National Fuel Gas Supply Corporation

Third Revised Volume No. 1

Effective Date: 04/01/1997, Docket: RP97-201-000, Status: Effective

First Revised Sheet No. 79 First Revised Sheet No. 79 : Superseded

Superseding: Original Sheet No. 79

IAS RATE SCHEDULE

INTERRUPTIBLE ADVANCE SERVICE

3. RATE

3.1 The maximum and minimum rates per Dth for service under this rate

schedule are set forth on the currently effective Sheet No. 6 of

this tariff, and these rates are incorporated herein by reference.

These rates shall be applicable to service hereunder, unless

Transporter and Shipper have agreed upon a negotiated rate pursuant

to Section 17.2 of the General Terms and Conditions of this Tariff.

3.2 For all service rendered under this rate schedule during each

month, Shipper shall pay Transporter:

(a) Advance Charge: A charge per Dth for all gas advanced by

Transporter during the billing month.

(b) Return Charge: A charge per Dth for all gas returned to

Transporter during the billing month.

balance. The usage charge shall be applied on a daily basis.

The Shipper's "advanced gas balance" shall be the highest

aggregate quantity of Transporter's gas on advance to Shipper

hereunder during a day.

(d) An amount to reimburse Transporter for the costs of any

facilities installed by Transporter to receive or deliver

natural gas for the account of Shipper.

3.3 Except as provided by valid Commission rule or regulation, Trans-

porter is not obligated to offer to transport or transport gas at

any rates or allowances less than the maximum rates and allowances

specified for this rate schedule on Sheet No. 6; however, nothing

precludes Transporter from charging a rate between the maximum and

minimum rates or retaining an allowance less than the maximum

allowance for this service under this Rate Schedule set forth on

Sheet No. 6.

4. MINIMUM MONTHLY BILL

None.