NNSA cancels public engagement efforts for increased plutonium use at LLNL

Jude Strzemp at Livermore Vine January 7, 2026

The Department of Energy’s National Nuclear Security Administration recently retracted its intention to publish a draft environmental report for public comment about increasing the amount of fissile material for research and development at Lawrence Livermore National Laboratory.

In addition to increasing the quantity of material, the project dubbed “Enhanced Plutonium Facility Utilization at LLNL” proposes increasing materials shipments and waste generation/shipments during operations, conducting security and infrastructure construction activities and upgrading the security categorization of the LLNL Plutonium Facility operations from security category III (plutonium metal limited to 400 grams) to security category II (plutonium metal limited to 2 kg) with added operational and security personnel, according to an NNSA presentation from a public scoping meeting about the project last January.

A draft of the SEIS was set to be published for public comment, according to a notice of intent by NNSA published Jan. 13, 2025 in the National Register.

But given recent regulatory changes, NNSA no longer plans to publish the draft environmental document for public comment or host any relevant public hearings, according to NNSA’s November notice reversing its previous intention. Additionally, the NNSA does not intend to wait 30 days after issuing a final environmental impact statement to publish its record of decision.

Sans publication of the draft SEIS and corresponding public hearings, the final statement is expected for publication during early 2026 along with the agency’s record of decision, the November notice states.

Among those expressing discontent with NNSA’s decision is Tri-Valley CAREs, a Livermore-based organization that monitors activities in the U.S. involving nuclear weapons and environmental clean-up, with particular attention to LLNL.

“This decision makes it clear that the Lab, and the National Nuclear Security Administration prefers that the Livermore community and the American public not engage in decision making about nuclear weapons development programs and the impacts on the communities that house them,” Tri-Valley CARES executive director Scott Yundt told Livermore Vine.

According to the Jan. 29, 2025 presentation, NNSA needs increased “space” for plutonium research and development due to new and evolving international security concerns.

The space is critical to the Stockpile Stewardship and Management Program, a plan for sustaining and modernizing an effective nuclear weapons stockpile.

Additionally, LLNL’s plutonium facility research and development capability is underutilized, the presentation states.

However, the SEIS does not propose changes to the facility’s hazard categorization, nor its “administrative limit” as described in a 2023 LLNL site-wide report, the presentation adds.

“NNSA and LLNL are committed to safeguarding the health and welfare of their employees, neighbors and surrounding communities,” NNSA officials told Livermore Vine.

The lab also maintains practices that ensure its environmental stewardship, agency officials added.

Regulatory changes that led to the NNSA’s decision to no longer publish its draft SEIS or hold additional public hearings include an Executive Order Jan. 20, 2025 dubbed Unleashing American Energy and amendments to the National Environmental Policy Act’s implementing procedure.

According to the November notice, the regulatory update and new implementing procedures “significantly streamline NEPA processes by focusing on statutory requirements while retaining meaningful review of potential environmental impacts”.

Comments received during the public scoping period lasting from January of 2025 through March 3, 2025 have been considered and incorporated in the SEIS, NNSA officials told Livermore Vine.

The notice regarding LLNL was issued in tandem with an announcement that the NNSA will not publish a draft site-wide environmental impact statement for continued operation of Sandia National Laboratories in New Mexico.

“Without the ability to comment in writing or orally at a public hearing… there is little to no incentive for members of the public to even read the SEIS,” Yundt said of the altered public engagement.

Yundt also expressed concern about the potential dangers caused by increased transportation of plutonium to the lab, experimentation, accidents and waste removal.

“It will be used to develop a new generation of more technologically advanced nuclear weapons, contributing to an already escalating new nuclear arms race where the U.S. is a major driver and where a possible nuclear war could end human civilization as we know it,” he said.

Tri-Valley CAREs is set to hold its monthly meeting Jan. 15 regarding its response to NNSA’s announcement.

Meanwhile, NNSA initiated the second, five-year review of its environmental clean up at LLNL’s Site 300, a U.S. DOE experimental test facility for high explosives materials located in the Altamont Hills between Livermore and Tracy.

According to a Dec. 19, 2025 statement by LLNL officials, The review is set to summarize the nature and extent of contamination, the progress of cleanup and whether the remedy continues to protect human health and the environment.

The review is required by the Superfund law every five years when “contaminants at a site remain above levels that allow unrestricted access”, according to the statement.

The final review is set to be available online for a 60-day review period beginning April 13.

Editor’s note: This story was updated to reflect details provided by NNSA officials following publication.