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<br /> TABLE I 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 /> RW2 12/13/00 676 16 13 -937 000 73 12 100 24 1 2,700 <2 5
<br /> RW2 03/08/01 6 76 1523 -847 000 26 17 62 26 1 2,500 10
<br /> RW2 06/21/01 676 16 67 -991 000 78 99 43 403 3,700 24
<br /> RW2 06/21/01 676 <5*
<br /> RW2 09/20/01 676 17 76 -1100 000 72 46 46 697 4,600 <2 5
<br /> RW2 12/04/01 676 1754 -1078 000 39 19 150 113 3 2,800 <5*
<br /> RW2 03/05/02 676 1665 -989 000 51 5 290 176 182 4,560 h 132
<br /> RW2 03/05/02 676 <0 5*
<br /> RW2 06/11/02 676 1723 -1047 000 360 14 4 106 745 3,830 h 660
<br /> RW2 06/11/02 676 <0 5*
<br /> RW2 09/10/02 676 1837 -1161 000 600 240 154 950 4,380 h 103
<br /> RW2 09/10/02 676 <5*
<br /> RW2 12/18/02 676 18 12 -1136 0 00 540 208 134 694 2,200 h 15 5
<br /> RW2 12/18/02 676 <0 5*
<br /> RW3 05/22/90 8 89 3095 -22 06 0 00 16,000 41,000 5,500 31,000 160,000 --
<br /> RW3 12/19/90 889 3302 -2368 061 Not sampled-LPH
<br /> RW3 01/30/91 8 89 33 73 -24 12 098 Not sampled-LPH
<br /> RW3 05/02/91 8 89 3275 -2347 054 Not sampled-LPH
<br /> RW3 07116-17191 889 3372 -2449 047 Not sampled-LPH
<br /> RW3 10/15/91 8 89 3S27 -2558 1 10 Not sampled-LPH
<br /> RW3 01/28/92 8 89 3269 -2370 0 14 Not sampled-LPH
<br /> RW3 04/30/92 8 89 3227 -2334 006 Not sampled-LPH
<br /> RW3 08/13/92 8 89 3467 -2550 039 Not sampled-LPH
<br /> RW3 10/08/92 889 3536 -2606 056 Not sampled-LPH
<br /> RW3 02/23/93 889 3134 -2245 000 4,100 4,300 1,600 8,300 47,000 --
<br /> RW3 05/18/93 8 89 30 02 -21 13 000 19,000 22,000 3,100 17,000 90,000 --
<br /> RW3 08/22/93 8 89 3060 -2171 000 18,000 22,000 2,800 16,000 110,000 --
<br /> RW3 12/30/93 889 2963 -2074 000 18,000 22,000 2,900 15,000 96,000 --
<br /> RW3 02/17/94 889 2927 -2038 000 9,600 14,000 2,200 9,600 70,000 --
<br /> RW3 05/10/94 8 89 2891 -19 92 000 10,000 16,000 2,200 10,000 76,000 --
<br /> RW3 08/02/94 8 89 3035 -2146 000 -- -- -- -- --
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