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k t <br /> © Submission#: 2004.04-0575 <br /> STL <br /> Fuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 <br /> Phone: (510)336-1772 Fax: (510) 336-9119 <br /> Project: 9902.015 Received: 04/19/2004 19:40 <br /> C. Navarra <br /> Site: 7500 W. 11th St., Tracy <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B 4 <br /> Laboratory Control Spike Soil QC Batch#2004104/26-02.65 <br /> LCS 2004104126-02.65-034 Extracted: 04/26/2004 Analyzed: 041261200417:34 <br /> LCSD 2004104126-02.65-056 .—Extracted: 04/26/2004 ry Analyzed: 04/26/2004 17:56 <br /> Compound Conc. ug/Kg Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS 1LCSD <br /> Benzene 47.9 50.9 50.0 95.8 101.8 6.1 69-129 20 <br /> Toluene 45.8 47.0 50.0 91.6 94.0 2.6 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 473 520 500 94.6 104.0 70-121 <br /> Toluene-d8 456 466 500 91.2 93.2 81-117 <br /> I <br /> Severn Trent Laboratories, Inc. 04/28/2004 14:25 <br /> STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096*www.stl-inc.com*CA DHS ELAP#2496 Page 14 of 14 <br />