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MINING PLAN <br />4.) Soil stripped during the primary growing season (April through August) will be <br />protected. <br />REQUIREMENT: For stockpiles that aze in place into a growing season, the stockpile <br />will be monitored to watch for the growth of noxious weeds. If noxious weeds appear in the stockpile, <br />appropriate action will be taken to eradicate the noxious weeds. Appropriate action maybe the use of <br />herbicides or physical removal of the plants. Normal "tumbleweed" development (Kochia or Salsola) <br />need not be controlled unless the growth is so dense that it endangers the success of protection species <br />that have been planted. <br />Discussion: Although noxious weed growth in stockpiles has been a very minor problem <br />in the past, it cannot be assumed that will always be the case. The presence of noxious weeds in the <br />stockpile, especially if they are allowed to grow and reproduce by seed or vegetative means, may <br />cause even more problems after the soil is spread and revegetation begins. Therefore, controlling <br />noxious weeds in stockpiles reduces, but does not eliminate, the need for weed control in the final <br />revegetation. It is far more economical to control the problem when it begins than to wait until it <br />becomes a widespread problem. <br />REQUIREMENT: Protective seeding of stockpiles, when needed, will utilize the seed <br />mixture shown in the "Stockpile Seed Mixture" section of this Mining Plan. All overburden <br />stockpiles will be placed such that erosion of the stockpile does not discharge sediment into nearby <br />drainages. <br />Overburden Removal and Stockpiling: <br />REQUIREMENT: Overburden removal and stockpiling will occur according to <br />the same principles that apply to topsoil removal and replacement. Overburden stockpiling will be <br />separate from topsoil unless it is determined in the pre-mining assessment of that mining site that <br />mixing of topsoil and overburden would not appreciably damage the final growth medium. All <br />overburden stockpiles will be placed such that erosion of the stockpile does not discharge sediment <br />into neazby drainages. <br />Discussion: The blending of topsoil and overburden is rarely appropriate, but there <br />are indications that some soils on this site, particularly soils on the crest of hills and ridges, are <br />insufficiently developed to warrant separating the overburden from the soils. This is very rare or even <br />Coal Creek Sand Resource Amendment 3 (2005) - M-1988-044 Exhibit D Page 27 <br />