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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 um er Date (feet) {feet) (feet) {feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> RWI 03/08/01 770 1635 -865 000 53 14 120 128 2,300 <0 5
<br /> RWI 06/21/01 770 1770 -1000 000 130 300 530 1,450 17,000 24
<br /> RWI 06/21/01 770 <5*
<br /> RWI 09/20/01 770 1886 -11 15 001 -- -- -- -- _- --
<br /> RWI 12/04/01 7 68 1864 -1096 000 -- -- -- __ --
<br /> RWI 03/05/02 7 68 1780 -1012 000 148 820 214 298 3,360 h 970
<br /> RWI 03/05/02 7 68 <0 5*
<br /> RWl 06/11/02 7 68 1828 -1060 000 755 25 0 120 95 0 1,640 h 235
<br /> RWI 06/11/02 7 68 <0 5*
<br /> RWI 09/10/02 7 68 1950 -1182 000 63 4 313 121 116 2,750 h 295
<br /> RWI 09/10/02 7 68 <0 5*
<br /> RW2 05/22/90 8 13 2940 -2127 000 2,000 6,100 1,800 10,000 51,000 --
<br /> RW2 09/25/90 8 13 3079 -2266 000 1,000 5,200 1,600 8,600 33,000 --
<br /> RW2 12/19/90 8 13 30 62 -2249 000 940 3,500 860 5,200 16,000 --
<br /> RW2 01/30/91 8 13 3108 -2295 000 580 2,300 580 3,600 13,000 --
<br /> RW2 05/02/91 8 13 3097 -2284 000 1,600 3,400 1,600 7,900 32,000 --
<br /> RW2 07/16-17/91 8 13 3195 -2382 000 600 1,900 730 3,900 21,000 --
<br /> RW2 10/15/91 8 13 3253 -2440 000 510 2,700 720 3,300 22,000 --
<br /> RW2 01/28/92 8 13 3076 -2263 000 260 1,200 590 2,500 17,000 --
<br /> RW2 04/30/92 8 13 Not accessible -- -- -_ --
<br /> RW2 08/13/92 8 13 3247 -2434 000 130 630 280 1,100 8,500 --
<br /> RW2 10/08/92 8 13 3303 -2490 000 130 630 250 1,400 11,000 --
<br /> RW2 02/23/93 8 13 2971 -2158 000 130 580 1,000 2,000 9,700 --
<br /> RW2 05/18/93 8 13 2830 -20 17 000 420 1,400 750 2,400 16,000 --
<br /> RW2 08/22/93 8 13 2857 -2044 000 330 1,100 620 1,900 15,000 --
<br /> RW2 12/30/93 8 13 2788 -1975 000 620 870 690 2,600 26,000 --
<br /> RW2 02/17/94 8 13 2749 -1936 000 170 140 150 540 5,600 --
<br /> RW2 05/10/94 813 2717 -1904 000 230 750 410 1,100 10,000 --
<br /> RW2 08/02/94 8 13 28 65 -2052 000 -- -- -_ __ __
<br /> RW2 11/01/94 8 13 2899 -20 86 000 -- -- -- -- -_
<br /> RW2 02/17/95 8 13 2644 -1831 000 220 680 460 1,400 11,000 --
<br /> RW2 05/11/95 8 13 23 83 -1570 000 350 670 560 1,500 12,000 -
<br /> RW2 08/24/95 8 13 25 19 -17 06 000 200 420 430 1,000 12,000 --
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