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� <br /> E <br /> � 'I'eclmical Revicw ConuniUcc Recummcndations:Thc TKC,bascd o�i ihc�vcighl of thc <br /> evidencc and using its bes(profcssional judgmcnt, finds thaC <br /> � • 1'retrcannent guidclines are necdcd ro assess facililies perfomiing al Icss-than-Basic <br /> treatment Ievcls, but adequatc Io servc as presetding facilities ahcad of infiluation ircatment. <br /> 7'he'1'RC recontmends guidclines be set at 50%removal o(50•micron pariicics acd 80% <br /> � removal of 125-micron pailicles.'I'he T2C further rcconmiends thcse guidelines bc applicd <br /> unifonnly to this and all fulure tcchnology submissions,dcvclopcd,and includcd in <br /> Lcology's stomnvatcr manuat. <br /> • 'I'hc Stonnceptor Syslcm0,sized according to"I�able I (above)should providc, at a <br /> ( minimum, equivalent perfonnanee to a presettling basin as defined in the most recent <br /> � .Smrm�vn�er hfarmgenien(�11m�iml jor I7�estern 14'ashing�orr, Vofume V, G;np(cr(. <br /> • Imbrium Systems Corporation shouW be�;iven the opportuniry to demonstratc,tluvugh <br /> I ?:iditional labontory and ficld �csting,whclher ihc Slmmccplor System�can atlain <br /> Lcology's 13asic (TSS)7'rcauncnt perfomiancc go:d. <br /> IFindings of Fact: <br /> • Imbrium Sysicros Corporation has .;ubmillcd labora�ory data for its Stmmceptor Sys�cm� <br /> � Sl'G900, tcsting silica matcrial prepared to satisfy Ncw Jcrscy Dcpartmcnt of Hnvironntcntal <br /> Protcction (N,TnF.P)standards (mean partidc sizc)7 microns; rangc I to 1000 microns). <br /> �1'cightcd'1'SS rcmoval ratcs avcragcd 75"/o across a range of operating ratcs(25"/o to 125% <br /> I of the design ra�c),with 'I'SS in(luenl conccntrations(97 micron mcan parlicle size) <br /> avci.�gin�;295 mg/L. Umvciglllcd'I'SS removal ralcs avcragcd 74%,and thc rcmo��al r�tc at <br /> 285 gpm was 73`%. <br /> • Scour Icsts werc nm at l25",�a o(the dcsign }lowratc witli initial sedimcnl loading of 50%and <br /> � 100"/n in the lowcr chambcr of thc unit. No scouring occuncd at SO%loading and minimaf <br /> scouring occuncd at 100"/� loading. <br /> • Scve�.�] substantiat lield d,na sets were suUmittcd. Flewevcr, mos� data do not reproscnt <br /> I flo�v-�vcighted compositc,atnplcs for indi��idual stornis,which are rcquircd by thc WADUB <br /> pmtocol. "fhe n1adison srte used flow-wcighted composites, and TSS removal rales were in <br /> thc 20%� l0 30%ranga Thc �9adison sitc is n mainicnancc yard with dirt and salt pilcs and <br /> � Imbrium Systcros bclicvcs�hc results do no� rcprescnt lypical systcm perforniancc. <br /> • The system is re�dily maintaincd using a vacuum truck. <br /> • 'fhcre a,c appro�imatcll' I S.00U $tonnccptor s��sicros in usc natiomvidc and 510 in thc <br /> Pacilic 1�`urlhwcst. <br /> Technology Ucscription: <br /> Design manual and technical bulletins can Uc dawnloaded from compan}%s �veb sile. <br /> Rceommended Rescarcl� and De��elopmeni: <br /> I�.cology cncotn'agcs ImUrium Syslcros Ca�ioration to pursuc continuous itnprovcments tu thc <br /> Stormccptur SystcmCG. "Co thal crd, thc Cnllowing actions arc rcconuncnded: <br /> J <br />