Laserfiche WebLink
All of the areas addressed in this project contained many large concrete building and <br /> beltline foundations and footers. The concrete materials were demolished and hauled to <br /> various locations. The concrete debris generated from the overland conveyor and upper <br /> coal stockpile area was placed at the base of the coal stockpile cut slope. The debris <br /> generated from the lower stockpile area was placed against the cut slope in that area, <br /> located below, and south of, Road A. The debris from the warehouse area was hauled to <br /> the base of the north facing cut slope behind the former location of the thermal dryer <br /> facility. Each area was graded to a geomorphically stable landform. The overland <br /> conveyor corridor was graded to drain water to the south for its entire length. The coal <br /> stockpile areas were graded to eliminate the highwalls, generally resulting in 211:1 V to <br /> 2.5H:1 V slopes. Fill to cover the lower stockpile area was generated by pushing the <br /> outside of Road A down slope over the concrete rubble, thus reducing the road width <br /> from sixty to thirty feet. The warehouse area was graded to drain to the east through a <br /> constructed drainage channel. A limited amount of topsoil was available, so it was <br /> preferentially placed over the upper coal stockpile backfill, on the floor of the lower coal <br /> stockpile area and at the warehouse area. A drainage channel was constructed to convey <br /> water from the upper stockpile to the warehouse drainage system. This rock-lined <br /> drainage is located on the south side of Road A, near the easterly margin of the upper <br /> coal stockpile. <br /> The upper coal stockpile backfill suffered a small slope failure the winter following <br /> reclamation. The failure was apparently caused by water being trapped at the junction of <br /> the base of the cut slope with the backfill material. The failure was excavated in the <br /> summer of 1998, and a rock filled underdrain was constructed. The fill was replaced at <br /> the site of the failure, and the area re-seeded. <br /> The areas affected by this project are privately owned. <br /> 1997 Reclamation Summary <br /> Project Acreage Reclaimed Current Ownership <br /> Tree Planting Project 5,000 * Public <br /> Mine 4 Revegetation Project 12 Public <br /> Warehouse Vicinity <br /> Reclamation 18 Private <br /> Spring Maintenance 0 Public/Private <br /> * Number of trees planted <br /> 1998 <br /> Spring Maintenance. Roadside ditches and associated culverts were cleaned to pass <br /> flows expected during summer thundershowers. Other on site berms and ditches were <br /> maintained as necessary. Repairs were made to a slope failure that occurred at a portion <br /> of the upper coal stockpile backfill. <br /> 11 <br />