Illinois Administrative Code

Section 217.204 Emissions Limitations a) On and after January 1, 2015, no person shall cause or allow emissions of NOx into the atmosphere from any glass melting furnace to exceed the following limitations. Until July 1, 2025, compliance must be demonstrated with the emissions li…

Section 217.220 Applicability Exemptions Before July 1, 2025, the provisions of this Subpart do not apply to a cement kiln or lime kiln operating under a federally enforceable limit of NOx emissions from the kiln to less than 15 tons per year and less than five tons per ozone sea…

Section 217.222 Exemptions (Repealed) (Source: Repealed at 49 Ill. Reg. 6355, effective April 23, 2025)

Section 217.224 Emissions Limitations a) On and after January 1, 2015, no person shall cause or allow emissions of NOx into the atmosphere from any cement kiln to exceed the following limitations. Until July 1, 2025, compliance must be demonstrated with the applicable emissions l…

Section 217.240 Applicability Exemptions Before July 1, 2025, the provisions of this Subpart do not apply to an iron and steel reheat furnace, annealing furnace, or galvanizing furnace, or aluminum reverberatory furnace or crucible furnace operating under a federally enforceable …

Section 217.242 Exemptions (Repealed) (Source: Repealed at 49 Ill. Reg. 6355, effective April 23, 2025)

Section 217.244 Emissions Limitations a) On and after January 1, 2015, no person shall cause or allow emissions of NOx into the atmosphere from any reheat furnace, annealing furnace, or galvanizing furnace used in iron and steel making to exceed the following limitations. Until J…

Section 217.301 Industrial Processes a) New Industrial Processes. No person shall cause or allow the emission of nitrogen oxides into the atmosphere from any new process producing products of organic nitrations and/or oxidations using nitric acid to exceed the following standards…

Section 217.340 Applicability and Exemptions a) Notwithstanding Subpart V of this Part, the provisions of Subpart D of this Part and this Subpart apply to any fossil fuel-fired stationary boiler serving at any time a generator that has a nameplate capacity greater than 25 MWe and…

Section 217.342 Exemptions (Repealed) (Source: Repealed at 49 Ill. Reg. 6355, effective April 23, 2025)

Section 217.344 Emissions Limitations On and after January 1, 2015, no person shall cause or allow emissions of NOx into the atmosphere from any fossil fuel-fired stationary boiler to exceed the following limitations. Until July 1, 2025, compliance must be demonstrated with the a…

Section 217.345 Combination of Fuels The owner or operator of a fossil fuel-fired stationary boiler subject to this Subpart and operated with any combination of fuels must comply with a heat input weighted average emissions limitation to demonstrate compliance with Section 217.34…

Section 217.381 Nitric Acid Manufacturing Processes a) New Weak Nitric Acid Processes. A person must not cause or allow the emission of nitrogen oxides into the atmosphere from any new weak nitric acid manufacturing process to exceed any of the following standards and limitations…

Section 217.386 Applicability a) Before July 1, 2025, the provisions of this Subpart apply to all: 1) Stationary reciprocating internal combustion engines listed in Appendix G of this Part. 2) Stationary reciprocating internal combustion engines and turbines located at a source t…

Section 217.388 Control and Maintenance Requirements a) On and after the applicable compliance date in Section 217.392, an owner or operator of an affected unit must inspect and maintain affected units as required by subsection (a)(4) of this Section and comply with one of the fo…

Section 217.390 Emissions Averaging Plans a) An owner or operator of certain affected units may comply through an emissions averaging plan. 1) A unit or units that commenced operation before January 1, 2017 may be included in only one emissions averaging plan, as follows: A) Unit…

Section 217.392 Compliance and 30-Day Rolling Average Basis a) On and after January 1, 2008, an owner or operator of an affected engine listed in Appendix G may not operate the affected engine unless the requirements of this Subpart Q are met. b) On and after May 1, 2010, an owne…

Section 217.394 Testing and Monitoring a) Before July 1, 2025, an owner or operator must conduct an initial performance test under subsection (d)(1) or (d)(2) of this Section as follows: 1) By January 1, 2008, for affected engines listed in Appendix G. Performance tests must be c…

Section 217.396 Recordkeeping and Reporting a) Recordkeeping. The owner or operator of any unit included in an emissions averaging plan (e.g., affected units, nonsubject units, units that could be exempt under Section 217.386(c), and low usage units) or an affected unit that is n…

Section 217.400 Applicability The requirements of this Subpart shall apply to the types of cement kilns listed below with process rates in tons per hour (TPH) of clinker produced that are greater than or equal to the following: a) Long dry kilns – 12 TPH; b) Long wet kilns – 10 T…

Section 217.402 Control Requirements a) After May 30, 2004, an owner or operator of any cement kiln subject to the requirements of this Subpart shall not operate the kiln during the initial control period or any subsequent control period, unless the owner or operator complies wit…

Section 217.404 Testing a) Any owner or operator of a kiln that commenced operation prior to May 1, 2003, and using a low-NOx burner or mid-kiln firing system to demonstrate compliance pursuant to Section 217.402(a)(1) of this Subpart must maintain and operate the device accordin…

Section 217.406 Monitoring a) The owner or operator of a kiln subject to this Subpart must submit a complete monitoring plan addressing the applicable requirements of subsection (b) of this Section to the Agency and obtain approval of such plan by the Agency. The monitoring plan …

Section 217.408 Reporting a) By May 31, 2004, or within one year after initial startup, whichever occurs later, the owner or operator of a kiln subject to the requirements of this Subpart must submit to the Agency an initial compliance certification for each kiln subject to the r…

Section 217.410 Recordkeeping a) Any owner or operator of a cement kiln subject to this Subpart must produce and maintain records that include, but are not limited to: 1) Emissions in pounds of NOx per ton of clinker produced from each kiln subject to the requirements of Section …

Section 217.450 Purpose The purpose of this Subpart is to cap the emissions of nitrogen oxides (NOx) during the ozone control period from units subject to the provisions of this Subpart (budget units) by determining source allocations and by implementing the federal NOx Trading P…

Section 217.451 Sunset Provisions Except for Sections 217.454(a) and (b) and 217.456(c), (e)(1)(B) through (D), and (e)(2), the provisions of this Subpart U shall not apply for any control period in 2009 or thereafter. Compliance for 2009 and after is required for these subsectio…

Section 217.452 Severability If any Section, subsection or clause of this Subpart is found invalid, such finding shall not affect the validity of this Subpart as a whole or any Section, sentence or clause not found invalid. (Source: Added at 25 Ill. Reg. 5914, effective April 17,…

Section 217.454 Applicability a) This Subpart applies to any fossil fuel-fired stationary boiler, combustion turbine, or combined cycle system, with a maximum design heat input greater than 250 mmbtu/hr and that is: 1) A unit listed in Appendix E of this Subpart, irrespective of …

Section 217.456 Compliance Requirements All budget units subject to the requirements of this Subpart must comply with the following: a) The requirements of this Subpart and 40 CFR 96, excluding 40 CFR 96.4(b), 96.55(c) and subparts C, E, and I, as incorporated by reference in Sec…

Section 217.458 Permitting Requirements a) Budget permit requirements: 1) The owner or operator of each source with one or more budget units subject to this Subpart is required to timely submit, in accordance with subsection (a)(4), (a)(5), or (a)(6) of this Section, as applicabl…

Section 217.460 Subpart U NOx Trading Budget a) The initial NOx allowances available for allocation for each control period (the Subpart U NOx trading budget) for budget units subject to the provisions of this Subpart shall be 4,882 tons per control period, subject to adjustment …

Section 217.462 Methodology for Obtaining NOx Allocations a) Appendix E of this Part identifies the sources with existing budget units subject to this subpart and the number of NOx allowances allocations that each such budget unit is eligible to receive each control period, subje…

Section 217.464 Methodology for Determining NOx Allowances from the New Source Set-Aside a) The methodology for calculating the allowances available to be allocated to new budget units subject to this Subpart from the new source set-aside is based on the more stringent emission r…

Section 217.466 NOx Allocations Procedure for Subpart U Budget Units For each control period, the Agency will allocate the total number of NOx allowances in the Subpart U NOx Trading Budget apportioned to budget units under Section 217.460 of this Subpart, subject to adjustment a…

Section 217.468 New Source Set-Asides for "New" Budget Units a) For the 2004, 2005 and 2006 control periods, a "new" budget unit is one that commenced commercial operation on or after January 1, 2000. For the 2007 and later control periods, a "new" budget unit is one that commenc…

Section 217.470 Early Reduction Credits (ERCs) for Budget Units If a budget unit reduces its NOx emission rate as required by the applicable provisions of subsection (c) of this Section in the 2001 or 2002 control period, or if approved by USEPA the 2003 control period, for use i…

Section 217.472 Low-Emitter Requirements Starting with the effective date of the permit referred to in Section 217.454(c), the budget unit electing low-emitter status shall be subject only to the requirements of this Section. a) For each control period the owner or operator elect…

Section 217.474 Opt-In Units a) Any operating fossil fuel-fired stationary boiler, combustion turbine, combined cycle system, cement kiln or stationary internal combustion engine in the State may qualify under this Subpart to become an opt-in budget unit if it: 1) Is not a budget…

Section 217.476 Opt-In Process The Agency will issue or deny a budget permit for an opt-in unit in accordance with Section 217.458 of this Subpart and the following: a) The Agency will determine, on an interim basis, the sufficiency of the monitoring plan accompanying the initial…

Section 217.478 Opt-In Budget Units: Withdrawal from the NOx Trading Program a) Requesting withdrawal: To withdraw from the NOx Trading Program, the account representative of an opt-in budget unit shall submit to the Agency a request to withdraw from the NOx Trading Program and t…

Section 217.480 Opt-In Units: Change in Regulatory Status a) Notification: When an opt-in unit becomes an opt-in budget unit under Section 217.476 of this Subpart, the owner or operator shall notify the Agency and USEPA in writing of such change in the opt-in unit's regulatory st…

Section 217.482 Allowance Allocations to Opt-In Budget Units a) Allowance allocations: 1) By the December 31 immediately before the first control period for which the budget permit is effective, the Agency will allocate allowances to the opt-in budget unit and submit to USEPA the…

Section 217.521 Lake of Egypt Power Plant a) The standard for nitrogen oxides of Section 217.121(d) does not apply when solid fossil fuel containing 25 percent by weight or more of coal refuse is burned in Southern Illinois Power Cooperative's Unit No. 4 at its Lake of Egypt Powe…

Section 217.700 Purpose The purpose of this Subpart is to control the emissions of nitrogen oxides (NOx) from electrical generating units (EGUs) during the ozone control period (for purposes of Subpart V, the ozone control period is May 1 through September 30 of each year, beginn…

Section 217.702 Severability If any section, subsection or clause of this Subpart is found invalid, such finding shall not affect the validity of this Subpart as a whole or any Section, subsection or clause not found invalid. (Source: Added at 25 Ill. Reg. 5914, effective April 1…

Section 217.704 Applicability The following fossil fuel-fired stationary boilers, combustion turbines or combined cycle systems are electrical generating units (EGUs) and shall be subject to this Subpart on and after May 1, 2003: a) Any unit serving a generator that has a namepla…