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STL <br /> Submission: 2004-11-0241 <br /> r-_ <br /> `i Gas/BTEX/MTBE by 8260B <br /> SECOR-Sacramento <br /> Attn.: Amy Draffan <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone: (916) 861-0400 Fax: (916) 861-0430 <br /> Project: Conoco Philips Site#11195 Received: 11/05/2004 14:00 <br /> Site: 16500 Louise, Lathrop, CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260E <br /> Laboratory Control Spike Water QC Batch#2004111119-1B.62 <br /> LCS 2004/11/19-1B.62-007 Extracted: 11/19/2004 Analyzed: 11/19/2004 09:07 <br /> LCSD <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 24.5 25 98.0 65-165 20 <br /> ` Benzene 21.5 25 86.0 69-129 20 <br /> t> Toluene 25.6 25 102.4 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 453 500 90.6 72-128 <br /> Toluene-d8 468 500 93.6 80-113 <br /> Severn Trent Laboratories, Inc. 111211200417:34 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart of Sevem Trenl Plc Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP#2496 Page 6 of 10 <br />