Where a local authority in the area of a combined county authority intends to prepare an action plan it must notify the combined county authority.
Where a combined county authority has been given a notification under subsection (1) by a local authority, the combined county authority must, before the end of the relevant period, provide the local authority with proposals for particular measures the combined county authority will take to contribute to the achievement, and maintenance, of air quality standards and objectives in the area to which the plan relates.
Where a combined county authority provides proposals under subsection (2), the combined county authority must—
An action plan prepared by a local authority in the area of a combined county authority must set out any proposals provided to it under subsection (2) (including the dates specified by virtue of subsection (3)(a)).
In this section "combined county authority" means a combined county authority established under section 9(1) of the Levelling-up and Regeneration Act 2023.