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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 /> STEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Ng/L (Ppb) <br /> Sample Name ATR-9 (24) ATR-10 {241 ATR-11 (231 <br /> Date Analyzed 04/27/92 04/27/92 04/27/92 <br /> Analyte MRL <br /> Benzene 0 5 ND 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 Lima <br /> ND None Detected at or above the method reporting limit <br /> Approved by A��14'ffllw4v Date 1%V <br /> l l <br /> 4 <br /> 1921 Rinowood Avenue 0 Son Jose Coliforrno 95131 • Telephone 4081437 2400 0 Fox 4081437 9356 <br />