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Submission#: 2002-06-0538 DJJ Di JM <br /> Gasoline smigulnum <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.stl-inc.com <br /> Project: 050T.02926.00 Received: 06/27/2002 12:50 www.chromalab.com <br /> ' Tower Park <br /> CA DHS ELAP#2496 <br /> ' Batch QC Report <br /> Prep(s): 5030 Test(s):8015M <br /> tMatrix Spike(MS/MSD) Water QC Batch#2002/06/28-01.05 <br /> MW-4 >> MS Lab ID: 2002-06-0538-002 <br /> ' MS: 2002/06/28-01.05-011 Extracted:06/28/2002 Analyzed: 06/28/200212;50 <br /> Dilution: 1.00 <br /> MSD: 2002/06/28-01:05-012 Extracted:06/28/2002 Analyzed; 06/28/200213:22 <br /> ' Dilution: 1.00 <br /> Compound Conc. u pk.Leve Recovery Limits% Flags <br /> MS MSD Sam le u /L I MS I MSD RPD I Rec. RPD MS MSD <br /> Gasoline 484 486 ND 500 96.8 97.2 0.4 165-135 20 <br /> Surrogates) <br /> 4-Bromofluorobenzene-FID 411 364 500 82.2 72.7 50-150 <br /> 1 .. <br /> 1• <br /> 071032002 13:45 STL San Francisco is Dart of Severn Trent Laboratories.Inc. Page 6 of 7 <br />