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' November 2001 Quarterly Ground Water Monitoring 1645 Cherokee Lane,Stockton,CA ' Hydro-Environmental Technologies,Inc ' Table 3: Ground Water Analytical Results Central California Fraction Company,Stockton CA ' Well No TPH-d TPH B T E I X I TBA I MTBE I PIPE ETBE TAME 1,2- EDB .g DCA Concentrations in parts per billion(ppb) ' MW-1 9/1/2000 100* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <10 5/1/2001 60* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <10 ' 7/23/2001 <240** <50 <0 50 <0 50 <0 50 <0 50 NR NR NR NR NR NR NR 11/15/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR ' MW-2 9/1/2000 87* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <10 5/1/2001 <50 <50 <0 50 <0 50 <0 50 <0 50 <50 <5 0 <10 0 <5 0 <5 0 <10 <10 ' 7/23/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR 11/15/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR MW-3 9/1/2000 100* <50 <0 50 <050 <0 50 <0 50 <5 0 <5 0 <100 <5 0 <5 0 <10 <10 5/1/2001 89* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <100 <5 0 <5 0 <10 <1 0 ' 7/23/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR 11/15/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR ' MW-4 1-1/15/2001 NS NS NS I NS NS NS NR NR NR NR NR NR NR I ' Notes * Hydrocarbon reported does not match the diesel standard,probably degraded diesel ** Analysis based on insufficient sample because of laboratory QA/QC problems ' NR Not Required by San Joaquin County Public Health Services,Environmental Health Division(SJCPHS,EHD) NS Not sampled since well was dry TPH-d= total petroleum hydrocarbons as diesel TPH-g= total petroleum hydrocarbons as gasoline B= benzene T= toluene E= ethyl benzene X= total xylenes ' TBA W tert-butyl alcohol MTBE= methyl tert-butyl ether DIPE= di-isopropyl ether ETBE= ethyl tert-butyl ether ' TAME= tert-amyl methyl ether 1,2-DCA= 1,2-dichloroethane EDB= 1,2-dibromoethane S 1