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Submission#: 2003-05-0394 <br /> STL <br /> ;J Gas1BTEX Fuel Oxygenates by 8260B <br /> Gettier 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: 180175.80 Received: 05/14/2003 16:56 <br /> Tosco#11195 <br /> Site: 16500 S. Interstate 5, Lathrop <br /> Batch QC Report . a. <br /> —._ <br /> Preps} 5000Tests} $260FAB <br /> Laboratory Control Spike: water QC Batch'.#200 105127-1e 65; <br /> LCS 240310'5127 1e.65 OQ2:` Lxtracied 0512712003 71200342;23. <br /> LCSD.;. 2003/05127 1e.65 001 , „ EXtraeted 05/2712003 Analyzed 05122043'12 45 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. I RPD LCS LCSD <br /> Benzene 25.0 25.1 25 100.0 100.4 0.4 69-129 20 <br /> Toluene 24.7 24.1 25 98.8 96.4 2.5 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 31.7 33.0 25 126.8 132.0 4.0 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichioroethane-d4 470 486 500 94.0 97.2 76-114 <br /> Toluene-d8 507 494 500 101.4 98.8 88-110 <br /> Severn Trent Laboratories, Inc. 05/29/200314:50 <br /> STL San Francisco'1220 Quart'Lane,Pleasanton,CA 94566 <br /> Apart of Se T'enl Plc Tel 925 484 1919 Fax 925 484 1096'www.sti-inc.com'CA DHS ELAP#2496 Page 33 of 36 <br />