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I <br /> ®� STL Submission: 2005-02-0580 <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: Conoco Philips Site# 1205 Received: 02/17/2005 13:30 <br /> Site: 16470 Cambridge Drive, Lathrop, CA <br /> 1 <br /> Batch QC Report <br />' Prep(s): 50306 Test(s):82606 <br /> Matrix Spike ( MS I MSD ) Water QC Batch#2005102123-2C.64 <br /> MSIMSD Lab ID: 2005-02-0478-001 <br /> MS: 2005102!23-2C.64-037 Extracted:02/23/2005 Analyzed: 021231200519:14 <br />' Dilution: 1.00 <br /> MSD: 2005!02!23-2C.64-036 Extracted:02/23/2005 Analyzed: 02/23/200519:36 <br /> Dilution: 1.00 <br /> Compound Conc. u L k.Leve Recove % Limits% Fla s <br /> MS MSD Sample u L MS MSD I RPD Rec. RPD MS MSD <br />' Benzene 26.4 26.8 3.42 25 91.9 93.5 1.7 69-129 20 <br /> Toluene 24.9 25.6 ND 25 99.6 102.4 2.8 70-130 20 <br /> Methyl tert-butyl ether 29.6 31.2 7.48 25 88.5 94.9 7.0 65-165 20 <br />' Surrogate(s) <br /> 1,2-Dichloroethane-d4 480 505 500 96.0 101.0 73-130 <br /> Toluene-d8 509 538 500 101.8 107.6 81-114 <br /> 1 <br /> • Severn Trent Laboratories, Inc. 03/02/2005 15:11 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 Page 6 of 6 <br /> A pert of swam hem Pic Tel 925 484 1919 Fax 925 484 1096*www.sti-inc.com*CA DHS FLAP#2496 <br />