Northern Natural Gas Company                                              Sixth Revised Sheet No. 255
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Fifth Revised Sheet No. 255





                                      GENERAL TERMS AND CONDITIONS


                   o   Rate Schedule of the requested service.

                   o   Requested term of service. (For interruptible and MPS services
                       only the start date is needed.)

                   o   Contract quantity requested.

                   o   Point(s) of Receipt.

                   o   Point(s) of Delivery.

                   o   If firm service is requested, Shipper must specify the total
                       firm quantity attributable to all requested Point(s) of Receipt
                       and all Point(s) of Delivery.  If the Point of Delivery is an
                       Operational Zone, Shipper must additionally specify the firm
                       quantity attributable to each Town Border Station (TBS) included
                       in the Operational Zone.

                   Other Information:

                   o  Shipper's mailing address/e-mail addresses/telephone number.

                   o  Name /address/telephone number for agent and complete
                      agency designation.  [if applicable]

                   Additional Information for Specific Service Types:

                   TF Service -

                   o  MDQ for each Throughput Service(s) (TF12 Base, TF12 Variable, TF5
                      and TFF) and the Total Aggregate MDQ for the Market Area and
                      Field Area.

                   FDD Service -

                   o  Storage Option (i.e., GIP, 3-step, or 4-step).

                   o  Deferred delivery point for firm throughput service agreement and
                      throughput quantity to be increased or realigned.

                   SMS Service -

                   o  Corresponding Throughput Service Agreement Number.

                   PDD Service -

                   o  Requested storage parameters to complete the Appendix A.

                   MPS Service -

                   o  Pooling Points.



Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: May 11, 2007                                                     Effective: June 11, 2007