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Question: What does EPA mean by "blending RVP of oxygenate" (equation in § 80.91(e)(4)(i)(B))?

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

This means the effect that an oxygenate has on RVP when it is assumed to have a constant RVP effect per volume added. This is analogous to the blending RVP for any other hydrocarbon, except that blending RVPs for hydrocarbons are generally independent of other factors while those for oxygenates may depend on the hydrocarbon composition and the amount of oxygenate added.(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)