Firm Service means from published tariffs and/or contracts under which Seller is expressly obligated to deliver specific volumes within a given time period and which anticipates no interruptions but which may permit unexpected interruption in case the supply to higher priority customers is threatened.
Transmission Service means Point-To-Point Transmission Service provided under Tariff, Part II on a firm and non-firm basis.
Invoice means a Contractor’s claim for payment. At the Agency’s discretion, claims may be submitted on an original invoice from the Contractor or may be submitted on a claim form acceptable to the Agency, such as a General Accounting Expenditure (GAX) form.