41 C.F.R. § 102-34.190
Your agency head must designate an official to authorize the District of Columbia (DC) or State motor vehicle department to issue DC license plates or State license plates for motor vehicles exempt from displaying U.S. Government license plates and motor vehicle identification. The agency head must provide the name and signature of that official to the DC Department of Transportation annually, or to the equivalent State vehicle motor vehicle department, as required. Agencies must pay DC and the States for these license plates in accordance with DC or State policy. Also, for motor vehicles leased from the GSA Fleet, send a list of the new plates to: General Services Administration, ATTN: GSA Fleet (QMDB), 2200 Crystal Drive, Arlington, VA 22202.
41 C.F.R. § 102-34.190