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 12/17/2025 READ MORE >
Los Alamos Provides Legacy Waste Program Updates at Public Forum READ MORE >
Los Alamos Tour Informs Senate Committee Staff About Legacy Cleanup READ MORE >
Los Alamos Completes 200th Transuranic Waste Shipment to WIPP 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’s water quality program ramps up amid exceptional drought
August 17, 2021 - LOS ALAMOS, N.M. — With hopes for rain amid exceptional drought conditions, the EM Los Alamos Field Office (EM-LA) and...
N3B donates $10,000 to local nonprofit, supports residents in need
August 16, 2021 - N3B Staff presented a check last week to LA Cares, a local non-profit that provides assistance to residents in need...
Apprenticeship program in environmental cleanup offering associate’s degree
June 24, 2021 - LOS ALAMOS, N.M. — An N3B apprenticeship program that trains students in the U.S. Department of Energy’s (DOE’s) Environmental Management...