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  • Title: The use of computed radon entry rates to understand radon concentration in buildings.
    Author: Cavallo A, Gadsby K, Reddy TA.
    Journal: Health Phys; 1994 Feb; 66(2):178-84. PubMed ID: 8282559.
    Abstract:
    The central role played by basement depressurization in drawing radon-contaminated soil gas into a structure has been demonstrated by calculating the radon entry rate from radon concentration and air infiltration measurements at different levels of basement depressurization in a single-family research house. The radon entry rate is found to be a linear function of basement depressurization in this house which indicates that the flow of soil gas into the structure is laminar. The radon entry rates calculated before and after using a mitigation procedure is shown to provide a better measure of the mitigation efficacy than the standard before and after mitigation radon measurements in a research house. In addition, an analysis of the possible flow characteristics of soil gas and uncontaminated air into a basement indicates that any attempt to predict long-term average radon exposure from short-term screening measurements will only be possible under severely restricted conditions.
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