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Assessment Phase

Per- and Polyfluoroalkyl Substances (PFAS)

PFAS are a large and complex class of anthropogenic compounds whose prevalence in the environment are an emerging, worldwide priority in environmental and human health.

Per- and Polyfluoroalkyl Substances (PFAS-1)
Naming Conventions – Section 1 (Introduction)
Addresses naming conventions of some of the most commonly reported PFAS based on historical use, current state of science research related to environmental occurrence, and available commercial analyses.

Per- and Polyfluoroalkyl Substances (PFAS-1)
History of Use – Section 1 (Introduction)
Provides a summary of the discovery and application of PFAS, emergence of known health effects, reduction in PFAS production/use, and environmental impacts.

Per- and Polyfluoroalkyl Substances (PFAS-1)
Fate and Transport – Section 1 (Introduction)
Focuses on how the unique chemical and physical properties of PFAS affect their behavior in the environment.

Per- and Polyfluoroalkyl Substances (PFAS-1)
Site Characterization and Media – Section 1 (Introduction)
Provides an overview of site characterization for PFAS and media-specific occurrence of PFAS.

Aqueous Film Forming Foam (AFFF)

Aqueous Film Forming Foam (AFFF) is a highly effective firefighting product intended for fighting high-hazard flammable liquid fires that also impacts the environment.

PFAS Fact Sheet
This fact sheet outlines methods to properly identify, handle, store, capture, collect, manage, and dispose of AFFF to limit potential environmental impacts.

AFFF Training Video
The purpose of this video is to assist AFFF users, first responders, and regulators with understanding foam formulations, mechanisms for releases to the environment, and best management practices.