List of Superfund sites in Montana
Encyclopedia
This is a list of Superfund sites in Montana designated under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) environmental law. The CERCLA federal law of 1980 authorized the United States Environmental Protection Agency
United States Environmental Protection Agency
The U.S. Environmental Protection Agency is an agency of the federal government of the United States charged with protecting human health and the environment, by writing and enforcing regulations based on laws passed by Congress...

 (EPA) to create a list of polluted
Pollution
Pollution is the introduction of contaminants into a natural environment that causes instability, disorder, harm or discomfort to the ecosystem i.e. physical systems or living organisms. Pollution can take the form of chemical substances or energy, such as noise, heat or light...

 locations requiring a long-term response to clean-up hazardous material contaminations. These locations are known as Superfund
Superfund
Superfund is the common name for the Comprehensive Environmental Response, Compensation, and Liability Act of 1980 , a United States federal law designed to clean up sites contaminated with hazardous substances...

 sites, and are placed on the National Priorities List
National Priorities List
The National Priorities List is the list of hazardous waste sites in the United States eligible for long-term remedial action financed under the federal Superfund program. Environmental Protection Agency regulations outline a formal process for assessing hazardous waste sites and placing them on...

 (NPL). The NPL guides the EPA in "determining which sites warrant further investigation" for environmental remediation. As of March 10, 2011, there were 16 Superfund sites on the National Priorities List in Montana
Montana
Montana is a state in the Western United States. The western third of Montana contains numerous mountain ranges. Smaller, "island ranges" are found in the central third of the state, for a total of 77 named ranges of the Rocky Mountains. This geographical fact is reflected in the state's name,...

. One additional site has been proposed for entry on the list. No sites have yet been removed from the list following clean up.

Superfund sites

CERCLIS ID Name County Reason Proposed Listed Constructioncompleted Partiallydeleted Deleted
MTD093291599 Anaconda Copper Mine Smelter and Refinery Cascade
Cascade County, Montana
-National protected areas:*Benton Lake National Wildlife Refuge*Lewis and Clark National Forest -Economy:Malmstrom Air Force Base is a driving force in the regional economy...

Soil and surface water contamination by arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

, lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

 and other heavy metals.
04/03/2010 03/10/2011
MTD093291656 Anaconda Co. Smelter Site Deer Lodge
Deer Lodge County, Montana
-National protected areas:*Beaverhead National Forest *Deerlodge National Forest -Demographics:As of the census of 2000, there were 9,417 people, 3,995 households, and 2,524 families residing in the county. The population density was 13 people per square mile . There were 4,958 housing units at an...

Soil and groundwater contamination by arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

, copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

, cadmium
Cadmium
Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Similar to zinc, it prefers oxidation state +2 in most of its compounds and similar to mercury it shows a low...

, lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

 and zinc
Zinc
Zinc , or spelter , is a metallic chemical element; it has the symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table. Zinc is, in some respects, chemically similar to magnesium, because its ion is of similar size and its only common oxidation state is +2...

.
12/30/1982 09/08/1983
MTD982572562 Basin Mining Area Jefferson
Jefferson County, Montana
-National protected areas:*Deerlodge National Forest *Helena National Forest -Demographics:As of the census of 2000, there were 10,049 people, 3,747 households, and 2,847 families residing in the county. The population density was 6 people per square mile . There were 4,199 housing units at an...

Mine wastes contaminated Basin and Cataract Creeks and the soils within the town of Basin
Basin, Montana
Basin is a census-designated place in Jefferson County, Montana, United States. It lies about southeast of the Continental Divide in a high narrow canyon along Interstate 15 about halfway between Butte and Helena. Basin Creek flows roughly north to south through Basin and enters the Boulder River...

. Contaminants include arsenic, cadmium, copper, lead and other metals.
07/22/1999 10/22/1999
MT6122307485 Barker Hughesville Mining District Cascade
Cascade County, Montana
-National protected areas:*Benton Lake National Wildlife Refuge*Lewis and Clark National Forest -Economy:Malmstrom Air Force Base is a driving force in the regional economy...

 and Judith Basin
Judith Basin County, Montana
-Demographics:As of the census of 2000, there were 2,329 people, 951 households, and 661 families residing in the county. The population density was -Demographics:...

Ground water, sediment, surface water, and soils are contaminated with metals including zinc
Zinc
Zinc , or spelter , is a metallic chemical element; it has the symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table. Zinc is, in some respects, chemically similar to magnesium, because its ion is of similar size and its only common oxidation state is +2...

 and arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

.
12/1/2000 09/13/2001
MTD986066025 Burlington Northern Livingston Shop Complex Park
Park County, Montana
Park Counties in Montana and Wyoming are among the very few pairs of counties in the United States with the same name to border each other across state lines.-National protected areas:* Custer National Forest * Gallatin National Forest...

Petroleum hydrocarbons and volatile organic compound
Volatile organic compound
Volatile organic compounds are organic chemicals that have a high vapor pressure at ordinary, room-temperature conditions. Their high vapor pressure results from a low boiling point, which causes large numbers of molecules to evaporate or sublimate from the liquid or solid form of the compound and...

s have contaminated the soil and the Livingston Aquifer.
08/23/1994
MT0001096353 Carpenter-Snow Creek Mining District Cascade
Cascade County, Montana
-National protected areas:*Benton Lake National Wildlife Refuge*Lewis and Clark National Forest -Economy:Malmstrom Air Force Base is a driving force in the regional economy...

Groundwater, soil and watercourse contamination by arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

 and heavy metals.
12/1/2000 09/13/2001
MTD006230346 East Helena Lewis and Clark
Lewis and Clark County, Montana
-National protected areas:* Flathead National Forest * Helena National Forest * Lewis and Clark National Forest * Lolo National Forest * Rocky Mountain Front Conservation Area -Demographics:...

Soil, surface water and groundwater contamination by lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

, other heavy metals and arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

 at ASARCO
ASARCO
ASARCO LLC is a mining, smelting, and refining company based in Tucson, Arizona that mines and processes primarily copper. The company, a subsidiary of Grupo México, is currently in Chapter 11 bankruptcy...

 lead smelter.
09/08/1983 09/21/1984
MT0012694970 Flat Creek IMM Mineral
Mineral County, Montana
-Demographics:As of the census of 2000, there were 3,884 people, 1,584 households, and 1,067 families residing in the county. The population density was 3 people per square mile . There were 1,961 housing units at an average density of 2 per square mile...

Soil, groundwater and surface water contamination by arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

, antimony
Antimony
Antimony is a toxic chemical element with the symbol Sb and an atomic number of 51. A lustrous grey metalloid, it is found in nature mainly as the sulfide mineral stibnite...

, lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

 and manganese
Manganese
Manganese is a chemical element, designated by the symbol Mn. It has the atomic number 25. It is found as a free element in nature , and in many minerals...

 from mine tailings, some of which was used as fill and construction material in the nearby town of Superior
Superior, Montana
Superior is a town in and the county seat of Mineral County, Montana, United States. The population was 893 at the 2000 census. Superior was named after its founders' hometown of Superior, Wisconsin in 1869...

.
04/09/2009 09/23/2009
MTD006232276 Idaho Pole Gallatin
Gallatin County, Montana
-National protected areas:* Gallatin National Forest * Yellowstone National Park -Demographics:As of the census of 2000, there were 67,831 people, 26,323 households, and 16,188 families residing in the county. The population density was 26 people per square mile . There were 29,489 housing units...

Groundwater, sediment, surface water and soil contamination by PCP
Pentachlorophenol
Pentachlorophenol is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names...

, PAHs and dioxins from wood treatment plant.
10/15/1984 06/10/1986 03/26/1998
MT0009083840 Libby Asbestos Lincoln
Lincoln County, Montana
-National protected areas:* Pacific Northwest National Scenic Trail *Flathead National Forest *Kaniksu National Forest *Kootenai National Forest -Demographics:...

Asbestos
Asbestos
Asbestos is a set of six naturally occurring silicate minerals used commercially for their desirable physical properties. They all have in common their eponymous, asbestiform habit: long, thin fibrous crystals...

 contamination from vermiculite
Vermiculite
Vermiculite is a natural mineral that expands with the application of heat. The expansion process is called exfoliation and it is routinely accomplished in purpose-designed commercial furnaces. Vermiculite is formed by weathering or hydrothermal alteration of biotite or phlogopite...

 processing plants.
02/26/2002 10/24/2002
MTD980502736 Libby Ground Water Lincoln
Lincoln County, Montana
-National protected areas:* Pacific Northwest National Scenic Trail *Flathead National Forest *Kaniksu National Forest *Kootenai National Forest -Demographics:...

Groundwater, sediment, surface water and soil contamination by PCP
Pentachlorophenol
Pentachlorophenol is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names...

, PAHs and heavy metals from the wood and paper industry.
12/30/1982 09/08/1983 09/20/1993
MT0007623052 Lockwood Solvents Yellowstone
Yellowstone County, Montana
-National protected areas:* Nez Perce National Historical Park * Pompeys Pillar National Monument-Demographics:As of the census of 2000, there were 129,352 people, 52,084 households, and 34,219 families residing in the county. The population density was 49 people per square mile . There were...

Groundwater, sediment, surface water and soil contamination by VOCs. 05/11/2000 12/01/2000
MTD980717565 Milltown Reservoir Sediments Missoula
Missoula County, Montana
-National protected areas:*Bitterroot National Forest *Flathead National Forest *Lolo National Forest *Rattlesnake National Recreation Area-Demographics:...

Groundwater and reservoir sediments containation by arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

 and copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

 from historic mining activity.
12/30/1982 09/08/1983
MTD006230635 Montana Pole Silver Bow
Silver Bow County, Montana
-National protected areas:*Beaverhead National Forest *Deerlodge National Forest -Demographics:As of the census of 2000, there were 34,606 people, 14,432 households, and 8,933 families residing in the county. The population density was 48 people per square mile . There were 16,176 housing units at...

Groundwater, sediment, surface water and soil contamination by PCP
Pentachlorophenol
Pentachlorophenol is an organochlorine compound used as a pesticide and a disinfectant. First produced in the 1930s, it is marketed under many trade names...

, PAHs, dioxins, and furan
Furan
Furan is a heterocyclic organic compound, consisting of a five-membered aromatic ring with four carbon atoms and one oxygen. The class of compounds containing such rings are also referred to as furans....

s from wood treatment.
06/10/1986 07/22/1987 09/27/2001
MTD021997689 Mouat Industries Stillwater
Stillwater County, Montana
-National protected areas:*Custer National Forest *Hailstone National Wildlife Refuge*Halfbreed Lake National Wildlife Refuge-Demographics:...

Soils and groundwater were contaminated with hexavalent chromium
Hexavalent chromium
Hexavalent chromium refers to chemical compounds that contain the element chromium in the +6 oxidation state. Virtually all chromium ore is processed via hexavalent chromium, specifically the salt sodium dichromate. Approximately of hexavalent chromium were produced in 1985...

.
10/15/1984 06/10/1986 09/27/1996 proposed03/24/2009
MTD980502777 Silver Bow Creek/Butte
Berkeley Pit
The Berkeley Pit is a former open pit copper mine located in Butte, Montana, United States. It is one mile long by half a mile wide with an approximate depth of . It is filled to a depth of about with water that is heavily acidic , about the acidity of cola or lemon juice...

Silver Bow
Silver Bow County, Montana
-National protected areas:*Beaverhead National Forest *Deerlodge National Forest -Demographics:As of the census of 2000, there were 34,606 people, 14,432 households, and 8,933 families residing in the county. The population density was 48 people per square mile . There were 16,176 housing units at...

Groundwater, surface water and soil are contaminated with arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

, copper
Copper
Copper is a chemical element with the symbol Cu and atomic number 29. It is a ductile metal with very high thermal and electrical conductivity. Pure copper is soft and malleable; an exposed surface has a reddish-orange tarnish...

, zinc
Zinc
Zinc , or spelter , is a metallic chemical element; it has the symbol Zn and atomic number 30. It is the first element in group 12 of the periodic table. Zinc is, in some respects, chemically similar to magnesium, because its ion is of similar size and its only common oxidation state is +2...

, cadmium
Cadmium
Cadmium is a chemical element with the symbol Cd and atomic number 48. This soft, bluish-white metal is chemically similar to the two other stable metals in group 12, zinc and mercury. Similar to zinc, it prefers oxidation state +2 in most of its compounds and similar to mercury it shows a low...

, and lead
Lead
Lead is a main-group element in the carbon group with the symbol Pb and atomic number 82. Lead is a soft, malleable poor metal. It is also counted as one of the heavy metals. Metallic lead has a bluish-white color after being freshly cut, but it soon tarnishes to a dull grayish color when exposed...

 from mining and smelting. Silver Bow Creek and the Clark Fork River contain metals from the cities of Butte
Butte, Montana
Butte is a city in Montana and the county seat of Silver Bow County, United States. In 1977, the city and county governments consolidated to form the sole entity of Butte-Silver Bow. As of the 2010 census, Butte's population was 34,200...

 to Milltown. Mine tailings in the creek and river have caused fish kills in the river.
12/30/1982 09/08/1983
MTSFN7578012 Upper Tenmile Creek Lewis and Clark
Lewis and Clark County, Montana
-National protected areas:* Flathead National Forest * Helena National Forest * Lewis and Clark National Forest * Lolo National Forest * Rocky Mountain Front Conservation Area -Demographics:...

Heavy metal and arsenic
Arsenic
Arsenic is a chemical element with the symbol As, atomic number 33 and relative atomic mass 74.92. Arsenic occurs in many minerals, usually in conjunction with sulfur and metals, and also as a pure elemental crystal. It was first documented by Albertus Magnus in 1250.Arsenic is a metalloid...

 contamination from mining.
07/22/1999 10/22/1999

See also


External links

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