EPA Map of Radon Zones

Guam - Preliminary
Zone Designation

mm

r -»»*«.—
LEGEND
Zone 1
Zone 2
Zone 3
The Map of Radon Zones was developed in 1993 to identify areas of the U.S. with the potential for elevated indoor radon levels. The map is intended
to help governments and other organizations target risk reduction activities and resources. The Map of Radon Zones should not be used to determine if
individual homes need to be tested. No matter where you live, test your home for radon—it's easy and inexpensive. Fix your home if your radon level
is 4 picocuries per liter (pCi/L) or higher. Consider fixing if your level is between 2 and 4 pCi/L.
The Map of Radon Zones was developed using data on indoor radon measurements, geology, aerial radioactivity, soil parameters, and foundation types.
EPA recommends that this map be supplemented with any available local data in order to further understand and predict the radon potential for a
specific area.
402-F19-004

-------