# 35 Ill. Adm. Code 203.1040: Section 203.1040 Actual Emissions

> Illinois · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1040

## Section

- **Citation:** 35 Ill. Adm. Code 203.1040
- **Heading:** Section 203.1040 Actual Emissions
- **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 203.1040 Actual Emissions

## Text

Section 203.1040  Actual Emissions
a)         "Actual
Emissions" means the actual rate of emissions of a regulated NSR pollutant
from an emissions unit as determined in compliance with subsections (b) through
(c), except that this definition shall not apply for calculating whether a
significant emissions increase has occurred, or for establishing a PAL under
Subpart Q. Instead, Section 203.1070 and Section 203.1320 shall apply for those
purposes.
b)         In
general, actual emissions as of a particular date shall equal the average rate,
in tons per year, at which the unit actually emitted the pollutant during a
consecutive 24-month period which precedes the particular date and which is
representative of normal source operation. The Agency shall allow the use of a
different time period upon a demonstration by the applicant to the Agency that
the time period is more representative of normal source operation. Such demonstration
may include, but need not be limited to, operating records or other
documentation of events or circumstances indicating that the preceding 24-month
period is not representative of normal source operations. Actual emissions shall
be calculated using the unit's actual operating hours, production rates, and
types of materials processed, stored or combusted during the selected time
period.
c)         For any emissions unit which has not begun
normal operations on the particular date, actual emissions shall equal the
potential to emit of the unit on that date.

## Nearby sections

- [35 Ill. Adm. Code 203.1000 Section 203.1000  Incorporations by Reference](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1000.md)
- [35 Ill. Adm. Code 203.1010 Section 203.1010  Abbreviations and Acronyms](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1010.md)
- [35 Ill. Adm. Code 203.1020 Section 203.1020  Severability](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1020.md)
- [35 Ill. Adm. Code 203.1030 Section 203.1030  Definitions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1030.md)
- [35 Ill. Adm. Code 203.1040 Section 203.1040  Actual Emissions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1040.md)
- [35 Ill. Adm. Code 203.1050 Section 203.1050  Allowable Emissions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1050.md)
- [35 Ill. Adm. Code 203.1060 Section 203.1060  Available Growth Margin](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1060.md)
- [35 Ill. Adm. Code 203.1070 Section 203.1070  Baseline Actual Emissions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1070.md)
- [35 Ill. Adm. Code 203.1080 Section 203.1080  Begin Actual Construction](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1080.md)
- [35 Ill. Adm. Code 203.1090 Section 203.1090  Building, Structure, Facility, or Installation](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1090.md)
- [35 Ill. Adm. Code 203.1100 Section 203.1100  Commence](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1100.md)
- [35 Ill. Adm. Code 203.1110 Section 203.1110  Complete](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1110.md)
- [35 Ill. Adm. Code 203.1120 Section 203.1120  Construction](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1120.md)
- [35 Ill. Adm. Code 203.1130 Section 203.1130  Dispersion Technique](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1130.md)

---

Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P203_S203_1040. Check the current official text before relying on it. Not legal advice.