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You have shown the buried gas pipeline and the county road, both being significant stmctures and required to be shown. Please also show any fencelines on or near the permit area, and label their owners. (It is also known that the gas pipeline within the permit area may be relocated in the future. When that occurs, you must update your permit maps, though this "updating" by itself will not require a technical revision to the permit.) All of the phases area shown on the pre-mining map, but not on the mining map. If you wish to show mining-stage topography of only Phases 1 and 2, please provide another map showing the topography of other interim stages of mining. Please try to show all phase boundaries, even if they are not the ones shown as currently being mined. The phase numbers aze understood to represent the sequence of the mining the five areas, but it is not exactly clear the progression of mining within each phase. Please provide arrows which show the mining direction in each phase. There is an existing road shown on maps C-b and C-c, which appears to provide access to Phases 1. Since your plan includes reclamation being carried out concurrently with mining, the roadways within Phases 1 and 2 should also be shown. Likewise, since there is no road shown to provide access across the gulch to Phases 3 and 4, please show the road locations for that crossing and within the eastern phases. The topography shown on map C-b indicates that mining may be carried out to the bottom of the gulch or nearly so. Your mining plan narrative does not clearly explain this, and my understanding from our discussion during our onsite inspection indicated that the lower portion of the gulch would not be affected. Please show any areas in the gulch that will or will not not be affected. Please be reminded that if you do plan to affect the bottom of the gulch, you may need to contact the Army Corps of Engineers to see if a permit is needed. Please show the locations of the stormwater control structures on the mining maps. During the inspection we discussed the idea of berms along the outer margins of the pit benches (to prevent pit floor runoff from discharging to the gulch). If a road is planned for crossing the gulch, it should also include stormwater controls. Exhibit D -Mining Plan (Rule 6.4.4) Your plan states that mining will occur to depths ranging from 12 to 50 feet. The gulch onsite ranges in depth from 80 to 100 feet, which indicates that mining might not occur at the bottom of the gulch. This question corresponds to an item asked above, concerning whether mining would occur there. Please clarify this item here, and if needed, please revise your maps. If you plan to locate a haul road across the gulch, please describe the type of crossing, placement of fill, and plans for providing drainage. It is not exactly clear what the pit slopes will during the active mining. Willa 3: I slope be created during mining by pushing all material down at a constant 3:1 or reduced to 3:1 by cut and fill? Willa 3:1 slope be created by either method above and then plated with reject material, or a steeper slope backfilled with reject to 3:1 after extraction is completed there? Will there be a difference between slopes created during mining depending on whether the slope is in its feral (perimeter) location or in an interim (interior) location? Please note that the maximum slope you commit to in your response will become a permit condition that will be monitored during inspections. Clarifying these issues is important for the bond estimate, since reclamation earthwork is a large part of the cost. The topsoil stripping and stockpiling was included in your Exhibit E (Reclamation Plan) though it should actually be covered here. You stated that topsoil and overburden would be removed and stockpiled, far later replacement during reclamation. It would be preferable if these two materials were separately stripped, stored and replaced, but it is not clearly described. Please clarify if this is to be the case.