Questar Southern Trails Pipeline Company

Original Volume No. 1

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

First Revised Sheet No. 32 First Revised Sheet No. 32

Superseding: Original Sheet No. 32




1.11 Day or gas day means a period of 24 consecutive hours, beginning

at 9:00 a.m. Central Clock Time (CCT). Business day is defined as Monday

through Friday, excluding federal banking holidays for transactions in the

U.S., and similar holidays for transactions occurring in Canada and Mexico.


1.12 Decatherm or Dth means a unit of heating value equivalent to

1,000,000 Btu's.


1.13 Delivery point means a point at which Southern Trails delivers gas

to or for the account of Shipper after transportation.


1.14 Delivery Point Group (DPG) means a group of delivery points within

specifically identified geographical areas on Southern Trails' transportation



1.15 Equivalent volumes means the sum of the volumes of gas measured in

Mcf received by Southern Trails for the account of Shipper at the points of

receipt during any given period of time, (a) reduced by (i) fuel gas, (ii)

Shipper's pro rata share of unaccounted-for gas resulting from the operations

of Southern Trails during the same period of time and (iii) any gas vented

during the same period of time and (b) adjusted for any variations in Btu

content, as corrected for any water vapor in excess of seven pounds per

million cubic feet of gas. The volumes of gas delivered at the point of

delivery after transportation shall be the thermal equivalent of the volumes

of gas received at the point of receipt for transportation, after reduction,

correction and adjustment as provided above.


1.16 FERC or Commission means the Federal Energy Regulatory Commission

or any federal commission, agency or other governmental body or bodies suc

ceeding to, lawfully exercising or superseding any powers which are exercis

able by the Federal Energy Regulatory Commission.


1.17 Force majeure shall include, without limitation, acts of God

including fires, explosions, earthquakes or volcanic eruptions, storms,

floods, extreme temperatures, washouts; necessity for compliance with any

court order, law, regulation or ordinance promulgated by any governmental

authority having jurisdiction, either federal, state or local, civil or

military; acts of a public enemy; wars; civil disturbances; strikes, lockouts

or other industrial disturbances; shutdowns for purposes of necessary

repairs, relocations, or construction of facilities, breakage or accident to

machinery or lines of pipe; the necessity for testing (as required by

governmental authority or as deemed