Liberty Gas Storage, LLC

Original Volume No. 1

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Effective Date: 04/15/2007, Docket: RP07-357-000, Status: Effective

Original Sheet No. 11 Original Sheet No. 11 : Effective

IBT RATE STATEMENT - INTERRUPTIBLE IMBALANCE TRADING SERVICE*

RATE UNITS Interruptible Imbalance Trading Market Based/

$/Dth/time period Charge Negotiable Negotiable

RATE UNITS Interruptible Imbalance Trading Market Based/

$/Dth/time period Charge Negotiable Negotiable

Payment shall be equal to the Interruptible Imbalance Trading Charge specified

in Exhibit B of Customer's Hub Services Agreement multiplied by the quantity of

Customer's imbalance quantity that shall have been traded.

traded.

In addition to the charge specified above, Customer shall pay all applicable

taxes set forth in either the General Terms and Conditions of this FERC Gas

Tariff or Exhibit B of the Hub Services Agreement and all other applicable

surcharges, including, but not limited to, the ACA charges.

charges.

* All quantities of Gas are measured in Dekatherms (Dth).