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MOEN= S T L <br /> • GaslBTEX Fuel Oxygenates by 8260B Submission 2005-07-0294 <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 07/12/2005 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N EI Dorado St Stockton <br /> Batch QC Report <br /> t <br /> Prep(s) 50348 Test(s) 8260E 4 <br /> Laboratory Control Spike _ Water QC Batch#2005107123-2,k66'-', <br /> LCS 2005107123-2A 66-056 r 'Extracted 07/2312005 _ Analyzed 0712312005 16' 56 <br /> LCSD - <br /> _ _ J <br /> Compound Conc ug1L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tent-butyl ether(MTBE) 27 9 25 1116 65-165 20 <br /> Benzene 200 25 800 69-129 20 <br /> Toluene 277 25 1108 70-130 20 <br /> Surrogates(s) <br /> 1 2-Dichloroethane-d4 492 500 98 4 73-130 <br /> TolueneA8 1493 500 986 81_114 <br /> • Severn Trent Laboratories, Inc 07/28/2005 17 27 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> Apart I Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096`www stl-inc com'CA DHS ELAP#2496 Page 30 of 41 <br />