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Ae <br /> STLSubmission 2005-05-0037 <br /> • Fuel Oxygenates by 82608 , <br /> Aqua Science Engineers, Inc � <br /> q 9 , <br /> ' Attn Dave Alien <br /> i <br /> 208 West EI Pintado Road <br /> Danville, CA 94526 <br />! ' Phone (925) 820-9391 Fax (925) 837-4853 <br /> Project 3254 Received 05/02/2005 15 50 <br /> Singh <br /> Site Tracy, CA <br /> ' Prep(s) 50308 Test(s) 8260B <br /> Sample ID MW-2 Lab ID 2005-05-0037-2 <br /> Sampled 04/29/2005 13 25 Extracted 5/12/2005 12 27 <br /> 5/13/2005 09 25 <br /> I <br /> Matrix Water QC Batch# 2005/05112-01 64 <br /> 2005105/13-01 64 <br />! pH <2 <br /> Compound Conc RL Unit Dilution Analyzed Flag <br /> Gasoline 410 50 ug/L 1 00 05/12/2005 12 27 <br /> tert-Butyl alcohol (TBA) 91 50 ug/L 1 00 05/12/2005 12 27 <br /> Methyl tert-butyl ether(MTBE) 460 25 ug/L 500 05/13/2005 09 25 <br /> Di-isopropyl Ether(DIPS) ND 1 0 ug/L 1 00 05/12/2005 12 27 <br /> Ethyl tert-butyl ether(ETBE) ND 050 ug/L 1 00 05/12/2005 1227 <br /> tert-Amyl methyl ether(TAME) 26 050 ug/L 1 00 05/12/2005 12 27 <br /> Benzene 22 060 ug/L 1 00 05/12/2005 1227 <br /> ' Toluene ND 0 50 ug/L 1 00 05/12/2005 12 27 <br /> Ethylbenzene 068 050 ug/L 1 00 05/12/2005 1227 <br /> Total xylenes ND 1 0 ug/L 1 00 05/12/2005 12 27 <br /> Surrogate(s) <br /> t 1,2-Dichloroethane-d4 106 4 73-130 % 1 00 05/12/2005 1227 <br /> 1,2-Dichloroethane-d4 1259 73-130 % 500 05/13/2005 09 25 <br /> Toluene-d8 990 81-114 % 1 00 05/12/2005 12 27 <br /> Toluene-d8 101 8 81-114 % 5 00 05/13/2005 09 25 <br /> 1 <br /> Severn Trent Laboratories, Inc 05/18/2005 16 51 <br /> STL San Francisco*1220 Quarry Lane, Pleasanton CA 94566 <br /> A part of Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096*www stl-inr,corn*CA DHS ELAP*2496 Page 3 of 12 <br />