||Radon Reduction in Crawl Space Houses.
Osborne, M. C. ;
Moore, D. G. ;
Southerlan, R. E. ;
Brennan, T. ;
Pyle, B. E. ;
||Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab. ;Energy Systems, Inc., Cookville, TN. ;Camroden Associates, Rome, NY. ;Southern Research Inst., Birmingham, AL.
Air pollution control ;
Polymeric films ;
Indoor air pollution ;
||Some EPA libraries have a fiche copy filed under the call number shown.
The paper gives results of an EPA study of radon mitigation alternatives for crawl space houses in several houses in Nashville, TN. Application of one of these alternative mitigation options, suction under a polyethylene membrane, has been successful in significantly reducing radon levels in both the crawl space and the house. The large radon concentrations measured under unvented plastic ground covers and the moisture barriers found in many crawl spaces can act as radon-rich reservoirs capable of contaminating a crawl space and house during periods of depressurization. With the exhaust components of the mitigation system in place, radon levels below the plastic decreased by more than 95% under both passive and active suction conditions. Based on the study, the design of a cost-effective subplastic suction passive radon mitigation system for crawl spaces seems promising.