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Part of a radon mitigation system including the fan and vent pipe is visible near the gutter downspout. Because high levels of radon have been found in every state of the United States, [18] testing for radon and installing radon mitigation systems has become a specialized industry since the 1980s. Many states have implemented programs that ...
Radon mitigation methods include sealing concrete slab floors, basement foundations, water drainage systems, or by increasing ventilation. [96] They are usually cost effective and can greatly reduce or even eliminate the contamination and the associated health risks. [citation needed]
Radon is condensed by liquid nitrogen and purified from residue gases by sublimation. [97] Radon commercialization is regulated, [citation needed] but it is available in small quantities for the calibration of 222 Rn measurement systems.
Maps of average radon levels in houses are available, to assist in planning mitigation measures. [8] While high uranium in the soil/rock under a house does not always lead to a high radon level in air, a positive correlation between the uranium content of the soil and the radon level in air can be seen.
In a report Tuesday, S&P Global Mobility reckoned that “importers are likely to pass most, if not all, of this (cost) increase to consumers.’’ TD Economics notes that average U.S. car prices ...
In September 2009, the World Health Organization released a comprehensive global initiative on radon that recommended a reference level of 100 Bq/m 3 for radon, urging establishment or strengthening of radon measurement and mitigation programs as well as development building codes requiring radon prevention measures in homes under construction ...