Questar Southern Trails Pipeline Company

Original Volume No. 1

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

Third Revised Sheet No. 72 Third Revised Sheet No. 72

Superseding: Second Revised Sheet No. 72

GENERAL TERMS AND CONDITIONS

11.4 Priority at Alternate Receipt and Delivery Points. A Shipper's

priority at alternate points shall be determined according to § 10.

11.5 Rights at Alternate Points. A firm or replacement Shipper must

follow Southern Trails' nomination procedures to flex to alternate receipt and

delivery points. A firm or replacement Shipper's right to service at

alternate receipt and delivery points shall be subordinate to the primary

rights of other firm Shippers at those points, but as provided by § 10 to this

tariff, will have priority over interruptible transportation and authorized

overrun service.

11.6 Right to Renominate. If a firm Shipper or replacement Shipper's

nomination at a receipt or delivery point requires bumping of a Shipper

currently using that receipt or delivery point, Southern Trails will notify

the interrupted Shipper and allow that Shipper to nominate the requested

transportation volumes at another receipt or delivery point subject to the

intra-day nomination procedures set forth in § 14 of these General Terms and

Conditions.

11.7 Availability of Information. Replacement Shippers may obtain

information through Questline regarding Southern Trails' ability to provide

transportation service between the receipt and delivery points desired by the

Replacement Shipper.

12. MEASUREMENT

12.1 References. The following reports and standards stated in this §

12 will be used by Southern Trails when applying measurement practices.

Southern Trails may adopt updates to these reports and standards, as amended

from time to time.

American Gas Association, AGA Report No. 3, Orifice Metering of Natural Gas

and Other Related Hydrocarbon Fluids, Part 2, Specification and Installation

Requirements (AGA Report No. 3, Part 2).

American Gas Association, ANSI B109.3, Rotary-Type Gas Displacement Meters

(AGA ANSI B109.3).

American Gas Association, Compressibility Factors of Natural Gas and Other

Related Hydrocarbon Gases, Transmission Measurement Committee Report No. 8

(AGA Report No. 8).