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T <br /> � Submission#: 2003-03-0131 <br /> Si Fuel Oxygenates by 8260B <br /> ATC Associates Inc. <br /> Attn.: Jim Lehrman <br /> ' 6602 Owens Drive Suite 100 <br /> Pleasanton, CA 94588 <br /> Phone: (925)460-5300 Pax: (925) 463-2559 <br /> ' Project: 75.62503.3204 Received: 03/07/2003 08:35 <br /> Quik Stop#132 <br /> Batch QC Report <br /> Prep(s): 503.013 Test(s): 8260B <br /> Laboratory Control Spike Water QC Batch#2003103/10-01.62 <br /> 1 LCS 2003103110-01.62-038 Extracted: 03/10/2003 Analyzed: 03110/200311:38 <br /> LCSD 2003/03/10-01.62-000 Extracted: 03/10/2003 Analyzed: 031101200312:00 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. I RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 22.4 21.8 25.0 89.6 87.2 2.7 65-165 20 <br /> Benzene 24.5 24.3 25.0 98.0 97.2 0.8 69-129 20 <br /> Toluene 25.1 25.1 25.0 100.4 100.4 0.0 70-130 20 <br /> Sumogates(s) <br /> 1,2-Dichloroethane-l4 523 512 500 104.6 102.4 76-114 <br /> Toluene-d8 1498 1483 1500 199.6 196.6 1 188-110, <br /> 0 C/e <br /> YA1 <br /> Severn Trent Laboratories, Inc. 03!1212043 17:18 <br /> I STL San Francisco-1220 Quarry Lane,Pleasanton,CA 94566 <br /> p part or Sevem trent pk Tel 925 484 1919 Fax 925 484 1096'www.sti-inc.com'CA DHS ELAP#2496 Page 15 of 19 <br />