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a Y <br /> . Submission 2005-02-0795 <br /> STLGas/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 02124120051510 <br /> Conoco Phillips#5886 <br /> Site 2701 W March Ln , Stockton <br /> Batch QC Report <br /> Prep(s) 5030E Test(s) 82608 <br /> Method Blank Water QC Batch #2005!03!07-2A 64 <br /> MB 2005103107-2A 64-058 Date Extracted 03/07/2005 18 58 <br /> Compound Conc RL Unit Analyzed Flag <br /> tert-Butyl alcohol (TBA) NO 50 ug/L 03/07/2005 18 58 <br /> Methyl tert-butyl ether(MTBE) ND 05 ug/L 03/07/2005 18 58 <br /> Di-isopropyl Ether(DIPE) ND 05 ug/L 03/07/2005 18 58 <br /> Ethyl tert-butyl ether(ETBE) ND 05 ug/L 03/07/2005 18 58 <br /> tert-Amyl methyl ether(TAME) ND 05 ug/L 03/07/2005 18 58 <br /> 1,2-DCA NO 05 ug/L 03/07/2005 18 58 <br /> EDB NO 05 ug/L 03/07/2005 18 58 <br /> Benzene ND 0 5 ug/L 03/07/2005 18 58 <br /> Toluene ND 0 5 ug/L 03/07/2005 18 58 <br /> Ethylbenzene ND 0 5 ug/L 03/07/2005 18 58 <br /> Total xylenes ND 1 0 ug/L 03/07/2005 18 58 <br /> Ethanol NO 50 ug/L 03/07/2005 18 58 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 1074 73-130 % 03/07/2005 18 58 <br /> Tofuene-d8 1950 81-114 % 03/07/2005 18 58 <br /> Severn Trent Laboratories, Inc 03/11/2005 15 26 <br /> STL San Francisco-1220 Quarry Lane Pleasanton CA 94566 <br /> A part of Savam Tree[Pk Tel 925 484 1919 Fax 925 484 1 096'www stknc com'CA DHS FLAP#2496 Page 22 of 31 <br />