No new ID is necessary. Batches of reformulated gasoline may be fungibly mixed, subject to the segregation provisions of § 80.78.(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)