Questar Southern Trails Pipeline Company

Original Volume No. 1

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Effective Date: 10/14/2008, Docket: CP99-163-004, Status: Effective

Third Revised Sheet No. 113 Third Revised Sheet No. 113

Superseding: Second Revised Sheet No. 113






Types of Discounts. Southern Trails may agree, in writing, to allow a

variety of discounts between its maximum and minimum rates under any rate

schedule in its tariff without undue discrimination. Such discounts may be

in addition to a base discount and will not be considered a material

deviation from Southern Trails' forms of service agreements when Southern

Trails and Shipper agree that a discount applies. Categories of eligible

discounts are as follows:


1. Specified quantities under shipper's service agreement.


2. Quantities above or below a certain level or all quantities if

quantities exceed a certain level.


3. A specified relationship to quantities actually transported or



4. During specified periods of the year or over specifically defined

periods of time.


5. Specific receipt points, delivery points, pooling areas,

transportation routes, markets or other defined geographic areas, or for

specific direction of gas flow.


6. Alternate receipt points under shipper's contract when shipper

currently has a discount under the contract's primary receipt point.


7. Production reserves, gas supplies or markets committed by a



8. To achieve an agreed-upon, overall effective rate, with a

provision for adjusting the rate components of discounted agreements, if

needed, to preserve the agreed-upon overall effective rate, so long as all

rate components remain within the applicable minimum and maximum rates

specified in the tariff. This provision may apply when a FERC-mandated

change in Southern Trails' Statement of Rates affects the current rate paid

by shipper under a transportation service agreement. The parties may

negotiate a rate that as nearly as possible preserves shipper's contractual

rate, commencing with the approved Statement of Rates. However, nothing

contained herein shall be construed to alter a refund obligation under

applicable law for any period during which rates that had been charged under

a discount agreement exceeded rates which ultimately are found to be just and



9. Quantities conditioned upon implementation and completion of a

construction project or acquisition of facilities.