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Turnpike Mining Resource AM-01 Adequacy Review <br />M-2004-009 <br />August 25, 2005 <br />Page 4 <br />19. In construction of the clay liner, the application indicates clay will be compacted in 1-foot lifts and <br />within 2% of optimum moisture content. To achieve the desired impermeability, the clay should not <br />be compacted at less than the optimum moisture content. Consider revising this statement to "at or <br />up to 2°/u greater than the optimum moisture content." <br />20. If the bond was forfeited and the Division was then responsible for installing the clay liner, we would <br />construct a keyway in the bedrock for the clay liner to prevent leakage and improve stability. <br />Therefore, the bond calculation will include a keyway. <br />21. There appears to be an error in the "Seeding and Fertilizing" section of Exhibit E, where it states, <br />"The total area to be seeded is approximately 64 acres. The total area to be fertilized is <br />approximately 148 acres." Please resolve this discrepancy in both the Reclamation Plan and on <br />Exhibit L -Reclamation Costs. <br />22. Please provide the dimensions of the haul roads and the reclamation plan for these roads. <br />Rule 6.4.6 Exhibit F -Reclamation Plan Map <br />23. On Sheet 3, it appears that the numbers denoting the slopes were transposed. Please change the <br />map to depict 3H:1 V slopes rather than 1 H:3V slopes. <br />Rule 6.4.7 Exhibit G -Water Information <br />24. Per Rule 6.4.7(3), please provide an estimate of the project water requirements including flow rates <br />and annual volumes for all phases of the operation. <br />25. Per Rule 6.4.7(4), please indicate the sources of water and the projected amount of water to be <br />obtained from each of the sources. <br />26. On the Mine Plan and Reclamation Plan maps, please identify the extent of the flood plain within the <br />permit boundaries, and the floodway, if known. Describe how 100-year-flood flows will be managed <br />through the site during the mining, reclamation, and post-reclamation phases of this operation. <br />27. Please provide the information used to reach the conclusion, "There are no nearby wells or <br />significant bodies of water that are expected to be adversely impacted by the operational <br />dewatering." <br />28. The Pre-Mining map shows cottonwoods offsite and east of cell 1. Considering that a 1-foot water <br />table drop could stress and a 2-foot drop could kill cottonwoods, how will dewatering impact these <br />and other nearby offsite cottonwoods? Please also identify any wells that may be affected. Other <br />than the hydraulic barrier for the Plumb & Dailey Ditch, how will the operator monitor and mitigate the <br />expected water drop from dewatering activities? <br />Rule 6.4.9 Exhibit I -Soils Information <br />29. The soils information supplied lists soil types and the narrative for each, but does not provide a <br />means for assessing how much of each soil type is present and where on the site. Please provide a <br />copy of the soils map with the mine boundary plotted on it. <br />