About the Office of Air and Radiation

What We Do

Related Information

The Office of Air and Radiation develops national programs, policies, and regulations for controlling air pollution and radiation exposure. OAR handles issues related to:
  • Acid rain
  • Indoor and outdoor air quality
  • Air pollution from stationary sources
  • Pollution from vehicles and engines
  • Radiation protection
  • Radon
  • Stratospheric ozone depletion

OAR is responsible for administering the Clean Air Act, the Atomic Energy Act, the Waste Isolation Pilot Plant Land Withdrawal Act, the American Innovation and Manufacturing Act, Infrastructure Investment and Jobs Act and other applicable environmental laws and programs.

Phone: (202) 564-7400 | EPA mailing addresses | Mail code: 6103A

Leadership

News Releases

Aaron Szabo, Assistant Administrator
 
Abigale Tardif, Principal Deputy Assistant Administrator
 
Betsy Shaw, Deputy Assistant Administrator for Management
 
Alexander Dominguez, Deputy Assistant Administrator for Mobile Sources
 
Katie Mills, Deputy Assistant Administrator for Permitting and Regional Matters
 
Pat Childers, Senior Tribal Program Coordinator
 

Organization

Office of Human Capital Management (OHCM)

OHCM focuses on:
  • Training and organizational development
  • Workforce planning
  • Performance management
  • Recruitment and outreach
  • Pay and leave administration
  • Personnel security
  • Facilities management

OHCM Organization

Pamela Christian, Director
  • Phone: (202) 564 - 3196
OHCM includes:
  • Recruitment and Operations Division
    Laycee Kent, Director
    • Phone: (202) 564 - 2140

Office of Program Management Operations (OPMO)

OPMO manages and oversees business operations, including:
  • Oversight and business operations
  • Strategic and annual planning
  • Performance measurement
  • Budget development and execution
  • Information management
  • Acquisition of grants and contracts
  • Financial management
  • Oversight and audit coordination
  • Records and property management
  • Travel and visitor coordination
  • Continuous improvement

OPMO Organization

Courtney Hyde, Director
  • Phone: (202) 564 - 1227
Michael Wolfe, Deputy Director
  • Phone: (202) 564 - 1295
OPMO includes:
  • Acquisition Management Division
    Tim Roberts, Director
    • Phone: (202) 564 - 6004
  • Budget Formulation and Planning Division
    Kelly Sigel, Director (Acting)
    • Phone: (202) 564 - 2331
  • Budget Execution Division
    Steve LaRue, Director
    • Phone: (202) 557 - 4233
  • Information Management Division
    Daniel Hopkins, Director
    • Phone: (202) 779 - 3893

Office of Air Program Support (OAPS)

OAPS focuses on:
  • Regulatory development and process management
  • Freedom of Information Act requests
  • Economics, international, trade and science-related cross-cutting issues
  • Continuous improvement and evaluation
  • Tribal engagement
  • Congressional engagement
  • Communications
  • Correspondence
  • Continuous improvement

OAPS Organization

John Shoaff, Director
  • Phone: (202) 564 - 0531
OAPS includes:
  • Regulatory Process and Transparency Division
    Jonathan Lubetsky, Director
    • Phone: (202) 564 - 3166
  • Cross-Cutting Issues Coordination Division
    Vacant, Director
  • Communications, Correspondence, and Congressional Division
    Vacant, Director

Office of Clean Air Programs (OCAP)

OCAP focuses on Clean Air Act and American Innovation and Manufacturing Act regulatory programs, including:
  • Establishing national emission standards for stationary sources
  • Setting national standards for ambient air quality
  • Running market-based programs for sulfur dioxide (SO2), nitrogen oxide (NOx), ozone depleting substances (ODS) and hydrofluorocarbons (HFC).

Programs and projects managed by OCAP

  • Stationary source standards:
    • New Source Performance Standards
    • National Emission Standards for Hazardous Air Pollutants
    • Nonhazardous Waste Incineration standards
    • Volatile Organic Compound Standards for Consumer and Commercial Products  
  • National Ambient Air Quality Standards (NAAQS)
  • Market-based programs:
    • Acid rain programs
    • ODS and HFC programs
  • Human health, environmental risk, and economic assessments
  • Multilateral agreements and obligations related to OCAP programs
  • Regulatory compliance
  • Stationary source reporting, monitoring, measurement and testing methods

OCAP Organization

Peter Tsirigotis, Director
  • Phone: (919) 541-5616
Vacant, Deputy Director
 
OCAP includes:
  • Impacts and Ambient Standards Division
    Erika Sasser, Director
    • Phone: (919) 541 - 3889
  • Chemicals, Coatings and Products Division
    Cynthia Newberg, Director
    • Phone: (202) 343 - 9729
  • Regulatory Assistance Division
    Sharyn Lie, Director
    • Phone: (202) 564 - 1092
  • Industrial Processing and Power Division
    Vacant, Director
  • Natural Resources Division
    Vacant, Director

Office of State Air Partnerships (OSAP)

OSAP focuses on establishing and supporting the Clean Air Act's cooperative federalism framework for national air quality management through:

  • Partnering with EPA's regional offices to provide coordination and support to state, local, and Tribal governments in implementing national ambient air quality standards, stationary source permitting and visibility protection programs
  • Encouraging collaboration and integration of implementation policies and strategies

Programs and projects managed by OSAP

  • Air emissions analysis
  • Air quality monitoring
  • NAAQS implementation
  • Regional haze program (visibility protection) 
  • Stationary source operating permits program
  • Stationary source preconstruction permitting program
  • Air quality regulation, guidance and policy development 
  • Air quality management training for state, local and Tribal air agencies
  • Data management solutions
  • Geospatial and modeling technologies

OSAP Organization

Scott Mathias, Director
  • Phone: (919) 541 - 5310
Rhea Jones, Deputy Director
  • Phone: (919) 541 - 2940
Vera Kornylak, Associate Director
  • Phone: (919) 541 - 4067
OSAP includes:
  • Air Quality Assessment Division
    Karen Wesson, Director
    • Phone: (919) 541 - 3515
  • Air Quality Planning Division
    Patrick Lessard, Director (Acting)
    • Phone: (919) 541 - 5383
  • Permitting and Program Support Division
    Paul Almodovar, Director (Acting)
    • Phone: (919) 541 - 0283
  • Information Management Division
    Martin Husk, Director (Acting)
    • Phone: (919) 541 - 3621

Office of Transportation and Air Quality (OTAQ)

OTAQ is responsible for reducing air pollution from mobile sources  by establishing, implementing and ensuring compliance with national emission standards for vehicles, equipment, engines and fuels. OTAQ’s programs address emissions from the range of mobile sources: cars and light trucks, large trucks and buses, farm and construction equipment, lawn and garden equipment, marine engines, aircraft, and locomotives.

OTAQ's primary activities include:
  • Developing regulations and emissions control programs under Title II of the Clean Air Act 
  • Carrying out regulatory implementation, analysis, and compliance programs to ensure adherence to emission control programs in the mobile source sector
  • Implementing statutory programs to reduce emissions from the legacy vehicle fleet

OTAQ's National Vehicle and Fuel Emissions Laboratory provides OTAQ with emissions testing services in support of rulemakings, certification, enforcement actions, and test procedures development.

OTAQ Organization

Sarah Dunham, Director
  • Phone: (202) 564 - 1682
Ben Hengst, Deputy Director
  • Phone: (202) 564 - 1495
OTAQ includes:
  • Transportation Sector Impacts and Standards Division
    Bill Charmley, Director
    • Phone: (734) 214 - 4466
  • Implementation, Analysis and Compliance Division
    Byron Bunker, Director
    • Phone: (734) 214 - 4155
  • Testing and Advanced Technology Division
    David Haugen, Director
    • Phone: (734) 214 - 4366
  • Legacy Emissions Division
    Karl Simon, Director
    • Phone: (202) 564 - 7918

Office of Radiation and Indoor Air (ORIA)

ORIA’s mission is to protect the public and the environment from the risks of radiation and indoor air pollution. The office coordinates across the agency and with other federal, state, Tribal, and non-governmental organizations to carry out its mission. ORIA develops criteria, standards, guidance, policies, and programs to limit unnecessary radiation exposure and control exposure to indoor air pollutants. The office:
  • Provides technical assistance to states and Tribes through EPA's regional offices, and to other national and international organizations having radiation and indoor air protection programs
  • Directs an environmental radiation monitoring program
  • Responds to radiological emergencies
  • Evaluates and assesses the overall risk and impact of radiation and indoor air pollution

Programs and projects managed by ORIA

ORIA Organization

Sharon White, Director (Acting)
  • Phone: (202) 564 - 5048
Sarah Hoyt, Deputy Director (Acting)
  • Phone: (202) 566 - 1314
ORIA includes:

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Last updated on November 3, 2025