Environmental

What is 'vapor intrusion' and why is it a growing concern in Illinois real estate?

AAir infiltration through cracks in the building envelope; an energy efficiency issue

BThe migration of volatile chemicals from contaminated soil or groundwater into buildings through foundations, posing indoor air quality risks✓ Correct

CSteam and moisture from the ground affecting basement foundations

DA radon testing method used in Illinois new construction

Explanation

Vapor intrusion occurs when volatile contaminants (TCE, PCE, petroleum products) in soil or groundwater evaporate and migrate through the ground into buildings. Occupants may be exposed to toxic vapors through cracks in foundations or utility penetrations.

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Local government regulations that control land use by dividing areas into zones specifying permitted uses, building sizes, and densities.

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Official permission to use land in a way that does not conform to the applicable zoning ordinance, granted by a zoning board when strict enforcement would cause undue hardship.

Eminent Domain

The power of government to take private property for public use, with the requirement to pay the owner just compensation.