Arlington Storage Company, LLC

First Revised Volume No. 1

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Effective Date: 11/08/2009, Docket: RP10-67-000, Status: Effective

Original Sheet No. 42 Original Sheet No. 42

IHBS RATE SCHEDULE

INTERRUPTIBLE HOURLY BALANCING SERVICE

(Continued)

(b) The storage of Gas in amounts up to the Interruptible Maximum Storage Quantity,

as stated in Customer's executed Interruptible Hourly Balancing Service Agreement,

provided that all Firm Storage Service requests to utilize Storage Inventory have

been satisfied;

(c) The withdrawal from storage on any Day of Customer's Gas per Customer's nomination

up to the Maximum Daily Withdrawal Quantity ("MDWQ") as stated in Customer's executed

Interruptible Hourly Balancing Service Agreement and the delivery of such Gas to the

Point(s) of Delivery, provided that all Firm Storage Service nominations for withdrawal

have been satisfied and Customer has a quantity of Gas in Customer's Interruptible

Storage Inventory not less than the quantity Customer shall have nominated for

withdrawal on such Day; and

(d) For each hour during a Day, subject to the maximum hourly limit as set forth in

Customer's Interruptible Hourly Balancing Service Agreement, the receipt or delivery

by ASC at the Point(s) of Receipt/Delivery designated by Customer of hourly balancing

quantities of Gas which shall be the difference, on an hourly basis, between (i) the

injections to or withdrawals from ASC's storage of Gas as nominated by Customer to meet

Customer's desired hourly pattern of deliveries at its delivery point(s) on the

Transporter's (s') pipeline system(s) and (ii) Customer's ratable flow quantities on

ASC's system (1/24 of Daily nominated quantities); provided that all Firm Storage

Service nominations have been satisfied and that hourly balancing quantities shall not

cause Customer's Interruptible Storage Inventory to exceed the Maximum Storage Quantity

set forth in Customer's Interruptible Hourly Balancing Service Agreement or to be less

than zero (0).

(e) The injection of Gas into storage in amounts in excess of the Interruptible Maximum

Daily Injection Quantity on any Day (“Excess Injection Gas”), as stated in Customer’s

executed Interruptible Hourly Balancing Service Agreement, provided that Customer has

requested such excess injection service, nominated the Gas separately as excess service

and ASC has agreed to provide such excess service; and

(f) The withdrawal of Gas from storage in amounts in excess of Customer’s Interruptible

Maximum Daily Withdrawal Quantity on any Day (“Excess Withdrawal Gas”), as stated in

the executed Interruptible Hourly Balancing Service Agreement, provided that Customer

has requested such excess withdrawal service, nominated the Gas separately as excess

service and ASC has agreed to provide such excess service.

2.2 Hourly balancing quantities must be nominated and scheduled pursuant to this Rate

Schedule and Section 8 of the General Terms and Conditions of this FERC Gas Tariff. In addition to

the day-ahead and intraday nominations provided for in Section 8 of the General Terms and Conditions,

Customer shall be permitted to submit nominations for hourly balancing quantities, and to adjust its

hourly balancing quantity nominations within a Day by providing not less than one hour notice to ASC

before the start of an hour for which Customer requests to change a nomination, provided that such

hourly nominations, including changes in hourly nominations, are subject to confirmation with the

transporting pipeline. Interruptible Hourly Balancing Service is not intended to serve as an

Operational Balancing Agreement to account for hourly deviations between scheduled volumes and

volumes actually taken by Customer at its point(s) of delivery on the transporting pipeline(s).

Such deviations shall be subject to reconciliation pursuant to the Customer's transportation

agreement(s)with its pipeline Transporter(s) and the pipeline Transporter's (s') tariff(s).