Administrative fees may be charged at the time of application as determined from time to time by resolution of the Mayor and Common Council. Said fees shall be commensurate with those costs incurred in the processing, review and evaluation of a permit application for development in the floodplain district. Such costs may include but are not limited to consultant fees for certification of the as-built condition of structures, floodplain delineations, environmental impact characterizations, staff assignments, attorneys' fees and other related costs. In that connection, the City may engage and/or hire agents, consultants, registered engineers, attorneys and others with regard to the requirements of this chapter and may assess the charges and expenses associated therewith to the applicant as a part of the administrative fees.