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J <br /> 26485 THORNTON ROAD <br /> February 25, 1994 <br /> Page 2 <br /> polyethylene screen inside a stainless steel slip casing will be lowered through the <br /> hollow-stem augers. The tip of the sampler will be pushed three to four feet below <br /> the ground water surface; the stainless steel casing will subsequently be lifted three <br /> to four feet, leaving the polyethylene screen to be flied with ground water. A <br /> stainless bailer will be used to purge four to five volumes of water from the screened <br /> interval. A ground water sample will be then obtained with a clean bailer and <br /> decanted into appropriate containers and preserved on ice <br /> • place soil cuttings generated during drilling in sealed, labeled 55-gailoh drums <br /> • submit up to 10 selected soil samples under chain-of-custody documentation to•a <br /> California-certified laboratory for analysis of Total Petroleum Hydrocarbons (TPH) <br /> as gasoline using Modified EPA method 8015 and Benzene, Toluene, Ethylbenzene, <br /> and Xylenes (BTEX) using EPA method 8020 <br /> l <br /> • obtain one water sample from each boring <br /> • submit each water sample; along with an appropriate travel blank, under chain-of- <br /> custody_documentation to a California-certified laboratory for analysis of TPH as <br /> f <br /> gasoline and BTEX <br /> • observe one day of soil excavation and stockpiling of petroleum hydrocarbon <br /> contaminated soil at the site <br /> • obtain up to 10 soil samples from the bottom and sidewalls of the excavation <br /> following removal of petroleum hydrocarbon contaminated material <br /> • submit up to 10 selected excavation soil samples under chain-of-custody <br /> T' <br /> documentation to a California-certified laboratory for analysis of Total Petroleum ? <br /> Hydrocarbons (TPH) as gasoline using Modified EPA method 8015 and Benzene, <br /> Toluene, Ethylbenzene, and Xylenes (BTEX) using EPA method 8020 <br /> WALLACE !<U1iL <br /> Er ASSOCIATES INC. <br />