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TABLE 1 <br /> WELL CONSTRUCTION DETAILS <br /> Cohn Property <br /> 3755 Munford Avenue <br /> {� Stockton, Califomai <br /> Well Total Casing Filter Pack <br /> Well Installation Elevation Casing Depth Well Depth Diameter Screened Interval <br /> Number Date TOC (feet) Material (feet) (feet) (inches) Interval (feet) (feet) <br /> MW-1 Nov-98 2888 PVC 7850 7850 2 58 5-78 5 -- <br /> MW-2 Nov-98 2804 PVC 7850 7850 2 585-785 -- <br /> MW-3 Nov-98 2841 PVC 7850 7850 2 585-785 -- <br /> MW-4 Dec-00 2929 PVC 78 50F$ ,t5�5 80 2 60-80 — <br /> MW-5 Dec-00 2845 PVC 80 80 2 60-80 — <br /> MW-0 Dec-00 2875 PVC 80 80 2 60-80 — <br /> MW-7 Dec-00 2810 PVC 80 80 2 60-80 -- <br /> MW-8 Dec-00 2787 PVC 100 100 2 85- 100 — <br /> MW-9 Sep-01 2796 PVC 81 81 2 60-80 — <br /> MW-10 Sep41 2956 PVC 81 81 2 60-80 — vm <br /> MW-11 Feb-06 2800 PVC 88 88 2 83-88 81 -8eq <br /> MWA2 Jr 9,4e 06 2819 PVC 92 92 2 87-92 85-92- <br /> MW-13 <br /> 5-92- <br /> MW-13 Feb-06 2831 PVC 110 110 2 105- 110 103- 110 <br /> MW-14 Feb-06 2832 PVC 146 146 2 141 - 146 139- 146 <br /> old DW - 2968 --- — — — Open 130-140 — <br /> PZ-1a (s) Sep-01 2819 PVC 80 80 2 64-65 — <br /> PZ-1 a(d) Sep-01 2809 PVC 80 80 2 78-79 — <br /> PZ-1 b(s) Sep-01 2825 PVC 80 80 2 61 -62 — <br /> PZ-1 b (d) Sep-01 2823 PVC 80 80 2 78-79 — <br /> VW-1 Sep-0i PVC 655 655 2 50-65 — <br /> VW-2 Sep-01 PVC 655 655 2 50-65 <br /> VW-3 Sep-01 PVC 655 655 2 50-65 — <br /> AS-1 Sep-01 2794 PVC 85 85 4 55-70, 75-85 -- <br /> AS-1 (s) Sep-01 2817 PVC 85 85 4 64-65 — <br /> AS-1 (d) Sep-01 28 16 PVC 85 85 4 78-79 — <br /> Notes <br /> —= Information could not be found DW -Domestic Well <br /> TOC =Top of Casing VW -Vapor well <br /> PVC = Polyvinyl Chloride AS -Air Sparge <br /> PZ= piezometer -Destroyed Late 2004 <br /> APEX ENVIROTECH INC <br /> Page 1 to 1 COH58 001 <br />