If any fee required to be paid to the Agency pursuant to this title is not paid at the time and in the manner provided in § 14.08.070, the same shall automatically become delinquent 30 days after the due date of the required payment, and a penalty in an amount equal to 10% of such fee shall be added thereto each month of the period of delinquency, which penalty shall become a part of such fee and shall be enforced and collected as a part of such fee. In no event shall such delinquency penalty exceed 100% of the amount of the fee due.
(`78 Code, § 14.08.080.)