2Air quality targets: particulate matter
(1)The Welsh Ministers must by regulations set at least one target (a “PM2.5 air quality target”) in respect of the annual mean level of PM2.5 in ambient air in Wales.
(2)A PM2.5 air quality target may be a long-term target but need not be so.
(3)In this section, PM2.5 means particulate matter with an aerodynamic diameter not exceeding 2.5 micrometres.
(4)The Welsh Ministers must ensure that “ambient air” is defined for the purposes of each PM2.5 air quality target (and regulations under this section may make different provision for different targets for the purposes of this subsection).
(5)Section 1(3) to(4) and (6) to (8) applies to PM2.5 air quality targets and to regulations under this section as it applies to targets set under section 1 and to regulations under that section.
(6)In this Chapter, a “PM2.5 air quality target” means a target set under this section.