History/Background
Aquatic and Terrestrial Restoration
In 1983, the State of Montana (State) filed a lawsuit against the Atlantic Richfield Co., now BP-Atlantic Richfield (BP-AR), for injuries to the State’s natural resources in the Upper Clark Fork River Basin (UCFRB), which extends from Butte to Milltown. The lawsuit was brought under federal and state Superfund laws and sought damages from ARCO. Decades of extensive mining and mineral processing by ARCO and its predecessors in the Butte and Anaconda areas released hazardous substances that injured natural resources and deprived Montanans of their use. The natural resources injured included groundwater, aquatic, and terrestrial resources.
The State settled this lawsuit through a series of settlement agreements (known as “consent decrees”) completed in 1999, 2005, and 2008. The 1999 settlement established the Upper Clark Fork River Basin Restoration Fund (UCFRB Restoration Fund). See Milltown associated with the 2005 Settlement and for the 2008 settlement, see Anaconda Uplands, Butte Area One, and the Clark Fork River Operable Unit.
The UCFRB Restoration Fund contains no Montana taxpayer funds, is administered by the NRDP for the Governor of Montana (who is the trustee for natural resources of the State) and must be used to restore, rehabilitate, replace, or acquire the equivalent of the injured natural resources of the UCFRB. The Governor established the UCFRB Remediation and Restoration Citizens Advisory Council to facilitate public dialogue, promote public understanding, and advise the Governor with respect to issues involving remediation and restoration efforts in the UCFRB.
In 2012, an estimated $65.5 million was initially available for funding of projects to improve aquatic and terrestrial resources and related public recreational services and $40 million was available for the groundwater resources. The counties where injury occurred (Butte-Silver Bow and Anaconda-Deer Lodge) developed the groundwater restoration plans, approved by the Governor, to address their groundwater priorities. The State developed the UCFRB Aquatic and Terrestrial Resources Restoration Plans, with input from the public, describing how and when the proposed restoration actions would be implemented to address priority aquatic, terrestrial, and recreational resources. Aquatic and terrestrial restoration plans were originally approved by the Governor in January 2013 and revised in 2015 and 2019, per the 2012 Final Upper Clark Fork River Basin Interim Process Plan (“Process Plan”).
Pursuant to this Process Plan, the State will be updating and revising the restoration plans in 2023. More information is available on these updates in “Current/Recent Activities”.