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EXHIBIT L WORST CASE RECLAMATION SCENARIO <br /> The worst case reclamation scenario at the 5 Mile Pit will be when the greatest backfill is required <br /> and the greatest dewatering is necessary to install said backfill. This will be at some point during <br /> the mining of Phase 1. The backfill quantity is limited by a combination of the county permit(no <br /> more than 1000 feet of unbackfilled mining slope) and the maximum depth of the final lake. This <br /> can be found in Phase 1. The lake area at this point will be 7.3 acres. <br /> l. Dewatering 7.3 acre lake that is 12 feet deep on average. 87.6 ac-ft @ $75/ac-ft=$6,570 <br /> 2. Backfill to the lake level to close off exposed groundwater. 87.6 ac-ft= 141,328 CY. <br /> 141,328 CY @ $1.50/CY to haul and place = $211,992 <br /> 3. Backfilling 1000 feet of 1.5H:1 V mining slope to 3H:1 V for a highwall height of 10 feet. <br /> 2,700 CY at $1.50/CY to haul and place = $4,050 <br /> 4. Backfill and grade detention pond. 6,200 CY @ $1.50/CY to haul and place = $9,300 <br /> 5. Rip road areas in preparation for topsoiling. 4 acres @ $250/ac. _ $1,000 <br /> 6. Replace topsoil on all disturbed areas. Assuming all areas disturbed except for Phases 2 and <br /> 3. 25.6 acres to a depth of 12 inches. 41,301 CY @ $1.50 CY to haul and place =$61,952 <br /> 7. Remove all facilities and equipment. $5,000 <br /> 8. Seeding and mulching all areas above water line. 25.6 acres @ $700/acre= $17,920 <br /> Based on these costs, and a 28% DRMS cost factor, the total bond for the 5 Mile Pit should be <br /> $424,619. <br /> Worst case reclamation costs for this scenario are shown in Table L-1 below: <br /> 5 Milc Pit March 2016 L-1 <br />