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IST <br /> � Submission #: 2003-02-0470 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> -s 1 <br /> Gettler Ryan <br /> Attn.: Deanna Harding <br /> 6747 Sierra Court Suite J <br /> Dublin, CA 94568 y <br /> Phone: (925) 551-7444 Fax: (925) 551-7899 <br /> Project: 180175.80 Received: 02124/2003 14:15 . <br /> Tosco#11195 <br /> Site: 16500 So. Interstate 5 <br /> Lathrop, CA <br /> Batch QC Report <br /> P:repO 50306:;. <br /> Test(s)..8260FAB <br /> LaboratoryControl.Spike Water . QC Batch# 2003103103-01.2.7 <br /> 'CS 2003103103-01.27-003 Extracted: 03/0312003Analyzed: 03103/2003 90:57 <br /> LCSD 2003103/03-01.27-006 Extracted: 03103/2003 Analyzed; 03103/2003',13:24 <br /> Compound Conc. ug/L Exp.Conc. Recovery RPD Ctrl.Limits% f=lags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD.... <br /> Benzene 21.6 22.8 25.0 86.4 91.2 5.4 69-129 20 <br /> Toluene 22.3 22.9 25.0 89.2 91.6 2.7 70-130 20 <br /> Methyl tert-butyl ether(MTBE) 26.3 25.4 25.0 105.2 101.6 3.5 65-165 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 521 501 500 104.2 100.2 76-114 <br /> Toluene-d8 492 484 500 98.4 96.8 88-110 <br /> Severn Trent Laboratories, Inc. 03104/200312:38 <br /> STL San Francisco" 1220 Quarry Lane, Pleasanton,CA 94556 <br /> A pert of nevem Tenl Plc Tel 925 484 1919 Fax 925 484 1096'www.sti-inc.com"CA DHS ELAN 2496 Page 4 of 4 <br />