Vapor Intrusion: What You Can’t See Can Cost You

Background

What is Vapor Intrusion?

VI subsurface evaluation

Determining the presence of a source of contamination is often established through the evaluation of soil, groundwater, and soil gas laboratory analytical data. A source could relate to a historical or current release or event associated with the former or current operations at the site (i.e. dry cleaning, manufacturing, fueling station, etc.). However, a source does not always have to be present onsite for there to be a potential VI risk. Migrating subsurface vapors emanating from adjacent and adjoining properties can also pose a risk for vapor intrusion to your property. As detailed in the United States Environmental Protection Agency (USEPA) Draft Vapor Intrusion Guidance and the ASTM E2600 -10 Standard Guide for Vapor Encroachment Screening, any building structure located within 100 feet laterally or vertically of a known subsurface vapor source should be considered “near” for purposes of vapor intrusion investigations. All media (soil, groundwater, and soil gas (subsurface gas)) should be considered when evaluating the VI risk for your site. Comparison of the laboratory analytical data to the appropriate regulatory criteria and/or screening levels can assist in determining the “next steps” within the VI evaluation. Each VI evaluation/investigation should be conducted on a site specific basis. When conducting the evaluation there are three key components to consider:

The type and concentration of contaminants present
The soil and groundwater conditions
The existing (or proposed) building layout and structure.

Vapor Intrusion: What You Can’t See Can Cost You

Vapor Intrusion: What You Can’t See Can Cost You

Background

What is Vapor Intrusion?

VI subsurface evaluation

Continued Subsurface Investigation vs. Presumptive Remedy

Presumptive Remedies

Conclusion

Underground Storage Tank Regulation Update

Client Focused New Website and the AKT Collective

COVID-19 Communication Continued

COVID-19 Building Decontamination Services

EBA Virtual Conference

Construction Loan Consultant Expectations

Sustainability Transitions

Michigan’s Brownfield Law Expands Definition of Demolition

A Statewide Petroleum Cleanup Program That’s Working

PFAS – Uncertain Times

Going to School on Vapor Intrusion

Economic Development Funding for Underground Storage Tanks

Michigan MUSTA Program at Work

Michigan Seeks to Expand UST Cleanup Funding

Chicagoland’s Industrial Growth Zones Program

Illinois Real Estate – Redeveloping Environmentally-Impaired Properties

Are You Ready for the Revisions to California’s Safe Drinking Water Act?

Improving Michigan’s Brownfield Redevelopment Act

Driving Legislative Improvements to Economic Redevelopment in Michigan

Environmental Services Nationwide