Final Rule for Control of Emissions of Air Pollution From Nonroad Diesel Engines and Fuel
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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) (1.87 MB, published June 29, 2004)
- Regulatory Impact Analysis (pdf) (5.9 MB, EPA420-R-04-007, May 2004)
- Summary and Analysis of Comments (pdf) (1.73 MB, EPA420-R-04-008, May 2004)
Rule History
Additional Resources
- Fact Sheet: Clean Air Nonroad Diesel Rule (pdf) (122 KB, EPA-420-F-04-032, published May 2004)