Questar Southern Trails Pipeline Company

Original Volume No. 1

 Contents / Previous / Next / Main Tariff Index

Effective Date: 01/26/2009, Docket: RP09-186-000, Status: Effective

First Revised Sheet No. 22 First Revised Sheet No. 22

Superseding: Original Sheet No. 22

RATE SCHEDULE IT

INTERRUPTIBLE TRANSPORTATION SERVICE

3.2 Rate Changes.

Southern Trails may from time to time file with the FERC to change

the rates set forth on the Statement of Rates applicable to service under this

rate schedule. Southern Trails shall be entitled to implement any changed

rates on their effective dates, subject to any refunds, surcharges or other

conditions that are specified as terms of the transportation service agreement

or that are permitted or required by the FERC. Nothing in this section limits

Shipper's rights to contest such changes, nor limits the rights of Shipper and

Southern Trails to provide for lawful changes in rates through the terms of

the transportation service agreement.

3.3 Flexible Rates. Nothing in this tariff limits Southern Trails'

right to implement different rates in transportation service agreements with

other Shippers under this rate schedule within the ranges set forth in the

Statement of Rates.

Southern Trails will, prior to the beginning of the month and through

use of Informational Postings, post rates at which it is willing to transport

gas between specific receipt and delivery points during the succeeding month.

Southern Trails shall state the effective date of the rate change. A shipper

under this rate schedule paying a discounted rate at the time of notification

may elect to pay a higher rate, or the maximum rate, in order to maintain its

priority of service. Acceptance of any new rate shall be confirmed and

contracted for through Questline.

Southern Trails shall file with the Commission any and all reports as

required by the Commission's Regulations setting forth the applicable charges,

the individual Shippers affected, the volume transported and any other

information that may be required.

3.4 Negotiated Rates. Notwithstanding anything to the contrary

contained in this tariff, Southern Trails and Shipper may negotiate a rate

that exceeds the maximum usage rates for service under this rate schedule.

Southern Trails' maximum rate, as shown on its Statement of Rates, is

available as a recourse rate for any Shipper that does not desire to

negotiate a rate with Southern Trails. The agreement by the Shipper to

accept a negotiated rate does not restrict the Shipper's right to elect

recourse rates for other services. This provision does not, in and of

itself, allow Southern Trails and Shipper to negotiate terms and conditions

of service.