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State
CGS Mineral Hazards: Indoor Radon Potential Zones
State of California —
This digital layer contains polygons (vector format) of portions of California designated as having high, moderate, low, or unknown potential for homes to exceed the... -
County
Radon Potential Areas
Fairfax County, Virginia —
Areas of radon potential within Fairfax County. These areas were developed by short-term test results from a study conducted by the Fairfax County Health Department... -
State
CGS Mineral Hazards: Indoor Radon Potential Study Areas
State of California —
Study area boundaries for indoor radon potential conducted by the California Geological Survey.