Code of Federal Regulations (Last Updated: May 6, 2024) |
Title 40 - Protection of Environment |
Chapter I - Environmental Protection Agency |
SubChapter C - Air Programs |
Part 89 - Control of Emissions from New and in-Use Nonroad Compression-Ignition Engines |
Subpart A - General |
Appendix A to Subpart A of Part 89 - State Regulation of Nonroad Internal Combustion Engines
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Appendix A to Subpart A of Part 89 - State Regulation of Nonroad Internal Combustion Engines
This appendix sets forth the Environmental Protection Agency's (EPA's) interpretation of the Clean Air Act regarding the authority of states to regulate the use and operation of nonroad engines.
EPA believes that states are not precluded under section 209 from regulating the use and operation of nonroad engines, such as regulations on hours of usage, daily mass emission limits, or sulfur limits on fuel; nor are permits regulating such operations precluded, once the engine is no longer new. EPA believes that states are precluded from requiring retrofitting of used nonroad engines except that states are permitted to adopt and enforce any such retrofitting requirements identical to California requirements which have been authorized by EPA under section 209 of the Clean Air Act.
[62 FR 67736, Dec. 30, 1997]