The board gives preference to projects that contain the greatest levels of financial participation from nonprogram fund sources. The board shall consider twenty percent as the minimum partnership contribution, unless the board grants a special exception. The maximum amount of funding on a project from the freight mobility board shall be fifty million dollars. The board may allow the use of matching ratios greater than the original matching ratio on any phase of a project to facilitate project development, with the understanding that the total payments made by project completion shall not exceed the original matching ratio. The board allows other state funds to be considered part of the local matching funds, and port funds expended off of port property will be considered private funds.