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f <br /> I5.2 CREATED WETUND OVERVIEW <br /> ( To cartipenmte fa propoeed wetland impecte� propoaed mltipeHon wald Incroses end <br /> consdldets aveMade acroepe and hxwtlor�el valuee In the ereea d weter QudkY knprwertierK,llood Ilow <br /> moderatlon.and bidoqical wppoA. Thls plen propoess to edd an area d mbced wetlends�d�ecerR�nd <br /> ( cor�nected to peet NRretlon wetlande wMch are pert d the etamwater quMky enhencement syetem. <br /> i Theee canpensetlon wetlende wIM be eunourded by e propoeed uperd hebllat metrbc to be plentei, <br /> end In tum wIN bs connected to e �ructed atreem chennN edJeoent to the mbced wetlends. The <br /> � con�n�cted etreem wAI elso be connec.Yed to Powder MM Geek. Peat wetlende hs�re alreedy been <br /> conatnkted erd ere coneidered pen d the aseocieted etortn water treatment syetem and ea wch ere <br /> nd induded M the defaNed wedard mkigetbn wak plen. <br /> I5.3 EXCAVATION AND DRAINAGE <br /> I The overell hydrolopy obJedhre Ia to heve a wetland eyetem that tekee M treated etam water hom <br /> the peet/eend fNtero, retslna K to maintaM wetlend hydrolopy, end diecherpes R vle the enpN�eered <br /> ' streem to Powder MN Geek. At the eeme tkne, proixid wale► hom the dope weet d the aeMed <br /> wedand wIN be coHected In a drelnege syrtem to help steWize the dope and routed to ths heed d the <br /> erpMeered streem to eupplertbrR the etreem Ilow. TMs recxlon dsecrlbea ths phyakk�ll menlpiAstion d <br /> ' the eNe end the water to aa:omplleh the hydrolopy ob�eClNea. <br /> 6.3.1 WMer Sourcea end AmouMs <br /> ' The 4x1►nery eurface water eaxce for the wetlend la the etam water eyetem thst CoMects nlnoM <br /> hom s me�a part d the Boelnp Everett eke and diecherpee to the sedlmeMetion bedn at the upper end <br /> I d Powder MNI(iUch. The minlmum emax�t d weter In the�yatem b aboul 0.6 cubic foot per�scond <br /> (cie)hom p►knery codlrq weter that eecapee from verious facMklee. The tyetem b desipned to route <br /> the rundf hom etama to the eedimentetlon bestn up to ke capecky,then�Ma�t ths sxceee lo ths lerps <br /> � detention besin loceted belween the eedNnerNetio�beeM end a pely d peet/tend fNten. The detention <br /> besln dlecharpee direcdy to the head d PoMMer MN Gsek and le deeipned to diecherps e nrxNr�um <br /> of 49 cfe durinp storma up to the 25-year stortn In elze. Laryer storms wIN peee over the detentlon beain <br /> � $p��way b the�reek. <br /> The weter wNl go to the creeted wetlends hom the sedirtientetlon beein vle a t2�k�ch pipe tl�et <br /> I feeda the two peat/eard tWers vle a Bow•aplitter box The size of the pipe Ilmlte the 11ow to e rarqe d <br /> 4 to e cfa,dependinp on the depth d water in the sedirtientatlon bealn. Therefore,the peet/eand fNtere <br /> ahoukl recelve ell d the runMt Ilow du�iny dry weather e�d any emell reina thet produce nmoM tl s rate <br /> ( up to 8 cfs. During lerper rundl events, a mezlmum d 8 cfa wNl yo to the wetlend. <br /> The ground weter that wNl be cdleded in the drainepe eyetem to help WbNize the dopes wM be <br /> routed dlrectly to the onpineered etream to help mekMein ftream Ilow ard tempereture. The rtwdmurn <br /> l flow expected Is lesa than 0.2 cfa during wet wtrtte►weather. The minimum Ilow Is lesa certaln. The <br /> lowertnoat pipe wNl be below the measured qround wete► level wlth the hrterK d meMlekdng e <br /> 1 cominuous Now. However,the data avaNade on grourd water level ie not complete erwuph to be aure <br /> I �.ww.�u�r.�r.w 12 <br /> � DAMES A MOORF <br />