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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> Client: EMCON Associates Date Received: 04/30/93 <br /> Project EMCON Protect No OG71-019 01 Service Request No.: SJ93-0591 <br /> ARCO Facility No 2133 Sample Matrix Water <br /> STEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LLlFr Method - <br /> jig/L (ppbl <br /> Sample Name E-7-11 8) E8123} E-9 1181 <br /> Date Analyzed 05/12/93 05/13/93 05/12/93 <br /> Analyte MRL <br /> Benzene 0 5 <3 4 ° 20 270. <br /> Toluene 0 5 <3 1 ° <4 2 " <98. ° <br /> Ethylbenzene 0 5 <2 0 ° 2 2 150. <br /> Total Xylenes 0 5 <0 9 ° 1 7 380. <br /> TPH as Gasoline 50 450 360 12,000 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ° Raised MRL due to matrix interference <br /> Approved by Date. /lydy <br /> 5 <br /> 1921 Ringwood Avenue • Son Jose California 95131 9 Telephone 4081437 2400 • Fax 408!437 9356 <br />