The final subdivision plat shall be filed by the applicant with the County Recording Officer within ninety-five (95) days from date of approval. No approved plat shall be accepted for filing by the County Recording Officer unless it has been duly approved by the Borough Planning Board and the County Planning Board (or Acting Chairman and Acting Secretary) and the County Planning Director or his representative. In the event of a failure to file within the ninety-five (95) days, the approval of the major subdivision shall expire, and any further proceedings shall require the filing of a new plat. The Board of Commissioners, for good cause shown, may extend the time for filing for an additional time period not to exceed ninety-five (95) days. If approval has expired, a final plat may be resubmitted to the Planning Board if it is done so within three (3) years of the date of preliminary plat approval. The applicant must submit a sketch plat as in the first instance if three (3) years have elapsed since the date of preliminary plat approval.