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ST L Submission: 2005-05-0809 <br /> Gas/BTEX Fuel Oxygenates by 82608 <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: 05/31/2005 16:13 <br /> Conoco Phillips# 11195 <br /> Site: 16500 South Interstate 5, Lathrop <br /> - Batch-QC Report <br /> Prep(s): 50306 Test(s): 82606 <br /> Laboratory Control Spike Water QC Batch#2005106108-1.B.64 <br /> LCS 2005146108-16.64-060 Extracted: 06/08/2005 Analyzed .061081200513.23 <br /> LCSD <br /> Compound Conc. uglL Exp.Conc. Recovery% JRPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tent-butyl ether(MTBE) 27.4 25 109.6 65-165 20 <br /> Benzene 24.9 25 99.6 69-129 20 <br /> Toluene 27.1 25 108.4 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroe than e-d4 498 500 99.6 73-130 <br /> Toluene-dS 519 500 103.8 81-114 <br /> Severn Trent Laboratories, Inc. 061141200516:16 <br /> STL San Francisco-1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pal ciS—MTwt Plc Tel 925 4841919 Fax 925 484 1096'www.stl-inc.com"CA DHS ELAP#2496 Page 26 of 33 <br />