Northern Natural Gas Company                                            Seventh Revised Sheet No. 103
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Sixth Revised Sheet No. 103

                                     RATE SCHEDULE TF
                                 Firm Throughput Services


                   (3)  Deletion of Original Primary Delivery Points.  If an original primary
                        delivery point is deleted through an amendment, the capacity at that
                        original primary point will not be held for that Shipper.

               b)  Alternate Firm Delivery Points.

                   (1)  Flexibility.  All delivery points on the system will be available for
                        use as alternate firm delivery points (including zone deliveries to a
                        specific customer) within the area provided by the contract and subject
                        to operational conditions.  A Shipper may not have delivery point
                        flexibility between the Market Area and the Field Area (or vice versa)
                        unless the Shipper has a combined Field Area/Market Area contract.

                   (2)  Discounts.  Any discount granted (reservation or commodity) at the
                        primary delivery point will not be automatically granted at the
                        alternate delivery point.

          Northern shall have the right to interrupt or curtail service under this Rate
          Schedule TF as a result of a force majeure event as defined in Section 10, "Force
          Majeure" of the GENERAL TERMS AND CONDITIONS of this Tariff, or in accordance with
          Section 19, "Limitation of Northern's Obligation to Provide Firm Services" of the
          GENERAL TERMS AND CONDITIONS of the Tariff.  Curtailment shall be in accordance with
          Section 29, "Allocation of Capacity" of the GENERAL TERMS AND CONDITIONS.

          3.  THROUGHPUT SERVICES OFFERED.
              ----------------------------

               The Throughput Service(s) available under Rate Schedule TF are as follows:

               TF12 Base is a Firm Throughput Service available for twelve (12) consecutive
               months.  The TF12 Base MDQ is determined as provided in Section 8 of this Rate
               Schedule TF.

               TF12 Variable is a Firm Throughput Service available for twelve (12) consecutive
               months.  The TF12 Variable MDQ is determined as provided in Section 8 of this
               Rate Schedule TF.

               TF5 is a Firm Throughput Service available during the consecutive months of
               November, December, January, February and March.

               TFF is a Firm Throughput Service available for twelve (12) consecutive months
               for receipt in the Field Area and delivery to the F/M Demarcation Point.

               Although a TF agreement may contain one or more of these services, each service
               (TF12 Base, TF12 Variable, TF5 and TFF) is distinct for purposes of rates.

          4.  OVERRUN
              -------
              Overrun Volumes.  Northern agrees to transport volumes in excess of the Total
              Aggregate MDQ contracted for ("Overrun Volumes") on an interruptible basis for
              Shipper in accordance with the terms and conditions of this Rate Schedule and the
              GENERAL TERMS





Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: March 17, 2010                                                  Effective: April 17, 2010