Who we are

Working safely to clean up the the land, protect water quality and ship waste off-site

Contractor for the U.S. Department of Energy

We manage the 10-year, $2.1 billion Los Alamos Legacy Cleanup Contract for the U.S. Department of Energy Environmental Management Los Alamos Field Office.

Our Leadership

A group of talented, qualified individuals lead our efforts to clean up legacy waste and protect water quality at LANL.


N3B is a limited liability company owned by HII Nuclear, a division of Huntington Ingalls Industries, and BWX Technologies. Critical subcontractors are Tech2 Solutions and Longenecker & Associates. 

Working with the U.S. Department of Energy Environmental Management Los Alamos Field Office to clean up legacy waste and protect water quality

N3B’s responsibility is to cleanup legacy waste and protect water quality at Los Alamos National Laboratory, as well as ship waste off-site for permanent disposal. Legacy waste is defined as waste that was generated before 1999.

N3B Parent Companies

HII supports national security missions around the globe with unmanned systems, nuclear and environmental services, defense and federal solutions, and is America’s largest military shipbuilding company. We are proud partners supporting the Department of Energy missions through site management and operations and all phases of environmental remediation. Headquartered in Newport News, Virginia, HII employs more than 42,000 people operating both domestically and internationally. For more information, visit: hii.com.

At BWX Technologies, Inc. (NYSE: BWXT), we are People Strong, Innovation Driven. Headquartered in Lynchburg, Va., BWXT provides safe and effective nuclear solutions for national security, clean energy, environmental remediation, nuclear medicine and space exploration. With approximately 6,650 employees, BWXT has 12 major operating sites in the U.S. and Canada. In addition, BWXT joint ventures provide management and operations at more than a dozen U.S. Department of Energy and NASA facilities.  Follow us on Twitter at @BWXTech and learn more at www.bwxt.com.

N3B Critical Subcontractors

Longenecker & Associates Inc. (L&A), a woman-owned small business, brings more than 25 years’ experience in working across the U.S. Department of Energy complex to strengthen quality and improve mission performance. With about 230 internationally recognized experts, L&A supports the government or its contractors at all major DOE sites, including Hanford, Savannah River, Idaho, Oak Ridge, Sandia, Los Alamos, WIPP, Pantex, Nevada, Portsmouth and Paducah, as well as similar sites in the United Kingdom and Canada. As a values-based company, L&A’s core values are a critical part of how its business is conducted, and it brings proven governance approaches to optimize mission delivery.

Tech2 Solutions is a joint venture formed by partners Sealaska Technical Services LLC and Tetra Tech Inc. Through our parent companies, we provide more than 50 years of experience in water and waste water engineering and remediation. Sealaska is an Alaska Native Corporation with broad water and soil remediation experience. Tetra Tech is a leading provider of consulting and engineering services supporting commercial and government clients focused on water, environment and resource management. With 21,000 staff worldwide, Tech2 Solutions provides clear solutions to complex problems.

N3B Leadership Team

Scott Blackford

Scott Blackford

Information Technology Program Manager and Chief Information Officer (Acting)

Jim Denham

Jim Denham

Program Management Office, Program Manager (Acting)