Environmental

Colorado's 'Vapor Intrusion' risk occurs when:

AMoisture from precipitation enters a building
BVolatile chemicals from contaminated soil or groundwater migrate as vapors into buildings above contaminated sites✓ Correct
CNatural gas from utility lines enters structures
DRadon from granite countertops accumulates indoors

Explanation

Vapor intrusion occurs when volatile chemicals from contaminated soil or groundwater beneath a building migrate upward as vapors into the indoor air, creating health risks. This is an adverse material fact for properties near former industrial sites or contaminated land in Colorado.

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