Nonroad diesel engines contribute greatly to air pollution in many of our nation's cities and towns. In recent years, EPA has set emission standards for the engines used in most construction, agricultural, and industrial equipment. We have also adopted nonroad diesel fuel requirements to decrease the allowable levels of sulfur, which can damage advanced emission control technologies. The most recent nonroad engine and fuel regulations complement similarly stringent regulations for diesel highway trucks and buses and highway diesel fuel for 2007. This site provides general and technical information on EPA's current and past regulations for nonroad diesel engines and fuel.

This Web site contains the following:

Basic Information: Provides background information on air pollution from nonroad engines and EPA actions to address nonroad diesel emissions. For samples of many types of equipment, visit our Photo Gallery of equipment page.

Newsroom: Has press releases about EPA regulations for nonroad diesel engines and fuel.

Regulations/Standards: Has all the proposed and final rules for regulating emissions from nonroad diesel engines and fuel, including the May 11, 2004 Clean Air Nonroad Diesel Rule.

Compliance Help: Provides guidance for the regulated community on how to comply with EPA regulations.

Publications: Provides technical papers, reports, guidance documents, and fact sheets, including the May 11, 2004 Clean Air Nonroad Diesel Final Rule fact sheet.

Diesel Milestones:  Lists actions EPA has taken to reduce emissions from diesel engines since the Clean Air Act Amendments of 1990.

Related Links:  Offers related sites for further information and assistance.