Northern Natural Gas Company                                             Second Revised Sheet No. 108
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                First Revised Sheet No. 108





                                            RATE SCHEDULE TF
                                        Firm Throughput Services

                   (c)  Overrun and Out-of-Balance Charges
                        ----------------------------------

                        (i) Overrun Charge.  For Overrun Volumes transported, the monthly
                            billing shall be the sum of said overrun units transported
                            daily multiplied by the Overrun Rate shown on Sheet No. 53.

                       (ii) Out-of-Balance Charge.  The monthly billing shall be the
                            total units of Out-of-Balance Volumes transported to a
                            delivery point(s) during the respective  month multiplied by
                            the Out-of-Balance Rate as shown on Sheet No. 50 of this
                            Tariff, as applicable.

              Unless otherwise mutually agreed to by Northern and Shipper,
              all rates for service under (a), (b), and (c) above, of this
              Rate Schedule, shall be within the minimum and maximum levels shown on
              Sheet Nos. 50 and 53, respectively.  The rate(s) Shipper shall pay
              will be set forth in Shipper's Service Agreement, or otherwise agreed to in
              writing.  Northern will provide similar rates to similarly situated
              Shippers upon request.


































Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: December 1, 2004                                              Effective: February 1, 2005