9425 18TH AVE W 2018-01-01 MF Import

CMI Homebuilder's Inc. WeIIaM Delineation and Pacific willow (Salix lasiandra), Sitka willow (Salix sitchensis), salmonberry (Rubus spectabilis), spirea (Soiraea douglasii), sk�mk cabbage (Lysichitum amencanum), lady fern (Athyrium filix- femina), and creeping buttercup (Ranunculus repens). The plant cornmunity within the on-site buffer of Wetland A consists largely of a deciduous forest dominated by red alder, salmo�iberry, red elderberry (Sambucus racemosa), sword fem (Polystichum munitum), and trailing blackberry (Rubus ursinu.$). Vegetation adjacent to the disturbed northern portion of the wetland consists primarily of Himalayan blackberry (Rubus discolo� and a row of young Douglas fir (Pseudotsuga menziesii) along the ditch bank. At the time of the December 1997 field investigation, soils witY; n the wetland generally consisted of a muck that was saturated to the surface, with several inches of ponding observed in places. Wetiand A is a Category II wetland according to Section 37.090 of the City oi EveretYs Sensitive Areas Ordinance. Category II wetlands generally require a 75-foot buffer. 5.0 WETLAND FUNCTIONS AND VALUES Wetlai ids, in general, provide many valuable ecological and social functions, including storm�.tiater storage, water quality protection, groundwater recharge and discharge, and wildlife habitat. A functional value assessment was con�ucttd for Wetland A to gain a general understanding of the presence and relative importance of specific wetland functions for this wetland. The functional value assessment was based on the methodology presented in the Wetland and Buffer Functions Semi-Quantitative Assessment Methodology, D,aft Users Manual, May 1997. This mettiooelogy, which was prepared by Szrah Spear Cooke of Cooke Scientific Services, assigns numerical values to the physical, biological, and human use characteristics of wetlands, and empioys best professional judgment. It should be noted that this assessment is meant to be used as a general guideline, and is not intended to be used to assign an absolute value to the function within a given wetland area. Appendiz B contains functional assessment data sheets for Wetland A. A summary of the relative value of the specific functions for this wetland is presented in i'able 1. It appears inat Wetland A functions primarily as wildlife habitat and as a stormwater storage area. The wetland also serves to maintain water quafity in the project area, and may provide some baseflow support to downstream areas. TABLE 1: Wetland A Functional Value Function 11Q 11� N/A' � 11 (max 21 <0 May 2003 364C-IAitR pt4(20May03).doc Consultants, LLC Page3 '%3d