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~~ <br />M-97-071 <br />Page 3 <br />:~ <br />excessive erosion and sedimentation to occur. The operator may want to install upland <br />diversions to divert surface runoff away from the disturbed areas, and/or install sediment <br />traps below the disturbed areas to capture any excess sediment that could be carried away <br />during heavy precipitation events. Please address this topic and indicate if the Colorado <br />Department of Health-Water Quality Control Division has been contacted concerning <br />whether or not a storm water permit will be necessary for this operation. <br />(f) Please identify on the mining plan map where the topsoil stockpiles that will be used <br />during reclamation will be located. This is addressed in more detail under Exhibit E. <br />Also, please clarify to what depth the mining will occur. The application states that the <br />deposit varies from 12 to 24 inches in depth and the surface layer is 5 inches with soil of <br />6 to I8 inches. Please clarify this section by stating how much topsoil will be salvaged <br />and stockpiled for use during reclamation, how much overburden will be removed and <br />replaced and how much material is anticipated being mined after removal of the topsoil <br />and overburden. <br />6.4.5 EXHIBIT E- Reclamation Plan <br />(2)(d) Please provide a detailed description of how much topsoil will be removed, where it will <br />be stockpiled and measures that will be taken to protect the topsoil during storage such as <br />upland diversions and temporary seed mixes. Please provide a description of how the <br />spoil will be regraded, stabilized, and compacted and what measures, such as ripping or <br />roughening of the spoiVsoil contact, will be taken to ensure that slippage zones between <br />regraded spoil and topsoil will be eliminated. <br />(e) Please provide a plan for how and when reclamation will be implemented in relation to <br />the rest of your mining plan. This plan should include: <br />(i) An estimate of the periods of time which will be required for the various stages <br />or phases of reclamation; <br />(ii) A description of the size and location of each azea to be reclaimed during each <br />phase ;and <br />(iii) An outline of the sequence in which each stage or phase of reclamation will <br />be carried out. <br />(f)(v) Specify minimum depth or range of depths (IE: 6-12 or 12-18, etc.)for those areas where <br />topsoil will be replaced. <br />6.4.6 EXHIBIT F- Reclamation Plan Man <br />