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ST L Submission # 2003-07-0$08 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 <br /> Phone (925) 551-7444 Fax (925) 551-7899 <br /> Project 180183 80 Received 07/28/2003 11 00 <br /> Conoco#01205 <br /> Site 16470 Cambridge Street, Lathrop <br /> Batch QC Report <br /> Prep(s) 5030B Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch#2003108108-1B 65 <br /> LCS 2003108108-1 B 65-008 Extracted 08/08/2003 Analyzed 08/08/2003 09 08 <br /> LCSD 2003108108-1 B 65-030 Extracted 08108/2003 Analyzed 08/08/2003 09 30 <br /> Compound Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 225 264 25 900 1056 160 69-129 20 <br /> Toluene 237 269 25 948 1076 126 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 205 223 25 820 892 84 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 492 469 500 984 938 76-114 <br /> Toluene-d8 519 532 500 1038 1064 88-110 <br /> Severn Trent Laboratories, Inc 08/18/200314 25 <br /> STL San Francisco* 1220 Quarry Lane Pleasanton CA 94566 page 23 of 24 <br /> Apart of Swem Trent Plc Tel 925 484 1919 Fax 926 484 1096*www sti-inc cam*CA DHS FLAP#2496 <br />