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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 Slurry 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 /> All disturbed areas were revegetated with appropriate wetlands and uplands area seed mixtures in <br /> order to promote long term stability of the sites. Silt fences were erected below excavation areas <br /> in order to retain sediment prior to it entering adjacent water resources. <br /> Inspections conducted in 2002 indicate that the Best Management Practices employed during <br /> construction were functioning as designed. The rock rip rap placed in the bottom of the <br /> excavated spillways was sufficient in size and volume to deter erosion. No erosion of the <br /> embankment cut slopes was observed. The severe scarification and the minimal height of these <br /> areas was sufficient to minimize erosion potential. The silt fence erected at the base of each cut <br /> slope was tightened and stabilized as needed at select locations. Generally, silt fence will be <br />