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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 /> UVB-MW2 06/11/03 774 1913 -1139 000 64 3 3 1 206 155 1,890 h 437 <br /> j UVB-MW2 06/11/03 774 <0 5* <br /> UVB-MW2 09/17/03 774 2055 -1281 000 319 2 0 15 5 180 2,060 h 377 <br /> UVB-MW2 09/17/03 7 74 <0 5* <br /> UVB-MW2 12/08/03 774 2049 -1275 000 400 3 2 48 91 2,280 h 139 <br /> WB-MW2 12/08/03 774 <0 5* <br /> UVB-MW2 03/02/04 774 1904 -1130 000 75 4 2 8 2 7 6 0 2,640 h 270 <br /> UVB-MW2 03/02/04 774 <0 5* <br /> UVB-MW2 06/28/04 774 2028 -1254 000 -- - <br /> UVB-MW2 06/29/04 7 74 _ y 117 5 0 48 106 2,550 h 240 <br /> UVB-MW2 06/29/04 774 <0 5* <br /> VI 05/02/91 857 3174 -23 17 000 20,000 49,000 4,700 25,000 130,000 -- <br /> V1 07/16-17/91 857 3270 -24 13 000 14,000 44,000 3,000 15,000 170,000 -- <br /> V1 10/15/91 857 3325 -2468 000 18,000 51,000 4,200 23,000 200,000 -- <br /> V1 01/28/92 8 57 3151 -2294 Sheen 20,000 58,000 2,400 23,000 150,000 -- <br /> V1 04/30/92 8 57 31 12 -2255 000 15,000 43,000 3,000 18,000 130,000 <br /> VI 08/13/92 857 33 17 -2460 0 00 12,000 44,000 3,600 20,000 180,000 <br /> VI 10/08/92 8 57 3376 -25 18 0 01 Not sampled-LPH <br /> V 1 02/23/93 857 3047 -2190 000 9,800 19,000 3,700 18,000 100,000 -- <br /> V1 05/18/93 8 57 -- __ -- <br /> VI <br /> _V1 08/22/93 8 57 2970 -21 13 000 <br /> VI 12/30/93 857 2905 -2048 000 <br /> VI 02/17/94 857 28 73 -2016 000 -- -- _- __ <br /> V1 05/10/94 857 2833 -1976 000 8,200 37,000 3,600 17,000 110,000 -- <br /> V 1 08/02/94 857 -- __ -- <br /> V 1 <br /> _V1 11/01/94 857 3005 -2148 000 <br /> V1 02/17/95 857 2763 -1906 000 -- -- -- -- __ <br /> VI 05/11/95 857 2487 -1630 000 <br /> VI 08/24/95 857 -- __ __ <br /> V1 10/19/95 8 57 Well dry <br /> V1 02/13/96 857 Well dry <br /> V1 04/18/96 857 Well dry <br /> g Vprojects1739421masterlwp1g0704\3942gw As <br /> Page 45 of 34 <br />