4719 BELVEDERE AVE 2016-01-01 MF Import

Condusion: The area that is mapped as wetland meets all three parameters for classification as wetland according to the WashinRton State Wetlands Identification and Delineation Manual, 1997 edition. Non-wetland The forested non-wetland area on•site is dominated by red alder (Alnus rubro, Fac�, big•leaf maple (Acer mvcrophyllum, FacU), Western hemlock (Tsuqo he[erophylfa, FacU-), Western red cedar (Thuja plicata, Fac), salmonberry (Rubus spectabilis, Fac+), Himalayan blackberry (Rubus ciiscolor, FacU), red Flderberry (Sambucus racemosa, FacU►, stinging nettle (Urticv dioica, Fac), and false lily-of-the•valley (Maianthemum dilatatum, Fac). Soils were dry at the time of inspection and range in color from dark brown (10YR 3/4) to dark yellowish brown (10YR 4/4). Soil samples taken in the non- wetland areas do not meet the criteria for hydric soils. FUNCTIONS AND VALUES ASSESSMENT Methodology The methodology for this functions and values assessment is based cn professional opinion developed through past field analyses and interpretation. Tfii: assessment pertains specifically to the on•site wetland and stream system, bu: is typical for assessments of similar systems common to Western Washington. Wetlands in Western Washington perform a variety of ecosystem functions. Induded among the most important functions provided by wetlands are s[ormwater control, water quality improvement, and fish and wildlife habitat. Stormwoter Storage/Flood(low A[tenuation The on-site wetland has potential to provide a small amour�t of stormwater storage and floodflow attenuation for local overland flows based on its small size and posi[ion in the landscape. It performs like a sponge during storm events, holding and slowing water rather than allowing it [o quickly flow downslope. This function aids in providing hydrology to the on-site stream during dry periods, extending the hydroperiod of the stream. Woter Quality The wetland has potential to increase water quality as hydrology passes through it by acting as a natural filter. Woody vegetation within the wetland uptakes overloaded nutrients and helps drop solids from suspension. Additionally, the vegetation within the wetland causes hydrology to slow, increasing the chance that suspended solids will drop out. Thi� function is limited by the location of the channelized streams that decrease runoff time and by the relatively small size of the wetland. Wildlife Habitat The wetland and streams provide moderate potential for wildlife habitat. Species such as passerine birds, small to large mammals, and amphibians are expected to King Residence 5 WRI If06190 Critica( Area 5[udy -- Rev. #2: April 23, 2007 �'�� > �