Radon Map Zone
Radon Map Legend
Zone 1 - Highest
Potential
Counties that have a predicted average indoor radon screening level greater than 4 pCi/L (pico curies per liter) (red zones)
Zone 2 -
Moderate Potential
Counties that have a predicted average indoor radon screening level between 2 and 4 pCi/L (orange zones).
Zone 3 -
Low Potential
Counties that have a predicted average indoor radon screening level less than 2 pCi/L (yellow zones)
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