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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) ) - benzene Xylenes TPH-� MTBE
<br /> _ ) (feet Benzene Toluene be _
<br /> P2 03/24/03 677
<br /> P2 06/11/03 677
<br /> RW 1 05/22/90 9 05 3074 -2169 000 2,000 7,500 2,000 9,800 58,000
<br /> RW 1 09/25/90 905 3237 -23 32 000 7,100 16,000 2,000 9,200 72,000 --
<br /> RW1 12/19/90 905 3229 -2324 000 9,000 20,000 2,300 11,000 73,000 --
<br /> RW 1 01/30/91 905 3267 -2362 000 4,400 13,000 1,700 8,400 57,000 --
<br /> RW 1 05/02/91 905 3263 -23 58 000 5,700 17,000 2,700 12,000 67,000 --
<br /> RW 1 07/16-17/91 905 33 59 -2454 000 5,100 17,000 1,700 8,100 61,000 --
<br /> RW I 10/15/91 905 3402 -2497 000 7,000 21,000 2,600 12,000 93,000 --
<br /> RW 1 01/28/92 905 3236 -2331 000 5,500 18,000 2,500 10,000 66,000 --
<br /> R W I 04/30/92 9 05
<br /> RW1 08/13/92 905 3393 -24 88 000 4,700 19,000 2,500 12,000 92,000 --
<br /> RW 1 10/08/92 9 05 34 48 -2543 000 2,200 8,400 1,500 6,600 52,000 --
<br /> R W 1 02/23/93 905 3169 -2264 000 1,800 4,100 1,000 3,900 26,000 --
<br /> RW I 05/18/93 9 05 29 74 -2069 000 1,900 7,800 1,300 5,000 36,000 --
<br /> RW 1 08/22/93 905 3003 -2098 000 1,800 7,600 1,500 5,800 39,000 --
<br /> RW 1 12/30/93 9 05 2938 -2033 000 1,600 2,400 1,300 3,700 20,000 --
<br /> RW 1 02/17/94 9 05 2897 -1992 000 1,000 4,000 1,100 3,600 26,000 -
<br /> RW 1 05/10/94 905 2853 -1948 000 1,200 5,300 1,400 5,000 34,000 --
<br /> RW 1 08/02/94 905 2995 -2090 000 1,300 4,700 1,400 4,800 28,000 --
<br /> RWI 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 /> RWI 05/11/95 905 25 13 -1608 000 780 4,000 1,300 4,300 32,000 --
<br /> RW1 08/24/95 9 05 2641 -1736 000 820 4,000 1,500 4,600 24,000 --
<br /> RW1 10/19/95 905 2685 -1780 000 680 3,100 1,200 3,600 25,000 <250
<br /> RW1 02/13/96 905 2270 -1365 000 590 2,900 920 2,700 21,000 --
<br /> RW1 04/18/96 9 05 2229 -1324 000 510 2,500 980 2,700 23,000 <100
<br /> RW I 08/08/96 905 2344 -1439 000 600 3,200 1,200 3,500 20,000 <250
<br /> RW 1 11/04/96 9 05 2381 -14 76 000 710 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 /> RW 1 05/08/97 770 1976 -1206 0 00 430 2,000 860 2,300 18,000 620
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