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PERMFILE55703
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PERMFILE55703
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Entry Properties
Last modified
8/24/2016 10:58:28 PM
Creation date
11/20/2007 4:42:44 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
C1982056A
IBM Index Class Name
Permit File
Doc Date
6/28/2006
Doc Name
pg 2.05-65 to 2.05-122.1
Section_Exhibit Name
2.05 Operation and Reclamation Plans Part 2
Media Type
D
Archive
Yes
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Parldna Areas <br />• After the employee parking azea (east of the mine office) and the min ready-line parking azea (west of the operations <br />center) aze no longer required, any pazking islands will be removed and the associated scrap metal and concrete will be <br />placed in the portal azea and buried. Similazly, paving material will be ripped, loaded, placed in the portal area, and <br />buried. Since the paving material has been placed over the previously regraded and compacted surface, the previously <br />designed and approved regrading plan for these aeeas will not be impacted, and reclamation of the areas will be <br />completed with regrading, drainage reestablishment, topsoil replacement and reseeding. <br />Waste Pie <br />The sequence of development and reclamation of the waste pile will occur in accordance with the following steps. The <br />waste pile, associated internal and external drainage control system, and hauhoad wIll be constructed in stages, and the <br />activity pattern described herein will be repeated throughout construction of the pile. The steps provided below aze <br />taken from the recommendation presented in Exhibit 26A and 26A-1. <br />The drainage ditches around and the lower segment of the haul mad into the site have been constructed as per the <br />design. Topsoil was salvaged from the entire footprint of the waste pile. The topsoil was placed in topsoil stockpiles <br />SF-12, SF-13 and SF-14. Upon completion of these preliminary steps the tce drain was installed as per the design <br />presented in Exhibit 26A. <br />During construction of the waste pile the benches will be constructed as per the recommendations presented in Exhibit <br />26A and 26A-1. These recommendations include constructing the waste pile in compacted lifts not exceedurg 2 feet <br />thick, during inclement weather, stockpiling material within the footprint of the waste pile. This allows for the material <br />to drain and then be spread during favorable weather conditions. Exhibit 26A-1 modified Exhibit 26A by revising the <br />construction sequence and removing the concept of a compacted zone fill. The entire lift will be constructed as one lift <br />• without having to construct an A segment and then a B segment. This will increase the stability of the pIle by <br />eliminating a potential slip-plane between the two segments. Also, it is planned to utilize the existing road into the <br />refuse pile as long as possible to provide access to the southern portion of the waste pIle. The road corridor will <br />eventually be filled with refuse material and it will be constructed as per the recommendation in Exhibit 26A-1, i.e. <br />keying in the fill. <br />A portion of the cover material to be placed over the waste material will be the native clays and subsoils located within <br />the footprint of the pile. Currently, some of these materials have been excavated from the toe drain and from within the <br />footprint of the waste pile. These materials aze stockpiled along the northeast toe of the refuse pile and adjacent to the <br />old pit. As the waste pile progresses in size, additional cover material will be excavated from within its footprint. This <br />material will either be placed dvectly on a finished face of the pile or stockpiled adjacent to or within the pile footprint. <br />The cover material will be placed over the finished face and compacted, then topsoil will be redistributed and seeded <br />with the pastureland seed mixture. The void left by excavating the cover material will be filled in with waste material, <br />thus increasing the amount of material that can be placed in the pile without increasing its footprint. The replaced cover <br />and topsoil will be maintained within 1 bench of each completed bench. This will provide a buffer between the active <br />bench and previously completed benches. The outslope of the bench will be wvered during the first available period <br />providing suitably dry conditions for placement. Cover material will be direct placed, to the extent possible, <br />particularly during the initial and middle construction phase of the pile. As the pile nears completion, a stockpile of <br />cover material may be required to provide sufficient material to complete the pile. Following the placement of cover <br />material, topsoil will be placed over the cover material with direct placement again utilized to the extent possible. <br />Topsoil from stockpile SF-6 will be used initially over completed portions of the waste pile outslope azea to facilitate <br />the final alignment of the perimeter drainage channel in the vicinity of stockpile SF-6. While topsoil from stockpile SF- <br />6 is being utilized, additional topsoil that must be stripped will be stored in stockpile SF-12. During the final phases of <br />the waste pIle construction, topsoil which could not be direct placed, will be redistributed on the pile fiom stockpile SF- <br />12. Equivalent yardage from the waste pile utilization of topsoil pile SF-6 will be substituted as necessary from <br />• stockpile SF-12 to cover the office azea, road corridor, tipple azea, original waste rock dump, and batch weigh loadout <br />facilities areas originally slated to be topsoiled from pile SF-6 (see Map 29). Topsoil will not be placed on any <br />constructed waste pile drainage terrace until the adjacent outslope above the terrace is completed and cover <br />MROS-202 2.05-100 10/11/OS <br />
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