Supplemental Environmental Impact Statement
Enhanced Plutonium Facility Utilization
The Department of Energy’s National Nuclear Security Administration (NNSA) published a Notice of Intent in the Federal Register on January 13, 2025, to prepare a Supplemental Environmental Impact Statement (SEIS) that will evaluate enhanced plutonium facility utilization at Lawrence Livermore National Laboratory’s Plutonium Facility. The SEIS will include an analysis of potential environmental impacts of a security upgrade from Category III to Category II and changes to programmatic operations in the facility.
Additional information about the SEIS and the ongoing formal public comment process are available on NNSA’s NEPA Reading Room website under Open For Public Comment.
