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Where practical, diversion methods will be used to change the flow of <br />• water from undisturbed areas so as to bypass the disturbed area rather <br />than using treatment facilities. The principal technique to be used for <br />this purpose will be diversion ditches. These ditches are located on <br />the Regional Hydrology Map (Map 6) and the Mine Facilities Map (Map 12). <br />No acid- or toxic-forming materials are present in the area to be mined <br />which would require any special handling. No special treatment of coal <br />processing waste will be necessary because none will be produced, as <br />discussed in Sections 4.10 and 4.11. As discussed in Section 2.05.4, <br />Peerless Resources will use mulch on the graded area as one method to <br />prevent excess wind or water erosion. <br />Peerless Resources plans to have surface runoff from the disturbed area <br />pass through a sedimentation pond. The sedimentation pond is discussed <br />in detail under Section 2.05.6 and its location is shown graphically on <br />the Mine Facilities Map (Map 12). <br />• 4.05.2 Water Quality Standards and Effluent Limitations <br />The plan for protection and control of drainage and sediment described <br />in Section 2.05.6 provides that surface drainage from the disturbed area <br />within the permit area will be passed through a sedimentation control <br />structure. This pond will be constructed and maintained to safely <br />contain the volume design for a 10-year, 24-hour precipitation event. <br />The quality of water and accumulation of sediment in this pond will be <br />monitored periodically. In addition, grab samples of water will be <br />collected from the pond discharge to measure the effectiveness in <br />meeting the applicable Colorado and Federal 6later Quality Standards. <br />The proposed sedimentation pond has been designed and will be <br />constructed and maintained to effectively trap sediment from runoff <br />resulting from a 10-year, 24-hour precipitation event. <br />• Drainage from the mining facility area, after treatment in the <br />sedimentation pond, is not anticipated to exceed the effluent <br />4.05-2 <br />