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' = M <br /> STL <br /> Submission M 2003-04-0389 <br /> MEFuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> i <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 <br /> Phone: (510) 336-1772 Fax: (590)336-9199 <br /> Project: 9902.013 Received: 04/15/2003 17:19 <br /> C. Navarra <br /> Batch QC Report <br /> `i Prep(s):: 5030B Test(s) 82608 <br /> :.= <br /> Laboratory Control:Spike Water QC Batch#2003104123-2x.62 <br /> LCS2003104123-2a.62-032 Extracted: 04/23/2003.. Analyzed: 04/23/2003 20:32: <br /> LCSD . 2003/04123=2x.62-054 Extracted-04/23/2003 <br /> 'Analyzed; 04/2312003 20:5 <br /> Compound Cone. ug/L Exp.Conc, Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 24.0 25.2 25 96.0 100.8 4.9 69-129 20 <br /> Toluene 25.7 24.2 25 102.8 96.8 6.0 70-130 20 <br /> t' = Methyl tett-butyl ether(MTBE) 27,3 29"7 25 109.2 118.8 8.4 65-165 20 <br /> surrogates(s) <br /> 1,2-Dichloroethane-d4 510 515 500 102.0 103.0 76-114 <br /> Toiuene-d8 510 501 500 102.0 100.2 88-110 <br /> 6' <br /> i <br /> i <br /> Severn Trent Laboratories, Inc. 0510612003 16:18 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A put of G om TwlPle Tel 925 484 1919 Fax 925 484 1096*www.stl-lnc.corn*CA DHS ELAP#2496 Page 22 of 28 <br />