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ST L Submission#: 2004-05-0855 <br /> i"7 Gas/BTEX 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: 05/24/2004 11:50 <br /> Conoco Phillips# 11195 <br /> Site: 16500 South Interstate 5 Lathrop <br /> _ Batch QC Report <br /> Prep(s): 50306 Test(s): 8260FAB <br /> Method Blank Water QC Batch#2004106/04-01.64 <br /> MB: 2004106104-01.64-050 Date Extracted: 06/04/2004 07:50 <br /> Compound Conc. RL Unit Analyzed Flag <br /> Gasoline ND 50 ug/L 06/04/2004 07:50 <br /> Benzene ND 0.5 ug/L 06/04/2004 07:50 <br /> Toluene ND 0.5 ug/L 06/04/2004 07:50 <br /> Ethylbenzene ND 0.5 ug/L 06/04/2004 07:50 <br /> = 1 Total xylenes ND 1.0 ug/L 0610412004 07:50 <br /> tert-Butyl alcohol (TBA) ND 5.0 ug/L 06/04/2004 07:50 <br /> Methyl tert-butyl ether(MTBE) ND 0.5 ug/L 06/04/2004 07:50 <br /> Di-isopropyl Ether(DIPE) ND 1.0 ug/L 06/04/2004 07:50 <br /> Ethyl tert-butyl ether(ETBE) ND 0.5 ug/L 06/04/2004 07:50 <br /> tert-Amyl methyl ether(TAME) ND 0.5 ug/L 06/04/2004 07:50 <br /> 1,2-DCA ND 0.5 ug/L 06/04/2004 07:50 <br /> EDB ND 0.5 ug/L 06/04/2004 07:50 <br /> Ethanol ND 50 ug/L 06/04/2004 07:50 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 102.4 72-128 % 06/04/2004 07:50 <br /> Toluene-d8 101.8 80-113 % 06/04/2004 07:50 <br /> u Severn Trent Laboratories, Inc. 06107/200413:05 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pan cf Severn Trent Plc Tel 925 484 1919 Fax 925 484 1096'www.stl-[nc.com.CA DHS ELAP#2496 Page 24 of 31 <br />