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TABLE 1 <br /> WELL CONSTRUCTION DETAILS <br /> Cohn Property <br /> 3755 Munford Avenue <br /> Stockton, Callfornal <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 2 585 - 785 --- <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 7.10 81•'S 49:-- 2 60 - 80 --- <br /> MW-5 Dec-00 2845 PVC 80 80 2 60 -80 --- <br /> MW-6 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 Sep-01 2956 PVC 81 81 2 60 - 80 --- <br /> DW --- 2968 --- --- --- --- Open 130-140 --- <br /> PZ-1 a (s) Sep-01 2819 PVC 80 80 2 64 -65 --- <br /> PZ-1a(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-1b (d) Sep-01 2823 PVC 80 80 2 78 - 79 --- <br /> VW-1 Sep-01 PVC 655 655 2 50 -65 ss -L 5.1 <br /> VW-2 Sep-01 PVC 655 655 2 50 -65 sS s- L 7a <br /> VW-3 Sep-01 PVC 655 655 2 50 - 65 SO, -L5--;— <br /> AS-1 Sep-01 2794 PVC 85 85 4 55-70, 75-85 --- <br /> • A5-1 (s) Sep-01 2817 PVC 85 85 4 64 -65 --- <br /> AS-1 (d) Sep-01 2816 PVC 85 85 4 78 - 79 --- <br /> 1 <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 /> I <br /> APEX ENVIROTECH INC <br /> Page 1 to 1 COH01 001 <br />