Governing Law and Regulations
Arkansas Department of Environmental Quality (ADEQ) Air Division
U.S. Environmental Protection Agency (EPA) Region 6
See ADDRESSES & CONTACTS for addresses and telephone numbers.
See national section for basic information and federal regulations.
Comparison: State vs. Federal
• Rules. Arkansas has not established any state regulations for hazardous air pollutants (HAPs), nor has the state identified any substances as state-listed HAPs. Arkansas administers certain delegated federal NESHAPs, including the NESHAPs for source categories, also known as maximum achievable control technology (MACT) standards. The source categories delegated to ADEQ include only those applicable to major sources of hazardous air pollutants (HAPs). ADEQ has not requested delegation of any NESHAPs applicable to area sources. Refer to the national section HAZARDOUS AIR POLLUTANTS for more information.
• Administration and enforcement. ADEQ's Air Division administers and enforces the delegated HAPs rules in Arkansas. EPA maintains the administration and enforcement responsibilities for the MACT standards not delegated to ADEQ.