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TABLE 2 <br /> Groundwater Analytical Results for Oxygenates <br /> ARCO Service Station No 2186 <br /> 3212 North California Street, Stockton, California <br /> Well <br /> Sample TBA MTBE DIPE ETBE TAME <br /> Number Date ug1L µgT µ 1L µg1L µg1L <br /> MW4 11/20/97 190 13 <2 <2 <2 <br /> MW-4 02/17/98 180 25 <2 <2 <2 <br /> MW-4 06/24/98 <200 181 <2 <2 <2 <br /> MW-4 09/21/98 <200 <2 <2 <2 <2 <br /> MW-4 12/14/98 <200 241 <2 <2 <2 <br /> MW-4 03/31/99 <200 786 <2 <2 <2 <br /> MW-4 06/11/99 <200 346 <2 <2 <2 <br /> MW-4 09/10/99 <1,000 1,060 <10 <10 <10 <br /> MW-4 12/03/99 <400 760 <4 <4 656 <br /> MW-4 04/03/00 <200 106 <2 <2 <2 <br /> MW-4 06/22/00 <200 2,070 <2 <2 157 <br /> MW-4 09/27/00 499 6,590 <2 302 532 <br /> MW-4 12/20/00 <200 1,150 ' Z <2 <2 102 <br /> VW-3 11/20/97 <100 <2 <2 <2 <2 <br /> VW-3 02/17/98 NA NA NA NA NA <br /> VW-3 06/24/98 <200 <2 <2 <2 <2 <br /> VW-3 09/21/98 310 235 <2 <2 <2 <br /> VW-3 12/14/98 <200 432 <2 <2 5 11 <br /> VW-3 03/31/99 <200 <2 <2 <2 <2 <br /> VW-3 06/11/99 <200 548 <2 <2 <2 <br /> VW-3 09/10/99 <1,000 1,500 <10 <10 123 <br /> VW-3 12/03/99 <200 262 <2 <2 208 <br /> VW-3 04/03/00 <200 252 <2 <2 <2 <br /> VW-3 06/22/00 <200 3,180 <2 <2 23 <br /> VW-3 09/27/00 NS NS NS NS NS <br /> VW-3A 12/20/00 <200 592 <2 <2 <2 <br /> Oxygenates analyzed using USEPA Method 8260 TBA=Tertiary butyl alcohol <br /> µg1L=Analytical results in micrograms per Her MTBE=Methyl tertiary butyl ether <br /> =Below detection limit for analytical methods used DIPE=Di-isopropyl ether <br /> NA=Not analyzed ETBE=Ethyl tertiary butyl ether <br /> NS=Not sampled TAME-Tertiary amyl methyl ether <br /> This sample was analyzed outside of the EPA recommended holding time <br /> The reported value exceeds the calibration curve,but not the linear range <br /> s <br /> C 1ARCO\21861QTRL.Y1200012186 QMR Data XLS Delta <br /> 2 of 2 2/28101 <br />