Consultant fees. The City may retain the services of professional consultants (including planners, engineers, architects, attorneys, environmental specialists, recreation specialists, and other experts) to assist in the City's review of a proposal coming before the Plan Commission and/or Common Council. The submittal of a development proposal application or petition shall be construed as an agreement to pay for such professional review services applicable to the proposal. The City may apply the charges for these services to the petitioner. The City may delay acceptance of the application or petition as complete, or may delay final approval of the proposal, until the petitioner pays such fees. Review fees which are applied to a petitioner, but which are not paid, may be assigned by the City as a special assessment to the subject property. The Petitioner shall be required to provide the City with an executed copy of a professional services reimbursement form as a prerequisite to the processing of the development application.