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� >_� � � w �■� � s � i �■ i i i i i i � <br /> 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 <br /> RW4 02/13/96 923 2623 -1700 000 2,200 13,000 2,200 9,700 78,000 -- <br /> 04/18/96 923 23 76 -1453 000 1,900 9,200 2,100 8,400 62,000 <500 <br /> 08/08/96 923 2491 -1568 000 730 2,500 970 2,900 15,000 <125 <br /> 11/04/96 923 25 28 -1605 000 1,600 5,200 1,300 4,900 36,000 <250 <br /> 02/03/97 923 2140 -12 17 000 1,700 6,500 1,900 7,200 42,000 1,300 <br /> 05/08/97 7 86 2005 -12 19 000 540 1,500 720 2,200 16,000 56 <br /> 08/26/97 7 86 2151 -1365 000 98 180 140 340 2,600 56 <br /> 11/11/97 7 86 22 12 -1426 000 260 350 320 570 4,100 98 <br /> 03/03/98 7 86 1685 -899 000 1,500 4,600 2,100 6,000 38,000 1,100 <br /> 03/03/98 7 86 <67* <br /> 05/20/98 7 86 1611 -825 000 450 460 600 890 7,400 400 <br /> 05/20/98 7 86 <6 7* <br /> 08/19/98 7 86 1751 -9 65 000 130 240 210 580 3,100 90 <br /> 08/19/98 7 86 <12* <br /> 11/18/98 7 86 1798 -10 12 000 300 480 400 970 5,600 <25 <br /> 03/30/99 7 86 -- -- -- __ -- <br /> 05/05/99 7 86 -- -- -- -- -- -- -- -- <br /> 08/20/99 7 86 -- -- -- -- -- -- -- <br /> 12/06/99 7 86 -- -- _- -- -- -- -_ -- -- <br /> 02/29/00 7 86 -- -- -- -- -- -_ <br /> 05/16/00 786 1520 -734 000 5 6 57 220 363 2,500 21 <br /> 09/11/00 786 1795 -1009 000 5 7 5 8 17 7 7 550 <0 5 <br /> 12/13/00 7 86 17 85 -999 000 5 6 088 17 4 4 820 <0 5 <br /> 03/08/01 7 86 17 10 -924 000 <0 5 1 1 3 5 139 640 5 5 <br /> 06/21/01 7 86 18.33 -10.47 000 3.6 0.81 1.3 2 51 350 6 4 <br /> 06/21/01 786 <5* <br /> piolee6739421nsastcrluplg6olU9421,a xls Page 34 of46 <br />