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18. Please identify all permanent man made structures that will be removed and/or relocated as a result of <br />the proposed mining and reclamation plan (i.e. structures, utility lines, roads, water ditches, wells, <br />etc...). The applicant will need to submit a notarized ageement between the operator and the owner <br />of all structures that are to be removed or relocated. As an alternative, the operator can provide <br />adequate mining offset distances in accordance with Rule 6.4.19. However, once the ageements aze <br />received, they must be submitted to the Division in the form of a revision to the permit. <br />19. Please list and locate on the applicable exhibit all structures that will be constructed on site (i.e. <br />plants, offices, trailers, tanks, etc...) and provide their associated dimensions and composition in <br />order to accurately estimate a cost for removal in the reclamation bond estimate. <br />20. The applicant proposes to mine the pit slopes at 3h: lv. Rarely does the Division see this mining <br />practice occur due to the difficult nature to mine in this fashion. Typically, the Division observes <br />slopes that are mined at 1.Sh: Iv. Please further explain how the operator will mine at 3h:ly slopes. <br />21. Please inform the Division how the topsoilloverburden piles will be protected from the mining <br />operation. If the pit is to be mined to a depth of 25 to 50 feet at a O.Sh: iv slope, the topsoil piles may <br />become unstable and slope failure may occur if an adequate buffer distance is not established. The <br />applicant has the following options: <br />• Demonstrate that the topsoil pile will be stable under the proposed mining conditions using a <br />stability slope analysis, <br />• Maintain a set back distance at 2 times the depth of the pit and revise the maps to reflect this <br />buffer, <br />• Revise the mining and reclamation plan to include benching or ten•acing and including a slope <br />stability analysis, or <br />• Relocate the topsoil pile to a more stable location, and revise the maps accordingly <br />Rule 6.4.5 Exhibit E- Reclamation Plan <br />22. The applicant states that the post mining land use is both pastureland and developed water resources. <br />On the Reclamation Plan Map, a 12.3-acre is described as "Future Development" azea. Please <br />describe this area and explain how it correlates with the proposed post mining land uses. <br />23. The Reclamation Plan map indicates that the Phase 3 slurry wall will be tied into the slurry wall <br />proposed for the adjacent Baseline Resources site (M-1997-058). Please further explain how the <br />slurry wall will be tied into the Baseline Resources slung wall. Tn addition, the Baseline Resources <br />permit will need to address this issue as well in the form of a revision to the permit. <br />24. Please state if the slurry wall is to cross over any existing gas/well lines or other utility lines on site. <br />25. Please describe the road that is to remain on site azound Phase 3. Please include the road design, <br />composition and dimensions. <br />26. On Phase 3 of the water storage reservoir, please state how far down the slopes topsoil will be <br />replaced. <br />27. Hall Irwin proposes to replace 6" of topsoil on the reclaimed areas. The NRCS recommends that 12" <br />be replaced on site. According to the soil descriptions, it appeazs that 10" to 48" of topsoil is <br />available on site. The Pazker-Dersham site contains three soil units consisting of Unit 1 (Altvan <br />Loam 0 to I% slope) Unit 2 (Altvan Loam I-3% slope) Unit 3 (Aquolls and Aquerts). The Altvan <br />