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-~ . Rule 2.05.6(3)(b)(ii): The application provides a general description of alternatives that may be employed to treat surface and groundwater discharges to meet State and Federal effluent limits, but specific plans and effectiveness demonstrations are not provided. Please provide this information. 8. Rule 2.05.6(3)(b)(iii): Please provide information revising the current permit's existing determination of probable hydrologic consequences to reflect the effects of the proposed action on the hydrologic regime and the quantity and quality of water in surface and ground water systems within and adjacent to the permit area. This revised determination should address the cumulative impacts of present, current, and ultimate operational effects of the proposed, as well as existing and on going mining activities. The revised determination should address whether the proposed activities would internipt, diminish or contaminate water sources and if s-o, in what manner, and whether the proposed activities would create adverse sediment yields, stream flows or flooding potentials. The revised determination should also address the expected effects of the proposed activities on the concentration of total dissolved solids (TDS), total suspended solids (TSS), total iron, total manganese, pH, and salinity in Elk Creek. Rule 2.05.6(3)(iv): Please include a monitoring plan to verify the revised determination of probable hydrologic consequences. Please identify monitoring site locations, parameters and sampling frequencies, and describe how this data will be used to determine the impacts to the hydrologic balance. 10. Rule 3.02.2: Please provide the following information related to reclamation of the proposed surface facilities. Please provide the following items (see also item 4): (a) dimensions of the proposed conveyor, and the dimensions and number of the conveyor footers; (b) dimensions of the ventilation fans, ductwork, fan housing and concrete foundations; (c) information pertaining to the sealing of the vent fan shafts. What aze the dimensions of the caps? What materials (concrete, steel beams, steel plates, etc) will be used in the construction of the caps? How far below grade will the caps be placed? Where will the material used for covering the caps be hauled from? (d) location and dimensions of the downdrains proposed on page 2.05-37f to be established on the regraded borrow area. 11. Rule 4.03.2(4)(e)(iv): Debris can be expected from the drainage area above the proposed upper Elk Creek culvert. No design was found for a trash rack on the culvert. Please provide such a design. 12. Rule 4.04: The down gradient facial structural stability of the D-seam portal bench fill is not addressed within the technical revision application. This is a concern for two reasons. First, the majority of the proposed fill will be borrowed from the existing landslide above the bench. This material has been demonstrated to be of low shear strength and susceptible to displacement. Second, the bench will be constructed within the existing channel of Elk Creek, displacing the channel against the east valley wall. The creek's immediate superposed proximity to the fill may result in relatively high saturation, unless unusual precautions are exercised. Please provide a detailed discussion of the construction techniques and appropriate structural stability analysis of the D-seam portal bench. 13. Rule 4.05.2(3)(a): The Division may, under this Rule, grant an exemption from Rule 4.05.2(2) (sedimentation ponds for treatment of drainage) when an applicant provides the information discussed at 4.05.2(3)(a) and 4.05.2(3)(b). The applicant currently does not identify the location of the underground mine water discharge, so the Division is currently unable to determine whether mixing of surface water runoff and underground mine water will be prevented, and is thus unable [o determine whether the proposed activities could qualify for an exemption from Rule 4.05.2(2). Please provide this information.