The Ohio EPA Division of Environmental Response and Revitalization’s (DERR) issued revised vapor intrusion Guidance. The document was developed using established guidance from the United States (U.S.) Environmental Protection Agency (EPA), the Interstate Technology Resource Council (ITRC), American Society of Testing and Materials (ASTM), and other states. The agency gave a special thanks to to the California Environmental Protection Agency, Department of Toxic Substances Control for granting permission to use the state guidance as a template.
The revised guidance applies to sites in the enrolled in the state Voluntary Action Program (VAP) and Remedial Programs (CERCLA, RCRA, and Federal Facilities Section). The new guidance includes sections on petroleum vapor intrusion, evaluation of imminent hazards and long-term management for sites with mitigation systems.