Vapor Intrusion (VI) Investigation & Mitigation

Vapor Intrusion is the migration of volatile chemicals from subsurface soil and/or groundwater into the indoor air of overlying buildings. This can occur when volatile chemicals are discharged into the ground from underground storage tanks, dry cleaners, gasoline stations, or other industrial processes. As a gas, these volatile chemicals can migrate upward and into buildings through cracks in the foundation, around penetrations, or through underlying utilities, resulting in potential health concerns for occupants.

Indoor air quality and vapor intrusion have become a primary focus of regulators, building owners and managers, and building occupants, often times requiring an immediate response. Excel provides turn-key vapor intrusion management services from initial investigation to design and implementation of vapor mitigation systems as well as operation, maintenance, and monitoring of passive and active vapor mitigation systems.