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Feb 20, 2020
12:12:32pm
basman Walk-on
It appears the zones are by county and then by predicted average

indoor screening level radon concentrations:

Zone 1 (Red): Counties with predicted screening levels of radon > 4 pCi/L

Zone 2 (Orange): Counties with predicted screening levels of radon between 2 and 4 pCi/L

and Zone 3 (Yellow): Counties with predicted screening levels of radon < 2 pCi/L.

This message has been modified
Originally posted on Feb 20, 2020 at 12:12:32pm
Message modified by basman on Feb 20, 2020 at 12:15:26pm
basman
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