Utah Mobile Sources regulations & environmental compliance analysis

Utah Mobile Sources: What you need to know

Governing Law and Regulations

Gasoline vehicle inspection and maintenance (I/M) program: Utah Administrative Rules (R) 307-110-31 to R307-110-36

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Diesel vehicle inspection and maintenance program: R307-110-29

Automobile emissions standards: R307-201-4

Employer trip reduction (ETR) requirements: R307-320

Applicability: R307-320-2 and R307-320-7

Employer requirements: R307-320-4

Recordkeeping: R307-320-5

Exemptions: R307-320-7


Oxygenated gasoline program: R307-301

Clean alternative fuels: R 305-4, R307-121, and R307-123

Regulatory Agency

Utah Department of Environmental Quality (DEQ) Division of Air Quality

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 are implemented at the federal level and are having a positive effect on air quality in Utah. In addition, the state has implemented vehicle inspection and maintenance (I/M) program, employer trip reduction (ETR), and oxygenated gasoline programs in selected counties where such programs are necessary to attain and maintain the National Ambient Air Quality Standards.

Administration and enforcement. DEQ's Division of Air Quality administers and enforces the mobile source programs in Utah.

State Requirements


Gasoline Vehicles

R307-110-31 to 307-110-36

Emissions controls required by the state and federal government are designed to reduce emissions from motor vehicles. However, the effectiveness of the controls is substantially reduced through deterioration, maladjustment, and tampering. Therefore, the motor vehicle emissions inspection program serves to identify high polluting ...

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More on this topic:

Governing Law and Regulations
Regulatory Agency
Comparison: State vs. Federal
State Requirements