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2.3.3 Water Requirements During Mining and Reclamation <br />Water is required for the control of fugitive dust along the haul road. Water requirements <br />for fugitive dust control are approximately 1500 gallons per day or 540,000 gallons per year. <br />There will be periods when no water will be required; thereby, reducing this requirement by an <br />indeterminate volume. <br />2.3.3.1 Water Rights <br />Water used in the mining and pollution control operations were obtained from the <br />McClane Canyon Mine dewatering system. <br />2.3.4 Sedimentation Controls <br />Surface runoff from the areas disturbed by the waste rock disposal area were routed to a <br />sediment pond. The ponds and ditches were designed in accordance with applicable criteria. <br />Discharge of water from the sediment pond is covered by a CDPS permit. One new silt fence <br />was placed in the berm that surrounds the reclaimed lower topsoil stockpile area. The silt fence <br />is designed so the outflow will not have more than 0.5 ml /I of sediment. The drainage areas are <br />shown on Page M(viii) -3ii. <br />The refuse pile and lower topsoil stockpile were reclaimed in 2007 and the vegetation <br />has thrived. A sediment loss comparison has been made that shows run -off from the vegetated <br />refuse disposal area, portal area and lower topsoil stockpile will contribute fewer suspended <br />solids to streamflow or run -off outside the permit area than untreated drainage from the natural <br />surrounding premining area. Therefore, the refuse pile sediment pond can be reclaimed and silt <br />fences can be removed. The sediment loss comparison is located in Appendix M(viii) beginning <br />on page M(viii) -4. <br />Additionally, untreated drainage from the disturbed areas is required to meet the State <br />and Federal water quality standard requirements applicable after the sedimentation ponds and <br />treatment facilities are removed. Run -off from the reclaimed sediment pond flows into Munger <br />Creek which flows to East Salt Creek. Munger Creek is an ephemeral channel that only flows <br />during spring snowmelt and as a result of significant storm events. Munger Creek's drainage <br />area encompasses 7.7 square miles (Table 4.5 -4). The drainage area for the sediment pond is <br />16.26 acres (Appendix M(vii)). Thus, the sediment pond drainage area is 0.3% of Munger <br />Creek's drainage area. <br />This small drainage area would not have any measurable impact on the quality or <br />quantity of water in Munger Creek. Removing the sediment pond could improve water quality <br />since conductivity of water standing in a pond tends to increase due to evaporation. The <br />vegetation on site will help reduce the sediment load that enters Munger Creek. The soils on <br />site do not have any physical or chemical constituents that would degrade water quality. There is <br />no reason to expect oil and grease will contaminate run -off from the reclaimed areas since there <br />is no oil or grease storage within the reclaimed areas. <br />Mine Bench Area <br />Five new silt fences were strategically placed at the reclaimed bench as part of the 2007 <br />reclamation efforts. Two of the silt fences were designed so their outflow will not have more <br />than 0.5 ml /I of sediment. The three additional silt fences were required to provide drainage <br />relief from low points in the berms. The drainage areas are shown on Page M(viii) -1 iv. As <br />TR -25 2 -26 05/14 <br />