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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): 50306 Test(s):.8260FAB <br /> Laboratory.Control Spike Water QCBatch#2003!09110-1 B fit <br /> iCS. 2003109110-1 B.62-050 Extracted: 09/10/2003 Analyzed: 09/10/2003 08:50 <br /> LCSD 20031091.10-18.62-012 Extracted:09/10/2003 Analyzed: 091.1012003:09:12 <br /> Compound Conc. ug/L I Exp.Conc. Recovery% RPD Ctrl.Limits % Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 26.5 23.7 25 106.0 94.8 11.2 65-165 20 <br /> s <br /> Benzene 24.2 24.4 25 96.8 97.6 0.8 69-129 <br /> 20 <br /> Toluene 23.7 23.6 25 94.8 94.4 0.4 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 477 447 500 95.4 89.4 76-114 <br /> Toluene-d8 495 501 500 99.0 100.2 88-110 <br /> i <br /> Severn Trent Laboratories, Inc. 09112r2003 16:55 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 Page 27 of 30 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096`www.sti-inc.com CA DHS FLAP#2496 <br />