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STLSubmission: 2004-12-0056 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <br /> Attn.: Anju Farfan <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 /> Laboratory Control Spike Water QC Batch#2004/12108-1B..64 <br /> LCS 200411.2108-113.64-051 Extracted: 12/08/2004 Analyzed: 12/08/2004 07:28 <br /> LCSD <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl-Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 25-7 25 102.8 65-165 20 <br /> Benzene 24.9 25 99.6 69-129 20 <br /> Toluene 25.6 25 102.4 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 450 500 90-0 73-130 <br /> Toluene-d8 1459 1 1500 91.8 1 81-114 <br /> Severn Trent Laboratories, Inc. 12114/200413:37 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn hank Ple Tel 925 484 1919 Fax 926 484 1096'www.stl-inc.com`CA DNS ELAP#2496 Page 35 of 50 <br />