2017-03-23_PERMIT FILE - C1981019A

• Permit No: C1981019A
• IBM Index Class Name: Permit File
• Doc Date: 3/23/2017
• Doc Name: Permits
• Section_Exhibit Name: Volume 15 Rule 2
• Media Type: D
• Archive: Yes

RULE 2 PERMITS
During the initial facitlites development a stage development of the Section 36, Middle Pond, and Section
25 Pond will occur to avoid the brooding and lekking season for Greater Sage Grouse. This plan can be
seen in Exhibit 7, Item 23, Part J.
The sediment ponds will remain in place until such time as the entire disturbance footprint area reporting
to these structures is reclaimed and the requirements of Rule 4.05.2(2) are met. The best case scenario for
this would be a minimum of 2 years after the last seeding occurs within the affected contributing
watershed. Therefore, the earliest anticipated removal of these structures is approxiamtely 2035.
One containment pond (Wilson Storage Pond) is utilized to store water during the initial construction of
the Collom Haul Road and Collom Facilities Area. Water is pumped or trucked in from an exisisting
Colowyo held water right and is stored in the Wilson Storage Pond and utilized for dust suppression and
other water needs during construction. It is estimated that the Wilson Storage Pond will only be needed
for a short period of time (2-3 years) and then it will be reclaimed. The design for this storage pond can
be found in Exibit 7, Item 23, Part L.
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).
Topsoil stripping will occur in advance of mining and can be anticipated to occur within the mine plan
blocks depicted 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.
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:IV. 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 78 Revision Date: 12/30/16
Revision No.: TR -108