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tr TABLE 2 FUEL OXYGENATES ANALYTICAL DATA (U S EPA METHOD$260) Former ARCO Service Station No 2168 • 441 Charter Way Stockton,California Well Sample TBA MtBE DIPE ETBE TAME 1,2-DCA Number Date ppb ppb ppb ppb ppb ppb 5/17/2001 <1,000[2] <10[2] <10[2] <10[2] <10[2] <10[21 8/16/2001 <200 <2 <2 <2 <2 <2 12/6/2001 <50[2] <5 0[2] <5 0[21 <5 0[21 <5 0[21 <5 0[21 2/14/2002 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 8/22/2002 <5 <0 5 <0 5 <0 5 <0 5 <0 5 MW-8 8/30/2000 <200 <2 <2 <2 <2 338 11/21/2000 <200 <2 <2 <2 <2 218 2/15/2001 <200 <2 <2 <2 <2 346 5/17/2001 <200 <2 <2 <2 <2 264 8/16/2001 <200 <2 <2 <2 <2 32 12/6/2001 <5 0 <0 50 <0 50 <0 50 <0 50 36 2/1412002 <5 0 <0 50 <0 50 <0 50 <0 50 052 8/22£2002 65 <0 5 <0 5 <0 5 <0 5 18 MW-813 8/30/2000 <200 <2 <2 <2 <2 380 11/21/2000 <200 <2 <2 <2 <2 382 2/15/2001 <200 <2 <2 <2 <2 436 5/17!2001 <200 <2 <2 <2 C2 258 8/16/2001 <200 <2 <2 <2 <2 <2 12/6/2001 <5 0 <0 50 <0 50 <0 50 <0 50 28 2/14/2002 <5 0 1 1 <0 50 <0 50 <0 50 30 8/22/2002 <5 <0 5 <0 5 <0 5 <0 5 14 MW-8C 8/30/2000 <200 <2 <2 <2 <2 <2 11/2112000 <200 <2 <2 <2 <2 <2 2/15/2001 <200 <2 Q <2 <2 <2 5/17/2001 <200 Q Q <2 <2 <2 8/16/2001 <200 <2 <2 <2 C2 <2 12/6/2001 <5 0 <0 50 <0 50 <0 50 <0 50 <0 50 2/14/2002 <5 0 1 3 <0 50 <0 50 <0 50 <0 50 8/22/2002 <5 062 <05 <0 5 <0 5 <0 5 µg/L=Analytical results to nucrograms per liter TBA=Tertiary butyl alcohol [I]This sample was analyzed outside of EPA recommended hold time M1BE=Methyl tert-butyl ether DIPE=Di-isopropyl ether [21The reporting limit(s)for this sample have been raised due to £TBE=Ethyl tertiary butyl ether high levels of non-target mterferents TAME=Tertiary amyl methyl ether 1 2 DCA=l 2-achloroethane <=Below detection limn for analytical methods used KAS BP ARM0216W_QM 02lrabte 1 z 3 xds 4 of 4