Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

JavaScript appears to be disabled on this computer. Please click here to see any active alerts.

A procedure has been outlined by the EPA for the certification of oxygen content by meter for the oxyfuel program. Can this method be used for certification of oxygen content in reformulated gasoline? Is an exemption for in-line blending required?

See More Frequent Questions about Fuels Registration, Reporting, and Compliance Help.

No. The regulatory method for oxygen testing, or the approved temporary method discussed in question 39, must be used for certification of reformulated gasoline produced at the refinery and also for blending oxygenate with RBOB. For further discussion of the exemption see the In-line Blending Section. (7/1/94)

This question and answer was posted at List of Reformulated Gasoline and Anti-Dumping Questions and Answers: July 1, 1994 through November 10, 1997 (pdf) (2.98 MB, July 2003)