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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 /> RW 1 03/25/03 768 -- -- -- 105 698 163 229 3,690 h 208
<br /> RWl 03/25/03 768 <0 5*
<br /> RW1 06/11/03 768 1887 -1119 000 180 115 187 251 4,740 h 706
<br /> RW1 06/11/03 7 68 <0 5*
<br /> RW2 05/22/90 8 13 2940 -21 27 000 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 3062 -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 07/16-17191 8 13 31 95 -2382 000 600 1,900 730 3,900 21,000 --
<br /> RW2 10/15/91 8 13 32 53 -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 -21 58 000 130 580 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 08/22/93 813 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 8 13 27 17 -1904 000 230 750 410 1,100 10,000 --
<br /> RW2 08/02/94 8 13 2865 -2052 0 00 -- -- __ __
<br /> RW2 11/01/94 8 13 28 99 -2086 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 -1706 000 200 420 430 1,000 12,000 --
<br /> RW2 10/19/95 8 13 2566 -1753 000 240 360 430 1,200 9,500 <50
<br /> RW2 02/13/96 8 13 2342 -1529 000 170 370 400 1,100 11,000 --
<br /> RW2 04/18/96 8 13 21 10 -1297 000 180 280 350 880 9,600 74
<br /> RW2 08/08/96 8 13 2229 -14 15 000 160 360 470 1,100 7,800 <50
<br /> RW2 11/04/96 8 13 2268 -1455 000 230 180 460 980 10,000 290
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