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• 4.1.7 Wells Within the WRN Lease Boundaries <br />Six new wells were drilled in 1997 and a seventh spudded. WRN 3A-4H and WRN 3A-5V <br />were drilled to form cavity #3A. Monitoring wells WRN 97-BG1 and WRN 97-DS2 were <br />drilled at the southern end of the lease on the pad for 3A-4H, to monitor up-dip mining <br />effects near the lease line. WRN 2B-3C was drilled to core and log the Boise Bed, in order <br />to gain information for drilling future production wells. An attempt to drill well WRN 2B-5HR <br />for cavity #26 was not successful due to loss of circulation and plugging problems. Drill <br />pipe, mud motor and directional tool were abandoned and the hole was cemented. WRN <br />1A-5HR was drilled (from the original hole for WRN 2B-5HR well) as a production recovery <br />well for cavity #1A and WRN 1A-4H1 was spudded as the injection well for cavity #1A. <br />• <br />At the end of 1997, production was being sustained from cavity #3A and cavity #4. Cavity <br />#2A was shut-in for high chlorides in 1997. <br />A summary of WRN wells follows: <br />Prior to 1997 15 water monitor wells <br />1 water supply well <br />1 sonar subsidence wells <br />5 shut in production wells <br />1 extensometer well <br />4 production wells <br />During 1997 3 production wells drilled and a fourth spudded <br />2 shut in production wells <br />2 water monitoring wells drilled <br />1 core hole drilled <br />Refer to Table 4-1 for names and description of existing wells. <br />• <br />13 <br />