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COLUMBIA ANALYTICAL SERVICES. INC. - - <br /> Analytical Reports , <br /> Client: EMCON Associates Date Received- 04/23/92 '= - <br /> . Project- EMCON Project No G71-2901 Work Order # SJ92-0490 <br /> Arco Facility No 2130 Sample Matnx: Water <br /> i <br /> BTEX and TPH as Gasoline <br /> EPA Methods 5030/8020/DHS LUFT Method <br /> Ng/L (ppb) <br /> Sample Name Method.-Blank_ Method Blank Method Blank <br /> Date Analyzed 04/27/92 04/29/92 _ 05/01/92 <br /> Analyte MRL <br /> Benzene 0 5 ND NO NO <br /> Toluene 05 ND NO NO <br /> Ethylbenzene 0 5 ND NO ND <br /> Total Xylenes 0 5 ND NO NO <br /> TPH as Gasoline 50 ND NO ND <br /> TPH Total Petroleum Hydrocarbons <br /> MRL Method Reporting Limit <br /> ND None Detected at or above the method reporting limit <br /> • <br /> Approved by Date Pez V <br /> 3 <br />