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STLSubmission: 200408-0315 <br /> 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: 08/11/2004 15:20 <br /> Site: 16500 S. Harland Rd., Lathrop <br /> Batch QC.Ra ort <br /> Prep(s): 50308 Test s): 8260E <br /> Laboratory.Control Spike Water QC Batch:#2004108121 wl B.69 <br /> LCS 2004108121-1B.68-040 Extracted:.0812112004 Analyzed:08/21/200408:40 <br /> LCSD 2004108121-10.68-041 Extracted: 08/21/2004. Analyzed: 0812112004x08:59 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Llmits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> s Methyl tert-butyl ether(MTBE) 25.6 25.3 25 102.4 101.2 1.2 65-165 20 <br /> Benzene 21.7 22.9 25 86.8 91.6 5.4 69-129 20 <br /> Toluene 29.5 27.5 25 118.0 110.0 7.0 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 444 447 500 88.8 89.4 72-128 <br /> Toluene-d8 533 501 500 106.6 100.2 80-113 <br /> Severn Trent Laboratories, Inc. 061231200416:33 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part or Smm Trwl Pic Tel 925 464 1919 Fax 925 484 1096'www.stl-inc.wm'CA DHS ELAP#2496 Page 6 of 8 <br />