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v <br />finalized. BMR currently expects to use dozers, loaders and 85 <br />ton capacity haul trucks for excavation, loading and material <br />transport of the ore/waste. Soil removal will most likely be <br />accomplished using dozers, loaders and 85 ton or smaller capacity <br />haul trucks. <br />Section D.2.3 Site Description <br />4. As the West pit mining operation will require county road relocation, <br />please provide documentation verifying that the County has authorized <br />this relocation. <br />Response: BMR is working with County officials on the road relocation. <br />Discussions with the County are nearing conclusion and BMR will <br />furnish the Division with documentation verifying that the County <br />has authorized this relocation upon receipt. <br />Section 0.2.5 Pit Wa11 Stability <br />5. The pit wall stability study should be conducted to determine the slope <br />at which the pitwalls would be stable, assuming that ongoing dewatering <br />would cease following termination of mining. As the slope stability <br />analysis may influence the postmining pit configuration, the results <br />of the analysis should be submitted prior to permit approval. „_ <br />Response: The post mining stability of the pit walls has been evaluated <br />assuming that the dewatering operations will cease following <br />termination of mining. All of the pit walls, with the exception <br />of the south wall of the Nest 'Pit, have been determined to 'be <br />stable subsequent to mining operations in their as-mined <br />. configuration. As discussed in Exhibit G, significant inflows to <br />the pits from areas other than the south wall of the West Pit are <br />not expected. The stratigraphy, materials characteristics, ground <br />water conditions and analytical methods which form the basis for <br />this conclusion were developed as part of an extensive drilling <br />program undertaken in the pit area for determining pit wall <br />stability. <br />The south wall of the west pit will experience some seepage` <br />towards and into the pit from the Rito Seco through the surface <br />alluvium, if exposed during mining operations, and to a lesser <br />extent the Santa Fe Conglomerate. The extent of the surface <br />alluvium along the south wall can not be determined until mining <br />exposes this area. The seepage may have some effect on the <br />stability of the south wall. During mining operations the seepage <br />into the pit through the surface alluvium and the Santa Fe <br />Conglomerate will be actively collected or intercepted and <br />managed if necessary to prevent slope deterioration. Fallowing <br />cessation of mining operations, the seepage management operations <br />are expected to cease and additional measures may be necessary <br />to ensure long term stability of the south wall of the West Pit. <br />To resolve any concerns about the long term stability of the <br />south wall of the West Pit, BMR will implement engineering <br />