In the context of radon mitigation, what does 'cubic feet per minute' (cfm) refer to?

The term 'cubic feet per minute' (cfm) is a measure of airflow rate, specifically how many cubic feet of air can pass through a space or a system in one minute. In the context of radon mitigation, understanding the airflow rate is crucial because it directly impacts the effectiveness of the ventilation system designed to reduce radon levels in indoor environments.

In radon mitigation systems, proper airflow helps to dilute the concentration of radon gas and enhance the removal of this harmful gas from the home. A well-designed system will ensure that the cfm is sufficient to lower radon concentrations to acceptable levels as set by health guidelines. Therefore, being familiar with cfm allows radon mitigation specialists to assess and optimize the performance of their systems effectively.

The other options do not pertain to cfm in the context of radon mitigation. They address different aspects that are unrelated to the specific measurement of airflow. Understanding airflow rates is essential for ensuring systems function as intended in maintaining safe indoor air quality.