Questar Southern Trails Pipeline Company

Original Volume No. 1

Effective Date: 10/01/2009, Docket: RP09-1028-000, Status: Effective

Third Revised Sheet No. 35 Third Revised Sheet No. 35

Superseding: Second Revised Sheet No. 35

GENERAL TERMS AND CONDTIONS

1.35 Recallable capacity means firm capacity that is released subject

to the releasing Shipper's right to recall capacity during the term of the

release.

1.36 Receipt point means a point at which Southern Trails receives gas

from or for the account of Shipper for transportation on the system.

1.37 Receipt Point Group (RPG) means a group of receipt points within

specifically identified geographical areas on Southern Trails' transportation

system.

1.38 Releasing Shipper means any Shipper holding firm capacity rights

under a transportation service agreement under Rate Schedule FT that releases

firm capacity.

1.39 Replacement Shipper means any Shipper that acquires released firm

capacity from a releasing Shipper.

1.40 Request for Service means a written or an electronic request for

service submitted by any party under §§ 6 and 7 of the General Terms and

Conditions.

1.41 Reserved daily capacity (RDC) means the quantity of gas in Dth per

day that Southern Trails is obligated to receive, transport and deliver to

Shipper on a firm basis.

1.42 Scheduled quantity means the volume of gas that Southern Trails

agrees to deliver to Shipper during the applicable nomination period.

1.43 Shipper means a party who has either (a) received service

according to an effective rate schedule or a negotiated rate agreement under

this tariff, (b) has executed a transportation service agreement, (c) has

received a logon and password or (d) has completed a request for service.

1.44 System shall mean the pipeline and any compression and related

facilities owned by Southern Trails.

1.45 Time means that references to time in all parts of this tariff are

CCT, unless otherwise noted.

1.46 Unaccounted-for gas means the volume of gas that is the

difference between the sum of all input volumes of gas to the system and the

sum of all output volumes of gas from the system during a month (except gas

as provided for in § 15 of the General Terms and Conditions and changes, if

any, in line pack during that month), including, but not limited to, (a) fuel

gas, (b) gas vented and (c) gas lost as