(Part 2 of a 3-Part Series) As we learned in Part 1, vapor intrusion (VI) is the migration of chemical vapors into a building from its subsurface (beneath its foundation). The vapors may originate from contamination within soil, groundwater, or other sources (for example, petroleum free product around a nearby underground storage tank).  Identification of […]

(Part 1 of a 3-Part Series) What is vapor intrusion? Vapor intrusion (VI) is the migration of vapor-forming chemicals from any subsurface contamination into an overlying enclosed space that can pose a threat to indoor air quality. Vapor-forming chemicals may originate from contaminated soil, groundwater, sewer, or other sources. These sources of contamination may be […]