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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(pg/L)
<br /> Well Elevation to Water Elevation Thickness Ethyl-
<br /> Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH-g MTBE
<br /> RWI 10/19/95 9 05 2685 -1780 0 00 680 3,100 1,200 3,600 25,000 <250
<br /> RWI 02/13/96 9 05 2270 -13 65 0 00 590 2,900 920 2,700 21,000 --
<br /> RWI 04/18/96 905 2229 -1324 0 00 510 2,500 980 2,700 23,000 <100
<br /> RWI 08/08/96 9 05 2344 -1439 000 600 3,200 I,200 3,500 20,000 <250
<br /> RW1 11/04/96 9 05 2381 -1476 000 710 2,600 1,200 3,200 23,000 900
<br /> RW 1 02/03/97 905 1963 -1058 000 390 1,900 680 2,000 16,000 440
<br /> RWI 05/08/97 770 1976 -1206 000 430 2,000 860 2,300 18,000 620
<br /> RWI 08/26/97 770 2051 -1281 000 600 2,600 1,200 3,400 21,000 380
<br /> RWI 11/11/97 770 2I 11 -1341 000 410 1,500 750 1,800 13,000 520
<br /> RWI 11/11/97 7 70 <25*
<br /> RWI 03/03/98 770 15 51 -7 81 000 320 1,300 660 1,700 11,000 420
<br /> RWI 03/03/98 770 <33*
<br /> RWI 05/20/98 770 1530 -760 000 310 1,500 670 1,800 13,000 760
<br /> RWI 05/20/98 770 <33*
<br /> RWI 08/19/98 770 1675 -905 000 340 1,200 630 1,700 18,000 1,100
<br /> RWI 08/19/98 770 <40*
<br /> RWI 11/18/98 770 17 21 -951 000 250 840 520 1,100 8,200 90
<br /> RWI 03/30/99 770 1531 -7 61 000 197 678 432 967 8,150 <20
<br /> RWI 05/05/99 770 15 66 -796 000 234 833 499 1,270 8,680 58 4
<br /> RWI 08/20/99 770 1731 -9 61 000 234 415 409 728 6,450 315
<br /> RWI 12/06/99 770 1742 -972 000 180 220 310 500 4,300 <5
<br /> RWI 02/29/00 770 15 05 -735 000 280 200 750 1,270 14,000 <1
<br /> RWI 05/16/00 770 1488 -7 18 000 280 190 670 1,010 10,000 15
<br /> RWI 09/11/00 770 1725 -955 000 300 240 550 950 9,400 <5
<br /> RWI 12/13/00 770 17 17 -947 000 330 470 1,400 3,210 29,000 <120
<br /> RWI 03/08/01 770 1635 -865 000 53 14 120 128 2,300 <0 5
<br /> RWI 06/2I/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 18 86 -11 15 0 01 -- -- -- -- -- --
<br /> RWI 12/04/01 768 1864 -1096 0 00 -- -- -- -- -- --
<br /> RWI 03/05/02 768 1780 -1012 000 148 820 214 298 3,360 h 970
<br /> RWI 03/05/02 768 <0 5*
<br /> RW 1 06/11/02 768 1828 -1060 000 755 250 120 950 1,640 h 235
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