Vapor Intrusion Assessment Solutions

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 (e.g., petroleum hydrocarbons and chlorinated solvents) in soil, groundwater, and sewers and drainlines could also pose threats to indoor air quality via the vapor intrusion pathway.

Vapor Intrusion assessments can be one of the most challenging environment assessments to perform. Every site is different and evaluating exposure pathways can be problematic. When performing these investigations decisions on analytical data collected can have both significant health and financial implications. Confidence in both sample collection and data quality are critical to determine next steps for resolution. Compliance Engineering has a strong history of consistent performance of delivering quality data studies that meets stringent regulatory requirements in a timely manner in accordance with the regulatory requirements of the states where we are licensed. We specialize in providing services that include regulatory negotiation and litigation support, soil gas sampling, indoor air quality (IAQ) monitoring, mathematical modeling, customized mitigation system design and optimization, and ventilation assessment. Vapor Intrusion studies typically involve sampling indoor and ambient air, soil vapor and/or groundwater. The Compliance Engineering team perform vapor intrusion investigation studies at residential, commercial, and industrial properties on a frequent basis.