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STLSubmission 2004-06-0677 <br /> • <br /> GasIBTEX 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 06/17/2004 16 31 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave Stockton <br /> Batch QC Re ort` Prep(s) 5030E r - Test(s) 8260FAB <br /> Laboratory Control Spike Water _ QC Batch #2004106129-2A 64 <br /> r <br /> LCS 2004106129-2A 64-051 Extracted 06/29/2004 Analyzed 06/29/2004 18 51 ` <br /> LCSD 2004106129-2A 64-000 m-Extracted 0612912004 _ Analyzed 06/29/2004 2000_ <br /> Compound Conc ug1L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> - . Methyl tert-butyl ether(MTBE) 21 6 233 25 864 932 76 65-165 20 <br /> Benzene 21 0 225 25 84 0 900 6 9 69-129 20 <br /> Toluene 25 0 247 25 1000 988 1 2 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 463 429 500 926 858 72-128 <br /> Toluene-d8 515 476 500 11030 1952 1 1 80-113 <br /> Severn Trent Laboratories, Inc 06/30/2004 12 55 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94566 <br /> A part of sev.m T.0 Pk Tel 925 484 1919 Fax 925 484 1096"www stl-inc cam'CA DWS FLAP#2496 Page 20 of 22 <br />