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Submission #: 2002-11-0401 <br /> Fuel Oxygenates by 8260B <br /> ATC Associates Inc. STI-San Francisco <br /> Attn.: Jim Lehrman 1220 Quarry Lane <br /> 6602 Owens Drive Suite 100 Pleasanton,CA 94566 <br /> Pleasanton, CA 94588 Tel:(925)484-1919 <br /> Phone: (925) 460-5300 Fax: (925)463-2559 Fax:(925)484-1096 <br /> www.stl-inc.com <br /> Project: 75.62503.3203 Received: 11/19/200213:25 www.chromalab.com <br /> Quik Stop# 132 <br /> Site: 3555 West Hammer lane CA DHS ELAP*2496 <br /> Stockton <br /> : <br /> Batch QC:Report. -: <br /> 1 <br /> Preps) '503013 <br /> . ':.Tests) 8260FA8 <br /> Laboratory Cont . <br /> roi Spike- Water;• QC Batch#20021111122_01'27' <br /> 2002/11/22-01:.27-003 Extracted:.11/22/2002 Analvzed: 11/22/2002-10:26; <br /> LCSD 2002/11/22-01.27-004 Extracted: 11/22/2002 Anaiyzed: 11122IM0210:56 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD1 Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % I Rec. RPD LCS LCSD <br /> Benzene 27.3 28.5 25.0 109.2 114.0 4.3 69-129 20 <br /> Toluene 27.1 26.7 25.0 108.4 106.8 1.5 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 24.1 27.9 25.0 96.4 111.6 14.6 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 457 455 500 91.4 91.0 76-114 <br /> Tofuene-d8 504 507 500 100.8 101.4 88-110 <br /> 11/26/2002 16:58 STL San Francisco is part of Severn Trent Laboratories,Inc. Page 14 of 17 <br />