EPA Regional Programs


Nov. 13, 2019
Availability of the Systematic Review Protocol for the PFDA, PFNA, PFHxA, PFHxS, and PFBA IRIS Assessments
The Environmental Protection Agency (EPA) is announcing a 45-day public comment period associated with release of the Systematic Review Protocol for the perfluorodecanoic acid (PFDA), perfluorononanoic acid (PFNA), perfluorohexanoic acid (PFHxA), perfluorohexanesulfonate (PFHxS), and perfluorobutanoic acid (PFBA) Integrated Risk Information System (IRIS) assessments. This protocol document presents the methods for conducting the systematic reviews and dose response analyses for these assessments as well as summarizes the Agency's problem formulation activities. Public input will help to inform the subsequent development of draft assessments for these per- and polyfluoroalkyl substances (PFAS) chemicals. The 45-day public comment period ends 23 December 2019. For technical information on the protocol, contact Dr. James Avery, Center for Public Health & Environmental Assessment; tel: 202-564-1494; or email: avery.james@epa.gov.

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Last Updated: July 16, 2014