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Submission 2005-07-0294 <br /> STL <br /> • Gas1BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geosaence- 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 07/12/2005 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N El Dorado St Stockton <br /> Batch QC Report y _ <br /> Prep(s):5030B Test(s) 8260B <br /> 7 <br /> Laboratory Control Spike Water QC Batch#2005107122-2A 64 <br /> LCs 2005107122-2A 64-039. Extracted 07/22/2005 Analyzed 07122/2005 20 39 { <br /> LCSD <br /> Compound Conc ugIL Exp Conc Recovery% RPDJ Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 23 2 25 928 65-165 20 <br /> Benzene 249 25 996 69-129 20 <br /> Toluene 278 25 1112 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 503 500 1006 73-130 <br /> Toluene-d8 1528 500 11056 81-114 <br /> • Severn Trent Laboratories, Inc 07/28/2005 17 27 <br /> STL San Francisco*1220 Quarry Lane Pleasanton CA 94566 <br /> Aper ed Se mTrent Pk Tel 925 484 1919 Fax 925 484 1096*www stl-inc com*CA DHS ELAN 2496 Page 27 of 41 <br />