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Table 2 <br /> f <br /> Fuel Oxygenates Analytical Data <br /> ARCO Service Station No 760 <br /> 225 S Cherokee, Lodi, CA <br /> Well Date Ethanol TBA MtBE DIPS EtBE TAME 1,2-DCA EDB <br /> Number Sampled WL) (pg1L) (091L) (pg/L) (pglL) (pg/L) (pg1L) (pg/L) Comments <br /> MW-1 10!312002 -- <20 091 <0 5 <0 5 <0 5 17 <05 <br /> 01/30/2003 <40 <20 057 <0 50 <0 50 <0 50 10 <0 50 <br /> 04/1012003 <100 <20 16 <0 50 <0 50 <0 50 94 <0 50 <br /> 07/24/2003 <100 <20 076 <1 0 <1 0 <1 0 13 <0 50 <br /> 10/17/2003 <100 <20 055 <1 0 <1 0 <1 0 50 <0 50 <br /> 01/21/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 1 7 <0 50 <br /> 04/26/2004 <100 <20 <0 50 <1 0 <1 0 <1 0 36 <0 5o <br /> MW-2 10/3/2002 -- <20 37 <0 5 <0 5 <05 26 <0 5 <br /> 01/30/2003 <40 UJ <20 UJ <0 50 UJ <0 50 UJ <0 50 UJ <0 50 UJ 1 7 J <0 50 UJ <br /> 04!10!2003 <100 <20 056 <0 50 <0 50 <0 50 076 <0 50 <br /> 07/24/2003 <200 <40 63 <2 0 <2 0 <2 0 20 <1 0 <br /> 10/1712003 <100 <20 30 <1 0 <1 0 <1 0 10 <0 50 <br /> 01/21/2004 <100 <20 056 <1 0 <1 0 <1 0 1 9 <0 50 <br /> 04/26/2004 <500 <100 48 <5 0 <50 <5 0 56 <2 5 <br /> MW-3 1013!2002 -- <20 <05 <0 5 <0 5 <0 5 62 <0 5 <br /> 01/30/2003 <40 <20 <0 50 <0 50 <0 50 <0 50 61 <0 50 <br /> 04/10/2003 <100 <20 068 <0 50 <0 50 <0 50 10 <0 50 <br /> 07/24/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 82 <0 50 I <br /> 10/17/2003 <100 <20 <0 50 <1 0 <1 0 <1 0 1 9j <0 50 <br /> 01/21/2004 <100 1 <20 <0 50 <1 0 <1 0 <1 0 30 <0 50 <br /> 0412612004 <500 1 <100 <2 5 <50 <5 0 <5 0 42 <2 5 <br /> Analysis performed using EPA Method 8260B <br /> TBA=Tert-butyl alcohol <br /> MtBE=Methyl tert-butyl ether <br /> DIPE=Di-isopropyl ether <br /> EtBE=Ethyi tert-butyl ether <br /> TAME=Tert-amyl methyl ether <br /> 1,2-DCA=1,2-Dichloroethane <br /> EDB= 1,2-Dibromoethane <br /> ug/L=micrograms per liter <br /> <=below given laboratory detection limit <br /> --=not measured or analyzed <br /> Data Qualifier Definitions <br /> U=The analyte was analyzed for but was not detected above the sample reporting limit <br /> J=The analyte was positively identified,the associated numerical value is the approximate concentration of the analyte in the sample <br /> N=The analysis indicates the presence of an analyte for which there is presumptive evidence to make a tentative identification <br /> Report Date May 25,2004 Page i of 2 <br /> II <br /> I <br />