No: IV-13-024 August 9, 2013

CONTACT: Victor Dricks (817) 200-1128

Lara Uselding (817) 100-1519

NRC Names Marc L. Dapas as Region IV Administrator

Marc L. Dapas, a 24-year veteran of the Nuclear Regulatory 

Commission, has been named the new Administrator of the NRC’s Region 

IV office in Arlington, Texas. He succeeds Arthur T. Howell, who

announced his retirement after a long and distinguished career.

“Marc Dapas has repeatedly demonstrated an exemplary 

commitment to technical and managerial excellence in a wide variety of 

assignments in our regional offices as well as at our Headquarters,” said 

Bill Borchardt, the NRC’s Executive Director for Operations. “The 

experience he has gained will serve the agency well.”

Dapas will assume his new position within the next few months. In 

the interim, Steven A. Reynolds, who has been selected as Deputy 

Regional Administrator for Region IV, will serve as Acting Regional 

Administrator. Reynolds currently serves as Director, Division of Reactor Projects, in the NRC’s 

Region III office in Lisle, Ill.

Dapas began his NRC career in 1989 as an Operations Specialist in the agency’s headquarters 

office, and three years later he was selected to be the Senior Resident Inspector at the Prairie Island 

reactor facility in Red Wing, Minn., where he was responsible for the site-specific inspection program 

to assure safe plant operation. In 1995, he was promoted to the position of Senior Reactor Analyst in 

the NRC’s Region III office, one of 10 agency-wide positions established as part of the NRC’s overall 

strategy to more fully risk-inform its regulatory process.

In 1996, Dapas was promoted to branch chief in the NRC’s Region III office, where he 

supervised the regulatory oversight of two reactor facilities on the NRC’s “problem plant list” against a 

backdrop of intense public scrutiny and congressional interest. Two years later, Dapas was promoted to 

a Senior Executive Service position in the NRC’s Region III office, where he led a program to assure 

safe operation of 18 reactor facilities in the Midwestern United States. In 2002, Dapas was assigned to 

lead the materials program in Region III, involving the licensing, inspection, and event response 

activities for 1,200 nuclear materials users, and the coordination of policy and program activities with 

local, state, and federal government organizations. 

In 2005, Dapas was named the Deputy Regional Administrator in the NRC’s Region I office in 

King of Prussia, Pa., where he provided critical leadership in support of that office’s oversight of the 

inspection, enforcement, investigation, licensing, and emergency response programs for nuclear 
Page | 2

reactors and materials licensees in the Northeast. He returned to NRC headquarters in 2011 as the 

deputy director for the Office of Nuclear Security and Incident Response, a major program office that 

provides oversight of agency security policy for nuclear facilities and for users of radioactive material, 

provides security interface with other federal agencies, and maintains the agency emergency 

preparedness and incident response programs.

Dapas received a bachelor’s degree in mechanical engineering from the U.S. Naval Academy 

and served on active duty in the U.S. Navy’s nuclear power submarine program. After leaving active

duty to join the NRC, Dapas continued his military service as a member of the Navy Reserve, retiring 

last June after 30 years of service.