Vapor Intrusion Assessment & Testing

Vapor Intrusion is the result of chemical vapors, particularly semi-volatile or Volatile Organic Compounds (VOCs) migrating from contaminated soil or groundwater, and impacting the indoor air of overlying buildings.  These chemical vapors can leak into openings in cracked foundations, basements or sewer lines.  They can also migrate through the floor slab, depending on the identified compounds.

Vapor can sometimes migrate further than soil or groundwater, and therefore pose a greater human health risk due to the prevalence of the vapor interaction and the difficulty of avoiding exposure.  The identification of a vapor intrusion may also result in safety hazards as well as a decrease in property value and/or remediation or mitigation for a property to be viable and habitable.

PM Environmental consultants are experts in completing vapor intrusion assessments and due diligence activities to identify potential or knows sources of vapor intrusion.  Our team performs soil, groundwater, soil gas and/or indoor air assessments to determine if vapor intrusion standards are met, or if further evaluation, remediation, or mitigation is necessary.

PM has success in mitigating vapor intrusion on a variety of projects through the installation of Vapor Barriers, which is typical for new construction, and with Sub-Slab Depressurization Systems, which are common mitigation systems for existing construction. 

Related Articles

PM Environmental Clients Awarded $2.45 Million in EPA Brownfield Grants

In May of 2022, the United States Environmental Protection Agency (EPA) announced that 227 communities were selected to receive 237 grant awards for a total of $147.5 million in Brownfields Assessment, Revolving Loan Fund, and Cleanup Grant funding. The purpose of these grants is to assess, clean up, and redevelop underutilized properties in the community…

Revitalizing Pontiac, MI with the Creation of the Webster Community Center

“My neighborhood deserves the same sorts of resources, recreation spaces, services, and enrichment activities as any other community,” says Coleman Yoakum, Executive Director of Micah 6 Community in Pontiac, Michigan. Micah 6 Community is a neighborhood-based community development corporation and 501(C)3 dedicated to serving their community in the city. Micah 6’s efforts have included planting…

EPA Community-Wide Assessment Grant Funding Awarded to the Regional Planning Commission of Greater Birmingham

The Regional Planning Commission of Greater Birmingham (RPCGB) was recently the recipient of a $500,000 Community-wide Assessment Grant from the United States Environmental Protection Agency (EPA). The RPCGB, a regional council serving six counties and 84 communities throughout central Alabama, was awarded the grant in May 2022 as part of the EPA’s Fiscal Year 2022…

Ready to start your project?

Our team of engineers and consultants helps you manage your project with confidence. Find out how we can help you with your project.