Northern Natural Gas Company                                             Fourth Revised Sheet No. 432
FERC Gas Tariff                                                                           Superseding
Fifth Revised Volume No. 1                                                Third Revised Sheet No. 432

[Company
Logo]


                                      POWERPAK ADDENDUM
                                              TO
                           (TF/TFX/TI) THROUGHPUT SERVICE AGREEMENT


Related Throughput Service Agreement, Contract No. ___________

Related Deferred Delivery Service Agreement, Contract No._________

[when applicable] Transaction No.:____________

Term: __________through____________


Unit Rate: ______________/DTH.  All rates will be set forth in the applicable service
agreements for the term of the PowerPak option.  The unit rate includes any applicable Annual
Charge Adjustment.  In addition, Shipper shall provide fuel use and unaccounted for in
accordance with Northern's FERC Gas Tariff.


[If applicable] In order to receive the rate stated above, Shipper shall (i) deliver volumes
on its Related Throughput Service Agreement from the receipt point(s) to the delivery
point(s) listed in the Related Deferred Delivery Service Agreement, (ii) withdraw volumes on
its Related Deferred Delivery Service Agreement, and (iii) transport the same volumes on its
Related Throughput Service Agreement to the delivery point(s).


All other terms and conditions of the respective service agreements are applicable.

NORTHERN NATURAL GAS COMPANY         [SHIPPER]

By:_______________________________   By:________________________________

Title:_____________________________  Title:______________________________

Date:______________________________  Date:_______________________________
 




















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