The best threat of radon exposure develops in structures that are impermeable, insufficiently ventilated, and have foundation leaks that enable air from the dirt right into cellars and also home areas. WHO presented in 2009 a recommended r…

EPA life time security requirements for health hazards are established based upon a 1 in 100,000 threat of fatality. Most researchers agree that the risk of fatality for radon at 4 p Ci/L is roughly 1 in 100. At the 4 p Ci/L EPA radon acti…