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COLUMBIA ANALYTICAL SERVICES. INC. <br /> Analytical Report <br /> • Client EMCON Associates Date Received 02/24/93 <br /> Project EMCON Prosect No OG71-017 01 Service Request No : SJ93-0261 <br /> ARCO Facility No 434 Sample Matrix- Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LUFT Method <br /> Ng/L (ppb) <br /> Sample Name WW-1A W-213 (861 W-3 (68) <br /> Date Analyzed 03/05/93 03/05/93 03106/93 <br /> Analyte MRL <br /> Benzene 0 5 ND ND <1 • <br /> Toluene 05 ND ND ND <br /> Ethylbenzene 05 ND ND ND <br /> Total Xylenes 0 5 ND ND ND <br /> TPN as Gasoline 50 ND ND ND <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> Raised MRL due to matrix interference <br /> Approved by Date ►�'1 1a/ i3 <br /> 2 <br /> 1921 Ringwood Avenue • Son Jose California 95131 • Telephone 4081407-2400 • Fox 4081437 9356 <br />