Paragraph 10 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.
(2)
In this paragraph, a “climatic process” includes wind, precipitation and the general circulation of the atmosphere and oceans.