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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 /> P2 05/20/98 679 <2 0*
<br /> P2 08/19/98 679 1523 -844 000 72 <2 5 8 6 <2 5 850 <12
<br /> P2 08/19/98 679 <2 0*
<br /> P2 11/18/98 679 1575 -896 000 20 <5 0 10 <5 0 1,100 <25
<br /> P2 03/30/99 679 1407 -728 000 <0 5 <0 5 5 81 <0 5 950 <2 0
<br /> P2 05/05/99 679 1430 -751 000 <0 5 <0 5 836 <0 5 688 281
<br /> P2 08/20/99 679 1597 -9 18 000 959 1 97 389 130 489 252
<br /> P2 12/06/99 679 --
<br /> P2 - 02/29/00 679
<br /> P2 05/16/00 679
<br /> P2 09/11/00 679
<br /> P2 I2/13/00 679 --
<br /> P2 03/08/01 679
<br /> P2 06/21/01 679
<br /> P2 09/20/01 679
<br /> P2 1264/01 677
<br /> P2 03/05/02 677
<br /> P2 06/11/02 677 _-
<br /> P2 09/10/02 677 -- - -- -- -- -- --
<br /> P2 12(18102 677 -- -- --
<br /> RW 1 05/22/90 905 3074 -2169 000 2,000 7,500 2,000 9,800 58,000 --
<br /> RW I 09/25/90 905 3237 -2332 000 7,100 16,000 2,000 9,200 72,000 --
<br /> RW I 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 I 05/02/91 905 3263 -2358 000 5,700 17,000 2,700 12,000 67,000 --
<br /> RW 1 07116-17191 905 33 59 -2454 000 5,100 17,000 1,700 8,100 61,000 --
<br /> RWl 10/15/91 905 3402 -2497 000 7,000 21,000 2,600 12,000 93,000 --
<br /> RW I 01/28/92 905 3236 -23 31 000 5,500 18,000 2,500 10,000 66,000 --
<br /> RW i 04/30/92 905 -- __ __
<br /> RW 1 08/13/92 905 3393 -2488 000 4,700 19,000 2,500 12,000 92,000 --
<br /> RW l 10/08/92 905 3448 -2543 000 2,200 8,400 1,500 6,600 52,000 --
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