Questar Pipeline Company

First Revised Volume No. 1

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Effective Date: 01/01/2008, Docket: RP07-457-000, Status: Effective

Ninth Revised Sheet No. 43 Ninth Revised Sheet No. 43 : Effective

Superseding: Eighth Revised Sheet No. 43





1.22 FERC or Commission means the Federal Energy Regulatory Commission

or any successor federal agency or other governmental body succeeding to,

lawfully exercising or superseding any powers that are exercisable by the

Federal Energy Regulatory Commission.


1.23 Force majeure event includes without limitation by this recital:

acts of God, including fires, explosions, earthquakes or volcanic eruptions,

storms, floods, washouts and extreme cold or freezing weather: 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 and 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 necessary for

safe operation by the testing party); inability of either party to obtain

necessary materials, supplies, permits, or labor to perform or comply with

any obligation or condition of this tariff; inability to obtain rights of

way; and any other causes that are not reasonably in the control of the party

claiming suspension.


1.24 Gas or natural gas means combustible hydrocarbon gas.


1.25 Gross heating value, when applied to a cubic foot of gas, means the

number of Btu's produced by combustion at a constant pressure of the amount of

gas that would occupy a volume of one cubic foot (at a temperature of 60°F if

saturated with water vapor and under a pressure equivalent to that of 30

inches of mercury at 32°F and under standard gravitational force of 980.665

cm/sec2) with air of the same temperature and pressure as the gas, when the

products of combustion are cooled to the initial temperature of the gas and

air and when the water formed by combustion is condensed to the liquid state.


1.26 Imbalance means the difference between a shipper's scheduled

delivery and the quantity of gas received by Questar from the shipper during

the applicable nomination period adjusted for fuel use and lost and

unaccounted-for gas.


1.27 Inert substances means non-combustible substances contained in the

gas, including, but not limited to, helium, carbon dioxide and nitrogen.


1.28 Interruptible capacity means the sum of unsold and unnominated firm

capacity at a receipt or delivery point.


1.29 Interruption means reducing, suspending or discontinuing either

the receipt or delivery of gas.