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The excavated material suitable for topsoil will be salvaged in a stockpile used for <br />reclamation. The excavated material that is not suitable for a topsoil -like medium will be <br />graded into the surrounding topography within the disturbance area, topsoiled, and <br />revegetated in accordance with WFC's approved reclamation plan. Site specific <br />conditions will determine the construction methods and equipment utilized at the time of <br />excavation. Sediment removal and water discharges will be conducted consistent with <br />the approved mining permit, the Water Discharge Permit, and DRMS Regulations <br />Section 4.05.6(3)(b). All sedimentation ponds will be inspected quarterly under the <br />supervision of a registered professional engineer and reported to the DRMS. The Water <br />Discharge Permit is enclosed in Appendix 2.05.3(4) -3. <br />Pit dewatering will be primarily a seasonal occurrence. The dewatering process will be <br />a sporadic, operation - controlled occurrence depending on various factors which may <br />include the location of the pit inflows, the location of standing water in the pit, or the <br />location within the pit of the overburden and coal removal operations. When pit <br />dewatering is required, the anticipated dewatering rate will be in the range of one to two <br />cubic feet per second or less. Direct pit pumping into Pond NHN -001 or NHN -002 is <br />planned for the mining south of Meehan Draw and into Pond NHN -003 for the mining <br />north of Meehan Draw. Actual water flow velocity going into ponds will be controlled with <br />adequate energy dissipaters (i.e., rock riprap, geotextiles, metal or concrete energy <br />dissipator boxes, etc.) or discharged onto non - erodible bedrock material. This will <br />minimize erosion of the pond banks. <br />Pit dewatering will have an insignificant impact on the ponds. Pit dewatering will be <br />sporadic versus continuous. The flow rate of one to two cubic feet per second or less <br />compared to the designed 10 -year, 24 -hour peak inflow rate the ponds were designed <br />for is relatively insignificant. In addition, pit water high in suspended solids will be <br />allowed to set for a period of time so the solids are allowed to settle out of the water and <br />will remain in the active pit area. Only after the pit water is clear, will it be pumped from <br />the pit into the ponds. Further more, all discharge from the ponds will be in accordance <br />with applicable discharge permits. <br />Monitoring for rills and gullies on the pond and other reclaimed slopes will be carried out <br />on a periodic basis; the monitoring being geared to those periods after spring snow melt <br />and during required quarterly pond inspections. <br />Occurrence of excessive rills and gullies will result in implementation of the following <br />plan. One of, or a combination of, the following options and corrective methods will be <br />employed: <br />If it is determined that the topography of the regraded area is such that drainage <br />is concentrated in a particular area, then this area will be improved to accept the <br />runoff. In areas where no natural armoring is present, the drainage bottom or <br />channel will be reshaped, if needed. The channel bottom will be seeded, <br />covered with erosion matting and seeded, or rip- rapped. The method used will, <br />Section 2.05.3(4) Page 5 November 2011 <br />