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<br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHM AVENUE,STOCKTON,CALIFORNIA
<br /> Casing Depth Groundwater LPH Concentration (ItgIL)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> V4 11/18/98 822 17 53 -9 24 009
<br /> V4 03/30/99 122 -- __ __
<br /> V4 05/05/99 822 1595 -772 001 -- -- __ __ __
<br /> V4 08/20/99 822 1761 -939 000 63 7 5 14 14 5 537 190 12 6
<br /> V4 12/06/99 822 1785 -956 0 10 -- -- __ __
<br /> V4 02/29/00 822 1525 -699 006
<br /> V4 05/16/00 822 1526 -701 004
<br /> V4 09/11/00 822 1759 -933 0 05
<br /> V4 12/13/00 822 1745 -923 Sheen -- -- -- __ --
<br /> V4 03/08/01 822 µ 1662 -840 000 680 36,000 7,700 117,000 320,000 <250
<br /> V4 06/21/01 822 1797 -974 002 -- -- __
<br /> V4 09/20/01 822 1928 -1105 001
<br /> V4 12/04/01 8 12 1906 -1094 000 -- -- __ --
<br /> V4 03/05/02 8 12 1690 -878 000 4,480 17,200 2,800 14,100 60,600 h <25
<br /> V4 06/11/02 8 12 1851 -1039 000 900 19,600 3,420 15,700 99,400 h 100
<br /> V4 06/11/02 812 <50*
<br /> V4 09/10/02 8.12 19.75 -11.63 Sheen 890 11,000 3,510 16,600 106,000 h <50
<br /> UVB-MWI 02/28/97 742 1867 -- 000 7,200 18,000 2,000 11,000 99,000 1,100
<br /> UVB-MWI 05/08/97 742 1876 -1134 000 5,900 15,000 1,800 9,000 86,000 1,600
<br /> UVB-MW 1 05/08/97 742 <200*
<br /> UVB-MWI d 08/26/97 742 2050 -1308 000 700 18 19 42 2,400 77
<br /> UVB-MWI 10/02/97 742 -- -- -- 1,200 1,400 240 2,400 17,000 300
<br /> UVB-MWI 11/11/97 742 2110 -1368 000 9,400 16,000 2,300 11,000 91,000 2,200
<br /> UVB-MWI 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-MWI 03/03/98 742 <200*
<br /> UVB-MWI 05/20/98 742 1523 -781 000 12,000 32,000 3,500 19,000 140,000 3,300
<br /> UVB-MWI 05/20/98 742 <133*
<br /> UVB-MW 1 08/19/98 742 1698 -956 000 13,000 22,000 2,900 14,000 100,000 <1,250
<br /> UVB-MW 1 08/19/98 742 <100*
<br /> UVB-MW 1 11/18/98 742 17 20 -978 000 12,000 27,000 3,200 16,000 100,000 <1,000
<br /> UVB-MW 1 03/30/99 742 1631 -8 89 000 11,600 25,400 3,390 17,200 144,000 <400
<br /> 1jVB-MWI 05/05/99 742 1629 -8 87 000 14,200 28,800 3,360 17,600 105,000 238
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