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ACTIVE SOIL DEPRESSURIZATION (ASD) DEMONSTRATION IN A LARGE BUILDING
Citation:
Williamson, A., B. Pyle, S. McDonough, AND C. Fowler. ACTIVE SOIL DEPRESSURIZATION (ASD) DEMONSTRATION IN A LARGE BUILDING. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/R-96/147 (NTIS PB97-133805), 1996.
Impact/Purpose:
information
Description:
The report gives results of an evaluation of the feasibility of implementing radon resistant construction techniques -- especially active soil depressurization (ASD) -- in new large buildings in Florida. Indoor radon concentrations and radon entry were monitored in a finished building with the heating, ventilation, and air-conditioning (HVAC) system on and the ASD system off, and with the ASD systems activated in a temporary mode. Results from the study have demonstrated that, with sufficient attention to building design and construction, significant radon entry into a large building constructed on a site of high radon potential can be prevented. The effectiveness of the ASD system as a radon mitigation technique could not be realistically evaluated due to a lack of radon in the building. However, pressure field extension measurements suggest that the design is more than adequate to meet its purpose of pressure reversal between the building interior and the subslab regions.