National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

Effective Date: 09/30/2006, Docket: RP06-291-000, Status: Effective

First Revised Sheet No. 808A First Revised Sheet No. 808A : Effective

Superseding: 2nd Sub. Original Sheet No. 808A

FORM OF SERVICE AGREEMENT

(IAS Service)

ARTICLE II (Cont'd)

In the event that Transporter places on file with the Federal Energy

Regulatory Commission ("Commission") another rate schedule which may be

applicable to advance service rendered hereunder, then Transporter, at its

option, may from and after the effective date of such rate schedule, utilize

such rate schedule in performance of this Agreement. Such a rate schedule(s)

or superseding rate schedule(s) and any revisions thereof which shall be

filed and become effective shall apply to and be a part of this Agreement.

Transporter shall have the right to propose, file and make effective with the

Commission, or other body having jurisdiction, changes and revisions of any

effective rate schedule(s), or to propose, file, and make effective

superseding rate schedules, for the purpose of changing the rate, charges,

and other provisions thereof effective as to Shipper.