Regulation 4(1): amended, on 5 December 2011, by section 53(2) of the Environmental Protection Authority Act 2011 (2011 No 14).
Regulation 4(2)(b)(ii): amended, on 1 January 2011, by regulation 5(1) of the Climate Change (Unique Emissions Factors) Amendment Regulations 2010 (SR 2010/337).
Regulation 4(2)(b)(iii): added, on 1 January 2011, by regulation 5(2) of the Climate Change (Unique Emissions Factors) Amendment Regulations 2010 (SR 2010/337).
Regulation 4(2)(d)(ii): amended, on 1 January 2011, by regulation 5(3) of the Climate Change (Unique Emissions Factors) Amendment Regulations 2010 (SR 2010/337).
Regulation 4(2)(d)(iii): amended, on 5 December 2011, by section 53(2) of the Environmental Protection Authority Act 2011 (2011 No 14).
Regulation 4(4): amended, on 5 December 2011, by section 53(2) of the Environmental Protection Authority Act 2011 (2011 No 14).