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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-MW 1 08/20/99 742 1700 -958 000 9,330 19,300 2,890 16,300 104,000 1,970
<br /> UVB-M W 1 12/06/99 742 1732 -990 000 11,000 26,000 3,500 18,800 130,000 <500
<br /> UVB-MW 1 02/29/00 742 15 07 -7 65 000 13,000 31,000 4,200 23,100 180,000 <250
<br /> UVB-MW 1 05/16/00 742 1473 -7 31 000 14,000 31,000 4,000 27,100 160,000 <250
<br /> UVB-MWI 09/11/00 742 17 11 -969 000 12,000 22,000 3,800 18,300 130,000 <120
<br /> UVB-MW1 t2/13/00 742 17 05 -9 63 000 13,000 28,000 4,100 21,400 130,000 <120
<br /> UVB-MW 1 03/08/01 742 1623 -8 81 000 13,000 27,000 4,900 24,400 210,000 <120
<br /> UVB-MW 1 06/21/01 742 17 64 40 21 002 11,000 19,000 4,000 19,900 140,000 <120
<br /> UVB-MW 1 09/20/01 742 1887 -1145 000 11,000 24,000 4,200 21,400 210,000 <50
<br /> UVB-MW1 12/04/01 740 1855 -1115 000 -- -- -- -- --
<br /> UVB-MW1 03/05/02 740 1765 -1025 000 9,090 29,600 3,100 19,700 96,700 h <25
<br /> UVB-MW2 02/28/97 775 1796 -- 000 200 1,100 190 1.,700 9,400 <2 5
<br /> UVB-MW2 05/08/97 7 75 1.9 94 -1219 000 092 <0 5 <0 5 17 58 3 0
<br /> UVB-MW2 08/26/97 d 775 2087 -13 12 000 12,000 23,000 2,700 13,000 120,000 1,300
<br /> UVB-MW2 10/02/97 775 -- -- -- <0 5 <0 5 <0 5 <0 5 <50 <2 5
<br /> UVB-MW2 11/11/97 7 75 2143 -1368 000 <0 5 0 99 066 4 L <50 <2 5
<br /> UVB-MW2 03/03/98 775 1595 -820 000 2,200 190 <20 1,300 12,000 <100
<br /> UVB-MW2 03/03/98 7 75 <20*
<br /> UVB-MW2 05/20/98 7 75 1582 -807 000 2,500 180 950 1,300 16,000 560
<br /> UVB-MW2 05/20/98 775 <14*
<br /> UVB-MW2 08/19/98 775 17 03 -928 000 14 48 2 7 24 250 16
<br /> UVB-MW2 08/19/98 775 <2 0*
<br /> UVB-MW2 11/18/98 775 1753 -978 000 230 80 25 23 760 <25
<br /> UVB-MW2 03/30/99 775 16 63 -888 000 805 76 1 366 240 6,290 <20
<br /> UVB-MW2 05/05/99 775 1612 -837 000 693 36 6 457 225 5,510 358
<br /> UVB-MW2 08/20/99 775 1753 -978 000 730 759 120 252 2,430 104
<br /> UVB-MW2 12/06/99 775 1768 -993 000 23 <1 <1 <1 600 9 4
<br /> UVB-MW2 02/29/00 775 1533 -758 000 27 12 5 7 5 2 320 <1
<br /> UVB-MW2 05/16/00 775 15 08 -7 33 000 87 14 28 4 680 75
<br /> UVB-MW2 09/11/00 775 1755 -980 000 330 7 1 29 27 2,100 <2 5
<br /> UVB-MW2 12/13/00 775 1741 -966 000 120 180 19 124 1,800 <2 5
<br /> UVB-MW2 03/08/01 775 1654 -879 000 180 210 44 193 2,700 4 4
<br /> UVB-MW2 06/21/01 775 1793 -1018 000 38 53 6 307 1,200 19
<br /> g%pro3ects1739421mastcrlwplgO3O213942gw x1s Page 38 of 39
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