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Evaluating the Vapor Intrusion Pathway
Hosted by Northwest Environmental Training Center

Over the past fifteen years, vapor intrusion (VI) has grown to become a significant and challenging environmental issue. This course provides an overview of the vapor intrusion exposure pathway including its scientific foundation, regulatory framework, and the technical aspects of investigating and remediating contaminated vapor sites. The class will cover topics such as: screening sites for potential vapor intrusion concerns, conducting field investigations, sampling techniques, data analyses, exposure point calculations, the Johnson and Ettinger predictive model, vapor intrusion risk assessment, vapor intrusion mitigation, and remediation. Participants will work through practical problems and typical site scenarios based on case studies of established vapor intrusion sites. This course provides a comprehensive introduction for those new to the field, and will also provide insights, data analysis techniques, and the latest research for more advanced participants, including:
• Best practices for conducting investigations to collect quality data
• Importance and application of multiple lines of evidence to ensure quality decision- making when evaluating data
• Build solutions for VI issues through understanding of mitigation options
• Review of CA DTSC VI guidance documents

Intended Audience: Environmental professionals seeking an improved understanding of vapor intrusion with an emphasis on sampling, assessment and modeling. The material is intended for practitioners working on remediation of hazardous substance release sites and brownfields redevelopment.
Registration: $575 /$475*
(*reduced tuition available to employees of Native American tribes, nonprofits, and government agencies; students; and NAEP members).

For general information contact Jade Sepolen via e-mail at

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