TITLE 35: ENVIRONMENTAL PROTECTION SUBTITLE B: AIR POLLUTION CHAPTER I: POLLUTION CONTROL BOARD SUBCHAPTER c: EMISSION STANDARDS AND LIMITATIONS FOR STATIONARY SOURCES PART 217 NITROGEN OXIDES EMISSIONS The General Assembly's Illinois Administrative Code database includes only those rulemakings that have been permanently adopted. This menu will point out the Sections on which an emergency rule (valid for a maximum of 150 days, usually until replaced by a permanent rulemaking) exists. The emergency rulemaking is linked through the notation that follows the Section heading in the menu. View Entire Part SUBPART A: GENERAL PROVISIONS Section 217.100 Scope and Organization Section 217.101 Measurement Methods Section 217.102 Abbreviations and Units Section 217.103 Definitions Section 217.104 Incorporations by Reference SUBPART B: NEW FUEL COMBUSTION EMISSION SOURCES Section 217.121 New Emission Sources (Repealed) SUBPART C: EXISTING FUEL COMBUSTION EMISSION UNITS Section 217.141 Existing Emission Units in Major Metropolitan Areas SUBPART D: NOx GENERAL REQUIREMENTS Section 217.150 Applicability Section 217.152 Compliance Date Section 217.154 Performance Testing Section 217.155 Initial Compliance Certification Section 217.156 Recordkeeping and Reporting Section 217.157 Testing and Monitoring Section 217.158 Emissions Averaging Plans SUBPART E: INDUSTRIAL BOILERS Section 217.160 Applicability Section 217.162 Exemptions Section 217.164 Emissions Limitations Section 217.165 Combination of Fuels Section 217.166 Methods and Procedures for Combustion Tuning SUBPART F: PROCESS HEATERS Section 217.180 Applicability Section 217.182 Exemptions Section 217.184 Emissions Limitations Section 217.185 Combination of Fuels Section 217.186 Methods and Procedures for Combustion Tuning SUBPART G: GLASS MELTING FURNACES Section 217.200 Applicability Section 217.202 Exemptions Section 217.204 Emissions Limitations SUBPART H: CEMENT AND LIME KILNS Section 217.220 Applicability Section 217.222 Exemptions Section 217.224 Emissions Limitations SUBPART I: IRON AND STEEL AND ALUMINUM MANUFACTURING Section 217.240 Applicability Section 217.242 Exemptions Section 217.244 Emissions Limitations SUBPART K: PROCESS EMISSION SOURCES Section 217.301 Industrial Processes SUBPART M: ELECTRICAL GENERATING UNITS Section 217.340 Applicability Section 217.342 Exemptions Section 217.344 Emissions Limitations Section 217.345 Combination of Fuels SUBPART O: CHEMICAL MANUFACTURE Section 217.381 Nitric Acid Manufacturing Processes SUBPART Q: STATIONARY RECIPROCATING INTERNAL COMBUSTION ENGINES AND TURBINES Section 217.386 Applicability Section 217.388 Control and Maintenance Requirements Section 217.390 Emissions Averaging Plans Section 217.392 Compliance Section 217.394 Testing and Monitoring Section 217.396 Recordkeeping and Reporting SUBPART T: CEMENT KILNS Section 217.400 Applicability Section 217.402 Control Requirements Section 217.404 Testing Section 217.406 Monitoring Section 217.408 Reporting Section 217.410 Recordkeeping SUBPART U: NOx CONTROL AND TRADING PROGRAM FOR SPECIFIED NOx GENERATING UNITS Section 217.450 Purpose Section 217.451 Sunset Provisions Section 217.452 Severability Section 217.454 Applicability Section 217.456 Compliance Requirements Section 217.458 Permitting Requirements Section 217.460 Subpart U NOx Trading Budget Section 217.462 Methodology for Obtaining NOx Allocations Section 217.464 Methodology for Determining NOx Allowances from the New Source Set-Aside Section 217.466 NOx Allocations Procedure for Subpart U Budget Units Section 217.468 New Source Set-Asides for "New" Budget Units Section 217.470 Early Reduction Credits (ERCs) for Budget Units Section 217.472 Low-Emitter Requirements Section 217.474 Opt-In Units Section 217.476 Opt-In Process Section 217.478 Opt-In Budget Units: Withdrawal from the NOx Trading Program Section 217.480 Opt-In Units: Change in Regulatory Status Section 217.482 Allowance Allocations to Opt-In Budget Units SUBPART V: ELECTRIC POWER GENERATION Section 217.521 Lake of Egypt Power Plant Section 217.700 Purpose Section 217.702 Severability Section 217.704 Applicability Section 217.706 Emission Limitations Section 217.708 NOx Averaging Section 217.710 Monitoring Section 217.712 Reporting and Recordkeeping SUBPART W: NOx TRADING PROGRAM FOR ELECTRICAL GENERATING UNITS Section 217.750 Purpose Section 217.751 Sunset Provisions Section 217.752 Severability Section 217.754 Applicability Section 217.756 Compliance Requirements Section 217.758 Permitting Requirements Section 217.760 NOx Trading Budget Section 217.762 Methodology for Calculating NOx Allocations for Budget Electrical Generating Units (EGUs) Section 217.764 NOx Allocations for Budget EGUs Section 217.768 New Source Set-Asides for "New" Budget EGUs Section 217.770 Early Reduction Credits for Budget EGUs Section 217.774 Opt-In Units Section 217.776 Opt-In Process Section 217.778 Budget Opt-In Units: Withdrawal from NOx Trading Program Section 217.780 Opt-In Units: Change in Regulatory Status Section 217.782 Allowance Allocations to Budget Opt-In Units SUBPART X: VOLUNTARY NOx EMISSIONS REDUCTION PROGRAM Section 217.800 Purpose Section 217.805 Emission Unit Eligibility Section 217.810 Participation Requirements Section 217.815 NOx Emission Reductions and the Subpart X NOx Trading Budget Section 217.820 Baseline Emissions Determination Section 217.825 Calculation of Creditable NOx Emission Reductions Section 217.830 Limitations on NOx Emission Reductions Section 217.835 NOx Emission Reduction Proposal Section 217.840 Agency Action Section 217.845 Emissions Determination Methods Section 217.850 Emissions Monitoring Section 217.855 Reporting Section 217.860 Recordkeeping Section 217.865 Enforcement Section 217.APPENDIX A Rule into Section Table Section 217.APPENDIX B Section into Rule Table Section 217.APPENDIX C Compliance Dates Section 217.APPENDIX D Non-Electrical Generating Units Section 217.APPENDIX E Large Non-Electrical Generating Units Section 217.APPENDIX F Allowances for Electrical Generating Units Section 217.APPENDIX G Existing Reciprocating Internal Combustion Engines Affected by the NOx SIP Call Section 217.APPENDIX H Compliance Dates for Certain Emission Units at Petroleum Refineries

AUTHORITY: Implementing Sections 9.9 and 10 and authorized by Sections 27 and 28.5 of the Environmental Protection Act [415 ILCS 5/9.9, 10, 27 and 28.5 (2004)].

SOURCE: Adopted as Chapter 2: Air Pollution, Rule 207: Nitrogen Oxides Emissions, R71-23, 4 PCB 191, April 13, 1972, filed and effective April 14, 1972; amended at 2 Ill. Reg. 17, p. 101, effective April 13, 1978; codified at 7 Ill. Reg. 13609; amended in R01-9 at 25 Ill. Reg. 128, effective December 26, 2000; amended in R01-11 at 25 Ill. Reg. 4597, effective March 15, 2001; amended in R01-16 and R01-17 at 25 Ill. Reg. 5914, effective April 17, 2001; amended in R07-18 at 31 Ill. Reg. 14271, effective September 25, 2007; amended in R07-19 at 33 Ill. Reg. 11999, effective August 6, 2009; amended in R08-19 at 33 Ill. Reg. 13345, effective August 31, 2009; amended in R09-20 at 33 Ill. Reg. 15754, effective November 2, 2009; amended in R11-17 at 35 Ill. Reg. 7391, effective April 22, 2011; amended in R11-24 at 35 Ill. Reg. 14627, effective August 22, 2011; amended in R11-08 at 35 Ill. Reg. 16600, effective September 27, 2011; amended in R09-19 at 35 Ill. Reg. 18801, effective October 25, 2011; amended in R15-21 at 39 Ill. Reg. 16213, effective December 7, 2015; amended in R23-18(A) at 48 Ill. Reg. 13749, effective August 30, 2024.