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STL .s <br /> „ Submission: 2004-09-0664 <br /> Fuel Oxygenates by 82608 <br /> Wright Environmental Services Inc <br /> Attn.: Maria Reid <br /> 67 E 10th Street <br /> Tracy, CA 95376-4001 <br /> Phone: (209)833-0758 Fax:(209) 832-5152 <br /> Project: BTS#040920-RM-1 Received: 09/22/2004 18:15 <br /> Site:' M & M Builders, 8111 W. 11th Street, <br /> Tracy,CA <br /> Batch QC Report <br /> n _ <br /> Prep(s): 503013 . a. Test(s): 8260B <br /> Laboratory Control Spike Water.! .QC Batch#,2004/09/29-01.64 <br /> LCS 2004/09/29-01'64-013 Extracted: 09/29/2004 Analyzed: 09/29/2004 08:13 <br /> LCSD 2004/09/29-01:64-035 Extracted: 09/29/2004 Analyzed: 09/29/2004 08:35 <br /> Compound P 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)' 25.4 26.9 25.0 101.6 107.6 5.7 65-165 20 <br /> Benzene 122.6 23.3 25.0 90.4 93.2 3.1 69-129 20 <br /> Toluenei' 27.1 28.3 25.0 '108.4 113.2 4.3 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 481 487 500 96.2 97.4 72-128 <br /> Toluene-d8 532 523 500 106.4 104.6 80-113 <br /> j <br /> 4 <br /> j x <br /> ' a <br /> Severn Trent Laboratories, Inc. <br /> 09/30/2004 14:12 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> 1 Apart of Severn Trent Pm Tel 925 484 1919'`'Fax 925 484 1096 www.stl-inc.com'CA DHS ELAP#2496 Page 4 of 4 <br />