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 honors Earth Day with ongoing eco-scoping at LANL
April 20, 2022 - LOS ALAMOS, N.M. — With its steep canyons and watersheds emptying into the Rio Grande, a swath of ancient pueblo...
N3B employment boot camps thrive in Los Alamos to support environmental cleanup
April 18, 2022 - LOS ALAMOS, N.M. – A total of 22 students in the Radiological Control Technician (RCT) boot camp doubles last year’s...
N3B Los Alamos awards scholarships to three local students: Alyssa Aguilar, Daniel Tafoya and Jimmy Wheeler
March 4, 2022 - Alyssa Aguilar, a student at Northern New Mexico College, along with Daniel Tafoya and Jimmy Wheeler, both students at University...