Columbia Gulf Transmission Company

Second Revised Volume No. 1

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Effective Date: 03/05/2006, Docket: RP06-210-000, Status: Effective

Fourth Revised Sheet No. 220 Fourth Revised Sheet No. 220 : Effective

Superseding: Third Revised Sheet No. 220

GENERAL TERMS AND CONDITIONS (Continued)

20. DISCOUNTING

20.1 In General. Transporter may at any time in its sole discretion selectively discount the rate(s)

applicable to any individual Shipper under the Rate Schedules set forth in Volume No. 1 of this Tariff;

provided, however, that such discounted rate(s) shall not be less than the Minimum Rate(s) for the

applicable service as set forth in the currently-effective rate sheets of this Tariff. If Transporter

discounts any rate to any Shipper, Transporter shall file with the Commission any required reports

respecting such adjusted rate. Transporter and Shipper shall enter into a written agreement describing

the terms of any such discounting of Shipper's rate(s).

20.2 Apportionment of Discounts. For each transaction discounted pursuant to this provision, the

amount of the discount (the difference between the maximum rate otherwise applicable to the transaction

and the total rate to be billed) shall be apportioned among the components of the Base Tariff Rate.

20.3 Allocation or Interruption. To the extent that Transporter allocates or interrupts service rights

based upon price, as set forth in Section 7 (Capacity Allocation) and Section 16 (Interruptions of

Service) of the General Terms and Conditions, the price utilized by Transporter for such purposes, where

rates for service have been discounted by Transporter, shall be Shipper's discounted rate for the service.

20.4 Refunds. If the rates charged Shipper exceed the rates ultimately approved by the Commission, any

required refund shall be made based on the amount by which the rate actually collected from Shipper

exceeds the rate approved by the Commission.

Columbia Gulf Transmission Company Second Revised Sheet No. 220

FERC Gas Tariff Superseding

Second Revised Volume No. 1 First Revised Sheet No. 220

Issued by: Carl W. Levander, Vice President

Issued on: October 28, 2002 Effective: