National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

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Effective Date: 12/29/2002, Docket: RP03-159-000, Status: Effective

Third Revised Sheet No. 403 Third Revised Sheet No. 403 : Effective

Superseding: Second Revised Sheet No. 403

GENERAL TERMS AND CONDITIONS

16. CURTAILMENT (Cont'd)

16.1 Curtailment of Transportation Capacity (Cont'd)

(vi) sixth, to quantities scheduled pursuant to Subsection 3.2 of

the IR-1 or IR-2 Rate Schedule;

(vii) seventh, to interruptible and overrun services subject to

service agreements specifying a discounted rate, beginning

with the service(s) subject to the largest discount(s), and

proceeding in reverse order according to the amount of the

discount(s), capacity to be allocated pro-rata among equally

discounted services;

(viii) eighth, to remaining quantities scheduled pursuant to the IT

Rate Schedule and overrun services;

(ix) ninth, to quantities scheduled within contract quantities at

secondary receipt or delivery points described at Section 2.4

of the FT, EFT and FT-S Rate Schedules, or Section 2.5 of the

FST Rate Schedule, except as provided in Subsection 16.1(x);

(x) tenth to quantities scheduled within contract quantities for

FT or FT-S Shippers at secondary receipt or delivery points

located within Shipper's transportation path where the

direction of the scheduled gas flow is the same as the

direction of gas flowing from the primary receipt point(s) to

the primary delivery point(s);

(xi) eleventh, to mandatory return quantities as described in

Section 2.5 of the IAS, IR-1, or IR-2 Rate Schedule; and

(xii) last, to quantities scheduled within contract quantities for

each shipper pursuant to the SS-1, SS-2, FT, FST, EFT, or

FT-S Rate Schedules, or other firm transportation rate

schedules.

Unless otherwise provided above, available capacity will be

allocated to scheduled receipt and deliveries within a category

for purpose of this Subsection in proportion to the quantities

scheduled by Transporter.

16.2 Curtailment of Storage Injection and Withdrawal Capacity

If, on any day, Transporter determines that the storage injection

or withdrawal capacity of its system, or any portion thereof,

is insufficient to serve all injections or withdrawal