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Submission#: 2004-05-0646 <br /> Gas/BTEX Fuel Oxygenates by 8260B . <br /> URS-Sacramento, CA STL San Francisco <br /> Attn.: Vernon Elarth 1220 Quarry LanePleasanton,CA 94566 <br /> 2870 Gateway Oaks Dr., Ste 300 <br /> Sacramento, CA 95833 Tel:(925)484-1919 <br /> Phone: (916)679-2000 Fax: (916)679-2900 Fax:(925)484-1096 <br /> www.sti-inc.com <br /> Project: Consultant Project No: 38466402.00000 Received: 05/1912004 09:45 www.chromalab.com <br /> BP Facility No: 548 <br /> Site: 1612 W. Hammer Lane, Stock&PH$ELAP112496 <br /> Batch QC Re ort 4 ...; <br /> Prep(s): 50306 Tests) 8260 <br /> 'y�yaM Fu <br /> Laboratory Control Spike Water QC:Batch'#2004105/19-1D 65 <br /> LCS 2004105110-1D'65-001. Extracted::05/1912004 Analyzed 0 511 912 004 07 0 1}{x <br /> V x; <br /> LCSD 2004105/19-ID.-65-023 Extracted: 05/1912004 �Analyzec! ,05/191200,4:07,23x,,, <br /> Compound Conc. ug/L Exp.Conc. Recovery% RPDJ Ctrl.Litnits% Flags <br /> LCS LCSD LGS LCSD % Rec. RPD LCS LCSD <br /> Methyl tert-butyl ether(MTBE) 24.3 20.5 25 97.2 82.0 17.0 65-165 20 <br /> Benzene 20.5 21.3 25 82.0 85.2 3.8 69-129 20 <br /> Toluene 20.5 21.4 25 82.0 85.6 4.3 70-130 20 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 493 495 500 98.6 99.0 72-128 <br /> Toluene-d8 484 509 500 96.8 1 101.8 I 80-113 <br /> i <br /> i <br /> 05/23/2404 19:50 STL San Francisco is part of Severn Trent Laboratories.Inc. Page 5 of 5 <br /> i <br />