U.S. Code of Federal Regulations

Regulations most recently checked for updates: Jan 21, 2026

All TitlesTitle 40Chapter IPart 60Subpart KKKKa - Subpart KKKKa—Standards of Performance for Stationary Combustion Turbines

INTRODUCTION
§ 60.4300a - What is the purpose of this subpart?

APPLICABILITY
§ 60.4305a - Does this subpart apply to my stationary combustion turbine?
§ 60.4310a - What stationary combustion turbines are not subject to this subpart?

EMISSION STANDARDS
§ 60.4315a - What pollutants are regulated by this subpart?
§ 60.4320a - What NOX emissions standard must I meet?
§ 60.4325a - What emission limit must I meet for NOX if my turbine burns both natural gas and distillate oil (or some other combination of fuels)?
§ 60.4330a - What SO2 emissions standard must I meet?
§ 60.4331a - What are the requirements for operating a stationary temporary combustion turbine?

GENERAL COMPLIANCE REQUIREMENTS
§ 60.4333a - What are my general requirements for complying with this subpart?

MONITORING
§ 60.4335a - How do I demonstrate compliance with my NOX emissions standard without using a NOX CEMS if I use water or steam injection?
§ 60.4340a - How do I demonstrate compliance with my NOX emissions standard without using a NOX CEMS if I do not use water or steam injection?
§ 60.4342a - How do I monitor NOX control operating parameters?
§ 60.4345a - How do I demonstrate compliance with my NOX emissions standard using a NOX CEMS?
§ 60.4350a - How do I use the NOX CEMS data to determine excess emissions?
§ 60.4360a - How do I use fuel sulfur analysis to determine the total sulfur content of the fuel combusted in my stationary combustion turbine?
§ 60.4370a - How frequently must I determine the fuel sulfur content?
§ 60.4372a - How can I demonstrate compliance with my SO2 emissions standard using records of the fuel sulfur content?
§ 60.4374a - How do I demonstrate compliance with my SO2 emissions standard and determine excess emissions using a SO2 CEMS?

RECORDKEEPING AND REPORTING
§ 60.4375a - What reports must I submit?
§ 60.4380a - How are NOX excess emissions and monitor downtime reported?
§ 60.4385a - How are SO2 excess emissions and monitor downtime reported?
§ 60.4390a - What records must I maintain?
§ 60.4395a - When must I submit my reports?

PERFORMANCE TESTS
§ 60.4400a - How do I conduct performance tests to demonstrate compliance with my NOX emissions standard if I do not have a NOX CEMS?
§ 60.4405a - How do I conduct a performance test if I use a NOX CEMS?
§ 60.4415a - How do I conduct performance tests to demonstrate compliance with my SO2 emissions standard?

OTHER REQUIREMENTS AND INFORMATION
§ 60.4416a - What parts of the general provisions apply to my affected EGU?
§ 60.4417a - Who implements and enforces this subpart?
§ 60.4420a - What definitions apply to this subpart?
Appendix - Table 1 to Subpart KKKKa of Part 60—Nitrogen Oxide Emission Standards for Stationary Combustion Turbines
Appendix - Table 2 to Subpart KKKKa of Part 60—Alternative Mass-Based NOX Emission Standards for Stationary Combustion Turbines
Appendix - Table 3 to Subpart KKKKa of Part 60—Applicability of Subpart A of This Part to This Subpart
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