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5.3.2.6 No. 4 Dam Reservoir(Eagle Park Reservoir) <br /> Description: This reservoir is presently serving as a sediment pond for collection and sediment <br /> removal for stormwater runoff that occurs downgradient of the surrounding interceptor canals. A <br /> major reclamation project involving the removal of old oxide tailing is planned for the summer <br /> of 1995. After completion of the reclamation work, the reservoir will store clean water and will <br /> be referred to as Eagle Park Reservoir. <br /> Location: No. 4 Dam Reservoir is located at the northwestern base of Chalk Mountain and <br /> downstream from Robinson Lake. <br /> Spill Potential: Low. <br /> Potential Volume Spilled: Because the water level is maintained as low as possible in <br /> conjunction with the tailing removal and reclamation project, there is little chance for <br /> overtopping the No. 4 Dam. Most likely, the only chance for a scenario where overtopping could <br /> occur is in the unlikely event the watershed received a probable maximum flood (PMF). <br /> Prevention and Control: Prevention of spills from No. 4 Dam is contingent upon maintaining <br /> the water level as low as possible. As stated above, this is being done to facilitate tailing <br /> removal and reclamation. <br /> Countermeasures: In the unlikely event of an overflow, the existing pump system in <br /> conjunction with portable pumps would be used to transfer industrial water back to the Robinson <br /> Tailing Pond in order to reduce impacts on the Eagle River. <br /> Nearest Clean-up Equipment: Portable engine-driven pumps are located in the Precon <br /> Building (or with the Maintenance Crew) and flexible plastic pipe with necessary couplings are <br /> located in the Warehouse. <br /> Monitoring: Visual checks of the reservoir are made daily during operation of the mine. When <br /> the mine is idle, the No. 4 Dam Reservoir is checked weekly. <br /> Reporting: Any spill of industrial water should be documented immediately using the "Spill <br /> Incident Report" form (Appendix 1) and given to the Environmental Coordinator. Any spill <br /> which threatens waters of the State of Colorado is subject to the reporting requirements given in <br /> Sections 4.2, 4.3, and 4.4 of this SPCC Plan. <br /> 54 <br />