PetroLogistics Natural Gas Storage LLC

Original Volume No. 1

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

Original Sheet No. 12 Original Sheet No. 12

RATE SCHEDULE FSS

FIRM STORAGE SERVICE

1. AVAILABILITY

Service under this Rate Schedule is available for any Shipper for the purchase of firm

natural gas storage service from PetroLogistics, provided that:

(a) PetroLogistics has determined that it has sufficient facilities and available and uncommitted

storage capacity and injection and withdrawal capacity to perform service requested by Shipper;

(b) Shipper has submitted a valid request for service and executed a firm storage service agreement

("FSS Service Agreement") with PetroLogistics;

(c) Shipper accepts responsibility for arranging any upstream and downstream transportation service

required for utilization of the storage service provided under this Rate Schedule;

(d) Availability of service under this Rate Schedule shall be subject to a determination by

PetroLogistics that service requested hereunder shall not cause a reduction in PetroLogistics'

ability to provide other firm services;

(e) Shipper complies with the provisions of this Rate Schedule and with all other applicable

provisions of this Tariff; and

(f) Service under this Rate Schedule may not be available to the extent that PetroLogistics would

be required to construct, modify, expand or acquire any facilities to enable PetroLogistics to

perform the requested services.

2. APPLICABILITY AND CHARACTER OF SERVICE

2.1 Subject to the limitations and requirements set forth in this Rate Schedule, the General

Terms and Conditions of Service, and Shipper's FSS Service Agreement, PetroLogistics shall:

(a) inject quantities received by PetroLogistics from or on behalf of Shipper and designated by Shipper

for delivery to "FSS Storage," on a daily basis up to the Maximum Daily Injection Quantity ("MDIQ"),

not to exceed the Maximum Storage Quantity ("MSQ") set forth in Shipper's FSS Service Agreement,

less sufficient quantities for Fuel Retention;

(b) store quantities received by PetroLogistics from or on behalf of Shipper and designated by

Shipper, up to the MSQ set forth in Shipper's FSS Service Agreement;

(c) deliver to Shipper thermally equivalent quantities of gas, on a daily basis up to the Maximum

Daily Withdrawal Quantity ("MDWQ") not to exceed the MSQ set forth in Shipper's FSS Service

Agreement, provided that PetroLogistics shall not be obligated under this Rate Schedule on any Day

to deliver gas in excess of the Storage Inventory quantities then held in storage for Shipper.

2.2 Service rights under an FSS Service Agreement may be released in accordance with Section 8 of

the General Terms and Conditions. Service to a Replacement Shipper under any such capacity release

shall be subject to the provisions set forth in this Rate Schedule, the General Terms and

Conditions, the FSS Service Agreement, the Capacity Release Umbrella Agreement and any Addenda

thereto. If a Shipper releases only a portion of its service