Cal. Fish & Game Code § 3053

In the case of loss or destruction of a certificate, a duplicate certificate may be issued by the instructor who issued the original certificate, or, by an instructor of the sponsoring organization having adequate records to establish successful completion of the prescribed course, or by the department if verified by adequate records to establish successful completion of the prescribed course. An administrative fee of three dollars ($3) shall be charged for the issuance of a duplicate certificate, for the hunting license year commencing on July 1, 1990, and, for the following years as adjusted pursuant to Section 713.