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WETLAND AND STREAM CLASSIFICATIONS - CITY OF EVEREff Under the City of Everett's critical areas ordinance (Ordinance #2909•06), the on-site wetland and streams are dassified as follows: Stream A IPhilli s Creek : Type Np stream. This stream is classified as a Type Np stream because it is perennial, it is not a shoreline of the state, and it is not used by salmonids. Type Np streams are typically designated 50-foot protective buffers when bordered by nati��e vegetation. Stream B: Type Ns stream. This stream is dassified as a Type Ns stream because it is intermittent, it is not a shoreline of the state, and it is nct used by salmonids. Type Ns streams are typically designated 50-foot protective buffers when bordered by native vegetation. Wetland: Category III. The on-site wetland is classified as a Ca[egory III wetland because it scores between 30 and 50 points on the Department of Ecology's Wetland Rating Form-Western Washington. The score for habitat value is under 19 points, so the rypical buffer for this wetland is 60 feet. When the outer edges of stream and/or wetland buffers lie on steep slopes (>25%►, the buffers are extended to 25 feet beyond the point where the slopes become less than 25'X�. WETLAND DETERMINATION REPORT Methodol�: On site, routine methodology as described in the Washin4ton State Wetlands Identification and Delineation Manual, 1997 edition, was used for this determination, as required by the City of Everett. Under this method, the process for making a wetland determination is based on three sequential steps: 1►Examination of the site for hydrophytic vegetation (species presence and coverage); 2) If hydrophytic vegetation is found, then the presence of hydric soils is determined; 3) Determination of the presence of wetland hydrology in the area examined under the first two steps. Vegetation Criteria The Wasiiinuton State Wetlands identification and Delineatiun Manual, 1997 edition, defines hydrophytic vegetation as the sum total of macrophytic plant life that occurs in areas where the frequency and duration of inundation or soil sa[uration produce permanently or periodically saturated soils of sufficient duration to exerl a controlling influence on the plant species present. One of the most common indicators for hydrophytic vegetation is when more than 50 percent uf a plant community consists of species rated as "Facultative" or wetter on plant species lists. King Residence 3 WRI 1t06290 � Critical Area Study Rev. #2: April 23, 2007 �� � I �