May 1996
This final report presents and discusses the performance of passive radon-resistant construction in homes with ventilated crawl spaces, including the test results of 17 crawl space homes constructed by seven builders in six states. The Research Center recruited builders of crawl space homes from several areas of the continental United States, particularly in counties and cities designated as Zone 1 according to the EPA Map of Radon Zones. Researchers educated builders on radon-resistant construction methods, and periodically observed their operations to record the degree to which they complied with EPA recommendations.
Prepared for:
United States Environmental Protection Agency
48 pages