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President Obama designated David G. Huizenga as the Acting Assistant Secretary for the Office of Environmental Management, effective July 20, 2011.

Tracy Mustin has been the Principal Deputy Assistant Secretary for Environmental Management since August 2011. In this capacity, she is responsible for the policy direction, management, and execution of the Department of Energy’s nuclear cleanup portfolio.

Alice is currently the Associate Principal Deputy Assistant Secretary for the U.S. Department of Energy (DOE) Office of Environmental Management (EM). She is responsible for providing oversight of the EM Mission Units and ensuring integration across the mission areas at both DOE Headquarters and the field.

Mr. Matthew Moury is the Deputy Assistant Secretary for Safety, Security, and Quality Programs within the Office of Environmental Management (EM). The mission of the office is to manage EM-wide Integrated Safety Management and Integrated Safeguards and Security Management implementation oversight activities. The office provides standards assurance for major project planning, executes operational safety and awareness programs, and oversees quality assurance programs. The office is also responsible for tracking Defense Nuclear Facilities Safety Board (DNFSB) recommendations and issues.

Mr. Mark Gilbertson is currently the Deputy Assistant Secretary (DAS) for Site Restoration within the Office of Environmental Management (EM).

Terry Tyborowski is currently the Environmental Management Program’s Deputy Assistant Secretary for Program Planning and Budget. Prior to this assignment, Terry was the senior advisor to EM’s Principal Deputy (EM-2) for two years, focusing on Savannah River nuclear operations, and developing a systems dynamic model for managing surplus fissile material. At the request of EM-2, Terry led a Task Force of senior technical staff in evaluating EM Headquarters management information systems that support the $6 billion EM budget and project management activities.

Ms. Melody Bell, is currently the acting Deputy Assistant Secretary for Human Capital and Corporate Services in the Office of Environmental Management.  Previously she served as the Senior Advisor to the Associate Deputy Secretary (ADS) at the U.S. Department of Energy (DOE).  Secretary Chu established the Office of the ADS to drive improvements in mission execution and assure that they are efficiently and effectively implemented throughout the Department of Energy. Ms.

Mr. J. E. “Jack” Surash is currently the Deputy Assistant Secretary (DAS) for Acquisition and Project Management. He is responsible for developing and implementing site and project specific acquisition and contract strategies, and for overseeing placement and execution of all Office of Environmental Management (EM) contracts in the Field.

President Obama appointed Paul Seidler on May 7, 2012 to the Senior Executive Service as the Director of External Affairs for Environmental Management (EM). In this role, Mr. Seidler creates and manages public engagement programs for the world’s largest environmental remediation program. He is also a key advisor on policy development for Environment Management. Paul was born and raised in Chicago.

Kenneth Picha is currently the Acting Deputy Assistant Secretary for Tank Waste and Nuclear Materials Management in the Office of Environmental Management (EM). 

Frank Marcinowski has more than 23 years experience ensuring the safe use, management and oversight of radioactive and nuclear materials. He has extensive expertise in environmental policy development and governmental affairs on a national, regional and local level. He joined the Department of Energy (DOE) in 2004 and currently serves as the Deputy Assistant Secretary for Waste Management for the Department’s Environmental Management (EM) Program.