If more than one business is being conducted at a single address and more than one business license has been issued to the proprietor of a single business premises, the assessment for the downtown improvement district shall be levied set based on the business for which the highest assessment would be paid. (Ord. 2408 § 1, 1990; Ord. 1964 § 6, 1982; Ord. 1885 § 6, 1979; Ord. 1372 § 6, 1971).