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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 hate _(feet)_ - -(feeeett) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> --_
<br /> UVB-MWl 08/20/99 742 1700 -958 000 9,330 19,300 2,890 16,300 104,000 1,970
<br /> UVB-MWI 12/06/99 742 1732 -990 000 11,000 26,000 3,500 18,800 130,000 <500
<br /> UVB-MWI 02/29/00 742 1507 -765 000 13,000 31,000 4,200 23,100 180,000 <250
<br /> UVB-MWI 05/16/00 742 1473 -731 000 14,000 31,000 4,000 27,100 160,000 <250
<br /> UVB-MWl 09/11/00 742 1711 -969 0 00 12,000 22,000 3,800 18,300 130,000 <120
<br /> UVB-MWl 12/13/00 742 1705 -963 0 00 13,000 28,000 4,100 21,400 130,000 <120
<br /> UVB-MW 1 03/08/01 742 1623 -881 0 00 13,000 27,000 4,900 24,400 210,000 <120
<br /> UVB-MWl 06/21/01 742 1764 -1021 002 11,000 19,000 4,000 19,900 140,000 <120
<br /> UVB-MWI 09/20/01 742 1887 -1145 000 11,000 24,000 4,200 21,400 210,000 <50
<br /> UVB M W 1 12/04/01 740 18 55 -11 15 000 -- -- -- -- -- --
<br /> U V B-M W I 03/05/02 740 1765 -1025 000 9,090 29,600 3,100 19,700 96,700 h <25
<br /> IJVB-MWI 06/11/02 740 1818 -1078 Sheen 8,440 19,100 2,620 13,600 108,000 h <100
<br /> UVB-MWI 09/10/02 740 1949 -1209 Sheen 9,460 13,70 2,830 13,700 110,000 h 160
<br /> UVB-MWI 09/10/02 740 <50*
<br /> UVB-MWI 12/18/02 740 1922 -1182 000 11,600 27,500 3,600 17,400 122,000 h 460
<br /> UVB-MWI 12/18/02 740 <100*
<br /> UVB-MWl 03/24/03 740 1858 -11 18 000 7,580 16,800 2,420 12,200 110,000 h <50
<br /> UVB-MWI 06/11/03 740 1879 -1139 Sheen 8,620 19,000 3,240 15,600 106,000 h 420
<br /> UVB-MWI 06/11/03 740 <5*
<br /> UVB-MW 1 09/17/03 740 2025 -12 85 000 10,600 22,700 4,100 19,200 129,000 h 280
<br /> UVB-MWI 09/17/03 740 <5*
<br /> LfVB-AIW1 12/08/03 740 2047 -1306 0 01 10,000 19,400 3,750 16,500 140,000 It 550
<br /> UVB-AM 12/08/03 740 <5*
<br /> UVB-MW2 02/28/97 775 1796 -- 000 200 1,100 190 1,700 9,400 <2 5
<br /> UVB-MW2 05/08/97 775 1994 -12 19 000 092 <0 5 <0 5 17 58 3 0
<br /> IJVB-MW2 d 08/26/97 775 2087 -13 12 000 12,000 23,000 2,700 13,000 120,000 1,300
<br /> 11VB-MW2 10/02/97 7 75 -- -- <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 4 1 <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 05120198 775 1582 -807 0 00 2,500 180 950 1,300 16,000 560
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