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Submission #. 2002-10-0036 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> Gettler Ryan STL San Francs <br /> Attn Deanna Harding 1220 Quarry Lan <br /> 6747 Sierra Court Suite J Pleasanton,CA 9 <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> Project 180138 80 www stl-mc corn <br /> J Received 10/01/2002 14 10 www chromalab com <br /> Tosco #6981 <br /> Site 4707 Pacific Avenue CA DHS FLAP#2496 <br /> Stockton, CA <br /> < Batch QC Report <br /> Prep(S) 50306 Test(s) 8260FAB <br /> Laboratory Control Spike Water QC Batch # 2002110/11-01 62 <br /> k <br /> LCS 2002/10111-0162-004 Extracted ,1011112002 Analyzed 10/11/2002 11 04 <br /> LCSD 2002110/11-0162-026 Extracted 10/11/2002 Analyzed 101111200211 26 <br /> Compound Conc ug/L Exp Conc Recovery RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 227 236 250 908 944 3 9 69-129 20 <br /> Toluene 255 256 250 1020 1024 0 4 70-130 20 <br /> Methyl tent-butyl ether(MTBE) 267 243 250 1068 972 94 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 520 484 500 1040 968 76-114 <br /> Toluene-d8 498 500 500 996 1000 88-110 <br /> • <br /> 10/15/2002 11 10 STL San Francisco is part of Severn Trent Laboratories, Inc Page 19 of 21 <br />