Laserfiche WebLink
The final surface as shown on the Post-mining Topography Map (Map 19) will approximate the <br />overall pre-mining grades. Appropriate cross sections that show the anticipated final surface <br />configuration of the proposed permit area, in conjunction with the existing pre-mining <br />topography, are shown on the Pre-mining and Post-mining Cross Section (Map 20). <br />This final surface configuration also reflects an often neglected concept of providing <br />topographic relief for wildlife habitat. The regrading plan reestablishes escape cover, south <br />facing slopes for wintering big game populations and small drainages suitable as future location <br />of small impoundments necessary to achieve the post-mining land use. <br />Colowyo has prepared this reclamation plan with the understanding that some aspects of <br />current reclamation practices are still in the development stages. Therefore, a degree of <br />flexibility has been provided to allow changes and modification as techniques are refined or <br />expanded. Colowyo will continue to evaluate the results of its reclamation plan each year in <br />consultation with the Division and take advantage of each opportunity to try new plant species <br />and materials and new methods for seeding and erosion control. <br />Topsoil Redistribution Plan <br />Prior to any mining-related disturbances, all available topsoil will be removed from the site to be <br />disturbed as discussed in Section 2.05.3, and will be redistributed or stockpiled as necessary to <br />satisfy the needs of the reclamation timetable as described herein. <br />Final grading before topsoil placement will be conducted in a manner that minimizes erosion <br />and provides a surface for the topsoil that minimizes slippage. If spoil compaction is a problem, <br />the spoil will be ripped with a dozer to minimize compaction, assure stability and minimize <br />slippage after topsoil replacement. Topsoil will then be redistributed and graded to a minimum <br />depth of eighteen inches (5" in a discrete area in Section 10, a Colorado State University shrub <br />establishment study plot with topsoil depths varying from 0 - 18" in Section 10, 12" in Section <br />11). Refer to Map 28 B for an overview of these areas. Topsoil may be applied at depths <br />greater than 18" in selected areas where plants, that may require a deep soil, will be <br />established in conjunction with the proposed post- mining land use. Topsoil will <br />2.05-41 <br />June 18, 2002 <br />MR-57 <br />CF 4.1.1.3. <br />