The course on Soil Vapour Intrusion – Evolution of Practices, Current Issues and Future Directions will cover the latest science, approaches, and methods for effective management of soil vapour intrusion at contaminated sites. Much work and progress has been made in the vapour intrusion practice over several decades including important learnings on conceptual site models and vapour attenuation and variability obtained from site data. Participants will learn about the strengths and limitations of current site screening approaches, refined assessment frameworks, preferential pathway investigations, and new tools and approaches for better outcomes. The implications and both positive aspects and limitations of current approaches for site screening will be discussed. Key issues for vapour intrusion mitigation including design considerations, optimization and monitoring will be covered. The course will conclude with identification of gaps and research needs and a panel discussion.

The goal of the course is to survey and summarize the key learnings and issues and future directions in vapour intrusion assessment and management drawing upon the expertise and knowledge of course facilitators, and current research and practice. It will present a cross-jurisdictional perspective considering the best available practices. The course is intended for anyone who would benefit from an immersive and state of the science review of vapour intrusion combined with practical approaches and tools to improve vapour investigations and mitigation.