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�� www w�� ww�i �� w■� ■�■� ■w� �w� i �■ � � � � � � � TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE, STOCKTON,CALIFORNIA Casing Depth Groundwater LPH Concentration(ggIL) Well Elevation to Water Elevation Thickness Ethyl- Number Date (feeq (feet) (feet) (feet) Benzene Toluene benzene _ Xylenes TPH:g- MTBE MW1 12/04/01 638 1671 -1033 000 -- -- -- -- -- -- MW 1 03/05/02 638 1600 -962 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MW 1 06/11/02 638 1649 -10 11 000 -- -- -- -- -- MW 1 09/10/02 638 1750 -11 12 000 -- -- -- -- -- -- MW I 12/18/02 638 1726 -1088 000 -- -- -- -- -- -- MW 1 03/24/03 638 1695 -1057 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MW 1 06/11/03 638 1691 -1053 000 -- -- -- -- -- -- MW 1 09/17/03 638 1823 -1185 000 -- -- -- -- MW 1 12/08/03 638 1829 -1191 000 -- -- -- -- -- -- MWI 03/02/04 638 1675 -1037 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MWi 06/28/04 638 1791 -1153 000 -- -- -- -- -- -- MW 1 09/27/04 638 1868 -1230 000 -- -- -- -- -- -- MW I 12/01/04 638 1841 -1203 000 -- -- -- -- -- -- MW1 03/24/05 638 1652 -1014 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MW 1 06/22/05 638 1653 -1015 000 -- -- -- -- -- -- MW1 10/12/05 638 1799 -1161 000 <0.5 <0 5 <0 5 <0 5 <50 h <2 5 MW2 01187 877 -- -- -- 26 190 -- 1,100 11,000 -- MW2 07/16/87 877 1880 -1003 000 68 26 630 1,320 4,800 -- MW2 04/11/88 877 2189 -13 12 000 94 <20 240 880 11,000 -- MW2 09/13/88 877 2432 -15 55 000 600 62 520 1,900 7,400 -- MW2 11/16/88 877 2447 -1570 000 840 140 650 1,600 10,000 -- MW2 02/09/89 877 29 02 -20 25 000 480 55 660 1,700 7,200 -- MW2 05/31/89 877 2569 -1692 000 680 62 800 3,100 17,000 -- MW2 08/17/89 877 2733 -1856 0 00 2,100 430 350 1,700 15,000 -- MW2 12/19/89 877 2768 -1891 0 00 -- -- -- -- -- -- MW2 877 Well dry since 03/21/90 MW2 05/11/95 877 24 19 -1542 000 34 41 83 1,000 5,200 -- MW2 08/24/95 877 2280 -1403 000 80 <5 0 150 130 2,800 -- MW2 10/19/95 877 2599 -1722 000 24 <5 0 48 13 1,300 <25 MW2 02/13/96 877 2384 -15 07 000 49 <2 5 65 17 1,300 -- MW2 04/18/96 877 2098 -1221 000 -- -- -- -- -- -- MW2 08/08/96 877 2275 -1398 000 19 <0 5 4I 11 490 68 g Iprojects1739421masterlwplq 100513942gw xis Page 5 of 58