Questar Southern Trails Pipeline Company

Original Volume No. 1

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Effective Date: 02/28/2010, Docket: RP10-332-000, Status: Effective

First Revised Sheet No. 90 First Revised Sheet No. 90

Superseding: Original Sheet No. 90




15.10 Unauthorized Receipt or Delivery of Gas. If a Shipper delivers

gas to Southern Trails or takes gas from Southern Trails and (i) has made no

nomination under an existing service agreement or (ii) has no valid service

agreement, then Southern Trails may impose the unauthorized overrun charge set

forth on the Statement of Rates. In addition, upon determination that such

unauthorized action has been taken by a Shipper, Southern Trails may take

action to terminate such unauthorized use of its system.


15.11 Imbalances with Other Parties. Southern Trails shall not be

responsible for eliminating any imbalances between Shipper and any other

party, including without limitation any volume imbalances that accrue between

distribution companies and specific end users or between producers and

distribution companies or end users. Furthermore, Southern Trails shall not

be obligated to adjust or deviate from its standard operating and accounting

procedures in order to alleviate any such imbalances or deficiencies.


15.12 Third Party Imbalance Management. Southern Trails will allow

Shippers to obtain imbalance-management service from a third-party provider

(TPP) subject to the following:


(a) All transactions involving the physical payback of gas or

trading of imbalances on Southern Trails' system must comply with the terms

and conditions of Southern Trails' tariff.


(b) The trading or curing of imbalances may only involve

procedures that are provided for in Southern Trails' tariff.


(c) Shippers will not be permitted to trade imbalances in any

manner that will increase a Shipper's imbalance on Southern Trails' system.


(d) Trading of imbalances may only be between imbalances on

Southern Trails' system.


(e) When a Shipper desires to physically repay or take

deliveries of gas, either the Shipper or the TPP must have the necessary

transportation, receipt and delivery point capacity to allow for the delivery

of the gas.