Section 1.

SCHEDULE 1 Specified elements

Element	Becquerels per gram (Bq g−1)
	Solid	Liquid	Gas or Vapour
1. Actinium	0.37	7.40 × 10−2	2.59 × 10−6
2. Lead	0.74	3.70 × 10−3	1.11 × 10−4
3. Polonium	0.37	2.59 × 10−2	2.22 × 10−4
4. Protoactinium	0.37	3.33 × 10−2	1.11 × 10−6
5. Radium	0.37	3.70 × 10−4	3.70 × 10−5
6. Radon	—	—	3.70 × 10−2
7. Thorium	2.59	3.70 × 10−2	2.22 × 10−5
8. Uranium	11.1	0.74	7.40 × 10−5