Questar Pipeline Company

First Revised Volume No. 1

Effective Date: 07/25/2005, Docket: RP05-401-000, Status: Effective

Third Revised Sheet No. 13 Third Revised Sheet No. 13 : Effective

Superseding: Second Revised Sheet No. 13

RATE SCHEDULE T-1

FIRM TRANSPORTATION SERVICE

(Continued)

(i) Cashout Charges. An imbalance charge will be assessed

according to § 12 of the General Terms and Conditions.

(j) Marketing Fee. Shipper and Questar may agree upon a fee to

be paid by shipper to Questar when Questar actively markets any capacity that

is released to a replacement shipper.

(k) Imbalance Trading Fee. Shipper shall pay Questar a fee as

listed on the Statement of Rates for any imbalance trades that are actively

marketed and facilitated by Questar.

(l) Interruptible Credits. Shippers shall be reimbursed with

interruptible revenue credits, if any, according to § 18.3 of the General

Terms and Conditions.

(m) Other Charges. Questar shall charge shipper for any other

FERC-approved charges that may apply to service under this rate schedule.

3.2. Rate Changes. Questar may file with the FERC to change the rates

listed on the Statement of Rates applicable to service under this rate sched

ule. Questar shall begin charging the changed rates for the service provided

to shipper under this rate schedule on the day the new rates become effective,

subject to any refunds, surcharges or other conditions that are permitted or

required by the FERC and subject to the terms of the transportation service

agreement. Nothing in this section limits shipper's rights to contest the

changes, nor limits the rights of shipper and Questar to provide for changes

in rates through the terms of the transportation service agreement.

3.3 Flexible Rates. Nothing in this tariff limits Questar's right to

implement different rates and charges in individual transportation service

agreements under this rate schedule within the ranges shown on the Statement

of Rates. Questar is not required to tender a service agreement or provide

transportation service when service has been requested at a discounted rate.