Colorado's 'Vapor Intrusion' risk occurs when:
Why Volatile chemicals from contaminated soil or groundwater migrate as vapors into buildings above contaminated sites Is Correct
Answer B: Volatile chemicals from contaminated soil or groundwater migrate as vapors into buildings above contaminated sites
Vapor-forming chemicals can migrate from a subsurface source into an overlying building; this is how the U.S. EPA describes vapor intrusion, comparing it to radon gas seeping into homes. In practice the source is often solvents or other volatile chemicals in contaminated soil or groundwater. It is a different problem from moisture entering a building from precipitation or natural gas leaking from a utility line, so the keyed answer is the one describing chemical vapors from contaminated soil or groundwater.
Source: U.S. EPA, Vapor Intrusion
Exam Tip: Environmental
Environmental questions test knowledge of hazards like asbestos, lead-based paint, radon, and mold. Know the disclosure requirements and when a professional inspection is required. CERCLA liability is strict, joint, and several.
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Key Terms to Know
Local government regulations that control land use by dividing areas into zones specifying permitted uses, building sizes, and densities.
Adverse PossessionA doctrine by which a person can gain legal title to another's land by openly, continuously, and adversely occupying it for a statutory period.
VarianceOfficial 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 DomainThe power of government to take private property for public use, with the requirement to pay the owner just compensation.
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