When uranium breaks down underground, it releases radon. The buildings we’re in have a lower air pressure than the soil around them and act like a vacuum, sucking that radon in through every little crack.
A carefully designed radon reduction system uses a suction point at the lowest point in the building connected to piping and a fan to actively draw this gas from below the building, discharging it above the roofline.
Once above the roofline, the radon is exhausted into open air and the concentration drops hugely.
Breathe easy. We’ve done this before.