Northern Natural Gas Company                                             Fourth Revised Sheet No. 216
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Third Revised Sheet No. 216

                                GENERAL TERMS AND CONDITIONS

              Prior period adjustment time limits will be 6 months from the date of the
              initial transportation invoice and 7 months from date of initial sales
              invoice with a 3-month rebuttal period, excluding government-required rate
              changes.  This provision shall not apply in the case of deliberate
              omission or misrepresentation or mutual mistake of fact.  Parties' other
              statutory or contractual rights shall not otherwise be diminished by this
              provision.

              Should Shipper fail to pay part or all of the amount of any billing for
              services rendered or for any other charges hereunder, Northern may impose
              interest at the then effective Refund Interest Rate pursuant to the
              Commission's Regulations, from the due date until date of payment.  If
              such failure to pay continues, Northern, in addition to any other remedy
              it may have, may suspend or terminate service hereunder after implementing
              a notification procedure in accordance with Section 16 of the General
              Terms and Conditions.

              If the invoice is in dispute, Shipper shall pay the portion not in dispute
              and provide documentation identifying the basis for the dispute, and at
              any time thereafter within twenty (20) days of a demand made by Northern
              for the balance furnishes a good and sufficient surety bond in amount and
              with sureties satisfactory to Northern, conditioned upon the payment of
              any amounts ultimately found due upon such billing after a final
              determination, which may be reached either by agreement or judicial or
              administrative proceeding, as the case may be, then Northern shall not be
              entitled to suspend or terminate service pursuant to this provision as a
              result of said dispute unless and until default is made in the conditions
              of such bond.


               9.  GROUP BILLING
                   -------------

                   For the purposes of billing, a Point of Delivery in a specific
                   service agreement may be defined as a group of physical delivery
                   points to the same, or affiliated, LDCs in the Market Area or Argus
                   Zone in the Field Area, including municipally owned/cooperative
                   distribution companies, where such delivery points are located in a
                   single Operational Zone.

                   For purposes of this Section 9, "Affiliated" LDCs are local
                   distribution companies, including municipalities,  (1) which are
                   divisions of the same corporation, (2) have a common parent company
                   which owns 100% of the voting stock of the LDCs (either directly or
                   through another wholly owned subsidiary, (3) wherein one LDC owns
                   100% of the voting stock of the other company(ies) (either directly
                   or through another wholly owned subsidiary), or (4) which are
                   organized as a gas purchasing authority or similarly-structured
                   group, subject to Northern's reasonable approval.










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