2310.0461.00 Summary This report has been prepared to present the findings of a wetland and stream delineation study located at 5424 NE 10th Street in the City of Renton, Washington (parcel #1023059365). In addition to the information and findings presented in this report, the following documents are enclosed: • Site Photos • Delineation Sketch • Wetland Determination Data Forms • Wetland Rating Forms and Figures One wetland (Wetland A) is in the west half of the subject property. It is a Category II wetland with six habitat points (Table 1). The City of Renton requires a standard 150-foot buffer for Wetland A. One stream (Stream A) flows through Wetland A from the south edge of the property but loses channel definition shortly after entering the property. Stream A is a Type F (fish-bearing) stream. The City of Renton requires a standard 115 -foot buffer for Stream A. A second off-site wetland (Wetland B) was observed south of NE 10th Street. However, the onsite wetland buffer is the most encumbering feature. Bull Property Delineation Report Bull, T. November 2023 Page 2 Table 1. Summary of wetlands, streams, and required buffers. Study Area The study area is defined as parcel #1023059365 and is approximately #1.26 acres in size (Figure 1). Adjacent public or private property within 200 feet was screened from the edge of parcel or nearest publicly accessible land; no private property was accessed without permission. It is situated within Section 10 of Township 25 North, Range 05 East. Figure 1. Study area map; inset shows subject property outlined in yellow. Methods Field investigations for the delineation study were conducted on November 1, 2023 by ecologists Anna Murphy and Sage Yuasa. Feature Name Category/Type Habitat Score Buffer (ft) Setback (ft) Wetland A Category II 6 150* 15 Stream A Type F - 115 15 Bull Property Delineation Report Bull, T. November 2023 Page 3 The study area was evaluated for wetlands using methodology from the Corps of Engineers Wetland Delineation Manual (Environmental Laboratory 1987) and the Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region Version 2.0 (U.S. Army Corps of Engineers 2010). The presence or absence of wetlands was determined based on an examination of vegetation, soils, and hydrology. These parameters were sampled at several locations along the wetland boundary to determine the wetland edge. Wetlands were classified using the Washington State Department of Ecology’s Wetland Rating System for Western Washington: (Hruby 2014). Characterization of weather conditions for precipitation in the Wetland Determination Data Forms were determined using the WETS table methodology (USDA, NRCS 2015). The “Seattle Tacoma Intl AP” station from 1991-2020 was used as a source for precipitation data (http://agacis.rcc-acis.org/). The WETS table methodology uses climate data from the three months prior to the site visit month to determine if normal conditions are present in the study area region. The study area was evaluated for streams based on the presence or absence of an ordinary high water mark (OHWM) as defined by Section 404 of the Clean Water Act, the Washington Administrative Code (WAC) 220-660-030, and the Revised Code of Washington (RCW) 90.58.030 and guidance documents including Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State (Anderson 2016) and A Guide to Ordinary High Water Mark (OHWM) Delineation for Non-Perennial Streams in the Western Mountains, Valleys, and Coast Region of the United States (Mersel and Lichvar 2014). Public-domain information on the subject properties was reviewed for this delineation study. Resources and review findings are presented in Table 2 of the “Environmental Setting” section of this letter. Environmental Setting The study area is in the May Creek sub-basin of the Cedar-Sammamish watershed (WRIA 8). It is in a residential area of the City of Renton located at the south edge of a ravine that extends northwest. Site topography in the east half of the property slopes southeast into a depression in the west half. Most of the east half of the property has been terraced and leveled (Figures 2 and 3). The subject property is developed with a single-family residence, attached garage, and a detached shed. The property is bordered by single-family residences to the east, north, and west and by NE 10th Street to the south. Bull Property Delineation Report Bull, T. November 2023 Page 4 Figure 2. View of terraces in the northeast corner of the subject property. Figure 3. View of south portion of the subject property, with leveled lawn area on the left sloping to a depression on the right. Bull Property Delineation Report Bull, T. November 2023 Page 5 Public-domain information reviewed for the site is summarized below (Table 2). Table 2. Summary of online mapping and inventory resources. Findings Wetlands The on-site edge of Wetland A was delineated and flagged in the subject property. Wetland A is a depressional wetland which extends off-site to the west and north of the subject property. A large depressional wetland (Wetland B) was observed south of NE 10th Street. Surface waters Resource Summary USDA NRCS: Web Soil Survey Alderwood gravelly sandy loam, 15 to 30 percent slopes (AgD) mapped in northeast half and Alderwood gravelly sandy loam, 8 to 15 percent slopes (AgC) mapped in southeast half of the subject property. Both soils are rated nonhydric. USFWS: NWI Wetland Mapper Corridor of riverine wetland (R3UBH) mapped in subject property extending north and south. Palustrine scrub-shrub wetland (PSSF) mapped south of NE 10th Street. WDFW: PHS on the Web Freshwater forested/shrub wetland mapped within parcels south of NE 10th St. WDFW & NWIFC: Statewide Washington Integrated Fish Distribution No fish use mapped in stream within subject property. WNHP Data Explorer No features mapped within subject property WA-DNR: Forest Practices Application Mapping Tool (FPARS) Type U (unknown) stream mapped flowing through west half of subject property. Type U stream is mapped Type F approx. 186 feet south of subject property. King County iMap Stream mapped in west half of subject property. Erosion hazard mapped in northeast portion. Mapped within UGA. City of Renton maps Type Ns (non-fish seasonal) stream (Honey Creek) mapped in west half of property. Wetlands mapped along west edge of neighboring property and within parcels to the south of NE 10th Street. Northeast portion mapped between 25-40% slopes. Zoned R-4 (4 DU/acre). WETS Climatic Condition Normal conditions Bull Property Delineation Report Bull, T. November 2023 Page 6 appear to flow unidirectionally from Wetland B to Wetland A via a culvert under NE 10th Street. Wetland A is summarized in Table 3. Bull Property Delineation Report Bull, T. November 2023 Page 7 Table 3. Wetland A assessment summary. WETLAND A – Assessment Summary Location: The west portion of parcel #1023059365 WRIA / Sub-basin: Cedar-Sammamish watershed / May Creek sub-basin 2014 Western WA Ecology Rating: Category II Buffer Width and Buffer Setback: 150 feet 15 feet Wetland Size: Approx. 2 acres Cowardin Classification(s): Palustrine forested/scrub- shrub HGM Classification(s): Depressional Wetland Data Sheet(s): DP 1 Upland Data Sheet (s): DP 2 Flag Color: Pink- and black-striped Flag Numbers: A1-A21 Vegetation Tree stratum: Salix lasiandra, Thuja plicata, Alnus rubra Shrub stratum: Cornus sericea, Rubus spectabilis, Spirea douglasii Herb stratum: Athyrium filix-femina, Oenanthe sarmentosa, Phalaris arundinacea Soils Soil survey: Alderwood gravelly sandy loam, 8 to 15 percent slopes (AgC) Field data: Hydrogen Sulfide (A4) Hydrology Source: High groundwater table, stream surface flow Field data: High Water Table (A2), Saturation (A3), Hydrogen Sulfide (C1) Wetland Functions Improving Water Quality Hydrologic Habitat 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 8 7 6 21 Description and Comments Stream A (Honey Creek) flows into Wetand A along the south edge of the property and transitions to sheet flow through the wetland. Water within Wetland A is presumed to outflow into Stream A Bull Property Delineation Report Bull, T. November 2023 Page 8 approximately 0.13 miles northeast of the subject property within a narrow ravine. This area was not accesses as it is located on private property. Streams Stream A, mapped as Honey Creek, enters the south boundary of the subject property through a 12-inch corrugated metal culvert under NE 10th Street (Figure 4). Stream A loses channel definition after approximately 30 feet northwest of the culvert and there are no discernable bed, banks, or OHWM beyond this point. Per City of Renton Maps (COR map), Stream A has a gradient of less than five percent on the subject property. The delineated segment of Stream A contained a substrate of mostly organic-rich soils and silt interspersed with cobble (Figure 5). The bankfull width was an average of three feet and overhanging vegetation included reed canary grass (Phalaris arundinacea), bindweed (Convolvulus sp.), Pacific willow (Salix lasiandra). Stream A is mapped by the COR map as exiting the northwest corner of the subject property and flowing northwesterly through a narrow ravine for approximately 0.4 miles before turning west and flowing under two residential streets for approximately one quarter mile. Stream A continues northwesterly for approximately 1.7 miles through piped and open channel sections before joining May Creek. May Creek flows generally west and then north before discharging to Lake Washington. Bull Property Delineation Report Bull, T. November 2023 Page 9 Figure 4. View of Stream A entering the subject property. Figure 5. View of delineated portion of Stream A on the subject property. Bull Property Delineation Report Bull, T. November 2023 Page 10 Non-wetland Areas Areas upslope of Wetland A do not meet the criteria for wetland hydrophytic vegetation, hydric soils, and/or wetland hydrology. The dominant vegetation includes Douglas-fir, western red cedar, and apple trees, with an understory of Himalayan blackberry and lawn grass. Local Regulations Wetlands and streams in Renton are currently regulated under Chapter 4-3-050 Critical Areas Regulations of the Renton Municipal Code (RMC). Wetlands Wetlands are classified using the 2014 Update to the Western Washington Wetland Rating System (Publication #14-06-029) (Rating System). According to the Code, wetlands are rated as one of four categories based on the Rating System, and wetland buffers are determined based upon a combination of the wetland category, habitat score, and land use. The RMC categorizes land use as either low-impact, which includes low-intensity use such as unpaved trails and undeveloped open space, or “all other land uses.” The subject property is developed and zoned residential, therefore the land use is considered “all other land use.” Wetland A is a Category II wetland with a habitat score of six points, requiring a standard buffer of 150-feet (RMC 4-3- 050G(2). The property is highly encumbered by stream, wetland and associated buffers. Streams Per RMC 4-3-050G(2)(7) streams are classified according to the criteria identified in WAC 222- 16-030. Although online documentation characterizes Stream A as non-fish bearing, fish presence in Stream A is presumed due to physical characteristics observed during the site visit and mapped topography. During the site visit, the evaluated segment of Stream A met the criteria for containing fish habitat with a bankfull width of at least two feet and a gradient of less than 16%. The downstream reach of Stream A also meets the criteria for containing fish habitat as measured by City of Renton GIS map topography. As stream flow is presumed seasonal, Stream A is a Type F seasonal water requiring a standard buffer of 115 feet. Setbacks Per RMC 4-3-050G(2), buildings and structures require a setback of 15-feet from the outer edge of the critical area buffer. The following may be allowed in the building setback area: landscaping, uncovered decks less than 18 inches above grade, building overhangs that do not extend more than 24 inches into the setback area, and impervious ground surfaces, such as driveways and patios, provided that such improvements may be subject to water quality regulations and maximum impervious surface limitations. Bull Property Delineation Report Bull, T. November 2023 Page 11 Buffer Modifications The required wetland buffers may be reduced if a reviewing official finds that a proposed project meets all the criteria under RMC 4-3-050I(1)(3), including that the reduced buffer will function at a higher level than the standard buffer, an enhanced buffer shall never be less than 75 percent of the standard width at its narrowest point, and the buffer area has less than 15 percent slopes and no direct or indirect, short-term or long-term, adverse impacts to regulated wetlands. As there are regulated slopes greater than 15 percent mapped within Wetland A’s on- site buffer, buffer reductions may not be applicable. Exemptions Per RMC 4-3-050C(3), certain activities are exempt from the applicable critical area provisions, provided a letter of exemption has been issued. Alterations and additions at developed properties with existing nonconforming uses, like this one, may be permitted pursuant to RMC 4-3-050C(3)(22): “Additions and alterations of an existing single family residence and/or garage (attached or detached); provided, that the addition/alteration does not increase the footprint of the structure lying within the critical area or buffer; and provided, that no portion of the addition/alteration occurs closer to the critical area or required buffers than the existing structure unless the structure or addition can meet required buffers. Existing or rebuilt accessory structures associated with single family dwelling and rebuilt with the same footprint such as fences, gazebos, storage sheds, and play houses are exempt from this Section. New accessory structures may be allowed when associated with single-family dwellings such as fences, gazebos, storage sheds, play houses and when built on and located in a previously legally altered area.” Variance If the exemption does not apply to your project, then it may be permitted through the variance process. This may include wetland buffer width reductions not otherwise authorized by RMC 4- 3-50. Variance decision criteria are as follows (RMC 4-9-250.B.6): Decision Criteria: Except for variances from critical areas regulations, a determination shall be made in writing that the conditions specified below have been found to exist: (Amd. Ord. 4835, 3- 27-2000) a. That the applicant suffers practical difficulties and unnecessary hardship and the variance is necessary because of special circumstances applicable to subject property, including size, shape, topography, location or surroundings of the subject property, and Bull Property Delineation Report Bull, T. November 2023 Page 12 the strict application of the Zoning Code is found to deprive subject property owner of rights and privileges enjoyed by other property owners in the vicinity and under identical zone classification; b. That the granting of the variance will not be materially detrimental to the public welfare or injurious to the property or improvements in the vicinity and zone in which subject property is situated; c. That approval shall not constitute a grant of special privilege inconsistent with the limitation upon uses of other properties in the vicinity and zone in which the subject property is situated; d. That the approval is a minimum variance that will accomplish the desired purpose. Variances are required to demonstrate no net loss of critical area functions or values. State and Federal Regulations Federal Agencies Most wetlands and streams are regulated by the U.S. Army Corps of Engineers (Corps) under Section 404 of the Clean Water Act. Any proposed filling or other direct impacts to Waters of the U.S., including wetlands (except isolated wetlands), would require preconstruction notification and permit authorization from the Corps. Wetland A does not appear to be isolated due to its association with Stream A; a Jurisdictional Determination from the Corps would be required to confirm the wetland’s jurisdictional status. Unavoidable impacts to jurisdictional wetlands are typically required to be compensated through implementation of an approved mitigation plan. If activities requiring a Corps permit are proposed, a Joint Aquatic Resource Permit Application (JARPA) could be submitted to obtain authorization. Federally permitted actions that could affect endangered species may also require a biological assessment study and consultation with the U.S. Fish and Wildlife Service and/or the National Marine Fisheries Service. Compliance with the Endangered Species Act must be demonstrated for activities within jurisdictional wetlands and the 100-year floodplain. Application for Corps permits may also require an individual 401 Water Quality Certification and Coastal Zone Management Consistency determination from Ecology and a cultural resource study in accordance with Section 106 of the National Historic Preservation Act. Bull Property Delineation Report Bull, T. November 2023 Page 13 Washington Department of Ecology (Ecology) Like the Corps, Ecology is charged with reviewing, conditioning, and approving or denying certain federally permitted actions that result in discharges to state waters under Section 401 of the Clean Water Act. However, Ecology review under the Clean Water Act would only become necessary if a Section 404 permit from the Corps was issued. Ecology also regulates wetlands, including isolated wetlands, under the Washington Water Pollution Control Act, but only if direct wetland impacts are proposed. Therefore, authorization from Ecology would not be needed if filling activities are avoided. A JARPA may also be submitted to Ecology to obtain a Section 401 Water Quality Certification and Coastal Zone Management Consistency Determination if filling is proposed. Ecology approvals are either issued concurrently with the Corps approval or within 90 days following the Corps approval. In general, neither the Corps nor Ecology regulates wetland and stream buffers, unless direct impacts are proposed. When direct impacts are proposed, buffers are applied based on Corps and Ecology joint regulatory guidance. Washington Department of Fish and Wildlife (WDFW) Chapter 77.55 of the RCW (the Hydraulic Code) gives WDFW the authority to review, condition, and approve or deny “any construction activity that will use, divert, obstruct, or change the bed or flow of state waters.” This provision includes any in-water work, the crossing or bridging of any state waters and can sometimes include stormwater discharge to state waters. WDFW will issue a Hydraulic Project Approval (HPA) if a project meets regulatory requirements. WDFW can also restrict activities to a particular timeframe through the conditions of approval on an HPA. Work is typically restricted to late summer and early fall, however, WDFW has in the past allowed crossings that don’t involve in-stream work to occur at any time during the year. Disclaimer The information contained in this letter is based on the application of technical guidelines currently accepted as the best available science and in conjunction with the manuals and criteria referenced above. All discussions, conclusions and recommendations reflect the best professional judgment of the author(s) and are based upon information available at the time the study was conducted. All work was completed within the constraints of budget, scope, and Bull Property Delineation Report Bull, T. November 2023 Page 14 timing. The findings of this report are subject to verification and agreement by the appropriate local, state, and federal regulatory authorities. No other warranty, expressed or implied, is made. Please call if you have any questions or if we can provide you with any additional information. Sincerely, Anna Murphy Sage Yuasa Ecologist Ecologist References Anderson, P.S. et al. 2016. Determining the Ordinary High Water Mark for Shoreline Management Act Compliance in Washington State. (Publication #16-06-029). Olympia, WA: Shorelands and Environmental Assistance Program, Washington Department of Ecology. Department of Ecology (Ecology). 2018. July 2018 Modifications for Habitat Score Ranges. Modified from Wetland Guidance for CAO Updates, Western Washington Version. (Publication #16-06-001). Accessed 8/16/18: https://fortress.wa.gov/ecy/publications/parts/1606001part1.pdf. Environmental Laboratory. 1987. “Corps of Engineers Wetlands Delineation Manual,” Technical Report Y-87-1, U.S. Army Engineer Waterways Experiment Station, Vicksburg, MS. Hruby, T. 2014. Washington State Wetland Rating System for Western Washington: 2014 Update. (Publication #14-06-029). Olympia, WA: Washington Department of Ecology. Mersel, M.K. and Lichvar, R.W. 2014. A Guide to Ordinary High Water Mark (OHWM) Delineation for Non-Perennial Streams in the Western Mountains, Valleys, and Coast Region of the United States. ERDC/CRREL TR-14-13. U.S. Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland Delineation Manual: Western Mountains, Valleys, and Coast Region (Version 2.0). ed. J. Bull Property Delineation Report Bull, T. November 2023 Page 15 S. Wakely, R. W. Lichvar, and C. V. Noble. ERDC/EL TR-10-3. Vicksburg, MS: U.S. Army Engineer Research and Development Center. U.S. Department of Agriculture (USDA), Natural Resources Conservation Service (NRCS). 2015. National Engineering Handbook, Part 650 Engineering Field Handbook, Chapter 19 Hydrology Tools for Wetland Identification and Analysis. ed. R. A. Weber. 210-VI-NEH, Amend. 75. Washington, DC. Bull Property Delineation Report Bull, T. November 2023 Page 16 Site Photos Photo 1. View of Wetland A looking northwest. Bull Property Delineation Report Bull, T. November 2023 Page 17 Photo 2. View of Stream A flowing through Wetland A. Photo 3. View of lawn area between the subject property’s residence and the east edge of Wetland A. Bull Property Delineation Report Bull, T. November 2023 Page 18 Photo 4. View of Wetland B across from the subject property along the south edge of NE 10th Street. Page 1 of 1 Wetland & Stream Delineation Sketch – Bull Property Site Address: 5424 NE 10th St, Renton, WA 98059 Jurisdiction: City of Renton Parcel Number: 1023059365 Prepared for: Tristan Bull Site Visit Date: November 1, 2023 DCG/W Ref. No.: 2310.0461.00 Wetland A Flags A-1 to A-21 Note: Field sketch only. Features depicted are approximate and not to scale. Wetland boundaries are marked with pink- and black-striped flags. Stream boundaries are marked with blue- and black-striped flags. Data points are marked with yellow- and black-striped flags. All observations were made from within the study area; adjoining private properties were not entered. DP-1 LEGEND Wetland Area Delineated Wetland Boundary Non-Delineated Wetland Boundary Delineated Stream OHWM Non-Delineated Stream Study Area Data Point (DP) Direction of Flow Culvert DP-2 Stream A Flags WMA-1L to WMA-5L and WMA-1R to WMA 5R Stream channel loses definition north of here Wetland B US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0 DP - 1 Project/Site: 5424 NE 10th Street, Renton, WA City/County: Renton Sampling date: 11/1/23 Applicant/Owner: T. Bull State: WA Sampling Point: 1 Investigator(s): A.Murphy, S. Yuasa Section, Township, Range: S10 of T25 N, R 05 East Landform (hillslope, terrace, etc): depression Local relief (concave, convex, none): none Slope (%): - Subregion (LRR): A Lat: - Long: - Datum: - Soil Map Unit Name: Alderwood gravelly sandy loam, 15 to 30 percent slopes NWI classification: Riverine wetland (R3UBH) Are climatic / hydrologic conditions on the site typical for this time of year? ☐ Yes ☐ No (If no, explain in remarks.) Are Vegetation ☐, Soil ☐, or Hydrology ☐ significantly disturbed? Are “Normal Circumstances” present on the site? ☒ Yes ☐ No Are Vegetation ☐, Soil ☐, or Hydrology ☐ naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ☒ No ☐ Is the Sampled Area within a Wetland? Yes ☒ No ☐ Hydric Soils Present? Yes ☒ No ☐ Wetland Hydrology Present? Yes ☒ No ☐ Remarks: Wetland A in-pit VEGETATION – Use scientific names of plants. Tree Stratum (Plot size: 5-m diameter) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species that are OBL, FACW, or FAC: 4 (A) 1. Salix lasiandra 90 Y FACW 2. Total Number of Dominant Species Across all Strata: 4 (B) 3. 4. Percent of Dominant Species that are OBL, FACW, or FAC: 100 (A/B) 90 = Total Cover Sapling/Shrub Stratum (Plot size: 3-m diameter) Prevalence Index worksheet: 1. Rubus spectabilis 10 Y FAC Total % Cover of: Multiply by: 2. Spiraea douglasii 10 Y FACW OBL species x 1 = 3. FACW species x 2 = 4. FAC species x 3 = 5. FACU species x 4 = 20 = Total Cover UPL species x 5 = Herb Stratum (Plot size: 1-m diameter) Column Totals: (A) (B) 1. Phalaris arundinacea 60 Y FACW Prevalence Index = B/A = 2. Ranunculus repens 10 N FAC 3. Grasses 10 N FAC* Hydrophytic Vegetation Indicators: 4. Galium aperine. 2 N FACU ☐ 1 – Rapid Test for Hydrophytic Vegetation 5. ☒ 2 – Dominance Test is > 50% 6. ☐ 3 – Prevalence Index is ≤ 3.01 7. ☐ 4 – Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 8. 9. ☐ 5 – Wetland Non-Vascular Plants1 10. ☐ Problematic Hydrophytic Vegetation1 (Explain) 11. 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 82 = Total Cover Woody Vine Stratum (Plot size: 3-m diameter) Hydrophytic Vegetation Present? Yes ☒ No ☐ 1. 2. 0 = Total Cover % Bare Ground in Herb Stratum:18 Remarks: *presumed FAC WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0 SOIL Sampling Point: DP-1 HYDROLOGY Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-9 10YR2 /2 100 Sandy loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Loc: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ☐ Histosol (A1) ☐ Sandy Redox (S5) ☐ 2cm Muck (A10) ☐ Histic Epipedon (A2) ☐ Stripped Matrix (S6) ☐ Red Parent Material (TF2) ☐ Black Histic (A3) ☐ Loamy Mucky Mineral (F1) (except MLRA 1) ☐ Very Shallow Dark Surface (TF12) ☒ Hydrogen Sulfide (A4) ☐ Loamy Gleyed Matrix (F2) ☐ Other (Explain in Remarks) ☐ Depleted Below Dark Surface (A11) ☐ Depleted Matrix (F3) ☐ Thick Dark Surface (A12) ☐ Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. ☐ Sandy Mucky Mineral (S1) ☐ Depleted Dark Surface (F7) ☐ Sandy Gleyed Matrix (S4) ☐ Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Yes ☒ No ☐ Type: Compacted gravel/sand Depth (inches): 9 Remarks: Wetland Hydrology Indicators: Primary Indicators (minimum of one required: check all that apply) Secondary Indicators (2 or more required) ☐ Surface water (A1) ☐ Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) ☐ Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) ☒ High Water Table (A2) ☒ Saturation (A3) ☐ Salt Crust (B11) ☐ Drainage Patterns (B10) ☐ Water Marks (B1) ☐ Aquatic Invertebrates (B13) ☐ Dry-Season Water Table (C2) ☐ Sediment Deposits (B2) ☒ Hydrogen Sulfide Odor (C1) ☐ Saturation Visible on Aerial Imagery (C9) ☐ Drift Deposits (B3) ☐ Oxidized Rhizospheres along Living Roots (C3) ☒ Geomorphic Position (D2) ☐ Algal Mat or Crust (B4) ☐ Presence of Reduced Iron (C4) ☐ Shallow Aquitard (D3) ☐ Iron Deposits (B5) ☐ Recent Iron Reduction in Tilled Soils (C6) ☒ FAC-Neutral Test (D5) ☐ Surface Soil Cracks (B6) ☐ Stunted or Stressed Plants (D1) (LRR A) ☐ Raised Ant Mounds (D6) (LRR A) ☐ Inundation Visible on Aerial Imagery (B7) ☐ Other (explain in remarks) ☐ Frost-Heave Hummocks ☐ Sparsely Vegetated Concave Surface (B8) Field Observations: Wetland Hydrology Present? Yes ☒ No ☐ Surface Water Present? Yes ☐ No ☒ Depth (in): Water Table Present? Yes ☒ No ☐ Depth (in): 5 Saturation Present? Yes ☒ No ☐ Depth (in): surface (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: Surface water within 3 feet US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0 DP - 2 Project/Site: 5424 NE 10th Street, Renton, WA City/County: Renton Sampling date: 11/1/23 Applicant/Owner: T. Bull State: WA Sampling Point: 2 Investigator(s): A.Murphy, S. Yuasa Section, Township, Range: S10 of T25 N, R 05 East Landform (hillslope, terrace, etc): Flat terrace Local relief (concave, convex, none): none Slope (%): - Subregion (LRR): A Lat: - Long: - Datum: - Soil Map Unit Name: Alderwood gravelly sandy loam, 15 to 30 percent slopes NWI classification: none Are climatic / hydrologic conditions on the site typical for this time of year? ☐ Yes ☐ No (If no, explain in remarks.) Are Vegetation ☐, Soil ☐, or Hydrology ☐ significantly disturbed? Are “Normal Circumstances” present on the site? ☒ Yes ☐ No Are Vegetation ☐, Soil ☐, or Hydrology ☐ naturally problematic? (If needed, explain any answers in Remarks.) SUMMARY OF FINDINGS – Attach site map showing sampling point locations, transects, important features, etc. Hydrophytic Vegetation Present? Yes ☒ No ☐ Is the Sampled Area within a Wetland? Yes ☐ No ☒ Hydric Soils Present? Yes ☐ No ☒ Wetland Hydrology Present? Yes ☐ No ☒ Remarks: Wetland A out-pit VEGETATION – Use scientific names of plants. Tree Stratum (Plot size: 5-m diameter) Absolute % Cover Dominant Species? Indicator Status Dominance Test worksheet: Number of Dominant Species that are OBL, FACW, or FAC: 2 (A) 1. Malus sp. 20 Y NL 2. Thuja plicata 10 Y FAC Total Number of Dominant Species Across all Strata: 2 (B) 3. 4. Percent of Dominant Species that are OBL, FACW, or FAC: 100 (A/B) 30 = Total Cover Sapling/Shrub Stratum (Plot size: 3-m diameter) Prevalence Index worksheet: 1. Malus sp. 15 Y NL Total % Cover of: Multiply by: 2. OBL species x 1 = 3. FACW species x 2 = 4. FAC species x 3 = 5. FACU species x 4 = 20 = Total Cover UPL species x 5 = Herb Stratum (Plot size: 1-m diameter) Column Totals: (A) (B) 1. Grasses 95 Y FAC* Prevalence Index = B/A = 2. Ranunculus repens 10 N FAC 3. Hydrophytic Vegetation Indicators: 4. . ☐ 1 – Rapid Test for Hydrophytic Vegetation 5. ☒ 2 – Dominance Test is > 50% 6. ☐ 3 – Prevalence Index is ≤ 3.01 7. ☐ 4 – Morphological Adaptations1 (Provide supporting data in Remarks or on a separate sheet) 8. 9. ☐ 5 – Wetland Non-Vascular Plants1 10. ☐ Problematic Hydrophytic Vegetation1 (Explain) 11. 1Indicators of hydric soil and wetland hydrology must be present, unless disturbed or problematic. 105 = Total Cover Woody Vine Stratum (Plot size: 3-m diameter) Hydrophytic Vegetation Present? Yes ☒ No ☐ 1. 2. 0 = Total Cover % Bare Ground in Herb Stratum:0 Remarks: *presumed FAC Salix lasiandra in canopy but rooted out WETLAND DETERMINATION DATA FORM – Western Mountains, Valleys, and Coast Region US Army Corps of Engineers Western Mountains, Valleys, and Coast – Version 2.0 SOIL Sampling Point: DP-2 HYDROLOGY Profile Description: (Describe to the depth needed to document the indicator or confirm the absence of indicators.) Depth Matrix Redox Features (inches) Color (moist) % Color (moist) % Type1 Loc2 Texture Remarks 0-5 10YR 3/2 100 Sandy gravelly loam 1Type: C=Concentration, D=Depletion, RM=Reduced Matrix, CS=Covered or Coated Sand Grains. 2Loc: PL=Pore Lining, M=Matrix. Hydric Soil Indicators: (Applicable to all LRRs, unless otherwise noted.) Indicators for Problematic Hydric Soils3: ☐ Histosol (A1) ☐ Sandy Redox (S5) ☐ 2cm Muck (A10) ☐ Histic Epipedon (A2) ☐ Stripped Matrix (S6) ☐ Red Parent Material (TF2) ☐ Black Histic (A3) ☐ Loamy Mucky Mineral (F1) (except MLRA 1) ☐ Very Shallow Dark Surface (TF12) ☐ Hydrogen Sulfide (A4) ☐ Loamy Gleyed Matrix (F2) ☐ Other (Explain in Remarks) ☐ Depleted Below Dark Surface (A11) ☐ Depleted Matrix (F3) ☐ Thick Dark Surface (A12) ☐ Redox Dark Surface (F6) 3 Indicators of hydrophytic vegetation and wetland hydrology must be present, unless disturbed or problematic. ☐ Sandy Mucky Mineral (S1) ☐ Depleted Dark Surface (F7) ☐ Sandy Gleyed Matrix (S4) ☐ Redox Depressions (F8) Restrictive Layer (if present): Hydric soil present? Yes ☐ No ☒ Type: Compacted gravelly fill material Depth (inches): 5 Remarks: Wetland Hydrology Indicators: Primary Indicators (minimum of one required: check all that apply) Secondary Indicators (2 or more required) ☐ Surface water (A1) ☐ Water-Stained Leaves (except MLRA 1, 2, 4A & 4B) (B9) ☐ Water-Stained Leaves (B9) (MLRA 1, 2, 4A & 4B) ☐ High Water Table (A2) ☐ Saturation (A3) ☐ Salt Crust (B11) ☐ Drainage Patterns (B10) ☐ Water Marks (B1) ☐ Aquatic Invertebrates (B13) ☐ Dry-Season Water Table (C2) ☐ Sediment Deposits (B2) ☐ Hydrogen Sulfide Odor (C1) ☐ Saturation Visible on Aerial Imagery (C9) ☐ Drift Deposits (B3) ☐ Oxidized Rhizospheres along Living Roots (C3) ☐ Geomorphic Position (D2) ☐ Algal Mat or Crust (B4) ☐ Presence of Reduced Iron (C4) ☐ Shallow Aquitard (D3) ☐ Iron Deposits (B5) ☐ Recent Iron Reduction in Tilled Soils (C6) ☐ FAC-Neutral Test (D5) ☐ Surface Soil Cracks (B6) ☐ Stunted or Stressed Plants (D1) (LRR A) ☐ Raised Ant Mounds (D6) (LRR A) ☐ Inundation Visible on Aerial Imagery (B7) ☐ Other (explain in remarks) ☐ Frost-Heave Hummocks ☐ Sparsely Vegetated Concave Surface (B8) Field Observations: Wetland Hydrology Present? Yes ☐ No ☒ Surface Water Present? Yes ☐ No ☒ Depth (in): Water Table Present? Yes ☐ No ☒ Depth (in): Saturation Present? Yes ☐ No ☒ Depth (in): (includes capillary fringe) Describe Recorded Data (stream gauge, monitoring well, aerial photos, previous inspections), if available: Remarks: 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…1/12 1. Category of wetland based on FUNCTIONS [ ] Category I - Total score = 23 - 27 [X] Category II - Total score = 20 - 22 [ ] Category III - Total score = 16 - 19 [ ] Category IV - Total score = 9 - 15 FUNCTION Improving Water Quality Hydrologic Habitat Site Potential M L M Landscape Potential H H L Value H H H Total Score Based on Ratings 8 7 6 21 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 2. Category based on SPECIAL CHARACTERISTICS of wetland CHARACTERISTIC CATEGORY Estuarine Wetland of High Conservation Value Bog Forested Coastal Lagoon Interdunal None of the above Not Applicable Wetland name or number: Wetland A RATING SUMMARY - Western Washington Name of wetland (or ID#): Wetland A Date of site visit: 11/01/2023 Rated By: Anna Murphy and Sage Yuasa Trained by Ecology? Yes [X] No [ ] Date of Training: 12/08/2022 HGM Class used for rating: Depressional Wetland has multiple HGM classes? Yes [ ] No [X] NOTE: Form is not complete without the figures requested (figures can be combined). Source of base aerial photo/map: OVERALL WETLAND CATEGORY: [Category II] (based on functions [X] or special characteristics [ ]) 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…2/12 Wetland name or number: Wetland A 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 1km Polygon: Area that extends 1km 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 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…3/12 Wetland name or number: Wetland A DEPRESSIONAL AND FLATS WETLANDS Water Quality Functions - Indicators that the site functions to improve water quality D 1.0 Does the site have the potential to improve water quality? D 1.1 What are the characteristics of surface water outflows from the wetland? Wetland has no surface water outlet.points = 3 Wetland has an intermittently flowing, or highly constricted, outlet.points = 2 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 1 Wetland is a flat depression whose outlet is a permanently flowing ditch.points = 1 Score: 1 D 1.2 Can the soil 2in below the surface be identified as true clay or organic soil? Mapped as true clay or organic (muck or peat)points = 4 Soil texture identified as clay or organic in field points = 4 Soil texture identified as clay or organic by laboratory test points = 4 None of the above points = 0 Score: 0 D 1.3 What are the characteristics and distribution of persistent plants? Wetland has persistent, ungrazed, plants > 95% of area points = 5 Wetland has persistent, ungrazed, plants > 50% of area points = 3 Wetland has persistent, ungrazed plants > 10% of area points = 1 Wetland has persistent, ungrazed plants < 10% of area points = 0 Score: 5 D 1.4 What are the characteristics of seasonal ponding or inundation in the wetland area? Area seasonally ponded is > 50% total area of wetland points = 4 Area seasonally ponded is > 25% total area of wetland points = 2 Area seasonally ponded is < 25% total area of wetland points = 0 Score: 4 Total for D 1:10 Rating of Site Potential [ ] 12-16 = H [X] 6-11 = M [ ] 0-5 = L Record the rating on the first page D 2.0 Does the landscape have the potential to support the water quality function of the site? D 2.1 Does the wetland unit receive stormwater discharges? Yes points = 1 No points = 0 Score: 1 D 2.2 Is >10% of the area within 150ft of the wetland in land uses that generate pollutants in surface runoff? Yes points = 1 No points = 0 Score: 1 D 2.3 Are there septic systems within 250ft of the wetland? Yes points = 1 No points = 0 Score: 1 D 2.4 Are there other sources of pollutants coming into the wetland that are not listed in questions D 2.1-D 2.3? Yes points = 1 No points = 0 Score: 0 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…4/12 Wetland name or number: Wetland A D 2.5 What are the other sources of pollutants coming into the wetland? Total for D 2:3 Rating of Landscape Potential [X] 3-4 = H [ ] 1-2 = M [ ] 0 = L Record the rating on the first page D 3.0 Is the water quality improvement provided by the site valuable to society? D 3.1 Does the wetland discharge directly (i.e., within 1 mi) to a stream, river, lake, or marine water that is on the 303(d) list? Yes points = 1 No points = 0 Score: 1 D 3.2 Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d) list? Yes points = 1 No points = 0 Score: 1 D 3.3 Has the site been identified in a watershed or local plan as important for maintaining water quality? Yes points = 2 No points = 0 Score: 0 Total for D 3:2 Rating of Value [X] 2-4 = H [ ] 1 = M [ ] 0 = L Record the rating on the first page DEPRESSIONAL AND FLATS WETLANDS Hydrologic Functions - Indicators that the site functions to reduce flooding and stream degradtion D 4.0 Does the site have the potential to reduce flooding and erosion? D 4.1 What are the characteristics of surface water outflows from the wetland? Wetland has no surface water outlet.points = 4 Wetland has an intermittently flowing, or highly constricted, outlet.points = 2 Wetland is a flat depression whose outlet is a permanently flowing ditch.points = 1 Wetland has an unconstricted, or slightly constricted, surface outlet that is permanently flowing points = 0 Score: 0 D 4.2 What is the depth of storage during the wet periods? Marks of ponding are 3ft or more above the surface or bottom of the outlet.points = 7 Marks of ponding are between 2ft to <3ft from the surface or bottom of the outlet.points = 5 Marks of ponding are at least 0.5ft to <2ft from the surface or the bottom of the outlet.points = 3 The wetland is a "headwater" wetland.points = 3 The wetland is flat but has small depressions on the surface that trap water.points = 1 Marks of ponding are less than 0.5ft (6in).points = 0 Score: 3 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…5/12 Wetland name or number: Wetland A D 4.3 What is the contribution of the wetland to storage in the watershed? The area of the basin is less than 10 times the area of the unit points = 5 The area of the basin is 10 to 100 times the area of the unit points = 3 The area of the basin is more than 100 times the area of the unit points = 0 Entire wetland is in the Flats class points = 5 Score: 0 Total for D 4:3 Rating of Site Potential [ ] 12-16 = H [ ] 6-11 = M [X] 0-5 = L Record the rating on the first page D 5.0 Does the landscape have the potential to support hydrologic functions of the site? D 5.1 Does the wetland unit receive stormwater discharges? Yes points = 1 No points = 0 Score: 1 D 5.2 Is >10% of the area within 150 ft of the wetland in land uses that generate excess runoff? Yes points = 1 No points = 0 Score: 1 D 5.3 Is more than 25% of the contributing basin of the wetland covered with intensive human land uses? Yes points = 1 No points = 0 Score: 1 Total for D 5:3 Rating of Landscape Potential [X] 3 = H [ ] 1-2 = M [ ] 0 = L Record the rating on the first page D 6.0 Are the hydrologic functions provided by the site valuable to society? D 6.1 Is the wetland in a landscape that has flooding problems? Flooding occurs in a sub-basin that is immediately down-gradient of the wetland.points = 2 Surface flooding problems are in a sub-basin farther down-gradient.points = 1 Flooding from groundwater is an issue in the basin.points = 1 The existing or potential outflow from the wetland is so constrained that water cannot reach areas that flood.points = 0 There are no problems with flooding downstream of the wetland.points = 0 Score: 2 D 6.2 Has the site been identified as important for flood storage or flood conveyance in a regional flood control plan? Yes points = 2 No points = 0 Score: 0 Total for D 6:2 Rating of Value [X] 2-4 = H [ ] 1 = M [ ] 0 = L Record the rating on the first page 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…6/12 Wetland name or number: Wetland A HABITAT FUNCTIONS These questions apply to wetlands of all HGM classes - Indicators that the site functions to provide important habitat H 1.0 Does the wetland have the potential to provide habitat for many species? H 1.1 What is the structure of the plant community? Aquatic Bed Emergent Scrub-shrub Forested Multiple strata within the Forested class (canopy, sub-canopy, shrubs, herbaceous, moss/ground cover) 4 structures or more points = 4 3 structures points = 2 2 structures points = 1 1 structure points = 0 No structures present points = 0 Score: 1 H 1.2 What are the hydroperiods that meet the size thresholds in the wetland? Permanently flooded or inundated Seasonally flooded or inundated Occasionally flooded or inundated Saturated only Permanently flowing stream or river in, or adjacent to, the wetland Seasonally flowing stream in, or adjacent to, the wetland Lake Fringe wetland Freshwater Tidal wetland 4 or more types present points = 3 3 types present or Lake Fringe / Freshwater Tidal Fringe points = 2 2 types present points = 1 1 type present points = 0 None present points = 0 Score: 2 H 1.3 What is the richness of the plant species in the wetland? >19 species points = 2 5-19 species points = 1 <5 species points = 0 Score: 2 ✔ ✔ ✔ ✔ ✔ 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…7/12 Wetland name or number: Wetland A H 1.4 What is the interspersion of habitats? High points = 3 Moderate points = 2 Low points = 1 None points = 0 Score: 3 H 1.5 What are the special habitat features in the wetland? Large, downed, woody debris within the wetland (>4in diameter and 6ft long). Standing snags (dbh >4in) within the wetland Undercut banks are present for at least 6.6ft (2m) and/or overhanging plants extend at least 3.3ft (1m) over open water or a stream (or ditch) in, or contiguous with the wetland, for at least 33ft (10m) 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 0.25ac 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) 6 habitats selected points = 6 5 habitats selected points = 5 4 habitats selected points = 4 3 habitats selected points = 3 2 habitats selected points = 2 1 habitat selected points = 1 No habitats selected points = 0 Score: 3 Total for H 1:11 Rating of Site Potential [ ] 15-18 = H [X] 7-14 = M [ ] 0-6 = L Record the rating on the first page H 2.0 Does the landscape have the potential to support habitat functions of the site? H 2.1 What is the percentage of accessible habitat within 1km of the wetland? >33% of 1km Polygon points = 3 20-33% of 1km Polygon points = 2 10-19% of 1km Polygon points = 1 <10% of 1km Polygon points = 0 Score: 0 H 2.2 What is the percentage of total habitat in a 1km polygon around the wetland? Total habitat is >50% of the Polygon points = 3 Total habitat is 10-50% of the Polygon and in 1-3 patches points = 2 Total habitat is 10-50% of the Polygon and in >3 patches points = 1 Total habitat is <10% of the Polygon points = 0 Score: 1 ✔ ✔ ✔ 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…8/12 Wetland name or number: Wetland A H 2.3 What is the land use intensity in the 1km polygon? 50% of the Polygon is high intensity land use points = -2 <50% of the Polygon is high intensity land use points = 0 Score: -2 Total for H 2:-1 Rating of Landscape Potential [ ] 4-6 = H [ ] 1-3 = M [X] 0 = 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? Aspen Stands Biodiversity Areas and Corridors Herbaceous Balds Old-growth/Mature Forests Oregon White Oak Riparian Westside Prarie Fresh Deepwater Instream Nearshore (Coastal, Open Coast, Puget Sound) Caves Cliffs Snags and Logs Talus The following criteria automatically score 2 points: The wetland provides habitat for Threatened or Endangered species The wetland is mapped as a location for an individual WDFW priority species The wetland is a Wetland of High Conservation Value The wetland has been categorized as an important habitat site in a local plan The wetland has 3 or more WDFW priority habitats within 100m, or meets the criteria for societal value points = 2 The site has 1 or 2 WDFW priority habitats within 100m points = 1 The site does not meet any of the criteria for societal value points = 0 Score: 2 Total for H 3:2 Rating of Value [X] 2 = H [ ] 1 = M [ ] 0 = L Record the rating on the first page ✔ ✔ ✔ 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=De…9/12 Wetland name or number: Wetland A CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS SC 1.0 Estuarine Wetlands SC 1.1 Does the wetland meet all of the following criteria for Estuarine wetlands? The dominant water regime is tidal The wetland is vegetated The water salinity is greater than 0.5 ppt Yes - Go to SC 1.2 No - Not an Estuarine Wetland Result: SC 1.2 Is the wetland within a National Wildlife Refuge, National Park, National Estuary Reserve, Natural Area Preserve, State Park or Educational, Environmental, or Scientific Reserve designated under WAC 332-30-151? Yes - Category I Estuarine Wetland No - Go to SC 1.3 Result: SC 1.3 Is the wetland unit at least 1ac in size and meets at least two of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 10% cover of non-native plant species. At least 75% of the landward edge of the wetland has a 100ft buffer of shrub, forest, or un- grazed or un-mowed grassland The wetland has at least two of the following features: tidal channels, depressions with open water, or contiguous freshwater wetlands. Yes - Category I Estuarine Wetland No - Category II Estuarine Wetland Result: SC 2.0 Wetlands of High Conservation Value SC 2.1 Is the wetland listed by Washington Natural Heritage Program WDNR as a Wetland of High Conservation Value (WHCV)? Yes - Category I Wetland of High Conservation Value No - Go to SC 2.2 Result: SC 2.2 Does the wetland have a rare plant species, rare plant community, or high-quality common plant community that may qualify the site as a WHCV? Yes - Category I Wetland of High Conservation Value No - Not a Wetland of High Conservation Value Result: 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=D…10/12 Wetland name or number: Wetland A SC 3.0 Bogs SC 3.1 Does an area within the wetland unit have organic soil horizons, either peats or mucks, that compose 16in or more of the first 32in of the soil profile? Yes - Go to SC 3.3 No - Go to SC 3.2 Result: SC 3.2 Does an area within the wetland unit have organic soils, either peats or mucks, that are less than 16 in deep over bedrock, or an impermeable hardpan such as clay or volcanic ash, or that are floating on top of a lake or pond? Yes - Go to SC 3.3 No - Not a Bog Wetland Result: SC 3.3 Does an area with peats or mucks have more than 70% cover of mosses at ground level, AND at least 30% cover of plant species listed in the table provided in the instructions? Yes - Category I Bog Wetland No - Go to SC 3.4 Result: SC 3.4 Is an area with peats or mucks forested (>30% cover) with Sitka spruce, subalpine fir, western red cedar, western hemlock, lodgepole pine, quaking aspen, Engelmann Spruce, or western white pine AND any of the species (or combinations of species) listed in the table found in the instructions provide more than 30% of the cover under the canopy? Yes - Category I Bog Wetland No - Not a Bog Wetland Result: SC 4.0 Forested Wetlands SC 4.1 Does the wetland have at least 1 contiguous acre of forest that meets one of the following criteria? Old-growth forests Mature forests Yes - Category I Forested Wetland No - Not a Forested Wetland Result: 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=D…11/12 Wetland name or number: Wetland A SC 5.0 Wetlands in Coastal Lagoons SC 5.1 Coastal Lagoons: Does the wetland meet all of the following criteria of a wetland in a coastal lagoon? The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from marine waters by sandbanks, gravel banks, shingle, or rocks The depression in which the wetland is located contains ponded water that is saline or brackish (>0.5 ppt) during most of the year in at least a portion of the open water area (measured near the bottom) Yes - Go to SC 5.2 No - Not a Coastal Lagoon Wetland Result: SC 5.2 Does the wetland meet all of the following three conditions? The wetland is relatively undisturbed (has no diking, ditching, filling, cultivation, grazing), and has less than 20% cover of aggressive, opportunistic plant species (see list of species). At least 75% of the landward edge of the wetland has a 100ft buffer of shrub, forest, or un- grazed or un-mowed grassland. the wetland is larger than 0.10ac (4350 sqft) Yes - Category I Coastal Lagoon No - Category II Coastal Lagoon Result: SC 6.0 Interdunal Wetlands SC 6.1 Is the wetland west of the 1889 line (also called the Western Boundary of Upland Ownership WBUO)? Yes - Go to SC 6.2 No - Not an Interdunal Wetland Result: SC 6.2 Is the wetland 1ac or larger in size, or a mosaic that is 1ac or larger in size? Wetland is larger than 1ac in size - Go to SC 6.3 Wetland is a mosaic larger than 1ac is size - Category II Interdunal Wetland No - Go to SC 6.4 Result: SC 6.3 Does the wetland score 8 or 9 points for the habitat functions? Yes - Category I Interdunal Wetland No - Category II Interdunal Wetland Result: SC 6.4 Is the wetland unit between 0.1ac and 1ac, or in a mosaic of wetlands that is between 0.1ac and 1ac in size? Yes - Category III Interdunal Wetland No - Category IV Interdunal Wetland Result: 11/1/23, 4:37 PM Wetland Rating Summary https://test-secureaccess.wa.gov/ecy/wetlandsratingtool/WATOR/WetlandSummary?WetlandId=11137&WetlandName=Wetland A&WetlandType=D…12/12 Wetland name or number: Wetland A Category of wetland based on Special Characteristics If you answered No for all types, enter "Not Applicable" on Summary Form Final Category: Not Applicable 2014 Ecology Wetland Rating Form Figures PROJECT/SITE N AME Wetland A (Depressional) ............................................................................................................................. 1 Figure 1. Cowardin plant classes – D1.3, H1.1, H1.4 ................................................................................ 1 Figure 2. Hydroperiods, outlet(s), and 150-ft area – D1.1, D1.4, H1.2, D2.2, D5.2 .................................. 2 Figure 3. Map of the contributing basin – D4.3, D5.3 .............................................................................. 4 Figure 4. Undisturbed habitat and moderate-low intensity land uses within 1 km from wetland edge including polygon for accessible habitat – H2.1, H2.2, H2.3 .................................................. 5 Figure 5. Screen-capture of 303(d) listed waters in basin – D3.1, D3.2 ................................................... 6 Figure 6. Screen-capture of TMDL map for sub-basin in which unit is found – D3.3 ............................... 7 Page left blank intentionally to allow for duplex printing. Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 1 WETLAND A (DEPRESSIONAL) Figure 1. Cowardin plant classes – D1.3, H1.1, H1.4 Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 2 Figure 2. Hydroperiods, outlet(s), and 150-ft area – D1.1, D1.4, H1.2 Outlet Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 3 Figure 3. 150-foot area- D 2.2, D 5.2. Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 4 Figure 4. Map of the contributing basin – D4.3, D5.3 Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 5 Figure 5. Undisturbed habitat and moderate-low intensity land uses within 1 km from wetland edge including polygon for accessible habitat – H2.1, H2.2, H2.3 Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 6 Figure 6. Screen-capture of 303(d) listed waters in basin – D3.1, D3.2 Features depicted are not to scale. Sketches are based on available data and best professional judgment. Wetland Figures - 7 Figure 7. Screen-capture of TMDL map for sub-basin in which unit is found – D3.3 Wetland unit located in the May Creek basin (HUC = 171100120400)