PetroLogistics Natural Gas Storage LLC

Original Volume No. 1

Effective Date: 06/03/2009, Docket: RP09-577-000, Status: Effective

Original Sheet No. 6 Original Sheet No. 6

RATE STATEMENT ISS – INTERRUPTIBLE STORAGE SERVICE*

Monthly Storage Capacity Charge Market Based/ Negotiable $/Dth

Payment is equal to the Monthly Storage Capacity Charge specified in the Shipper's executed

Interruptible Storage Service Agreement multiplied by the aggregate quantity stored for Shipper's

account during the Month.

Injection Charge Market Based/ Negotiable $/Dth

Payment is equal to the Injection Charge specified in Shipper's executed Interruptible Storage

Service Agreement multiplied by the Dth quantity delivered for injection by the Shipper during a

given Month.

Withdrawal Charge Market Based/ Negotiable $/Dth

Payment is equal to the Withdrawal Charge specified in Shipper's executed Interruptible Storage

Service Agreement multiplied by the Dth quantity withdrawn by Shipper during a given Month.

Fuel Retention Market Based/ Negotiable or in kind $/Dth

This amount of gas is to be reimbursed by Shipper in kind or in dollars per Dth, on a monthly

basis as determined pursuant to the General Terms and Conditions of this FERC Gas Tariff or

Shipper's executed Service Agreement.

Electric Power Costs for Compression

Actual pro rata cost (without markup) based on Shipper's receipt quantities.

Title Transfer Charge Market Based/ Negotiable $/Dth

Payment is equal to the Title Transfer Charge multiplied by the Dth quantity transferred by

Shipper pursuant to Section 17 of the General Terms and Conditions during a given Month.

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

or the Service Agreement and all other applicable surcharges, including, but not limited to, the

ACA charges, shall also be paid by Shipper.

* All quantities of gas are measured in dekatherms (Dth).