Operable Units

Operable Units at the Libby, MT Superfund SiteThe EPA maintains a list of documents and updates for the 8 Operable Units (OUs) in the Libby Superfund site. These OU documents contain maps of each OU area, resident and analyst commentary, data reports and more for each Operable Unit in the Libby Superfund Site cleanup area. The links below will take you to the constantly updated EPA website where you can view various files for each of the 8 Libby Operable Units.

 OU1

Former export plant (including Riverfront Park)
 View EPA Website for OU1

 OU2

Former screening plant and surrounding properties
 View EPA Website for OU2

 OU3

Former vermiculite mine
 View EPA Website for OU3

 OU4

Properties in and around the Libby area
 View EPA Website for OU4

 OU5

Former Stimson Lumber parcel
 View EPA Website for OU5

 OU6

BNSF railroad
 View EPA Website for OU6

 OU7

Properties in and around the Troy area
 View EPA Website for OU7

 OU8

State highways
 View EPA Website for OU8

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Libby Vermiculite Learn what Libby Vermiculite looks like and what to do if you find it on your property.

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