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t <br /> Submission#: 2003-04-0389 <br /> S T L <br /> Fuel Oxygenates by 8260B <br /> San Joaquin Company, Inc. <br /> Attn.: Dai Watkins <br /> 1120 Hollywood Ave, Suite 3 <br /> .� Oakland, CA 94602-1459 <br /> I _ Phone: (510)336-1772 Fax: (510) 336-9119 <br /> Project: 9902,013 Received: 04/15/2003 17:19 <br /> C. Navarra <br /> Batch QC Report <br /> Prep(s): 50308 Test(s): 8260B <br /> Method Blank Water QC Batch#2003104123-2a.62 <br /> MB:2003/04.123-2a.62-016. Date Extracted'. 04/23/2003 21:16 <br /> Compound Conc. RL Unit Analyzed Flag <br /> s` I Gasoline ND 50 ug/L 04/23/2003 21:16 <br /> 1 `= Benzene ND 0.5 ug/L 04/23/2003 21:16 <br /> Toluene NO 0.5 ug/L 04/23/2003 21:16 <br /> Ethylbenzene ND 0.5 ug/L 04/23/2003 21:16 <br /> Total xylenes NO 1.0 ug/L 04/23/2003 21:16 <br /> tert-Butyl alcohol (TBA) ND 5.0 ug/L 04/23/2003 21:16 <br /> Methyl tert-butyl ether(MTBE) ND 0.5 ug/L 04/23/2003 21:16 <br /> DI-isopropyl Ether(DIPE) NO 1.0 ug/L 04/23/2003 21:16 <br /> Ethyl tert-butyl ether(ETBE) NO 0.5 ug/L 04/23/2003 21:16 <br /> tert-Amyl methyl ether(TAME) NO 0.5 ug/L 04/23/2003 21:16 <br /> Surrogates(s) <br /> 1,2-Dichloroethane-d4 105.6 76-114 % 04/23/2003 21:16 <br /> ` Toluene-d8 101.7 88-110 % 04/23/2003 21:16 <br /> I <br /> f <br /> r <br /> Severn Trent Laboratories, Inc. 05!061200316:18 <br /> STL San Francisco'1220 quarry Lane,Pleasanton,CA 94566 <br /> Apart of sewn Trani Plc Tel 925 484 1919 Fax 925 484 1096 0 www,stl-lnc.com'CA DHS ELAP#2496 Page 17 of 28 i <br /> I <br /> =i <br />