What is vapor intrusion?
Chemicals used in commercial activities such as dry-cleaning chemicals, chemical degreasers, and gasoline are sometimes spilled or leaked into soil and groundwater. These chemicals, which contain volatile organic compounds, often become vapors which can travel from contaminated groundwater and soil and enter into buildings. This process is known as vapor intrusion.
Sigma expertise and experience
The Sigma Group has preformed vapor intrusion evaluations and designed vapor mitigation systems at sites throughout the Midwest.
Sigma’s experience encompasses residential, commercial, retail, industrial, healthcare, and governmental facilities.
Sigma has sampled, pilot tested, designed and installed vapor mitigation systems for new and existing facilities. Sigma has also taken incident command to deal with emergency releases of vapor substances that impact or threaten to impact human health, safety, welfare, and the environment.
Sigma’s capabilities in vapor sampling activities are founded on the following attributes:
- Subsurface vapor source and migration – Sigma understands the subsurface issues that can impact vapor intrusion.
- Occupant exposure – Sigma has full capabilities in indoor air quality services to not only address vapor, but a spectrum of indoor air quality-related problems including allergens, asbestos, bacterial / mold organisms, carbon monoxide, metal, noxious odors, particulates, radon, silica, smoke and volatile organic compounds.
- Building / Infrastructure – Our skills and experience in geology, hydrogeology, indoor air quality, pre-renovation / demolition hazardous materials management, building conditions assessment, and construction management.
About this service.