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STLSubmission 2004-07-0397 <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 /> Received 07113!2004 16 34 <br /> Project 41050001FA20 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado St Stockton <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FA6 <br /> Laboratory Control Spike Water QC Batch#2004/07126-1D 64 <br /> LCS 2004107126-10 64-015 Extracted 07/26/2004 Analyzed 07/26/2004 07 15 <br /> LCSD 2004/07126-ID 64-037 Extracted 07/26/2004 Analyzed 07/26/2004 07 37 <br /> Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> Compound LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 217 224 25 868 896 32 65-165 20 • <br /> Benzene 204 20 3 25 816 81 2 0 5 69-129 20 <br /> Toluene 230 23 7 25 920 948 3 0 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 507 512 500 1014 1024 72-128 <br /> Toluene-dB 521 530 500 1042 1060 80-113 <br /> 07/27/2004 12 340 <br /> Severn Trent Laboratories, Inc <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 Page 23 of 24 <br /> A part of Seven Tent Plc Tel 925 484 1919 Fax 925 4841096 a www stl-mc com a CA DHS ELAP#2496 <br />