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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 07/14/92 <br /> Project EMCON Project No G71-18 01 Work Order# SJ92-0856 <br /> Arco Facility No 2093 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Ng/L (ppb) <br /> Sample Name AT -12 (241 Method Blank M2thod Blank <br /> Date Analyzed 07/17/92 07/17/92 07/20/92 <br /> Analyte MRL <br /> Benzene 05 ND ND ND <br /> Toluene 0 5 ND ND NO <br /> Ethylbenzene 05 ND ND ND <br /> Total Xylenes 05 NO ND NO <br /> TPH as Gasoline 50 ND ND NO <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> NO None Detected at or above the method reporting limit <br /> Approved by Date \//V 2 <br /> 5 <br /> 4971 R ^nwnnd Avant ra • Cnn fncc f'r Lfn.r.n OR 14 • T�1—1... •no .nom n.nn _ r e . + +e� <br />