State and Tribal Government Working Group (STGWG)



Five decades of nuclear weapons research and production, spanning the Manhattan Project to the Cold War, have left behind a significant environmental legacy in the United States: one of the largest environmental cleanups in the world.

The U.S. Department of Energy Office of Environmental Management (DOE-EM) has primary responsibility for this cleanup work, which initially was spread across 107 sites. To date, 91 of those sites have been cleaned up, but the remaining sites represent some of the most challenging work. While this history is of national importance, the ongoing cleanup and environmental legacy have direct impacts on the states and Native American tribes associated with these DOE sites.

To this end, the State and Tribal Government Working Group (STGWG) convenes representatives from states and Native American tribes that host or are otherwise affected by DOE sites or facilities associated with the production and cleanup of the nuclear weapons complex. Since its inception in 1989 STGWG and DOE senior leadership have convened meetings and promoted information sharing among states, tribes, and DOE offices to foster relationships and improve communications. These ongoing interactions have resulted in an improved understanding of cleanup priorities.

Cleanup is an endeavor of the present with a commitment to protect human health, cultural resources and the environment for future generations. For more than 30 years, The National Conference of State Legislatures (NCSL) has served as a nonpartisan, intergovernmental convenor for STGWG and provides a team of policy experts to support STGWG through a cooperative agreement with DOE-EM.   

Additional Resources

Long-Term Stewardship (LTS) Resources:

Natural Resource Damage Assessment Resources:

U.S. Department of Energy

NCSL Resources