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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 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 05/18/93 7 87 2739 -1952 000 65 20 81 58 1,400 -- <br /> P2 08/22/93 787 2763 -1976 000 50 2 4 69 53 1,400 -- <br /> P2 12/30/93 7 87 2729 -1942 000 160 45 180 105 42,000 -- <br /> P2 02/17/94 7 87 2697 -1910 000 5 7 28 17 14 270 -- <br /> P2 05/10/94 7 87 2663 -1876 000 24 <0 5 92 69 1,500 -- <br /> P2 08/02/94 787 2808 -2021 000 35 5 0 96 82 1,800 -- <br /> P2 11/01/94 787 2843 -2056 000 18 <0 5 76 66 1,400 -- <br /> P2 02/17/95 787 2571 -1784 000 -- -- -- -- -- <br /> P2 05/11/95 7 87 23 00 -15 13 000 20 <5 0 58 40 1,400 -- <br /> P2 08/24/95 7 87 2442 -1655 000 6 2 <2 5 70 42 1,400 -- <br /> P2 10/19/95 7 87 24 98 -17 11 000 5 3 <2 0 65 34 1,100 <10 <br /> P2 02/13/96 7 87 2276 -14 89 000 6 3 <2 5 77 43 1,700 -- <br /> P2 04/18/96 7 87 2057 -1270 000 5 5 <2 5 74 39 1,600 <12 <br /> P2 08/08/96 7 87 2171 -13 84 000 -- -- -- -- -- -- <br /> P2 11/04/96 787 2230 -1443 000 <5 0 <5 0 51 16 1,500 <25 <br /> P2 02/03/97 787 1766 -979 000 <2 0 <2 0 52 17 1,500 13 <br /> P2 05/08/97 679 1724 -1045 000 18 <2 5 42 65 1,700 15 <br /> P2 08/26/97 679 1896 -12 17 000 17 <2 0 25 2 6 1,500 11 <br /> P2 11/11/97 679 1950 -1271 000 25 <5 0 25 <5 0 1,300 <25 <br /> P2 03/03/98 679 1406 -727 000 17 <5 0 27 <5 0 1,400 <25 <br /> P2 03/03/98 679 <2 0* <br /> P2 05/20/98 6 79 1398 -7 19 000 8 2 <2 0 18 2 0 980 <10 <br /> P2 05/20/98 679 <2 0* <br /> P2 08/19/98 679 1523 -844 000 7 2 <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 14 07 -728 000 <0 5 <0 5 581 <0 5 950 <2 0 <br /> P2 05/05/99 679 1430 -751 000 <0 5 <0 5 836 <0 5 688 2 81 <br /> P2 08/20/99 679 1597 -9 18 0 00 959 197 3 89 130 489 252 <br /> RW1 05/22/90 905 3074 -2169 000 2,000 7,500 2,000 9,800 58,000 -- <br /> RW1 09/25/90 905 3237 -2332 000 7,100 16,000 2,000 9,200 72,000 -- <br /> RWI 12/19/90 9 05 32 29 -2324 000 9,000 20,000 2,300 11,000 73,000 -- <br /> g 1projects1739421masteAwplq i 005L3942gw xls Page 32 of 58 <br />