- a) 40 CFR Part 51, Subpart I (2021)
- b) 40 CFR 52.21 (2021)
- c) 40 CFR Part 51, Appendix S (2021)
- d) 40 CFR Part 51, Appendix W (2021)
- e) 40 CFR Part 60 (2021)
- f) 40 CFR Part 61 (2021)
- g) 40 CFR Part 62 (2021)
- h) 40 CFR Part 63 (2021)
- i) 40 CFR Part 81 (2021)
- j) Standard Industrial Classification Manual, 1972, as amended by the 1977 Supplement (U.S. Government Printing Office stock numbers 4101-0066 and 003-005-00176-0, respectively).
The following materials are incorporated by reference. These incorporations by reference do not include any later amendments or editions.
(Source: Added at 49 Ill. Reg. 6237, effective April 23, 2025)