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1 <br /> S T L Submission 2004-10-0974 <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 77CP 60004 01 5886 Received 10/29/2004 14 50 <br /> Conoco Philips Site#5886 <br /> Site 3701 W March Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 8260B <br /> Matrix Spike ( MS 1 MSD ) Water QC Batch #2004111104-1B 65 <br /> MW-1 >> MS Lab iD 2004-10-0974-001 <br /> MS 2004111104-1 B 65-035 Extracted 11/04/2004 Analyzed 11/04/2004 10 35 <br /> Dilution 1 00 <br /> MSD 2004111104-1 B 65-058 Extracted 11/04/2004 Analyzed 11/04/2004 10 58 <br /> Dilution 1 00 <br /> Compound Conc u /L S k Level Recove % Limits% Fla s <br /> M5 MSD Sample w /L MS MSD RPD Rec RPD MS MSD <br /> Methyl tart-butyl ether 203 227 ND 25 812 908 112 65-165 20 <br /> Benzene 223 230 ND 25 892 92 0 3 1 69-129 20 <br /> Toluene 232 235 ND 25 928 94 0 1 3 70-130 20 <br /> Surroga fe(s) <br /> 1 2-Dichloroethane-d4 372 384 500 744 76 8 72-128 <br /> Toluene-d8 447 460 500 89 4 92 0 80-113 <br /> Severn Trent Laboratories, Inc 11/11/2004 15 31 <br /> STL San Francisco'1220 Quarry Lane, Pleasanton CA 94566 <br /> A pan of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn'CA DHS ELAP#2496 Page 7 of 7 <br />