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COLUMBIA ANALYTICAL SERVICES. INC <br /> Analytical Report <br /> Client EMCON Associates Date Received 02/24/93 <br /> Project EMCON Project 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 503018020/California DHS LUFT Method <br /> ug/L (ppb) <br /> Sample Name W-12 [771 Method Blank Method Blank <br /> Date Analyzed 03105/93 * 03/05/93 03/06193 <br /> Analyte MRL <br /> Benzene 05 ND ND ND <br /> Toluene 0 5 ND ND ND <br /> Ethyibenzene 0 5 ND ND ND <br /> Total Xylenes 0 5 ND ND ND <br /> TPH 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 /> " <br /> This sample was part of the analytical batch started on March 5, 1993 However, It was <br /> analyzed after midnight so the actual date analyzed is March 6, 1993 <br /> Approved by- Date hw(� l '1,�-3 - <br /> 5 <br /> 1921 Ringwood Avenue • Son lose California 95131 9 Telephone 4081437 2400 • Fox 4081437 9356 <br />