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About the Project

In accordance with the Council on Environmental Quality (CEQ) regulations and the Department of the Interior (DOI) procedures for implementing the National Environmental Policy Act of 1969 (NEPA) 42 U.S.C. 43332(2) (C), the Office of Surface Mining Reclamation and Enforcement (OSMRE), Western Region has prepared an Environmental Assessment (EA) to evaluate the environmental effects of the proposed mining plan modification for the Duvall Tract at the Cordero Rojo Mine. OSMRE is responsible for reviewing plans to conduct coal mining and reclamation operations on lands containing leased federal coal. Pursuant to 30 CFR 746, OSMRE must prepare and submit to the Assistant Secretary for Land and Minerals Management (ASLM), a decision document recommending approval, conditional approval, or disapproval of the proposed mining plan modification. ASLM approval of a mining plan modification would authorize mining activities to produce an estimated 55.8 million tons (Mt) of coal at an estimated rate of 20 Mt per year from Cordero Rojo federal coal lease WYW174407 and add an additional 852.1 acres of surface disturbance. Cordero Mining Company (CMC) owns and operates the Cordero Rojo Coal Mine, which is located in Campbell County, Wyoming, approximately 15 miles south-southeast of Gillette, Wyoming, east of Wyoming State Highway 59, in central Campbell County, Wyoming.

The EA analyzes the potential direct, indirect and cumulative impacts to the environment from the Project. Through the EA process, OSMRE will determine whether or not there are significant environmental impacts. An environmental impact statement (EIS) will be prepared if the EA identifies significant impacts. OSMRE will prepare and submit to the ASLM a mining plan decision document recommending approval, disapproval, or conditional approval of the mining plan. The OSMRE Director will make a recommendation to the Assistant Secretary for Land and Minerals Management (ASLM) on the Federal Mining Plan Modification, and the ASLM will approve, approve with conditions, or disapprove the Federal Mining Plan Modification as required under the MLA.

Page Last Modified/Reviewed: 7/5/17

Western Region OSMRE, PO Box 25065, Lakewood, CO 80225-0065
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