; and (II) develop an approach for conducting a human health hazard assessment of the identified perfluoroalkyl and polyfluoroalkyl substances; (ii) give consideration as to whether chemical category-based approaches for assessing hazards would be appropriate for evaluating perfluoroalkyl and polyfluoroalkyl substances as a group; and (iii) identify research that is needed to advance toxicity and hazard assessments of individual perfluoroalkyl and polyfluoroalkyl substances or perfluoroalkyl and polyfluoroalkyl substances collectively. (B) Report Not later than 1 year after the date on which the phase I report is submitted to Congress under paragraph (2)(B)(i), the National Academies shall— (i) submit to Congress a report containing the findings and recommendations of the study described in subparagraph (A); and (ii) make the report under clause (i) available on a publicly accessible website. (b) Research assessments of management and treatment alternatives for PFAS contamination in the environment and development of safe alternatives (1) In general Not later than 90 days after the date of enactment of this Act, the Director and the Administrator, in consultation with the Secretary of Defense and the heads of other Federal agencies with expertise relevant to the development of alternatives to perfluoroalkyl and polyfluoroalkyl substances and the management and treatment of perfluoroalkyl and polyfluoroalkyl substances, shall jointly enter into an agreement with the National Academies— (A) to conduct a 2-phase study in accordance with this subsection to better understand— (i) the research and development needed to advance the understanding of the extent and implications of environmental contamination by perfluoroalkyl and polyfluoroalkyl substances; (ii) the best methods to manage and treat that contamination; and (iii) the development of safe alternatives to perfluoroalkyl and polyfluoroalkyl substances