Laserfiche WebLink
• <br />• <br />• <br />EXHIBIT C <br />6.3.3 Mining Plan: <br />(1) The purpose of the mining plan is to describe how mining will affect the <br />permit area for the duration of the operation. This plan must be correlated <br />to Exhibit E — Map: <br />(a) The estimated dates mining will begin and end. If the operation is <br />intended to be an intermittent operation as defined in by statute, the <br />Applicant should include in this exhibit a statement that conforms to the <br />provisions of the statutory requirements: <br />This is an on -going mining operation. Based on known reserves and mining at 70,000 tons per <br />year, the operation could produce for up to 50 years. We do not anticipate periods of intermittent <br />mining activity. <br />(b) The estimated depth topsoil will be salvaged, specify how the topsoil <br />will be stockpiled and stabilized with a vegetative cover or other <br />means until used in reclamation. Topsoil stockpiles must be protected <br />from mine operations traffic, stream channels or drainageways. The <br />location must be shown on Exhibit E — Map: <br />The proposed waste rock stockpiles and office /dry facility locations have been previously <br />disturbed during historic mining activities. Therefore, no topsoil exists on these areas for <br />salvage. The location of the sewer line is also across previously disturbed areas and no topsoil is <br />present. The location of the leach field will require removal of topsoil during construction. <br />Topsoil will be removed to areas adjacent to the leach field construction site. Once construction <br />is complete, the topsoil will be replaced and the site seed with the approved seed mix. <br />(c) Specify the thickness of overburden or quantity of waste rock, if any, <br />to be removed to reach the deposit. The location of any overburden <br />stockpiles or waste rock fill must be shown on Exhibit E — Map: <br />This is an underground mining operation. Some waste rock will be produced as the new Cross <br />Mine Decline portal is developed. The amount of waste rock from adit development is estimated <br />at 17,650 cubic yards or 30,000 tons. The waste rock will be made available to Boulder County <br />Road and Bridge Department and the U.S. Forest Service for use on their roads and used on site. <br />The waste rock stockpiles are not anticipated to be long term, needing reclamation at the <br />conclusion of mining activities. (At least one of the proposed stockpile locations is an existing <br />rocky area located near the proposed upper access road entrance.) The waste rock pile foot <br />prints may require reclamation, once mining ceases. The pile foot prints are estimated not to <br />exceed 0.3 acres. Their approximate locations are shown on Exhibit E. <br />Page 25 <br />