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TABLE 2 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 /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> SWI 09/10/02 825 <br /> SWI 12/18/02 825 -- __ -_ <br /> SWI 03/24/03 8 25 1915 -1090 000 -- -- __ __ <br /> SWI 03/25/03 825 -- -- -- 1,750 1,910 426 1,680 18,100 h 62 0 <br /> SWI 03/25/03 825 <5* <br /> SWI 06/11/03 825 1926 -1101 000 1,970 2,510 570 2,080 18,700 h 580 <br /> SWI 06/11/03 825 <2 5* <br /> SW2 i 02/17/94 -- 2870 -- 000 660 2,000 770 3,600 29,000 -- <br /> SW2 -- Not accessible since 02/17/94 <br /> SW2 02/17/95 -- 2757 Air sparging well--samples not collected <br /> SW2 05/11/95 -- 2484 Air sparging well--samples not collected <br /> SW2 08/24/95 -- -- Air sparging well--samples not collected <br /> SW2 10/19/95 -- Air sparging well--samples not collected <br /> SW2 02/13/96 -- Air sparging well--samples not collected <br /> SW2 04/18/96 -- -- Air sparging well--samples not collected <br /> SW2 08/08/96 -- -- Air sparging well--samples not collected <br /> SW2 11/04/96 -- 2372 -- 000 110 <1 2 <1 2 2 0 320 <6 2 <br /> SW2 02/03/97 -- __ <br /> SW2 05/08/97 <br /> SW2 08/26/97 <br /> SW2 11/11/97 -- <br /> SW2 03/03/98 - <br /> SW2 05/20/98 <br /> SW2 08/19/98 <br /> SW2 11/18/98 <br /> SW2 03/30/99 <br /> SW2 05/05/99 -- -- -- -- -- -- -- -- <br /> SW2 08/20/99 <br /> SW2 12/06/99 -- -- -- -- -- -- _- __ <br /> SW2 02/29/00 <br /> SW2 05/16/00 -- -- -- -- -- -- -- <br /> g1projects173942\i=iasterlwp1gO60313942bxv xis Page 37 of 49 <br />