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STI L Submission 2005-02-0138 <br /> Fuel Oxygenates by 8260B <br /> Aqua Science Engineers, Inc <br /> Attn Robert Kitay <br /> 208 West EI Pintado Road <br /> Danville, CA 94526 <br /> Phone (925) 820-9391 Fax (925) 837-4853 <br /> Project 3254 Received 02/04/2005 17 20 <br /> Singh <br /> Site 574 West Grant Line Rd , Tracy, CA <br /> Prep(s) 5030B Test(s) 8260B <br /> Sample ID MW-4 Lab ID 2005-02-0138-4 <br /> Sampled 01/31/2005 12 10 Extracted 2/11/2005 15 20 <br /> Matrix Water QC Batch# 2005/02/11-0164 <br /> Compound Conc RL Unit Dilution Analyzed Flag <br /> Gasoline ND 50 ug/L 1 00 02/11/2005 15 20 <br /> tert-Butyl alcohol (TBA) ND 50 ug1L 1 00 02/11/2005 15 20 <br /> Methyl tert-butyl ether(MTBE) 50 050 ug/L 1 00 02/11/2005 1520 <br /> • Di-isopropyl Ether(DIPS) NO 1 0 ug/L 1 00 02/11/2005 1520 <br /> Ethyl tert-butyl ether(ETBE) NO 050 ug/L 1 00 02/11/2005 1520 <br /> tert-Amyl methyl ether(TAME) NO 050 uglL 1 00 02/11/2005 15 20 <br /> Benzene ND 050 ug/L 1 00 02/11/2005 15 20 <br /> Toluene NO 050 ug/L 1 00 02/11/2005 15 20 <br /> Ethylbenzene ND 0 50 ug/L 1 00 02/11/2005 1520 <br /> Total xylenes ND 1 0 ug/L 1 00 02/11/2005 15 20 <br /> Surrogate(s) <br /> 1,2-Dichloroethane-d4 1047 73-130 % 1 00 02/11/2005 1520 <br /> Toluene-d8 1080 81-114 % 1 00 02/11/2005 15201 <br /> Severn Trent Laboratories, Inc 02/11/2005 16 04 <br /> STL San Francisco*1220 Quarry Lane Pleasanton CA 94566 <br /> A Pah of Severn Trent P,c Tel 925 484 1919 Fax 925 484 1096'www stl-inc com•CA DHS ELAP*2496 Page 5 of 14 <br />