Superfund 101: Mark Thompson and The Butte Mine Flooding Operable Unit

When Atlantic Richfield shut the pumps off at the Kelley Mine in 1982, water began to fill the Berkeley pit and the 10,000 miles of tunnels underneath Butte. This toxic network of waterways became BMFOU - the Butte Mine Flooding Operable Unit. AR and Montana Resources are cosigners of the consent decree and therefore responsible for the maintenance of the sight. Mark Thompson, VP of Environmental Affairs for MR, goes over the scope of work and details at the operable unit in this episode of Superfund 101.