Fuels and Fuel Additives
Mobile Source Air Toxics (MSAT)
The Mobile Source Air Toxics (MSAT) rules reduce hazardous air pollutants, also known as air toxics, emitted by cars and trucks. Air toxics include benzene and other hydrocarbons such as 1,3-butadiene, formaldehyde, acetaldehyde, acrolein, and naphthalene. Each refinery and importer must meet specific compliance baselines for conventional and reformulated gasoline.
- Regulatory Program: Mobile Source Air Toxics.
- Fact Sheet: Control of Hazardous Air Pollutants from Mobile Sources (PDF) (5 pp, 143K, EPA420-F-07-017, February 2007, About PDF)
If you have questions or request information, please contact the appropriate support or help line found on the Support & Help page.
Please visit EPA's Transportation and Air Quality web-based repository of mobile source documents, Document Index System (DIS). This searchable repository contains regulations, Federal Register notices, policy letters, and guidance documents.
Please visit our Related Links page for other fuel related information within EPA, other U.S. Agencies, and other fuel related websites.