EPA has finalized an administrative order on consent with Sheffield Ranch Corp. and Fred Wacker resolving alleged violations of the Clean Water Act related to unpermitted bank stabilization and discharges to the Yellowstone River. Work included placement of 260 cubic yards of rock below the ordinary high water mark along ~200 linear feet of the river without authorization from the U.S. Army Corps of Engineers. The Respondents have agreed to submit and implement a restoration plan to remedy the impacts of the unauthorized activities and ensure the long-term stability of the riverbank. They have also agreed to purchase 838.4 mitigation credits from the Lower Middle Yellowstone Mitigation Bank.