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STL Submission #' 2002-11-0523 <br /> GaslBTEX Fuel Oxygenates by 82608 <br /> Gettler Ryan <br /> Attn Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 945£8 <br /> Phone (925) 551-7444 Fax (925) 551-7899 <br /> Project 180137 80 Received 1112212002 12 45 <br /> Tosco#5886 <br /> Site 2701 West March Avenue <br /> Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch # 2002112105-01.27 <br /> LCS 2002112105-01 27-005 Extracted 12/05/2002 Analyzed 12105/200211 02 <br /> LCSD 2002112105-01.27-006 Extracted 12105/2002 Analyzed, 12105/2002 11 29 <br /> Compound Conc ug/L Exp Conc Recovery JRP& Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 246 245 260 984 98 0 04 69-129 20 <br /> Toiuene 244 24 2 25 0 976 968 0 8 70-130 20 <br /> Methyl tert-butyl elher(MTBE) 246 277 25 0 904 1108 119 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 424 429 500 848 858 76-114 <br /> Toluene-d8 479 484 500 958 .968 88-110 <br /> I <br /> 1� <br /> Severn Trent Laboratories, Inc 12105/2002 14 12 <br /> STL San Francisca"1220 Ouarry Lane,Pleasanton CA 94566 <br /> A pen of Serax Tretl Plc Tel 928 484 1919 Fax 925 4841095"www so-ine eom'CA DHS ELAN 2496 Page 28 of 29 <br />