Laserfiche WebLink
North Pit Reclamation <br />Coal stripping occurred at this location during the operation of the Cazbon Junction Mine. <br />Current disturbance consists of the exposed sandstone layer forming the base of the coal <br />seam that was mined, a relatively flat bench azea, and adjacent downspoiled fill below the <br />bench. <br />Reclamation of the North Pit involves the following tasks: <br />1) Returning as much downspoiled fill as possible from the slope below to the North Pit <br />bench area. Downspoiled material will be used to partially backfill the bench area and <br />sandstone scarp. A lazge tracked excavator will be employed for this task, sited on the <br />bench or on an intermediate bench below the main bench. <br />2) Moving the recovered spoiled fill material and side cut to the base of the bench <br />adjacent to the sandstone at the inside edge of the bench using a bulldozer and/or the <br />tracked excavator. <br />3) Moving all boulders and cobble material from the bench area to the inside edge of the <br />bench prior to remaining backfilling. This will be done with a bulldozer and/or a tracked <br />excavator. <br />4) Recovering the remaining needed fill from the Permanently Reclaimed Spoils Area <br />below the North Pit. Backfilling will leave a 30 foot wide bench and backfill the <br />sandstone scarp to a grade of 3H:1V (see Cross-Section Map). This task will be <br />undertaken with afront-end loader and dump truck team. The upper segment of the <br />sandstone scarp cannot be backfilled at this grade and will remain as it currently exists. <br />5) Regrading the North Pit bench fill to final contour with a bulldozer. <br />6) Loading and hauling topsoil from Topsoil Stockpile #2 to cover the entire North Pit <br />bench fill area with eight to twelve inches of topsoil. <br />7) Regrading and spreading of the topsoil. Some topsoil will be spread over the bench <br />outslope to cover downslope spoil that could not be retrieved with the tracked excavator. <br />8) Seeding, planting and mulching the North Pit area as described in the revegetation <br />plan. <br />North Pit Backfill and Retopsoiling Calculations <br />The following calculations for cuts and fills were made by gridding the existing and final <br />surfaces in Survcadd. <br />TRO8, TRl1(v1.0) 5-24 Revised 9/97, 08/02 <br />