Laserfiche WebLink
RECLAMATION COST ESTIMATE <br />(MAXIMUM DISTURBANCB 50.0 AC t) <br />This estimate is based on a maximum disturbance of 50 acre <br />3 within in the of permitted area. This reclamation cost esti- <br />mate in based on the conditions that would exist at that time <br />with a commitment to limit the number of benches that would have <br />to be built on the working face; the area needing resoiling & <br />revegetation and commercial area grading. Figure RC-1 shows how <br />the east face would look as mining progresses to this point. The <br />heavy lines are existing benches and the dashed line are the <br />benches that would have to be constructed. Figures RC-1, RC-2 <br />and RC-3 should be used while reviewing TABLE A. <br />At this point in dune the top of the slope will have moved <br />approximately 200 feet east of where it is now, the north face <br />area will have been mined and a temporary north facing slope will <br />have been mined on the south berm area. There will be 35.81 <br />acres t of commercial area needing only grading and shaping; <br />12.69 acres t needing resoiling and 14.19 acres of revegetation. <br />Since the final reclamation plan calls for grading the floor of <br />the mine as commercial area no topsoilinq and revegetation is <br />necessary on that area. <br />At this point in time the activities that would be necessary <br />to reclaim the mine, are grading and shaping the mine floor, <br />blasting up to 4 benches on the mine face, resoiling the benches <br />with 12 inches of growth medium and seeding the bench surfaces. <br />in addition, the waste rock off the face would be piled and <br />sloped along the base of the east face (toe slope) as the benches <br />are created. Trees would then be planted on the benches. Figure <br />RC-4 shows how we calculated the amount of grading needed to <br />create this toe slope from the rough piles that were created when <br />the material is mined. <br />The south and west aides of the mined area need no further <br />work at this time. The south face (north side of Stage S) is <br />stable according to the Geotechnical Report and the west area is <br />currently benched as required by the Reclamation Plan. <br />No work would be needed in the secondary access corridor <br />since only the road would be in place and the first cut has not <br />take place. The north and south walls will be temporally benched <br />as they are mined. Length of east face will be less than 1635 <br />feet at the top and 1450 on the bottom and no more than 4 total <br />width benches would need to be created if mining ended prema- <br />turely. We have also included hauling costs to remove 35 loads <br />of miscellaneous equipment and scrap from the site and included <br />demolition of 270 sq-ft of concrete pads (30 pads - 1•x3'x10•). <br />Attached are sketch maps created from measurements take off <br />the Mining Plan Map for the east mine face. The east face was <br />broken into two areas for calculating the amount of material that <br />will have to be removed to create the 4 benches. The benches are <br />lettered A thru G in each figure and these designations match <br />those in TABLE A. Figures RC-2 and RC-3 show cross-section views <br />of how the faces would look at that time, when benching is <br />complete and how much material would have to be removed per <br />linear foot for each bench. You can also see how the toe slope <br />will be located on the bottom of the face. Since this toe elope <br />