National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

Effective Date: 11/01/1998, Docket: RP98-416-000, Status: Effective

First Revised Sheet No. 172 First Revised Sheet No. 172 : Effective

Superseding: Original Sheet No. 172

IR-2 RATE SCHEDULE

Hub Service - Imbalance Resolution Schedule

2. APPLICABILITY AND CHARACTER OF SERVICE (Cont'd.)

to prevent Transporter from meeting all of its firm and

interruptible service obligations as an interstate pipeline,

including Transporter's system management needs. In the

event that service has already commenced and Transporter

learns that the continued furnishing of service may prevent

Transporter from meeting all of its firm and interruptible

service obligations as an interstate pipeline, then

Transporter may, at its sole discretion and upon giving

appropriate notice to Shipper(s), interrupt the continuation

of any or all of the services hereunder.

not similarly situated to non-Hub Shippers.

2.3 Service hereunder shall consist of (i) the advance of gas by

Transporter, up to the Maximum Advance Quantity (MAQ) specified

in the IR-2 Service Agreement, the delivery of such gas into

Transporter's transmission facilities at meter NFIRP, and (ii)

the acceptance into Transporter's transmission facilities at any

Hub Point of the quantity advanced by Transporter hereunder.

Shipper must arrange transportation under Transporter's EFT, FT,

FST, FT-S, IT or W-1 Rate Schedule to receive the advance of gas

nominated hereunder.

2.4 Shipper shall be required to return the quantity of gas advanced

by Transporter.

2.5 Shipper may nominate for the return of advanced gas at any time,

subject to Section 13 of the General Terms and Conditions of this

Tariff and Shipper having arranged for the transportation of the

gas and Transporter shall accept such gas to the extent it has

capacity to do so. The voluntary return of advanced gas

hereunder shall have a priority of service equal to service under

the IT Rate Schedule.

2.6 Shipper must return the quantities of gas specified in Section

2.3 hereof within forty eight (48) hours of receipt of notifi-

cation from Transporter.