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TL Submission #: 2003;04-0705 <br /> -SF <br /> GasIBTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Court Suite J <br /> _Dublin, CA 9456$ _ <br /> Phone (925) 551-7444 Fax (925) 551-7$99 <br /> Project 180183 80 Received 04/2812003 18 17 <br /> Tosco#01205 f <br /> Site 16470 Cambridge Street <br /> Lathrop, CA <br /> Batch QC Report <br /> Prep(s) 50308 Tests) 8260FAB <br /> Laboratory Control Spike Water QC Batch #2003105108-1b 65 <br /> LCS 2003705108-1b 65-002 Extracted 05/08/2003 Analyzed 05/08/2003 09 51 <br /> LCSD 2003/05108-1b 65-001 Extracted 05/08/2003 Analyzed 05/08/2003 10 13 <br /> Compound Conc ug/L Exp Conc Recovery RPD Ctrl Limas% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCS <br /> Benzene 258 261 25 1032 1044 1 2 69-129 20 <br /> Toluene 257 246 25 1028 984 44 70-130 20 <br /> Methyl Cert-butyl ether (MTBE) 335 332 25 11340 1328 09 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 493 486 500 986 97 2 76-114 <br /> Toluene-d8 480 491 500 960 98 2 88-110 <br /> Severn Trent Laboratories, Inc --0511312003 12 07— <br /> STL San Francisco' 1220 Quarry Lane,Pleasanton CA 945166 <br /> A pert of 5"&e 1,6.1 Plc Tel 925 484 1919 Fax 925 484 1096'www stl-inc corn'CA DHS E LAP#2496 Page 22 of 27 <br />