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May Day Idaho Mine Complex 112 (d) Permit Application <br />40<2% in the subsurface. Exchangeable cations are dominated by calcium with <br />negligible sodium. <br />(ii) Based on field observations and analytical results, there are no problematic soils <br />at the site and the regeneration of native vegetation on historically disturbed land is <br />extensive. <br />(iii) Nitrogen concentrations are just below an acceptable level of 0.07% (700ppm) <br />and phosphorus concentrations are very low. NRCS recommends the use of nitrogen <br />as a fertilizer as described in Exhibit H - Reclamation Plan. <br />(iv) No experiments will be undertaken to determine soil amendment requirements. <br />6.4.20(18) Wildlife Protection <br />(a) Mitigation Measures <br />A formal response is yet to be received from the Colorado Department of Wildlife <br />(CDOW) regarding mitigation measures. Wildcat Mining Corporation will adhere to all <br />measures recommended by CDOW. <br />(b) Measures to Prevent Wildlife Contacting Designated Chemicals <br />All designated chemicals will be stored in locked facilities that cannot be accessed by <br />• Wildlife. <br />6.4.20(19) Disposal of Tailings in Mine Workings <br />Wildcat Mining Corporation will comply with Rule 3.1.7 of the Reclamation Performance Standards for <br />the protection of groundwater. Based on data provided within this Environmental Protection Plan, the <br />following groundwater conceptual model has been developed for the protection of groundwater relative to <br />the disposal of tailings in underground workings: <br />• The geology consists of southward-dipping fractured sedimentary rocks cut by a series of east-west <br />faults; <br />• Water enters from the surface via the fracture system; <br />• Based on observations in the underground workings, while water moves through the fracture system, <br />the fractures and water are not pervasive until reaching the Entrada Sandstone which appear to be the <br />saturated zone, however, rarely used to support domestic or agricultural uses; <br />• Faulting has offset the Entrada Sandstone creating a series of distinct saturated layers within the <br />permit boundary: <br />¦ South of the fault zone within the permit boundary, the saturated zone appears to be <br />at approximately 8,300 feet AMSL; <br />¦ Within the fault zone, the saturated zone appears to be at approximately 8,700 feet <br />AMSL. <br />• Additionally, the faulting has separated the Entrada Formation from the aquifers within the La Plata <br />• alluvium, the Morrision Formation and the Mancos Shale; and <br />May Day Idaho Mine Complex 112(d) Permit Application <br />September 21, 2010 <br />17