A site will be considered acceptable for unrestricted use if the residual radioactivity that is distinguishable from background radiation results in a total effective dose equivalent (TEDE) to an average member of the critical group that does not exceed 0.25 mSv (25 mrem) per year, including that from groundwater sources of drinking water, and the residual radioactivity has been reduced to levels that are as low as reasonably achievable (ALARA). Determination of the levels which are as low as reasonably achievable (ALARA) must take into account consideration of any detriments expected to potentially result from decontamination and waste disposal.
180 Neb. Admin. Code, ch. 4, § 016