radon test results 2

https://radoncollinsvilleinsider.halcyonledger.com/posts/understanding-radon-collinsville-homeowners-should-know-about-testing-and-mitigation

Our radon test results came back at 4.2 pCi/L, which is just above the EPA's action level of 4.0. That means we need to install a mitigation system soon to reduce our risk of lung cancer from prolonged exposure.