Illinois Administrative Code

Section 203.2290 Small Emissions Unit "Small emissions unit" means an emissions unit that emits or has the potential to emit the PAL pollutant in an amount less than the significant level for that PAL pollutant, as defined in Section 203.1370 or in the CAA, whichever is lower. (S…

Section 203.2300 Permit Application Requirements As part of a permit application requesting a PAL, the owner or operator of a major stationary source shall submit the following information to the Agency for approval: a) A list of all emissions units at the source designated as sm…

Section 203.2310 General Requirements for Establishing PAL a) The Agency is allowed to establish a PAL at a major stationary source provided that, at a minimum, the requirements of this Section are met. 1) The PAL shall impose an annual emission limitation expressed on a mass bas…

Section 203.2320 Public Participation Requirements PALs for existing major stationary sources shall be established, renewed, or increased through a procedure that is consistent with 35 Ill. Adm. Code 252. This includes the requirement that the Agency provide the public with notic…

Section 203.2330 Setting the 10-Year Actuals PAL Level a) Except as provided in subsection (b), the actuals PAL level for a major stationary source shall be established as the sum of the baseline actual emissions (as defined in Section 203.1070) of the PAL pollutant for each emis…

Section 203.2340 Contents of the PAL Permit The PAL permit shall contain, at a minimum: a) The PAL pollutant and the applicable source-wide emission limitation in tons per year. b) The PAL permit effective date and the expiration date of the PAL (PAL effective period). c) Specifi…

Section 203.2350 Effective Period and Reopening a PAL Permit The requirements in subsections (a) and (b) apply to actuals PALs. a) PAL effective period. The Agency shall specify a PAL effective period of 10 years. b) Reopening of the PAL permit. 1) During the PAL effective period…

Section 203.2360 Expiration of a PAL Any PAL that is not renewed in accordance with the procedures in Section 203.2370 shall expire at the end of the PAL effective period, and the requirements in this Section shall apply. a) Each emissions unit (or each group of emissions units) …

Section 203.2370 Renewal of a PAL a) The Agency shall follow the procedures specified in Section 203.2320 in approving any request to renew a PAL for a major stationary source, and shall provide both the proposed PAL level and a written rationale for the proposed PAL level to the…

Section 203.2380 Increasing the PAL During the PAL Effective Period a) The Agency may increase a PAL emission limitation only if the major stationary source complies with the provisions in subsections (a)(1) through (4). 1) The owner or operator of the major stationary source sha…

Section 203.2390 Monitoring Requirements a) General requirements. 1) Each PAL permit must contain enforceable requirements for the monitoring system that accurately determines plantwide emissions of the PAL pollutant in terms of mass per unit of time. Any monitoring system author…

Section 203.2400 Recordkeeping Requirements a) The PAL permit shall require an owner or operator to retain a copy of all records necessary to determine compliance with any requirement of this Subpart and of the PAL, including a determination of each emissions unit's 12-month roll…

Section 203.2410 Reporting and Notification Requirements The owner or operator shall submit semi-annual monitoring reports and prompt deviation reports to the Agency in accordance with the CAAPP. The reports shall meet the requirements in subsections (a) through (c). a) Semi-annu…

Section 203.2420 Transition Requirements The Agency may not issue a PAL that does not comply with the requirements in this Subpart. (Source: Added at 49 Ill. Reg. 6237, effective April 23, 2025) SUBPART R: REQUIREMENTS FOR MAJOR STATIONARY SOURCES IN ATTAINMENT AND UNCLASSIFIABLE…

Section 203.2500 Applicability a) In any area designated as attainment or unclassifiable under sections 107(d)(l)(A)(ii) or (iii) of the CAA (42 U.S.C. 7407(d)(l)(A)(ii) or (iii)), no person shall begin actual construction of a new major stationary source or major modification if…

Section 203.2510 Criteria For this Subpart, the emissions from a new major stationary source or major modification will be considered to cause or contribute to a violation of a NAAQS if such source or modification would exceed the following significance levels at any locality tha…

Section 203.2520 Requirements If the owner or operator of the proposed major stationary source or major modification does not fulfill the requirements of both subsections (a) and (b), the Agency shall deny the proposed construction. a) The owner or operator shall reduce the impac…

Section 203.2530 Construction Permit a) The Agency shall only issue a construction permit for a new major stationary source or a major modification that is subject to the requirements of this Subpart if the Agency determines that the source meets all applicable requirements of th…

Section 203.301 Lowest Achievable Emission Rate a) For any source, lowest achievable emission rate (LAER) will be the more stringent rate of emissions based on the following: 1) The most stringent emission limitation which is contained in the implementation plan of any state for …

Section 203.302 Maintenance of Reasonable Further Progress and Emission Offsets a) The owner or operator of a new major source or major modification shall provide emission offsets equal to or greater than the allowable emissions from the source or the net increase in emissions fr…

Section 203.303 Baseline and Emission Offsets Determination a) An emission offset must be obtained from a source in operation prior to the permit application for the new or modified source. Emission offsets must be effective prior to start-up of the new or modified source. b) The…

Section 203.304 Exemptions from Emissions Offset Requirement (Repealed) (Source: Repealed at 12 Ill. Reg. 6118, effective March 22, 1988)

Section 203.305 Compliance by Existing Sources The owner or operator shall demonstrate that all major stationary sources which he or she owns or operates (or which are owned or operated by any entity controlling or controlled by, or under common control, with the owner or operato…

Section 203.306 Analysis of Alternatives The owner or operator shall demonstrate that benefits of the new major source or major modification significantly outweigh the environmental and social costs imposed as a result of its location, construction, or modification, based upon an…

Section 203.601 Lowest Achievable Emission Rate Compliance Requirement No person shall cause or allow the operation of a new major stationary source or major modification subject to the requirements of Subpart C, except as in compliance with applicable LAER provisions established…

Section 203.602 Emission Offset Maintenance Requirement No person shall cause or allow the operation of a new major stationary source or major modification where the owner or operator has demonstrated that it would not interfere with reasonable further progress by providing emiss…

Section 203.603 Ambient Monitoring Requirement (Repealed) (Source: Repealed at 12 Ill. Reg. 6118, effective March 22, 1988) SUBPART G: GENERAL MAINTENANCE OF EMISSION OFFSETS

Section 203.701 General Maintenance of Emission Offsets No person shall cease to maintain emission offsets which were provided for a source or modification which is subject to this Part. (Source: Added at 12 Ill. Reg. 6118, effective March 22, 1988) SUBPART H: OFFSETS FOR EMISSIO…

Section 203.801 Offsetting by Alternative or Innovative Means A source may offset, by alternative or innovative means, emission increases from rocket engine and motor firing, and cleaning related to such firing, at an existing or modified major source that tests rocket engines or…

Section 204.100 Incorporations by Reference The following materials are incorporated by reference. These incorporations do not include any later amendments or editions. a) 40 CFR Part 50 (2018) b) 40 CFR Part 51 (2018) c) 40 CFR Part 52 (2018) d) 40 CFR Part 53 (2018) e) 40 CFR P…

Section 204.1000 Stack Heights a) The degree of emission limitation required for control of any air pollutant under this Part shall not be affected in any manner by: 1) So much portion of the stack height of any source that exceeds good engineering practice; or 2) Any other dispe…

Section 204.110 Abbreviations and Acronyms The following abbreviations, acronyms and terms are used in this Part: µg/m3 micrograms per cubic meter Act Illinois Environmental Protection Act Agency Illinois Environmental Protection Agency BACT Best Available Control Technology Boar…

Section 204.1100 Control Technology Review a) A major stationary source or major modification shall meet each applicable emissions limitation under the SIP and each applicable emissions standard and standard of performance under 40 CFR 60, 61, 62 and 63 (incorporated by reference…

Section 204.1110 Source Impact Analysis The owner or operator of the proposed source or modification shall demonstrate that allowable emission increases from the proposed source or modification, in conjunction with all other applicable emissions increases or reductions (including…

Section 204.1120 Air Quality Models a) All estimates of ambient concentrations required under this Section shall be based on applicable air quality models, databases, and other requirements specified in 40 CFR 51, appendix W (Guideline on Air Quality Models) (incorporated by refe…

Section 204.1130 Air Quality Analysis a) Preapplication Analysis 1) Any application for a permit under this Part shall contain an analysis of ambient air quality in the area that the major stationary source or major modification would affect for each of the following pollutants: …

Section 204.1140 Additional Impact Analyses a) The owner or operator shall provide an analysis of the impairment to visibility, soils and vegetation that would occur as a result of the source or modification and general commercial, residential, industrial and other growth associa…

Section 204.120 Severability If any provision of this Part, or the application of that provision to any person or circumstance, is held invalid, the remainder of this Part, or the application of the provision to persons or circumstances other than those as to which it is held inv…

Section 204.1200 Additional Requirements for Sources Impacting Federal Class I Areas a) Notice to Federal Land Managers. The Agency shall provide written notice of any permit application for a proposed major stationary source or major modification, the emissions from which may af…

Section 204.1300 Notification of Application Completeness to Applicants The Agency shall notify the applicant within 30 days after receipt as to the completeness of an application for a permit under this Part or any deficiency in the application or information submitted in such a…

Section 204.1310 Transmittal of Application to USEPA The Agency shall transmit to USEPA a copy of each permit application submitted under this Part relating to a major stationary source or a major modification.

Section 204.1320 Public Participation Prior to the initial issuance or a modification of a permit issued under this Part, the Agency shall provide, at a minimum, notice of the proposed issuance or modification of a permit, a comment period, and opportunity for public hearing unde…

Section 204.1330 Issuance Within One Year of Submittal of Complete Application Within one year after receipt of a complete application, a permit shall be granted or denied by the Agency.

Section 204.1340 Permit Rescission a) Any permit issued under this Part or a prior version of this Part shall remain in effect unless and until it expires under Section 204.830 or is rescinded under this Section. b) An owner or operator of a stationary source or modification who …

Section 204.1400 Recordkeeping and Reporting Requirements for Certain Projects at Major Stationary Sources Except as otherwise provided in subsection (f)(2), the provisions of this Section apply with respect to any regulated NSR pollutant emitted from projects involving existing …

Section 204.1500 Innovative Control Technology a) An owner or operator of a proposed major stationary source or major modification may request that the Agency in writing no later than the close of the comment period under 35 Ill. Adm. Code 252 to approve a system of innovative co…

Section 204.1600 Applicability a) The Agency may approve the use of an actuals PAL for any existing major stationary source if the PAL meets the requirements of this Subpart. The term "PAL" shall mean "actuals PAL" throughout this Subpart. b) Any physical change in or change in t…