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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 04/16/93 <br /> Project EMCON Project No OG71-018 01 Service Request No SJ93-0521 <br /> ARCO Facility No 2093 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> jig/L Ippb? <br /> Sample Name ATR-8 (241 ATR-9 f 24) ATR-10 (24) <br /> Date Analyzed 04/26/93 04/23/93 04123/93 <br /> Analyte MRL <br /> Benzene 05 42 ND ND <br /> Toluene 0 5 ND ND ND <br /> Ethylbenzene 05 46 ND ND <br /> Total Xylenes 05 4 9 ND ND <br /> TPH as Gasoline 50 - 110 ND NO <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Approved by l Date Z7 <br /> 11�X-3114 <br /> 1921 Ringwood Avenue • Son lose Collfornio 95131 • Telephone 408/437-2400 • Fox 4081437-9386 <br />