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9. The Mining Plan states that a portion of the mining area lies in the floodplain of the <br />Arkansas River. There is a possibility that water could enter the pit during a flood <br />event, resulting in headcutting of the highwall. The Division asks that you consider <br />implementing measures to prevent water from entering the pit during such an event. <br />10. The Mining Plan states that 2 phases will be disturbed at any given time. Describe the <br />point of maximum disturbance for each phase. Please include enough detail so that <br />the Division can calculate the maximum interior highwall dimensions that will <br />require reduction to a 3:1 slope. This information is necessary to assist us with our <br />financial warranty calculation. <br />11. The Mining Plan indicates that mining will progress down to the bedrock, which will <br />be used in the construction of the liner. Please specify the depth to which the bedrock <br />will be mined. <br />12. An unaccounted for overhead electric line was identified during the pre-operation <br />inspection of the site. The electric line runs from north to south through the two <br />reservoir cells. Please explain what will happen to this electric line when this area of <br />the site is mined. Also, include the overhead electric line on the Mining Plan Map and <br />the Reclamation Plan Map if necessary. <br />6.4.5 Exhibit E - Reclamation Plan <br />13. The Reclamation Plan states that when reclamation is complete, the site will contain a <br />reservoir with two interconnected cells. Please clarify how the cells of the reservoir <br />will be interconnected. <br />14. The applicant indicates that the topsoil stockpiles will be seeded if they sit longer than <br />one growing season. Please specify the seed mix to be used on the topsoil stockpiles <br />per Rule 6.4.5(f)(ii). <br />15. The Reclamation Plan calls for replacing the topsoil to a depth of six inches. The <br />Division recommends replacing the topsoil to a depth of twelve inches. The affected <br />area will be primarily surface water when reclamation is complete. This will provide <br />the operator with a sufficient amount of topsoil, so as to replace it to a depth of twelve <br />inches. Please commit replacing twelve inches of topsoil. <br />16. The Reclamation Plan states that a perimeter drain will be installed if needed to <br />convey groundwater around the lined reservoir. The applicant should identify the <br />trigger(s) that will determine whether the installation of the drain is needed. <br />17. According to the Reclamation Plan, part of phase 20 may be filled in if there is excess <br />material. Please clarify where phase 20 is located. <br />18. The Reclamation Plan states that inlet and outlet facilities for the reservoir will be <br />designed when the end use of the reservoir is identified. Please provide the Division