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I&VALIA 0111111 Submission: 2005-03-0709 <br /> S T L <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#2005/03/25-2A.69 <br /> B-3t_15' >> MS Lab ID: 2005-03-0709-005 <br /> MS: 2005/03/25-2A.69-053 Extracted:03/25/2005 Analyzed: 03/25/200511:53 <br /> Dilution: 1.00 <br /> MSD: 2005/03/25-2A.69-012 Extracted:03/25/2005 Analyzed: 03/25/200512:12 <br /> Dilution: 1.00 <br /> Compound Cone. m Kg S k.Leve Recove % Limits% Flags <br /> MS MSD Sample ma/Ka ma/KMS MSD RPD Rec. RPD MS MSD <br /> Methyl tert-butyl ether 0.0404 0.0424 ND 0.05 80.8 84.8 4.8 65-165 20 <br /> Benzene 0.0439 0.0469 ND 0.05 87.8 93.8 6.6 69-129 20 <br /> Toluene 0.0422 0.0511 ND 0.05 84.4 102.2 19.1 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 467 465 500 93.4 93.0 72-124 <br /> Toluene-d8 456 496 500 91.2 99.2 75-116 <br /> Severn Trent Laboratories, Inc. 03/28/200517:17 <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn T-1 Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com'CA DHS ELAP#2496 Page 16 of 17 <br />