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Abstract
Short-term measurements of 222Rn concentrations using diffusion barrier charcoal canisters were made in living areas at the request of volunteer households in Tennessee, Kentucky, Georgia, and Florida from 1986 through 1989. We analyzed the observed radon concentrations in regional sub-areas within these states. After adjusting for oversampling that had occurred in some areas, we estimated state-wide geometric means of radon concentrations in living rooms as 59.7 Bq m −3 in Kentucky, 51.9 Bq m −3 in Tennessee, and 60.0 Bq m −3 in Georgia. Measurements in Florida were scattered over the state and the coverage was inadequate to allow a state-wide estimate. Estimates of the percentage of homes having indoor radon levels equal to or above the action level of 148 Bq m −3 are 21.6% in Kentucky, 17.0% in Tennessee, and 6.8% in Georgia, respectively.
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