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t ------------ <br /> OWL I STL <br /> Submission: 2005-05-0014 <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: 04/29/2005 15:22 <br /> Site: 16500 S. Harland, Rd., Lathrop <br /> Batch QC Report <br /> Prep(s): 5030E Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch#2005105110-1A.66 <br /> LCS 2005105110-1A.66-054 Extracted: 05/10/2005 Analyzed: 05/101200519:54 <br /> LCSD <br /> Compound Cone. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl Cert-butyl ether(MTBE) 23.1 25 92.4 65-165 20 <br /> Benzene 22.2 25 88.8 69-129 20 <br /> Toluene 23.2 25 92.8 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 425 500 85.0 73-130 <br /> Toluene-d8 1497 500 99.4 1 1 81-114 <br /> Severn Trent Laboratories, Inc. 05/14/2005 11:57 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Sevem Trent Pie Tel 925 484 1919 Fax 925 484 1 096*www.stl-inc.com*CA DHS ELAP#2496 Page 5 of 7 <br />