Question 34

Radon is a common soil contaminant that often requires mitigation.

Radon is a naturally occurring radioactive gas that can seep into homes from the ground and is recognized as a significant soil contaminant due to its health risks, particularly lung cancer.

A) Styrene

Styrene is primarily an industrial chemical used in the production of plastics and resins. While it can be a contaminant in specific contexts, it is not commonly found in soil and does not typically require mitigation in the same way that radon does.

B) Formaldehyde

Formaldehyde is a volatile organic compound that can be released from building materials and household products, but it is not a common soil contaminant. Its primary health risks are associated with indoor air quality rather than soil contamination, making it less relevant in this context.

C) Radon

Radon is a colorless, odorless gas that naturally emanates from the decay of uranium in soil and rocks. It is a recognized soil contaminant that poses significant health risks, necessitating mitigation efforts in affected areas, which makes it the correct answer.

D) Carbon monoxide

Carbon monoxide is a colorless, odorless gas primarily produced by incomplete combustion of fossil fuels. It is more commonly associated with indoor air pollution and safety hazards rather than soil contamination, thus it is not a relevant option in this context.

Conclusion

Radon is definitively the correct answer as it is a prevalent soil contaminant that poses serious health risks and often requires specific mitigation measures. In contrast, the other options either do not pertain to soil contamination or are not as commonly associated with the need for remediation efforts.