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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 02/24/93 <br /> Project EMCON Project No OG71-017 01 Service Request No SJ93-0261 <br /> ARCO Facility No 434 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> lig/L (ppb) <br /> Sample Name W-5 (69) W-6 1691 W-7 1691 <br /> Date Analyzed 03/05/93 03/05/93 03/05/93 • <br /> Analyte MRL <br /> Benzene 05 ND ND ND <br /> Toluene 0 5 ND ND ND <br /> Ethylbenzene 05 NO ND ND <br /> Total Xylenes 05 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 /> • This sample was part of the analytical batch started on March 5, 1993 However, it was <br /> analyzed after midnight so the actual date analyzed is March 6, 1993 <br /> Approved by Date Aid, <v 3 <br /> 3 <br /> 1921 Ringwood Avenue • San Jose California 95131 0 Telephone 4081437-2400 + Fox 4081437 9356 <br />