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STLSubmission: 2005-07-0597 <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: 07/21/2005 14:20 <br /> Conoco Phillips #01205 <br /> Site: 16470 Cambridge Dr. Lathrop <br /> Batch QC Report <br /> Prep(s) 50 013 Test(s)'J8260B <br /> Laboratory Control Spike Waters0.; <br /> QC Batch #2005/08/01-1 B 65 <br /> LCS 2005108101-1 B 65-034 Extra ~ <br /> cted .08/01/2005 'Analyzed: 08/01/2005 09:34 <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) 16.7 25 66.8 65-165 20 <br /> Benzene 20.1 25 80.4 69-129 20 <br /> Toluene 19.9 25 79.6 70-130 20 <br /> Surroga tes(s) <br /> 1,2-Dichloroethane-d4 423 500 84.6 73-130 <br /> Toluene-d8 474 500 94.8 81-114 <br /> Severn Trent Laboratories, Inc. 08/03/2005 14:42 <br /> STL San Francisco, 1220 Quarry Lane,Pleasanton, CA 94565 <br /> Apart-f 54-m hent Pic Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS FLAP#2496 � Page 26 of 33 <br />