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Submission#: 2002-06-0146 <br /> Gas/BTEXFuel Oxygenates by 82606 <br /> ti , r1 1 <br /> Gettler Ryan STL San Francisco <br /> Attn Deanna Harding 1220 Quarry Lane <br /> 6747 Sierra Court Suite J Pleasanton,CA 94566 <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925)551-7899 Fax (925)484-1096 <br /> www stl-inc com <br /> Project 6981 Received 06/10/2002 16 41 www chromalab corn <br /> Tosca <br /> Site 4707 Pacific Avenue CA DHS FLAP#2496 <br /> Stockton, CA <br /> Batch QC Report <br /> Prep(s) 5030B _ Test(s) 8260FAB <br /> Laboratory Control Spike a _ Water QC Batch#2002106113-01.27 <br /> ! Ae \ t F <br /> E 4 ^ > <br /> LCS-1 2002106/13-01 27-003 Extracted 06113/2002 Analyzed'06113/2002 10 46 <br /> LCSD '2002/06/f3--01 3=01 27-004 extracted 06/13/2002 Analyzed 06113/2002 11 15 <br /> Compound Conc ug/L Exp Conc Recovery RPD Ctrl Limas% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 248 238 250 992 952 41 69-129 20 <br /> Toluene 252 24 7 250 1008 988 2 0 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 216 198 25 0 864 792 8 7 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 538 508 500 1076 1016 76-114 <br /> Toluene-d8 521 1476 1500 11042 195 2 88-110 <br /> 08/01/2002 15 57 STL San Francisco is part of Severn Trent Laboratories, Inc Page 24 of 26 <br />