Laserfiche WebLink
northern portion of the Storage Yard Bench. This berm will be pulled back onto the adjacent <br /> bench and graded flat to eliminate depressions in this area, and to promote sheet flow of <br /> surface water off the bench. <br /> A berm estimated to be 3 feet tall by 5 feet wide by 100 feet in length exists adjacent to the <br /> road leading to the Storage Yard from Mine 1 . This berm will be pulled back onto the adjacent <br /> bench and graded flat to eliminate depressions in this area, and to promote sheet flow of <br /> surface water off the road. <br /> Six (6) contour furrows will be constructed on the bench remnant to contain runoff. These <br /> furrows are described, and will be constructed and paid for, under Task 5, Surface Drainage; <br /> Contour Furrows. <br /> Upon completion of backfilling, grading and drainage construction, the bench remnant shall <br /> be ripped to a depth of eighteen (18) inches. <br /> Task 4d - Mine 1 <br /> Mine 1 is characterized by a discontinuous highwall which serviced the mine entries. Entry <br /> areas will be backfilled with material obtained from road and bench outslopes opposite the <br /> entry areas. The topography is very steep in this location, and the area is prone to <br /> avalanches. Therefore, backfilling of the Mine 1 highwall will be confined to limited areas as <br /> described below. <br /> Reclamation tasks shall be described as if proceeding from south to north along the Mine 1 <br /> highwall cut. <br /> The southern-most entry is open, and may be backfilled with rubbelized debris during Task 2, <br /> Demolition. If the entry has not been completely filled with debris, earthen materials shall be <br /> used to backfill the remainder of the entry. The entry shall be filled from the block wall to the <br /> entrance, and from floor to roof. Extreme care shall be exercised in order that damage to the <br /> block wall not occur. <br /> After the entry is filled, the highwall in this location shall be backfilled to a height of ten (10) <br /> feet. It is estimated that the width of the backfill will be fifteen 0 5) feet. Upon completion, <br /> the slope of the fill shall not be steeper than 1 .5H:1 V. Any debris or rubble to be buried at <br /> this location shall be buried to a minimum depth of four (4) feet during completion of this <br /> Task. <br /> The slope which exists immediately east of this entry shall be graded downslope to the east <br /> at no steeper than 2H:1 V. Any rubble to be disposed of in this location must be covered by <br /> a minimum of four (4) feet of material. <br /> The bulkhead of the next entry north displays the initials "MCCCC". Rubble and debris may <br /> be disposed of between the southern-most entry and this entry against the cut slope. This <br /> area will be backfilled to a height of ten (10) feet, and the backfilled slope will not exceed <br /> 2H:1 V upon completion of operations. Any debris or rubble to be buried at this location shall <br /> be buried to a minimum depth of four (4) feet during completion of this Task. Earthen <br /> 13 <br />