Questar Southern Trails Pipeline Company

Original Volume No. 1

Effective Date: 08/01/2009, Docket: RP09-780-000, Status: Effective

Second Revised Sheet No. 36 Second Revised Sheet No. 36

Superseding: First Revised Sheet No. 36

GENERAL TERMS AND CONDITIONS

a result of an event of force majeure, the ownership of which cannot be

reasonably identified.

1.47 Unauthorized overrun means that quantity of gas by which Shipper

exceeds, without Southern Trails' consent, Shipper's RDC or DQ.

1.48 Year shall mean a period of 365 consecutive days or 366

consecutive days if such period includes February 29, beginning January 1,

unless otherwise specified.

2. NEGOTIATED RATES

2.1 Applicability. Notwithstanding anything to the contrary contained

in this tariff, Southern Trails may charge a negotiated rate for service under

any rate schedule contained in this tariff to any Shipper that also has access

to service at the rates set forth in the applicable rate schedule as shown on

the effective Statement of Rates (recourse rates), and agrees to pay the

negotiated rate. Recourse rates are the maximum rates set forth in the

applicable rate schedule as shown on the effective Statement of Rates. This

provision, in and of itself, does not allow Southern Trails and Shipper to

negotiate terms and conditions.

2.2 Negotiated Rate. A negotiated rate shall mean a rate for

service, under a single rate schedule, where one or more of the individual

rate components exceed the maximum charge, or are less than the minimum

charge, for such components. This shall include a rate derived by a formula

where one or more of the individual rate components may exceed the maximum

charge, or may be less than the minimum charge.