Illinois Air - General: What you need to know

Governing Law and Regulations

State implementation plan (SIP): 40 CFR 51 and 40 CFR 52.719 to 52.745

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Attainment status: 40 CFR 81.314

Air permits: 35 Illinois Administrative Code (IAC) 201 to 203 and 35 IAC 270

Hazardous air pollutants (HAPs): 40 CFR 61, 40 CFR 63, 35 IAC 232, and 415 Illinois Compiled Statutes (ILCS) 5/9.1

New Source Performance Standards: 40 CFR 60 and 415 ILCS 5/9.1

Pollutant transport:

Clean Air Interstate Rule (CAIR): 35 IAC 225.300 to 225.640

Cross-State Air Pollution Rule (CSAPR): 40 CFR 97.401 to 97.735

Emissions Reduction Market System (ERMS): 35 IAC 205

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. Illinois's air program is shaped by its state implementation plan (SIP). SIP is a plan detailing the methods by which the state will implement, maintain, and enforce the National Ambient Air Quality Standards (NAAQS). As mandated by the federal Clean Air Act (CAA), each state must adopt and submit SIP to the U.S. Environmental Protection Agency (EPA) for approval.

Administration and enforcement. Illinois's air program is implemented and enforced by the Illinois Environmental Protection Agency's (IEPA) Division of Air Pollution Control.

State Requirements



Illinois officially submitted its SIP to the EPA in January 1972. However, it is constantly being amended in order to comply with the 1990 CAA amendments. After the EPA issues final approval of each amendment to the state's SIP, the IEPA will be fully authorized to enforce that amended portion of ...

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More on this topic:

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

State Requirements

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Illinois Air - General Resources

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