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Submission#: 2004-04-0264 <br /> Gas/BTEX Fuel Oxygenates by 8260B . <br /> URS Corporation STL San Francisco <br /> 1220 Quarry Lane <br /> AM.: Vemon Elarth Pleasanton,CA 94566 <br /> 2870 Gateway Oaks Drive, Suite 300 <br /> Sacramento, CA 95833 Tel:(925)484-1919 <br /> Phone: (916)679-2000 Fax: (916)679-2900 Fax:(925)484-1096 <br /> www.stl-inc.com <br /> Project: Consultant Project No: 38466402.000000 Received: 04/09/2004 09:35 www.chromalab.com <br /> BP Facility No: 548 cq p <br /> Site: 1612 W. Hammer Lane,StOCK& HS ELAP#2496 <br /> Prep(s): $0306 r Tests) 82608 <br /> Sample lb: 00548AEFIr-040804 Lab ID 20()444 0264.72 <br /> Sampled 04f0812004 13:15 Fxtracted 4!10120041.2 19; <br /> Matrix Air` QC 8atcti#: .2004/04110-16 69 <br /> . �. <br /> Compound Cone. MDL RL Unit Cone. MDL RL Unit Dilution Analyzed Flag <br /> Gasoline ND 34 50 mg/m3 ND 9.35 14 ppmv 1-00 041101200412:19 <br /> Benzene ND 0.16 0.50 mg1m3 ND 0.0495 0.15 ppmv 1.00 041101200412:19 <br /> Toluene ND 0.14 0.50 mg/m3 ND 0.0368 0.13 ppmv 1.00 041101200412:19 <br /> Ethylbenzene ND 0.15 0.50 mg/m3 ND 0.0342 0.11 ppmv 1.00 041101200412:19 <br /> Total xylenes ND 0.30 1.0 mg/m3 ND 0.0670 0.23 ppmv 1.00 04/10/2004 12:19 <br /> Methyl Cert-butyl ether(MTBE) ND 0.13 0.50 mg/m3 ND 0.0352 0.14 ppmv 1.00 04/10/2004 12:19 <br /> Surrogates(s) <br /> l 1,2-Dichloroethane-d4142.3 76-114_ 0 % 1.00 04/10/2004 12:19 <br /> /o <br /> Toluene-d8 95.0 88-110 % % 1.00 041101200412:19 <br /> 04114/2004 16:56 STL San Francisco is Dart of Severn Trent Laboratories.Inc. Page 3 of 5 <br />