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TABLE 2 <br /> GROUNDWATER ANALYTICAL RESULTS <br /> FOR OXYGENATES AND ADDITIONAL COMPOUNDS <br /> Former ARCO Service Station No. 548 <br /> 1612 Hammer Lane, Stockton, California <br /> Well TBA MTBE DIPS ETBE TAME 1,2-DCA <br /> Number Date gg/L µg/L ltg/L Ag/1L n/L µg/L <br /> MW-1 6/26/00 <100 <2 <2 <2 <2 NA <br /> 9/28/00 <200 <2 <2 <2 <2 18.9 <br /> 12/18/00' <200 11.6 <2 <2 <2 NA <br /> 3/14/01 <20 19 <1.0 <1.0 <1.0 8.05 <br /> 6/19/01 <100 8.8 <2 <2 <2 4.6 <br /> MW-2 6/26/00 <100 <2 <2 <2 <2 NA <br /> 9/28/00 <200 <2 <2 <2 <2 5.28 <br /> 12/18/00' <200 <2 <2 <2 <2 NA <br /> 3/14/01 <100 <5.0 <5.0 <5.0 <5.0 7.45 <br /> 6/19/01 <100 <2 <2 <2 <2 3.6 <br /> MW-3 6/26100 <100 6.3 <2 <2 <2 NA <br /> 9/28/00 <200 161 <2 <2 <2 <2 <br /> 12/18/00' <200 <2 <2 <2 <2 NA <br /> 3114/01 23.2 <1.0 <1.0 <1.0 <1.0 <1.0 <br /> • 6/19/01 <100 <2 <2 <2 <2 <2 <br /> MW-4 6/26100 <100 <2 <2 <2 <2 NA <br /> 9/28/00 <200 <2 <2 <2 <2 <2 <br /> 12/18/00' <200 <2 <2 <2 <2 NA <br /> 3114/01 <20 <1.0 <1.0 <1.0 <1.0 <1.0 <br /> 6/19/01 <100 <2 <2 <2 <2 <2 <br /> MW-5 ' 6/26/00 <100 42 <2 <2 <2 NA <br /> 9/28/00 <200 61 <2 <2 <2 38.4 <br /> 12/18/00' <200 <2 <2 <2 <2 NA <br /> 3/14/01 <20 <1.0 <1.0 <1.0 <1.0 <1.0 <br /> 6/19/01 <100 <2 <2 <2 <2 <2 <br /> MW-6 6/26/00 <100 14 <2 <2 <2 NA <br /> 9/28100 <200 3.98 <2 <2 <2 29.2 <br /> 12/18/001 <200 <2 <2 <2 <2 NA <br /> 3/14/01 <20 2.12 <1.0 <1.0 <1.0 28.8 <br /> 6/19/01 <100 7.2 <2 <2 <2 17 <br /> ltg/L=micrograms per liter. TBA=Tertiary butyl alcohol. <br /> Oxygenates analyzed by USEPA Method 8260. MTBE=Methyl tertiary butyl ether. <br /> <=Below detection limit for analytical method_s used. DIPE W Di-isopropyl ether. <br /> NA=not analyzed. ETBE=Ethyl tertiary butyl ether. <br /> . I This sample was analyzed outside EPA recommended holding time. TAME=Tertiary amyl methyl ether. <br /> 1,2-DCA= 1,2-Dichloroethane <br /> Delta <br /> Arco 0548 Quarterly Data.XLS 1 of 1 8115101 <br />