11419 19TH AVE SE SITE DEVELOPMENT 2016-01-01 MF Import

i � Nden��o-id-Urb.m I�uid cum�ilcx is about GO perccnt Aldcnvou�l ertir�lly ;ancly loam and ahou� 2i �,crccnt lirb.ui land. Aldcnvood soil is modcratcly �Icc�� uvcr ;i har<Ip<m .�nd is modcratcl�� wcll draincd. Pcrmcability of thc Aldcrwood soil is mudcratcl�� ra��id abn��c the � hau•dpan and s!ow throu,�h it. �Vdcrwood is not listed as unit are small .ircas ol� �9cKenn�i and Norma soils, and 7'erric Medisaprists in depressiontil areas and dr.�ina�c �v:rys un plains. McKenna, Norma and '1'erric i�(edis<tprists are deep, 1 very porn•ly ch•ained soils and are listed as hydric on tl�e Snohoinrsh Cuirnty Hi�rlric Soils List. 'I'he Urban-land design;uion is used whenever land use such as shects, buildings, parking Iots � or other slructures alter or obscure the soil, rendering soii identification impossible. The Urban land designation precludes the use of die Snohomish County hydric soils list for die determination of the presencc of liydric soiis. � Hydrology � Primary hydrologic support for the wetland appears to be runoff and precipitation. Some II lateral movement o� water to and from the lake occurs during high flows. Additional � hydrology is derived from runoff on SR-527. According to the Washingto�r Catalog of Streanrs a�rd Salmon Usage (1975), the wetland on the site is not connected with a known salmon bearing stream within the Snohomish River Basin (WRIA 07). I �xisting rauna IThe p�nd and its associated buffer provide suitable habitat for a number of species accustomed to human activity. A number of ducks and mallards were observed during field visits to the site and it is anticipated that the pond supplies habitat for a variery of amphibian Ilife as well as suitable habita[ for small mammal watering, cover and breeding. runctions and Valucs Wedands are valuable namral resources that aid in pollution control, water attenuation, ground water recharge and storage, and in higher stages, provide wildlife habitat, and aesthetic qualities. The ponded wedand on this site provides moderate levels of the above; however, given the de;ree of historical human disturbance, the site functions at less than I optimum levcls. The opportunity exists for substantial enhancement of these qualities. 1'0 accomplish the enhancement, the cntire buffer of the wedand will be enhanced with the exception of the western edge adjacent to SR-527, wliich is scheduled for widening in 1999. I I � W�TLANDS 1'he Nntroirn! Wednnds brve�no�y (NWI) has evaluated �vedands throu�hout the E��erett quadrangle �.�sing the system described in Clns�ification of Deep�t�ater Hnbitnrs of tke Unried Strnes (Cowardin ]979). Onc wcdand (the pond), identified as palustrine scrub-shrub. Kmreri.r 1'roperlv -- Finn1 {Vcrinud�1/itigntion Plm� Page � �� �I 1'rcparcd by SIIOC61i1�IlilLli\"1'. Inc �GK:�NPlLdnd