For how many years must measurement reports be kept, due to potential delayed effects of radiation exposure?

The requirement to retain measurement reports for six years is based on the understanding that the health effects of radon exposure can develop over time, sometimes long after the exposure has occurred. The six-year period allows for the tracking of radon levels in a property and their potential impact on occupants, especially considering that radon-related health issues, like lung cancer, can take several years or even decades to manifest. Maintaining records for this duration ensures that property owners, regulators, and health professionals can access historical data if necessary, facilitating informed decisions regarding building safety and occupant health.

This retention period aligns with practices in many regulatory frameworks, which recognize the importance of being able to review past measurements to assess long-term exposure risks more effectively. Keeping detailed records not only supports compliance with safety standards but also empowers individuals to take proactive measures in mitigating radon-related risks.