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STL <br /> Submission #: 2004-03-0004 <br /> } <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): 50306 Test(s): 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004103108-01.69 <br /> LCS 2004103108-01.69-022 Extracted: 03/08/2004 Analyzed: 03/08/200416:22 <br /> LCSD 2004/03108-01.69-041 Extracted: 03/08/2004 Analyzed: 03/08/200416:41 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 18.8 19.5 25.0 75.2 78.0 3.7 69-129 20 <br /> Toluene 24.4 24.5 25.0 97.6 98.0 0.4 70-130 20 l'? , <br /> Methyl tert-butyl ether(MTBE) 25.0 25.6 25.0 100.0 102.4 2.4 65-165 20 <br /> Surrogates(s) <br /> Toluene-d8 531 489 500 106.2 97.8 88-110 <br /> 1,2-Dichloroethane-d4 504 505 500 100.8 101.0 76-114 <br /> i <br /> Severn Trent Laboratories, Inc. 03/11/2004 16:06 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apart ol5evern Trenl Plc Tel 926 484 1919 Fax 925 484-1096-www.sti-inc.com*CA DHS ELAP#2496 Page 25 of 29 <br />