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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 __. (feet) Toluene benzene Xylenes Date {feet msl) {feet} (feet msl) feet Benzene Tnes TPH-g MTBE- ..,, <br /> MW L 08/13/92 776 2985 -22 09 000 <br /> 10/08/92 776 Dry <br /> 02/23/93 776 2855 -2079 000 -- -- -- -- <br /> 05/18/93 776 27 12 -1936 000 19 <0 5 28 1 8 950 -- <br /> 08/22/93 776 2734 -1958 000 89 <0 5 <0 5 <0 5 710 -- <br /> 02/30/93 776 2678 -1902 000 1 2 <0 5 19 7 7 390 -- <br /> 02/17/94 776 2647 -1871 000 <0 5 13 <0 5 <0 5 130 -- <br /> 05/10/94 776 26 12 -1836 000 <0 5 13 0 6 0 6 510 -- <br /> 08/02/94 776 2759 -1983 000 <0 5 3 5 17 5 2 780 11/01/94 776 2794 -20 18 000 <0 5 <0 5 10 2 0 400 -- <br /> 02/17/95 776 2535 -1759 000 <0 5 0 98 1 1 1 1 480 -- <br /> 05/11/95 776 2272 -1496 000 <0 5 <0 5 <0 5 <0 5 130 -- <br /> 08/24/95 776 24 03 -1627 000 <0 5 <0 5 <0 5 <0 5 140 -- <br /> 10/19/95 776 2461 -1685 000 <05 <05 <05 <05 210 <25 <br /> 02/13/96 776 2243 -14 67 000 <0 5 <0 5 <0 5 <0 5 190 -- <br /> 04/18/96 776 2004 -1228 000 <0 5 <0 5 <0 5 <0 5 63 <2 5 <br /> 08/08/96 776 2132 -1356 000 -- -- -- -- -- <br /> 11/04/96 776 2177 -14 01 000 <0 5 <0 5 <0 5 <0 5 120b <2 5 <br /> 02/03/97 776 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 /> 08/26/97 643 1858 -12 15 000 -- -- -- -- -- <br /> 11/11/97 <br /> -11/11/97 643 19 15 -1272 000 -- -- -- -- -- -- <br /> 03/03/98 643 1330 -687 000 -- -- -- -- -- -- <br /> 05/20/98 643 1348 -705 000 -- -- -- -- -- -- <br /> 08/19/98 6 43 1492 -849 000 -- -- -- -- -- -- <br /> 11/18/98 6 43 1534 -8 91 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> 03/30/99 643 -- -- -- -- -- -- -- -- <br /> 05/05/99 643 13 88 -745 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> 08/20/99 643 1526 -883 000 -- -- -- -- -- <br /> 12/06/99 643 1542 -899 000 -- -- -- -- -- -- <br /> 02/29/00 643 -- -- -- <br /> 05/16/00 643 13 19 -676 000 -- -- -- -- -- <br /> 09111100 643 1544 -901 000 <05 <05 <05 071 <50 <05 <br /> g'propectsW3942Vmasterl"j)%g60I\3942gw As Page 3 of 37 <br />