ADMINISTRATIVE CODE

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  3. TITLE 35: ENVIRONMENTAL PROTECTION
  4. CHAPTER I: POLLUTION CONTROL BOARD
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
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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Section 217.121 New Emission Sources (Repealed)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 and 30-Day Rolling Average Basis
Section 217.154 Initial 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 Exemptions
Section 217.162 Exemptions (Repealed)
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 Exemptions
Section 217.182 Exemptions (Repealed)
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 Exemptions
Section 217.202 Exemptions (Repealed)
Section 217.204 Emissions Limitations

SUBPART H: CEMENT AND LIME KILNS

Section 217.220 Applicability Exemptions
Section 217.222 Exemptions (Repealed)
Section 217.224 Emissions Limitations

SUBPART I: IRON AND STEEL AND ALUMINUM MANUFACTURING

Section 217.240 Applicability Exemptions
Section 217.242 Exemptions (Repealed)
Section 217.244 Emissions Limitations

SUBPART K: PROCESS EMISSION SOURCES

Section 217.301 Industrial Processes

SUBPART M: ELECTRICAL GENERATING UNITS

Section 217.340 Applicability and Exemptions
Section 217.342 Exemptions (Repealed)
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 and 30-Day Rolling Average Basis
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
Section 217.APPENDIX I: Compliance Dates for Certain Emissions Units at Petroleum Refineries and Petrochemical Facilities
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].
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; amended in R25-17 at 49 Ill. Reg. 6355, effective April 23, 2025.