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Regulations for Emissions from Vehicles and Engines

Final Rule for Determination of Significance for Nonroad Sources and Emission Standards for New Nonroad Compression-Ignition Engine at or Above 37 Kilowatts

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Rule Summary

Referenced Tier Level

  • Tier 1

In 1994, EPA finalized the determination of significance of emissions from nonroad engines. EPA also adopted Tier 1 emission standards for nonroad compression-ignition engines at or above 37 kW.

Rule History

Regulations for Emissions from Vehicles and Engines Home