Modifications and change orders mutually agreed upon by the Parties that are not outside of the scope of work under the Continuing IWTAs and Subcontracts, such as changes in delivery schedule or destination, administrative changes and similar types of changes and modifications, shall be governed by the terms and conditions of the Continuing IWTAs or Subcontracts. For any new work, including work involving material changes in quantities or the nature of goods or services to be provided, that is not addressed in the previous sentence, the Parties may separately negotiate purchase orders not subject to this Agreement.