Glencore International AG

EPA says Columbia Falls plant site needs cleanup

A closed aluminum plant in Columbia Falls was designated by federal officials on Wednesday as an environmentally-contaminated Superfund site that needs to be cleaned up.

The Environmental Protection Agency announcement will allow further investigation of the Columbia Falls Aluminum Co. to determine its risk to human health, agency officials said.

The plant, located on 960 acres on the banks of the Flathead River near Glacier National Park, operated from 1955 to 2009. It's owned by Glencore, a Swiss commodities firm.

The site became eligible for Superfund status after potentially hazardous materials were discovered in soil, groundwater and surface water at the plant...

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