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POEM A� IFNNW MEN-001 Mk=■ IMMOM MPM M� M� MWO M� 0 9 0 TABLE I GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA Casing Depth Groundwater LPH Concentration( L) Well Elevation to Water Elevation Thickness Ethyl- Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE MW12 05/11/95 916 2765 -1849 000 <0 5 <0 5 <0 5 <0 5 <50 MW12 08/24/95 9 16 2851 -1935 000 <0 5 <0 5 <0 5 <0 5 <50 -- MW12 10/19/95 916 28 88 -1972 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 02/13/96 9 16 2665 -1749 000 <0 5 <0 5 <0 5 <0 5 <50 MW12 04/18/96 9 16 24 12 -1496 000 -- -- _- MW12 08/08/96 9 16 2493 -1577 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 11/04/96 916 2531 -16 t5 0 00 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 02/03/97 916 2103 -1187 000 -- -- __ -- MW12 _MW12 05/08/97 8 75 2000 -1125 000 MW12 08/26/97 875 2163 -1288 000 -- -- __ __ MW12 11/11/97 875 2228 -13 53 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 03/03/98 875 1705 -830 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 03/03/98 875 <2 0* MW12 05/20/98 875 1623 -748 000 <0 5 <0 5 <0 5 <OS <50 <25 MW12 05/20/98 875 <2 0* MW12 08/19/98 875 17 58 -883 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 08/19/98 875 <2 0* MW12 11/18/98 875 18 10 -935 000 -- -- __ -- MW12 _MW12 03/30/99 875 1630 -755 000 -- __ -- -- MW12 _MW12 05/05/99 8 75 1644 -769 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 MW12 08/20/99 875 -- __ MW12 12/06/99 8 75 MW12 02/29/00 875 -- -- MW12 05/16/00 875 1628 -753 000 MW12 09/11/00 875 -- -- -- MW12 _MW12 12/13/00 875 -- -- __ -- MW12 _MW12 03/08/01 8 75 1730 -855 000 <0 5 <0 5 <0 5 4 5 <50 <0 5 MW12 06/21/01 8 75 1862 -9 87 0 00 <0 5 <0 5 <0 5 <0 5 <50 <0 5 MW12 09/20/01 8 75 1985 -11 10 0 00 -- -- __ -- MW12 _MW12 12/04/01 775 1966 -1191 000 MW12 03/05/02 775 -- -- -- -- -- -- h MW12 06/11/02 7 75 GIProJLcts1739421MASTERIWPIWP030313942gn xls Page 22 of 45