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it <br /> ' ® TT S .i. .0..J Submission : 2005-04-0622 <br /> Gas/BTEXFuel Oxygenates by 8260B (High Level) <br /> Treadwell & Rollo-San Francisco <br /> Attn . : David Dixon <br /> 555 Montgomery Street, Suite 1300 <br /> San Francisco, CA 94111 -2554 <br /> Phone: (415) 955-9040 Fax: (415) 955-9041 <br /> Project: 2597. 11 Received: 04/20/2005 14:00 <br /> 130 N Hunter St, <br /> Batch QC Report <br /> Prep(s): 5030B Test(s): 8260B <br /> Laboratory Control Spike Soil QC Batch # 2005/05/01 -03.69 <br /> LCS 2005/05/01 -03 .69-018 Extracted : 05/03/2005 Analyzed: 05/03/200512: 18 <br /> LCSD 2005/05/01 -03 .69-038 Extracted: 05/03/2005 Analyzed: 05/03/200512:38 <br /> Compound Cone. ug/Kg Exp.Conc. Recovery % RPD Ctrl.Limits % Flags <br /> LCS LCSD LCS LCSD % Rec. RPD LCS LCSD <br /> Benzene 7290 8750 10000 72.9 87.5 18.2 69-129 20 <br /> Toluene 8400 8930 10000 84.0 89.3 6.1 70-130 20 <br /> Surrogates(s) <br /> 1 ,2-Dichloroethane-d4 253 252 250 101 .2 100.8 53-129 <br /> Toluene-d8 253 259 250 101 .2 103.6 47-136 <br /> Severn Trent Laboratories, Inc. 05/03/200515:40 <br /> STL San Francisco * 1220 Quarry Lane, Pleasanton, CA 94566 <br /> A W of s vem tram Pm Tel 925 484 1919 Fax 925 484 1096 * www.stl-ino.com * CA DHS ELAP# 2496 Page 4 of 5 <br />