National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

Effective Date: 04/21/2010, Docket: RP10-504-000, Status: Effective

First Revised Sheet No. 117 First Revised Sheet No. 117

Superseding: Original Sheet No. 117

ESS RATE SCHEDULE

Enhanced Storage Service

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

When Shipper's Storage Transporter's Obligation to

Balance is: Withdraw gas is limited to:

greater than 30% of MSQ 100% of the MDWQ

greater than 20% of MSQ

but less than or equal

to 30% of MSQ 90% of the MDWQ

greater than 10% of MSQ

but less than or equal

to 20% of MSQ 80% of the MDWQ

greater than 0% of MSQ

but less than or equal

to 10% of MSQ 70% of the MDWQ

In addition to the limitations set forth above, on any days

during the Withdrawal Period on or after March 1st on which

Shipper's Storage Balance is greater than thirty percent (30%) of

its MSQ, Transporter's obligation to withdraw gas shall be

limited to ninety percent (90%) of the MDWQ.

2.12 An ESS Shipper must reduce its Storage Balance to thirty percent

(30%) of its MSQ by March 31st of each Withdrawal Period. If

Shipper does not reduce its Storage Balance to such level, any

excess shall be considered an "Excess Storage Balance" for

purposes of Section 3 hereof.

3. RATE

3.1 The maximum and minimum rates for service hereunder are set forth

on the currently effective Sheet No. 10 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.