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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 /> MW8 09/25/90 7 78 29 17 -2139 000
<br /> MW8 12/19/90 7 78 29 13 -21 35 000
<br /> MW8 01/30/91 7 78 Dry __ __ __ __ _-
<br /> MW8 05/02/91 7 78 2939 -2161 000 830 5,900 4,900 23,000 57,000 --
<br /> MW8 07/16-17191 778 2990 -22 12 a 000 -- -- __ __
<br /> MW8 10/15/91 778 Dry
<br /> MW8 01/28/92 7 78 2931 -21 53 000
<br /> MW8 04/30/92 7 78 28 84 -2106 a 000
<br /> MW8 08/13/92 7 78 2991 -22 13 a 000
<br /> MW8 10/08/92 7 78 Dry __ __ __ __
<br /> M W 8 02/23/93 778 28 13 -2035 000 1,100 5,400 3,300 11,000 49,000 --
<br /> MW8 05/18/93 778 2671 -1893 000 850 5,800 3,400 13,000 53,000 --
<br /> MW8 08/22/93 7 78 2695 -19 17 000 650 4,400 3,500 13,000 52,000 --
<br /> MW8 12/30/93 778 2639 -1861 000 820 6,200 4,200 14,000 50,000 --
<br /> MW8 02/17/94 778 26 10 -1832 000 5I0 3,800 3,400 13,000 44,000 -
<br /> MW8 05/10/94 778 2583 -1805 0 00 520 4,200 3,800 13,000 49,000 --
<br /> MW8 08/02/94 778 2729 -1951 000 290 1,900 1,900 7,500 28,000 --
<br /> MW8 11/01/94 7 78 2764 -19 86 000 460 1,700 3,700 14,000 56,000 --
<br /> MW8 02/17/95 778 2500 -1722 000 500 3,900 4,000 15,000 72,000 --
<br /> MW8 05/11/95 778 2242 -1464 000 680 5,900 4,700 19,000 80,000 --
<br /> MW8 08/24/95 778 2377 -1599 000 520 4,700 4,800 17,000 65,000 --
<br /> MW8 10/19/95 778 2437 -1659 000 150 1,400 2,400 8,600 52,000 <250
<br /> MW8 02/13/96 778 2215 -1437 000 190 2,100 2,600 10,000 57,000 --
<br /> MW8 04/18/96 778 1980 -1202 000 130 1,700 2,400 9,400 43,000 <125
<br /> MW8 08/08/96 7 78 21 11 -13 33 000 200 2,700 3,300 13,000 46,000 <250
<br /> MW8 11/04/96 7 78 21 55 -1377 000 160 1,700 2,700 9,600 48,000 <250
<br /> MW8 02/03/97 778 1678 -9 00 000 <100 1,400 2,500 9,900 42,000 <120
<br /> MW8 05/08/97 645 1666 -1021 0 00 110 880 2,100 7,800 41,000 120
<br /> MW8 08/26/97 645 1846 -1201 000 93 950 2,200 7,500 35,000 150
<br /> MW8 11/11/97 645 18 98 -1253 000 <50 700 2,500 9,100 36,000 <250
<br /> MW8 11/11/97 645 69*
<br /> MW8 03/03/98 645 1302 -657 000 <50 780 1,900 6,500 26,000 <250
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