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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCRTON,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 /> MW12 03/03/98 875 1705 -830 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW12 03/03/98 875 <2 0* <br /> MW12 05/20/98 875 1623 -748 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW12 05/20/98 875 <2 0* <br /> MW12 08/19/98 875 1758 -8 83 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW12 08/19/98 875 <2 0* <br /> MW12 11/18198 875 18 10 -935 000 -- -- __ -- <br /> MW12 <br /> MW12 03/30/99 875 1630 -755 000 -- -- -_ -- <br /> MW12 <br /> _MW12 05/05/99 875 1644 -769 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> MW12 08/20/99 8 75 -- __ -- <br /> MW12 <br /> _MW12 12/06/99 875 <br /> MW 12 02/29/00 875 -- __ __ <br /> MW12 05/16/00 8 75 1628 -753 000MW12 09/11/00 875 -- -- <br /> MW12 <br /> _MW12 12/13/00 875 -- -- <br /> MW12 <br /> _MW12 03/08/01 8 75 1730 -8 55 000 <0 5 <0 5 <0 5 4 5 <50 <0 5 <br /> MW12 06/21/01 875 1862 -9 87 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW12 09/20/01 8 75 1985 -11 10 000 <br /> -- <br /> MW12 12/04/01 775 1966 -1191 000 <br /> MW12 03/05/02 775 -- -_ _- h MW12 06111/02 775 <br /> MW12 09/10/02 <br /> 775 Not Accessible - <br /> MW12 12/18/02 7 75 Not Accessible <br /> MW12 03/24/03 775 Not Accessible __ — __ <br /> M W 13 05/18/93 949 3375 -2426 000 1 1 <0 5 <0 5 <1 71 <br /> MW 13 08/22/93 949 3505 -2556 000 <0 5 <0 5 <0 5 <0 5 <50 <br /> MW 13 12/30/93 949 3329 -2380 000 <0 5 <0 5 <0 5 <0 5 <50 <br /> MW 13 02/17/94 949 3273 -2324 000 2 3 <0 5 <0 5 0 5 <50 <br /> MW 13 05/10/94 949 3200 -22 51 000 1 1 <0 5 <0 5 <0 5 110 -- <br /> M W 13 08/02/94 949 3330 -23 81 000 1 3 6 8 5 9 35 620 <br /> MW 13 11101194 9 49 3397 -2448 000 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> b lprojects1739421mastcr\wp%gO30313942bw xls Page 23 of 47 <br />