Smelter Hill Uplands Claim and Restoration Plan Map (PDF)2008 Restoration PlanFrom the 1880s to 1980, large volumes of hazardous substances were released into the air by the Anaconda Smelter. These emissions were deposited onto the land, resulting in severe loss [...]

On January 17, 2015, the Poplar Pipeline, which is owned and operated by Bridger Pipeline, LLC, of Casper, Wyoming, discharged at least 30,000 gallons of Bakken crude oil into the Yellowstone River just upstream of Glendive, Montana. At the [...]

The 2008 Montana v. ARCO Consent Decree allocated $28.1 million (M), plus interest, to restore, replace or acquire the equivalent of the injured groundwater and surface water of Butte Area One. The Governor created the Butte Natural Resource Damage Restoration Council [...]

Site HistoryIn May 2004, the Record of Decision (ROD) for the Clark Fork River Operable Unit (CFROU) was released by the United States Environmental Protection Agency (EPA 2004). The 2008 Montana v. ARCO Consent Decree (CD) allocated $26.7 million (M), [...]

History / Background The East Helena ASARCO Smelter site is located in the City of East Helena in Lewis and Clark County, Montana. The site includes a 140-acre former lead smelter and about 2,000 acres of surrounding lands, including [...]

History / Background The Libby Asbestos Superfund Site is located in northwestern Montana near the town of Libby. The Zonolite Company began mining vermiculite at the site in the 1920s and the mine was purchased by W.R. Grace in [...]

Site BackgroundThe remedy and restoration of Silver Bow Creek (SBC) has been ongoing since 1999 as part of the Superfund actions coordinated by Montana Department of Environmental Quality (DEQ) in consultation with the U.S. Environmental Protection Agency (EPA). In 2000 [...]

Site BackgroundThe Smurfit-Stone/Frenchtown Mill Site (the Site), on the Clark Fork River in western Montana, was a paper mill from 1957 to 2010. Industrial activities at the mill resulted in the release of hazardous substances into the floodplain and exposure of [...]

History/Background The Upper Blackfoot Mining Complex (UBMC) is in the historic Heddleston Metal Mining District in Lewis and Clark County, approximately 15 miles east of Lincoln, Montana. The site is within the headwaters of the Upper Blackfoot River and [...]

  History/Background Aquatic and Terrestrial Restoration In 1983, the State of Montana (State) filed a lawsuit against the Atlantic Richfield Co., now BP-Atlantic Richfield (BP-AR), for injuries to the State’s natural resources in the Upper Clark Fork River Basin [...]

On July 1, 2011, a 12-inch diameter pipeline (Silvertip Pipeline) owned by ExxonMobil Pipeline Company ruptured near Laurel, Montana, resulting in the discharge of crude oil into the Yellowstone River and surrounding floodplain. It is estimated, approximately 63,000 gallons [...]