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Submission#: 2001-12-0290 <br /> Gas/BTEX by 8015M/8021 } <br /> Batch QC report <br /> STL Chromalab <br /> Test Method: 8021 B Prep Method: 5030 1220 Quarry Lane 1. <br /> Pleasanton,CA 94566 <br /> Laboratory Control.Spike(LCSILCSD) Water QC Batch#2001112126.01.01 Tel 925 484 1919 <br /> Analyzed: Fax 825 484 1096 <br /> LCS: 2001112126-01.01-004 Extracted: 121261200108:31 y 121261200108:31 www.stl-lnc.com <br /> LCSD: 2001/12/26-01.01-005 Extracted: 12/26/200109:00 Analyzed: 12/26/2001 0$:00 www.chromalab,com <br /> CA DNS ELAP#1094 ; <br /> Compound Conc.(ug/L] Exp.Conc.juglL] Recovery[%] RPD CtriUmits[96] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [9b] Recovery RPD LCS LCSD <br /> Benzene 105 107 100.0 100.0 105.0 107.0 1.9 77-123 20 <br /> Toluene 110 110 100.0 100.0 110.0 110,0 0.0 78-122 20 <br /> Ethyl benzene 104 104 100.0 100.0 104.0 104.0 0.0 70-130 20 <br /> xylens(s) 326 318 300 300 108.7 106.0 2.5 75-125 20 <br /> Surrogate{s} i <br /> Trifluorotoluene 528 535 500 500 105.6 107.0 68-124 <br /> 1 <br /> i <br /> f � <br /> STL Chromalab Is a part of Severn Trent Laboratories,Inc. Page 4 of 5 <br />