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1, f <br /> SL TT Submission#: 2004-03-0004 <br /> 1 <br /> Gas/BTEX Fuel Oxygenates by 82608 <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): 5030E Test(s): 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004103109-IB.66 <br /> LCS 2004103109-1 B.66-003 Extracted: 03/09/2004 Analyzed: 03/09/2004 10:03 <br /> LCSD 2004103109-113.66-028 Extracted: 03/09/2004 Analyzed: 031091200410:28 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctri,Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 25.9 26.1 25 103.6 104.4 0.8 65-165 20 <br /> Benzene 27.5 27.5 25 110.0 110.0 0.0 69-129 20 <br /> Toluene 28.2 25.7 25 912.8 102.8 93 70-930 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 522 510 500 104.4 102.0 76-114 <br /> Toluene-d8 525 508 500 105.0 101.6 88-110 <br /> } <br /> Severn Trent Laboratories, Inc. 03/111200416:06 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part or Seem Trent Plc Tel 925484 1919 Fax 925484 1096"www.stl-inc.com'CA DHS ELAP#2496 Page 26 of 29 <br />