Addressing Los Alamos legacy contamination and waste
Learn how we safely and effectively carry out the Los Alamos National Laboratory legacy cleanup mission.
Who we are
We are responsible for carrying out the 10-year $2.1 billion LANL legacy cleanup contract for the U.S. Department of Energy Environmental Management Field Office.
N3B is committed to a safe, effective, efficient and compliant cleanup process.
Our employees are proud to call Northern New Mexico home and to continue to advance this important mission.
What’s New?
Los Alamos Legacy Cleanup Contractor Attracting Best and Brightest Talent READ MORE >
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 >
What we do
We are responsible for protecting water supplies, cleaning up contaminated soil and disposing of remaining inventories of 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
EM, Industry Fostering STEM Careers in Northern New Mexico
July 23, 2024 - On Panel 2, “Future of Tech and Opportunities in Northern New Mexico,” U.S. Department of Energy Office of Environmental Management...
In Photos: Advisory Board Partakes in Los Alamos Legacy Waste Site Tour
July 2, 2024 - Members of the Northern New Mexico Citizens’ Advisory Board along with Environmental Management Los Alamos Field Office and Newport 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...