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l hc comhincd data I�om Nic hvo ficW sitcti rcpurted in Hiis 'II:GR (I Icritagc Markctplacc <br /> :mJ I,akc Sicvcns) indicatc that Ihc per�ixm�ncc ol'a Storml'illcr s�:slcm configurcd liir <br /> inlinc bypass ��ilh '1_PG mcdia and a h}draulic IoaJing ralc ol'I gpm/Il'of mcdia;urlacc <br /> arca mccls licalogy perlixtnancc goals li�r 13asic "I'rcahncnl. <br /> 'Pechnirnl ►tcvicw Commillec Rccnmmrndntian�: <br /> I Ill` I RC. I7JSl`(I Otl �Ill` 1Pl`16III O��I1C l`Vidcncc anJ using ils hcst prolcssional judgm�i�t. <br /> tindti Ihal: <br /> � tilorml'ihcr. using%P(i �ncJia and opcnting at no morc than a hydr�ulic loading ralc <br /> uf I g�m/li' ol�mcdia surlacc arca. is expcctcd to providc cf7ccti�c stonmvatcr <br /> trraimcnt achic�in6 I:colag�-'s Basic"I'rcatmcnt "I'SS renu,�al perfbrmancc goals. as <br /> JrmunstratcJ h� ficlJ anJ laburaton tcsting perli�rmcd in accord:mcc ��nh thc <br /> prulncul: �nd. Stnrnil'ihcr" is dccmrJ satisl:iclorp wilh respecl to f;iclors othcr than <br /> trcalmcnl perfixmancc (c.g.. maintcnancc: �cc thc prulocol's Ap�enJi� II lix <br /> a,mplcic list). <br /> Findin�;s nf fac1: <br /> • hiflucnt 7'titi conccn�ratiuns:ind p;irticic sizcdislributions ��crc gcncrall� nilhin Ihc <br /> rangc of��ha� «uulJ hc considcrcJ "t�pical" fiir��cstcrn ��'ashington (sill to sih <br /> lo:mi). <br /> • I'hiit�-hcu(?'-) stornt cvcnis �ccrc tiamplcJ al hvo sitcs li�r storms 1}om April :OOi to <br /> �1;rcch 201W. ollchich hccrq-hco�,2)�rcrc dccmcd "yualilicd"vtJ wcre thcrelbrc <br /> inrluJcd in ihc J;ua ;m;il�r,is sct. <br /> • tiUUislical anal�sis oflhcsc ?? slorm c�cnts �crilics Ihc Ja1a scl's aJcyuac�. <br /> • Annl�cing all 2� yuali�i ing c�cius. Ihc a�cra�c inllucnt anJ clllucnt conccnir:uions <br /> an�l ;iggrcgalc pullutanl IoaJ rcJuclion arc I Id mp/I.. 25 mg/I., and R?%. <br /> rrs�icclivcl�. <br /> • Anal��ing all 22 yu;ililj ing cvcnts baxJ on thc rs�i�nu�rJureiv,��r Ilot� ra�c durin� <br /> Ihr crcnl ��crsus ihc airu.rrn�rd pruk Ilu�c raic). anJ nturc hcavih �vcightuig �hosc <br /> r�rnts nrar Ihc dcsign ralc(vcrsus cvcn�s ci�hcr far abuvc or ��cll bclo�c thc dcsign <br /> r:nrl Jurs no� sipni�ic;mlic oll'cc� �hc rcpurtcJ rctiulls. <br /> • f„r ihc 7 yu,ilil}ing c�cnis ��ith inllurnl 'I:titi conccniratiuns grcatcr than 100 mg/I.. <br /> ihr accragc inllucm and ctilucnt conccntratiuns and aggrcgatr pollutan� Io�iJ <br /> rcdurtinn arc 2d I m�%I.. 3d m�/I.. anJ R9"6. respccliecl�. If the 2 af 7 cecnts that <br /> csrrrJ Ihr nw�imum 3UII mg/L spccilicJ in licol�,��'s guiJclincs are c.�cluJcd. ihc <br /> ;i�cragc inllucnt :mJ rlllurnt conrcntralinns anJ aggrcga�c piillul.uu Io;�J rcductiun <br /> ;ire I SR mg/I.. i$ pl�%I.. ;mJ 7R"i�. rcsprctivcl)�. <br /> • I ur thc I S yu,ililj ing c�cnls ��ith inllucnt 'I:tiS conccntratiuns Icss than 100 tng/I.. �hc <br /> ;ncragc inilucnt anJ clllucnl cunrcntratinns anJ nggrcgatc pollu�ant IoaJ rcJuclion <br /> arc $5 ii���I.. ?p m�.'I.. anJ 61"��. rcspccliccl��. If Ihc G of I S cvcnts thal fall bclo�c thc <br /> mininunn i1 mg-1. I'titi spccilicJ in fculug�'s guiJclinrs are cscluJcd, thc avcragc <br /> inlluc,ii ;mJ clllucnt r�,nrcntrations anJ aggrcgalc pullutant IoaJ rcdac�ion arc 7R <br /> mg l . ?6 mg 7.. :ind 67"��, resperiiccl�. <br /> 5 , <br /> 1I�I I ;%% <br />