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
N3B’s support of Northern New Mexico communities outlined in 2022 annual report - February 6, 2023
LOS ALAMOS, N.M. – N3B Los Alamos contributed nearly $370,000 to community nonprofits and workforce development initiatives in Northern New... Read More ›
2022 highlights of N3B Los Alamos’ legacy environmental cleanup at LANL - January 12, 2023
LOS ALAMOS, N.M. — In its fourth year addressing environmental impacts from Los Alamos National Laboratory’s (LANL) Manhattan Project and... Read More ›
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... Read More ›