EPA's 2026 State of VI Science Workshop 04 at AEHS West: Vapor Intrusion Assessment, Health Impacts, Mitigation and Simulation (Web-based, On-Demand)
The workshop presentations provide a comprehensive overview of vapor intrusion (VI), covering fundamental concepts, risk assessment, and practical response strategies. They emphasize the importance of conceptual site models, appropriate statistical interpretation of environmental data, and current best practices for evaluating soil gas and groundwater contributions to indoor air risk. Emerging issues such as updated health concerns and the potential for vapor-forming PFAS are highlighted alongside advances in modeling and simulation tools used to assess VI pathways. The sessions also address mitigation and remediation approaches, including cost-effective construction techniques and vapor flux reduction methods, while underscoring the importance of community perspectives, communication, and trust in implementing effective VI responses.