1710 121ST ST SE 2016-01-01 MF Import

wedands wiU not signi6canQy affect the hydrology (storm water storage) of the site because the hydrologic function has already beea altered by past fill activities. T6e propc�sed fill activiry will, however, elimiaate the hydrologic functions that aow wdst in the 0.24 aaes of unfilled wedand. Wildlife value of the filled wetland is very limited because of the aparse vegetation and Iack of suitable soil. 'Itie unfilled wetland contains some standtng water and supports vegetadoa suitable for waterfowl and seed-eating songbirds. 'Ibe wedand area at the southem end of the site wiU not be significantly disturbed by the projecK. A small comer of the wedand (0.03 acros), consisting of 6ydric soils aad mowed grasses, will be lost by conswctian of a four-plez uniG This 0.03-acre 6gure is included in the 0.24-acre total listed above. Remaining wetland areas will be either maintained or enhancxd. PROPOSED MITIGATION Type and [.ocation ot Mitfgation Wedand loss will be mitiqated by: 1) creating 0.25 acres of wedands from existing uplands; 2) enhancing 0.11 acres of existing wetlund; and 3) enhancing .03 acres of riparian habitat along Silver Lake Creek. Figure 3 shuws the proposed pian. Wetland Creatfon Wetlands will be created on the wet pcoperty boundary and just north of the wdsdag pond at the southwest corner of the property (Figure 3). P.xisdng upland areas will be excavated to elevations comparable with the pond and Silver iake Creek channel. The new wedand area will be lined with peat and organic ,�oils excavated from the wetland area to be filled. Habitat to be created will include open water and stands of emergent and shrub vegetation (e.g., burreed, spiraea, etc.). Wetland Enhancement Wetland enhancement will be carcied out on the edge of the eicisdng pond at the southwest corner of the properry along Silver Lake Creek (0.03 aaes) sed on the northwest corner of the property (0.01 acres). This will include plandng of proferred wildlife wetland and riparian species such as mttonwood, red osier, dogwaod, crabapple, willow, aad wild rose. �3 �