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<br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH Concentration ( IL)
<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 I 12/04/01 740 18 55 -11 15 000 -- -- -- -- -- --
<br /> UVB-MW 1 03/05/02 740 1765 -1025 000 9,090 29,600 3,100 19,700 96,700 h <25
<br /> UVB-MW1 06/11/02 740 18 18 -1078 Sheen 8,440 19,100 2,620 13,600 108,000 h <100
<br /> UVB-MW 1 09/10/02 740 1949 -1209 Sheen 9,460 13,700 2,830 13,700 110,000 h 160
<br /> UVB-MW1 09/10/02 740 <50*
<br /> UVB-MW 1 12/18/02 740 1922 -1 1 82 000 11,600 27,500 3,600 17,400 122,000 h 460
<br /> UVB-MW I 12/18/02 740 <100*
<br /> UVB-MW 1 03/24/03 740 1858 -11 18 000 7,580 16,800 2,420 12,200 110,000 h <50
<br /> UVB-MW1 06/11/03 740 1879 -1139 Sheen 8,620 19,000 3,240 15,600 106,000 h 420
<br /> UVB-MW 1 06/11/03 740 <5*
<br /> UVB-MWI 09/17/03 740 20 25 •1139 000 10,600 22,700 4,100 19,200 129,000 h 280
<br /> UVB-M W 1 09/17/03 740 <5*
<br /> 1JVB-MW2 02/28/97 775 1796 -- 000 200 1,100 190 1,700 9,400 <2 5
<br /> UVB-MW2 05/08/97 775 1994 -1219 000 092 <05 <05 17 58 30
<br /> UVB-MW2 d 08/26/97 775 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 11/11/97 775 2143 -1368 000 <0 5 099 066 41 <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 03/03/98 775 <20*
<br /> UVB-MW2 05/20/98 775 1511 -107 000 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 4 8 27 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 1663 -888 000 805 761 366 240 6,290 <20
<br /> UVB-MW2 05/05/99 7 75 16 12 -937 000 693 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-M W 2 12/06/99 775 1768 -993 000 23 <l <1 <1 600 9 4
<br /> UVB-MW2 02/29/00 7 75 1533 -7 58 000 27 1 2 5 7 5 2 320 <1
<br /> UVB-MW2 05/16/00 775 1508 -733 000 87 14 2 8 4 680 7 5
<br /> [AVB-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 03/08101 7 75 1654 -879 000 180 210 44 193 2,700 4 4
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