2016-11-18_PERMIT FILE - C1981019A (7)

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RULE 2 PERMITS 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 pit disturbance. Topsoil will be stored in topsoil stockpiles as shown on Map 28A. Generally, topsoil from areas west of the Section 16 pit will be store in the western stockpile and topsoil from areas east of the Section 16 pit will be stored in the eastern stockpile, however operational considerations may result in periodic variations from this plan. The western pile is anticipated to hold approximately two thirds of the salvaged topsoil and the eastern pile approximately one third. Both stockpiles may be active during the life of the mine. The topsoil generated from development of the South Taylor Haul Road will be placed into windrow piles along the haul road corridor. Location of these stockpiles is shown on Maps 28 and 28B. Construction specifications for these stockpiles will follow all prudent regulations within this section (2.05.3(5)) and as follows. Stockpiles will be constructed with outside slopes no steeper than 3h:ly. 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 28B), 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. Unnecessary compaction will be avoided by keeping all but essential traffic off the stockpiled areas. Topsoil signs will identify topsoil stockpiles. Contamination of the stockpiles will be eliminated by the careful selection of sites that are distant from the areas where actual mining activities are occurring. Drainage ways and areas near spoiling and blasting will be avoided where possible. 2.05.3 (6) Overburden The complete description of the removal, handling and storage of all overburden material within the permit area is described under the Production, Methods and Equipment Section found at the beginning of Section 2.05.3. The spoil handling procedures and spoil monitoring plan parameters for the operation can be found on Section 2.05.3 of Volume 1. The mining sequence for the planned operation is shown on the Mine Plan Map (Map 23A). Cross sections showing the mining operation during the "steady-state" operation are found on the Mining Range Diagram (Map 24B). For the spoil disposal locations and volumes for both the East and West Taylor valley fills and the temporary overburden stockpile, please refer to Map 35A. The cross-sections that are associated with the design of the valley fills and the temporary stockpile can be found on Map 40A. Permanent Valley fill construction and design criteria is described in detail in Section 4.09 of the South Taylor permit revision A temporary overburden stockpile will be built above the East Taylor valley fill. The spoil suitability and special handling procedures are described in detail in section 2.05.3(1) of the South Taylor permit revision. The initial development of the stockpile is anticipated to begin during the year 2008 with continued development occurring over the next five to eight years of operation. As for the design of the temporary overburden stockpile, it will be constructed in 50 foot lifts by use of trucks, dozers and loaders. The side slope of the active dump will not exceed a 1.3h: Iv overall slope and South Taylor/Lower Wilson — Rule 2, Page 74 Revision Date: 11 / 18/16 Revision No.: MR -163