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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 10/13/92 <br /> Project EMCON Project No OG71-018 01 Work Order No SJ92-1268 <br /> ARCO Facility No 2093 Sample Matrix: Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/Califomia DHS LUFT Method <br /> NgA- (Ppb) <br /> Sample Name Method Blank <br /> Date Analyzed 10/16/92 <br /> Analyte MRL <br /> Benzene 05 NO <br /> Toluene 05 ND <br /> Ethylbenzene 05 ND <br /> Total Xylenes 05 ND <br /> TPH as Gasoline 50 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 DC z— <br /> r <br /> 6 <br /> 1921 Ringwood Avenue • Son Jose California 95131 9 Telephone 408/437 2400 • Fox 4081437 9356 <br />