Welcome to the Association of Vapor Intrusion Professionals

AVIP provides its members with a community of professionals dedicated to advancing the industry and science of vapor intrusion. The purpose of this association is to establish accepted and recognized credentialing standards for vapor intrusion professionals, and serve as a resource of information for the general public and those in search of vapor intrusion professionals for the purpose of securing their services related to vapor intrusion.

The Benefits of Membership

  • Increased Visibility in the Industry 
  • Searchable Profile - "Find a Professional"
  • A Voice in standards of practice for federal and state regulations
  • VI Community 
  • Access to updated Regulations and Standards 
  • State and Local Government Contact Information for VI
  • Training
  • Certification
  • Search for VI Vendors/Suppliers
  • Discount on AVIP Conferences
  • Discount on All Training
  • Networking Events
  • Member Events
  • Locate a Member
  • Sign up for Alerts
  • Use of the Approved AVIP Logo Badge for Members and Sponsors
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What Is Vapor Intrusion?

Vapor intrusion occurs when there is a migration of vapor-forming chemicals from any subsurface source into an overlying building. Recognition of soil vapor intrusion to buildings and other enclosed spaces occurred in the 1980s with concerns over radon intrusion. Subsequently, there was an increasing awareness that anthropogenic chemicals (e.g., petroleum hydrocarbons and chlorinated solvents) in soil, groundwater, and sewers and drainlines could also pose threats to indoor air quality via the vapor intrusion pathway.

Vapor-forming chemicals may include:

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