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About the Office of Resources and Business Operations (ORBO)

What We Do

The Office of Resources and Business Operations (ORBO) serves as the principal staff to the Assistant Administrator on matters related to program management, budget, human resources, communications, workforce development programs, and administrative operations within OMS. ORBO staff also oversees the agency’s federal advisory committee management program and directly manages four federal advisory committees.


ORBO Managed Programs and Projects

  • Disadvantaged Business Enterprise Program

Mail Code: 3101A | EPA mailing addresses

Location: EPA Headquarters at Washington, D.C. Federal Triangle campus


ORBO Organization

Yulia Kalikhman, Director

Greg Scott, Deputy Director

Human Capital & Administration Division
  • Jan Jablonski, Director
Resources Management Division
  • Laurel Ajabi, Acting Director

About EPA

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  • Headquarters Offices
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  • EPA Organization Chart
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Contact EPA
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Last updated on January 3, 2025
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