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RECLAMATION COSTS (CONT)EXHIBIT L <br />mining progresses to limit the amount of final sloping needed. <br />Resoiling and seeding would be required on 38.03 acres, 30 acres <br />stripped and 8.03 bank slope reclamation. The completed slurry <br />wall is 7900 feet long at 38 ft. deep, average. No more than a <br />1000 foot section of bank armoring on the west bank will require <br />placement at any time requiring 2.35 cy/lf of material (2350 <br />cyds). A stockpile of armoring material will be maintained <br />adjacent to the area where it is needed, so the only cost is for <br />placement. <br />The calculations for bonding the slurry wall liner in Phase <br />1 use the estimated length of the slurry wall in the effected <br />Phases (Phase 1), times the average depth, which includes the <br />bedrock key. The estimated unit cost is based on DRMS past bond <br />calculation of $5.00/sq-ft with no reduction for construction, <br />until the slurry wall is certified. No QA/QC number is included <br />since the walls have been placed prior to mining beginning in any <br />Phase. <br />Phase 1A is being used as a settling/fresh water pond. <br />Bonding covers the cost of backfilling if it is needed. Material <br />to complete backfilling in this phase will be stockpiled on the <br />south end of Phase 1A and North end of Phase 3 to reduce the haul <br />distance. There are 15.88 acres of backfilling to fill to a <br />level that is 2 feet above the existing ground water elevation. <br />No side sloping will be required, so 647,680 yards of backfill <br />material is needed for backfilling. No seeding is needed, as area <br />will become cropland. <br />Phase 3 will be used as a processing plant and stockpiling <br />area, potential drying pad for settling pond fines, overburden <br />storage, topsoil storage and equipment parking areas. <br />Approximately 60.6 acres will be disturbed on this stage, and <br />they would need to be resoiled (81,500 yards) and graded. At <br />this time, when the phase is being used as the plant site, the <br />area could be reclaimed as cropland, so no seeding would be done <br />until the farmer puts it back into production. Estimated <br />concrete foundations to remove for processing plant is 200 yds of <br />concrete. The slurry wall is not installed at this time since no <br />ground water is exposed and mining has not started in this Phase, <br />so no cost for the slurry wall is included. <br />L.G. Everist, Inc. Ragsdale Reservoirs June 25, 2020L-2