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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 01/23/92 <br /> Project EMCON Project No G71-19 01 Work Order# SJ92-0086 <br /> Arco Facility No 2133 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Ng/L (ppb) <br /> Sample Name E-7 J191 E-8 (231 E-1 22 <br /> Date Analyzed 01/28/92 01/28/92 01/29/92 <br /> Analy,te MRL <br /> Benzene 0 5 2 8 2 8 3,200 <br /> Toluene 0 5 2 3 2 1 3,600 <br /> Ethyibenzene 0 5 1 2 06 800 <br /> Total Xylenes 0 5 2 3 ND 3,600 <br /> I <br /> TPH as Gasoline 50 860 250 32,000 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> 1,(6 Date_ w� td/ 1 2L / -- <br /> Approved by � -- <br /> 4 <br /> -192 11 Ringwood Avenue • Son Jose California 95131 • Telephone 4081407 2400 Fox 4081437 9356 <br />