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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 /> i
<br /> SW2 09/17/03 753 <0 5*
<br /> SW2 12/08/03 753 2010 -1257 000 1,190 104 40 2 109 5,820 h 13 9
<br /> SW2 12/08/03 753 <0 5*
<br /> SW2 03/02/04 753 1862 -1109 000 1,080 8 0 320 9 0 5,710 h <5*
<br /> SW2 06/28/04 7 53 19 92 -1239 000 -- -- -- -- -- --
<br /> SW2 06/29/04 7 53 -- -- -- 1,190 140 370 220 4,680 h <0 5*
<br /> SW2 09/27/04 753 2074 -1321 000 -- -- -- -- -- --
<br /> SW2 09/28/04 753 -- -- -- 1,680 225 775 375 9,730 h <0 5*
<br /> SW2 12/01/04 753 2033 -1280 000 -- -- -- -- -- --
<br /> SW2 12/02/04 753 -- -- -- 1,290 162 548 237 2,570 h <0 5*
<br /> SW2 J 03/24/05 753 1840 -1087 0 00 564 7 4 184 7 7 2,260 h <0 5*
<br /> SW2 06/22/05 7 53 1846 -10 93 000 -- - - -- - -
<br /> SW2 1 06/23/05 7 53 -- - - 1,390 17.8 57.2 22.2 4,870 h <0 5*
<br /> UVB-MW i 02/28/97 742 1867 -- 0 00 7,200 18,000 2,000 11,000 99,000 1,100
<br /> UVB-MWI 05/08/97 742 1876 -1134 0 00 5,900 15,000 1,800 9,000 86,000 1,600
<br /> UVB-MW 1 05/08/97 742 <200*
<br /> UVB-MW I d 08/26/97 742 2050 -1308 0 00 700 18 19 42 2,400 77
<br /> UVB-MW I 10/02/97 742 -- -- -- 1,200 1,400 240 2,400 17,000 300
<br /> UVB-MW1 11/11/97 742 21 10 -1368 000 9,400 16,000 2,300 11,000 91,000 2,200
<br /> UVB-MW 1 11/11/97 742 <200*
<br /> UVB-MW 1 03/03/98 742 1555 -8 13 000 13,000 36,000 3,600 18,000 140,000 3,200
<br /> UVB-MWl 03/03/98 742 <200*
<br /> UVB-MW 1 05/20/98 742 1523 -781 000 12,000 32,000 3,500 19,000 140,000 3,300
<br /> UVB-MW1 05/20/98 742 <133*
<br /> UVB-MW1 08/19/98 742 1698 -956 000 13,000 22,000 2,900 14,000 100,000 <1,250
<br /> UVB-MW1 08/19/98 742 <100*
<br /> UVB-MW 1 11/18/98 742 1720 -978 000 12,000 27,000 3,200 16,000 100,000 <1,000
<br /> UVB-MW 1 03/30/99 742 1631 -889 000 11,600 25,400 3,390 17,200 144,000 <400
<br /> UVB-MW 1 05/05/99 742 1629 -8 87 000 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-MW 1 12/06/99 742 1732 -990 000 11,000 26,000 3,500 18,800 130,000 <500
<br /> UVB-MW L 02/29/00 742 1507 -765 000 13,000 31,000 4,200 23,100 180,000 <250
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