October 20, 2015 

The Honorable Shelley Moore Capito 

Chairman, Subcommittee on Clean Air 

 and Nuclear Safety 

Committee on Environment 

 and Public Works 

United States Senate 

Washington, DC 20510 

Dear Madam Chairwoman: 

 The Atomic Energy Act of 1954 (AEA) requires the U.S. Nuclear Regulatory Commission 

(NRC) to periodically send reports to Congress discussing the health, safety, and environmental 

conditions at the gaseous diffusion uranium enrichment plants (GDPs) located near Paducah, 

Kentucky, and Portsmouth, Ohio. The previous such report covered the period from October 1, 

2008, to September 30, 2013, and was sent to the congressional oversight committees on 

January 13, 2014. Enclosed is the most current report covering the period October 1, 2013, to 

February 2, 2015. 

 As detailed in the enclosed report, the United States Enrichment Corporation notified the 

NRC in June 2013 that it was terminating its uranium enrichment activities at the Paducah GDP. 

The enrichment activities there permanently ceased on July 25, 2013. The NRC terminated the 

Certificate of Compliance for the Paducah GDP on February 2, 2015. The Certificate of 

Compliance for Portsmouth’s GDP was terminated by the NRC on October 12, 2011. Federal 

regulation of activities at the Paducah and Portsmouth sites is now provided by the U.S. 

Department of Energy (DOE). 

 The enclosed report will be the final NRC report regarding the GDPs. As required by the 

AEA, the preparation of this report has been coordinated with the DOE and the U.S. 

Environmental Protection Agency. 

Sincerely, 

/RA/ 

 Stephen G. Burns 

Enclosure: 

Report to Congress 

cc: Senator Thomas R. Carper
Identical letter sent to: 

The Honorable Shelley Moore Capito 

Chairman, Subcommittee on Clean Air 

 and Nuclear Safety 

Committee on Environment and Public 

Works 

United States Senate 

Washington, DC 20510 

cc: Senator Thomas R. Carper 

The Honorable James M. Inhofe 

Chairman, Committee on Environment 

 and Public Works 

United States Senate 

Washington, DC 20510 

cc: Senator Barbara Boxer 

The Honorable Fred Upton 

Chairman, Committee on Energy and 

Commerce 

United States House of Representatives 

Washington, DC 20515 

cc: Representative Frank Pallone, Jr. 

The Honorable Ed Whitfield 

Chairman, Subcommittee on Energy 

 and Power 

Committee on Energy and Commerce 

United States House of Representatives 

Washington, DC 20515 

cc: Representative Bobby L. Rush 

The Honorable John Shimkus 

Chairman, Subcommittee on Environment 

 and the Economy 

Committee on Energy and Commerce 

United States House of Representatives 

Washington, DC 20515 

cc: Representative Paul Tonko 

The Honorable Harold Rogers 

Chairman, Committee on Appropriations 

United States House of Representatives 

Washington, DC 20515 

cc: Representative Nita Lowey 

The Honorable Mike Simpson 

Chairman, Subcommittee on Energy 

 and Water Development 

Committee on Appropriations 

United States House of Representatives 

Washington, DC 20515 

cc: Representative Marcy Kaptur 

The Honorable Lamar Alexander 

Chairman, Subcommittee on Energy 

 and Water Development 

Committee on Appropriations 

United States Senate 

Washington, DC 20510 

cc: Senator Dianne Feinstein