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S� <br /> Submission #: 2001-11-0604 <br /> I GasBTEXFuel Oxygenates by 8260B <br /> i <br /> Batch QC report <br /> STL Chromalab <br /> Test Method: 8260FAB Prep Method: 50308 1220 Quarry Lane <br /> Pleasanton,CA 94566 <br /> f Laboratory Control Spike(LCS/LCSD) Water QC Batch#2001112105-01.27 Tel 925 484 1919 <br /> Fax 925 484 1096 <br /> LCS: 2001112105-01.27-003 Extracted: 121051200111:02 Analyzed: 12/05/200111.02 www.sU-inc.com <br /> LCSD: 2001112/05-01.27-004 Extracted: 121051200111:30 Analyzed: 12/051200111:30 www.cnromalab.com <br /> CA DHS EiAP#1094 <br /> ( Compound Conc.(ug/Ll Exp.Conc.[ug1L] Recovery[%] RPD Ctrl.Limits{%] Flags <br /> LCS LCSD LCS LCSD LCS LCSD [%] Recovery RPO LCS LCSD <br /> Benzene 21.7 21.4 25.0 25.0 86.8 85.6 1.4 69-129 20 <br /> Toluene 22.6 22.0 25.0 25.0 90.4 88.0 2.7 70-130 20 <br /> Methyl tert-butyl ether 23.8 24.0 25.0 25.0 95.2 96.0 0.8 65-165 20 <br /> Surrogate(s) <br /> 1 <br /> 1,2-Dichloroethane-d4 559 564 500 500 111.8 112.8 76-114 <br /> Toluene-d8 504 493 500 500 100.8 98.6 88-110 <br /> i <br /> k� <br /> 1� <br /> STL Chromalab is a part of Severn Trent Laboratories,Inc. Page 14 of 16 <br />