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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 <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH-g MTBE <br /> SW2 02/13/96 -- -- Air spargmg well samples not collected <br /> SW2 04/18/96 -- -- Air spargmg well--samples not collected <br /> SW2 08/08/96 -- -- Air spargmg 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 /> SW2 09/11/00 <br /> SW2 12/13/00 <br /> SW2 03/08/01 <br /> SW2 06/21/01 <br /> SW2 09/20/01 -- -- -- __ <br /> SW2 12/04/0I 7 53 1850 -1097 000 -- -- -- -- -- <br /> SW2 03/05/02 753 -- -- -- <br /> SW2 06/11/02 753 -- -- -- -- -- -- -_ __ __ <br /> SW2 09/10/02 753 <br /> SW2 12/18/02 753 -- -- -- -- -- -- -- -- ._ <br /> SW2 03/24/03 753 1855 -1102 000 1,360 <5 330 <5 6,980 h 260 <br /> SW2 03/24/03 753 <2 5* <br /> SW2 06/11/03 7 53 1873 -1120 000 2,570 200 620 220 6,770 h 38 0 <br /> SW2 06/11/03 753 <0 5* <br /> SW2 09/17/03 753 2014 -1261 000 2,170 275 87 6 408 7,840 h 804 <br /> I <br /> g1projects1739421masterlwp\g4605L3942gw xls Page 44 of 59 <br />