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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 /> RW I 08/02/94 905 2995 -2090 000 1,300 4,700 1,400 4,800 28,000 --
<br /> RW 1 11/01/94 905 3034 -2129 000 1,100 4,600 1,300 4,600 28,000 --
<br /> RW 1 02/17/95 905 2782 -1877 000 820 3,600 1,200 3,900 24,000 --
<br /> RW1 05/11/95 9 05 25 l3
<br /> -1608 000 780 4,000 1,300 4,300 32,000 --
<br /> RW 1 08/24/95 9 OS 26 41 -1736 000 820 4,000 1,500 4,600 24,000 <250
<br /> RW1 10/19/95 9 OS 26 85 -1780 000 680 3,100 1,200 3,600 25,000
<br /> RW t 02/13/96 905 2270 -1365 000 590 2,900 920 2,700 21,000 --
<br /> RW 1 04/18/96 905 2229 -1324 000 510 2,500 980 2,700 23,000 G25d
<br /> RW 1 08/08/96 905 2344 -1439 000 600 3,200 1,200 3,500 20,000
<br /> RW 1 11104/96 905 2381 -1476 000 710 2,600 1,200 3,200 23,000 900
<br /> RW I 02/03/97 905 1963 -1058 000 390 1,900 680 2,000 16,000 440
<br /> RW I 05/08/97 770 1976 -1206 000 430 2,000 860 2,300 18,000 620
<br /> RW1 08/26/97 770 2051 -1281 000 600 2,600 1,200 3,400 21,000 380
<br /> RW 1 11/11/97 770 21 11 -1341 000 410 1,500 750 1,800 13,000 <20
<br /> RW 1 11/11/97 770
<br /> RW I 03/03/98 770 15 51 -781 000 320 1,300 660 1,700 11,000 420 0
<br /> RW 1 03/03/98 770
<br /> RW1 05/20/98 770 1530 -760 000 310 1,500 670 1,$00 13,000 760
<br /> RW 1 05/20/98 770
<br /> RW 1 08119/98 770 1675 -905 000 340 1,200 b30 1,700 1$,000 <'40*0
<br /> RW I 08/19/98 770
<br /> RW1 11/18/98 770 1721 -951 000 250 840 520 1,100 8,2D0 920
<br /> RW I 03/30/99 770 15 31 -761 000 197 678 432 967 8,150
<br /> RW 1 05/05/99 770 1566 -796 000 234 833 499 1,270 8,680 584
<br /> RW 1 08/20/99 770 1731 -961 000 234 415 409 728 6,450 315
<br /> <5
<br /> RW 1 12/06/99 770 1742 -972 000 180 220 310 500 4,300
<br /> RW 1 02/29/00 770 1505 -735 000 280 200 750 1,270 14,000 <I
<br /> RW1 05/16/00 770 1488 -7 18 000 280 190 670 1,010 10,000
<br /> 15
<br /> RW 1 09/11/00 770 1725 -955 000 300 240 550 950 9,400 5
<br /> RW 1 12/13/00 770 1717 -947 000 330 470 1,400 3,210 29,000 <120
<br /> <5
<br /> RW1 03/08/01 770 1635 -865 000 53 14 120 128 2,300 <0 5
<br /> RW I 06/21/01 770 1770 -1000 000 130 300 530 1,450 17,000 2
<br /> RW 1 06/21/01 770
<br /> Page 33 of 56
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