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Rpm <br /> 0 0 0 <br /> TABLE 1 GROUNDWATER MONITORING DATA, FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON, CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration /L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (feet msl) (feet) (feet msl) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> RW4 02/29/00 786 <br /> 05/16/00 1520 -734 000 5 6 57 220 363 2,500 21 <br /> 09/11/00 1795 -1009 000 5 7 5 8 17 7 7 550 <0 5 <br /> 12/13/00 1785 -999 0.00 5 6 088 17 4 4 820 <0 5 <br /> SWI 02/17/94 -- Not accessible since 02/17/94 <br /> 02/17/95 2801 Air sparging well -- samples not collected <br /> 05/11/95 -- Air sparging well-- samples not collected <br /> 08/24/95 -- Air sparging well -- samples not collected <br /> 10/19/95 -- Air sparging well -- samples not collected <br /> 02/13/96 -- Air sparging well -- samples not collected <br /> 04/18/96 -- Air sparging well -- samples not collected <br /> 08/08/96 Air sparging well -- samples not collected <br /> 11/04/96 2424 -- 000 2,400 3,100 290 2,800 25,000 <250 <br /> 02/03/97 -- -- -- <br /> 05/08/97 -- -- -- -- __ <br /> 08/26/97 -- --11/11/97 -- -- -- <br /> 03/03/98 -- -- -- -- -- _ -- <br /> 05/20/98 -- -- -- -- -- -- -- -- -- <br /> 08/1919$ -- -- -- -- -- -- -- -- <br /> 11/18/98 -- -- -- -- -- -- -- -- <br /> 03/30/99 -- -- -- <br /> 05/05/99 -- -- -- <br /> 08/20/99 -- -- -- -- -- -- -- -- <br /> 12/06/99 -- -- -- -- -- -- -- -- <br /> 02/29/00 -- -- -- <br /> f Ipro)eus1739421masterlwp1q I2QM3942gw xls Page 33 of 43 <br />