Addressing Los Alamos legacy contamination and waste
Learn how we safely and effectively carry out the Los Alamos National Laboratory legacy cleanup mission.
Who we are
We are responsible for carrying out the 10-year $2.1 billion LANL legacy cleanup contract for the U.S. Department of Energy Environmental Management Field Office.
N3B is committed to a safe, effective, efficient and compliant cleanup process.
Our employees are proud to call Northern New Mexico home and to continue to advance this important mission.
What’s New?
Los Alamos Legacy Cleanup Contractor Attracting Best and Brightest Talent READ MORE >
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 >
What we do
We are responsible for protecting water supplies, cleaning up contaminated soil and disposing of remaining inventories of 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 Los Alamos brightens holidays for Española’s Conjunto Preschool children
January 3, 2023 - LOS ALAMOS, N.M. – Employees at N3B Los Alamos brightened the holiday season for the children and families of Española’s...
N3B Los Alamos seeks next generation of employees for environmental cleanup at LANL
December 6, 2022 - LOS ALAMOS, N.M. – A series of recent job fairs hosted by N3B Los Alamos have resulted in 26 new...
Community meeting Nov. 9 on storm water runoff from legacy LANL sites
November 2, 2022 - LOS ALAMOS, N.M. — A hybrid community meeting on monitoring storm water runoff from sites potentially contaminated from historical operations...