NORTHERN NATURAL GAS COMPANY                                             Fourth Revised Sheet No. 105
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Third Revised Sheet No. 105

                                      RATE SCHEDULE TF
                                  Firm Throughput Services

              B.   Northern and Shipper may agree to reduction rights.  If Northern and
                   Shipper are unable to agree, Shipper shall be entitled to the following:
                   In the event a "firm customer of Shipper" served by use of Shipper's firm
                   throughput entitlement on Northern arranges either directly or indirectly
                   through an upstream supplier for incremental firm service with Northern
                   for the remaining term of the Shipper's Service Agreement in lieu of
                   taking assignment from Shipper for such firm service, Northern agrees to
                   reduce Shipper's firm entitlement by an amount determined by Shipper that
                   is no greater than the level of contract demand of incremental firm
                   service arranged for with Northern by the "firm customer of Shipper"
                   (i.e., Northern is kept revenue neutral except to the extent Northern
                   discounts to the customer), provided however, Shipper must first submit
                   an affidavit to Northern verifying that such customer was being served by
                   use of Shipper's firm throughput entitlement on Northern.  Reductions by
                   Shipper will not be allowed if the "firm customer of Shipper" arranges
                   either directly or indirectly through an upstream supplier for a non-
                   incremental service (i.e., capacity release) on Northern or for
                   interruptible service (i.e., TI) on Northern.








































Issued by: Mary Kay Miller, V.P., Regulatory and Customer Service
Issued on: January 13, 2003                                             Effective: February 13, 2003