Laserfiche WebLink
X. Backfilling and Grading <br /> Backfilling and grading operations are described in Sections 2.05.2, 2.05.3 and <br /> 2.05.4(2)(c) of the permit. Post-mining topography is shown on Map 2.05.4-1. The <br /> NHN permit area will be returned to approximate original contour. The entire volume of <br /> spoil will be used to backfill the areas mined, and the operator has not requested a <br /> modification of the general requirements of 4.14.2 for reclamation to approximate <br /> original contour. No cut-and-fill terraces have been proposed or approved. <br /> XI. Revegetation <br /> Information regarding baseline vegetation studies may be found in Section 2.04.10 of the <br /> permit application. Information regarding revegetation of disturbed areas may be found <br /> in Section 2.05.4(2)(e) of the permit application. The goal of revegetation efforts at the <br /> New Horizon North Mine is to establish post-mining land uses of Irrigated Pasture and <br /> Dryland Pasture. Letters of consent by the present landowners are included in Appendix <br /> 2.05.5-1. <br /> The Division proposes to approved the center pivot irrigation system as outlined in <br /> Appendix 2.05.4(2)(e)-I and Map 2.05.4(2)(e)-1 of the PR-2 application. The new <br /> irrigation designs are consistent with the reclaimed topsoil configuration which will <br /> maximize the use of irrigation water. The irrigation system will be used to support the <br /> post-mining land uses of irrigated pasture/cropland. <br /> The Division proposes to approve seed mix 95-irrigated pasture/cropland. The seed mix <br /> consists of alfalfa drill seeded at a rate of 18 Pure Live Seed/acre. A cover crop of oats <br /> may be planted in the first year at a rate of 70 Pure Live Seed/acre. <br /> A. The Division proposes to approve the use of introduced species in the reclamation <br /> seed mix. The applicant has submitted information which shows that the introduced <br /> species are desirable and necessary to achieve the approved post mining land use, <br /> and are not poisonous or noxious (Section 4.15.2(3)). <br /> Seed mixes number 2 and 3 are temporary seed mixes. Mix 92 is for areas less than <br /> one year until the permanent mix will be planted and Mix 93 is for longer term <br /> temporary plantings such as topsoil stockpiles. The introduced species in these <br /> mixes will facilitate site stabilization and provide organic matter when incorporated <br /> into the topsoil prior to permanent seeding. <br /> Seed mix numbers 5, 6 and 7 are for the reclaimed irrigated pastureland; the mix is <br /> determined by moisture availability. All species in these mixes are introduced and <br /> were selected as beneficial for grazing purposes as discussed in Section <br /> 2.05.4(2)(e). The irrigated pasture mixes are seeded in the spring along with a <br /> companion crop of oats. <br /> 24 <br />