An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Fuels Registration, Reporting, and Compliance Help

Since other ASTM methods are being developed that would allow use of one analyzer to obtain benzene, aromatics, and olefins, will EPA allow any of these new methods to be used in reformulated gasoline certification and/or a refiner's defense?

A refiner that intends to distribute RFG must certify that product using the test methods prescribed in the Final Rule. However, a refiner performing quality assurance testing downstream of the refinery may use other test methods provided these methods have been correlated with EPA's test methods.(7/1/94)

This question and answer was posted at Consolidated List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (PDF)(333 pp, 18.17 MB, EPA420-R-03-009, July 2003, About PDF)