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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 05/28/93 <br /> Project EMCON Project No OG71-017 01 Service Request No SJ93-0719 <br /> ARCO Facility No 434 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFf Method <br /> Vg/L (ppb) <br /> Sample Name W-1A 177) W-213-(86) VII-3 (68) <br /> Date Analyzed 06/01/93 06/01/93 06/01193 <br /> Analyte MRL <br /> . Benzene 0 5 NO ND NO <br /> Toluene 0 5 NO NO ND <br /> Ethylbenzene 0 5 NO ND ND <br /> Total Xylenes 0 5 NO NO ND <br /> TPH as Gasoline 50 NO NO 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 Date <br /> 2 <br /> 1921 Ringwood Avenue 9 Son lose Colifornio 95131 • Telephone 408/407 2400 • Fox 4081437 9356 <br />