Unrestricted use
means that, “from a radiological standpoint, no hazards exist at the site, the license can be terminated, and the site can be considered an unrestricted area.” Final Rule, General Requirements for Decommissioning Nuclear Facilities, 53 Fed. Reg. 24,018, 24,020 (June 27, 1988). In practical terms, “the objective of decommissioning is to reduce residual radioactivity in structures, soils, groundwater, and other media at the site so that the concentration of each radionuclide that could contribute to residual radioactivity is indistinguishable from the background radiation concentration for that nuclide.” Final Rule, Radiological Criteria for License Termination, 62 Fed. Reg. 39,058, 39,059 (July 21, 1997). See
