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ir) <br /> Table 2 <br /> Groundwater Analytical Results for Oxygenates <br /> Former ARCO Service Station No 2168 <br /> 441 Charter Way, Stockton, California <br /> Well <br /> Sample <br /> Number Date Tertiary butanol MTBE DIPE ETBE TAME <br /> MW-5 11/17/97 NA NA NA NA NA <br /> MW-5 05/21/98 <10,000 <100 <100 <100 <100 <br /> MW-5 08/12/98 <2,000 <20 <20 <20 <20 <br /> MW-5 11/09/98 <200 <2 <2 <2 <2 <br /> MW-5 02/17/99 <200 <2 <2 <2 <2 <br /> MW-5 05/25/99 <200 <2 <2 <2 <2 <br /> MW-5 08/18/99 <200 <2 <2 <2 <2 <br /> MW-5 12/17/99 <200 <2 <2 <2 <2 <br /> MW-5 02/22/00 <200 <2 <2 <2 <2 <br /> MW-6 (41) 11/17/97 <3,300 <67 <67 <67 <67 <br /> MW-6 05/22/98 <10,000 <100 <100 <100 <100 <br /> MW-6 08/12/98 <20,000 <200 <200 <200 <200 <br /> MW-6 11/09/98 <200 <2 <2 <2 <2 <br /> MW-6 02/17/99 <200 <2 882 <2 <2 <br /> MW-6 05/25/99 <200 <2 <2 <2 <2 <br /> MW-6 08/18/99 <200 478 <2 <2 <2 <br /> MW-6 12/17/99 <200 <2 <2 <2 <2 <br /> MW-6 02/22/00 <200 <2 <2 <2 <2 <br /> MW-7 11/17/97 NA NA NA NA NA <br /> MW-7 05/22/98 <10,000 <100 <100 <100 <100 <br /> MW-7 08/12/98 <200 <2 <2 <2 <2 <br /> MW-7 11/09/98 <200 <2 <2 <2 <2 <br /> MW-7 02/17/99 <200 <2 <2 <2 <2 <br /> MW-7 05/25/99 <200 <2 <2 <2 <2 <br /> MW-7 08/18/99 <200 <2 <2 <2 <2 <br /> MW-7 12/17/99 <200 <2 <2 <2 <2 <br /> MW-7 02/22/00 <200 <2 <2 <2 <2 <br /> Oxygenates were analyzed using USEPA Method 8260 <br /> Analytical results in parts per billion <br /> MTBE=Methyl tertiary butyl ether <br /> IPE=Di-isopropyl ether <br /> BE=Ethyl tertiary butyl ether <br /> AME=Tertiary amyl methyl ether <br /> <=Below detection limit for analytical methods used <br /> CP1DataWetttvelARC012168\QTRLY12168g100 xls IT Corporation <br /> Page 2 of 2 04/19/2000 <br />