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I <br /> February 2002 Quarterly Ground Water Monitoring <br /> 1645 Cherokee Lane,Stockton,CA <br />' Hydra-Environmental Technologies,Inc <br />' Table 3: Ground Water Analytical Results <br /> Central California Traction Company,Stockton CA <br />' Well No TPH-d TPH B T E X TBA MTBE PIPE ETBE I TAME 1,2- EDB <br /> -g DCA <br /> Concentrations in parts per billion(ppb) <br /> MW-1 <br /> 9/1/2000 100* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <I 0 <br /> 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 <br />' 7/23/2001 <240** <50 <0 50 <0 50 <0 50 <0 50 NR NR NR NR NR NR NR <br /> 11/15/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> 2/9/2002 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> MW-2 <br /> 9/l/2000 87* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <10 <br /> 5/1/2001 <50 <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <10 <br /> 7/23/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> 11/15/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> 2/9/2002 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> MW-3 <br /> ' 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 <br /> 5/1/2001 89* <50 <0 50 <0 50 <0 50 <0 50 <5 0 <5 0 <10 0 <5 0 <5 0 <10 <10 <br /> 7/23/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> ' 11/15/2001 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> 2/9/2002 NS NS NS NS NS NS NR NR NR NR NR NR NR <br /> MW-4 <br /> 11/15/2001 NS NS NS NS NS NS I NR NR NR NR NR NR NR <br /> ' 2/9/2002 NS NS I NS NS NS NS NR NR NR NR NR NR NR <br /> Notes <br /> * Hydrocarbon reported does not match the diesel standard,probably degraded diesel <br /> ' ** Analysis based on insufficient sample because of laboratory QA/QC problems <br /> NR Not Required by San Joaquin County Public Health Services,Environmental Health Division(SJCPHS,EHD) <br /> NS Not sampled since well was dry <br /> TPH-d= total petroleum hydrocarbons as diesel <br /> ' TPH-g= total petroleum hydrocarbons as gasoline <br /> B= benzene D1PE= di-isopropyl ether <br /> T= toluene ETBE= ethyl tent-butyl ether <br /> E= ethyl benzene TAME= tert-amyl methyl ether <br /> ' X= total xylenes 1,2-DCA= 1,2-dichloroethane <br /> TBA= tert-butyl alcohol EDB= 1,2-dibromoethane <br /> 5 <br /> 1 <br />