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1 <br />' STL <br /> Submiss ion: 2005-03-0545 <br /> • Gas/BTEX Fuel Oxygenates 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.61205.07.0005 Received: 03/15/2005 16:15 <br /> Conoco Philips Site#1205 <br />' Site: 16470 Cambridge Street, Lathrop, CA <br />' Batch QC Report <br /> Prep(s): 5030B Test(s):8260E <br />' Matrix Spike ( MS 1 MSD ) Water QC Batch#2005103124-2A.64 <br /> MS/MSD Lab ID: 2005-03-0521 -001 <br />' MS: 2005103124-2A.64-023 Extracted:03!2412005 Analyzed: 03/24/2005 21:23 <br /> Dilution: 1,00 <br /> MSD: 2005103124-2A.64-045 Extracted:03/24/2005 Analyzed: 03/24/2005 21:45 <br /> lie Dilution: 1.00 <br /> Compound Conc. ug!L S pk.Leve Recove % Limits% Fla s <br />' MS MSD Sample u IL MS MSD RPD Rec. RPD MS MSD <br /> Methyl tart-butyl ether 32.8 32.1 ND 25 131.2 128.4 2.2 65-165 20 <br /> Benzene 29.4 28.7 ND 25 117.6 114.8 2.4 69-129 20 <br /> I Toluene 31.7 30.4 ND 25 126.8 121.6 4.2 70-130 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 514 496 500 102.8 99.2 73-130 <br /> Toluene-d8 451 466 1 500 90.1 93.2 81-114 <br /> I <br /> I <br /> I <br /> Severn Trent Laboratories, Inc. 03!28!200510:06 <br /> I STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pad DiSavem7-1 Plc Tel 925 484 1919 Fax 925 484 1096.www.stl-inc.com`CA DHS ELAP#2496 Page 8 of 9 <br />