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Tree iD' Tree Species Tree Siie(dbh' <br /> 11 Black collonwood 24-30-inch <br /> �Z Blackcottonwood 24-3Qinch <br /> �3 Weslem red cedar 8-inch <br /> 14 Westem red cedar 12-inch <br /> 15 Black coflonwood 40-inch <br /> i6 Quakin as en 12•inch <br /> 'Tree ID#corresponds to tree numbering on Atlachment C. <br /> 3.6 PROPOSED Nil'I'IGA'CION CONCEPTS <br /> Unpacts to 655 square fcet of Wetland A will be mitigated by cre:ding 1,043 square feet of�vetland <br /> within existing degraded arcas adjacent to Wedand A (Appendix D). This �vill result in a 1.5:1 <br /> mitigation ratio. Thc wctland crcation arca will Uc contourcd so that it provides al Icast as much <br /> stonmvater retention volume as the impacted wetland. The 79U square fect of Wedand A and the <br /> 2,642 squarc feet of wetlancUstrcam buffer that will be encroached upon during conswction will be <br /> restorcd along with thc entire strcam comdor(Appcndix D). The created poriion of Wetland A will <br /> bc plantcd with native trccs, shrubs, and emergent ��cgetation to improve plant specics and <br /> stn�c�ural diversity. Thc remaining 2,G28 square feet of Welland A and 15,890 square fect of <br /> strcan�/wetland buffer will be cnhanced through thc removal ef invasive spccies such as Himalayan <br /> blackbcrry and planting �vith native trees xnd shrubs. "Chc segment of strcam that passes through <br /> Weda�id A will be shi[ted sli�irily so th�l it passcs through lhe wetland crcation area. The cntire <br /> strcam channel will be rc-constn�cted to simulate a more natural channel configuration. A gavel <br /> stream suUstrate will Ue estaUlished and habitat componcnts such as rocks, boulders, and largc <br /> �voody debris (LWD)will bc addcd along thc channcl to improvc habitat quality and divcrsity. <br /> 3.(.1 �Vetland r�mclion Replaccmcnt <br /> 'Ihe foliowing analysis compares the e�isting wctland/stream functions to tlie :mticipated <br /> wctlancllstremn fimctions resulting from thc proposed impacts and implementation ofthe mitigation <br /> mcasures identificd in thc encloscd conceptual mitiy�ation plan. '1'he intent of this analysis is to <br /> demonstratc how the proposcd sitc dcvclopment is consistent with the requirements of Section <br /> 3Z110.B.5.c oCthc City of L'vcrctt Zoning Codc. Scction 37.110.B.5.c allows impacts to �vedands <br /> wiQiin thc Silver Lake Watershed "ivhen d�e npplicnnl demonsuntes to d7e sntisfnctiwi oj the <br /> plamiing drreclor rmd pub/ic rvorks r(irector lhnl such ncdvitins will result in nn enhnncement oj <br /> n�ednnds ivhicL r»�proves d�e x�nrer q�mlity fi�nclions of tlie ivellcmd, or tivi!! iniprove Ihe other <br /> f OiCIlOAS Of/I/C 11'C(I[!A(I ljivater�/imfiq�wi(/no�Ge dcgrnde�l." <br /> Ecisting Condilions <br /> The Silver Lake Center property has experienced consideraUle dishirUance including cicaring, <br /> grading, and dcvclopmeni, both on-sitc and in adjacent oft=sitc areas. The site is now dominated by <br /> �veed spccies such as Flimalayan blackbcrry, Scot's broom, and bentgrass. Trcc distribution is <br /> limited on-sitc and consists primarily of young red alder, quaking aspen, black cottomvood, and <br /> young Douglas fir in scattered locations. The sitc is fiirther degraded Gom on-going trash dumping. <br /> Il9LVIIVOL I1DOG�FEAI{'RGJECPbi0DL5'BOlIJ-07I710Y JUeh'ReNsed WetlanJ RepM Juy 7041 duc <br /> ticnsiti��c Arcas Bvalua�ion 1 I luly 2004 I f/ <br /> Silver lakc Ccnlcr Property � <br />