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COLUMBIA ANALYTICAL SERVICES, INC ` <br /> Analytical Report <br /> Client EMCON Associates Date Received 11/19/92 <br /> Project EMCON Project No OG71-017 01 Work Order No SJ92-1466 <br /> ARCO Facility No 434 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> u9/L (ppb) <br /> Sample Name W-12 (771 W-26 (86) Method Blank <br /> Date Analyzed 11125/92 11/25/92 11125/92 <br /> Analyte MRL <br /> Benzene 0 5 11 ND ND <br /> Toluene 0 5 ND ND ND <br /> Ethylbenzene 0 5 ND ND ND <br /> Total Xylenes 0 5 ND ND ND <br /> TPH as Gasoline 50 ND ND ND <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> • <br /> Approved by ( 1�—�cc..., _ Date <br /> 5 <br />