Florida law requires that the Seller disclose to a potential Buyer all of the facts of all defects in the property that are known to the Seller, that will materially affect the property’s value. Section (a) contains the radon gas disclosure. Radon is a natural occurring radioactive gas that can potentially be a health risk to people who are exposed to it when it has accumulated in a building in large enough quantities over time. Radon levels must not exceed the quantities found in the federal and state guidelines. Information on testing for radon gas can be found at your community health department.