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Montana Superfund (NPL) Sites

About Superfund

Clicking on the site name should take you directly to a U.S. EPA summary page for that site. If not, please let me know.

Active Sites

Jump to: Deleted Sites


ACM Smelter and Refinery

Location: Black Eagle/Great Falls, Cascade County

Contaminants: Antimony Arsenic Cadmium Chromium Cobalt Copper Lead Manganese Mercury Nickel Selenium Silver Zinc


Anaconda Aluminum Co. Columbia Falls Reduction Plant

Location: Columbia Falls, Flathead County

Contaminants: Arsenic Chromium Cyanide Fluoride Lead Selenium


Anaconda Smelter

Location: Anaconda, Deer Lodge County

Contaminants: Arsenic Beryllium Cadmium Copper Lead Zinc


Barker Hughesville Mining District

Location: Cascade and Judith Basin Counties

Contaminants: Arsenic Zinc


Basin Mining Area

Location: Basin, Jefferson County

Contaminants: Arsenic Cadmium Copper Lead


Billings PCE

Location: Billings, Yellowstone County

Contaminants: Tetrachloroethene


Carpenter-Snow Creek Mining District

Location: Cascade County

Contaminants: Arsenic Lead


East Helena

Location: East Helena, Lewis and Clark County

Contaminants: Arsenic Heavy Metals Lead


Flat Creek IMM

Location: Superior, Mineral County

Contaminants: Antimony Arsenic Lead Manganese


Idaho Pole

Location: Bozeman, Gallatin County

Contaminants: Dioxins PAHs Pentachlorophenol


Libby Asbestos

Location: Libby, Lincoln County

Contaminants: Asbestos


Libby Groundwater

Location: Libby, Lincoln County

Contaminants: Dioxins Heavy Metals PAHs Pentachlorophenol


Lockwood Solvent Groundwater Plume

Location: Billings, Yellowstone County

Contaminants: Carbon Tetrachloride cis-1,2-Dichloroethene Tetrachloroethene Trichloroethene Vinyl Chloride


Milltown Reservoir Sediments / Clark Fork River

Location: Milltown, Missoula County

Contaminants: Arsenic Copper


Montana Pole and Treating

Location: Butte, Silver Bow County

Contaminants: Dioxins Furans Metals Pentachlorophenol VOCs


Mouat Industries

Location: Columbus, Stillwater County

Contaminants: Chromium


Silver Bow Creek/Butte Area

Location: Butte, Jefferson County

Contaminants: Arsenic Cadmium Copper Lead Zinc


Upper Tenmile Creek Mining Area

Location: Near Helena, Lewis and Clark County

Contaminants: Arsenic Copper Lead Zinc


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