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COLUMBIA ANALYTICAL SERVICES. INC <br /> Anaiytical Report <br /> Chent- EMCON Associates Date Received 07/10/92 <br /> Project EMCON Project No G71-29 01 Work Order # SJ92-0835 <br /> Arco Facility No 2130 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/DHS LUFT Method <br /> jug/L (ppb) <br /> I <br /> Sample Name MW-_t(73) MW-2 (72) MW- 7 <br /> Date Analyzed 07/15192 07/16192 07/16192 <br /> 1 <br /> Analyte MRL <br /> Benzene 0 5 1,900 140 1 5 <br /> Toluene 0 5 320 3 6 NO <br /> . Ethylbenzene 0 5 89 27 ND <br /> 1 Total Xylenes 0 5 230 45 1 2 <br /> TPH as Gasoline 50 6,500 2,100 55 <br /> 1 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> 1 <br /> 1 <br /> i <br /> Approved by A&&&49 Date �v[ <br /> 2 <br />