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wi � w■� w■� �w �w w w■� � i � l• wi �l■w � w <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 /> j Well Elevation to Water Elevation Thickness Ethyl- <br /> No Date (feet rnsl) (feet) (feet msl) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> V4 11/11/97 822 2134 -13 12 Sheen <br /> 03/03/98 822 1567 -744 001 <br /> 05/20/98 822 1562 -735 007 <br /> 08/19/98 822 17 19 -887 0 13 <br /> 11/18/98 822 1753 -924 009 <br /> 03/30/99 822 -- -- -_ <br /> 05/05/99 822 15 95 -772 001 -- -- __ -- <br /> __ __ <br /> 08/20/99 822 1761 -939 000 63 7 5 14 14 5 5 37 190 12 6 <br /> 12/06/99 822 1785 -956 0 10 -- -- -- __ __ -- <br /> 02/29/00 822 1525 -699 006 <br /> 05/16/00 822 1526 -701 004 <br /> 09/11/00 822 1759 -933 005 <br /> 12/13/00 822 1745 -923 Sheen -- -- -- __ -- <br /> 03/08/01 822 1662 -840 000 680 36,000 7,700 117,000 320,000 <250 <br /> 06/21/01 822 1797 -9 74 002 -- -- _- -_ -_ <br /> UVB-MW1 02/28/97 742 1867 -- 000 7,200 18,000 2,000 11,000 99,000 1,100 <br /> 05/08/97 742 1876 -1134 000 5,900 15,000 1,800 9,000 86,000 1,600 <br /> 05/08/97 742 <200* <br /> 08/26/97 d 742 2050 -1308 000 700 18 19 42 2,400 77 <br /> 10/02/97 742 -- -- -- 1,200 1,400 240 2,400 17,000 300 <br /> 11/11/97 742 21 10 -1368 000 9,400 16,000 2,300 11,000 91,000 2,200 <br /> 11/11/97 742 <200* <br /> 03/03/98 742 15 55 -8 13 000 13,000 36,000 3,600 18,000 140,000 3,200 <br /> 03/03/98 742 <200* <br /> 05/20/98 742 1523 -7 81 000 12,000 32,000 3,500 19,000 140,000 3,300 <br /> 05/20/98 742 <133* <br /> o}piojccts1739421master\itipVg60113942gw As Page 43 of 46 <br />