41 CFR § 102-117.185
Where must I send a copy of the transportation documents?
June 9, 2020
(a) You must forward an original copy of all transportation documents to:
General Services Administration
Federal Supply Service
Audit Division (FBA)
1800 F Street, NW.
Washington, DC 20405
(b) For all property shipments subject to the cargo preference laws (see §102-117.140), a copy of the ocean carrier's bill of lading, showing all freight charges, must be sent to MARAD within 30 days of vessel loading.