Supplemental Environmental Impact Statement

Enhanced Plutonium Facility Utilization

The U.S. Department of Energy’s National Nuclear Security Administration 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.

Get additional information about the SEIS.