FERC GAS TARIFF

                         THIRD REVISED VOLUME NO. 1-A

                                      OF

                    GAS TRANSMISSION NORTHWEST CORPORATION

                                FILED WITH THE

                     FEDERAL ENERGY REGULATORY COMMISSION






                     Communications Concerning This Tariff
                            Should Be Addressed To:


                        Joan Collins
                        Manager, Tariffs and Compliance
                        Gas Transmission Northwest Corporation
                        Mailing Address:  P.O. Box 2446
                                          Houston, TX 77252-2446
                        Courier Address:  717 Texas Street, Suite 2400
                                          Houston, TX 77002-2761
                        Phone:  (832) 320-5651
                        Fax:    (832) 320-6651