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 continues groundwater sampling along Rio Grande amid drought
November 23, 2021 - LOS ALAMOS, N.M. – Despite unseasonably low water levels this year, N3B Los Alamos has been able to navigate shallow...
LANL Individual Permit for Storm Water public meeting on November 30
November 22, 2021 - LOS ALAMOS, N.M. — The Department of Energy’s Environmental Management Los Alamos Field Office (EM-LA) and cleanup contractor Newport News...
N3B supports local nonprofit during day of volunteering
November 18, 2021 - LOS ALAMOS, N.M. — Several N3B employees recently volunteered with Los Alamos nonprofit Lemonade Living to improve the organization’s grounds...