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Submission#: 2002-10-0555 <br /> Gas/BTEXFuel Oxygenates by 8260B , <br /> i San Joaquin Company, Inc. STL San Francisco <br /> 9220 Quarry Lane <br /> i Attn.: Dai Watkins Pleasanton,CA 94566 <br /> 1120 Hollywood Ave, Suite 3 <br /> Oakland, CA 94602-1459 Tel:(925)484-1919 <br /> Phone: (510)336-1772 Fax: (510) 336-9119 Fax:(925)484-1096 <br /> www.stf-ine.com <br /> Project: 9902.013 Received: 101251200218:55 www.chromalab.com <br /> C. Navarra 7500 W. 11 th St. <br /> l:a Site: Tracy CA DHS ELAP#2496 <br /> Batch QC Report <br /> Prep(s): 50306 Test(s)::8260B <br /> 7 Laboratory Control Spike Water QC Batch#200211'0130-01.27 <br /> LCS 2002110130-01.27-003 Extracted: 10/30/2002 Artalyzed:.10/301200210:56' <br /> LCSD 20021101307.01.27-004 Extracted: 10/30/2002 Analyzed:_10/301/2002,11 22_, <br /> Compound 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) 27.0 27.8 25.0 108.0 111.2 2.9 65-165 20 <br /> Benzene 25.9 25.9 25.0 103.6 103.6 0.0 69-129 20 <br /> Toluene 26.2 26.7 25.0 104.8 106.8 1.9 70-130 20 <br /> :.,,. ::;•, Surrogates(s) <br /> ;1 1,2-Dichloroethane�l4 467 494 5D0 93.4 98.8 76-114 <br /> Toluene-d8 515 514 500 103.0 102.8 88-110 <br /> i <br /> s <br /> �i <br /> r _ <br /> I <br /> 1 <br /> 11/0412002 10:37 STL San Francisco is part of Severn Trent Laboratories,Inc. Page 18 of 22 <br /> i <br />