The Air Quality Standards Regulations (Northern Ireland) 2010 No. 188

PART 3 Duties of Northern Ireland departments in relation to limit values etc

Duty in relation to long-term objectives for ozone

21.—(1) Northern Ireland departments shall ensure that all necessary measures not entailing disproportionate cost are taken to attain the long-term objectives for ozone set out in Schedule 4.

(2) In zones where the long-term objectives for ozone have been attained, Northern Ireland departments shall, 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.