PFAS Health Exposure Assessment: Inconsistency and Challenges
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This presentation will address characterization and remediation challenges in light of rapidly evolving scientific understanding and regulations at the state and federal level.

To date, the vast majority of efforts to characterize PFAS exposure have focused on drinking water ingestion. Methods are in development to help characterize the nature and extent of exposures via additional pathways (e.g., inhalation of ambient air, recreational exposures related to surface water contact and ingestion of recreationally caught fish, and ingestion of home-grown fruits and vegetables). As analytical methods develop, the limiting factors to inform effective characterization of current and potential future conditions become the lack of understanding regarding the driving pathways of concern and their significance based on the absence of applicable toxicity criteria.

This presentation characterizes the relative expected ranking of PFAS exposure pathways of concern based on a community-level exposure case-study, a consumer products exposure-based case study, inconsistency in the derivation of federal toxicity criteria and state compliance standards, the options for development of provisional toxicity factors, and methods to focus investigation needs, reduce project expenditures and inform defensible site and risk management.

Publication Summary

  • Geosyntec Authors: Travis Kline
  • All Authors: Travis Kline
  • Title: The National Ground Water Association's (NGWA) Fate of PFAS: From Groundwater to Tap Water Conference
  • Event or Publication: Event
  • Practice Areas: Per- and Polyfluoroalkyl Substances (PFAS)
  • Citation: Travis Kline, MEM (Washington D.C.) and Dylan Eberle, Ph.D.(Massachusetts)will present at the National Ground Water Association's (NGWA) Fate of PFAS: From Groundwater to Tap Water Conference on August 12, 2020.
  • Date: August 12, 2020
  • Location: Virtual Conference
  • Publication Type: Platform Presentation