Governing Law and Regulations
Arizona Department of Environmental Quality (ADEQ) Air Quality Division
Arizona Department of Transportation Motor Vehicle Division (MVD)
Maricopa County Environmental Services Department Air Quality Division
Pima County Air Quality Control District
Pinal County Air Quality Control District
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. There are many mobile source regulatory requirements implemented nationally by the U.S. Environmental Protection Agency (EPA) that impact mobile sources in Arizona.
In addition, the state and local air pollution control agencies have established additional programs to implement optional federal programs and other requirements to control mobile source emissions and make progress toward attainment of all the national ambient air quality standards.
• Administration and enforcement. ADEQ's Air Quality Division works in conjunction with MVD to administer and enforce the vehicle I/M program. The local air pollution control agencies implement and enforce idling and ...