2007-12-17_PERMIT FILE - C1981020A (2)

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2.3.3 Water Requirements During Mining and Reclamation Water is required for the control of fugitive dust along the haul road. Water requirements for fugitive dust control are approximately 1500 gallons per day or 540,000 gallons per year. There will be periods when no water will be required; thereby, reducing this requirement by an indeterminate volume. 2.3.3.1 Water Rights Water used in the mining and pollution control operations were obtained from the McClane Canyon Mine dewatering system. 2.3.4 Sedimentation Controls Surface runoff from the areas disturbed by the waste rock disposal area are routed to a sediment pond or other approved structures. The ponds and ditches were designed in accordance with applicable criteria. Discharge of water from the sediment pond is covered by a CDPS permit. One new silt fence was placed in the berm that surrounds the reclaimed lower topsoil stockpile area. The silt fence is designed so the outflow will not have more than 0.5 ml/I of sediment. The drainage areas are shown on Page M(viii)-iii. Mine Bench Area Five new silt fences were strategically placed at the reclaimed bench as part of the 2007 reclamation efforts. Two of the silt fences were designed so their outflow will not have more than 0.5 ml/I of sediment. The three additional silt fences were required to provide drainage relief from low points in the berms. The drainage areas are shown on Page M(viii)- 1 iv. As shown on the figure, Ditch H bisects the area. Berms were installed on each side of Ditch H to keep disturbed area run-off out of the ditches. In response to NOV CV-2007-003 two additional silt fence segments were installed along each of the channel berms on the east and west sides of Channel "H" berm. Additionally, a berm break and water bar were installed to direct flow from an ephemeral channel into Channel "H". Waste Rock Disposal Area See section 2.2.5 Waste Rock Disposal Site. • RN-05 2-26 10/07