Northern Natural Gas Company

Fifth Revised Volume No. 1

Effective Date: 12/31/9999, Docket: RP07-330-000, Status: Accepted

First Revised Sheet No. 431A First Revised Sheet No. 431A : Pending

Superseding: Original Sheet No. 431A

Interruptible Throughput Service Agreement

Rate Schedule TI

Any notice, statement, or bill provided for in this Agreement shall be in writing and

shall be considered as having been given if delivered personally, or if mailed by United

States mail, postage prepaid, or if sent by express mail, overnight delivery, telex,

telecopy or other mutually agreeable means of electronic transmission, to Shipper when sent

to the address set forth on this Agreement and to Northern when sent to the following:

All Notices/Accounting Matters: Payments to Designated Depository:

Northern Natural Gas Company Northern Natural Gas Company

Address:______________ Account No. ________________

______________________ ABA No. ____________________

Attn:_________________ Bank:_______________________

FAX No._______________

This Agreement shall incorporate and in all respects shall be subject to the GENERAL

TERMS AND CONDITIONS and the applicable Rate Schedule(s) set forth in Northern's FERC Gas

Tariff, as may be revised from time to time. Northern may file and seek Commission

approval under Section 4 of the Natural Gas Act (NGA) at any time and from time to time to

change any rates, charges or other provisions set forth in the applicable Rate Schedule(s)

and the GENERAL TERMS AND CONDITIONS in Northern's FERC Gas Tariff, and Northern shall have

the right to place such changes in effect in accordance with the NGA, and this Throughput

Service Agreement shall be deemed to include such changes and any changes which become

effective by operation of law and Commission Order, without prejudice to Shipper's right to

protest the same.

Northern Natural Gas Company Shipper

By:_______________________________ By:________________________________

Title:_____________________________ Title:_______________________________

Date:______________________________ Date:_______________________________