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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(µg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (feet insl) (feet) (feet ms]) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW I 08/13/92 776 2985 -2209 000 _- <br /> 10/08/92 Dry <br /> 02/23/93 2855 -2079 000 -- -- -- __ __ <br /> 05/18/93 27 12 -1936 000 19 <0 5 28 1 8 950 -- <br /> 08/22/93 2734 -1958 000 89 <0 5 <0 5 <0 5 710 -- <br /> 12/30/93 2678 -1902 000 1 2 <0 5 19 77 390 -- <br /> 02/17/94 2647 -1871 000 <0 5 13 <0 5 <0 5 130 -- <br /> 05/10/94 26 12 -1836 000 <0 5 1 3 06 06 510 -- <br /> 08/02/94 2759 -1983 000 <0 5 3 5 1 7 52 780 -- <br /> 11/01/94 2794 -20 18 000 <0 5 <0 5 10 20 400 -- <br /> 02/17/95 25 35 -1759 000 <0 5 098 1 1 1 1 480 -- <br /> 05/11/95 2272 -1496 000 <0 5 <0 5 <0 5 <0 5 130 -- <br /> 08/24/95 2403 -1627 000 <0 5 <0 5 <0 5 <0 5 140 -- <br /> 10/19/95 2461 -1685 000 <05 <05 <05 <05 210 <25 <br /> 02/13/96 2243 -1467 000 <0 5 <0 5 <0 5 <0 5 190 -- <br /> 04/18/96 2004 -1228 000 <0 5 <0 5 <0 5 <0 5 63 <2 5 <br /> 08/08/96 2132 -1356 000 -- -- __ __ -- <br /> 11/04/96 2177 -1401 000 <0 5 <0 5 <0 5 <0 5 120b <2 5 <br /> 02/03/97 1700 -924 000 <0 5 <0 5 <0 5 <0 5 82b <2 5 <br /> 05/08/97 643 1680 -1037 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 08/26/97 1858 -12 15 000 -- -- -- _- __ -- <br /> 11/11/97 19 15 -1272 000 <br /> 03/03/98 1330 -687 000 <br /> 05/20/98 1348 -705 000 <br /> 08/19/98 1492 -849 000 -- -- -- -- __ -- <br /> 11/18/98 1534 -891 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 03/30/99 -- -- -_ __ __ __ __ __ <br /> 05/05/99 13 88 -745 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> 08/20/99 1526 -8 83 000 -- -- -- -- __ -- <br /> 12/06/99 1542 -899 000 <br /> 02/29/00 -- -- -- <br /> 05116100 13 19 -676 000 -- __ __ __ -- <br /> I ipruje�6173942Umasier%wp\g9OGU942bw As Pabe 3 of 37 <br />