Zone | Potential |
---|---|
Zone 1 counties have a predicted average indoor radon screening level greater than 4 pCi/L (picocuries 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 Potential |
Zone 3 counties have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones) |
Low Potential |