Air and Radiation Division

What We Do: The Air and Radiation Division (ARD) is responsible for implementing the regulatory programs of the Clean Air Act and related authorities. In particular, ARD works with state, local, and tribal governments, industry, and others to achieve and maintain clean outdoor air, including reduction of exposures and risks associated with criteria and hazardous air pollutants. The Division also partners with a variety of stakeholders including communities, academia, schools, and health professionals to implement voluntary indoor environment efforts to improve public health where people live, work, and play. While many of the regulatory programs overseen by ARD are delegable to state, local, or tribal agencies, the Division directly implements programs that are not delegated. ARD also manages grant programs associated with the Clean Air Act and related authorities.