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a <br /> STLSubmission#: 2003-05-0298 <br /> Gas1BTEX Fuel Oxygenates by 8260B <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 180137 80 Received 05/09/2003 18 30 <br /> Tosco#5886 <br /> Site 2701 West March Lane <br /> Stockton, CA <br /> Batch QC Report ' <br /> Prep(s)- 50306 _ Test(s) 8260FAB - <br /> LaboratoryControl Spike Water QC Batch#2003/05/2"165 <br /> LCS 2003105120-01 65-002 - Extracted 05/20/2003 Analyzed 05/20/2003 09.22 <br /> LCSD,' 2003105120-01 65-001 Extracted 05120/2003 Analyzed 05120/2003 09 44, <br /> Compound Conc ug/L Exp Conc Recovery RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 235 228 250 94 0 912 3 0 69-129 20 <br /> Toluene 241 235 250 964 94 0 2 5 70-130 20 <br /> Methyl tent-butyl ether(MTBE) 300 310 250 1200 1240 3 3 65-165 1 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 477 482 500 95 4 964 76-114 0 <br /> Toluene-d8 505 509 500 1010 1018 88-110 0 <br /> i <br /> li <br /> Sevem Trent Laboratories, Inc 05/27/2003 11 41 <br /> STL San Francisco'`1220 Quarry Lane,Pleasanton,CA 94566 <br /> A CBn of S v rn Tr.rn RG Tel 925 484 1919 Fax 925 484 1096*www sti-inc oom*CA DHS ELAP#2496 Page 19 of 20 <br />