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must contain at least 60% (by weight) large chunks,five inches or more in diameter. (Granular or <br /> powdery manure will not meet specifications.) <br /> If phosphoric acid is applied, it will be applied on the overburden prior to plant growth medium <br /> replacement.This nutrient is not mobile. Placing it in the root zone prior to plant growth medium <br /> replacement will ensure optimal utilization by plant roots. <br /> The seedbed will be well settled and firm, but friable enough so the seed can be drilled at the <br /> recommended depth. Soils having been compacted by traffic or other equipment will be tilled (deep- <br /> chiseled or ripped if necessary) breaking up restrictive or compacted layers, and then harrowed and <br /> rolled or packed to produce the required firm seedbed. If the seed is to be broadcast seeded,then the <br /> seedbed will be settled and fairly firm, but left rough enough to catch the seed and allow some coverage <br /> by soil when tracked in by equipment or harrowed and packed into the soil surface. Seedbed <br /> preparation will be avoided when the soil is wet to prevent seedbed compaction. Planting depth will be <br /> less than one inch. Drill row spacing will be approximately 8 inches. <br /> Topsoil will be replaced to a depth of between 8 to 12 inches similar to native soil in rocky areas. Soil <br /> will need to be deep enough to encourage root growth. Other areas (waste rock areas for instance) <br /> topsoil will be placed to a depth of 2 feet, depending on the condition of the surface. Because of the <br /> thin soil types at this site, there is no available site soil for reclamation. <br /> Because this is an underground mine, no overburden was removed and none will be replaced.The <br /> operation will not conduct backfill operations as one would expect for open pit or strip mine.There is <br /> always the possibility some minor backfilling may occur(ponds).Where backfilling should occur, it will <br /> be done in such a manner that the backfilled material will be appropriately compacted to prevent <br /> slippage or settling, provided it can be done in a manner not endangering operators and equipment. No <br /> toxic or acid forming material will be backfilled on site.Therefore, leaching of toxic or acid forming <br /> materials shall not occur. <br /> 1 .9 Seed Mixes <br /> The seed and planting mixes suggested below,were developed from the vegetation descriptions <br /> contained in Exhibit B, recommendations from DRMS, and (O'Shea-Stone and Ash 2008). Seeds and <br /> plantings may change because of availability at the time of reclamation or if site conditions change. <br /> The designated seed mixture shall be sown uniformly on the prepared areas during the fall to take <br /> advantage of winter moisture and cover. Seeding shall not be conducted if the ground is frozen.The <br /> seed mix recommended by the DRMS Inactive Mine Lands Program for high elevations will be used to <br /> revegetate the site.The following seed mix(Table3) is the DRMS recommended reclamation seed mix <br /> from Table 20-5 DRMS (2009) and is the suggested seed mix for areas above 9,000 ft. to timberline, and <br /> contains species currently at the site. <br /> The broad selection of species for reclamation is those recommended by the DRMS for mid to high <br /> altitude abandoned mine sites.All planting will take place in the fall of the year to take advantage of <br /> winter moisture, ensuring a satisfactory level of establishment. Where practical, seed will be drilled. <br /> Where not practical due to slope steepness, the areas will be broadcast seeded at twice the drill seeding <br /> rate.The seeded areas will be mulched and crimped or tackifier to control wind and water erosion. <br /> 8 <br />