D.C. Mun. Regs. tit. 9, r. 9-3006
Each holder required to file a report under § 117 of the Act shall, with respect to any property for which it has obtained the address of the owner, maintain a record of the name and address of the owner for ten (10) years after the date the property became reportable.
Any business association in the District that sells traveler's checks, money orders, or other similar written instruments, other than third party checks, shall maintain a record of the instruments while they remain outstanding. The record shall indicate the state and date of issue for three (3) years after the date the property became reportable.
A record may be destroyed after the record has been retained for a reasonable time as designated by the Mayor.
D.C. Mun. Regs. tit. 9, r. 9-3006