What must be included in a report if the radon test result is under the action level?

In radon measurement reporting, when test results fall below the action level, it is essential to provide recommendations for ongoing monitoring, especially considering that radon levels can change over time due to various factors such as changes in building occupancy and conditions. Hence, advising on a retest every five years ensures that residents remain aware of any potential fluctuations in radon levels that could pose health risks.

Providing this recommendation acknowledges the dynamic nature of radon concentrations and promotes proactive measures to maintain safe indoor air quality over time. Continuous awareness is an important aspect of radon testing, as it helps homeowners take responsibility for their indoor environment, ensuring that they remain informed and can act if levels rise in the future.

While a summary of potential health effects, a description of testing methods, and notification that no further action is necessary may be useful in other contexts, they do not specifically address the importance of ongoing testing and vigilance in maintaining a safe home environment regarding radon exposure. Thus, the best practice in this scenario is to recommend retesting at regular intervals.