Nez Perce Tribe



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In 2002, the Nez Perce Tribe, through its Environmental Restoration & Waste Management Program (ERWM), received a Citizen’s Monitoring and Technical Assistance grant (MTA), which set to analyze the Canyon Disposition Initiative (CDI) 221-U Facility (U Plant) decision-making process. The ERWM analysis focused on the technical data being utilized by the Tri-Party agencies (Department of Energy, State of Washington-Department of Ecology, and the Environmental Protection Agency) in making its recommendations for the CDI.

The Nez Perce Tribe has advocated for Long-Term Stewardship because the Hanford site is located within its ceded territory, defined by Treaty of 1855. Long Term Stewardship is a priority issue for the Nez Perce Tribe and will continue to provide guidance on this process as it evolves, incorporating fundamental tribal, social, and cultural protective measures. What is stewardship? Every land user of Hanford site has their competing concept and definition of stewardship. Currently, it is defined in the Hanford Long-Term Stewardship (LTS) Program Plan as "Long-term stewardship at Hanford Site is the management of residual risks (human health, ecological, and cultural) associated with any remaining residual contamination; protection of the Site's cultural, biological, and natural resources; and the reuse of the Site's assets to encourage a healthy regional economy. It begins at clean up completion."


Nez Perce Tribe




nuclear weapons, nuclear weapons testing, environment, non-governmental organizations, United States Department of Energy, tribal governments, environmental cleanup, radioactive fallout, radioactive waste


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Lapwai, ID

Hanford Tribal Stewardship



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