Ariz. Rev. Stat. § 49-402
A. The department shall have original jurisdiction over such sources, permits and violations that pertain to:
E. The regional planning agency for each county which contains a vehicle emissions control area shall develop plan revisions containing transportation related air quality control measures designed to attain and maintain primary and secondary ambient air quality standards as prescribed by and within the time frames specified in the clean air act. In developing the plan revisions, the regional planning agency shall consider all of the following: