Gas Transmission Northwest Corporation
FERC Gas Tariff
Third Revised Volume No. 1-A

First Revised Sheet No. 1
Superseding
Original Sheet No. 1

                               TABLE OF CONTENTS


  Third Revised Volume No. 1-A                                    Sheet No.


  Preliminary Statement                                                2


  Map                                                                  3


  Statement of Effective Rates and Charges for
    Transportation of Natural Gas                                      4


   Rate Schedules:

       FTS-1         Firm Transportation Service                      30

       LFS-1         Limited Firm Transportation Service              45

       ITS-1         Interruptible Transportation Service             60

       USS-1         Unbundled Sales Service                          65

       PS-1          Parking Service                                  67

       AIS-1         Authorized Imbalance Service                     71

  Transportation General Terms and Conditions                        100

  Form of Service Agreements:

       FTS-1         Firm Transportation Service                     250

                     Electronic Signature for
                       Capacity Release                              259

       ITS-1         Interruptible Transportation Service            270

       PS-1          Parking Service                                 280

       AIS-1         Authorized Imbalance Service                    290

       LFS-1         Limited Firm Transportation Service             320

Issued by: John A Roscher, Director of Rates & Regulatory Affairs
Issued on: August 4, 2004                     Effective on: September 3, 2004