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Newmont Corporation <br /> July 23, 2020 <br /> Page 10 <br /> of BF5 is still necessary due to estimated groundwater inflow to the West Pit from the North Pit <br /> area and the Precambrian unit, which results in higher groundwater levels in the West Pit area. In <br /> these scenarios, alluvial wells M32 and M33 can assist in capturing minor groundwater flow rates <br /> migrating from the West Pit,but this captured groundwater will also require treatment. <br /> In summary, six different remediation scenarios were simulated in addition to the no-action <br /> simulation. Results for the simulations indicate that there will only be a significant reduction in <br /> water handling and treatment of water from the West Pit with a partial or total cutoff wall and <br /> minimal pumping of BF5 and the current alluvial wells. However, this conclusion is based on the <br /> cutoff wall being effective in minimizing inflow to the West Pit from the Rito Seco alluvium on <br /> the east side of the pit. Therefore, the key to a more effective remediation strategy is addressing <br /> the inflow from the Rito Seco on the east side of the pit. This likely still requires some pumping <br /> of BF5 but at a much lower rate than what is currently having to be pumped. <br />