s 1GA Historic radium contamination: Northern Ireland
A substance or article is not radioactive material or radioactive waste where the substance or article arises from the remediation of land contaminated by radium and— (a) the substance or article contains Ra-226 or its progeny; (b) in the absence of Ra-226 or its progeny, the substance or article would not otherwise be radioactive material or radioactive waste under this section; (c) the contamination occurred prior to 13 May 2000; and (d) the concentration of Ra-226 and any progeny resulting from the decay of Ra-226 does not exceed the following values— (i) for a substance or article which is a solid or a substance which is relevant a liquid, 1Bq/g; (ii) for a substance which is any other liquid, 1Bq/l; or (iii) for a substance which is a gas, 0.01 Bq/m 3 .