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 www.epa.gov. 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 This website is no longer updated and links to external websites and some internal pages may not work.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

Can ether RFG and alcohol RFG be mixed outside the VOC season provided the substantially similar requirements are not violated.

VOC-controlled RFG produced with ethanol cannot be mixed with VOC-controlled any-oxygenate RFG from January 1, through September 15 at any point in the distribution system, including at retail outlets and wholesale-purchaser consumers facilities.(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)