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Submission: 2004-07-0631 <br /> STL <br /> GasBTEX Fuel Oxygenates by 82608 <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: 07120/2004 17:03 <br /> Conoco Phillips#01205 <br /> Site: 16470 Cambridge St. Lathrop <br /> Batch QC Report <br /> Prep(s): 50306 Test(s): 8260FAB <br /> Method Blank Water QC Batch #2004107130-2A.64 <br /> MB: 2004/07130-2A.64-047 Date Extracted: 07/30/2004 20:47 <br /> Compound Conc. RL Unit Analyzed Flag <br /> Gasoline ND 50 ug/L 07/30/2004 20:47 <br /> Cert-Butyl alcohol (TBA) NO 5.0 ug/L 07/30/2004 20:47 <br /> Methyl tert-butyl ether(MTBE) ND 0.5 ug/L 07/30/2004 20:47 <br /> Di-isopropyl Ether(DIPS) NO 1.0 ug/L 07/30/2004 20:47 <br /> Ethyl tert-butyl ether(ETRE) ND 0.5 ug/L 07/30/2004 20:47 <br /> tort-Amyl methyl ether(TAME) ND 0.5 ug/L 07/30/2004 20:47 <br /> 1,2-DCA ND 0.5 ug/L 07/30/2004 20:47 <br /> EDB NO 0.5 ug/L 07/30/2004 20:47 <br /> Benzene ND 0.5 ug/L 07/30/2004 20:47 <br /> Toluene NO 0.5 ug/L 07/30/2004 20:47 <br /> Ethylbenzene ND 0.5 ug1L 07/30/2004 20:47 <br /> Total xylenes NO 1.0 ug/L 07/30/2004 20:47 <br /> Ethanol ND 50 ug/L 07/30/2004 20:47 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 105.4 72-128 % 07/30/2004 20:47 <br /> Toluene-d8 104.0 80-113 % 07/30/2004 20:47 <br /> Severn Trent Laboratories, Inc. 08/021200416:00 <br /> STL San Francisco`1220 Quarry Lane,Pleasanton,CA 94566 <br /> A pan Of t-t Pic Tel 925 484 1919 Fax 925 484 1096'www.stl-inc.corn'CA DH5 ELAP#t 2496 Page 18 of 23 <br />