General attainment measures
7.—(1) Subject to paragraphs (2) and (3), the National Assembly must take the necessary measures to ensure that, within each zone, concentrations of each pollutant attain the air quality standards required by regulation 6.
(2) The necessary measures in relation to Group B pollutants are—
(a)measures not entailing disproportionate costs; and
(b)insofar as concentrations of the relevant pollutants arise as a result of emissions from installations to which Council Directive 96/61/EC concerning integrated pollution prevention and control(1) applies, the application of best available techniques to prevent pollution from those installations in accordance with article 3(a) of that Directive(2).
(3) The necessary measures in relation to ozone are measures the National Assembly considers to be—
(a)in the case of both the target values and long-term objectives, proportionate; and
(b)in the case of a long-term objectives, cost-effective.
OJ No L 257, 10.10.96, p.26.
The Directive is implemented by the Pollution Prevention and Control (England and Wales) Regulations 2000 (S.I. 2000/1973 as amended by S.I. 2001/503, 2002/275, 2002/1702, 2003/1699, 2003/3296, 2004/3276, 2005/1448 and 2006/2802 (W.241)).