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i <br /> STLSubmission#: 2003-07-0894 <br /> Fuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> ' 1120 Hollywood Ave, Suite 3 <br /> l: <br /> Oakland, CA 946021459 <br /> Phone: (510) 336-1772 Fax: (6 10) 336-9119 <br /> Project: 9902,013 Received: 07/30/2003 13:28 <br /> C. Navarre <br /> ff <br /> Batch,QC Report <br /> Prep(s): 50308 Tast(s): 82808 <br /> Method Blank Water QC Batch#2003/08/07-1 B.62 . <br /> MB: 2003/08/07-1 8.62-048Date Extracted:`08107/200310:48 <br /> E _ Compound Conc. RL Unit Analyzed Flag <br /> Gasoline ND 50 ug/L 08/07/2003 90:48 <br /> Benzene ND 0.5 ug/L 081071200310:48 <br /> i' Toluene ND 0.5 ug/L 08/07/2003 90:48 <br /> Ethylbenzene ND 0.5 ug/L 081071200310:48 <br /> Total xylenes ND 1.0 ug/L 08/07/2003 10:48 <br /> tert-Butyl alcohol (TBA) ND 5.0 ug/L 08/07/2003 10:48 <br /> Methyl tert-butyl ether(MTBE) ND 0.5 ug/L 08/07/2003 10:48 <br /> Di-isopropyl Ether(DIPE) ND 1.0 ug/L 08/07/2003 10:48 <br /> Ethyl tent-butyl ether(ETBE) ND 0,5 ug/l- 08/07/2003 10:48 <br /> tert-Amyl methyl ether(TAME) ND 0.5 ug/L 08/07/2003 10:48 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 89.1 76-114 % 081071200310:48 <br /> Toluene-d8 98,6 88-110 % 08/07/2003 10:48 <br /> 'a <br /> I,. <br /> Severn Trent Laboratories, Inc. 0810712003 14:57 <br /> I STL San Francisco*1220 Quarry Lane,Pleasanton,CA 94566 <br /> A parl of S—m Tra lPlc Tel 925 484 1919 Fax 925 484 1096*www,stl-lnc.com*CA DHS ELAP#2496 Page 9 of 13 <br /> l._1 <br />