Questar Southern Trails Pipeline Company

Original Volume No. 1

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Effective Date: 10/01/2009, Docket: RP09-1028-000, Status: Effective

First Revised Sheet No. 123 First Revised Sheet No. 123

Superseding: Original Sheet No. 123

Contract No. _____

FORM OF INTERRUPTIBLE TRANSPORTATION SERVICE AGREEMENT

Rate Schedule IT

7. Other Charges:

________ ACA

________ Fuel Reimbursement

8. Additional Facilities Charges:

________ None

________ Lump sum payment of ___________

________ Monthly fee of ________________

________ See Additional Terms

9. Term of Service:

10. Renewal Term:

________ None

________ Month to month

________ Other:

11. Additional Terms and Conditions:

This Agreement includes all the terms and conditions of Southern Trails' FERC

Gas Tariff, Original Volume No. 1 and the terms, conditions and signatures of

Shipper's Questline Access Agreement with Southern Trails.