Proposed Rule and Related Materials for Control of Air Pollution: Minor Amendments to Emission Requirements Applicable to Small Nonroad Spark-Ignition Engines and Marine Spark Ignition Engines
The EPA proposed Phase 2 standards for nonroad small spark-ignition (SI) engines that will reduce hydrocarbons plus oxides of nitrogen (HC+NOx) by an additional 30 percent beyond the current Phase 1 standards. The proposed rule includes provisions that give industry flexibility and ease the transition to the more stringent Phase 2 program, especially for small volume engine and equipment manufacturers. The new standards would be phased in between 2001 and 2005.
- Proposed Rule (pdf) (156 KB, published February 3, 1999)
Additional Resources
- Fact Sheet: Proposed Phase 2 Standards for Small Spark-Ignition Engines (pdf) (39.7 KB, EPA420-F-97-045, December 1997)
- Supplemental Notice of Proposed Rulemaking (pdf) (387 KB, published July 28, 1999)