The Environmental Protection Agency made its strongest case yet for a “waste in place” solution for the cleanup of the Columbia Falls Aluminum Co. Superfund site during a public meeting last week.

There is no hope for recovering the lost elevation and storage capacity of the aquitard, which is a layer that restricts groundwater flow. “The subsidence is permanent, irreversible and will ...

There is no hope for recovering the lost elevation and storage capacity of the aquitard, which is a layer that restricts ...

Last year, when the U.S. Environmental Protection Agency (EPA) released its proposed cleanup plan for the Columbia Falls ...