Final Rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines and Fuel
On this page:
Rule Summary
Referenced Tier Level
- Tier 4
In 2004, EPA finalized Tier 4 emission standards for nonroad diesel engines and sulfur reductions in nonroad diesel fuel will dramatically reduce harmful emissions and will directly help States and local areas recently designated as 8-hour ozone nonattainment areas to improve their air quality. This comprehensive national program regulates nonroad diesel engines and diesel fuel as a system.
- Final Rule (PDF)(317 pp, 1.88 MB, published June 29, 2004)
- Regulatory Impact Analysis (PDF)(1568 pp, 5.89 MB, EPA-420-R-04-007, published May 2004)
- Summary and Analysis of Comments (PDF)(567 pp, 1.68 MB, EPA-420-R-04-008, published May 2004)
Rule History
Additional Resources
Fact Sheet
- Clean Air Nonroad Diesel Rule (PDF)(5 pp, 122 K, EPA-420-F-04-032, published May 2004)