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®® <br /> STL submission#: 2003-11-0887 <br /> Gas/BTFX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <br /> Attn.: Anju Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone: (949) 341-7440-Fax: (949) 753-0111 <br /> Project: 41050001 FA20 Received: 11/25/2003 15:00 <br /> Conoco Phillips#11195 <br /> Site: 16500 South Interstate 5, Lathrop <br /> Batch QC Report <br /> Prep(s): 5030E Test(s):.8260B <br /> MethodBlank. Water QC Bat-ch#2003112104-01.69 <br /> MB: 2003112104-01.69-049 Date Extracted: 12/0412003 09:49 <br /> Compound Conc, RL Unit Analyzed Flag <br /> Gasoline ND 50 uglL 12/04/2003 09:49 <br /> Benzene ND 0.5 ug/L 12/04/2003 09:49 <br /> Toluene ND 0.5 uglL 12/04/2003 09:49 <br /> Ethylbenzene ND 0.5 uglL 12/04/2003 09:49 <br /> Total xylenes ND 1.0 uglL 12/04/2003 09:49 <br /> tert-Butyl alcohol (TBA) ND 100 ug/L 12/04/2003 09:49 <br /> Methyl tert-butyl ether(MTBE) ND 2.0 ug/L 12/04/2003 09:49 <br /> Di-isopropyl Ether(DIPE) ND 2.0 ug/L 12/04/2003 09:49 <br /> Ethyl tert-butyl ether(ETBE) ND 2.0 uglL 12/04/2003 09:49 <br /> tert-Amyl methyl ether(TAME) ND 2.0 uglL 12/04/2003 09:49 <br /> 1,2-DCA ND 2.0 uglL 12/04/2003 09:49 <br /> EDB ND 2.0 uglL 12/04/2003 09:49 <br /> Ethanol ND 500 uglL 12/04/2003 09:49 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 81.0 76-114 % 12/04/2003 09:49 <br /> Toluene-d8 93.6 88-110 % 12/04/2003 09:49 <br /> l Severn Trent Laboratories, Inc. 12111/2003 1 7:29 <br /> STL San Francisco"1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part of Sevem Teem Plo Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.com'CA DHS FLAP#2496 Page 23 of 30 <br />