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NRC-Regulated Complex Materials Sites Undergoing Decommissioning

Of the 38 complex materials sites that are currently undergoing decommissioning in the United States, the U.S. Nuclear Regulatory Commission (NRC) currently regulates 12 sites, located in 8 States, overseen by the agency's 4 regional offices, as illustrated by the following map. The table below the map identifies these sites and provides links to their descriptions, which include site status summaries, any major technical or regulatory issues, and the estimated date for closure of each site. For a quick summary in open format (Microsoft Excel), see Status of NRC-Regulated Complex Materials Sites Undergoing Decommissioning, as well as the related Data Dictionary (both in Microsoft Excel format).

Complex Materials

Complex Materials

Fuel Cycle Facilities

Fuel Cycle Facilities

Name

Location

Region

Alameda Naval Air Station

CA

Region IV

Lead Cascade (Centrus)

OH

Region III

Cimarron (Kerr-McGee)

OK

Region IV

FMRI, Inc. (Fansteel)

OK

Region IV

Hunter's Point Naval Shipyard

CA

Region IV*

Jefferson Proving Ground

IN

Region III

McClellan Air Force Base

CA

Region IV*

Picatinny Arsenal

NJ

Region I

Shallow Land Disposal Area (BWX Technologies, Inc.)

PA

Region I

Sigma-Aldrich

MO

Region IV**

UNC Naval Products

CT

Region I

West Valley Demonstration Project

NY

Region I

* Non-NRC regulated decommissioning site. The NRC staff is staying informed of the remediation at this site.
** Region III oversees all materials licensees in Missouri (MO).

Note: Region I oversees all materials licensees in Region II.

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Page Last Reviewed/Updated Monday, August 25, 2025

Page Last Reviewed/Updated Monday, August 25, 2025