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� . . <br /> ( <br /> � .,�.,��,o, ,,.,, <br /> , ,, .,,., ,, �, <br /> ECOLOGY <br /> Apri1200C <br /> I (Updated Decembcr 200O <br /> CONDITiONAI,USE LGVEL DESIGNATION FOR PItE7'REA7'111EN7' (TSS) <br /> � For <br /> Stormcepto: Systcm� <br /> IEcoloaV's Decisiun: <br /> � Based on Imbrium Systems Corporatiou's application submissions and recommendaQons <br /> by the Technical Review Cmnmittce(TRC), Ecology hereby issues the folloNing Use I,evel <br /> Designation (or the Imbrlum Systems Corporation Stormceptor System�: <br /> � I. Conditional Usc Levcl Designation (CULD)fnr pretreatmenl,as def ned in thc F,cology <br /> Manual Volume 1,(a) ahead of infiltratfon trcatment,or(b)to protect and cxtcnd thc <br /> � maiutenunce cYcle of a Dasic or Enhanced Treatment device(c.g.,sand or media Olter). <br /> This CUI,D applics to Stormce�tor System�wilts sized in •rcwrJance with Tablc 1 <br /> (below) •rt the��•atcr qualfry design flo�vrate as detcrmincd �ising the Western <br /> R'ashingtmi Hydrology Mndcl (�V�YHA1): <br /> ITable 1 <br /> Trcalment Flo�vratc <br /> I Unit Sgpm) <br /> STC 450i �q3 <br /> � S7'C 900 285 <br /> STC 1200 Zgs <br /> STC 1800 Zgg <br /> i S't_C 2400 476 <br /> STC 3(00 47G <br /> STC 4800 793 <br /> iS'PC G000 793 <br /> s�rc�zoo >>to <br /> sTc — <br /> � >>000 �sss <br /> STC <br /> 13000 1585 <br /> STC <br /> � 1GOU0 2220 <br /> 2. '1'hc Cl1LD expires on April 3U,2009 unless extended br Ecology. <br /> � <br />