Site Feedback

Website Feedback

This contact form is only for website help or website suggestions. If you have questions or comments regarding a published document please contact the publishing agency. Comments or questions about document content can not be answered by OFR staff. Please do not provide confidential information or personal data.

Title 40

Displaying title 40, up to date as of 7/17/2026. Title 40 was last amended 7/16/2026.
view historical versions
  1. Title 40 —Protection of Environment
  2. Chapter I —Environmental Protection Agency
  3. Subchapter C —Air Programs
  4. Part 60 —Standards of Performance for New Stationary Sources
  5. Subpart JJJJ   View Full Text
  • Details
  • Print
  • Search
  • Subscribe
  • Timeline
  • Go to Date
  • Published Edition
  • Developer Tools
eCFR Content

The Code of Federal Regulations (CFR) is the official legal print publication containing the codification of the general and permanent rules published in the Federal Register by the departments and agencies of the Federal Government. The Electronic Code of Federal Regulations (eCFR) is a continuously updated online version of the CFR. It is not an official legal edition of the CFR.

Learn more about the eCFR, its status, and the editorial process.

Title 40Protection of EnvironmentPart / Section
Chapter IEnvironmental Protection Agency1 – 1099
Subchapter CAir Programs50 – 99
Part 60Standards of Performance for New Stationary Sources60.1 – 60.6685
Subpart JJJJStandards of Performance for Stationary Spark Ignition Internal Combustion Engines60.4230 – 60.4248
What This Subpart Covers60.4230
§ 60.4230Am I subject to this subpart?
Emission Standards for Manufacturers60.4231 – 60.4232
§ 60.4231What emission standards must I meet if I am a manufacturer of stationary SI internal combustion engines or equipment containing such engines?
§ 60.4232How long must my engines meet the emission standards if I am a manufacturer of stationary SI internal combustion engines?
Emission Standards for Owners and Operators60.4233 – 60.4234
§ 60.4233What emission standards must I meet if I am an owner or operator of a stationary SI internal combustion engine?
§ 60.4234How long must I meet the emission standards if I am an owner or operator of a stationary SI internal combustion engine?
Other Requirements for Owners and Operators60.4235 – 60.4237
§ 60.4235What fuel requirements must I meet if I am an owner or operator of a stationary SI gasoline fired internal combustion engine subject to this subpart?
§ 60.4236What is the deadline for importing or installing stationary SI ICE produced in previous model years?
§ 60.4237What are the monitoring requirements if I am an owner or operator of an emergency stationary SI internal combustion engine?
Compliance Requirements for Manufacturers60.4238 – 60.4242
§ 60.4238What are my compliance requirements if I am a manufacturer of stationary SI internal combustion engines ≤19 KW (25 HP) or a manufacturer of equipment containing such engines?
§ 60.4239What are my compliance requirements if I am a manufacturer of stationary SI internal combustion engines >19 KW (25 HP) that use gasoline or a manufacturer of equipment containing such engines?
§ 60.4240What are my compliance requirements if I am a manufacturer of stationary SI internal combustion engines >19 KW (25 HP) that are rich burn engines that use LPG or a manufacturer of equipment containing such engines?
§ 60.4241What are my compliance requirements if I am a manufacturer of stationary SI internal combustion engines participating in the voluntary certification program or a manufacturer of equipment containing such engines?
§ 60.4242What other requirements must I meet if I am a manufacturer of stationary SI internal combustion engines or equipment containing stationary SI internal combustion engines or a manufacturer of equipment containing such engines?
Compliance Requirements for Owners and Operators60.4243
§ 60.4243What are my compliance requirements if I am an owner or operator of a stationary SI internal combustion engine?
Testing Requirements for Owners and Operators60.4244
§ 60.4244What test methods and other procedures must I use if I am an owner or operator of a stationary SI internal combustion engine?
Notification, Reports, and Records for Owners and Operators60.4245
§ 60.4245What are my notification, reporting, and recordkeeping requirements if I am an owner or operator of a stationary SI internal combustion engine?
General Provisions60.4246
§ 60.4246What General Provisions and confidential information provisions apply to me?
Mobile Source Provisions60.4247
§ 60.4247What parts of the mobile source provisions apply to me if I am a manufacturer of stationary SI internal combustion engines or a manufacturer of equipment containing such engines?
Definitions60.4248
§ 60.4248What definitions apply to this subpart?
Table 1 to Subpart JJJJ of Part 60
NOX, CO, and VOC Emission Standards for Stationary Non-Emergency SI Engines ≥100 HP (Except Gasoline and Rich Burn LPG), Stationary SI Landfill/Digester Gas Engines, and Stationary Emergency Engines >25 HP
Table 2 to Subpart JJJJ of Part 60
Requirements for Performance Tests
Table 3 to Subpart JJJJ of Part 60
Applicability of General Provisions to Subpart JJJJ
Table 4 to Subpart JJJJ of Part 60
Applicability of Mobile Source Provisions for Manufacturers Participating in the Voluntary Certification Program and Certifying Stationary SI ICE to Emission Standards in Table 1 of Subpart JJJJ
eCFR Content