Proposed Rule and Related Materials for Control of Emissions From Nonroad Large Spark-Ignition Engines and Recreational Engines (Marine and Land-Based)

In this action, EPA proposed emission standards for several groups of nonroad engines that cause or contribute to air pollution but that had yet to be regulated by EPA. These engines include large spark-ignition engines such as those used in forklifts and airport tugs; recreational vehicles using spark-ignition engines such as off-highway motorcycles, all-terrain vehicles, and snowmobiles; and recreational marine diesel engines. Nationwide, engines and vehicles in these various categories contribute to ozone, CO, and PM nonattainment.

• Proposed Rule; Re-opening of Comment Period (pdf) (146 KB, published May 1, 2002)
• Proposed Rule (pdf) (955 KB, published October 5, 2001)

Rule History

• Advance Notice of Proposed Rulemaking for Control of Emissions From Nonroad Large Spark-Ignition Engines, Recreational Engines (Marine and Land-Based), and Highway Motorcycles

Related Materials

Fact Sheet

• Emission Standards for New Nonroad Engines (pdf) (55.6 KB, EPA420-F-01-026, September 2001)

Draft Regulatory Support Document

• Draft Regulatory Support Document (pdf) (928 KB, EPA420-D-01-004, September 2001)

Technical Support Document

• Report of the Small Business Advocacy Review Panel On Emissions Standards for New Compression-ignition and Spark-ignition Recreational Marine Engines (pdf) (180 KB, EPA420-R-01-048, September 2001)

Draft Final Reports

• Nonroad Recreational Vehicle Technologies and Costs (pdf) (241 KB, EPA420-R-01-044, September 2001)
• Characterization of Off-Road Motorcycle Use (pdf) (263 KB, EPA420-R-01-046, September 2001)
• Large SI Engine Technologies and Costs Draft Final Report (pdf) (106 KB, EPA420-R-01-045, September 2001)

Frequently Asked Questions

• Emission Standards for Off-Highway Motorcycles (pdf) (15.4 KB, EPA420-F-01-025, September 2001)
• Emission Standards for All-Terrain Vehicles (ATVs) (pdf) (14.8 KB, EPA420-F-01-027, September 2001)
• Emission Standards for Snowmobiles (pdf) (14.5 KB, EPA420-F-01-024, September 2001)
• Emission Standards for Industrial Spark-ignition Engines (pdf) (13.9 KB, EPA420-F-01-028, September 2001)
• Emission Standards for Recreational Marine Diesel Engines (pdf) (14.2 KB, EPA420-F-01-029, September 2001)
• Environmental Impacts of Recreational Vehicles and Other Nonroad Engines (pdf) (183 KB, EPA420-F-01-030, September 2001)