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Two questions <br /> 2. Please state the current bench configuration. What is the anticipated benching <br /> configuration moving forward? <br /> Rule 6.3.3(f) A line item for grading has been provided under exhibit L, however the Division <br /> is unclear what is being grade (how much of what and where) if highwalls <br /> are to be left in place. Is any grading associated with contouring? Please provide more <br /> information. <br /> The question appears to mix two exhibits, the 6.3.3 Exhibit C (f) (the mining plan) and <br /> Exhibit L (structures), in relationship between the configuration of the High Wall as it is <br /> currently, and some imagined bench configuration in the future. <br /> Given the slope and nature of the High Wall and the High Knob (face), no reclaim is <br /> proposed in the sense of a reduction to 3H/1R. The two benches sit perched above the High <br /> Wall and east of the High Knob, please refer to the multiple maps in the documents showing <br /> this. The present configuration is shown as contours generated from 2020 LIDAR data and <br /> DEMs. The contours are shown with a resolution as fine as a one foot change in elevation <br /> plus 10 and 40 ft. Further, the most easterly bench is mostly exposed bedrock (0.5 acres). <br /> The contours are not a proposed grading during a final reclaim but are analogous with a <br /> USGS topographical map. <br /> Given the uncertainty with how mining will proceed and after consultation with the <br /> owner/operator, it can only be said that the High Wall and High Knob might be reduced in <br /> elevation. Any usable overburden material that remains available in the vicinity of the High <br /> Knob, when a reclamation happens, will be graded towards the east bedrock bench. Slope <br /> will be determined by how much material is removed. <br /> The uncertainty is from the following: <br /> 1. The exact nature and extent of the product is not well defined. <br /> 2. The demand for products will be highly variable due to the nature of the property <br /> management by Twin Buttes Land Company LLC (e.g. ranching). <br /> 3.The availability of equipment and type for mining. <br /> 5. Table C-1 proposed a temporary seed mix for salvaged topsoil. Please include two <br /> additional grasses (needle and thread, bottlebrush squirreltail, Indian ricegrass, etc.). <br /> Additionally, the Division request that yellow sweet clover be omitted given its tendency to <br /> be invasive. Alfalfa is a suitable alternative. If sufficient seed stock of sweet clover is <br /> already present in the soil, not additional seeding is required. No additional grass species <br /> were provided as requested. Please include at least two additional <br /> grass species in the temporary seed mix. If possible please use native species. <br /> Answer: <br /> Slender wheatgrass (Elymus trachycaulus) 2 lbs <br /> Streambank wheatgrass "Sodar" (Elymus lanceolatus psammophilus) 2 lbs <br />