Morning Briefing - June 25, 2025
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June 24, 2025

Latest EM org chart shows Trischman as acting boss of corporate services

By ExchangeMonitor

The Department of Energy’s $8-billion nuclear cleanup office posted a new organizational chart earlier this month, reflecting that longtime fed Steve Trischman is now heading the office of corporate services.

With the May 30 retirement of 32-year federal supervisor Dae Chung, Trischman  is now officially the acting associate principal deputy assistant secretary for the DOE Office of Environmental Management (EM).

The Office of Environmental Management continues without a Senate-confirmed assistant secretary or EM-1 until whatever point the upper chamber acts upon the March nomination of Colorado real estate developer Tim Walsh.

Roger Jarrell, a senior DOE adviser for EM during the first Donald Trump administration, returned to the department after Jan. 20 and is currently running day-to-day operations as principal deputy assistant secretary or EM-2. Prior to Trump starting his second term, Jarrell was at a DOE contractor, United Cleanup Oak Ridge.

According to the June 9 org chart, other top line managers directly below Jarrell include Greg Sosson who heads field operations as EM-3; Kristen Ellis who oversees regulatory and policy affairs as EM-4 and Trischman as EM-5.

Joceline Nahigian is the acting director of communications and stakeholder engagement. 

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NEW: Via public records request, I’ve been able to confirm reporting today that a warrant has been issued for DOE deputy asst. secretary of spent fuel and waste disposition Sam Brinton for another luggage theft, this time at Las Vegas’s Harry Reid airport. (cc: @EMPublications)

DOE spent fuel lead Brinton accused of second luggage theft.



by @BenjaminSWeiss, confirming today's reports with warrant from Las Vegas Metro PD.

Waste has been Emplaced! 🚮

We have finally begun emplacing defense-related transuranic (TRU) waste in Panel 8 of #WIPP.

Read more about the waste emplacement here: https://wipp.energy.gov/wipp_news_20221123-2.asp

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