1:00pm-3:00pm
he Vapor Intrusion 101 training series provides an overview of vapor intrusion (VI) and presents information from the 2026 ITRC VI Toolkit (which includes fact sheets, technology information sheets, and checklists).
This course introduces participants to the fundamentals of vapor intrusion, the process by which vapor-forming chemicals in contaminated soil or groundwater volatilize and migrate into buildings. The course will discuss sources, pathways, and receptors. It will identify and assess VI risks in various settings (residential, commercial, industrial) and familiarize participants with regulatory frameworks and guidelines (e.g., USEPA, state-specific regulations). The participants will gain working knowledge of how to develop a Conceptual Site Model (CSM), design and implement sampling strategies, establish data quality objectives (DQOs), and conduct data and risk evaluations. It will provide an overview of mitigation strategies, including various closure strategies, land use covenants, and institutional controls.
Session 1 will focus on:
- What is Vapor Intrusion
- VI Exposure Pathway
- VI in Practice - including common CSMs, Scenarios, and Chemicals
- Potential Limiting Factors for VI - PVI vs Chlorinated VI, Geology, Hydrogeology, and Building Operating Conditions
- How is VI Different & Challenges in Evaluating VI
Session 2 will focus on:
- How VI is Different
- How to assess VI - CSM, Sample Collection, Data Interpretation, Risk Assessment, and Project Life Cycle
- Managing VI Risk at a Site - Mitigation, Remediation, Monitoring
- What does Closure look like & Various Exit Strategies
The course will provide connections to the 2026 ITRC VI Toolkit to help the audience understand how to find and use these new resources for VI sites.