As part of an exploratory study, three houses were monitored for moisture indicators, radon levels, building operations and other environmental parameters while ASD systems were cycled on and off. December 6, 2007, Revised March 10, 2008.
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Exploratory Study of Basement Moisture During Operation of ASD Radon Control Systems (PDF)(144 pp, 1 MB, EPA 402/R-07/017)