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STLSubmission 2004.094644 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience-Irvine <br /> Attn An1u Farfan <br /> 21 Technology Drive <br /> Irvine,CA 92718 <br /> Phone (949) 341-7440 Fax (949)753-0111 <br /> Project 41050001 FA20 Received 09/21/2004 16 35 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Avenue, Stockton <br /> Batch 06 ke ort <br /> Prep(s) 50306 Tbst(s)�8260I=AI9 <br /> Laboratory Control$pike Water QC$etch A 2004/10/01-48,66 <br /> LCS 2004!110101-48,86-030 Extracted 16/01%2004 Analyzed 10/0112004 19 30 <br /> LCSD 2004/10/014866-p53 Extracted-1010T/2004 An2Cyzedr'11010112004 10-53 <br /> Compound Cont ug/L Exp Cont Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec I RPD LCS I LCSD <br /> Methyl tart-butyl ether(MTBE) 246 264 25 984 1016 32 65-165 20 ) <br /> Benzene 245 24 9 25 980 996 16 69-129 20 <br /> Toluene 223 232 25 892 928 4 0 70-130 20 s <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 451 434 500 902 868 72-128 <br /> Toluene-d8 1481 1466 500 J 96 2 1932 1 80-113 <br /> i <br /> I <br /> I <br /> i <br /> Severn Trent Laboratories, Inc 10/0412004 19 19 <br /> STL San Francisco•1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pan ditwMT,.W Pla Tel 925 4841919 Fax 925 4841096'www stldnc com'CA DHS ELAP#2496 Page 14 of 15 <br />