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 makes waste cleanup progress at LANL in fiscal year 2023
October 31, 2023 - LOS ALAMOS, N.M. – Newport News Nuclear BWXT Los Alamos (N3B) successfully completed several key legacy waste cleanup accomplishments at Los...
EM-LA, N3B to discuss FY23 cleanup progress at Cleanup Forum on Nov. 1
October 24, 2023 - EM-LA and N3B will hold an Environmental Management Cleanup Forum on Nov. 1 to discuss recent legacy waste cleanup progress...
N3B to hold two meetings outlining funding opportunities for NNM nonprofits
October 19, 2023 - N3B will be holding two public meetings to share its Community Commitment Program with area nonprofit organizations, along with information...