What is the recommended height for a radon mitigation discharge point above grade?

The recommended height for a radon mitigation discharge point above grade is at least 10 feet. This standard is put in place to ensure that radon gas is effectively dispersed into the atmosphere, reducing the risk of re-entry into the building. When the discharge point is elevated, it allows for better dilution of the radon before it can settle back down near openings in the structure, such as windows or doors.

By positioning the discharge point at this height, it minimizes potential health risks associated with inhaling radon, which is a known carcinogen. Additionally, elevating the discharge helps mitigate the potential for environmental accumulation of radon in the vicinity of the home.

The other options do not meet the established guidelines for effective radon dispersion. Heights lower than 10 feet may not provide adequate dispersion, compromising the effectiveness of the mitigation system.