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= Trace Analysis Laboratory,Inc <br /> LOG NUMBER: 4953 <br /> DATE SAMPLED: 11/17/94 <br /> DATE RECEIVED: 11/18/94 <br /> DATE ANALYZED: 11/21/94 <br /> DATE REPORTED: 11/28/94 <br /> PAGE: Two <br /> Sample Type: Vapor <br /> Method Blank <br /> Method and Concen- Reporting <br /> Constituent: Units tration Limit <br /> Modified DHS Method: <br /> Total Petroleum Hydro- <br /> carbons as Gasoline mg/m3 ND 10 <br /> Modified EPA Method 8020 for: <br /> Benzene mg/m3 ND 0.10 <br /> Toluene mg/m3 ND 0.10 _ <br /> Ethyl benzene mg/m3 ND 0.10 ` <br /> Xylenes mg/m3 ND 0.30 . <br /> C Summa <br /> % Recovery: 94* <br /> % RPD: 20 <br /> Concentrations reported as ND were not detected at or above the reporting limit. <br /> * The Recovery for vapor samples is based on the Laboratory Control Sample. <br /> Louis W. DuPuis <br /> Quality Assurance/Quality Control Manager <br /> 0 <br />