As discussed in the answer to question #7 above, samples taken for determining the certified properties of the fuel, and some analysis of the gasoline properties, must occur before the gasoline is fungibly mixed with other gasoline.(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)