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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(ttg/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 06/28/04 858 2064 -1206 000 -- -- -- -- -- -- <br /> MW5 06/29/04 858 -- -- -- <0 5 15 <0 5 0 9 <50 h <0 5 <br /> MW5 09/27/04 8 58 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 8 58 2122 -1264 000 -- -- -- -- -- <br /> MW5 12/02/04 8 58 -- -- -- <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 03/24/05 858 1931 -1073 000 <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 06/22/05 858 1928 -1070 000 -- -- -- -- -- -- <br /> MW5 06/23/05 858 -- -- -- <0 5 <0 5 <0 5 <0 5 <50 h <0 5 <br /> MW5 10/12/05 8 58 2061 -1203 000 <0 5 <0 5 <0 5 <0 5 <50 h <2 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 2304 -1367 0 62 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 0 01 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 -17 65 000 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 /> MW6 10/19/95 892 Well dry -- -- -- -- -- -- <br /> MW6 02/13/96 892 Well dry -- -- -- -- -- _- <br /> MW6 04/18/96 892 Well dry -- -- -- -- -- <br /> MW6 08/08/96 892 Well dry -- -- -- -- -- -- <br /> MW6 11/04/96 892 Well dry -- -- -- -- -- -- <br /> MW6 02/03/97 892 Well dry -- -- -- -- -- -- <br /> MW6 05/08/97 748 Well dry -- -- -- -- -- -- <br /> MW6 08/26/97 748 Well dry -- -- -- -- -- -- <br /> MW6 11/11/97 748 Well dry -- -- -- -- -- -- <br /> MW6 03/03/98 748 1555 -807 000 <0 5 <0 5 <0 5 <0 5 <50 <2 5 <br /> MW6 03/03/98 748 <2 0* <br /> g 1projects1739425masterlwplgl005\3942gw xis Page 14 of 59 <br />