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4) Ifpondingisused,thedesignmustincludeanappropriatecombinationofmeasures <br />suchasshading,vegetatedswaledischargesorconstructedwetlandtreatmentcells <br />thatlimittemperatureincreases.Thepondmustbedesignedasadrypondand <br />shoulddrawdownin24hoursorless;and <br />5) Othermethodsthatminimizeanyincreaseinthetemperatureofthetroutstream. <br />Note:Itemsvi.15areonlyrequiredifyouhavedischargestoatroutstreamwithinyourjurisdiction. <br />viii. OffsiteTreatment ΝLƷĻƒƭЋЉ͵ЊЉЋЉ͵ЊЍΞ <br />1) Fornonlinearprojects,wherethewaterqualityvolumecannotcosteffectivelybe <br />treatedonthesiteoftheoriginalconstructionactivity,theremainingwaterquality <br />volumemustbeaddressedthroughoffsitetreatmentandmeetthefollowing <br />requirements(mustbeselectedinthefollowingorderofpreference): <br />a) Locationsthatyieldbenefitstothesamereceivingwaterthatreceivesrunofffrom <br />theoriginalconstructionactivity. <br />b) LocationswithinthesameDNRcatchmentareaastheoriginalconstruction <br />activity. <br />c) LocationsinthenextadjacentDNRcatchmentareaupstream. <br />d) Locationsanywherewithinthe Cityof/ĻƓƷĻƩǝźƌƌĻ͸ƭ jurisdiction. <br />2) Offsitetreatmentprojectsmustinvolvethecreationofnewstructuralstormwater <br />BMPsortheretrofitofexistingstructuralstormwaterBMPs,ortheuseofaproperly <br />designedregionalstructuralstormwaterBMP.Routinemaintenanceofstructural <br />stormwaterBMPsownedoroperatedby theCityofCenterville cannotbeusedto <br />meetthisrequirement. <br />3) Offsitetreatmentprojectsmustbecompletednolaterthan <br />24monthsafterthestartoftheoriginalconstructionactivity. <br />4) Theapplicantmayprovidepaymenttothe CityofCenterville inlieuofoff <br />sitetreatment. <br />Note:Itemsviii.14arediscretionaryanditisuptotheMS4iftheywouldliketoallowtheseoffsitetreatment <br />optionswithintheirjurisdictionsandincludethemintheirordinance.However, <br />iftheMS4doesnotadoptthese <br />items,theexpectationisthatthewaterqualityvolumewillbetreatedonsite. <br />March2024|wqstrm498 <br />Page 17 of 23 <br /> <br />