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STLSubmission# 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) 5030B Test(s) 82608 <br /> Sample ID 02186AMID-083004 Lab ID 2004-08-0791 -2 <br /> Sampled 08/30/2004 09 50 Extracted 8/31/2004 14 14 <br /> Matrix Air QC Batch# 2004108131-1E 68 <br /> Compound Conc RL unit Conc RL Unit Dilution Analyzed Flag <br /> Gasoline NO 50 mg/m3 NO 14 ppmv 1 08/3112004 14 14 <br /> Benzene ND 050 mg/m3 NO 015 ppmv 1 08/31/2004 14 14 <br /> Toluene NO 050 mg/m3 NO 013 ppmv 1 08/31/2004 14 14 <br /> Bthylbenzene ND 0 50 mg/m3 NO 0 11 ppmv 1 08/31/2004 14 14 <br /> . Total xylenes NO 1 0 mg1m3 NO 0 23 ppmv 1 08/31/2004 14 14 <br /> Methyl tert butyl ether NO 0 50 mglm3 NO 014 ppmv 1 08/31/2004 1414 <br /> Surrogate(s) <br /> 12-Dichloroethane-d4 1115 72-128 % % 1 08/31/2004 14 14 <br /> Toluene-d8 96 7 80-113 % % 1 08/31/2004 14 14 <br /> Severn Trent Laboratories, Inc 09/15/2004 15 16 <br /> STL San Francisco`1220 Quarry Lane Pleasanton CA 94566 <br /> A pan d Severn pent P1n Tel 925 484 1919 Fax 925 484 1096'www stl-inc com'CA DHS FLAP#2496 Page 3 of 7 <br />