# 35 Ill. Adm. Code 203.100: Section 203.100 Effective Dates

> Illinois · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_100

## Section

- **Citation:** 35 Ill. Adm. Code 203.100
- **Heading:** Section 203.100 Effective Dates
- **Jurisdiction:** Illinois
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Illinois Administrative Code / Title 35 ENVIRONMENTAL PROTECTION / CHAPTER I: POLLUTION CONTROL BOARD / Part 203 MAJOR STATIONARY SOURCES CONSTRUCTION AND MODIFICATION / Section 203.100 Effective Dates

## Text

Section 203.100  Effective Dates
a)         Subparts
I through R of this Part do not apply until the effective date of the full approval
of all of those Subparts by the United States Environmental Protection Agency
(USEPA) as a revision to the Illinois State Implementation Plan.
b)
On the effective date of the full approval
of Subparts I through R of this Part by the USEPA as part of Illinois' State
Implementation Plan, the permitting and operation of projects that began actual
construction or may begin actual construction before this date shall continue
to be in compliance with Subparts A through H of this Part.

## Nearby sections

- [35 Ill. Adm. Code 203.100 Section 203.100  Effective Dates](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_100.md)
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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_100. Check the current official text before relying on it. Not legal advice.