Record Display for the EPA National Library Catalog


Main Title Natural Basement Ventilation as a Radon Mitigation Technique.
Author Cavallo, A. ; Gadsby, K. ; Reddy., T. A. ;
CORP Author Princeton Univ., NJ. Center for Energy and Environmental Studies.;Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher Apr 92
Year Published 1992
Report Number EPA/600/R-92/059;
Stock Number PB92-166958
Additional Subjects Radon ; Residential buildings ; Basements ; Ventilation ; Air pollution control ; Indoor air pollution ; Stationary sources ; Feasibility ; Natural ventilation
Library Call Number Additional Info Location Last
NTIS  PB92-166958 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 44p
The report documents a study of natural basement ventilation in two research houses during both the summer cooling season and the winter heating season. (NOTE: Natural basement ventilation has always been recommended as a way to reduce radon levels in houses. However, its efficacy has never been documented. It has generally been assumed to be a very inefficient mitigation strategy since it was believed that dilution was the mechanism by which radon levels were reduced.) Ventilation rates, environmental and house operating parameters, and radon levels have been monitored; it can be concluded that natural ventilation can reduce radon levels two ways: (1) by simple dilution, and (2) although less obvious, by providing a pressure break that reduces basement depressurization and thus the amount of radon-contaminated soil gas drawn into the house. Thus, basement ventilation can be a much more effective mitigation strategy than was previously believed. It might be especially useful in houses with low radon concentrations (of the order of 10 pCi/L) or those with low levels that cannot be mitigated cost-effectively with conventional technology.