Questar Pipeline Company

First Revised Volume No. 1

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

Fourth Revised Sheet No. 11 Fourth Revised Sheet No. 11 : Effective

Superseding: Third Revised Sheet No. 11

Rate Schedule T-1

Firm Transportation Service

(Continued)

(e) May be released on a permanent or temporary basis according

to the terms of § 6 of the General Terms and Conditions.

2.2. Authorized Overrun Service. Upon the request of shipper, if

capacity is available and if system integrity is not jeopardized, Questar will

transport and deliver quantities of gas exceeding shipper's RDC specified in

the shipper's service agreement, subject to the terms of §§ 9 and 11 of the

General Terms and Conditions of Part 1. The service (i) shall be available

only to the extent it does not impair Questar's ability to provide service

under any other rate schedule (including service up to shipper's RDC under

this rate schedule), (ii) is interruptible, and (iii) is subject to the

authorized overrun charge.

3. RATE PROVISIONS

3.1 Specified Charges. The charges for transportation service under

this rate schedule, except as provided for in § 3.4 (Negotiated Rates) of this

rate schedule, shall be those listed in the currently effective Statement of

Rates, as adjusted from time to time. The charges shall include the

following:

(a) Reservation Charge. A monthly reservation charge shall be

assessed for each Dth of shipper's RDC, subject to the following conditions:

(i) The reservation charge will be stated in the

transportation service agreement and shall be no more than the maximum nor

less than the minimum rate specified in the Statement of Rates.

(ii) Shipper shall be obligated to pay the monthly

reservation charge beginning with shipper's execution of a transportation

service agreement.

(iii) If, at any time, Questar is unable to receive from

or deliver to shipper the quantity of natural gas nominated under the

shipper's transportation service agreement (up to shipper's RDC), the

reservation charge otherwise payable for the affected month shall be adjusted

by the product of the quantity of natural gas Questar failed to receive or

deliver and the monthly reservation charge specified in the transportation

service agreement divided by the number of days in that month. The adjustment

shall be reflected in Questar's billing to shipper.

(iv) Except as provided for elsewhere in this tariff, if

shipper releases its capacity, shipper will remain liable for the reservation

charge.