Southern Star Central Gas Pipeline, Inc.

Original Volume No. 1

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Effective Date: 03/01/2006, Docket: RP06-188-000, Status: Effective

Third Revised Sheet No. 131 Third Revised Sheet No. 131 : Effective

Superseding: Second Revised Sheet No. 131

ITS RATE SCHEDULE

Interruptible Transportation Service

ITS-P Production Area

ITS-M Market Area

3. RATE (Cont'd)

(g) Fuel and loss is to be reimbursed in kind and is separately stated

for each area. Fuel and loss for ITS-P will be based upon

quantities received into the Production Area. Fuel and loss for

ITS-M will be based upon quantities received in the Market Area.

4. MONTHLY BILL

The bill for deliveries during each billing period under this rate

schedule shall be calculated using the applicable Commodity Charge(s) as

follows:

(a) (i) The Commodity Charge for ITS-P service shall be the product

of (1) the sum of the daily quantities delivered in the

Production Area and from a production area pool to the

Market Area Pool during the billing period and (2) the sum

of the ITS-P Commodity Rate and the Commodity Balancing Fee,

plus any applicable surcharges or other charges.

(ii) The Commodity Charge for ITS-M service shall be the product

of (1) the sum of the daily quantities delivered in the

Market Area during the billing period, and (2) the sum of

the ITS-M Commodity Rate and the Commodity Balancing Fee,

plus any applicable surcharges or other charges.

(iii) Southern Star will not assess commodity surcharges on

deliveries to interfaces or pools when such quantities are

delivered to another downstream transportation agreement

with Southern Star.

(b) The bill shall include any scheduling and balancing charges or

penalties determined pursuant to Section 9 and 10 of the General

Terms and Conditions.

5. GENERAL TERMS AND CONDITIONS

All of the General Terms and Conditions as effective from time to time

are applicable to this rate schedule and hereby made a part hereof.