33 C.F.R. § 20.602 Amendatory or supplementary responses.
Title 33 - Navigation and Navigable Waters
(a) Any party or interested person shall amend or supplement information previously provided upon learning that the information— (1) Was incorrect or incomplete when provided; or, (2) Though correct or complete when provided, no longer is. (b) The party or interested person shall amend or supplement that information by following the procedures in §20.305.
Title 33: Navigation and Navigable Waters
PART 20—RULES OF PRACTICE, PROCEDURE, AND EVIDENCE FOR FORMAL ADMINISTRATIVE PROCEEDINGS OF THE COAST GUARD
Subpart F—Discovery
§ 20.602 Amendatory or supplementary responses.

