Environmental
Vapor intrusion in real estate refers to:
ARain and moisture entering a building through the roof
BContaminated vapors from soil or groundwater migrating into buildings through cracks in foundations or floors✓ Correct
CNatural gas leaking from utility pipes into homes
DIndoor air quality issues caused by mold
Explanation
Vapor intrusion occurs when volatile chemicals from contaminated soil or groundwater (such as dry cleaning solvents or petroleum products) vaporize and migrate upward into buildings through cracks, sumps, or utility penetrations. It is an increasingly recognized environmental and health concern in real estate due diligence.
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