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Submission#: 2002-07-0582 <br /> F` # Gas/BTEXFuel Oxygenates by 8260B <br /> t � <br /> -' San Joaquin Company, Inc. 5TL San Francisco <br /> Attn.: Plea Quarry Lane <br /> Dai Watkins <br /> 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.stl-inc.com <br /> _..� Project: 9902.013 Received: 07129/200217:28 www"chromalab.com <br /> C. Navarra <br /> CA DNS ELAP#2496 <br /> =j Batch QC Report <br /> Prep(s): 50308 Tests) 8260FAB <br /> 'y Laboratory Control SpikeWater QC Batch#'2002108101-01.62 <br /> LCS 2002/08101-01.62-011 Extracted: 08/01/2002 " Analyzed;08/01/2002 09:11 <br /> LCSD 2002/08101-01,62-033 Extracted: 08/01/2002 Analyzed: 0810112002.09:33 <br /> -_; <br /> Conc. ug/L Exp.Conc. Recovery RPD Ctrl,Limits% Flags <br /> Compound <br /> LCS LCSD LCS LCSD % Rec. JRPDLCS LCSD <br /> Benzene 19"0 19"6 25.0 76,0 78.4 3.1 69-129 20 <br /> Toluene 22"6 21.9 25"0 90,4 87.6 3.1 70-130 20 <br /> Methyl tent-butyl ether(MTBE) 23,0 22.6 25.0 92.0 90.4 1.8 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 429 427 500 85.8 85.4 76-114 <br /> Toluene-d8 598 533 500 103,6 106.6 88-110 <br /> '.1 <br /> 'i <br /> 08/0212002 15:08 STL San Francisco Is part of Severn Trent Laboratories,Inc, Page 19 of 21 <br />