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STLSubmission #: 2002-11-0523 <br /> r <br /> Gas/BTEX 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 11/22/2002 12 45 <br /> Tosco# 5886 <br /> Site 2701-West March Avenue - <br /> Stockton, CA <br /> �Y� w Batch QC Report— <br /> Prep(s) <br /> eport <br /> Pre s 50306 <br /> pO Test(s) 8260FAB r <br /> H � s <br /> - <br /> r <br /> Laboratory Control Spike f ' k Water _ QC Batch# 2002112103-01.27 <br /> LCS 2002112103-01 27-004 Extracted 312/0312002 Analyzed 12/03/2002 12 31 <br /> f <br /> LCSD,, 2002112103-01 27-005 Extracted 12/03/2002 Analyzed 12/03/2002 12 52 <br /> Compound Conc ug/L Exp Conc. Recovery RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCS <br /> Benzene 23 7 260 250 948 1040 9 3 69-129 20 <br /> Toluene 233 256 25 0 932 1024 94 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 266 274 25 0 1064 1096 30 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 425 428 500 850 856 76-114 <br /> Toluene-d8 483 485 500 966 970 88-110 <br /> Severn Trent Laboratories, Inc 12/05/2002 14 12 <br /> $TL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> peeo+se mn rrem Tel 928 484 1919 Fax 925 484 1096"www stl-inc corn`CA DHS ELAN 2496 Page 27 of 29 <br />