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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> I <br /> Casing Depth Groundwater LPH Concentration hag/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date (feet) (feet) (feet) (feet) Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW5 08/19/98 863 <2 0* <br /> MW5 11/18/98 863 1798 -935 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MWS 03/30/99 863 -- -- -- _- -- <br /> MW5 05/05/99 863 1641 -778 000 <0 5 <0 5 <0 5 <0 5 <50 <2 0 <br /> MW5 08/20/99 8 63 1787 -9 24 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW5 12/06/99 863 18 16 -953 000 <1 <1 <1 <1 <50 <1 <br /> MW5 02/29/00 863 1559 -696 000 <1 <1 <1 <1 <50 <1 <br /> MW5 05/16/00 863 1566 -703 000 <1 <1 <1 <1 <50 <1 <br /> MW5 09/11/00 863 1801 -938 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW5 12/13/00 863 1795 -932 000 <0 5 <0 5 <0 5 065 190 <0 5 <br /> MW5 03/08/01 863 17 12 -849 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW5 06121/01 863 1846 -983 000 <0 5 <0 5 <0 5 064 <50 <0 5 <br /> MW5 09/20/01 863 1957 -1094 000 052 <0 5 <0 5 1 3 <50 <0 5 <br /> MW5 12/04/01 8 58 1939 -1081 000 <0 5 <0 5 <0 5 <0 5 <50 <5* <br /> MW5 03/05/02 8 58 1860 -1002 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 06/11/02 858 1906 -1048 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 09/10/02 858 2020 -1162 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 12/18/02 858 1999 -1141 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MWS 03/24/03 858 1950 -1092 000 -- -- -- _- -- <br /> MW5 03/25/03 858 -- -- -- 210 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 06/11/03 858 1960 -11 02 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> AIWS 09/17/03 858 2094 .1236 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW6 07/16/87 892 1935 -1043 000 3,100 4,300 1,200 6,600 12,000 -- <br /> MW6 04/11/88 892 23(4 -1367 062 Not sampled-LPH <br /> MW6 09/13/88 892 25 12 -1620 000 19,000 17,000 2,300 12,000 65,000 MW6 11/l6/88 892 2551 -1658 001 19,000 19,000 3,000 12,000 83,000 -- <br /> MW6 02/09/89 892 24 85 -1593 Sheen Not sampled-LPH <br /> MW6 05/31/89 892 2657 -1765 000 20,000 33,000 3,100 23,000 120,000 -- <br /> MW6 08/17/89 892 2836 -1944 000 16,000 15,000 2,900 19,000 98,000 -- <br /> MW6 12/19/89 892 2880 -1988 000 -- -- __ -- <br /> MW6 892 Well dry since 03/21/90 <br /> MW6 05/11/95 892 25 13 -1621 000 48 25 19 56 720 -- <br /> MW6 08/24/95 892 2649 -1757 000 -- -- -- _- _- <br /> b Il)rufeus17394?1nusierlup1y09030942bix xis Page 11 of 47 <br />