Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 10/06/2003, Docket: RP04- 23-001, Status: Effective

First Revised Sheet No. 18 First Revised Sheet No. 18 : Effective

Superseding: Original Sheet No. 18

STATEMENT OF EFFECTIVE RATES AND CHARGES

FOR TRANSPORTATION OF NATURAL GAS

(Continued)

NEGOTIATED RATE AGREEMENTS UNDER RATE SCHEDULES FTS-1 AND LFS-1

Explanatory Footnotes for Negotiated Rates

under Rate Schedules FTS-1 and LFS-1

/7 The Reservation charge shall be equal to the rate set forth in GTN's FERC

Gas Tariff identified as FTS-1 E-2 (WWP), or its successor, multiplied by the

appropriate Effective Period Percentage as shown in the following table.

Effective Period Percentage

11/1/01-10/31/02 75%

11/1/02-10/31/03 80%

11/1/03-10/31/04 85%

11/1/04-10/31/05 90%

11/1/05-10/31/06 95%

11/1/06-10/31/25 100%

The Daily Delivery Charge shall be equal to the 100% load factor equivalent

of the FTS-1 E-2 rate, or its successor, and shall be multiplied by the

positive difference between (a) volumes delivered and (b) the contract MDQ

times the appropriate Effective Period Percentage.

Daily Delivery Charge = [Dth Delivered - (MDQ * Effective Period %)] * 100%

Load Factor Equivalent FTS-1 E-2

/8 Reserved