The EPA published a Notice of Availability for NNSA's Supplemental Environmental Impact Statement for Enhanced Plutonium Facility Utilization at Lawrence Livermore National Laboratory (DOE/EIS-0547-S1).
Office of NEPA Policy and Compliance
May 22, 2026
Estimated Read Time min
Supplemental EIS for Enhanced Plutonium Facility Utilization; Alameda County, California
The Environmental Protection Agency (EPA) announced the availability of the National Nuclear Security Administration's (NNSA) Supplemental Environmental Impact Statement (SEIS) for Enhanced Plutonium Facility Utilization at Lawrence Livermore National Laboratory (LLNL) in Livermore, California (DOE/EIS-0547-S1), tiered from the 2023 LLNL Site-Wide Environmental Impact Statement (DOE/EIS-0547). This project would increase the amount of fissile materials for research and development (R&D) operations at the Plutonium Facility, which would require increasing the facility Security Category (CAT) from Security CAT III operations to Security CAT II.
For more information, see Supplemental EIS for Enhanced Plutonium Facility Utilization.