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Submission #: 2002-03-0583 INUTWI M2 <br /> Gas/BTEX Compounds (High Level) <br /> Batch QC report <br /> STL San Francisco <br /> Test Method: 8015M Prep Method: 5030 1220 Quarry Lane <br /> 8021 B Pleasanton,CA 94566 <br /> k: Laboratory Control Spike(LCS/LCSD) Soil QC Batch#2002/04104-05.03 Tel 925484 1919 <br /> Fax 925 484 1096 <br /> LCS: 2002/04104-05.03-002 Extracted: 04/04/2002 11:23 Analyzed: 04/041200211:23 www.sil-inc,com <br /> www.chromalab.com <br /> F . LCSD: 2002104104-05.03-003 Extracted: 04/04/2002 11:53 Analyzed: 04/04/2002 11:53 <br /> I 1 CA DHS ELAP#1094 <br /> Compound Conc.[mglKg] Exp.Conc.[mg/Kg] Recovery RPD CtrLI-Imits[%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recover RPD LCS LCSD <br /> Gasoline 0.665 0.678 0,625 0.625 106.4 108.5 2.0 75 725 35 <br /> Benzene 0.124 0.127 0.125 0.125 99.2 101.6 2.4 77-123 35 <br /> Toluene 0.123 0.127 0.125 0.125 98.4 101.6 3.2 78-122 35 <br /> Ethyl benzene 0.123 0.127 0.125 0.125 98.4 101.6 3.2 70-130 35 <br /> Xylene(s) 0.378 0.386 0.375 0.375 100.8 102.9 2.1 75-125 35 <br /> Surrogate(s) <br /> Trifluorotoluene 98.2 99.5 100 100 98.2 99.5 53-125 0 <br /> 4-Bromofluorobenzene 82.8 84.2 100 100 82.8 84.2 58-124 0 <br /> '=1 <br /> j; <br /> STL San Francisca is a part of Severn Trent Laboratories,Inc. Page 5 of 6 <br />