It shall be the duty of the Zoning Officer, upon the filing of an application for a permit, to examine all of the data submitted to the Zoning Officer with the application, and if necessary, the building or premises upon which it is proposed to erect the sign or other advertising structure. If it shall appear that the proposed sign is in compliance with all of the requirements of this article, and other rules and regulations of the Hamlet, and has been approved as provided for herein, a permit for the erection of the proposed sign shall be issued. If the sign authorized under any such permit has not been completed within six months from the date of the issuance of such permit, the permit shall become null and void, but may be renewed for one additional six-month period upon the approval by the Planning Board and upon payment of an additional fee. A request which cites the reason for requesting the extension for the completion of the sign shall be submitted in writing to the Planning Board not more than 30 days following the first six-month expiration period.