radon in basement

https://easypdfshare.com/s/QYZLESxbxCJh3IttmMoRf

Radon in the basement is a silent concern because you can't see or smell it. This radioactive gas seeps up from the soil through foundation cracks and can build up to dangerous levels, especially in lower levels where air might not circulate well. The only way to know if it's there is to test for it, and if levels are high, mitigation like sealing gaps or installing a ventilation system can make the air safer to breathe.