Radon Potential Areas

Areas of radon potential within Fairfax County. These are short-term test results from a study conducted by the Fairfax County Health Department during the winters of 1986-87 and 1987-88 found that radon levels above the U.S. Environmental Protection Agency action level of 4 picoCuries per liter of air (pCi/L) can occur anywhere in the areas shown on the map. For more information on radon levels, home testing, and related topics, see the Fairfax County Health Department's radon website. Contact: Fairfax County Department of Information Technology GIS Division Data Accessibility: Publicly Available Update Frequency: Never Last Revision Date: 1/1/2000 Creation Date: 1/1/2000 Feature Dataset Name: USGSMGR.DATA Layer Name: USGSMGR.RADON_POTENTIAL_AREAS