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i • <br /> TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casting Depth Groundwater LPH Concentration( /L) <br /> Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> V4 05/05/99 822 1595 -772 0 01 -- -- -- -- -- -- <br /> V4 08/20/99 822 1761 -939 000 637 5 14 145 537 190 126 <br /> V4 12/06/99 822 1785 -956 0 10 -- -- -- -- -- -- <br /> V4 02/29/00 822 1525 -699 006 -- - -- - -- <br /> V4 05/16/00 822 1526 -701 0 04 -- -- - - - -- <br /> V4 09/11/00 822 17 59 -933 005 -- -- -- -- - <br /> V4 12/13/00 822 1745 -923 Sheen -- -- -- -- -- -- <br /> V4 03/08/01 822 1662 -840 000 680 36,000 7,700 117,000 320,000 <250 <br /> V4 06/21/01 822 1797 -974 002 -- -- -- -- -- -- <br /> V4 09/20/01 822 1928 -1105 0 01 -- -- -- -- <br /> V4 12/04/01 812 1906 -1094 000 -- -- -- -- -- -- <br /> V4 03/05/02 8 12 1690 -878 000 4,480 17,200 2,800 14,100 50,600 h <25 <br /> V4 06/11/02 8 12 18 51 1039 000 900 19,600 3,420 15,700 99,400 h 100 <br /> V4 06/11/02 812 <50* <br /> V4 09/10/02 8 12 1975 -11 63 Sheen 890 11,000 3,510 16,600 106,000 h <50 <br /> V4 12/18/02 8 12 1948 -1136 000 840 22,900 3,280 16,500 96,200 h 520 <br /> V4 12/18/02 812 <100* <br /> V4 03/24/03 8 12 1890 -1078 000 -- -- -- -- -- -- <br /> V4 03/25/03 812 -- -- -- 700 2,300 3,390 17,100 102,000 h 130 <br /> V4 03/25/03 812 <10* <br /> V4 06/11/03 8 12 19 08 -1096 Sheen 738 22,700 3,340 14,400 87,500 h 838 <br /> V4 06/11/03 812 <5* <br /> V4 09/17/03 8 12 2047 -12 35 000 590 17,800 3,330 14,900 84,500 h 130 <br /> V4 09/17/03 812 <5* <br /> V4 12/08/03 8 12 2046 -1233 001 675 21,000 3,980 16,900 107,000 h <25 <br /> V4 03/02/04 8 12 1894 -1082 000 690 20,000 4,200 18,800 99,700 h 1,100 <br /> V4 03/02/04 812 <25* <br /> a Water in well may be residual water in end cap <br /> b Unidentified hydrocarbons present <br /> c Hydrocarbons ranging from C6-02 identified on the gasoline sample chromatogram <br /> d Analytical results may be incorrect due to possible mislabeling of samples for WB-MW1 and UVB-MW2 Rcsampled on 2 October 1997 <br /> g lprojcc[sti739421i:ias[erlwp1g0304139426*w xis Paj c 51 of 52 <br />