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Submission #: 2002-08-0355 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> M.111 IM , <br /> Gettler Ryan STL San Francisco <br /> 4 >=- 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 /> www.stl-inc.com <br /> Project: 180175.80 Received: 081161200214:25 www.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): 50308 <br /> Tests) 8260FA8:;., <br /> Laboratory Control Spike Water QC Batch # 2002/08/26-01.27.... <br /> LCS 2002108126-01:27-004 Extracted: 08/26/2002 Analyzed 0812.6/200211.:04 <br /> LCSD,. 2002/08/26-01.27-005 Extracted: 08/26/2002 Analyzed. 081261200211:30'.'. <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limils% Flags <br /> LCS LCSD LCS LCSD % Rec. I RPD LCS LCSD <br /> Benzene 24.1 24.2 25.0 96.4 96.8 0.4 69-129 20 <br /> Toluene 26.2 26.4 25.0 104.8 105.6 0.8 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 29.1 29.4 25.0 116.4 117.6 1.0 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 537 547 500 107.4 109.4 76-114 <br /> Toluene-d8 475 509 500 95.0 101.8 88-110 <br /> 08/29/2002 16:08 STL San Francisco is part of Severn Trent Laboratories, Inc. Page 25 of 30 <br />