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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHING AVENUE,STOCKTON,CALIFORNIA <br /> Casing Depth Groundwater LPH Concentration <br /> Well Elevation to Water Elevation Thickness Ethyl- <br /> Number Date feet) feet feet feet Benzene Toluene benzene Xylenes TPH-g MTBE <br /> MW5 03/08/01 863 17 12 -849 000 <0 5 <0 5 <0 5 <0 5 <50 <0 5 <br /> MW5 06/21/01 863 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 13 <50 <0 5 <br /> MW5 12/04/01 858 1939 -1081 000 <0 5 <0 5 <0 5 <0 5 <50 <5* <br /> MW5 03/05/02 858 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 /> MWS 12/18/02 158 1999 -1141 000 <0 5 <0 I <0 5 <0 5 <50 h <0 5 <br /> MW5 03/24/03 858 1950 -1092 000 -- -- -- -- -- `- <br /> MW5 03/25/03 858 -- -- -- 2 10 <0 5 <0 5 <0 5 <50 h <0 5 <br /> i <br /> MW5 06/11/03 858 1960 -1102 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 09/17/03 858 2094 -1236 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 12/08/03 858 2097 -1239 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 03/02/04 858 1950 -1092 0 00 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 06/28/04 858 2064 -1206 000 -- -- -- -- -- -- <br /> MW5 06/29/04 8 58 -- -- -- <0 5 15 <0 5 0 9 <50 h <0 5 <br /> MW5 09/27/04 858 2147 -1289 000 -- -- -- -- -- -- <br /> MW5 09/28/04 858 -- -- -- <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 12/01/04 858 2122 -1264 000 -- -- -- -- -- -- <br /> MW5 12/02/04 8 58 -- -- -- <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 04 -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 -- <br /> MW6 11/16/88 892 2551 -1658 001 19,000 19,000 3,000 12,000 83,000 -- <br /> MW6 02/09/89 892 2485 -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 0 00 16,000 15,000 2,900 19,000 98,000 -- <br /> MW6 12/19/89 892 28 80 -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 /> MW6 10119195 892 Well dry -- -- -- <br /> Page 13 of 56 <br /> g Vprojects173942Lnasterlwp\gl20413942gw xis <br />