Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 11/01/1993, Docket: RS92- 8-004, Status: Effective

Original Sheet No. 483 Original Sheet No. 483 : Effective

OPERATIONAL BALANCING AGREEMENT

Page 5 of 7

upon forty-eight (48) hours prior written notice. Any remaining

Imbalance shall be corrected within thirty (30) days after the

final Imbalance is agreed to in writing by the parties or within

such longer period of time agreed to by the parties.

7. Other Provisions: (To be applied in a non-discriminatory

manner).

The parties' signatures below will evidence their agreement to

this Operational Balancing Agreement.

Accepted and agreed to this ________ day of _________, _____.

NORTHERN NATURAL GAS COMPANY

By: ________________________________

Title: _____________________________

Accepted and Agreed to This _______ Day of ________, _______

By:_________________________________

Title: _____________________________