N3B manages the Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy.
N3B manages the 10-year, $1.7 billion Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy Environmental Management’s Los Alamos Field Office. N3B is responsible for cleaning up contamination that resulted from LANL operations before 1999. N3B personnel also package and ship radioactive and hazardous waste off-site for permanent disposal.
Safety
Our employees and subcontractors work to the highest standards of safety.
Discipline
We set clear goals and execute our plans with the end in mind.
Competence
We have the staff and expertise to ensure our mission is met.
DOE Environmental Management Los Alamos Strategic Vision Development

In 2022, the Department of Energy (DOE) Environmental Management Los Alamos (EM-LA) initiated the development of a long-term strategic vision for future LANL Legacy Cleanup Campaigns. The goals of the EM-LA strategic vision are to enhance stakeholder engagement in cleanup decisions, and to align with the objectives of the Los Alamos Legacy Cleanup Contract, regulatory interfaces, anticipated cleanup funding and desired outcomes. The EM-LA strategic vision will be integrated with DOE’s broader goals for the legacy cleanup completion.
Our Top Priorities
In cleaning up legacy waste, or waste generated before 1999, we are working in two key areas: Environmental Remediation and Waste Management. Our goal is to clean up the environment and protect our natural resources.
Environmental Remediation
Groundwater and surface water monitoring, chromium and RDX plume monitoring, and waste site characterization and remediation
Waste Management
Hazardous and radioactive waste characterization, management, packaging and transportation off-site for permanent disposal
News & Highlights
Local students earn associate degrees through N3B Los Alamos apprenticeship program - August 18, 2022
LOS ALAMOS, N.M. – Local students Miquela Casados and Zac Martinez recently received associate degrees after graduating from N3B Los... Read More ›
More than $12,700 raised by N3B Los Alamos to support local food bank - July 15, 2022
LOS ALAMOS, N.M. – Team members of N3B Los Alamos were pleased to present a check for $12,740 to local... Read More ›
N3B Los Alamos achieves key milestones in campaign to determine closure for historically contaminated sites - July 12, 2022
LOS ALAMOS, N.M. — N3B Los Alamos recently met key milestones in a cleanup campaign to reevaluate whether certain sites... Read More ›