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Discharge of Water into an Underground Mine <br /> TR-71, which proposed the diversion of water from sediment ponds into underground mine <br /> workings, was withdrawn by NECC. The State of Colorado Division of Water Resources <br /> (DWR) stated that this would be an"out of priority diversion of surface water tributary to the <br /> Middle Fork of the Purgatory River." Based on the DWR decision, the Division indicated to <br /> NECC that we could not approve this revision. <br /> Stream Buffer Zones <br /> The Division has approved underground mining panels under the Middle Fork of the Purgatoire <br /> River. This decision is based on a finding that the original stream channel will not be impacted <br /> (and restoration and revegetation will not be necessary) and water quality and quantity shall not <br /> be adversely affected. The Division has also found that the haul road bridge across the river will <br /> not have adverse impacts on the function of the river in terms of hydraulics or ecology <br /> (4.05.18(1)). <br /> IV. Topsoil <br /> No specific approvals are granted for this section. <br /> V. Sealing of Drilled Holes and Underground Openings <br /> No specific approvals are granted for this section. <br /> VI. Use of Explosives <br /> New Elk is an underground mine, and the use of explosives is very limited. No specific <br /> approvals are granted for this section. <br /> VII. Disposal of Excess Spoil <br /> New Elk is an underground mine, and this section is not relevant to the New Elk Mine. <br /> VIIL Coal Mine Waste Banks <br /> The Division has approved plans for use, construction, and maintenance of four coal mine waste <br /> disposal areas (4.10.1(1)): <br /> • The Development Coal Waste Pile (aka Development Waste Pile) is located southwest of <br /> New Elk Mine <br /> November 2019 Findings for RN-07 <br /> 14 <br />