Nevada Copper Corp NEVDQ

25.2.8

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25.2.8 Groundwater Hydrology & Dewatering (Underground) The regional numerical groundwater flow model developed estimated the maximum inflow rates of about 3,000 gpm for the Underground Project. Water pumped from the underground workings will be used to supply the mill, and excess water will be piped to an infiltration basin for reintroduction to the groundwater system. The inflow predictions were developed using currently available information on the geologic and hydrogeologic conditions at the site for the 2012 and 2015 studies and applied to this study. Prediction of inflows is inherently subject to uncertainties, and it is possible that as-yetunidentified conditions that will affect inflow rates could be encountered during mining, resulting in inflow rates higher or lower than those predicted. While it is considered unlikely that the predicted inflow rates will be exceeded, if higher inflow rates were encountered, the additional water could be handled with little or no disturbance to the mining operations, via additional infiltration basins. If inflow rates prove lower than those predicted to be encountered, supplemental water for process water supply will be available for from groundwater wells or from the City of Yerington municipal utility. 25.3 Open Pit A study with a prefeasibility level of accuracy for the stand-alone Open Pit Project has been completed, and it is evident that there is a positive business case for further advancement of the Open Pit Project through engineering, geological work, and further study. 25.3.1 Mineral Reserve & Mine Planning (Open Pit) The extent to which the mineral reserve estimates could be materially affected by mining, metallurgical, infrastructure, permitting, and other relevant factors that are different than the factors used in the PFS and described in this report is shown by the sensitivity analysis in Item 22.0 Except for commodities prices, all