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wiw ■■� w ■■w ww w■ ww ww ww ww >! J•l w� �w w w TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA Casing Depth Groundwater LPH _ Concentration(µg/L) Well Elevation to Water Elevation Thickness Ethyl- Number Date (feet) feet feet feet Benzene Toluene benzene Xylenes TPH- MTBE MW6 12/06/99 748 1370 -622 000 <1 <1 <1 <1 <50 <1 MW6 02/29/00 748 1496 -748 000 <1 <1 <l <1 <50 <1 MW6 05/16/00 748 1478 -730 000 <1 <1 <1 <1 <50 <1 MW6 09/11/00 748 17 18 -970 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 MW6 12/13/00 748 1705 -957 000 <0 5 <0 5 <0 5 <0 5 140 <0 5 MW6 03/08/01 748 1627 -879 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 MW6 06/21/01 748 1272 -524 000 <0 5 056 <0 5 <0 5 <50 <0 5 MW6 09/20/01 748 1875 -1127 000 -- -- -- -- -- -- MW6 12/04/01 744 18 55 -11 11 000 -- -- -- -- -- -- MW6 03/05/02 744 1750 -1006 000 <0 5 070 <0 5 <0 5 <50 h <0 5 MW6 g 06/11/02 744 1833 -1089 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MW6 09/10/02 744 Well dry -- -- -- -- -- -- MW6 12/18/02 744 Well dry -- -- -- -- -- MW6 03/24/03 744 1625 -881 000 -- -- -- -- -- -- MW6 06/11/03 744 1875 -1131 000 -- -- -- -- -- -- MW6 09/17/03 744 Well dry -- -- __ -- -- _- MW6 12/08/03 744 Well dry -- -- -- -- -- -- MW6 03/02/04 744 Well dry -- -- -- -- -- -- MW6 06/28/04 744 Well dry -- -- -- -- _- -- MW6 09/27/04 744 Well dry -- -- -- -- --MW6 12101/04 744 Well dry -- -- -- -- -- -- MW6 03/24/05 744 1848 -1104 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 MW6 06/22/05 744 1851 -1107 000 -- -- -- -- -- — MW6 g 06/23/05 7.44 -- -- -- <0 5 <0 5 <0 5 <0.5 <50 h <0 5 MW7 07/16/87 835 18 11 -976 000 78 35 32 678 1,000 -- MW7 04/11/88 835 2121 -1286 000 26 <2 0 10 <40 1,200 -- MW7 835 Well dry since 07/12/88 MW7 835 Not accessible since 12/30/93 MW7 05/11/95 8 35 Well dry -- -- -- -- -- MW7 08/24/95 835 Well dry -- -- -- -- -- -- MW7 10/19/95 835 Well dry -- -- -- -- -- -- MW7 02/13/96 835 Well dry g lprojects17394217nasterlwp\g06D53942gw xls Page Y5 of 59