Questar Southern Trails Pipeline Company

Original Volume No. 1

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Effective Date: 09/01/2005, Docket: RP05-487-000, Status: Effective

Third Revised Sheet No. 100 Third Revised Sheet No. 100 : Effective

Superseding: Second Revised Sheet No. 100

GENERAL TERMS AND CONDITIONS

27. OPERATIONAL FLOW ORDERS (OFO)

27.1 Declaration of OFOs. The declaration to the affected parties of

OFOs, critical periods, and/or critical notices shall describe the conditions

and the specific responses required from the affected parties.

27.2 Notice Procedures of OFOs. Upon issuance of an OFO, notification

will be posted on Southern Trails' Informational Postings and Southern Trails

will support further notification, to be designated by Shipper, and mutually

agreed to, through the following channels: (1) up to two internet e-mail

addresses provided by Shipper or (2) additional electronic notification

designated by Shipper. The notice shall specify (i) the time and date of

issuance of the notice, (ii) the actions that affected Shippers are required

to take, (iii) the nature of the problem sought to be addressed, (iv) the time

by which affected Shippers must comply with the OFO, (v) the anticipated

duration of the OFO (unless otherwise indicated in the notice, the OFO will

remain in effect until Southern Trails contacts the affected Shippers) and

(vi) any other conditions. Shippers must notify Southern Trails of the name

and telephone number of a person who will be available on a 24-hour basis to

receive notice of the issuance of an OFO.