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

On this page:

• Rule Summary
• Rule History

Rule Summary

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.

• Final Rule (published June 17, 1994)

Rule History

• Proposed Rule (PDF) (39 pp, 47 MB, published May 17, 1993, About PDF)