The legislative authority of any county may activate an air pollution control authority following a public hearing on its own motion, or upon a filing of a petition signed by one hundred property owners within the county. If the county legislative authority determines as a result of the public hearing that:
(1) Air pollution exists or is likely to occur; and
(2) The city or town ordinances, or county resolutions, or their enforcement, are inadequate to prevent or control air pollution,
it may by resolution activate an air pollution control authority or combine with a contiguous county or counties to form a multicounty air pollution control authority.