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S T L Submission: 2004-11-0241 <br /> Gas/BTEXIMTBE 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):8260B <br /> Matrix Spike( MS 1 MSD) Water QC Batch #2004111119-1B.65 <br /> MS/MSD Lab ID: 2004-11-0443-001 <br /> MS: 200411 111 9-1 8.65-007 Extracted: 11/19/2004 Analyzed: 11/1912004 21:07 <br /> Dilution: 1.00 <br /> MSD: 2004111119-1B.65-031 Extracted: 11/19/2004 Analyzed: 11/19/2004 21:31 <br /> Dilution: 1.00 <br /> F ` <br /> Conc. ug/L S k.Leve Recove % Limits% Flags <br /> Compound <br /> MS MSD Sample ug/L MS MSD I RPD Rec. RPD MS MSD <br /> Benzene 14.9 11.4 ND 25 59.6 45.6 26.6 69-129 20 M5 M5 <br /> Toluene 21.4 21.3 ND 25 85.6 85.2 0.5 70-130 20 <br /> Methyl Cert-butyl ether 24.6 24.4 0.893 25 94.8 94.0 0.8 65-165 20 <br /> surrogate(s) <br /> 1,2-Dichloroethane-d4 487 291 500 97.4 58.2 72-128 S6 <br /> Toluene-d8 542 504 504 108.4 100.9 1 80-113 <br /> Severn Trent Laboratories, Inc. 11/21/2004 17:34 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Sevem Tmnl Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com W CA DHS ELAP#2496 Page 9 of 10 <br />