Mark Gilbertson has replaced Frank Marcinowski as the top policy and regulatory affairs official in the Department of Energy’s Office of Environmental Management (EM), according to an official agency correspondence reviewed by Weapons Complex Morning Briefing.
A DOE spokesperson in Washington confirmed Wednesday that Gilbertson is EM’s current acting associate principal deputy assistant secretary for regulatory and policy affairs. The spokesperson did not comment on Marcinowski’s status, citing DOE policy against discussing personnel matters.
Gilbertson was most recently national laboratory policy officer for EM, according to his LinkedIn profile.
Then-acting Assistant Secretary for Environmental Management Susan Cange made an internal announcement about Marcinowski and Gilbertson in a May 5 dear-colleagues letter.
“Frank Marcinowski is out of the office,” Cange wrote. “At this time, it is uncertain when he will return.”
Marcinowski, a veteran cleanup official who had spent about 13 years at DOE in different roles, had been the permanent regulatory and policy chief since 2016, when DOE reorganized the EM office to create the position. He came to DOE in 2004 from the U.S. Environmental Protection Agency.
Marcinowski is one of several DOE officials to leave senior EM positions in recent months.
Cange herself was replaced last month as acting head at the Environmental Management office by longtime DOE hand James Owendoff. She reportedly remains employed by the department and is currently a visiting scholar at her alma mater, Vanderbilt University in Nashville.
Monica Regalbuto, the former assistant secretary for environmental management who became a senior technical adviser to the office after President Donald Trump’s inauguration, has also left EM to work for Idaho National Laboratory prime contractor Battelle Energy Alliance as the integrated fuel cycle program manager.
