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 Los Alamos awards scholarships to three local students: Alyssa Aguilar, Daniel Tafoya and Jimmy Wheeler
March 4, 2022 - Alyssa Aguilar, a student at Northern New Mexico College, along with Daniel Tafoya and Jimmy Wheeler, both students at University...
N3B and EM-LA host DOE EM senior advisor for tour of environmental cleanup progress
February 15, 2022 - LOS ALAMOS, N.M. — William “Ike” White, senior advisor for the Department of Energy’s Office of Environmental Management (EM), visited...
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...