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CAMBMA <br /> 11 <br /> Table 1. Groundwater Analytical Data-Oxygenates and mead 3�avengers,Former Shell Service Station, 1267 Country Club Boulevard,Stockton,California <br /> Sample Date Ethanol TBA DIPE ETRE TAME EDB 1,2-DCA Methanol <br /> (RO) (go) (11g1l) (µ8n) (ug/1) (RPS) Wail (141) <br /> S-4 26-Feb-98 <500 <100 <2.0 <2.0 <2.0 NA NA NA <br /> S4 12-Aug-98 <500 <100 <2.0 <2.0 <2.0 NA NA <1,000 <br /> S4 11-Feb-99 <100 <20.0 <1.00 <1.00 <1.00 <0.500 <0.500 <1,000 <br /> S-4 06-May-99 <1,000 <200 4.00 <2.00 <2.00 NA NA <1,000 i <br /> S4 31-Aug-99 <1,000 <200 <2.00 <2,00 <2.00 NA NA <1,000 s <br /> S4 22-Nov-99 <1,000 <200 <2.00 <2.00 <2.00 NA NA <1,000 <br /> S-5 26-Feb-98 <500 <100 <2.0 <2.0 <2.0 NA NA NA <br /> S-5 12-Aug-98 <500 <100 <2.0 <2.0 <2.0 NA NA <1,000 <br /> S-5 I1-Feb-99 <100 <20.0 <1.00 <1.00 <1.00 <0.500 <0.500 <1,000 <br /> S-5 06-May-99 <1,000 <200 <2.00 <2.00 <2.00 NA NA <1,000 <br /> S-5 31-Aug-99 <1,000 <200 <2.00 <2.00 <2.00 NA NA <1,000 <br /> S-5 22-Nov-99 <1,000 <200 <2.00 <2.00 <2.00 NA NA <1,000 <br /> S-6 26-Feb-98 <500 <100 4.0 <2.0 <2.0 NA NA NA <br /> S-6 12-Aug-98 <500 <100 <2.0 <2.0 <2.0 NA NA <1,000 <br /> S-6 I1-Feb-99 <100 40.0 <1.00 <1.00 <1.00 <0.500 <0.500 <1,000 <br /> S-6 06-May-99 <1,000 <200 <2.00 <2.00 <2.00 NA NA <1,000 <br /> S-6 31-Aug-99 <1,000 <200 4.00 4.00 <2.00 NA NA <1,000 <br /> S-6 22-Nov-99 <1,000 <200 <2.00 4.00 4.00 NA NA <1,000 <br /> Abbreviations and Notes: <br /> TBA=Tertiary butyl alcohol or tertiary butanol <br /> DIPE=Di-isopropyl ether <br /> ETBE=Ethyl tertiary butyl ether <br /> TAME=Tertiary amyl methyl ether <br /> EDB=Ethylene dibromide <br /> 1,2-DCA=1,2-Dichloroethane <br /> NA=Not analyzed <br /> DUP=Duplicate sample <br /> <x=Not detected at reporting limit x <br /> µg/l=Micrograms per liter <br /> Methanol by EPA Method 8015(Modified)or EPA Method 8260 <br /> All other constituents anal EPA Method 8260 <br /> 0943 10 Pa*2 <br />