Replacement of a lost or stolen Form I-94 falls under the responsibility of Department of Homeland Security (DHS).  To file for a replacement I-94, see Application for Replacement/Initial Nonimmigrant Arrival-Departure Document  at the Department of Homeland Security (DHS), U.S. Citizenship and Immigration Services (USCIS) Website and see Arrival-Departure Record at the DHS, Customs and Border Protection (CBP) Website.