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l <br /> Trace Analysis Laboratory, Inc. Telephone (510) 783-6960 <br /> 3423 Investment Boulevard, #8 a Hayward Caitforn,a 54545 Facsimile (510) 783-1512 <br /> LOG NUMBER 5411 <br /> _— -�-- DATE SAMPLED 04/10/95 <br /> DATE RECEIVED 04/11/95 <br /> DATE ANALYZED. 04/14/95 <br /> DATE REPORTED: 04/19/95 <br /> CUSTOMER Conoco, Inc. <br /> REQUESTER. John Bower of SECOR <br /> PROJECT: No. N0700-001-01, Conoco/Stockton <br /> Sample Type: Vapor, _,...._.._... <br /> EFF - INF <br /> Method and Concen- Reporting Concen- Reporting <br /> Constituent* Units tration Limit tration Limit <br /> Modified DHS Method: <br /> Total Petroleum Hydro- <br /> carbons as Gasoline mg/m3 NO 30 67 30 <br /> Modified EPA Method 8020 for: <br /> Benzene mg/m3 NO 0.10 0.36 0.10 <br /> Toluene mg/m3 NO 0. 10 4.4 0. 10 <br /> Ethylbenzene mg/m3 NO 0.10 2.3 0.10 <br /> Xylenes mg/m3 NO 0 30 14 0 30 <br /> Concentrations reported as NO were not detected at or above the reporting limit. <br /> Founding Member of the Association of California Testing Laboratories <br />