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STL <br /> Submission #: 2004-03-0004 <br /> MENIMENE <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <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: 02/27/2004 18:53 <br /> Conoco Phillips# 11195 <br /> Site: 16500 South interstate 5, Lathrop <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004103110-28.66 <br /> LCS 2004103110-2B.66-040 Extracted: 03/10/2004 Analyzed: 03110/200418:40 <br /> LCSD 2004103110-28.66-004 Extracted. 03/10/2004 Analyzed: 03/10/200419:04 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 20.2 20.2 25 80.8 80.8 0.0 65-165 20 ?, <br /> Benzene 21.9 21.8 25 87.6 87.2 0.5 69-129 20 <br /> Toluene 21.6 21.7 25 86.4 86.8 0.5 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 511 509 500 102.2 101.8 76-114 <br /> Toluene-d8 488 513 500 97.6 102.6 1 1 88-110 <br /> Severn Trent Laboratories, Inc. 03111/2004 16.06 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A patl nr Severn Tent Pl- Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP#2496 Page 27 of 29 <br />