Northern Natural Gas Company                                      Substitute 11 Revised Sheet No. 289
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Tenth Revised Sheet No. 289

                                GENERAL TERMS AND CONDITIONS

         b.  The Acquiring Shipper does not agree to pay the lower of (a) the Releasing Shipper's
             contract rate, or (b) the maximum tariff rate  for the service for the remainder of
             the Acquiring Shipper's contract. However, in the event that the Releasing Shipper is
             paying Northern a contract rate above the maximum tariff rate because such a rate was
             needed to justify the economics of a capital project, and the Acquiring Shipper
             agreed to pay the Releasing Shipper a rate above the maximum tariff rate, then
             Northern may terminate the Acquiring Shipper's contract if the Acquiring Shipper does
             not agree to continue to pay the rate it agreed to pay the Releasing Shipper.

         c.  Northern shall notify the Releasing and Acquiring Shipper simultaneously upon
             determining that the Releasing Shipper is in default.

         d.  Northern may simultaneously provide written notices to the Releasing Shipper
             that its contract will be terminated and to the Acquiring Shipper of the rate it must
             agree to pay in order to retain the capacity.

         e.  In no event will the rate charged the Acquiring Shipper be higher than the rate
             charged the Releasing Shipper.

    (ii) For Non-Payment by Acquiring Shipper.  If the Acquiring Shipper does not make full
         payment of all amounts billed to it by Northern within ten (10) days of the date of
         invoice, Northern shall notify the Acquiring Shipper in writing, and copy the Releasing
         Shipper, advising that if default continues for a thirty (30) day period from such
         invoice date, the Service Agreement may be terminated; provided, however, Acquiring
         Shipper may avoid termination by providing Northern with good and sufficient indemnity
         bond.  If Acquiring Shipper fails to remedy non-payment within such thirty (30) day
         period, the Service Agreement between Northern and the Acquiring Shipper may be
         terminated, and the Releasing Shipper shall immediately be able to again release such
         capacity.

  (iii)  Due to Lack of Creditworthiness.  Northern may elect to terminate an Acquiring Shipper's
         service agreement upon 30 days written notice of such termination to an Acquiring
         Shipper, under the following conditions:

         a.  The Releasing Shipper has failed to maintain creditworthiness and has been provided
             written notice that its contract will be terminated in accordance with Section 46 of
             the GENERAL TERMS AND CONDITIONS of this tariff; and

         b.  The Acquiring Shipper does not agree to pay the lower of (a) the Releasing Shipper's
             contract rate, or (b) the maximum tariff rate for the service for the remainder of
             the Acquiring Shipper's contract. However, in the event that the Releasing Shipper is
             paying Northern a contract rate above the maximum tariff rate because such a rate was
             needed to justify the economics of a capital project, and the Acquiring Shipper
             agreed to pay the Releasing Shipper a rate above the maximum tariff rate, then
             Northern may terminate the Acquiring Shipper's contract if the Acquiring Shipper does
             not agree to continue to pay the rate it agreed to pay the Releasing Shipper.

         c.  Northern shall notify the Releasing and Acquiring Shipper simultaneously upon
             determining that the Acquiring Shipper is not creditworthy.

         d.  Northern may simultaneously provide written notices to the Releasing Shipper that its
             contract will be terminated and to the Acquiring Shipper of the rate it must agree to
             pay in order to retain the capacity.

         e.  In no event will the rate charged the Acquiring Shipper be higher than the rate
             charged the Releasing Shipper.
M.  Tiers.
    Any capacity released temporarily must retain its tier identification (TF12 or TF5), if
    applicable.  Realignment of TF5 and TF12 quantities are permitted for permanent
    releases, provided no violation of either the Releasing or Acquiring Shipper's
    limitation on TF5 capacity of thirty percent (30%) or the grandfathered percentage,
    whichever is greater, unless the system's TF5 capacity in the aggregate remains at
    thirty percent (30%).

N.  Reserved for future use.
Issued by: Mary Kay Miller, V.P. Regulatory & Government Affairs
Issued on: March 20, 2009                                               Effective: February 21, 2009
Filed to comply with order of the Federal Energy Regulatory Commission,
Docket No. RP09-233-000, issued February 20, 2009, 126 FERC 61,155