National Fuel Gas Supply Corporation

Fourth Revised Volume No. 1

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

First Revised Sheet No. 120 First Revised Sheet No. 120

Superseding: Original Sheet No. 120

ESS RATE SCHEDULE

Enhanced Storage Service

4. BILLING ADJUSTMENTS

If during the Injection Period Transporter is unable to inject into

storage quantities of gas nominated during such period by Shipper for

injection and made available to Transporter, then the Storage Demand

Charge and the Storage Capacity Charge shall be reduced in the

following manner:

If, at the end of the Injection Period, Shipper's Storage Gas Balance

is less than Shipper's Maximum Storage Quantity due solely to

Transporter's inability to inject gas within the limitations set forth

in this Rate Schedule, then the Storage Capacity Charge applicable for

the ensuing Withdrawal Period and Injection Period shall be that part

of the total Storage Capacity Charge herein provided which Shipper's

Storage Balance as of such date bears to Shipper's Storage Capacity.