Northern Natural Gas Company                                             Fourth Revised Sheet No. 111
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Third Revised Sheet No. 111

                                    RATE SCHEDULE TF
                                Firm Throughput Services

      (i) PowerPak Option
          ---------------

          Shipper may elect to include a PowerPak Option with a service agreement
          under this Rate Schedule and service under one of Shipper's Deferred
          Delivery Service Agreements.  Each service shall be separately
          contracted, nominated, scheduled and/or curtailed in accordance with the
          GENERAL TERMS AND CONDITIONS of this tariff.  The PowerPak option can
          only be at points with EFM with real time communication for the location.
          The PowerPak Option shall apply to all volumes under the applicable
          service agreements or transaction.  The maximum rate shall be the maximum
          TF rate plus the maximum rate for the applicable Deferred Delivery
          Service. A Shipper will be charged separately stated transportation and
          deferred delivery rates. Northern and Shipper will agree to the specific
          volumetric parameters (such as maximum injections, withdrawals, and
          inventory limitation) as set forth in the applicable deferred delivery
          service agreement or transaction.  Shipper must execute a PowerPak
          addendum (as set forth on Sheet 432 herein as may be revised from time to
          time) to its throughput service agreement.  To the extent Northern and
          Shipper have agreed to a discounted rate and Shipper fails to deliver or
          receive volumes in accordance with the parameters, which shall be set
          forth in the related service agreements or transaction, the rate shall be
          the maximum rate applicable to both rate schedules.  Northern, on behalf
          of shipper, will schedule volumes to and from the storage account to
          minimize imbalances and delivery point variances.  This reconciliation
          shall take place daily during the last nomination cycle of the gas day.
          This reconciliation will be based on the information available to
          Northern.  Northern will not be responsible for any remaining imbalances
          or scheduling variances ultimately charged.  Shipper shall resolve any
          remaining imbalances in accordance with the tariff and shall pay any
          applicable DDVC charges.

    (j)   Other
          -----

          Any additional costs which may be properly billed in accordance with the
          provisions of this Rate Schedule and the GENERAL TERMS AND CONDITIONS.

 



















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