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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analytical Report <br /> r Client EMCON Associates Date Received 12/18192 <br /> Project EMCON Project No OG71-038 01 Service Request No SJ92-1604 <br /> ARCO Facility No 2168 Sample Matrix Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/California DHS LOFT Method <br /> r Ng/�{pl'ip1 <br /> f <br /> Sample Name MW-1 {541 MW-2 (531 MW-3 153) <br /> Date Analyzed 12124/92 12124/92 12/24/92 <br /> Analyte MRL <br /> Benzene 05 3,500 2,500 12,000 <br /> Toluene 05 410 1,500 5,500 <br /> Ethylbenzene 05 400 190 2,100 <br /> Total Xylenes 0 5 800 880 7,200 <br /> TPH as Gasoline 50 14,000 13,000 67,000 <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Lima <br /> i <br /> Approved by Date: <br />