A.   Charge Established: Any person issuing a check for payment of any City claim or service shall be liable to the City for a returned unpaid check processing charge in an amount established by the Finance Director, if the check is returned unpaid by the financial institution on which it is drawn.
   B.   Basis For Charge: The Finance Director shall determine the amount of such charge based on the City's actual cost of handling returned unpaid checks and/or by the prevailing rate charged by Enid businesses.
   C.   Charge Added To Debt: Any returned unpaid check processing charge imposed by the City shall increase the amount and become a part of the principal debt. (1994 Code § 2-5)