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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 msl) (feet) (feet ms]) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE i <br /> MW4 03/08/01 7 18 1549 -831 000 <0 5 <0 5 <0 5 <0 5 280 24 <br /> MW4 06/21/01 718 1682 -9 64 000 <0 5 <0 5 <0 5 <0 5 200 30 <br /> MW4 06/21/01 718 32* <br /> MW4 09/20/01 7 18 1796 -1078 000 <0.5 076 <0 5 191 270 36 <br /> NIW4 09/20/01 718 40* <br /> MW5 07/16/87 9 58 1669 -711 000 <10 480 280 1,390 2,200 -- <br /> MW5 04/11/88 9 58 22 86 -13 28 000 <2 0 25 25 85 500 -- <br /> MW5 09/13/88 9 58 25 33 -15 75 000 4 4 650 50 110 1,400 -- <br /> MW5 11/16/88 9 58 25 31 -15 73 000 <1 3 19 25 24 910 -- <br /> MW5 02/09/89 9 58 2509 -15 51 000 3 4 12 15 22 1,250 <br /> MW5 05/31/89 958 2672 -17 14 000 <0 5 14 24 46 790 - <br /> MW5 08/17/89 958 28 44 -1886 000 10 29 13 12 1,200 , <br /> MW5 12/19/89 9 58 2945 -1987 000 -- -- -- -- _- <br /> MW5 958 Well dry since 03/21/90 <br /> MW5 12/30/93 958 2990 -2032 000 <br /> MW5 02/17/94 958 2954 -1996 000 <br /> MW5 05/10/94 9 58 29 13 -1955 000 -- -- -- -- _7 <br /> MW5 08/02/94 958 Well dry <br /> MW5 11/01/94 958 Well dry <br /> MW5 02/17/95 958 2841 -18 83 000 -- -- -- -- -- __ <br /> MW5 05/11/95 958 25 72 -1614 000 14 1 2 7 5 4 8 350 <br /> MW5 08/24/95 958 23 35 -13 77 000 <0 5 <0 5 072 15 85 -- <br /> MW5 10/19/95 958 2720 -1762 000 <05 <05 11 11 85 <25 <br /> MW5 02/13/96 958 Well dry -- -- -- -- -- -- <br /> MW5 04/18/96 9 58 22 00 -1242 000 <0 5 <0 5 <0 5 068 65 <2 5 <br /> MW5 08/08/96 9 58 2422 -1464 000 -- -- -- -- -_ <br /> I <br /> } <br /> pio]CLn173942lniaslerlu;)1y901V3942btti xls Page I 0l d7 <br />