Senior Advisor, Office of Environmental Management
William "Ike" White
William "Ike" White has led the Department of Energy’s Office of Environmental Management (EM) since June 2019. He provides leadership for the safe cleanup of the environmental legacy brought about from five decades of nuclear weapons development and government-sponsored nuclear energy research.
Principal Deputy Assistant Secretary, Office of Environmental Management
Jeffrey Avery
Jeffrey Avery serves as the Principal Deputy Assistant Secretary (PDAS) in the Office of Environmental Management (EM). In this role Avery works to enable the safe and successful execution of the EM mission, while providing management oversight of activities, operations, and program integration across Department of Energy (DOE) field sites.
Associate Principal Deputy Assistant Secretary for Field Operations
Gregory Sosson
Gregory Sosson is the Associate Principal Deputy Assistant Secretary for Field Operations for the Office of Environmental Management (EM). He is responsible for developing strategies, policy, and guidance for the 15 EM field sites in support of the EM mission. He oversees nuclear operations, safeguards and security, and technology development. He also oversees EM’s efforts under the Justice40 Initiative.
Associate Principal Deputy Assistant Secretary for the Office of Regulatory and Policy Affairs
Kristen Ellis
Kristen serves as the Associate Principal Deputy Assistant Secretary for the Office of Regulatory and Policy Affairs, and as the Director of Regulatory, Intergovernmental, and Stakeholder Engagement, within the US Department of Energy’s Environmental Management (EM) Office. Her portfolio includes regulatory compliance, intergovernmental, international, and stakeholder engagement.
Associate Principal Deputy Assistant Secretary for Corporate Services, Office of Environmental Management
Dae Chung
Dae Chung serves as the Associate Principal Deputy Assistant Secretary for Corporate Services for the Office of Environmental Management (EM) at the U.S. Department of Energy (DOE). He is responsible for leading and overseeing the strategic corporate operations and essential business services necessary to support and enable the over $7 billion EM cleanup program including resource management, acquisition and project management and internal and external communications.
Click here for listing of the EM Field Managers
Click here for listing of EM Past Assistant Secretaries