Northern Natural Gas Company

Fifth Revised Volume No. 1

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Effective Date: 11/22/2003, Docket: RP03-398-004, Status: Effective

Original Sheet No. 228A Original Sheet No. 228A : Superseded

GENERAL TERMS AND CONDITIONS

2. Delivery Point Capacity Constraint

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a) In the event deliveries must be interrupted due to a Delivery Area Capacity

constraint, the smallest affected area at the delivery area will be localized and

curtailment will be effected in the following sequence:

(i) Interruptible throughput will be curtailed on the basis of the lowest TI price

first;

(ii) LFT service with Limited Days remaining for the month.

a. lowest price first;

b. greater number of Limited Days first;

c. pro rata.

(iii) Firm service, including LFT with no Limited Days remaining for the month, at

primary or alternate points will be curtailed pro rata.

(iv) Where there is a constraint at an interconnect, firm service, including LFT with

no Limited Days remaining for the month, will be curtailed pro rata.

b) Branchline - Affected Area

Notwithstanding the provisions in Section 19.C.2. (a) above, any curtailment

of deliveries below the total Firm Service MDQ contracted for on any day

will be effectuated by operational area on a uniform basis except as

provided below:

Northern shall have the right to curtail deliveries of gas in any area on

its system pursuant to the following: Northern shall determine the areas

of its system deemed to be "affected areas" in order to deal with

shortfalls in capacity and/or supply. Northern shall notify the Point Operator(s)

receiving gas at the delivery point(s) in the Affected Area(s).