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rl <br /> � Submission#: 2004-04-0004 <br /> 155 <br /> Fuel Oxygenates by 8260B <br /> ATC Associates Inc. <br /> Attn.: John Love <br /> t 6602 Owens Drive Suite 100 <br /> Pleasanton, CA 94588 <br /> Phone: (925)460-5300 Fax: (925)463-2559 <br /> i� Project: 75.62503.3205 Received: 03/31/2004 16:30 <br /> Quik Stop 132 <br /> Site: 3555 West Hammer Lane, Stockton, CA <br /> Batch QC Re ort <br /> ' Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch#2004104109-01.68 <br /> LCS 2004104109-01.68-009 Extracted: 04/09/2004 Analyzed: 04/09/2004 08:09 <br /> LCSD 2004/04/09-01.68-028 Extracted: 04/09/2004 Analyzed: 04/09/2004 08:28 <br /> Compound Conc, ug/L Exp-Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> • Methyl tert-butyl ether(MTBE) 23.2 21.1 25.0 92.8 84.4 9.5 65-165 20 <br /> Benzene 22.3 22.0 25.0 89.2 88.0 1.4 69-129 20 <br /> Toluene 23.1 22.6 25.0 92.4 90.4 2.2 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 424 413 500 84.8 82.6 76-114 <br /> Toluene-d8 459 465 500 91.8 93.0 88-110 <br /> 5� <br /> Severn Trent Laboratories, Inc. 04/13/200416:29 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A p.105.wnTwlft Tel 925 484 1919 Fax 925 484 1096`www.stl-inc.com'CA DHS ELAP#2496 Page 19 of 21 <br /> r <br />