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IO <br /> STL <br /> Submission M 2003-01-0323 <br /> P Gas1BTEXFuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 <br /> Prone: (510) 336-1772 Fax: (510) 336-9119 <br /> Project: 9902.013 Received: 01/20/2003 16:24 <br /> -; C. Navarra <br /> Site: 7500 W. 11th St. <br /> Tracy, CA <br /> Batch QC:Report <br /> Prep(s): 50306 Test(s): 8260FAB <br /> } = Laboratory Control Spike Water QC Batch#:2003/01/22-01.27 <br /> LCS 2003101122-01.27-004 Extracted: 01/22/2003 Analyzed: 01/22/200312:45 <br /> LCSD 2003101122-01.27-005 Extracted: 01/22/2003 Analyzed: 011221200313:14 <br /> Compound Conc. ug/L Exp,Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 21.4 21.2 25.0 85.6 84.8 0.9 69-129 20 <br /> Toluene 23.5 21.4 25.0 94.0 85.6 9.4 70-130 20 <br /> Methyl Cert-butyl ether(MTBE) 25.3 24.6 25,0 101,2 96.4 2.8 65-165 20 <br /> ;^ <br /> Surrogates(s) <br /> r 1,2-Dichloroethane-d4 488 473 500 97.6 94,6 76-114. <br /> ~=` Toluene-d8 496 488 500 99.2 97.6 88-110 <br /> $r 1! <br /> L-'f <br /> i01/29/2003 11:03 <br /> Severn Trent Laboratories, Inc. <br /> STL San Francisco"1220 Quarry Lane, Pleasanton,CA 94566 <br /> -_-�! A pard of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096`www,stl-Inc,com`CA DHS ELAP#2496 Page 19 of 24 <br />