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ST L 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): 50308 Test(s):8260E <br /> Matrix Spike( MS 1 MSD ) Water QC Batch #2 0 0 510 511 0-1A.66 <br /> MW-3 » MS Lab ID: 2005-05-0014-001 <br /> MS: 2005105110-1A.66-055 Extracted:05/10/2005 Analyzed: 05/10/2005 23:50 <br /> Dilution: 1.00 <br /> MSD: 2005/05110-1A.66-056 Extracted:05/12/2005 Analyzed: 05/12/2005 00:16 <br /> Dilution: 1.00 <br /> Conc. ug IL Spk.Level Recovery% Limits% Flags <br /> - Compound <br /> MS MSD Sample u /L MS MSD RPD Rec. RPD MS MSD <br /> Methyl tort-butyl ether 36.3 39.0 14.2 25 88.4 99.2 11.5 65-165 20 <br /> Benzene 22.4 25.6 ND 25 89.6 102.4 13.3 69-129 20 <br /> Toluene 23.3 26.0 ND 25 93.2 104.0 11.0 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 431 431 500 86.2 86.2 73-130 <br /> Toluene-d8 481 475 500 96.2 95.0 1 81-114 <br /> I <br /> I <br /> I <br /> I <br /> Severn Trent Laboratories, Inc. 05114/2005 11:57 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A par[of Severn Tmnl Plc Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP#2496 Page 6 of 7 <br /> k`{ <br /> I <br />