Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Indoor (222)Rn in Tennessee Valley Houses: Seasonal, Building, and Geological Factors.
Author Dudney, C. S. ; Hawthorne, A. R. ; Wilson, D. L. ; Gammage, R. B. ;
CORP Author Oak Ridge National Lab., TN. Health and Safety Research Div.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-92/396;
Stock Number PB93-121259
Additional Subjects Radon ; Indoor air pollution ; Houses ; Air pollution monitoring ; Alpha particle detectors ; Summer ; Winter ; Seasonal variations ; Geology ; Air pollution control ; Stationary sources ; Shales ; Reprints ; Roane County(Tennessee) ; Madison County(Alabama)
Library Call Number Additional Info Location Last
NTIS  PB93-121259 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/08/1993
Collation 10p
The article discusses effects of seasonal, building, and geological factors on indoor radon-222 (Rn-222) in 312 occupied Tennessee Valley houses. Two-season surveys of 226 houses in Roane County, TN, were conducted in 1985-86, and of 86 houses in Madison County, AL, in 1988-89. Alpha track detectors were placed in each house for 3 months or more during the winter heating season. Detectors were placed at the same sites during the following cooling season. Comparisons were made between winter and summer sampling times and between building types. For the data from Madison County, additional comparisons were made between regions of the county that differed in geological characteristics, especially the thickness of the overburden above the Chattanooga Shale layer, a geological stratum that has high concentrations of radon-226 and is widely found in the southeastern U.S. The geometric means of summer and winter measurements in Roane County were 33 and 54 Bq/cu m, respectively. For Madison County, the means were 121 and 88 Bq/cu m, respectively. The winter Rn-222 concentrations in Roane County exceeded summer concentrations. In Madison County, the opposite was found; atypically, concentrations were higher in the summer.