Northern Natural Gas Company                                             Fourth Revised Sheet No. 408
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Third Revised Sheet No. 408

(Placement on page, number of pages, format, capitalization and font my vary)

                                                       Contract No.:_________
                                                       Request No.:_________
                                                       Amendment No.: _______[if applicable]
Appendix A
Segmented Firm Throughput Service Agreement
TFX Rate Schedule

Shipper: _______________

Term:    _______________through______________

Contract Volumes (Dth):
_______________________________________________________________________________________________

                                      [Volume]

                               MARKET ________ [Month From] ________ [Month To] ________
                                               [Month From] ________ [Month To] ________

_______________________________________________________________________________________________

Maximum Daily Quantities (Dth):

    Volume Type         From              Volume
    ___________         ___________       __________
    ___________         ___________       __________
    ___________         ___________       __________
    ___________         ___________       __________

RECEIPT AND DELIVERY POINT DESCRIPTIONS AND VOLUMES (DTH) (may be organized by Area)

                                         ACCESS SEGMENT
                                         --------------
      R/D       POI #/MIDS  Point Description             Jan        Feb                Dec

                                                          [VOLUME]   [VOLUME]           [VOLUME]
      ______     _____      _________________             _______    _______   .......  _______
      R          _____      _________________             _______    _______   .......  _______
      R          _____      _________________             _______    _______   .......  _______
      R          _____      _________________             _______    _______   .......  _______

                            Total Receipts

      D          _____     MARKET AREA SEGMENTATION POINT _______    _______   .......  _______

                           TOTAL DELIVERIES               _______    _______


                                         DELIVERY SEGMENT
                                         ----------------

      R/D       POI #/MIDS  Point Description             Jan        Feb                Dec

                                                          [VOLUME]   [VOLUME]           [VOLUME]

      R          _____     MARKET AREA SEGMENTATION POINT ______    _______   .......   _______

                           Total Receipts

      ______     _____     _________________             _______    _______   .......  _______
      D          _____     _________________             _______    _______   .......  _______
      D          _____     _________________             _______    _______   .......  _______
      D          _____     _________________             _______    _______   .......  _______

                           TOTAL DELIVERIES              _______    _______


                                                                       Page___of_______
Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: January 21, 2009                                             Effective: February 21, 2009