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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-E MTBE <br /> MW3 12/08/03 851 2094 -1243 0 00 570 61 90 11 1 1,270 h 163 <br /> MW3 12/08/03 851 <0 5* <br /> MW3 03/02/04 851 1945 -1094 000 680 4 4 104 9 7 940 h 224 <br /> MW3 03/02/04 8 51 <0 5* <br /> MW3 06/28/04 851 20 61 -12 10 000 -- -- -- -- -- -- <br /> MW3 06/29/04 851 -- -- -- 830 4 2 10 0 9 7 1,280 h 125 <br /> MW3 06/29/04 851 <0 5* <br /> MW3 09/27/04 851 2146 -1295 000 -- -- -- -- -- -- <br /> MW3 09/28/04 851 -- -- -- 890 113 6 7 156 1,000 h 9 4 <br /> MW3 09/28/04 851 <0 5* <br /> MW3 12/01/04 851 21 12 42 61 000 -- -- -- -- -- -- <br /> MW3 12/02/04 111 -- -- -- 5 60 4 6 101 9 2 1,090 h 121 <br /> MW3 12/02/04 851 <0 5* <br /> MW3 03/24/05 851 1926 -1075 000 770 3 6 81 6 4 1,250 h 63 <br /> MW3 03/24/05 851 <0 5* <br /> MW4 07/16/87 8 13 18 I5 -1002 000 1,100 <50 850 1,750 4,900 -- <br /> MW4 04/11/88 8 13 2123 -13 10 000 510 <25 490 1,100 8,500 -- <br /> MW4 09/13/88 8 13 2366 -15 53 000 860 40 670 2,400 5,600 -- <br /> MW4 11/16/88 8 13 2381 -1568 000 860 340 810 1,000 8,000 -- <br /> MW4 02/09/89 8 13 23 55 -1542 000 630 20 530 650 4,800 -- <br /> MW4 05/31/89 8 13 2501 -1688 000 790 35 720 1,300 6,000 -- <br /> MW4 08/17/89 8 13 2650 -1837 000 1,000 45 940 1,100 8,100 -- <br /> MW4 12/19/89 8 13 2757 -1944 000 190 2,800 1,100 380 7,900 -- <br /> MW4 03/21/90 8 13 2806 -1993 000 400 6 8 340 160 3,200 -- <br /> MW4 05/17/90 8 13 2887 -2074 0 00 300 40 150 93 3,500 -- <br /> MW4 01/28/92 813 Dry -- -- -- -- -- <br /> MW4 04/30/92 8 13 2953 -2140 000 -- -- -- -- -- -- <br /> MW4 08/13/92 813 Dry -- -- -- -- -- -- <br /> MW4 10/08/92 813 Dry -- -- -- -- -- <br /> MW4 02/23/93 8 13 2912 -2099 000 -- -- -- -- -- -- <br /> MW4 05/18/93 813 -- -- -- -- <br /> MW4 08/22/93 8 13 28 04 -1991 000 -- -- -- -- -- <br /> MW4 12/30/93 8 13 2785 -1972 000 -- -- -- -- -- -- <br /> MW4 02117194 8 13 2749 -1936 000 -- -- -- -- -- <br /> g 1prolecls1739421masterlwplg030513942gw xls Page 9 of 57 <br />