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Radon Facts & Resources by the Radon Lady
- Radon decay products produce alpha particles that are harmful to the tissue in the lungs.
- Radon is the 2nd cause of lung cancer after smoking, killing more people than drunk drivers.
- There are no safe exposure levels to radon. The EPA’s recommendation of 4.0 pCi/L as a trigger for remediation is based on technology and economics, not on safety.
- Buildings with Radon can be fixed – there are many ways of reducing the radon levels inside a building.
- The EPA recommends long-term sampling performed every 2 years after a successful remediation system has been installed.
- For more information:
Short- and Long-Term Testing
Short-Term (3-7 days)
- Gives a “snapshot” of the radon concentrations under “worst case” conditions at the time of the sampling.
- Provides an indication of radon potential. This method is used in real estate transactions and to provide a cursory idea of the radon potential.
- Test performed under normal living conditions.
Long-Term (90-360 days)
- Determines radon levels of the building as used by its occupants.
- Determines average radon levels over longer periods of time under “normal living conditions” for the building with those occupants.
- Test requires “closed house” conditions, where building is closed except for normal entry/exit.
Download a comparison spreadsheet providing more details about both methods.
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