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Trace Analysis Laboratory, Inc. Telephone (415) 783-6960 <br /> 3423 Investment Boulevard. #8 • Hayward, California 94545 Facsimile (415) 783-1512 <br /> LOG NO. . 1032 <br /> DATE SAMPLED: 6/11/91 <br /> "' == [LATE RECEIVED: 6/17/91 <br />' DATE ANALYZED: 6/18/91 <br /> DATE REPORTED: 6/19/91 <br />' CUSTOMER: Versar, Inc. <br /> REQUESTER: James Jensen <br />' PROJECT: No. 6264-308, Ashley Lane/P.B. Stockton <br />' Sam le T e: Air <br /> #1 Method Blank <br />' Method and Concen- Reporting Concen- Reporting <br /> Constituent Units tration Limit tration Ljmit <br /> DHS Method: <br /> Total Petroleum Hydro- <br /> carbons as Gasoline mg/m3 29 2 ND 2 <br /> Modified EPA Method 8020: <br /> Benzene mg/m3 0.76 .03 NO .03 <br /> Toluene mg/m3 0. 15 .08 NO .08 <br /> Xylenes mg/m3 0. 17 . 1 NO . 1 <br /> Ethylbenzene mg/m3 0.08 .04 NO .04 <br /> C Summary: <br /> Recovery: 83 <br />' % RPD: 12 <br /> Concentrations reported as ND were not detected at or above the reporting limit. <br /> ouis W. Dupuis <br /> Quality Assurance/Quality Control Manager <br /> Founding Member of the Association of California Testing Laboratories <br />