33 C.F.R. § 64.23 Duration of marking on structures.
Title 33 - Navigation and Navigable Waters
Markings determined to be required shall be established and maintained until: (a) The structure is removed; or (b) Otherwise directed by the District Commander.
Title 33: Navigation and Navigable Waters
PART 64—MARKING OF STRUCTURES, SUNKEN VESSELS AND OTHER OBSTRUCTIONS
Subpart C—Structures
§ 64.23 Duration of marking on structures.

