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6) Store soil samples on ice and transport to a state-certified laboratory for analysis. Soil <br /> samples will be analyzed for TPH as gasoline and volatile aromatics (BTE&X), in <br /> accordance with EPA methods 8015 and 8020, respectively. <br /> 7) Log auger returns in accordance with the Unified Soil Classification System. Monitor <br /> auger returns and soil sample duplicates for the presence of volatile organics using <br /> a photo-ionization detector (PID) pre-calibrated to isobutylene. <br /> 8) Decontaminate sampling equipment in an alconox solution and rinse twice with water <br /> prior to each sampling run. <br /> 9) Steam-clean auger flights after drilling. <br /> 10) Add soil cuttings to existing stockpile and store on-site pending analytical results. <br /> 11) Complete each boring as a two-inch diameter monitoring well. The wells will be <br /> completed in accordance with the well design depicted in Figure 3. <br /> 12) Survey the top of each well casing to determine the elevation relative to existing <br /> wells. <br /> 13) No sooner than 48 hours after installation, measure to the nearest 0.01 foot, the <br /> static water level in the new wells. Remove standing water from each well. A bailer <br /> or submersible pump will be used to surge and purge each well. A minimum of three <br /> well volummes of water will be removed from each well to stabilize pH, temperature <br /> and conductivity. Parameters will be measured at one-gallon intervals. After wells <br /> have stabilized, samples will be collected using disposable plastic bailers. <br /> 14) Store purge water in 55 gallon DOT drums on-site pending analytical results. <br /> 15) Label and log water samples on a chain-of-custody form. <br /> 16) Store the water samples on ice and transport to a state-certified laboratory for <br /> _ analysis. Water samples will be analyzed for TPH as gasoline and volatile aromatics <br /> (BTE&X), in accordance with EPA methods 8015 and 8020, respectively. <br /> 17) Prepare a report detailing the procedures and results of the investigation. Upon <br /> approval of the Client, the report will be submitted to the PHS/EHD and the Central <br /> Valley Regional Water Quality Control Board (CVRWQCB). <br /> 3 <br />