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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( )
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE
<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 0 00 130 580 1,000 2,000 9,700 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 8 13 27 17 -1904 000 230 750 410 1,100 10,000 --
<br /> R W2 08/02/94 8 13 2865 -2052 000 -- -- -- -- --
<br /> RW2
<br /> -RW2 11/01/94 8 13 28 99 -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 2383 -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 --
<br /> RW2 10/19/95 8 13 2566 -1753 000 240 360 430 1,200 9,500 <50
<br /> R W2 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 2228 -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
<br /> RW2 02/03/97 8 13 1822 -1009 000 170 120 270 640 6,100 240
<br /> RW2 05/08/97 676 1775 -1099 000 160 130 330 540 7,400 260
<br /> RW2 08/26/97 676 1953 -1277 000 190 170 320 450 7,000 110
<br /> RW2 11/11/97 676 2007 -13 31 000 200 170 370 610 7,200 350
<br /> RW2 03/03/98 676 1447 -771 000 92 160 300 590 6,000 260
<br /> RW2 03/03/98 676 <14*
<br /> RW2 05/20/98 676 1435 -7 59 000 130 140 310 560 6,600 250
<br /> RW2 05/20/98 676 <14*
<br /> RW2 08/19/98 676 1586 -910 000 100 160 330 800 7,500 1,700
<br /> RW2 08/19/98 676 <40*
<br /> RW2 11/18/98 676 1620 -944 0 00 110 130 280 510 5,300 95
<br /> RW2 03/30/99 676 1430 -754 000 41 74 217 329 5,720 <20
<br /> RW2 05/05/99 676 1467 -791 000 634 109 263 545 5,380 68 7
<br /> RW2 08/20/99 676 1602 -926 000 120 56 1 236 265 4,740 251
<br /> RW2 12/06/99 676 1635 -9 59 0 00 72 41 210 2299 2,500 <5
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