EPA will require that each party who wants to report electronically must sign an agreement that the use of electronic reporting methods will be considered equivalent to paper methods and that personal identification numbers assigned by EPA will be recognized as constituting a valid signature.

In addition, each transmission sent to EPA must have embedded in it two personal identification numbers (PINs), one assigned to the company and one assigned to the individual certifying the report.(7/1/94)

This question and answer was originally 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)