The PTD requirements refer only to the transferring of custody or title of any reformulated gasoline, RBOB, or conventional gasoline. If these "book transfers" involve the transferring of custody or title of such fuels then the PTD requirements would be applicable.
The PTD information could be included on whatever documents are currently being used to memorialize these transactions for business reasons.(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)