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S T L <br /> Submission#• 2004-08-0791 <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> URS Corporation <br /> Attn Vern Elarth <br /> 2870 Gateway Oaks Drive, Suite 300 <br /> Sacramento, CA 95833 <br /> Phone (916)679-2000 Fax (916)679-2900 <br /> Project Consultant Project No 38466452 00000 Received 08/31/2004 09 20 <br /> BP Facility No 2186 <br /> Site 3212 North California Street <br /> Prep(s) 50308 Test(s) 8260E <br /> Sample ID 02186AEFF-083004 Lab ID 2004-08.0791 -3 <br /> Sampled 08/30/2004 09 45 Extracted 8/31/2004 13 55 <br /> Matrix Air QC Batch## 2004108131-1 E 68 <br /> Compound Conc RL Unit Conc RL Unit Dilution Analyzed Flag <br /> Gasoline NO 50 mg/m3 NO 14 ppmv 1 08/3112004 13 55 <br /> Benzene NO 050 mg/m3 NO 015 ppmv 1 08/31/2004 13 55 <br /> Toluene NO 050 mg/m3 NO 013 ppmv 1 08/31/2004 13 55 <br /> Elhylbenzene NO 0 50 mg/m3 NO Oil ppmv 1 08/31/2004 13 55 <br /> Total xylenes NO 1 0 mg1m3 ND 023 ppmv 1 08131!2004 13 55 <br /> Methyl lert-butyl ether ND 0 50 mg/m3 ND 0 14 ppmv 1 08/31/2004 13 55 <br /> Surrogate(s) <br /> 1 2-Dichloroethane-d4 1089 72-128 % % 1 08/31/2004 13 55 <br /> Toluene-d8 94 5 80-113 % % 1 08/31/2004 13 55 <br /> Severn Trent Laboratories, Inc 09/15/200415 16 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton CA 94566 <br /> A W Of S-"Tree e< Tel 925 484 1919 Fax 925 484 1096"www sti-mc com'CA DHS FLAP#2496 Page 4 of 7 <br />