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Wetland Delineation Report June, 2015 South Everett Forest Preserve ©2015 Perteet Inc. StreamNet maps. StreamNet indicates that chinook salmon utilize North Creek (spawning, rearing, and migration) but no salmon are reported to occur in Silver Lake Creek upstream of Silver Lake. SalmonScape is a similar online GIS database maintained by the Washington Department of Fish and Wildlife (WDFW) as a public information resource for fish population studies and general species distribution (WDFW 2014a). The SalmonScape maps do not indicate the presence of any fish in Silver Lake Creek. 2.5 WDFW Priority Habitats and Species (PHS) Data The WDFW Priority Habitat and Species program shows the same wetland complex mapped on the City of Everett critical areas map extending north from the South Everett Forest Preserve property to past Bruskrud Road (WDFW 2014b). The general area is also mapped for little brown bat (Myotis lucifugus) communal roost habitat. Chapter 3. Methods 3.1 Wetland Determination and Delineation Wetlands were delineated in accordance with the U.S.Army 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 (Corps 2010). Pursuant to the Washington Administrative Code (WAC), section 173-22-035, wetland delineations under Growth Management Act (GMA) jurisdiction in the State of Washington should be done according to the currently approved federal manual and supplements. The routine wetland determination method outlined in the Corps manual was used to perform this wetland delineation. This methodology utilizes a three parameter approach for identifying and delineating wetlands. These parameters include positive indicators for hydrophytic vegetation, hydric soils, and appropriate hydrology. An evaluation of the vegetation, soils, and hydrology was made along the interface of wetlands and uplands in order to delineate the wetland boundary. Plant species were identified according to Hitchcock and Cronquist (I 990), Pojar and MacKinnon (2000), and A Field Guide to the Common Wetland Plants of Western Washington and Northwest Oregon (Cooke 1997). The status of plant species was assigned according to the list of plant species that occur in wetlands for Region 9, (USCOE 2012). A professional survey of the wetland boundaries was performed. Results are described in Chapter 4. The vegetation and overall condition of wetland buffers within approximately 100 feet of the wetland boundaries was also qualitatively assessed. 3.2 Wetland Rating and Classification The Washington State Department of Ecology Wetland Rating System for Western Washington (Hruby 2004, 2008), or state rating system, was used to rate wetlands identified in/near the project area. The City of Everett Municipal Code (Title 19, Chapter 37. 090) requires the use of the state rating system for rating wetlands. Wetlands identified within/near the project area were classified according to the U.S. Fish and Wildlife Service (USFWS) classification system (Cowardin et al. 1979). Vegetation class, hydrologic regime, substrate, salinity, and other features are evaluated as part of the USFWS system. In addition, the hydrogeomorphic (HGM) system (Brinson 1993) was also used to classify wetlands within the project area. The HGM method is based on three primary factors: position in the landscape (geomorphic setting), water source (hydrology), and movement of water through the wetland Page 7