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Trace Analysis Laboratory, Inc. r. Telephone,(510) 783-696o <br /> 3423 Investment Boulevard #8 • Hayward, California 94545 Facsimile (510) 7$3-1512 ' <br /> ' LOG NUMBER: 4188 Aq--- —� - ,DATE SAMPLED 03/07/94 <br /> -_ — — DATE RECEIVED 03/08/94 <br /> DATE ANALYZED 03/11/94 <br /> DATE REPORTED:, 03/22/94 ' <br /> CUSTOMER: Conoco, Inc. <br /> REQUESTER Lenard Long of Sunri,ver Engineering and Construction, » Inc. <br /> PROJECT No 930,36, '4325 East Washington ,,,Street, Stockton ' <br /> Samn1e Type. Vapor <br /> I-1- Method Blank <br /> Method and Concen- Reporting Concen- Reporting <br /> Constituent Units trationlLit tration Limit ' <br /> Modified DHS =Method <br /> Total Petroleum Hydro- <br /> carbons as Gasoline mg/m3 3,200 210 ND 10 <br /> Modified EPA Method 8020 for ' <br /> Benzene mg,/m3 NO 18 j ND, 0 20 <br /> Toluene mg/m3 27 18 ND 0 10 <br /> Eth yl benzene _ m m3 <br /> 9 c91`-_ - 18 -- ND F _;_0__10 <br /> _ _ _ _ _ _ _ <br /> Xylenes J mg/m3 850 54 _ND <br /> 0 30 <br /> - QC' SUi11mdYYT�^ =''-= �T - - - - <br /> % Recovery 117 ' <br /> % RPD _ 32 <br /> Concentrations reported as NO were not detected at or above the reportinq limit <br /> * The Recovery for vapor samples is based on the Laboratory ,Control -Sample r 1 <br /> " <br /> Louis W DuPuis <br /> 1 Quality Assurance/Quality Control Manager ' <br /> I <br />