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TABLE 2 GROUNDWATER MONITORING DATA,FORMER EXXON RS 7-3942,4444 NORTH PERSHTNG AVENUE,STOCKTON,CALIFORNIA <br /> Casting Depth Groundwater LPH Concentration(pg/L) <br /> Well Elevation to Water Elevation Thickness Ethyl- _ <br /> Number Date feet feet feet feet Benzene Toluene benzene Xylenes TPH-g MTBE <br /> I <br /> IWi 03/02/04 6 87 <0 5* <br /> IW 1 06/28/04 687 1859 -1172 000 -- -- -- -- -- -- <br /> IW l 06/29/04 687 -- -- -- 14 3 <0 5 6 4 1 6 1,270 h <0 5* <br /> IW1 09/27/04 687 1941 -12 54 000 -- — _ _ _ _ <br /> IW1 J 09/28/04 687 -- — -- 13 3 <0.5 55 12 1,220 h <0 5* <br /> MWI 01/87 776 -- -- -- <1 <1 -- <1 <50 -- <br /> MW 1 07/16/87 776 -- -- -- <0 5 15 <0 5 <0 50 <100 -- <br /> MW1 04/11/88 776 2051 -12 75 000 <0 5 <0 5 <0 5 <0 5 <100 -- <br /> MW I 09/13/88 776 22 18 -1442 000 19 2 5 <0 5 <0 5 70 -- <br /> MWI 11/16/88 776 2307 -1531 000 <0 5 9 5 <0 5 <0 5 130 -- <br /> MWI 02/09/89 776 2264 -1488 000 17 0 2 0 2 0 6 <250 -- <br /> MW 1 05/31/89 776 2926 -2150 000 <0 5 <0 5 <0 5 08 <250 -- <br /> MW1 08/17/89 776 2597 -18 11 000 <0 5 <0 5 <0 5 <0 5 <250 -- <br /> MW1 12/19/89 776 2922 -2146 000 <0 5 19 <0 5 <0 5 <250 -- <br /> MW 1 03/21/90 776 2746 -1970 000 <0 5 <0 5 0 8 2 9 80 -- <br /> MW 1 05/17/90 776 2824 -2048 000 <0 5 4 5 <0 5 <0 5 120 -- <br /> MW I 09/25/90 776 2959 -2183 000 <0 5 7 0 10 4 7 170 -- <br /> MWI 12/19/90 776 Dry -- -- -- -- <br /> MWi 01/30/91 776 Dry -- -- -- --MWI. 05/02/91 776 Dry -- -- -- -- <br /> MWI 07116-17/91 776 Dry -- -- -- -- -- -- <br /> M W 1 10/15/91 7 76 2995 -22 19 a 000 -- -- -- --MWI. 01/28/92 7 76 2970 -2194 a 000 -- -- -- -- -- -- <br /> MW 1 04/30/92 776 2926 -2150 000 -- -- -- -- -- <br /> MW 1 08/13/92 776 2985 -2209 000 -- -- -- -- -- -- <br /> MW 1 10/08/92 7 76 Dry -- -- -- -- -- <br /> MW 1 02/23/93 776 2855 -2079 000 -- -- -- -- -- -- <br /> MWI 05/18/93 776 27 12 -1936 000 19 <0 5 2 8 1 8 950 -- <br /> MW I 08/22/93 776 2734 -1958 000 89 <0 5 <0 5 <0 5 710 -- <br /> MW1 12/30/93 7 76 2678 -1902 000 12 <0 5 19 7 7 390 -- <br /> MW 1 02/17/94 776 2647 -1871 0 00 <0 5 13 <0 5 <0 5 130 -- <br /> g\projectsk739421maste6wp1g0904\3942gw As Page 3 of 56 <br />