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Locking watertight caps and protective vault boxes were installed on the wells The attached <br /> boring logs show well construction details <br /> Well Development <br /> The new installed monitoring well was developed by surging the screened interval with a <br /> surge block and purging ten casing volumes of water from the well Well development water <br /> was temporarily stored on-site in appropriately labeled drums <br /> Laboratory Analysis <br /> Selected soil and groundwater samples were analyzed in the laboratory for the presence of <br /> total purgeable petroleum hydrocarbons calculated as gasoline (TPPH-g), total extractable <br /> petroleum hydrocarbons calculated as diesel (TEPH-d), and benzene, toluene, ethylbenzene, <br /> and xylenes (BTEX compounds), and total lead Extraction was performed by the purge and <br /> trap technique (EPA Method 5030) Analysis for TPPH-g was performed according to <br /> modified EPA Methods 5030 and 8015 analysis for BTEX compounds was by EPA <br /> Methods 5030 and 8020 Final detection was by gas chromatography using aflame-ionization <br /> detector and a PID All analyses were performed by a California State-certified laboratory <br /> The groundwater sample from Well U-4 halogenated organic compounds by EPA <br /> Method 8010 <br /> 3100971B1REPORT DOC A - 2 February 14, 1997 <br />