Radon is an odorless, tasteless, colorless radioactive gas that naturally occurs as a result of the breakdown of uranium in the soil. When the air pressure in a house or building is lower than that of the soil beneath the structure, radon gas will enter through structural openings and cracks, and migrate through the slab. The standard for corrective action established by the USEPA is 4 pico Curies per liter (pCi/L). When radon gas decays, it produces radioactive decay products. The decay products are heavy metals polonium, bismuth, and lead. When they decay, wave length and particle radiation are produced resulting in lung tissue damage and possibly lung cancer.
