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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( /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-MW1 03/30/99 742 1631 -889 000 11,600 25,400 3,390 17,200 144,000 <400
<br /> UVB-MW1 05/05/99 742 1629 -887 000 14,200 28,800 3,360 17,600 105,000 238
<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-MW1 12/06/99 742 1732 -990 000 11,000 26,000 3,500 18,800 130,000 <500
<br /> UVB-MW1 02/29/00 742 15 07 -7 65 000 13,000 31,000 4,200 23,100 180,000 <250
<br /> UVB-MW1 05/16/00 742 1473 -731 000 14,000 31,000 4,000 27,100 160,000 <250
<br /> UVB-MW1 09/11/00 742 17 11 -969 000 12,000 22,000 3,800 18,300 130,000 <120
<br /> UVB-MW1 12/13/00 742 1705 -9 63 000 13,000 28,000 4,100 21,400 130,000 <120
<br /> UVB-MWI 03/08/01 742 1623 -881 000 13,000 27,000 4,900 24,400 210,000 <120
<br /> UVB-MW 1 06/21/01 742 1764 -1021 002 11,000 19,000 4,000 19,900 140,000 <120
<br /> UVB-MW 1 09/20/01 742 18 87 -1145 000 11,000 24,000 4,200 21,400 210,000 <50
<br /> t1VB-A1W 1 12/04/01 740 1855 -1115 000 -- -- __ -- __
<br /> UVB-MW2 02/28/97 7 75 1796 -- 000 200 1,100 190 1,700 9,400 <2 5
<br /> UVB-MW2 05/08/97 775 1994 -12 19 000 092 <0 5 <0 5 1 7 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 11/11/97 775 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 15 82 -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 4 8 2 7 24 250 I6
<br /> UVB-MW2 08/19/98 775 c <2 0*
<br /> UVB-MW2 11/18/98 7 75 1753 -978 000 230 80 25 23 760 <25
<br /> UVB-MW2 03/30/99 775 1663 -8 88 000 805 761 366 240 6,290 <20
<br /> UVB-MW2 05/05/99 7 75 l6 12 -837 000 693 366 457 225 5,510 35 8
<br /> UVB-MW2 08/20/99 775 17 53 -978 000 73 0 759 120 252 2,430 104
<br /> UVB-MW2 12/06/99 775 1768 -9 93 000 23 <1 <1 <1 600 9 4
<br /> UVB-MW2 02/29/00 775 15 33 -758 000 27 12 5 7 5 2 320 <1
<br /> UVB-MW2 05/16/00 7 75 1508 -733 000 87 14 2 8 4 680 7 5
<br /> MTB-MW2 09111100 775 1755 -9 80 000 330 7 1 29 27 2,100 <2 5
<br /> a ipro3e-ts1739421uleslcnKp%gl26113942gw als Page 39 of 40
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