A New Mexico watchdog group says recent federal analyses point to growing pressure to expand plutonium pit production at Los Alamos National Laboratory (LANL), potentially beyond currently scoped capacity.
The group refers to the lab’s most recently released record of decision and site-wide environmental impact statement (SWEIS), an analysis required by the National Environmental Policy Act (NEPA) to review the environmental effects of continued operations at the lab and draw public comment. The determination from the SWEIS was to expand operations “beyond those that currently exist” and build new facilities “to respond to future national security challenges.”
In a March 26 statement, the Los Alamos Study Group (LASG) said planning tied to the National Nuclear Security Administration’s (NNSA) 80-pit-per-year requirement is driving the need for increased throughput at LANL, the only site currently producing pits, or the fissile core of the warheads tipping the nation’s nuclear weapons. While NNSA’s long-term strategy calls for a two-site solution—including the Savannah River Plutonium Processing Facility (SRPPF)—persistent cost and schedule risks at the South Carolina site continue to keep the near-term emphasis on Los Alamos.
LASG said the latest signals suggest production demands tied to major warhead programs could push LANL toward expanded plutonium operations and potentially new or upgraded facilities. The group characterized the trajectory as an increase in mission scale.
“Administration officials have told us that the overarching nuclear weapons policy in this administration is to “go fast,” and that is what they are doing,” LASG Director Greg Mello said in the release.
Mello also said the SWEIS does not even mention LANL’s actual pit mission, a move he called “just the tip” of a “much larger anti-environmental iceberg,” claiming the SWEIS did not actually review a mandated higher production rate of plutonium pits, or those environmental impacts.
“This EIS comes over five years after the actual decision to build a plutonium bomb factory at Los Alamos was made, in 2020,” Mello said. “No factual EIS at all preceded that decision, as we said at the time. Since then, dozens of projects have been quietly approved and implemented without any environmental analysis. This week’s analysis follows, rather than precedes, the main decisions it supposedly was to advise.”
The group also raised concerns about safety and environmental oversight, arguing that accelerated timelines could strain regulatory processes under NEPA. The Los Alamos Study Group has long called for a programmatic review of cumulative impacts associated with pit production and broader stockpile modernization.
NNSA officials have consistently maintained that expanded pit production is required to meet military requirements, support life extension programs, and ensure long-term stockpile reliability. Agency plans have emphasized risk reduction through a distributed production strategy, though execution challenges—particularly at SRPPF—remain.
“Now that NNSA has this document, we can liken it to a big deck of environmental ‘get out of jail free’ cards, which NNSA can now play whenever they need to,” Mello said. “There’s no sincere attempt to protect the environment involved. The Expanded Operations Alternative will actually destroy much of LANL’s environment, and place increasing stress on the environment of the whole region. It’s there in black and white for those who care to read it.”
NNSA declined to comment on LASG’s press release.