Arkansas Mobile Sources regulations & environmental compliance analysis

Arkansas Mobile Sources: What you need to know

Governing Law and Regulations

Automobile emissions standards:

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Antitampering requirements: Arkansas Regulation (AR Reg.) 18.701(A)

Visible emissions requirements: AR Reg. 18.701(B)

Exemptions: AR Reg. 18.701(D)

Employer trip reduction and commuting: 42 USC 7511a(d)(1)(B)

Nonroad engine standards:

Locomotives: AR Reg. 18.701(C)

Regulatory Agencies

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. Many mobile source regulatory programs implemented at the federal level are having a positive effect on air quality in Arkansas. ADEQ has established regulations prohibiting tampering with emissions control devices on vehicles and regulations addressing visible emissions from vehicles and locomotives.

Administration and enforcement. DEQ administers and enforces the antitampering and visible emissions requirements. EPA administers and enforces other mobile source programs at the federal level.

State Requirements


Antitampering Requirements

AR Reg. 18.701(A)

The owner or operator of a motor vehicle that incorporates a system for the control or emissions from the crankcase or exhaust system, or for the control or evaporative emissions, must maintain the system in good operable condition and must use it at all times that the vehicle is operated. The operator of such vehicle must not intentionally make the system inoperable or remove it, except to install a proper replacement.

Visible Emissions Requirements

AR Reg. 18.701(B)

No person may cause or permit the emissions of ...

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Arkansas Mobile Sources Resources

Type Title
Forms Stage II System Decommissioning Notification Form
See all Mobile Sources Resources