Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

Effective Date: 01/01/1996, Docket: RP96- 63-000, Status: Effective

First Revised Sheet No. 44 First Revised Sheet No. 44 : Effective

Superseding: Original Sheet No. 44

is at a temperature of 60 degrees Fahrenheit, and at a

pressure of 14.73 pounds per square inch absolute.

2.15 Mcf. The term "Mcf" shall mean 1,000 cubic feet of

gas.

2.16 British Thermal Unit or Btu. The term "British

thermal unit" or "Btu" shall mean the amount of heat required to

raise the temperature of one pound of distilled water 1 degree

Fahrenheit at 60 degrees Fahrenheit, at a constant pressure of

14.73 pounds per square inch absolute.

2.17 Dekatherm or Dth. The term "Dekatherm" or

"Dth" shall mean the quantity of heat energy which is

1,000,000 British thermal units.

2.18 Total Heating Value. The term "total heating

value," when applied to a cubic foot of gas, means the

number of British thermal units produced by the combustion

in a recording calorimeter at constant pressure, of the

amount of gas which would occupy a volume of one cubic foot

at a temperature of 60 degrees Fahrenheit, with the gas

free of water vapor, and under a pressure equal to that of

30 inches of mercury at 32 degrees Fahrenheit and under a

standard gravitational force (acceleration of 980.665 cm

per second per second) 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.

2.19 Gas. The term "gas" shall mean natural gas

of the quality specified in Section 9 of these General

Terms and Conditions.

2.20 System Capacity. The System Capacity

available for transportation and park and loan service on

Transporter's system shall be determined by Transporter,

to the best of its ability, by performing a computer

simulation of the system taking into account nominated

Scheduled and Equivalent Quantities, the available

facilities, the gas characteristics and the linepack gain

or loss required for that day.