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About the Project

The U.S. Department of the Interior (DOI), Office of Surface Mining Reclamation and Enforcement (OSMRE), Western Region Office, has prepared an environmental assessment (EA) for a Federal mining plan modification for the Spring Creek Mine (SCM) lease by modification (LBM) to Federal coal lease MTM-069782 (the Project). In accordance with the Mineral Leasing Act of 1920 (MLA), The DOI Assistant Secretary for Land and Minerals Management (ASLM) must approve the Project before any mining and reclamation can occur on lands containing leased Federal coal. The LBM application was filed with the Bureau of Land Management (BLM) by Spring Creek Coal LLC (SCC) on May 17, 2007. As a result, the BLM prepared a lease modification EA# MT-DOI-BLM-MT-020-2010-29 in cooperation with the OSMRE and the Montana Department of Environmental Quality (MDEQ) which was published in February 2010. BLM subsequently issued a finding of no significant impact for the lease modification and the LBM was issued on July 1, 2010. MDEQ has received an application for a major permit revision (TR1) for the SCM Permit C1979012, including mining portions of LBM MTM-069782.

OSMRE has prepared an EA to evaluate the environmental impacts resulting from the Project, pursuant to the requirements of the National Environmental Policy Act of 1969 (NEPA). The SCM is located approximately 32 miles north of Sheridan, Wyoming. The SCM uses a combination of dragline and truck shovel mining methods. The amount of remaining recoverable Federal coal authorized for removal within the currently approved Federal mining plan is approximately 122.4 million tons (mmt). The Project proposes to add 498.11 Federal coal acres and 53.6Mt of Federal coal to the approved Federal mining plan. The average SCM production rate is 14 million tons per year (Mtpy) and the maximum production rate is 30Mtpy. The Project would not change the average or maximum production rate. SCM started operation in 1980 and the mine will continue to operate until 2027. The Project would extend the life of the mine 4 years.

The EA discloses the potential for direct, indirect and cumulative impacts to the environment from the Project. The EA updates, clarifies, and provides new and additional environmental information for the Project. Based on the findings in the EA, the OSMRE Director will make a recommendation to the 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: 2/12/20

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