2014-10-21_REVISION - M1988044 (5)

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TR-07 MINING PLAN Discussion: Topsoil stockpile placement cannot always meet these requirements in a strict sense simply because the lay of the land or indefinite sand deposit characteristics prevent this from occurring. However, preventing excessive sediment discharge into drainageways will always be observed, even if that means locating a stockpile further from the mining area than would be ideally desirable. REQUIREMENT 9: Topsoil stockpiles will be sloped and prepared for protective seeding. The side slopes will not be steeper than 2:1. Exception - If the stockpiled soil is expected to be replaced prior to stockpile protection being effective or if more soil will soon be added to the stockpile on top of existing soil, protective measures are not necessary. However, in the event that expected replacement does not occur in the time frame initially anticipated, appropriate protective measures will be taken. REQUIREMENT 10: For stockpiles that are in place into a growing season, the stockpile will be monitored to watch for the growth of noxious weeds. If noxious weeds appear in the stockpile, appropriate action will be taken to eradicate the noxious weeds. Appropriate action may be the use of herbicides or physical removal of the plants. Normal "tumbleweed" development (Kochia or Salsola) need not be controlled unless the growth is so dense that it endangers the success of protection species that have been planted. Discussion: Although noxious weed growth in stockpiles has been a very minor problem in the past, it cannot be assumed that will always be the case. The presence of noxious weeds in the stockpile, especially if they are allowed to grow and reproduce by seed or vegetative means, may cause even more problems after the soil is spread and revegetation begins. Therefore, controlling noxious weeds in stockpiles reduces, but does not eliminate, the need for weed control in the final revegetation. It is far more economical to control the problem when it begins than to wait until it becomes a widespread problem. REQUIREMENT M: Protective seeding of stockpiles, when needed, will utilize the seed mixture shown in the "Stockpile Seed Mixture" section of this Mining Plan. All overburden stockpiles will be placed such that erosion of the stockpile does not discharge sediment into nearby drainages. Overburden Removal and Stockpiling: REQUIREMENT 12: Overburden removal and stockpiling will occur according to the same principles that apply to topsoil removal and replacement. Overburden stockpiling will be separate from topsoil unless it is determined in the pre-mining assessment of that mining site that mixing of topsoil and overburden would not appreciably,damage the final growth medium. All overburden stockpiles will be placed such that erosion of the stockpile does not discharge sediment into nearby drainages. Coal Creek Sand Resource Amendment 3 (2005)- M-1988-044 Exhibit D Page 11