Questar Overthrust Pipeline Company

Second Revised Volume No. 1-A

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Effective Date: 02/01/2010, Docket: RP10-241-000, Status: Effective

Third Revised Sheet No. 1 Third Revised Sheet No. 1

Superseding: Second Revised Sheet No. 1

TABLE OF CONTENTS SHEET NO.

Preliminary Statement 2

System Map 3

Statement of Rates 4

Non-Conforming Transportation Service Agreements 6

Statement of Negotiated-Rates 7

Rate Schedule FT 10

Rate Schedule IT 20

General Terms and Conditions 30

1. Definitions 31

2. Reserved for future use 35

3. Reserved for future use 36

4. Pipeline Internet Page and Questline 37

5. Questline Contracting Procedures 42

6. Request for Interruptible Service 43

7. Acquiring Firm Service 44

8. Capacity Release and Assignment 51

9. Right of First Refusal 68

10. Creditworthiness 70

11. Priority, Interruption or Curtailment of Service 72

12. Use of Receipt and Delivery Points 74

13. Measurement 76

14. Quality of Gas 82

15. Scheduling of Gas Receipts and Deliveries 85

16. Balancing of Gas 89

17. Billing and Payment 96

18. Force Majeure 100

19. Responsibility for Gas 101

20. Warranty 102

21. Waivers 102

22. Regulations 102

23. Assignments 102

24. Shipper's Failure to Comply With Terms 103

25. Facilities Construction and Reimbursement 103

26. System Operation 106

27. Annual Charge Adjustment 106

28. Standards of Conduct 106

29. North American Energy Standards Board (NAESB) Standards 108

30. Operational Flow Orders (OFO) 109

31. Negotiated Rates 110

32. Discounts 114

33. Segmentation of Capacity 115

34. Applicable Law 116

35. Fuel Use, Lost or Gained and Unaccounted-for Gas Reimbursement

and Tracking 116

Forms of Agreements

Rate Schedule FT 200

Rate Schedule IT 202

Amendments to Agreements 204

Questline Access Agreement 207