Indiana Fugitive Emissions: What you need to know

Governing Law and Regulations

New source performance standards (NSPS): 40 CFR 60 and 326 Indiana Administrative Code (IAC) 12-1-1

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National Emission Standards for Hazardous Air Pollutants (NESHAP): 40 CFR 61, 40 CFR 63, 326 IAC 14-7-1, 326 IAC 14-8-1, and 326 IAC 20-12-1

Fugitive dust emissions: 326 IAC 6-4-1 to 6-4-7 and 326 IAC 6-5-1 to 6-5-9

Exceptions: 326 IAC 6-4-6

Control plans: 326 IAC 6-5-1, 326 IAC 6-5-3, and 326 IAC 6-5-5

Control Measures: 326 IAC 6-5-4

Visible emissions: 326 IAC 5-1-1 to 5-1-7

Regulatory Agency

Indiana Department of Environmental Management (IDEM) Office of Air Quality (OAQ)

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. Indiana has adopted by reference the federal NSPS and the NESHAPs, which contain source-specific standards for the control of fugitive emissions. In addition, IDEM has developed its own regulations for the control of fugitive particulate emissions and visible emissions.

Administration and enforcement. IDEM's OAQ is responsible for the administration and enforcement of the state's fugitive air emissions rules.

State Requirements


326 IAC 6-4-2 and 326 IAC 6-4-4

No source in the state of Indiana is allowed to emit fugitive dust that results in one of the following situations:

  • Fugitive dust concentrations greater than 67 percent above the upwind ambient concentrations, as determined by the equation in 326 IAC 6-4-2(1). However, if the fugitive dust is composed of 50 percent or greater respirable dust (between 0.5 and 6.0 microns), then the allowable concentration above the upwind ambient concentration must not be greater than the value ...

>> Read more about Fugitive Emissions

State Requirements

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Indiana Fugitive Emissions Resources

Fugitive Emissions Products

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