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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration /L <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW12 11/18/98 875 1810 -935 000 <br /> MW12 03/30/99 875 1630 -755 000 -- ._ __ -- -- <br /> MW12 <br /> _MW12 05/05/99 875 1644 -769 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> MW12 08/20/99 8 75 -- __ __ <br /> MW12 12/06/99 875 <br /> MW12 02/29/00 875 -- -- -- <br /> MW12 <br /> _MW12 05/16/00 875 1628 -753 000 <br /> MW12 09/11/00 875 -- __ -- <br /> MW12 <br /> _MW12 12/13/00 875 -- -_ -- <br /> MW12 <br /> _MWl2 03/08/01 875 1730 -855 000 <0 5 <0 5 <0 5 45 <50 <0 5 <br /> MW12 06/21/01 875 1862 -987 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW12 09/20/01 875 1985 -11 10 000 -- -- __ <br /> MW12 I2/04/01 775 1966 -1191 000 <br /> MW12 03/05/02 775 -- -_ -- -- -- -- h <br /> MW12 06/11/02 775 <br /> MW12 09/10/02 775 Not Accessible <br /> MW12 12/18/02 775 Not Accessible <br /> MW12 03/24/03 775 Not Accessible -- __ -- <br /> MW12 <br /> _MW12 06/11/03 775 1995 -1220 0 00 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW12 09/17/03 775 Not Accessible __ _. -- <br /> MW12 <br /> _MW12 12/08/03 775 Not Accessible <br /> MW12 03/02/04 775 Not Accessible <br /> MW12 06/28/04 775 Not Accessible — ._ _ <br /> MW 13 05/18/93 949 3375 -2426 000 1 1 <0 5 <0 5 <1 71 <br /> MW 13 08/22/93 949 3505 -2556 000 <0 5 <0 5 <0 5 <0 5 <50 <br /> MW 13 12/30/93 949 3329 -23 80 000 <0 5 <0 5 <0 5 <0 5 <50 <br /> MW 13 02/17194 949 3273 -2324 000 23 <0 5 <0 5 05 <50 <br /> MW 13 05/I0/94 949 3200 -2251 000 1 1 <0 5 <0 5 <0 5 110 -- <br /> MW 13 08/02/94 949 3330 -2381 000 13 68 59 35 620 -- <br /> MW 13 11/01/94 9 49 3397 -2448 000 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> MW 13 02/17/95 949 31 76 -2227 000 <0 5 <0 5 <0 5 <0 5 <50 -- <br /> g 1profects1739421master1wp1g070413942gw xls Page 26 of 54 <br />