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COLUMBIA ANALYTICAL SERVICES, INC <br /> Analyticai Report <br /> Client: EMCON Associates Date Received: 03/12/93 <br /> Project: EMCON Project No OG71-038 01 Service Request No.. SJ93-0368 <br /> ARCO Facility No 2168 Sample Matnx. Water <br /> BTEX and TPH as Gasoline <br /> EPA Methods 503018020/California DHS LUFT Method <br /> ug/L (ppb) <br /> Sample Name MW-1 (541 MW-2 (53) MW-3 (53) <br /> Date Analyzed 03/19/93 03/19/93 03/19/93 <br /> AAnplyt! MRL <br /> Benzene 0 5 6,500 3,300 16,000 <br /> Toluene 0 5 340 1,500 1,300 <br /> Ethylbenzene 0 5 580 210 1,800 <br /> Total Xylenes 0 5 1,700 1,000 4,900 <br /> TPH as Gasoline 50 28,000 16,000 51,000 <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 />