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( <br /> r7.10 MONITORIN(i OF WETLANDS B AND C <br /> � Mor�taNp d Wetl�nd�B end C le requked lor Me new�a. (1)A me�a rs�wn b to detem*b tM <br /> ths hyd►dopc rpinb dMt ronAft aRx ths�aln�xlon d ths�dJecM�t MAdkpt, raads.P�►Mn0�rset, <br /> end aaocleted hdltbe wAI w;+tNwe to wppoA thoes wMl�nda (2) The monkaNq h dw to detect <br /> � K eroelo�occurs ae a rseuM d etortn Ilowe a N dyrqs�In the hyd►ops►lod ePPs�r to bs chenpirq ths <br /> cherode►d ths wetlend. M wch eflecte oca►.oonikqency msesixee cen bs rocanrtbnded to corroct <br /> ths P►oblems. (3) Sk�ce treeted perklnU lot nnoR b � a►ps part d the planned wefx kKxR M the <br /> r wedand�� moMtakq d the Mllow h requNed to�how dNt k msett State water quelky W�derd�. (�) <br /> I 3ane pl�ntinp fa eddkionel er�hencerr�erR wdMn ths wetlende hes been required, vM�lch wN need <br /> monkorkq of ks eucceee. (5) In eddkion, monitorkq d Wetland B ie reqWred as a rderer�ce wetlend, <br /> � alonp wkh Wedend A, fa the new created wetlend in Powder MN(iulch to eathfy condkione aeked lor <br /> by the WseMrqto� Depertment d Ecdopy,Wetlende Sec:tlon. <br /> 1 Becauae of same dMlerences, monRakp lor the two wetlerde is deecrlbed eepn►etely below. <br /> 7.10.1 yVedend B <br /> � 7.10.1.1 Hydralopy <br /> ' .Q�lK4a The ob�ectivee d hydrdopy maiRorNg at Wetlend B are to evatuete whether weter <br /> Mput wIN romein sURcbnt to mekAeln e ekr�Aar hydrdopic'spN��s comPerod to ths�ciethq wedend and <br /> � whether chenpes In Ilow Nrteneky end du►edon hrvs ellec;t�tMt waAd depreds the wetland fixictlond <br /> valuee. Ths resulte d ths moMtakq wNf Mlow dechbne to be mede to Nnplernxrt conthqency <br /> meaeuree to correc� nwade probleme. <br /> � lQI,�. The InAow volumee and retes Mve besn crcul�ted ueinp the EPA 8WMM model, vereion <br /> 4.05 (Enperdo�m syeteme, �nc., 199t�. rne caw araM.Os.roa, betoro tne etart a,�wmcn,ccion ror che <br /> � olNce complex, was 14.16 acren. From thet dnirrps ue�, the modeled peak Ilow ratee throuph tly <br /> wetla�d han iedated stama are 0.11 c(s from e 2-yser portn, 1.94 cfe hom a 9.b-yeer porm, and 3.�1 <br /> cfe fa e 100•year etortn. The total ruraM vdume►anpes hom 0.0010 ecre-feet fa s 2-yeer etortn to <br /> � 0.1889 acre-leet fa e 25•yeer etam end 0.3807 acre-feet fa e 100•yesr ttortn eve�t. Addklonei weter <br /> would reach the wetle�d by dower movertient thraqh the soA. Sk�ce the weCand hee a'lip'et elevatbn <br /> bt�,k hee a netural deteMlon cepecRy eetNrrled to bs�boul one acre-foot. Aher a dry pe�iod, k wa�ld <br /> I take a perlod d raM before the wetlend wald bs seturated end the outlet wald ova Ilow. Mer the <br /> system la eaturated,each s�xxeedinp etortn woild ect mrre Iike R wse faNirq on an hripervkw�e wrfaoe, <br /> and the►ate d Ilow wald be hipher then 1M rtwdeled rete. At the end d the wet neseon,the weuend <br /> � wNl praduaNy dry up as evapotranepiratlon rertiovse watx hom the eo1. Tha wetlend plente do moet <br /> of their provving durinp the period when the wetlend b dryirp up. The me�orky of the tNne when the <br /> w3dand has atandinp water Is du�ing the perlod d dormancy fa the plaMe. <br /> ' ARer developrt�em d the of�Ce complez,the toW drok�epe area wpl Include 7.59 pe�vbua aaee end <br /> 18.33 Impervloua ecrea. The Ilow ratea wNl kroro�ee ta 9.22 da(or e 25-yecr etortn end 12.18 de fo► <br /> ' a 100-year stortn. The modded ouMow Is lov�er (9.n de for the 100-�rear etorm►. The wetlend <br /> � r.�w�-�u��w.�w.w � <br /> IDwMea r�Mooae <br />