U.S. Department of Energy Office of Environmental Management Assistant Secretary Tim Walsh recently joined U.S. Reps. Chuck Fleischmann and Susie Lee for the first U.S. House Nuclear Cleanup Caucus event of the year. February 17, 2026
Thanks to their safe and successful cleanup work in 2025, the Portsmouth and Paducah sites demonstrated the strong role the U.S. Department of Energy Office of Environmental Management plays in advancing American energy dominance and innovation. December 23, 2025
In 2025, the U.S. Department of Energy Office of Environmental Management Los Alamos Field Office and its contractor achieved substantial progress in the legacy cleanup mission underway at Los Alamos National Laboratory matched by strong safety performance, federal and contractor leaders said here last week. December 23, 2025
Cleanup program recently awarded performance-based fee payments to 12 of its contractors at sites across the DOE complex. December 23, 2025
2025 Accomplishments
The U.S. Department of Energy Office of Environmental Management announced the successful completion of major optimizations across the Savannah River Site’s liquid waste treatment system.
The U.S. Department of Energy Environmental Management Nevada Program recently completed drilling of two new groundwater monitoring wells and deepened a third at the Nevada National Security Site. December 16, 2025
Workers have begun demolishing the massive X-333 Process Building, achieving a U.S. Department of Energy Office of Environmental Management priority to begin demolition of the second of the Portsmouth Site’s three former uranium process buildings. November 18 , 2025
Low-Activity Waste Facility begins solidifying tank waste in glass.
The Oak Ridge Office of Environmental Management and contractor Isotek Systems met a U.S. Department of Energy Office of Environmental Management 2025 priority to process 50 canisters of the radioactive material uranium-233 for shipment and disposal three months ahead of schedule. September 30, 2025