Testing for downstream quality assurance programs may be done with test methods other than the regulatory methods if adequate correlation to the regulatory test methods is demonstrated. However, testing for downstream oxygenate blending must be done using the regulatory test methods.(10/3/94)

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)