What is the SGM radon exposure limit for adults calculated over a 12-month period?

The SGM (Secondary Guideline for Radon) radon exposure limit for adults, calculated over a 12-month period, is indeed set at 5,700 pCi/L/days. This number is derived from the understanding that an annual exposure to radon should be managed to minimize risk while considering the average background radiation levels and the potential health risks associated with radon exposure.

This value is important for establishing safety standards and guidelines because it is based on extensive research that correlates radon exposure to long-term health outcomes, particularly lung cancer. The calculated limit represents a balance between practical exposure levels and the need for public safety, especially in residential settings where individuals may spend significant amounts of time.

Understanding this limit is crucial for mitigation specialists and those involved in radon management, as it guides both the assessment of indoor radon levels and the implementation of mitigation strategies to ensure that radon concentrations remain within a safer range for public health.