Illinois Hazardous Air Pollutants regulations & environmental compliance analysis

Illinois Hazardous Air Pollutants: What you need to know

Governing Law and Regulations

National emissions standards for hazardous air pollutants (NESHAP): 40 CFR 61, 40 CFR 63, 415 Illinois Compiled Statutes (ILCS) 5/9.1

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Illinois toxic air contaminants (TACs): 35 Illinois Administrative Code (IAC) 232 and 415 ILCS 5/9.5

TAC list: 35 IAC 232.100 to 232.320, 35 IAC 232.500, 35 IAC 232.501, and 35 IAC 232 Appendix A

Reporting requirements: 35 IAC 232.400 to 232.460


Fossil fuel combustion: 35 IAC 225.200 to 225.295

Regulatory Agency

Illinois Environmental Protection Agency (IEPA) Bureau of Air Division of Air Pollution Control

See ADDRESSES & CONTACTS for addresses and telephone numbers.

See national section for basic information and federal regulations.

Comparison: State vs. Federal

Rules. The federal regulations regarding NESHAPS, including source-specific NESHAPs known as maximum control technology (MACT) standards, are effective in Illinois and the federally listed hazardous air pollutants (HAPs) are included in the state-regulated list of TACs. Additional state-listed pollutants include those from the Great Waters and Coastal Waters Program in Section 112(m) of the Clean Air Act and pollutants listed by the Great Lakes Commission. In addition, Illinois is taking action on the state level to limit the release of mercury into the environment.

Administration and enforcement. The Division of Air Pollution Control in IEPA's Bureau of Air administers and enforces the regulations governing HAPs and the state TAC regulations, including mercury emissions from the combustion of fossil fuel.

State Requirements


TAC List

35 IAC 232.100 to 232.320, 35 IAC 232.500, 35 IAC 232.501, and 35 IAC 232 Appendix A

Illinois defines a "TAC" as a contaminant ...

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