Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 11/01/2001, Docket: RP01-382-006, Status: Effective

Fourth Revised Sheet No. 263B Fourth Revised Sheet No. 263B : Effective

Superseding: Third Revised Sheet No. 263B

GENERAL TERMS AND CONDITIONS

4. Flow Orders. Northern needs the ability to call on volumes to flow at Carlton.

The following operational requirements apply during the months of November

through March for each year that the Carlton Resolution is in effect to the

Carlton Supplier/Shippers, Sourcers and the Other Carlton Shippers Entitlement as

applicable.

An operational flow order is an order issued to alleviate conditions, inter alia,

which threaten or could threaten the safe operations or system integrity, of the

transportation service provider's system or to maintain operations required to

provide efficient and reliable firm service. Whenever a Transportation Service

Provider experiences these conditions, any pertinent order should be referred to

as an Operational Flow Order.