Viking Gas Transmission Company

Original Volume No. 1

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Effective Date: 06/01/1991, Docket: GT91- 25-000, Status: Effective

Third Revised Sheet No. 81D Third Revised Sheet No. 81D : Superseded

Superseding: First Revised Sheet No. 81D

GENERAL TERMS AND CONDITIONS (Continued)

(c) In the absence of methodology as described in (3)(a) or (b), Seller shall allocate

quantities across all services nominated and confirmed between Seller and operator, in

the following order: first, quantities of gas scheduled under Seller's transportation

rate schedules, according to the scheduling sequence set forth in Section 5 below, and

second, quantities of gas scheduled under Seller's sales rate schedules; provided,

however, that the actual metered volumes received by seller at a Receipt Point or

delivered by Seller at a Delivery Point shall be allocated among interruptible

transportation services in accordance with confirmed nominations.

4. Scheduling and Allocation

(a) Initial Service: For purposes of scheduling commencement of transportation service,

five business days prior to the beginning of the month in which service is requested

to commence, or such lesser period of time mutually agreed upon by Buyer and Seller,

Buyer will provide Seller a completed Customer Nomination Form as set forth

beginning at Tariff Sheet No. 167. The completed Customer Nomination Form shall be

provided to:

Operations Coordinations

Viking Gas Transmission Company

P.O. Box 2511

Houston, Texas 77252

Telefax: (713) 757-5494

No transportation service will commence unless or until Seller has received the

completed Customer Nomination Form and the Buyer has been advised by Seller's gas

dispatcher that the service may commence. Commencement of service will occur at the

beginning of a day unless otherwise mutually agreed by Buyer and Seller.

(b) Change in Service: For purposes of scheduling any change in transportation service,

Buyer will provide a completed Customer Nomination Form indicating the changes

requested to be made to the service and the date the revised service is requested to

commence.

For changes proposed to be effective at the beginning of the month, the completed

Customer Nomination Form must be received at least five business days prior to the

beginning of that month, unless a lesser period of time is mutually agreed upon by

Buyer and Seller. For all other changes, the Customer Nomination Form must be

received by 9:00 a.m. Houston time of the day prior to the requested day of

commencement of the revised service, unless a lesser period of time is mutually

agreed upon by Seller and Buyer. Except in the instances of a force majeure

condition as defined in Article X of the General Terms and Conditions, no change in

service will commence unless or until Seller has received the completed Customer

Nomination Form and the