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r b <br /> 4 <br /> i' <br /> REGAL 603 8/16/91 <br /> the excavation wells so samples could be obtained from that <br /> source area. Steady state was probably not reached in the <br /> excavationfrom the short 1/2 area; but sample uanalyses oindicates n ofparssimilagr <br /> pulled um 1;FH and 14% methane. All hag (tedlar) <br /> vapor stream of 32,800 p, HydrocarbonsaFuel (TF`H) as <br /> samples were analyzed for ToToolll uene, Ethylbenzene and Xylenes <br /> gasoline along with Benzene, <br /> hod(BTEX) , using DHS headspace met Also atMethanecanalysisr� wasrun <br /> Western Geo-Engineers (WEGE). q aloe with the FID <br /> using a dedicated infrared analyAnr'influent sample to the <br /> chromatograph, for confirmation. <br /> charcoal was obtained prior to shutting the system off and <br /> disconnecting it from the wells (for usinganalyEs by Chd 8015 <br /> Laboratories) . This sample was analyzed using EPA modified 8the <br /> and 602 for TPH and ETEX, respectively, and used to profile tthe <br /> he <br /> charcoal drums for shspmwerefoobtainedr regenerfrom n.the Thground utwater <br /> test, vacuum reading <br /> monitoring wells, to help establish the radius of influence of the <br /> vapor extraction system, see Figure 6B. <br /> 4.0 AQUIFER 'TEST (WGRK PLAN) <br /> 4.1 PUMP TEST PROJE-TIONS <br /> of the one or <br /> After the <br /> comple n tion <br /> month <br /> a decision will bemadeeasltotthe necession Of ity <br /> recdvery/ <br /> test a <br /> to start ground water treatment. Prior to t e pum <br /> treatabildityheeR�moxluatincineraion torhfor�destruction,onVault" as anwill be air made. <br /> tank an um in will be <br /> During the initial ' week of vapor exroximately 7,000 gallons of <br /> conducted on monitor well MW3. App <br /> ground water will be produced from monitor well MW3. This water <br /> will be passed through the "ConVault" stripper for treatment and <br /> then disposed of to the sewer. As required bthe Stockton <br /> e <br /> Municipal District for sewer discharge, 3 lower explosion" limit <br /> (LEL) with warning at 20% and auto shut down at 40% Petroleum <br /> asthat s the treated ground <br /> be present from <br /> Hydrocarbon Vapor will be innstalled at the influent to the sewer, <br /> to monitor the g influent and effluent water samples <br /> water (none are expected} . a DHS certified laboratory, <br /> will be obtained for analysis by ecified <br /> l one week test for water treatment <br /> during the initia , as sp <br /> the POTW. Once the results are received and reviewed by the <br /> City of Stockton Munici <br /> by pal Utilities Department, they will notify <br /> eated water that maybe placed to the sewer <br /> us to tSt amount of tr <br /> and ground water treatment will proceed. <br /> PAGE 9 <br />