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Submission#: 2002-OM639 <br /> Gasoline R.1 1741,41.16 . <br /> SECOR- Lafayette STL San Francisco <br /> 1220 Quarry Lane <br /> Attn.: Neil Doran Pleasanton,CA 94566 <br /> 57 Lafayette Circle, 2nd Floor <br /> ' Lafayette, CA 94549-4321 Tel:(925)484-1919 <br /> Phone: (925)299-9300 Fax: (925)299-9302 Fax:(925)484-1096 <br /> www.stFinc.com <br /> Project: 050T.02926.00 Received: 09/26/200215:00 www.chromalab.com <br /> ' Tower Park Marina <br /> CA DHS ELAP#2496 <br /> ' Batch QC Report <br /> Prep(s): 5030 Test(s): 8015M <br /> Laboratory Control Spike Water QC Batch#2002/10/03-01.02 <br /> LCS 2002/10/03-01.02-006 Extracted: 10/03/2002 Analyzed: 10/03/2002 09:43 <br /> ' LCSD 2002/10/03-01.02-007 Extracted: 10/03/2002 Analyzed: 10/03/200210:17 <br /> Compound Conc. ug/L I Exp.Conc.1 Recovery RPD Ctd.Limits 0 Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> ' Gasoline 470 527 500 94.0 105.4 11.4 75-125 20 <br /> Surrogates(s) <br /> 4-Bromofluorobenzene-FID 547 557 500 109.4 111.4 50-150 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> 1 <br /> ' 10/04/2002 14:32 STL San Francisco is part of Severn Trent Laboratories,Inc. Page 6 of 8 <br />