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STLSubmission: 2005-03-0709 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> SECOR-Sacramento <br /> Attn.: Clint Harms <br /> 3017 Kilgore Road, Suite 100 <br /> Rancho Cordova, CA 95670 <br /> Phone: (916)861-0400 Fax: (916)861-0430 <br /> Project: 77CP.67425.00.0002 Received: 03/22/2005 18:00 <br /> Conoco Philips Site#2787245 <br /> Site: 1206 East March Lane, Stockton, CA <br /> Batch QC Report <br /> Prep(s): 5030B Test(s):8260B <br /> Matrix Spike ( MS/MSD ) Soil QC Batch#2005/03/26-2A.62 <br /> MS/MSD Lab ID: 2005-03-0547-029 <br /> MS: 2005/03/26-2A.62-049 Extracted: 03/26/2005 Analyzed: 03/26/200519:49 <br /> Dilution: 1.00 <br /> MSD: 2005/03/26-2A.62-015 Extracted:03/26/2005 Analyzed: 03/26/2005 20:15 <br /> Dilution: 1.00 <br /> Compound Conc. m Kg S k.Leve Recove % Limits% Fla s <br /> MS MSD Sample mg/Kg mg/KgMS I MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 0.0524 0.0475 ND 0.05 104.8 95.0 9.8 65-165 20 <br /> Benzene 0.0479 0.0533 ND 0.05 95.8 106.6 10.7 69-129 20 <br /> Toluene 0.0525 0.0588 ND 0.05 105.0 117.6 11.3 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 512 506 500 102.4 101.2 72-124 <br /> Toluene-d8 538 551 500 107.6 110.2 75-116 <br /> Severn Trent Laboratories, Inc. 03/28/200517:17 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A p rl of$a—Tran)Pk Tel 925 484 1919 Fax 925 484 1096'www.sti-inc.com'CA DHS ELAP#2496 Page 17 of 17 <br />