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STLSubmission #: 2003-09-0024 <br /> Gas/BTEX Fuel Oxygenates by 82608 <br /> Gettler Ryan <br /> Attn.: Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 <br /> Phone: (925)551-7444 Fax: (925) 551-7899 <br /> Project: 180175.80 Received: 09/02/2003 12:05 <br /> Conoco 11195 <br /> Site: 16500 South Interstate 5, Lathrop <br /> Batch QC Report . . <br /> Prep(s): 503013. 8260FA8`. <br /> Laboratory Control Spike Water -QC B2itG?1#2003109108-02 66 <br /> LCS 2003109108-02.66-000 Extracted: 09108/2003 Analyzed. 09108/2003.21::00. <br /> LCSD 2003109108-02.66-024 . Extracted: 09108/2003 Analyzed::09108/2003 21:24 <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. J RPD LCS I LCSD <br /> Benzene 21.0 21.9 25.0 84.0 87.6 4.2 69-129 20 <br /> Toluene 21.5 22.7 25.0 86.0 90.8 5.4 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 21.0 22.0 25.0 84.0 88.0 4.7 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 475 504 500 95.0 100.8 76-114 <br /> Toluene-d8 1506 519 500 101.2 103.8 88-110 <br /> Severn Trent Laboratories, Inc. 091121200316:55 <br /> STL San Francisco, 1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part ut Sevem Trent Plc Tel 925 484 1919 Fax 925 484 1096*www.sti-inc.com*CA DHS ELAP#2496 Page 25 of 30 <br />