Abstract
Surveys of radon and short-lived daughters concentration levels have been performed in soil and groundwater around the Laguna Verde, Mexico, nuclear power facility. The soil monitoring was carried out at the power plant site, at a nearby aquifer, and at three localities where local seismic activity of low intensity occur. Groundwater samplings were performed at already existing wells. Solid State Nuclear Track Detectors (SSNTD) were used for radon in soil and groundwater determinations, while 214Pb and 214 Bi activities in soil and groundwater samples were obtained from the routine gamma spectrometry studies included in the Radiological Environmental Program of the plant. The results showed seasonal variations in the radon and daughters concentration levels, both in groundwater and in soil. The higher soil radon and daughters values are found at a nearby geologic fault. The radon potential of the zone can be considered low risk.
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