All counties possessing current ferry franchise(s) shall submit to the state aid office of the department an application for certification of toll changes at least sixty days before implementation of any changes in tolls and charges for its route(s). Application shall be made on a form obtainable upon request from the department. The county shall include with its application:

(1) Schedules of both existing and proposed tolls and charges; and

(2) A certification that the proposed tolls and charges are consistent with the requirements of RCW 47.04.140(2) and 23 U.S.C. §129.