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TABLE, 1 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 /> No Date (feet ms1) (feet) (feet msl) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW 1 02/13/96 776 2243 -1467 000 <0 5 <0 5 <0 5 <0 5 190 -- <br /> MW 1 04/18/96 776 2004 -1228 000 <0 5 <0 5 <0 5 <0 5 63 <2 5 <br /> MW 1 08/08/96 776 2132 -1356 000 -- -- -- -- -- -- <br /> M W 1 11/04/96 776 2177 -1401 000 <0 5 <0 5 <0 5 <0 5 120b <2 5 <br /> MW 1 02/03/97 776 1700 -924 000 <0 5 <0 5 <0 5 <0 5 82h <2 5 <br /> M W I 05/08/97 643 1680 -1037 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> M W i 08/26/97 643 1858 -12 15 000 -- -- -- -- -- -- <br /> M W 1 11/11/97 643 19 15 -12 72 000 -- -- -- -- -- <br /> MW 1 03/03/98 6 43 13 30 -687 000 -- -- -- -- -- <br /> M W I 05/20/98 643 1348 -705 000 -- -- -- -- -- <br /> MW 1 08/19/98 643 1492 -849 000 -- -- -- -- -- <br /> M W 1 11/18/98 643 1534 -8 91 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> M W 1 03/30/99 6 43 -- -- -- -- -- -- -- -- -- <br /> M W 1 05/05/99 643 13 88 -745 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> M W I 08/20/99 643 1526 -8 83 000 -- -- -- -- -- -- <br /> MW I 12/06/99 643 1542 -899 000 -- -- -- -- -- <br /> MW 1 02/29/00 643 -- -- -_ <br /> M W I 05/16/00 643 13 19 -676 000 -- -- -- -- -- -� <br /> MW 1 09/11/00 643 1544 -901 000 <0 5 <0 5 <0 5 071 <50 <0 5 <br /> M W 1 12/13/00 643 15 38 -895 000 <0 5 <0 5 <0 5 071 <50 <0 5 <br /> M W 1 03/08/01 643 -- -- -- -- -- -- -- -- -- <br /> M W 1 06/21/01 643 15 86 -943 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> ill W 1 09/20/01 643 1693 -10.50 000 -- -- -- __ <br /> MW2 01/87 877 -- -- -- 26 190 -- 1,100 11,000 -- <br /> MW2 07/16/87 877 18 80 -1003 000 68 26 630 1,320 4,800 -- <br /> MW2 04/11188 877 21 89 -13 12 000 94 <20 240 880 11,000 -y <br /> w <br /> r kpraju ts1739421masterl%Np�gM\3942gw xis Page 4 of 47 <br />