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 diverts nearly five tons of plastic from landfill through recycling initiative
May 12, 2021 - LOS ALAMOS, N.M. — As part of a new recycling initiative, Newport News Nuclear BWXT Los Alamos (N3B) diverted nearly...
Los Alamos Interim Measure to Control Contaminant Plume Reaches Full Operation
May 4, 2021 - LOS ALAMOS, N.M. — An interim measure to control migration of a groundwater plume containing hexavalent chromium beneath Los Alamos...
Project impacts to DP Road starting April 12
April 9, 2021 - LOS ALAMOS, N.M. — On April 12, DOE’s Environmental Management Los Alamos Field Office and its contractor, N3B Los Alamos, will...