U.S. Code of Federal Regulations

Regulations most recently checked for updates: Oct 30, 2025

All TitlesTitle 40Chapter IPart 60Subpart TTTTa - Subpart TTTTa—Standards of Performance for Greenhouse Gas Emissions for Modified Coal-Fired Steam Electric Generating Units and New Construction and Reconstruction Stationary Combustion Turbine Electric Generating Units

APPLICABILITY
§ 60.5508a - What is the purpose of this subpart?
§ 60.5509a - Am I subject to this subpart?

EMISSION STANDARDS
§ 60.5515a - Which pollutants are regulated by this subpart?
§ 60.5520a - What CO2 emissions standard must I meet?
§ 60.5525a - What are my general requirements for complying with this subpart?

MONITORING AND COMPLIANCE DETERMINATION PROCEDURES
§ 60.5535a - How do I monitor and collect data to demonstrate compliance?
§ 60.5540a - How do I demonstrate compliance with my CO2 emissions standard and determine excess emissions?

NOTIFICATION, REPORTS, AND RECORDS
§ 60.5550a - What notifications must I submit and when?
§ 60.5555a - What reports must I submit and when?
§ 60.5560a - What records must I maintain?
§ 60.5565a - In what form and how long must I keep my records?

OTHER REQUIREMENTS AND INFORMATION
§ 60.5570a - What parts of the general provisions apply to my affected EGU?
§ 60.5575a - Who implements and enforces this subpart?
§ 60.5580a - What definitions apply to this subpart?
Appendix - Table 1 to Subpart TTTTa of Part 60—CO2 Emission Standards for Affected Stationary Combustion Turbines That Commenced Construction or Reconstruction After May 23, 2023 (Gross or Net Energy Output-Based Standards Applicable as Approved by the Administrator)
Appendix - Table 2 to Subpart TTTTa of Part 60—CO2 Emission Standards for Affected Steam Generating Units or IGCC That Commenced Modification After May 23, 2023
Appendix - Table 3 to Subpart TTTTa of Part 60—Applicability of Subpart A of Part 60 (General Provisions) to Subpart TTTTa
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