2013-10-06_PERMIT FILE - C1981019

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RULE 2 PERMITS Channel Design; Exhibit 7, Item 26 — Collom Pond Design Maps; and Exhibit 7, Item 23 (for information pertaining to diversion channels during mining) for specific designs and locations of these structures. The sump and pond will remain in place until such time as the entire disturbance footprint area reporting to these structures is reclaimed and granted full liability release through the Phase III Bond Release process. The best case scenario for this would be a minimum of 10 years after the final reclamation block is seeded within this drainage area, currently anticipated in 2033. Earliest anticipated removal of these structures would be 2043. 2.05.3 (5) Topsoil Prior to any mining related disturbances, topsoil will be removed from planned disturbance areas as discussed in Section 2.05 (Topsoil Redistribution Plan) and Section 4.06 (Topsoil) and redistributed or stockpiled as necessary to satisfy the needs of the reclamation timetable. Topsoil will be removed by large crawler mounted bulldozers, loaders or scrapers as described in Section 2.05.3, Production Methods and Equipment. Topsoil stockpile locations and extent of stripping is presented in Topsoil Handling Map (Map 28C). Annual stripping polygons are identified on Map 23B. The overall life -of -mine topsoil balance is estimated in Table 2.04.9 -16. It should be stressed that these yearly figures are estimates and can only be useful as a general guide to topsoil removal or replacement during any given year. In 2006, TR -62 was approved to modify topsoil redistribution depths. The revision also includes a requirement to annually report topsoil stockpile volumes (Volume 1, Section 2.05 "Topsoil Redistribution Plan "). This commitment to provide topsoil volumes in the annual report also applies to the Collom Revision area covered under PR -03. As TR -82 was approved in 2010, similar language allowing the replacement of variable topsoil depths has been included in this revision. All yardage and acreage figures were calculated based upon the assumption that topsoil would be removed in advance of mining activities as shown on the Mine Plan Map (Map 23B). The stockpiling of topsoil will continue until all pit development has progressed to its maximum extent. Areas available for final reclamation prior to mine closure consist primarily of backfilled pit areas. Topsoil to cover these areas will either be direct placed from areas of topsoil removal activities or topsoil will be hauled from the topsoil stockpiles. Direct placement of topsoil will be the preferred method, however, the stockpiled material will be utilized if equipment schedules, weather conditions or other operational factors make direct placement less desirable or less cost effective. After mining and regrading operations have ceased, all stockpiled topsoil will be used to reclaim the remaining pit and other disturbance areas. Topsoil will be stored in topsoil stockpiles as shown on Map 28C. Stockpiles will be constructed with outside slopes no steeper than 3H:1V. Stockpiles are specifically located to avoid erosion from wind and water and additional compaction or contamination. As can be determined from the Topsoil Handling Map (Map 28C), all proposed stockpiles are located within stable areas. The piles will be protected from wind erosion by planting a perennial mixture as explained in Section 4.06.3 as soon as conditions allow. Proper seasons of planting will be early spring or late fall. In addition to the planted material, a considerable amount of volunteer growth can be expected to grow on all stockpiled topsoil. External erosion will be controlled through proper location of the stockpiles. No topsoil stockpiles will be placed in a drainage bottom where external erosion might pose a potential threat. Collom — Rule 2, Page 99 Revision Date: 9/28/11 Revision No.: PR -03