The average indoor radon level is 1.3 picocuries/liter. This firm says they were able to get 3500 picocuries/liter down to 3! Click on image for link.
Very High Radon Levels Can be Mitigated!
Updated: Sep 22, 2019
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Updated: Sep 22, 2019
The average indoor radon level is 1.3 picocuries/liter. This firm says they were able to get 3500 picocuries/liter down to 3! Click on image for link.