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
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...
Los Alamos Completes 200th Transuranic Waste Shipment to WIPP
August 19, 2025 - The 200th transuranic shipment from Technical Area 54, Area G, at Los Alamos National Laboratory heads to the Waste Isolation...
N3B Commences Shipment of Corrugated Metal Pipe Waste Stream from LANL to WIPP
June 11, 2025 - N3B has begun off-site shipments of transuranic (TRU) waste from previously buried corrugated metal pipes (CMPs) for permanent disposal. This...