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} <br /> .. Submission#: 2004-04-0045 <br /> STL <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: 1751 SEC550/551 Received: 04/01/2004 15:40 <br /> Conoco Philips Site#11195 <br /> Site: 16500 Louise, Lathrop, CA <br /> Batch QC Report _ <br /> Prep(s): 5030B Test(s): 82606 <br /> Laboratory Control Spike Water QC Batch#2004/04!08-2A.64 <br /> LCS 2004104108-2A.64-046 Extracted: 04/08/2004 Analyzed: 04108120041.7:46 <br /> LCSD 2004104108-2A.64-008 Extracted: 04/08/2004 Analyzed: 04708/200418:08 <br /> Compound Cone. uglL Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS I LCSD <br /> Methyl tort-butyl ether(MTBE) 22.3 20.4 25 89.2 81.6 8.9 65-165 20 <br /> '= Benzene 23.0 21.5 25 92.0 86.0 6.7 69-129 20 <br /> / Toluene 23.1 21.7 25 92.4 85.8 6.3 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 457 459 500 91.4 91.8 76-114 <br /> Toluene-d8 447 1481 1500 89.4 96.2 1 88-110 <br /> - J <br /> Severn Trent Laboratories, Inc. 0411 212004 17:14 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A ped of Severn Trani Pic Tel 925 484 1919 Fax 925 484 1096*www,stl-ino.com*CA DHS FLAP#2496 Page 7 of 8 <br />