Assessment of Radioactive Discharges in Ground Water to the Unrestricted Area at Nuclear Power Plant Sites

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The U.S. Nuclear Regulatory Commission (NRC) is issuing for public comment draft regulatory guide (DG), DG-4025, "Assessment of Radioactive Discharges in Ground Water to the Unrestricted Area at Nuclear Power Plant Sites." This DG proposes guidance for an approach that the NRC staff considers acceptable for use in assessing abnormal, inadvertent radioactive releases that may result in discharges of contaminated ground water from the subsurface to the unrestricted area at commercial nuclear power plant sites.