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?
Environmental Management Cleanup Forum 3/18/2026 READ MORE >
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 >
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
Community Commitment funding supports local organizations
February 14, 2022 - LOS ALAMOS, N.M. — Newport News Nuclear BWXT Los Alamos (N3B) contributed $483,235 to Northern New Mexico community groups and...
Angled drilling of new monitoring well protects groundwater, ancient cultural sites
February 1, 2022 - LOS ALAMOS, N.M. — N3B environmental professionals recently completed a complex project to protect Northern New Mexico’s critical water resources...
N3B continues groundwater sampling along Rio Grande amid drought
November 23, 2021 - LOS ALAMOS, N.M. – Despite unseasonably low water levels this year, N3B Los Alamos has been able to navigate shallow...