NORTHERN NATURAL GAS COMPANY                                              Sixth Revised Sheet No. 132
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Fifth Revised Sheet No. 132

                                            RATE SCHEDULE TI
                                    Interruptible Throughput Service

                        In addition to the daily quantities delivered, prior to the
                        beginning of each calendar month Shipper shall elect to either:

                    (1) provide the appropriate Fuel; or

                    (2) purchase the appropriate Fuel from Northern.

                        The scheduling priority for Fuel shall be the same priority as
                        the respective volumes scheduled to flow.  The overall Fuel
                        and unaccounted for Fuel percentages are set forth on Sheet No. 54,
                        and detailed by receipt-to-delivery MID path on Sheet Nos. 61-64 of
                        this Tariff.

                        A Shipper's fuel and unaccounted for is determined by multiplying the
                        volumes at the receipt point by the applicable receipt-to-delivery
                        MID path rate as shown on Sheet Nos. 61-64.  If the Shipper receipt
                        point is a mainline fuel point, the applicable fuel rate is the "ML
                        Fuel" rate from the MIDs matrix.  If the Shipper's receipt point is a
                        field fuel point, the applicable fuel rate is the "TOTAL" rate from
                        the MIDs matrix.

                        Electric Compression
                        --------------------

                        In addition, Shipper shall pay the applicable Market Area and Field
                        Area electric compression commodity rate, as shown on Sheet No. 54 of
                        this Tariff, pursuant to Section 53B of the General Terms and
                        Conditions of this Tariff.

                (e)  Daily Delivery Variance Charge (DDVC)
                     -------------------------------------

                     Shipper shall pay the applicable Daily Delivery Variance charges
                     pursuant to Section 48 of the GENERAL TERMS AND CONDITIONS of this
                     Tariff.


 




















Issued by: Mary Kay Miller, V. P. Rates and Certificates
Issued on: April 16, 1999                                                    Effective: June 1, 1999