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MEN ME <br /> '1'raa:c AnulyHifi Labiwafory,lnc. Telephone(415)763-6960 <br /> Facsimile(415)783-15123423 Investment Boulovard,NB • Hayward,California 94545 _ <br /> _ —— LOG NO. : 9972 <br /> DATE SAMPLED: 6/05/91 <br /> DATE RECEIVED: 6/07/91 <br /> DATE ANALYZED: 5/18/91 <br /> DATE REPORTED: 6/21/91 <br /> CUSTOMER: Conoco, Inc. <br /> REQUESTER: Joe DeBiaso <br /> PROJECT: No. 900511-M, SLocktan <br /> Sample Type: Air <br /> 1_) Method Blank <br /> Method and Concen- Reporting Concen- Reporting <br /> Const_�ituent Units tral:ion Lintit� tration Limit _ <br /> DHS Method: <br /> Total Petroleum Hydro- <br /> carbons as Gasoline mg/m3 8,300 50 ND 50 <br /> Modified EPA Method 8020: <br /> 3 62 3 NO U.03 <br /> Benzene mg/m <br /> nsg/rn3 120 4 NO <br /> 0.08 <br /> Toluene <br /> Xylenes my/ni3 540 10 NQ 0.1 <br /> Ethylbenzene mg/m3 60 4 ND 0.04 <br /> Concentrations reported as NO were not detected at or above the reporting limit. <br /> Liis—wmuis <br /> Quality Assurance Quality Control Manager <br /> boratorias <br /> Founding Member of(I Association of California Tosting La <br />