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Submission#: 2043-08-0508 <br /> STL <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> Gettler Ryan <br /> AM Deanna Harding <br /> 6747 Sierra Court Suite 3 <br /> Dublin, CA 94568 <br /> Phone (925)551-7444 Fax (925) 551-7899 <br /> Received 08115/2003 12 00 <br /> Prosect 180288 80 <br /> Conoco#11192 <br /> Site 1403 Country Club Blvd , Stockton <br /> Batch QC Report <br /> x <br /> Test(s) 8260FAB <br /> ,Prep(s) 5030B <br /> QC Batch#2003108128-1 C 64' <br /> Laboratory Control Spike Water a v <br /> ' <br /> LCS 2003!08128-1C C4-D44 Extracted 08/28/2003 Analyzed 08/28/2003 09 44' <br /> � , <br /> LCSD 2003108128-1 C 64-006 Extracted 08128/2003 Analyzed 08/28/2003 10 06 <br /> Conc ug/L Exp Conc Recovery% RPD Ctrl Limits% Flags <br /> Compound LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 239 269 25 956 1076 11 8 69-129 20 <br /> Toluene 253 273 25 1012 1092 76 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 230 247 25 920 988 71 65-165 20 <br /> Surrogates(s) <br /> 431 500 87 0 88 <br /> i,2-Dichloroethane-d4 435 2 76-1 i <br /> Toluene-d8 500 495 500 700 0 99 0 88-110 <br /> 09/09/2003 08 01 <br /> Sevem Trent Laboratones, Inc <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 page 21 of 23 <br /> A part of Seem Tient Pia Tel 925 484 1919 Fax 925 484 1096*www sU-inc com*CA DHS ELAP#2496 <br />