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
N3B completes first year of legacy waste cleanup at LANL
May 1, 2019 - LOS ALAMOS, N.M.—This week, Newport News Nuclear BWXT Los Alamos (N3B) celebrates its first anniversary as a new company cleaning...
Workers complete PCB cleanup completed at Los Alamos Canyon site
March 27, 2019 - LOS ALAMOS, N.M. – N3B has have finished cleaning up PCB-contaminated soil near the former Omega research reactor site at Los...
N3B awards second cleanup subcontract at TA-21 to LATA
March 21, 2019 - LOS ALAMOS, N.M. — Building 257 is a former radioactive liquid waste processing facility that will be torn down as...