2017-08-14_PERMIT FILE - M2017032

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EXHIBIT L RECLAMATION COSTS 7'hr, following information depicts a worse case scenario when it would be most expensive to reclaim the site . This is an attempt to set the bond so there is flexibility to operate the mine without reevaluating the bond yearly. This reclamation cost estimate in based on the assumption that there will be no more than 11 . 90 acres + needing reclamation at any one time . This will involve spreading 11, 500 cubic yards of soil on the revegetation area . The remaining 28 . 07 acres will be industrial area, roads, undisturbed area or lake area . While the plan is to grade the final lake slopes as mining progresses we expect to have no more then 350 linear feet of sloping that would need to be done to complete reclamation . Due to the depth of the lake this would involve pushing approximately 2015 . 2 cy of dirt into the lake to create the 3 : 1 slope along the working face . No additional material would need to be imported since the material would come from the area above the working face as described in the reclamation plan . The amount of soil that will be re-spread averages 6 inches . Our co:;t estimate to do all of the shaping and soiling in this cost estimate is based on using a D-6T dozer for the cut/fill work and for recoiling and a 140G motor grader to prepare the seedbed and graded the industrial area . The actual equipment used by the permittee may differ . The revegetation cost figure includes grass seed, mulch, chemical fertilizer (ammonium nitrate & superphosphate) and seeding costs . The mobilization number is for a round trip from the Rocky Ford area (2 miles one way. ) Description Acres ± Mining area Plant Site Totals Recoiling 11 . 92 0 11 . 9 Revegetat=ion 11 . 92 C 11 . 92 Cradling & Shaping L1 . 92 10. 90 22 .82 Recoiling 11 . 92 0 11. 92 I,'a,-:e lenath 350 ft. 0 ;u'../ri.11 Volume 5 .76 cy/lft RF:c l l l n._3 c:epth 6 inches 62