What is the recommended height for the discharge point of an active soil depressurization system?

The recommended height for the discharge point of an active soil depressurization system is not less than 10 feet above grade. This height is important for several reasons.

First, it ensures that the radon gas, which is being vented from the system, disperses adequately into the atmosphere before it can settle back down near the structure or any surrounding areas. By discharging the gas at a height of at least 10 feet, there is a greater likelihood that the radon will be diluted in the open air, reducing the risk of exposure to occupants in and around the home.

Additionally, this height consideration helps to mitigate potential health risks associated with radon since it is a known carcinogen. It minimizes the chance of the gas re-entering the building or affecting outdoor activities in nearby areas.

While the specific height recommendation may vary based on local codes, the requirement of at least 10 feet has been shown to be effective in practical applications. Discharge points set too low may not provide sufficient ventilation, leading to inefficient removal of radon from the affected soil, which ultimately compromises the effectiveness of the mitigation system.