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•� J <br /> Submission# 2002-11-0408 <br /> Gas/BTEX Fuel Oxygenates by 82608 ECEMMM <br /> . Gettler Ryan STL San Francisco <br /> 1220 Quarry Lane <br /> Attn Deanna Harding Pleasanton,CA 94566 <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> Project 180238 80 Received 11/19/2002 16 20 www chrom ab com <br /> Tosco#4409 <br /> Site 1502 N EI Dorado St DA DHS ELAP#2496 <br /> Stockton, CA <br /> n tiF r Batch QC Report w <br /> Preps) 50368 r _ µ Y - `'Test(s), 8260FAB, <br /> Laboratory Control Spike wx� ' " Water QC Batch#2002111125-01.27' <br /> N <br /> LCS2002111/25-01 27-004 " r Extracted 11/2512002 Analyzed 1112512002 12 18 <br /> UCSD` 2002/111'25-01-27-005 Extracted 11/25/2002 Analyzed"1 1/2512002 12 46 <br /> Compound Conc ug/L Exp Conc Recovery RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 257 264 25 0 1028 1056 2 7 69-129 20 <br /> Toluene 25 7 25 6 25 0 1028 1024 0 4 70-130 20 <br /> Methyl tert-butyl ether (MTBE) 29 0 25 7 25 0 1160 1028 121 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 457 448 500 914 896 76-114 <br /> Toluene-d8 1489 1489 1500 1978 1978 1 188-110 <br /> 121021200210 20 STL San Francisco is part of Severn Treni Laboratories,Inc Page 17 of 19 <br />