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Submission: 2005-01-0289 <br /> S T L <br /> Gas1BTEX 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: 01/11/2005 17:17 <br /> Conoco Phillips#01205 <br /> Site: 16470 Cambridge St. Lathrop <br /> Batch QC Re ort <br /> Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch #2005101!18-2A.65 <br /> LCS 2005101118-2A.65-050 Extracted: 01/18/2005 Analyzed: 01/181200519:50 <br /> LCSD <br /> Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> Compound Conc. ug/L <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 23.5 25 94.0 65-165 20 <br /> Benzene 22.6 25 90.4 69-129 20 <br /> Toluene 23.1 25 92.4 70-130 20 <br /> Surrog a tes(s) <br /> 1,2-Dichloroethane-d4 401 500 80.2 73-130 <br /> Toluene-d8 486 500 97.2 81-114 <br /> • Severn Trent Laboratories, Inc. 01/24/2005 12:59 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part 01 Severn Trent Pic Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com'CA DHS FLAP#2496 Page 22 of 27 <br />