GILLETTE - A 25,000-gallon oil and discharged water spill into the North Fork of the Powder River in northern Wyoming will cost Citation Oil and Gas Corp. $860,000 in penalties and other costs.
The Environmental Protection Agency and the U.S. Department of Justice announced an agreement with the company.
The spill occurred in June 2004 in Johnson County when a flow line ruptured. The spill affected six miles of the river, coating the banks in some places and some wildlife.
Citation compliance manager Lee Ann Elsom said Friday that the spill was unintentional and that the company has replaced the underground flow line and cleaned up the area.
The agreement requires Citation to improve its spill prevention plan and to install new spill prevention and monitoring measures.