EPA-Approved Illinois Regulations and Statutes
Title 35 of the Illinois Administrative Code
Subtitle B: Air Pollution
Chapter I: Pollution Control Board
Subchapter l: Air Quality Standards and Episodes
Part 243: Air Quality Standards
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Part 243: Air Quality Standards (PDF)(20 pp, 146 K)