Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Indoor Radon Reduction in Crawl-Space Houses: A Review of Alternative Approaches.
Author Henschel, D. B. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab.
Publisher c1992
Year Published 1992
Report Number EPA/600/J-93/078;
Stock Number PB93-173177
Additional Subjects Radon ; Indoor air pollution ; Houses ; Air pollution control ; Alternatives ; Reviews ; State of the art ; Design criteria ; Performance evaluation ; Mitigation ; Installation ; Comparison ; Reprints ; Submembrane depressurization systems ; Crawlspace submembrane depressurization systems ; Active soil depressurization systems
Library Call Number Additional Info Location Last
NTIS  PB93-173177 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 08/23/1993
Collation 18p
The paper discusses the state of the art of alternative technologies for reducing radon concentrations in the living areas of houses with crawl-space foundations. For the two most promising technologies-sub-membrane depressurization (SMD) and crawl-space depressurization-the effects of individual house design, house operation, system design, system operation, and geological variables on system performance have been evaluated. SMD is consistently the most effective technique. Evaluation of the effects of the various house and mitigation system variables indicates that the major data gaps are: (1) the conditions under which crawl-space depressurization might be preferred over SMD; (2) the optimal method for distributing suction beneath a SMD membrane under different conditions; (3) the optimal degree of SMD membrane sealing required under different conditions; (4) the conditions under which it may be possible to leave a portion of the crawl-space uncovered; and (5) the durability of SMD the other systems.