title: A two-year study of seasonal indoor radon variations in southern Maryland.
abstract: The concentrations of indoor radon in the basements of homes located in southern Maryland average about 1.3 times the first floor radon concentrations. Particular geological units tend to be associated with higher indoor radon. In the study area, homes underlain by phyllite were mostly above 4 pCi/liter (the US Environmental Protection Agency 'action level'). Comparative studies between indoor radon and total-gamma aeroradioactivity show that aeroradioactivity can be accurately used to estimate community radon hazards. When combined, geology and aero radioactivity can be used to identify problem homes.
authors.affiliation: Center for Basic and Applied Science, George Mason University, Fairfax, Virginia 22030, USA.
authors.forename: D G
authors.initials: DG
authors.lastname: Mose
authors.forename: G W
authors.initials: GW
authors.lastname: Mushrush
authors.forename: C E
authors.initials: CE
authors.lastname: Chrosniak