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Pond Systems And Best Management Practices <br /> As specified in the Stormwater Management Plan, reclamation of the following outfalls was <br /> accomplished in 2000: <br /> Pond Outfall Pond Outfall <br /> Number _Notes Number _Notes <br /> 001 Old Refuse Pile, East 017 Mine 5 <br /> Upper 018 Mine 1 <br /> Middle Upper <br /> Lower Lower <br /> 006 Old Refuse Pile,Top 021 Sutey Refuse Pile <br /> 008 Bus Garage Upper <br /> East Lower <br /> West 022 Mine 2 <br /> North Upper <br /> 010 Warehouse Lower <br /> Upper 023 Mine 3 Bin Pad <br /> Lower 024 Sluny Pond <br /> 013 Mine 4 025 Rock Tunnel Pad <br /> Reclamation construction at each of the ponds was accomplished in the same manner. <br /> Construction began by excavating the corrugated metal pipe (CMP) dewatering device located <br /> within each pond. Excavated dirt was generally used as a topsoil substitute at the top of the pond <br /> embankment, along a small portion of the pond margin, or on associated access roads. During <br /> removal of the CMP, the side slopes of each cut were reduced to 2.5 H : 1 V, and the excavation <br /> was widened to five feet minimum width. Following completion of excavation, two courses of <br /> rip rap were placed within the cut. The first was mechanically pushed into the excavated <br /> embankment at the base and into the lower portion of the side cuts. The second course was <br /> placed over the first. The cut slopes were then severely roughened to minimize erosion potential <br /> and to promote successful revegetation. A wetlands seed mixture was distributed around the <br /> perimeter of each pond from the water level to an elevation ten feet above the water level. An <br /> upland, high altitude reclamation seed mixture was distributed on any disturbed areas above the <br /> ten foot elevation, and on the access roads. Approximately sixty willow cuttings were planted at <br /> the perimeter of each pond. <br /> The Best Management Practices employed included severe surface roughening of excavated pond <br /> embankments in order to disrupt surface flows and to minimize erosion potential. Construction <br /> was accomplished when water levels were low so as to not impact water quality with sediment. <br /> 3 <br />