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, 1 t <br /> STLSubmission: 2004-12-0056 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> TRC Alton Geoscience- Irvine <br /> Attn.: Anju Fartan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone: (949)341-7440 Fax: (949)753-0111 <br /> Project: 41050001 FA20 Received: 11/30/2004 16:07 <br /> Conoco Phillips#11195 <br /> Site: 16500 S. Interstate 5 <br /> Batch QC Report <br /> Prep(s): 5030B Test(s):8260FAB <br /> Matrix Spike(MS 1 MSD) Water QC Batch#.2004112107-2S.64 <br /> MS/MSD LabID: 2004-12-0054-006 <br /> MS: 2004112107-2S.64-038 Extracted: 12/07/2004 Analyzed: 12/07/2004 20:38 <br /> Dilution: 1.00 <br /> MSD: 2004112107-25.64-001 Extracted: 12/07/2004 Analyzed: 12/07/2004 21:01 <br /> r. <br /> Dilution: 1.00 <br /> Compound Conc. ug/L Spk.Level Recovery% Limits% Flags <br /> MS MSD Sample ug/L MS MSD RPD Rec. RPD MS MSD <br /> Benzene 29.4 29.4 ND 25 116.0 117.6 1.4 69-129 20 <br /> Toluene 28.8 28.6 ND 25 115.2 114.8 0.3 70-130 20 <br /> Methyl tort-butyl ether 30.8 30.0 ND 25 123.2 120.0 2.6 65-165 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 476 473 500 95.2 94.6 73-130 <br /> Toluene-d8 454 456 500 90.8 91.2 81-114 <br /> Severn Trent Laboratories, Inc. 12/14/2004 13:37 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 <br /> Ap.,tJSevern T..1N. Tel 925 484 1919 Fax 925 484 1096'www.sti-inc.com'CA DHS ELAP#2496 Page 44 of 50 <br />