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
N3B celebrates opening of new occupational medicine clinic for employees
June 5, 2024 - LOS ALAMOS, N.M. – Newport News Nuclear BWXT Los Alamos (N3B) is pleased to announce the opening of a new...
Los Alamos Stormwater Sampling Season is Underway
June 4, 2024 - A Newport News Nuclear BWXT Los Alamos Environmental Remediation group member collects stormwater samples in Los Alamos Canyon. LOS ALAMOS,...
In Pictures: EM’s Avery Views Los Alamos Legacy Waste Disposition Progress
May 21, 2024 - U.S. Department of Energy Office of Environmental Management (EM) Principal Deputy Assistant Secretary Jeff Avery, left, visits Technical Area 54,...