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If you ever had an odor or indoor air quality issue within your facility you can appreciate the difficultly in identifying the sources or causes and responding to questions from employees.

Vapor Intrusion (VI)

Friday, March 23, 2018
Vapor Intrusion (VI)


The Construction Chart Book
Chris Schneider

The topic of Vapor Intrusion (VI) has been getting more attention in recent years as the EPA has identified it as a significant contaminant pathway into buildings. We at 1Source Safety and Health, Inc. have taken our extensive knowledge in indoor air quality, contaminants and data interpretation to develop strategies to respond to VI issues. I have included a few articles below that I hope you find helpful.

Please feel free to e-mail me and we can set aside some time to discuss how 1Source Safety and Health can assist you address Vapor Intrusion.

Chris Schneider, CIH, President

What is Vapor Intrusion?

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.

What is Vapor Intrusion? »

Vapor Intrusion Consulting

Vapor Intrusion Consulting

Vapor intrusion (VI) is receiving increasingly more attention in recent years as various states and the EPA have identified it as a significant contaminant pathway into buildings. As indoor air quality professionals we have long recognized that whenever a building operates in a negative air pressure mode that vapors under a building slab will likely find an infiltration pathway into the occupied space and may result in health concerns to the occupants, thereby increasing liability to the owner or employer.

Vapor Intrusion Consulting »

EPA's Vapor Intrusion Guide

EPA's Vapor Intrusion Guide

Vapor intrusion is one of many potential ways that people may come into contact with hazardous vapors while performing their day-today indoor activities. Depending upon building and site-specific circumstances, concentrations of chemical vapors arising in structures from vapor intrusion may threaten human health or safety. When human health or safety is threatened by vapor intrusion, response action is warranted.

EPA's Vapor Intrusion Guide »