Registration is required only for oxygenate blending facilities at which RFG is produced, and not for oxygenate blending facilities where oxygenate is blended with conventional gasoline only. If an oxygenate blender decides to blend RBOB with oxygenates to produce RFG at a facility that has not previously been registered, the facility must be registered three months prior to blending.(10/17/94)

This question and answer was originally 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)