; (B) decision making on how best to deal with the thousands of perfluoroalkyl and polyfluoroalkyl substances; and (C) understanding the significance of the many exposure pathways for perfluoroalkyl and polyfluoroalkyl substances that exist; and (8) a consensus study by the National Academies would help inform decisions by the Federal Government, State governments, industry, and other stakeholders on how to best address perfluoroalkyl and polyfluoroalkyl substances. 3. Definitions In this Act: (1) Administrator The term Administrator means the Administrator of the Environmental Protection Agency. (2) Director The term Director means the Director of the National Science Foundation. (3) National academies The term National Academies means the National Academies of Sciences, Engineering, and Medicine. 4. National academies reports (a) Research assessments of PFAS exposure and toxicity (1) In general Not later than 90 days after the date of enactment of this Act, the Director, in consultation with the Administrator, the Secretary of Defense, the Director of the National Institutes of Health, and the heads of other Federal agencies with expertise relevant to understanding exposure to and toxicity of perfluoroalkyl and polyfluoroalkyl substances, shall enter into an agreement with the National Academies— (A) to conduct a 2-phase study in accordance with this subsection to identify research and development needed to advance human exposure estimations and toxicity and hazard estimations of individual perfluoroalkyl and polyfluoroalkyl substances or perfluoroalkyl and polyfluoroalkyl substances collectively