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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-1 11/17/97 NA NA NA NA NA <br /> MW-1 05/22/98 <10,000 <100 <100 <100 <100 <br /> MW-1 08/12/98 <200 <2 <2 <2 <2 <br /> MW-2 11/17/97 NA NA NA NA NA <br /> MW-2 05/21/98 <10,000 <100 <100 <100 <100 <br /> MW-2 08/12/98 <200 <2 <2 <2 <2 <br /> MW-3 11/17/97 NA NA NA NA NA <br /> • MW-3 05/22/98 <10,000 <100 <100 <100 <100 <br /> MW-3 08/12/98 <2,000 <20 <20 <20 <20 <br /> MW-4(59) 11/17/97 <1,700* 58* <33* <33* <33* <br /> MW-4 05/22/98 <10,000 <100 <100 <100 <100 <br /> MW-4 08/12/98 <2,000 <20 <20 <20 <20 <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-6(4 1) 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-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 /> Oxygenates were analyzed using USEPA Method 8260 <br /> alytical results in parts per billion <br /> MTBE=Methyl tertiary butyl ether <br /> RIPE=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> <=Below detection limit for analytical methods used <br /> *=Raised method reporting lima due to matrix interference and/or other factors <br /> CPIC 1LSG\3RDQTRARC012168MTBE XLS r <br /> Sheet 10/28/98 <br />