The Commission may hold hearings with any other state or local agency having jurisdiction to issue any permit, authority, or certificate that is required before construction or operation of a project can begin. In order to ensure timely completion of the proceedings, the Commission may impose a schedule of procedural dates which is subject to change only for good cause shown. Phased Proceeding Requests. The applicant may request that the construction of a generating station be reviewed by the Commission in phases. If a phased proceeding is requested and the request is granted by the Commission: An applicant may file a partial application; and The Commission may render separate findings of fact on any phase or issue within a phase. Findings of fact rendered by the Commission under this section are not subject to further litigation unless warranted by new substantive issues or changed circumstances.