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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> I <br /> Casing Depth Groundwater LPH Concentration(pg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date - (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW1 06/11/02 638 1649 -1011 000 -- -- -- -- -- -- <br /> MW1 09/10/02 638 1750 -11 12 000 -- -- -- -- -- <br /> MW l 12/18/02 638 1726 -1088 000 -- -- -- -- -- -- <br /> MW I 03/24/03 638 1695 -1057 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW 1 06/11/03 638 16 91 -1053 000 -- -- -- -- -- -- <br /> MW1 09/17/03 638 1823 -1185 000 -- -- -- -- -- -- <br /> MW 1 12/08/03 638 1829 -1191 000 -- -- -- -- -- -- <br /> MW 1 03/02/04 638 1675 -1037 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW1 06/28/04 638 1791 4153 000 -- -- -- -- -- -- <br /> MWI 09/27/04 638 1868 -1230 000 -- -- -- -- -- -- <br /> MW2 01/87 877 -- -- -- 26 190 -- 1,100 11,000 -- <br /> MW2 07/16/87 877 1880 -1003 000 68 26 630 1,320 4,800 -- <br /> MW2 04/11/88 877 2189 -13 12 0 00 94 <20 240 880 11,000 -- <br /> MW2 09/13/88 877 2432 -1555 000 600 62 520 1,900 7,400 -- <br /> MW2 11/16/88 877 2447 -1570 000 840 140 650 1,600 10,000 -- <br /> MW2 02/09/89 877 2902 -2025 000 480 55 660 1,700 7,200 -- <br /> MW2 05/31/89 877 2569 -1692 000 680 62 800 3,100 17,000 -- <br /> MW2 08/17/89 8 77 2733 -1856 000 2,100 430 350 1,700 15,000 -- <br /> MW2 12/19/89 877 2768 -1891 000 -- -- -- -- -- <br /> MW2 877 Well dry since 03/21/90 <br /> MW2 05/11/95 877 24 19 -1542 000 34 41 83 1,000 5,200 -- <br /> MW2 08/24/95 877 2280 -1403 000 80 <5 0 150 130 2,800 -- <br /> MW2 10/19/95 877 2599 -1722 000 24 <5 0 48 13 1,300 <25 <br /> MW2 02/13/96 877 2384 -1507 000 49 <2 5 65 17 1,300 -- <br /> MW2 04/18/96 877 2098 -1221 000 -- -- -- -- -- <br /> MW2 08/08/96 877 2275 -1398 000 19 <0 5 41 11 490 6 8 <br /> MW2 11/04/96 877 2277 -14 00 0 00 25 <0 5 65 14 810 21 <br /> MW2 02/03/97 877 1861 -9 84 000 -- -- -- -- -- -- <br /> MW2 05/08/97 749 1825 -1076 000 12 <0 5 1 1 <0 5 73 <2 5 <br /> MW2 08/26/97 749 2003 -1254 000 -- -- -- -- -- -- <br /> MW2 11/11/97 749 2056 -1307 000 3 2 <0 5 3 4 071 160 5 2 <br /> g 1pmjects173942UnasteAwp1g090411942gw As Page 5 of 56 <br />