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�... � awe iww ■� a■■ �� 1• � � � � TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA Casing Depth Groundwater LPH Concentration Well Elevation to Water Elevation Thickness Ethyl- Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH-g MTBE MW12 10/19/95 916 2888 -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 0 00 -- -- -- --MW12 08/08/96 9 16 2493 -1577 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 11/04/96 9 16 2531 -1615 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 02/03/97 9 16 2103 -1187 000 -- -- -- -- -MW12 05/08/97 875 2000 -1125 000 -- -- -- -- -- MW12 08/26/97 8 75 2163 -1288 0 00 -- -- -- --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 MW 12 03/03/98 875 <2 0* MW12 05/20/98 875 1623 -748 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 MW12 05/20/98 875 <2 0* MW12 08/19/98 875 1758 -8 83 000 <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 03/30/99 875 1630 -7 55 000 -- 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 12/06/99 875 -- -- -- -- -- --MW12 02/29/00 8 75 -- -- -- -- " --MW12 05/16/00 875 1628 -753 000 -- -- -- -- --MW12 09/11/00 875 -- -- -- -- -- "- MW12 12/13/00 875 -- -- -- '- -- --MW12 03/08/01 8 75 1730 -8 55 000 <0 5 <0 5 <0 5 4 5 <50 <0 5 MW12 06/21/01 875 1862 -987 000 <05 <05 <05 <05 <50 <05 MW12 09/20/01 875 1985 -11 10 000 -- -- -- -- -- -- MW12 12/04/01 7 75 1966 -1191 000 -- -- --MW12 03/05/02 775 -- -- -- -- -- -- -" -- h MW12 06111/02 7 75MW12 09/10/02 7 75 Not Accessible -- -- -- -- -' -- MW12 12/18/02 775 Not Accessible -- -- -- -- -- -' MW12 03124/03 775 Not Accessible -- -- -- -- -- -- g 1projects%739421masterlwplg I20413942gw xis Page 26 of 56 A