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DEPARTMENT OF THE ARMY U.S. ARMY CORPS OF ENGINEERS, SACRAMENTO DISTRICT 1325 J STREET SACRAMENTO CA 95814-2922 REPLY TO ATTENTION OF March 30, 2016 Regulatory Division SPK -2016-00208 ,PR 0 S 20 Attn: Mr. Clayton Wein B MIKA OF RECLAMATION Colorado Division of Reclamation, Mining and Safety VNING AND SAFETY 1313 Sherman Street Denver, Colorado 80203 Dear Mr. Wein: We are responding to the Colorado Division of Reclamation, Mining and Safety's March 4, 2016 request for comments on the C.B. Minerals Company's renewal application for the Coal Ridge No. 1 Mine (Permit No. C-1984-065). The underground project site is located approximately seven miles West of Glenwood Springs, including portions of Sections 1 and 12, Township 6 South, Range 91 West and portions of Sections 5,6,7,8,9, 15 and 16, Township 6 South, Range 90 West, at approximately Latitude 39.54290, Longitude -107.48450in Garfield County, Colorado. The Corps of Engineers' jurisdiction within the study area is under the authority of Section 404 of the Clean Water Act for the discharge of dredged or fill material into waters of the United States. Waters of the United States include, but are not limited to, rivers, perennial or intermittent streams, lakes, ponds, seeps, springs and wetlands. Project features that result in the discharge of dredged or fill material into waters of the United States will require Department of the Army authorization prior to starting work. If this project will impact aquatic resources, the applicant should identify them and prepare a wetland delineation, in accordance with "Minimum Standards for Acceptance of Preliminary Wetlands Delineations" and "Final Map and Drawing Standards for the South Pacific Division Regulatory Program" under "Jurisdiction" on our website at the address below, and submit it to this office for verification. A list of consultants that prepare wetland delineations and permit application documents is also available on our website at the same location. The range of alternatives considered for this project should include alternatives that avoid impacts to wetlands or other waters of the United States. Every effort should be made to avoid project features which require the discharge of dredged or fill material into waters of the United States. In the event it can be clearly demonstrated there are no practicable alternatives to filling waters of the United States, mitigation plans should be developed to compensate for any unavoidable aquatic resource losses resulting from project implementation.