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ATLSubmission: 2004-08-0759 <br /> l <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TFCC 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: 08/27/2004 18:30 <br /> Conoco Phillips#11195 <br /> Site: 16500 South 1-5 Lathrop <br /> Batch QC Report <br /> Prep(s): 50306 Test(s): 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004109108-3A.66 <br /> I <br /> LCS 2004109108-3A.66-035 Extracted: 09108/2004 Analyzed: 091081200418:35 <br /> LCSD 2004109108-3A.66-043 Extracted: 09/08/2004 Analyzed: 09/08/200419:43 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS I LCSD <br /> Methyl tert-butyl ether(MTBE) 23.8 28.0 25 95.2 112.0 16.2 65-165 20 <br /> Benzene 29.1 29.5 25 116.4 118.0 1.4 69-129 20 <br /> Toluene 1 26.9 26.2 25 107.6 104.8 2.6 70-130 20 r <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 449 460 500 89.8 92.0 72-128 <br /> Toluene-d8 524 512 500 104,8 102.4 80-113 <br /> I� <br /> I <br /> I <br /> Severn Trent Laboratories, Inc. 09/10/2004 16:56 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pad d Severn Trent Pic Tel 926 484 1919 Fax 925 484 1096"www.stl-inc.com'CA DHS ELAP*2496 Page 25 of 28 <br />