PART 3Duties of the Scottish Ministers in relation to limit values etc.
Duties in relation to long-term objectives for ozone20
1
The Scottish Ministers must ensure that all necessary measures not entailing disproportionate costs are taken to attain the long-term objectives for ozone set out in Schedule 4.
2
Measures taken pursuant to paragraph (1) must be consistent with the programme referred to in regulation 18(5) and any air quality plan prepared and implemented in accordance with regulation 24(3).
3
In zones where the long-term objectives for ozone have been attained, the Scottish Ministers must, insofar as factors including meteorological conditions and the transboundary nature of ozone pollution permit—
a
ensure that they continue to be met;
b
maintain the best ambient air quality compatible with sustainable development; and
c
maintain a high level of protection for the environment and human health.