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r + <br /> Page 3 <br /> Bond and Acreage Reduction Submittal <br /> Backfilling of the Lake Emma hole and contouring of the areas disturbed by the <br /> activities listed above according to the reclamation plan was completed in 1991 <br /> and 1992 with the exception of placement of a clay cap over the Lake Emma <br /> collapse area. This work was not completed because of anticipated fill material <br /> settlement. Ice, that was in the hole when it was filled, was expected to melt from <br /> increased ground temperatures, causing a surface subsidence as the fill material <br /> filled the void left by the melted ice. This predicted subsidence has occurred <br /> annually since 1991 and each year, the surface subsidence has been filled back to <br /> grade with material stockpiled for this purpose. When this fill stabilizes, the lake <br /> sediment cap material can be placed for reclamation plan completion. <br /> All contoured areas have been planted with the high altitude seed mix approved for <br /> this area and while establishment of vegetation at this high altitude site has been <br /> slow, it is now fairly well established with minimal signs of erosion. <br /> Remaining reclamation required for this site, includes capping of the subsidence <br /> area with lake sediment material and overburden material after the area ceases to <br /> subside and grade can be established to allow the area to drain towards the former <br /> outlet of Lake Emma. <br /> TERRY TUNNEL <br /> Proposed acreage changes: (see attached land map for detail) <br /> Existing Permit Acreage 7.12 <br /> Permit Area Reduction Proposed 0.00 <br /> Proposed Permit Area 7.12 <br /> Activity: <br /> This site has seasonal access due to its location. During operations, it was used for <br /> a secondary escapeway, ventilation, seasonal usage to take larger supplies and <br /> equipment underground, and for seasonal treatment of mine drainage water. <br /> After active mining stopped in 1991, the area was used similarly until placement of <br /> the tunnel bulkhead in 1994 and subsequent valve closure in 1996 as approved in <br /> TR - 014 and the reclamation plan for the area. In 1996, the area was used for <br /> mixing and pumping of alkaline material into the mine pool through the bulkhead <br /> JR - 019). <br />