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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 04/24/92 <br /> Project EMCON Project No G71-19 01 Work Order # SJ92-0494 <br /> Arco Facility No 2133 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> N9/L (ppb) <br /> Sample Name PR-1 (27) PR-2 1271 BHD-1 (271 <br /> Date Analyzed 04/29/92 04/29192 04/29/92 <br /> Analvie MRL <br /> Benzene 0 5 ND ND 130 <br /> Toluene 0 5 ND ND 6 7 <br /> Ethylbenzene 0 5 ND ND 200 <br /> Total Xylenes 0 5 ND ND 120 <br /> • TPH as Gasoline 50 ND ND 3,000 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Approved by <br /> Date Ay <br /> 5 <br /> ..c n. T-I-..L_-_ Al o1 n f+f) • C .r1q 1AX 1 01514 <br />