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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 04/23/92 <br /> Project EMCON Project No G71-18 01 Work Order # SJ92-0489 <br /> Arco Facility No 2093 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> ug/L (ppb) <br /> Sample Name ATR-5 (26) ATR-6 (26) ATR-8.124) <br /> Date Analyzed 04/27/92 04/27/92 04/27/92 <br /> Analyte MRL <br /> Benzene 05 1 6 ND 14 <br /> Toluene 05 ND ND 09 <br /> Ethylbenzene 0 5 20 ND 14 <br /> Total Xylenes 0 5 ND ND 9 3 <br /> TPH as Gasoline 50 290 ND 140 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Lima <br /> ND None Detected at or above the method reporting limit <br /> Approved by L 'liZti Date <br /> 3 <br /> 4 071 Q.wwnoei flvanUe • �on Jose Caltfc- c 95131 • Te'eohone 408/437 ,2400 • Fox 4081437 9356 <br />