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Submission #: 2002-08-0190 <br /> r Gas/BTEX Fuel Oxygenates by 82608 , <br /> Gettler Ryan STL San Francisco <br /> 1220 Quarry Lane <br /> Attn Deanna Harding Pleasanton,CA 94566 <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> www stl-inc corn <br /> Project 180198 80 Received 08/08/2002 15 00 www chromalab corn <br /> Tosco #08671 <br /> Site 8606 Thornton Rd CA DHS FLAP#2496 <br /> Stockton, CA <br /> Batch QC Report <br /> Prep(s), 50306 Test(s), 8260FAB <br /> Laboratory Control Spike Water CC Batch # 2002108116-01.62 <br /> LCS 2002/08/16-0162-013 Extracted 08116/2002 Analyzer/ 08116/2002 09 13 <br /> LCSD _2002108/16-01 62-018_ Extracted 08116/2002 Analyr;q 08116/2002 16.18 <br /> Compound Conc ug/L Exp Conc Recovery RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 192 185 25 0 768 740 3 7 69-129 20 <br /> Toluene 218 206 250 872 824 5 7 70-130 20 <br /> . Methyl ter!-butyl ether(MTBE) 223 224 250 892 896 0 4 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 438 432 500 876 864 76-114 <br /> Toluene-d8 500 496 500 100 0 99 2 1 188-1101 <br /> 08/19/2002 1131 STL San Francisco is part of Severn Trent Laboratories, Inc Page 11 of 12 <br />