MDEQ ⟩ Water ⟩ Groundwater Assessment and Remediation ⟩ Library ⟩ General ⟩ Vapor Intrusion Vapor Intrusion Click on the links below to download resource documents. ITRC Vapor Intrusion Pathway: A Practical Guideline (January 2007) LINK ITRC Petroleum Vapor Intrusion Guidance Document LINK Vapor Intrusion Back MDEQ ON FACEBOOK MDEQ