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Submission 4: 2002-08-0355 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> Gettler Ryan STL San Francisco sr:.�� <br /> 1220 Quarry Lane <br /> Attn.: Deanna Harding <br /> 6747 Sierra Court Suite J Pleasanton,CA 94566 <br /> Dublin, CA 94568 Tel: (925)484-1919 <br /> Phone: (925) 551-7444 Fax: (925) 551-7899 Fax: (925)484-1096 <br /> Project; 1$0175.80 Received: 081161200214:25 www.stl-inc.com <br /> vvww.chromalab.com <br /> Tosco#11195 <br /> Site: 16500 South Interstate 5 CA DHS ELAP#2496 <br /> Lathrop, CA <br /> Batch'QC Report <br /> Prep(s) 5030B Test(s): 8260FAB ;: <br /> Laboratory.Control Spike: Water QC Batch 4 2002/08123-01,62 <br /> LCS 2002108123-01.62-031 `' Extracte.d:. 08/23/2002 Analyzed 08/23/2002 10:39 <br /> LCSA . .2002/08/23-01.62-056;; Extracted 08/23/2002 Analyzed: 08/23/2002 10:615. <br /> Compound Conc. uglL Exp.Conc. Recovery RPD Ctrl.Limits% Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 22.0 22.7 25.0 88.0 90.8 3.1 69-129 20 <br /> Toluene 25.5 24.8 25.0 102,0 99.2 2.8 70-130 20 <br /> Methyl terl-butyl ether(MTBE) 24.3 25.2 25.0 97.2 100.8 3.6 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 419 438 500 83.8 87.6 76-114 <br /> Toluene-d8 529 524 500 105.8 104.8 88-110 <br /> 08/29/2002 16:08 STL San Francisco is part of Severn Trent Laboratories, Inc. Page 24 of 30 <br />