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� q Submission 2005-07-0294 <br /> STL <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience- Irvine <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 07/12/2005 18 00 <br /> Conoco Phillips#4409 <br /> Site 1502 N El Dorado St Stockton <br /> { Batch QC Report <br /> I Prep(s) 50308 _ Test(s) 82608 <br /> Method Blank _ Water ' QC Batch#2005107123-2A 62 , <br /> MB 2005107123-2A 62-030 Date Extracted 07/23/2005 18 30 <br /> Compound Conc RL Unit Analyzed Flag <br /> tert-Butyl alcohol (TBA) ND 50 ug/L 07/23/2005 18 30 <br /> Methyl tent-butyl ether(MTBE) ND 05 ug/L 07/23/2005 18 30 <br /> Di-isopropyl Ether(DIPS) ND 05 uglL 07/23/2005 18 30 <br /> Ethyl tert-butyl ether(ETRE) ND 05 ug/L 07/23/2005 18 30 <br /> tert-Amyl methyl ether(TAME) ND 05 ug/L 07/23/2005 18 30 <br /> 1,2-DCA ND 05 ug/L 07/23/2005 18 30 <br /> EDB ND 05 ug/L 07/23/2005 18 30 <br /> Benzene ND 0 5 ug/L 07/23/2005 18 30 <br /> Toluene ND 0 5 ug/L 07/23/2005 18 30 <br /> Ethylbenzene ND 0 5 ug/L 07/23/2005 18 30 <br /> Total xylenes ND 1 0 ug/L 07/23/2005 18 30 <br /> Ethanol ND 50 ug/L 07/23/2005 18 30 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 976 73-130 % 07/23/2005 18 30 <br /> Toluene-d8 908 81-114 % 07/23/2005 18 30 <br /> Severn Trent Laboratories, Inc 07/28/2005 17 27 <br /> STL San Francisco"1220 Quarry Lane Pleasanton CA 94566 <br /> A pari of Severn Trent Pk Tel 925 484 1919 Fax 925 484 1096'www stl-inc com"CA OHS ELAP#2496 Page 21 of 41 <br />