The regulations require PTD's on each occasion when any person transfers custody or title of RFG, RBOB or conventional gasoline and conventional gasoline blendstock requiring the addition of oxygenate only.
When the custody of gasoline changes within a proprietary distribution system the documents that are currently being used to memorialize the gasoline movement should contain the information specified for PTD's.(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)