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EAGLE RIVER DRAINAGE <br /> Climax operations components within the Eagle River drainage <br /> include portions of tailing delivery and deposition systems, <br /> industrial and domestic water circuits, and facilities for water <br /> collection and storage. Climax does not discharge any process <br /> waters to the Eagle River drainage , and therefore , does not <br /> carry a Colorado PDES Permit for this basin. <br /> Tailing and Industrial Water Systems <br /> The Robinson tailing pond, with a surface area of approximately <br /> 667 acres , is tributary to both the Eagle River and Tenmile <br /> Creek drainages. The two tailing dams (No. 1 dam and No. 2 dam) <br /> used to impound the Robinson pond lie within the Eagle and Ten- <br /> mile drainages respectively. Surface drainage is routed to the <br /> north into the Tenmile basin as much as possible. Surface and <br /> subsurface drainage entering the Eagle River basin is captured <br /> in Robinson Lake. <br /> Robinson Lake, a permanent water storage facility, is utilized <br /> for storage of decreed water rights with a decreed capacity of <br /> 3136 acre-feet over approximately 72 acres. In addition, the <br /> lake acts as part of the mill water return system for water <br /> recycled from the tailing ponds. When the mine is in operation, <br /> water is pumped from Robinson Lake to storage tanks at the mill. <br /> After usage in the mill, this water is returned to the cycle via <br /> tailing slurry. When the lake reaches storage capacity for any <br /> reason, overflow is pumped to the Tenmile drainage for treatment <br /> and ultimate discharge. <br /> The No. 4 dam reservoir, directly below Robinson Lake, is the <br /> last link in the water system in the Eagle River drainage. This <br /> reservoir covers approximately 46 acres and was last used to <br /> store oxide tailing in the 1960 ' s . The reservoir is being <br /> slowly dewatered by pumping to the industrial water circuit in <br /> the Robinson Lake system. Although No. 4 dam reservoir has <br /> been engineered for permanent water storage and is listed as <br /> such, water is not presently being stored in this facility. The <br /> facility presently has the capability of storing 4, 000 acre feet <br /> of water. <br /> Non-process Water Systems <br /> Chalk Mountain Reservoir is located adjacent to Robinson Lake <br /> and is a permanent water storage site with a decreed capacity of <br /> 201 acre-feet. The source of water for this facility is natural <br /> runoff . Water from this reservoir is pumped to the Climax <br /> domestic water filtration and distribution system. Chalk Moun- <br /> tain Reservoir supports a healthy trout population and is a <br /> fishing and picnic area for employees and their families. <br /> G-3 <br />