Vapor Intrusion Evaluation and Mitigation Services

Environmental Engineering and Consulting Services

Assisting Clients with Vapor Intrusion Issues

ECS assists clients by evaluating the potential for VI occurrence at existing and proposed future structure footprints and, when necessary, assists with mitigation-strategy design and implementation.

We perform vapor intrusion design and mitigation activities for brownfields, voluntary clean-ups, hazardous sites and underground storage-tank programs. We work with real estate developers, fast-food restaurant owners, operators of manufacturing facilities, brownfield developers and others.

If you want to evaluate the potential for VI occurrence, it’s time to engage with an expert environmental consultant from ECS.

Assisting Clients with Vapor Intrusion Issues

ECS assists clients by evaluating the potential for VI occurrence at existing and proposed future structure footprints and, when necessary, assists with mitigation-strategy design and implementation.

If you want to evaluate the potential for VI occurrence, it’s time to engage with an expert environmental consultant from ECS.

Understanding Vapor Intrusion

Vapor intrusion (VI) occurs when vapor-forming chemicals migrate from a subsurface source—such as contaminated soil or groundwater—into an overlying building or enclosed structure. Contaminants include volatile organic compounds (VOCs) such as chlorinated solvents, petroleum products and methane. The signs of VI are not obvious, and risks include chronic exposure resulting in a variety of health effects. Additionally, methane gas brings risks of flammability or explosivity and can also be an asphyxiant.

Any structure on or near VOC sources can be affected. VOCs are commonly found at or near gas stations, dry cleaners, manufacturing facilities, landfills, power plants, military bases, airports and more. Vapor intrusion is not restricted to the source of VOCs—it can also affect nearby businesses and homeowners.

Understanding Vapor Intrusion

VOC Sample Collection and Analysis

Our experienced technicians specialize in collecting the following for analysis and assessment of VOCs:

Exterior soil gas
Sub-slab soil gas
Indoor air samples
Pressure measurements for methane gas

Vapor Intrusion Mitigation Systems by ECS

ECS is experienced with the design, installation and operation and maintenance of vapor intrusion mitigation systems (VIMS) including:

Vapor barriers
Passive and active sub-slab depressurization systems (SSDS)
Crawl-space venting systems

VIMS applications are similar to radon mitigation; although, they are distinctly different services offered by ECS. If needed, our experts would be happy to clarify the differences and help you determine which service is best for your project’s needs.

ECS’ Approach to Conducting VI Assessments

ECS uses United States Environmental Protection Agency (EPA) and state guidelines and policies regarding VI assessment.

In addition, ECS performs vapor-encroachment condition (VEC) screening for real estate due diligence in accordance with ASTM E2600-22 Standard Practice for Assessment of Vapor Intrusion into Structures on Property Involved in Real Estate Transactions.

Related environmental services

Reach Out for Expert Vapor Intrusion Evaluation Services

ECS draws on our many years of experience and knowledge of VI evaluation, mitigation strategies, design and implementation. Contact us to speak with our environmental specialists.

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