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STLSubmission# 2004-05-0592 <br /> . <br /> Gas/BTEX Fuel Oxygenates by 8260B <br /> TRC Alton Geoscience <br /> Attn Anlu Farfan <br /> 21 Technology Drive <br /> Irvine, CA 92718 <br /> Phone (949) 341-7440 Fax (949) 753-0111 <br /> Project 41050001 FA20 Received 05/17/2004 16 46 <br /> Conoco Phillips#08671 <br /> Site 8606 Thornton Rd , Stockton <br /> Batch QC Report <br /> Prep(s) 50306 Test(s) 8260FAB <br /> Method Blank Water QC Batch #2004105127-2B 64 <br /> MB 2004105127-28 64-030 Date Extracted 05/2712004 19 30 <br /> Compound Conc RL Unit Analyzed Flag <br /> Gasoline NO 50 ug/L 05/27/2004 19 30 <br /> Gasoline ND 50 ug/L 05/27/2004 19 30 <br /> tert-Butyl alcohol (TBA) NO 50 ug/L 05/27/2004 19 30 <br /> Methyl tert-butyl ether(MTBE) NO 05 ug/L 05/27/2004 19 30 <br /> Di-isopropyl Ether(RIPE) ND 10 ug/L 05/27/2004 19 30 <br /> Ethyl tent-butyl ether(ETBE) NO 05 ug/L 05/27/2004 1930 <br /> tert-Amyl methyl ether(TAME) NO 05 ug/L 05/27/2004 19 30 <br /> 1,2-DCA ND 05 ug/L 05/27/2004 19 30 <br /> EDB ND 05 ug/L 05/27/2004 19 30 <br /> Benzene ND 0 5 ug/L 05/27/2004 19 30 <br /> Toluene ND 0 5 ug/L 05/27/2004 19 30 <br /> Ethylbenzene NO 0 5 ug/L 05/27/2004 19 30 <br /> Total xylenes ND 1 0 ug/L 05/27/2004 19 30 <br /> Ethanol NO 50 ug/L 05/27/2004 19 30 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 1026 72-128 % 05/2712004 19 30 <br /> Toluene-d8 960 80-113 % 05/27/2004 19 30 <br /> Severn Trent Laboratories, Inc 05/2812004 1518 <br /> STL San Francisco'1220 Quarry Lane Pleasanton CA 94565 <br /> Apart of S.—n hens Plc Tel 925 484 1919 Fax 925 484 1096"www stl-inc corn'CA OHS ELAP#2496 Page 12 of 15 <br />