We are the Los Alamos Legacy Cleanup Contractor
Clean Up The Environment - Protect Our Future
We are committed to our community
Clean Up The Environment - Protect Our Future
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N3B manages the Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy.

N3B manages the 10-year, $1.4 billion Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy’s Environmental Management 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 offsite for permanent disposal.



Our employees and subcontractors work to the highest standards of safety.  



We set clear goals and execute our plans with the end in mind.  



We have the staff and expertise to ensure our mission is met. 

Our Top Priorities

In cleaning up legacy 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

Ground and surface water monitoring, chromium and RDX plume monitoring, and waste site characterization and remediation 

WasTe Managment

Hazardous and radioactive waste characterization, management, packaging and transportation offsite for permanent disposal

News & Highlights

N3B completes first year of legacy waste cleanup at LANL - January 28, 2020

N3B completes first year of legacy waste cleanup at LANL LOS ALAMOS, N.M.—This week, Newport News Nuclear BWXT Los Alamos... Read More ›

N3B boot camp program serves as economic driver, prepares local workforce to clean up waste sites at LANL - December 9, 2019

LOS ALAMOS, N.M.–Eight area students from Española, Chimayó, Nambé, Los Alamos and Abiquiú recently completed a program that prepares them... Read More ›

N3B boot camp graduate aims to clean up Northern New Mexico’s environment - December 9, 2019

LOS ALAMOS, N.M.–David Abrams spends nearly all his spare time in New Mexico’s wilderness — hiking on Cerro Perdernal where... Read More ›

Social Media Feed

N3B Los Alamos
N3B Los Alamos16 hours ago

Check out the Los Alamos Reporter's coverage of the good work our storm water group's doing! #cleanup #newmexico

N3B Los Alamos
N3B Los Alamos5 days ago

N3B began construction over the weekend of berms that will control storm water in and around #LosAlamos National Laboratory. The berms are located in areas where the historical disposal of solid waste is known or suspected, and that have the potential to be...

N3B Los Alamos
N3B Los Alamos1 week ago

N3B transitioned to Phase Two of our Resumption of Operations plan this week and we’re excited to ramp up #environmental remediation field operations! Operations include additional soil sampling to further ensure former #LosAlamos National Laboratory sites where the historical disposal of...

N3B Los Alamos
N3B Los Alamos3 weeks ago

This crew’s now fully qualified to assist in our mission of safely moving radiological waste offsite. After completing the Radiological Control Technicians Bootcamp last winter — a joint initiative between N3B and University of New Mexico–Los Alamos — these guys passed their oral boards last...

N3B Los Alamos
N3B Los Alamos4 weeks ago

Our crews are following COVID-safe practices while monitoring #groundwater in areas affected or potentially affected by historic operations at LANL. Field crews collect samples at wells which are then analyzed for specific constituents. In addition to monitoring water quality, our team collects data...


1200 Trinity Drive
Suite 150
Los Alamos, NM 87544


(505) 257-7690



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