All or any portion of the annual costs of maintaining any public improvement by a maintenance benefit area formed under this chapter may be charged to the owners of the property specially benefited thereby by any of the following methods:
A. By a flat service fee for each parcel of property lying within the maintenance benefit area;
B. By a service fee fixed in proportion to the front footage of each parcel of property in the maintenance benefit area to the total front footage of all property within said area;
C. By a service fee fixed in proportion to the total area of each parcel of property within the maintenance benefit area to the total area of all property within said area;
D. By a service fee combining the methods described in subsections B and C of this section; or
E. By any other method other than the ad valorem tax or special tax, which the council finds in its resolution of intention to be an equitable manner of apportionment of said service fee among said owners.
Service fees may also be graduated under any of the above methods to reasonably reflect the different types of usage of the property to which additional maintenance service is provided, and may be adjusted to reflect a change in geographical boundary area. (Prior code § 55.04.401)