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Table 2 <br /> Groundwater Analytical Results for Oxygenates <br /> (USEPA Method 8260) <br /> r ARCO Service Station No 2130 <br /> 7906 North EI Dorado Street, Stockton, California <br /> Well <br /> Sample THA MTBE DIPE ETBE TAME <br /> Number Date pg1L 11 µ IL 1L <br /> MW-7 11/19/97 NA NA NA NA NA <br /> MW-7 03/05/98 <100 <2 <2 <2 <2 <br /> MW-7 06/26/98 <100 <2 <2 <2 <2 <br /> MW-7 09/01/98 <100 <2 <2 <2 <2 <br /> MW-7 12/02/98 <200 <2 <2 <2 <2 <br /> MW-7 03/31/99 <200 <2 <2 <2 <2 <br /> MW-7 06/04/99 <200 <2 <2 <2 <2 <br /> I <br /> MW-7 09/02/99 <200 <2 <2 <2 <2 <br /> MW-7 11/29/99 <200 <2 <2 <2 <2 <br /> MW-7 03/16/00 <200 <2 <2 <2 <2 <br /> MW-7 06/26/00 <100 <2 <2 <2 <2 <br /> MW-7 09/28/00 <200 <2 <2 <2 <2 j <br /> MW-10 11/19/97 NA NA NA NA NA <br /> MW-10 03/05/98 <250* <5* <5* <5* <5* <br /> MW-10 06/26/98 <100 <2 <2 <2 <2 <br /> MW-10 09/01/98 <100 <2 <2 <2 <2 <br /> MW-10 12/02/98 <200 <2 <2 <2 <2 <br /> MW-10 03/31/99 <200 <2 <2 <2 <2 <br /> MW-10 66/04/99 <200 <2 <2 <2 <2 <br /> MW-10 09/02/99 <200 <2 <2 <2 <2 <br /> MW-10 11/29/99 <200 <2 <2 <2 <2 <br /> MW-10 03/16/00 <200 <2 <2 <2 <2 <br /> MW-10 06/26/00 <100 <2 <2 <2 <2 <br /> MW-10 09/28/00 <200 <2 <2 <2 <2 <br /> USEPA=U S Environmental Protection Agency <br /> BA=Tertiary butyl alcohol <br /> MTBE=Methyl tertiary butyl ether <=Below detection limit for analytical methods used <br /> D(PE=Di-isopropyl ether NA=Not analyzed <br /> ETBE=Ethyl tertiary butyl ether *Reporting limits raised due to matrix effects and/or other factors <br /> AME=Tertiary amyl methyl ether <br /> µg%=micrograms per liter <br /> i <br /> PAVILION1MyDocuments\ARCO\21301QTRLY1200012130Q300 Delta <br /> Page 3 of 3 11/22/00 <br />