Managing Los Alamos legacy waste
Learn how we execute the Los Alamos Legacy Cleanup Contract safely and securely.
Who we are
We manage the 10-year, $2.1 billion Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy Environmental Management Los Alamos Field Office.
What’s New?
N3B Releases 2025 Community Commitment Annual Report READ MORE >
Updates on Hexavalent Chromium Campaign READ MORE >
Environmental Management Cleanup Forum 12/17/2025 READ MORE >
Los Alamos Provides Legacy Waste Program Updates at Public Forum READ MORE >
Los Alamos Tour Informs Senate Committee Staff About Legacy Cleanup READ MORE >
Los Alamos Completes 200th Transuranic Waste Shipment to WIPP READ MORE >
What we do
We clean up, package and ship radioactive and hazardous Los Alamos National Laboratory legacy waste
Land
Water
Waste
Work with us
We’re a diverse team of problem-solvers and innovators, united by our commitment to N3B’s vital mission of legacy waste cleanup and community enhancement.
Latest News
Los Alamos Completes FY24 Legacy Cleanup Milestones, Meets Regulatory Commitments
October 24, 2024 - The last shipment of soil and debris from the completed cleanup at the Middle DP Road Site leaves for an...
EM “Drills” Down on Legacy Waste at Los Alamos
September 19, 2024 - Newport News Nuclear BWXT Los Alamos waste processing operators repackage materials from a legacy waste container to a new lined...
N3B Bids Farewell to Three Summer Interns Who Made Significant Contributions
August 29, 2024 - LOS ALAMOS, N.M. – Newport News Nuclear BWXT Los Alamos (N3B), the legacy cleanup contractor at the Los Alamos National...