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si I <br /> d <br /> Upon completion of sampling;rtthe drive train will be used to backfill the hole with <br /> bentonite chips while the drive train is retracted;from the hole. All equipment will be <br /> decontaminated prior to use at the site and between each sampling location. <br /> Decontamination wilt consist of spraying the 'equipment with hot water (steam cleaning). <br /> ILI <br /> Water generated during decontamination will be contained within labeled 55-gallon <br /> drums. <br /> San Joaquin County files will be examined to assess, the presence of water-supply <br /> and other wells within 2,000 feet of the site. <br /> E A level survey will be conducted to establish an accurate top-of-casing reference <br /> elevation for MW-4. The elevation of MW-4'will be tied into wells MW-1 and MW-2. <br /> The results of this investigation will be presented.in-a summary report showing the <br /> distribution of aromatics and TPH in the vadose zone of the site. <br /> } <br /> 1 " <br /> 4 i <br /> �1 `s <br /> f <br /> R4182OA-625960-6 <br /> C soilvaplpin 6 <br /> .3 <br /> s <br />