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• • i <br /> 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 /> SW2 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 27 57 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 20 320 <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 /> SW2 09/11/00 -- <br /> SW2 12/13/00 -- -- -- -_ - -- -- __ -- <br /> SW2 03/08/01 -- -- -- _- -- -- -- -- -- _ <br /> SW2 06121/01 <br /> SW2 09/20/01 -- -- -- __ -- -_ -- - -- <br /> SW2 12/04/01 753 1850 -1097 000 <br /> SW2 03/05/02 7.53 -- -- __ __ -- <br /> VI <br /> _VI 05102/91 8 57 3174 -23 17 000 20,000 49,000 4,700 25,000 130,000 -- <br /> g Iprojects%73942Vmsterlwp1g03O2U942gw xis Page 31 of 39 <br />