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
Robust sampling, monitoring drives legacy waste cleanup at LANL
February 27, 2024 - LOS ALAMOS, N.M. — Newport News Nuclear BWXT Los Alamos (N3B) crews collected more than 8,670 soil, sediment, surface water...
LANL Individual Permit virtual public meeting scheduled for February 28
February 26, 2024 - EM-LA and N3B will host an annual meeting to report on the status of the LANL Individual Permit. The virtual...
N3B surpasses small business goals amid record procurements
January 16, 2024 - LOS ALAMOS, N.M.— Newport News Nuclear BWXT Los Alamos (N3B), the legacy waste cleanup contractor at Los Alamos National Laboratory,...