2021-06-08_REVISION - M2001046 (9)

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Page 4 Mr. Eric Scott June 4th, 2021 of Section 3.1; (d) Where applicable, plans for topsoil segregation, preservation, and replacement;for stabilization, compaction, and grading of spoil;and for revegetation. The revegetation plan shall contain a list of the preferred species of grass, legumes, forbs, shrubs or trees to be planted, the method and rates of seeding and planting, the estimated availability of viable seeds in sufficient quantities of the species proposed to be used, and the proposed time of seeding and planting; (e)A plan or schedule indicating how and when reclamation will be implemented. Such plan or schedule shall not be tied to any specific date but shall be tied to implementation or completion of different stages of the mining operation as described in Subparagraph 6.4.4(1)(e). The plan or schedule shall include: (i)An estimate of the periods of time which will be required for the various stages or phases of reclamation; (ii)A description of the size and location of each area to be reclaimed during each phase;and (iii)An outline of the sequence in which each stage or phase of reclamation will be carried out. (The schedule need not be separate and distinct from the Reclamation Plan, but may be incorporated therein.) (0 A description of each of the following: (i) Final grading-specify maximum anticipated slope gradient or expected ranges thereof; The reclamation plan text states that reservoir slopes will be no steeper than 3:1, and the provided reclamation plan maps show interior slopes of 4:1 for all lined excavations. The Division has no objection to 4:1 interior slopes for the lined reservoirs, but would like clarification as to how the operator intends to determine if 3:1 slopes or 4:1 slopes are appropriate for the site. This interior sloping will also have a large impact on the amount of material that will need to be replaced for the reclamation bonding, and the resulting costs. DRMS will require calculations based on material required for 4:1 interior slopes, if that is what will be utilized. RMCC at this time plans on mining the site at a 3:1 interior slope and reclaiming with 3:1 interior slopes. RMCC may in the future determine to mine at a temporarily steeper slope consistent with the submitted geotechnical stability report and reclaim with overburden in which case the Mining and Reclamation plans will be updated through the Technical Revision process. The Exhibits C, D, E and F have been updated to reflect 3:1 slopes. (ii) Seeding-specify types, mixtures, quantities, and expected time(s) of seeding and planting; The application refers to Exhibit F in several locations for this information, however it is not present on either of the maps provided. Please provide the reclamation seed mix and rates as required. (iii) Fertilization-if applicable, specify types, mixtures, quantities and time of application; (iv) Revegetation-specify types of trees, shrubs, etc., quantities, size and location;and (v) Topsoiling-specify anticipated minimum depth or range of depths for those areas where topsoil will be replaced. EXHIBIT F-Reclamation Plan Map (Rule 6.4.6): The map(s) of the proposed affected land, by all phases of the total scope of the mining operation, shall indicate the following: (a) The expected physical appearance of the area of the affected land, correlated to the proposed mining and reclamation timetables. The map must show proposed topography of the area with contour lines of sufficient detail to portray the direction and rate of slope of all reclaimed lands;and (b) Portrayal of the proposed final land use for each portion of the affected lands. Please revise maps(if needed) to correspond with responses to comments on the Reclamation Plan above. EXHIBIT G- Water Information(Rule 6.4.7): (1) If the operation is not expected to directly affect surface or groundwater systems, a statement of that expectation shall be submitted.