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
N3B ships more than 200,000 gallons of ‘transition materials’ off-site at LANL
February 2, 2021 - LOS ALAMOS, N.M. – Newport News Nuclear BWXT Los Alamos (N3B) recently took on new work to ship hundreds of...
N3B and Triad cooperate to ship radioactive waste to WIPP
January 19, 2021 - LOS ALAMOS, N.M. — N3B and Triad have successfully partnered to combine transuranic (TRU) waste shipment for additional efficiency. The...
N3B completes first campaign under 2016 Consent Order to clean up LANL legacy waste
December 16, 2020 - LOS ALAMOS, N.M. — A campaign to clean up several sites with elevated levels of soil contamination at Los Alamos...