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Binns, Janet <br />From: Light, Erin <br />Sent: Thursday, January 07, 2010 1:23 PM <br />To: Binns, Janet <br />Subject: RE: Proposed coffer dams in Fish Creek-Routt County <br />Janet - We do not have any permitting requirements and so long as the flows are not diminished there should not be a <br />problem with downstream water users. <br />Erin Light <br />From: Binns, Janet <br />Sent: Thursday, January 07, 2010 10:06 AM <br />To: Light, Erin <br />Subject: Proposed coffer dams in Fish Creek-Routt County <br />Good Morning Erin, <br />The Division has received a proposed revision for the Foidel Creek Mine in Routt County that proposes to install a <br />waterline in T5N, R87W, S %2 Sec. 23, and SW % Sec. 24. This waterline would cross Fish Creek, which is a perennial <br />stream. The operator, Twentymile Coal Company, is proposing to temporarily dam Fish Creek (Paul Perri called these <br />Coffer dams), both upstream and downstream of the work area, and pump the flow from Fish Creek from the upstream <br />pool to the downstream pool. This pumping around the work area would be-very temporary just during the time it <br />would take the company to install the 14" HDPE waterline. <br />My question to you, Are there permitting actions the operator needs to conduct with your office prior to conducting this <br />work? If so please let me know what actions Twentymile Coal Company needs to conduct, or what information do they <br />need to supply to your office. They do not propose to diminish flows, however, they also have not informed us of the <br />size of the pumps to be used. Please let me know so I can direct the operator to provide the required information. <br />Thanks for your help. <br />JRV,et I-t. g?wws <br />Environmental Protection Specialist II <br />Colorado Division of Reclamation Mining and Safety <br />phone: (303) 866-3567 ext. 8107 <br />fax: (303) 832-8106