The director of Washington state ferries is delegated authority to administer the provisions of chapter 133, Laws of 1981 and chapter 468-310 WAC. The director of Washington state ferries is delegated authority to exercise all powers vested in the secretary of transportation by WAC 468-10-234 relating to the adoption of a final order granting, denying or revoking a prequalification certificate pursuant to chapter 133, Laws of 1983. The director of Washington state ferries may further subdelegate authority to exercise all powers vested in the secretary of transportation by WAC 468-10-234. A person to whom such authority is subdelegated shall be deemed to be the designee of the secretary of transportation as that term is used in WAC 468-10-234.