s 1F Radionuclides not of natural terrestrial or cosmic origin in background radioactivity
(1) A substance or article is not radioactive material or radioactive waste where— (a) it is contaminated as a result of a climatic process, or a combination of such processes, by radionuclides which— (i) are not of natural terrestrial or cosmic origin; and (ii) are not present in the substance or article at a concentration that exceeds that found normally in such a substance or article in the United Kingdom; and (b) in the absence of such contamination, the substance or article would not otherwise be radioactive material or radioactive waste under this Act. (2) In this section, a “climatic process” includes wind, precipitation and the general circulation of the atmosphere and oceans.