In addition to payment of applicable filing fees, each application for a rezoning, conditional use permit, planned development plan, or site plan shall, if deemed appropriate or necessary by the Director, shall also be submitted by the City for review by its consultants for planning, engineering, legal or other applicable review to determine conformance of such applications with City ordinances or other requirements. To the extent the City incurs actual costs from such review due to use of consultants, the applicant shall bear such reasonable costs. Unless other studies or additional review are contemplated, or unless such consultant review is waived by the Director, the applicant shall submit payment at the time of application of two thousand dollars ($2,000.00) to cover such expenses, unless such other amount as is reasonably estimated by the Director as required for review of the submission. In the event actual reasonable costs are or are expected to be in excess of this payment, the Director shall inform applicant of such costs and applicant shall provide payment. Any funds not used by the City for review purposes shall be refunded to the applicant. Payment for review services shall be paid by the applicant prior to formal review or processing by the City.