Nevada Administrative Code
Chapter 459 - Hazardous Materials
RADIATION CONTROL
Radiological Criteria for Termination of License
Section 459.3168 - "Residual radioactivity" defined

1. "Residual radioactivity" means the amount of radioactivity detectable in structures, material, soils, groundwater or other media at a site that is attributable to activities under the control of a licensee, including all licensed or unlicensed sources of radiation used by a licensee.

2. The term includes the detectable amount of radioactivity attributable to radioactive materials remaining at the site from routine or accidental releases, or burials, of radioactive materials at the site.

3. The term does not include the detectable amount of radioactivity attributable to background radiation.