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First Revised Sheet No. 120 First Revised Sheet No. 120 : Superseded

Superseding: Sub. Original Sheet No. 120

ISS RATE SCHEDULE

Interruptible Storage Service

3. RATE (Cont'd)

3.3 During receipt and injection of gas hereunder, Transporter will

retain a quantity of gas equal to the product obtained by multiply-

ing the quantity of gas received by Transporter for injection under

this ISS Rate Schedule by the percentage set forth on Sheet No. 6

as "surface operating allowance."

3.4 During withdrawal of gas hereunder, Transporter will retain a

quantity of gas equal to the product obtained by multiplying the

quantity of gas withdrawn by the percentage set forth on Sheet No.

6 as "surface operating allowance."

3.5 Except as provided by valid rule or regulation, Transporter 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

rate or retaining an allowance less than the allowance specified

for service under this Rate Schedule as set forth on Sheet No. 6.

4. MINIMUM MONTHLY BILL

None.

5. STORAGE FIELD LOSSES

In the event of a loss of gas from one or more storage fields utilized

by Transporter resulting from force majeure, such loss shall be

allocated among Transporter and each Shipper receiving service under

FSS, SS-1, SS-2, ESS or ISS Rate Schedule in proportion to the quanti-

ties of gas (excluding base gas) of each in storage immediately prior

thereto as reasonably determined by Transporter, and if such extraordi-

nary loss exceeds the top gas balances of Transporter and all such

Shippers, such excess will be deemed from Transporter's base gas.

Losses of gas from storage fields utilized by Transporter that are not

losses resulting