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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 lA 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 lA 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 L-2 June 25,2020 <br />