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t <br /> ST L Submission#: 2004-03-0004 <br /> 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: 02/27/2004 18:53 <br /> Conoco Phillips# 11195 <br /> Site: 16500 South Interstate 5, Lathrop <br /> Batch QC Report <br /> Prep(s): 50308 Test(s): 8260FAB <br /> Method Blank Water QC Batch#2004/03109-1 B.66 <br /> MB: 2004103109-18.66-052 Date Extracted: 03/09/2004 10:52 <br /> Compound Conc. RL Unit Analyzed Flag <br /> Gasoline ND 50 ug/L 031091200410:52 <br /> tert-Butyl alcohol (TBA) ND 100 ug/L 03/09/2004 10:52 <br /> Methyl tert-butyl ether(MTBE) ND 2.0 ug/t_ 03/09/2004 10:52 <br /> Di-isopropyl Ether(DIPE) ND 2.0 ug/L 03/09/2004 10:52 ti <br /> Ethyl tert-butyl ether(ETBE) ND 2.0 ug/L 03/09/2004 10:52 <br /> tert-Amyl methyl ether(TAME) ND 2.0 ug/L 03/09/2004 10:52 <br /> 1,2-DCA ND 2.0 ug/L 03/09/2004 10:52 <br /> EDB ND 2.0 ug/L 031091200410:52 <br /> Benzene ND 0.5 ug/L 031091200410:52 <br /> Toluene ND 0.5 ug/L 031091200410:52 <br /> Ethylbenzene ND 0.5 ug/L 031091200410:52 <br /> Total xylenes ND 1.0 ug/L 03/09/2004 10:52 <br /> Ethanol ND 500 ug/L 03/091200410:52 <br /> Surrogates(s) <br /> 1,2-Dichioroethane-d4 104.8 76-114 % 031091200410:52 <br /> Toluene-d8 101.6 88-110 % 031091200410:52 <br /> :r <br /> Severn Trent Laboratories, Inc. 03/11/2004 16:06 <br /> STL San Francisco'1220 Quarry Lane,Pleasanton,CA 94566 <br /> A part al a-Twt Ple Tel 925 484 1919 Fax 925 484 1096"www,stl-inc.com"CA DHS ELAP*2496 Page 23 of 29 <br />