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" STL Submission#. 2004-01-0011 <br /> y <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <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 1213112003 16 05 <br /> Conoco Phillips#6981 <br /> Site 4707 Pacific Ave Stockton <br /> Batch QC Re art <br /> Prep(s), 6030B Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2004101108-2B.66 <br /> LCS 2004101108-213 66-054 Extracted, 01108/2004 Analyzed 01108/2004 17 29 <br /> LCSD 200410110828 66053 Extracted 01/0812004 Analyzed 01108/2004 17:53 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 246 248 25 984 992 08 65-165 20 <br /> Benzene 236 241 25 944 964 21 69-129 20 <br /> Toluene 250 25 2 25 1000 1008 0 8 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 453 446 500 906 892 76-114 <br /> Toluene-d8 442 447 500 884 894 88-110 <br /> Severn Trent Laboratories, Inc 01/12/2004 18 20 <br /> STL San Francisco-1220 Quarry Lane, Pleasanton,CA 94566 <br /> A Pert r*Sa 7rem Plc Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn•CA DHS FLAP#2496 Page 24 of 29 <br />