If an initial test for a motivated homeowner returns a result of 9.7 pCi/L, what should you do next?

The correct course of action after receiving an initial test result of 9.7 pCi/L is to run a short-term test to confirm the results. This figure indicates a potentially significant radon level, since the action level for radon in residential properties is typically set at 4.0 pCi/L. Conducting a short-term test allows for the verification of the high radon measurement.

Confirming results with a second test is crucial before taking further steps, such as recommending mitigation. Radon levels can fluctuate, and a short-term test will help to ensure that the elevated level is consistent and not just a temporary spike due to environmental factors.

Once the results from the short-term test have been analyzed, appropriate actions, such as recommending mitigation if necessary, can be effectively carried out based on confirmed data.