National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

Effective Date: 01/01/2002, Docket: RP00-399-004, Status: Effective

Second Revised Sheet No. 388 Second Revised Sheet No. 388 : Effective

Superseding: First Revised Sheet No. 388

GENERAL TERMS AND CONDITIONS

14. ALLOCATION AND IMBALANCES (Cont'd.)

Imbalances of Shippers electing to resolve imbalances in kind, and

imbalances of other Shippers which have not been cashed-out, may

be resolved in one of the following ways:

(a) Shipper Imbalance Exchange. Shippers who agree to all the

terms of Transporter's Imbalance Exchange, and so indicate on

their Imbalance Resolution Methodology Form, will be allowed

to exchange imbalances with other such Shippers on the Shipper

Imbalance Exchange. Transporter will post a participating

Shipper's imbalance information on the Shipper Imbalance

Exchange portion of Transporter's Web Site or, upon receipt of

a written request, will make the information available to a

participant in written form. Transporter will have applicable

information posted by the tenth business day of the month

following the activity month. Shippers desiring to trade

imbalances must present Transporter with a request for

transfer (via E-mail or in writing). A request must be

received by Transporter from all Shippers involved in an

imbalance exchange, either via Transporter's E-mail or

otherwise in writing. No Shipper may accumulate balances for

the purpose of resolving other Shippers' imbalances. For

purposes of determining the applicable Transportation

Balancing Fee under Section 14.8 of these General Terms and

Conditions for the activity month, Imbalance Penalty under

Section 14.8 with respect to certain days within the activity

month, or the quantities subject to cash-out under Section

14.10 thereof, imbalance trades that are evidenced by requests

received by Transporter on or before the end of the calendar

month following the activity month shall be recognized in the

calculation of the Cumulative Monthly Imbalance for the

activity month, and the Daily Shipper Imbalance for any days

within the activity month. In order to avoid the imposition

of an Imbalance Penalty that would otherwise apply pursuant to

Section 14.8 with respect to a Daily Shipper Imbalance,

Shipper must trade its Daily Shipper Imbalance with another

Shipper or other Shippers which in combination have an

offsetting Daily Shipper Imbalance (i.e., positive if the

Shipper's Daily Shipper Imbalance is negative, or negative if

the Shipper's Daily Shipper Imbalance is positive) with

respect to the same day.

(b) Schedule Imbalance Payback/Relief. A Shipper may elect to

schedule full or partial imbalance payback/relief.