Dominion Transmission, Inc.

Third Revised Volume No. 1

Effective Date: 02/13/2006, Docket: RP06-174-000, Status: Effective

Second Revised Sheet No. 1010 Second Revised Sheet No. 1010 : Effective

Superseding: First Revised Sheet No. 1010

GENERAL TERMS AND CONDITIONS

Definitions

1.1 General Definitions (continued)

AH. "Total Heating Value" shall mean the number of British

thermal units produced by the combustion, at constant

pressure, of the amount of anhydrous gas which would

occupy a volume of one cubic foot at a temperature of

sixty (60) degrees F and dry and under an absolute

pressure of 14.73 pounds per square inch, equivalent to

101.325 kPa and 15 degrees C, and dry, with air of the

same temperature and pressure as the gas, when the

products of combustion are cooled to the initial

temperature of gas and air, and when the water formed

by combustion is condensed to the liquid state. The

standardized reporting basis for gigacalorie shall be

1.035646 Kg/cm2 and 15.6 degrees C and dry.

AI. "Unauthorized Gas" shall mean all gas introduced,

whether intentionally or otherwise, into any of

Pipeline's facilities without express authorization

from Pipeline, which is not otherwise subject to any

Service Agreement under Pipeline's Tariff that

authorizes the introduction of such gas.

AJ. "Winter Period" shall mean the period of five

consecutive months beginning on November 1 of any

calendar year and ending on March 31 of the next

succeeding calendar year.