


|
|
Zone1 counties have a predicted average indoor radon screening level greater than 4 pCi/L (pico Curies per liter) (red zones)
|
Highest Potential
|
|
|
Zone 2 counties have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones)
|
Moderate
|
|
|
Zone 3 counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)
|
Low Potential
|


