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 Releases 2025 Community Commitment Annual Report
March 5, 2026 -
N3B Recognized by DOE for Occurrence Reporting
February 25, 2026 - DOE Office of Worker Protection and Nuclear Safety applauds EM-Los Alamos contractor for invaluable dedication to fostering culture of transparency,...
Los Alamos Tour Informs Senate Committee Staff About Legacy Cleanup
September 9, 2025 - Staff from the U.S. Senate Energy and Natural Resources Committee and New Mexico staffers with Sen. Martin Heinrich’s office toured...