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---------------- <br /> STL Submission: 2005-10-0515 <br /> Gas/BTEX 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: 410500011FA20 Received: 10/25/2005 16:05 <br /> Conoco Phillips#11195 <br /> Site: 16500 S. Interstate 5, Lathrop, CA <br /> Batch QC Report <br /> Prep(s)-. 50308 Tests) 82608 <br /> i <br /> Laboratory Control Spike Water QC Batch#2005110!26 213.71:. <br /> LCS 2005110126-28,71-099 Extracted: 10/2612005' Analyzed: 10/26/2005 18:57 <br /> LCSD <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LC SD LCS LCSD % Rec. RPD LCS LCSD i <br /> Methyl tert-butyl ether(MTBE) 24.5 25 98.0 65-165 20 <br /> Benzene 26.7 25 106.8 69-129 20 <br /> t= a Toluene 25.7 25 102-8 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 484 500 96.8 73-130 <br /> Toluene-d8 535 500 107.0 81-114 <br /> EtE <br /> k: <br /> h <br /> i� <br /> 1= <br /> F <br /> r <br /> Severn Trent Laboratories, Inc. 10!311200515:29 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 <br /> Apad of Sevem Trent Plc Tel 925484 1919 Fax 925 484 1096www.stl-ine.com"CA DNS ELAP#2496 Page 29 of 37 'y <br /> i <br /> r <br /> 00 <br /> d <br />