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Submission# 2002-07-0263 <br /> Gas/BTEXFuel Oxygenates by 82606 <br /> 1110:04916M <br /> Gettler Ryan STL San Francis <br /> Attn Deanna Harding Plea anon,Quarry Lan <br /> 6747 Sierra Court Suite J Pleasanton,ca d <br /> Dublin, CA 94568 Tel (925)484-1919 <br /> Phone (925) 551-7444 Fax (925) 551-7899 Fax (925)484-1096 <br /> www orn <br /> Protect 180238 80 Received 07/12/2002 17 05 www chro lab } <br /> www chromalab coin <br /> Tosco#4409 <br /> Site 1502 N EI Dorado St CA DHS ELAP#2496 <br /> Stockton, CA <br /> Batch QC Report <br /> a <br /> i, 7 x^ 3 � n II• M �� <br /> Preps) 5030B, rr=; ;,�Test(s) 8260FAB <br /> Laboratory' Control Spikeater, QC Batch#,200210712a-02;6 ` <br /> WS& x� •:s{'f 5. kn � to `w f if tea# W Y R ` ry 3 � a t 3 Yi �; �' tY <br /> LCS -` x 2002/07/25-02 62-050 '' Extracted 07125/2002 AnOwed 07125/2002 09 503 <br /> LCSD`~_��2602/07/25-02 62-p13 m� ',� W� Extracted 07/25/2002 x_�_Analy:ed.,Q7125/20Q210�I_Z <br /> Compound Conc ug/L. Exp Conc Recovery RPD Ctrl Limits% Flags <br /> LCS LCSD LCS LCSD % Rec RPD LCS LCSD <br /> Benzene 228 236 250 912 944 34 69-129 20 <br /> Toluene 246 24 8 250 980 992 1 2 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 271 275 260 1084 1100 15 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 518 532 500 1036 1064 76-114 <br /> Toluene-d8 537 505 500 1074 1010 88-110 <br /> 0 <br /> 07/261200215 10 STL San Francisco is part of Severn Trent Laboratories, Inc Page 18 of 20 <br />