REVISIONS IN SCOPE OF SERVICES. By written notice or order, AUTHORITY may, from time to time, order work suspension or make changes to this Agreement. The facilities to be maintained under this Agreementas listed in Attachment A, Scope of Services may be increased or decreased during the term of the Agreement at the Authority’s discretion. If and when this occurs, the Scope of Services and Cost Schedules will be adjusted accordingly, and changes in the Work shall be incorporated into an amendment to this Agreement. Upon execution of an amendment, CONTRACTOR shall perform the Work, as amended.