New ITRC Resource: Vapor Intrusion Toolkit!

ITRC has released a new Vapor Intrusion Toolkit, a resource that provides a comprehensive overview of vapor intrusion concepts, recommended practices, and decision-making approaches across a wide range of site conditions.

The Toolkit replaces, combines, and updates three previous ITRC vapor intrusion guidance documents (VI-1, PVI-1, and VIM-1). It reflects advances in science, policy, and field experience, and is designed to support regulators, practitioners, and stakeholders in conducting consistent and effective vapor intrusion assessments.

The toolkit includes the Vapor Intrusion Technical and Regulatory Guidance and a suite of fact sheets, technology information sheets, and checklists, all of which are individually available for download and use. Also provided is a series of YouTube Playlists featuring ITRC-produced videos and content from other organizations. Key topic areas addressed in the toolkit include:

Vapor intrusion fundamentals and conceptual site models
Site screening and investigation strategies
Sampling and analysis
Data evaluation and risk assessment
Modeling
Vapor intrusion mitigation
Community engagement

By integrating and updating prior guidance, the toolkit offers clear, practical frameworks supported by decision-support tools, visuals, and real-world examples to help practitioners confidently address vapor intrusion challenges and support consistent, science-based evaluations.

View Our New Vapor Intrusion Toolkit!

ITRC is a program of the Environmental Research Institute of the States (ERIS). ERIS is a 501(c)(3) organization incorporated in the District of Columbia and managed by the Environmental Council of the States (ECOS).