There is imposed on, and shall be paid by, all Persons occupying space in the terminal Building at the Airport exclusively for their own Business purposes (except Aircraft operations coming within the provisions of Article 30) and not having other contractual arrangements with the County, a rate or charge per square foot of such space, which rate or charge is enumerated in the document entitled “Airport Fees And Charges” as published by the Director of Aviation, and as the same shall be modified from time to time by the Board of County Commissioners within its sole discretion. (§ 10.16.080 repealed reenacted Ord. 028-05)