Vapor intrusion is rapidly becoming a key issue of concern for owners and prospective buyers of commercial and industrial properties – especially those with historical dry cleaning operations. The effect of changing regulatory standards and increasing enforcement has resulted in increased liabilities associated with this legacy contamination issue. Our due diligence team routinely addresses vapor intrusion issues during time-critical property transactions. When intrusive investigations are required, we can rapidly respond with assessment strategies appropriate to our clients' objectives. While many of our competitors apply limited testing approaches combined with risk modeling to “argue out” of the problem, we have found that vapor intrusion is an issue that can be effectively resolved with rigorous and defendable data that accurately assess exposure conditions. We also maintain that most vapor intrusion sites can be cost-effectively mitigated through engineering controls, or by using active or passive mitigation systems.
Our vapor intrusion expertise includes assessment of all subsurface media, sampling of indoor and outdoor air quality, and use of diagnostic tools such as temporal-spatial (continuous real-time) sampling approaches that reveal patterns that provide more certainty about exposure risk and source identification. We also offer permitting, design, and implementation of mitigation and remediation measures as needed. Where appropriate, we use institutional and engineering controls to resolve vapor intrusion issues.
We actively install:
- Soil vapor extraction systems
- Subslab depressurization systems
- Active ventilation systems
- Passive ventilation systems
- HVAC upgrades
- Vapor barriers
- Aerated floor systems
We work with regulators, private- and public-sector clients, attorneys, lenders, developers, and insurance carriers to evaluate vapor intrusion conditions, assess sources, and develop innovative solutions that meet the needs of all stakeholders.