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o :• < • < . t . aNY1artN ENrAI . 6 . TEwIA s <br /> Poscat No. S9183-06-01 2001MAY 15 PM 3: 11 <br /> y It, 2gt2 M ASI ., AL <br /> Slow of <br /> Cain Ip_A LITif e!I tR iN{µf <br /> Department l Services, Real Berate Services Division <br /> Underground <br /> Tan Tank k Ume <br /> 707 3' Stem, Suite 4430 <br /> WS <br /> Wcel Secmmcntq California 95603 <br /> Subject: FORMER VIIffACH CAR WASH <br /> NI BAST MINER SIRE f <br /> STOCKTON, CALWORwA <br /> CONTRACT NO. 3105742, C'ONTRACC RBGIST RATION NO. 17WO107156736 <br /> FROCBC`f NO. 106196A <br /> CLARIFICATION LBCfBR—SOIL VAEOR SUR VEYAAD RLI'R ASSESSMENT <br /> flvo P br <br /> Dear Mr. Cain: <br /> In acemdau n: with Califomia DeparMent of Gmaol Services (OCM Connote No. 3105742, Contract <br /> Regustradoun Number I760010]I56]36, Project Number 106196A and per a directive from the (amoral <br /> Valley Re®mmd Winner Quality Conked Board (CVRWQCB), we are submitting Ws letter clarifying <br /> the Sol Voyor Survey and Risktissessnwn Workplon (Warkplan) dalcd Apoil23, 2007, for the Forrmx <br /> Vintage Car Wash facility Instead 9MI Bast Miner Street (the Site) in ducking, California. <br /> In respomsc f the Wofkplan, the CVRWQCB issued a later dated May 1, 2007, requestingimitifcatim <br /> for eight of the proposed sail vapor sample locations, specification of which bmmgs will be used for <br /> collection of physical properties and clafifrmion of how the data will be used for the risk asacssmenc <br /> A copy ofibe May 1, 2007, RWQCR emu is a rachd. The ronumod clarifications follow. <br /> The eight proposed soil vapor sample locators in question were selected to provide background soil <br /> vapor cmdiliom beneath the Site and for evaluating the potential for enamachment of vapors onto tin: <br /> Site form adjacent offietc sources. We haw ammdd the number of locations to two borings to <br /> feprescat background concentrations. The amended soil vapor sample locations we presuded on <br /> Figure L We have additionally depicted the pfopcaed locations for the two soil borings to be used do <br /> physical properties costing. The physical pmpertica data will be used as input pentameters in the JoMson <br /> and BW nSer vupor mlrvsinn model. <br /> aiw Rat stdsy lla.c sin. aa9 . m,d,esa,d,.o, ulaono an4s . clspno2 p1b1 esrz411s . fa. ISlsl e5zxlsrz <br />