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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 /> V 1 11/04/96 857 Well dry <br /> VI 02/03/97 857 Well dry <br /> VI 05/08/97 760 Well dry <br /> V 1 08/26/97 760 Well dry <br /> V 1 11/11/97 760 Well dry <br /> V 1 03/03/98 760 Well dry <br /> V1 05/20/98 760 Well dry <br /> Vi 08/19/98 760 Well dry <br /> VI - - 11/18/98 760 Well dry <br /> V 1 03/30/99 760 <br /> VI 05/05/99 760 Well dry <br /> V1 08/20/99 760 Well dry <br /> VI 12/06/99 760 <br /> VI 02/29/00 760VI 05/16/00 760 <br /> VI 09/11/00 760 -- -- -- <br /> VI <br /> _V1 12/13/00 760 1705 -945 000 83 170 24 128 970 <0 5 <br /> VI 03/08/01 760 1622 -862 000 330 280 140 520 4,200 <2 5 <br /> V1 06/21/01 760 1761 -1001 000 1,500 830 560 1,690 13,000 <12 <br /> VI 09/20/01 760 1875 -11 15 0 00 970 760 440 1,200 8,400 <2 5 <br /> VI 12/04/01 7 58 1853 -1095 000 4,200 12,000 2,000 9,400 76,000 <5* <br /> VI 03/05/02 758 1765 -1007 000 892 30,600 4,850 24,100 62,400 h <10 <br /> VI 06/11/02 7 58 18 15 -1057 Sheen 3,650 9,870 2,080 9,260 62,100 h 600 <br /> V1 06/11/02 7 58 <25* <br /> VI 09/10/02 758 1935 -1177 000 5,590 19,300 3,270 15,600 104,000 h 180 <br /> VI 09/10/02 758 <50* <br /> VI 12/18/02 758 1920 -1162 000 3,160 12,000 2,160 10,400 56,200 h <50 <br /> V2 05/02/91 930 3262 -2332 000 -- -- __ _- <br /> V2 07/16-17191 930 33 57 -2427 000 -- __ __ <br /> V2 10/15/91 930 3408 -2478 000 27,000 43,000 4,300 22,000 190,000 -- <br /> V2 01/28/92 930 3238 -2308 000 27,000 42,000 5,100 25,000 150,000 -- <br /> g Iprojects%739421masterlwp\gI20213942gw xis Page 37 of45 <br /> I <br />