NorAm Gas Transmission Company

Fourth Revised Volume No. 1

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Effective Date: 05/02/1997, Docket: RP97- 57-000, Status: Effective

Third Revised Sheet No. 165 Third Revised Sheet No. 165 : Superseded

Superseding: Second Revised Sheet No. 165

GENERAL TERMS AND CONDITIONS

(continued)

Gross Heating Value shall mean the number of British

Thermal Units produced by the combustion at constant

pressure of the amount of dry Gas which would occupy

a volume of one cubic foot at a temperature of sixty

degrees (60è) Fahrenheit and under an absolute

pressure of 14.73 pounds per square inch 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.

Imbalance shall mean the difference in the MMBtu or

quantity of Gas which Shipper receives at the

Point(s) of Delivery and the MMBtu or quantity of Gas

which Transporter receives for the account of Shipper

at the Point(s) of Receipt (exclusive of the quantity

received as Storage Fuel, if any, and Compressor

Fuel) at any time or during any given period under a

Service Agreement.

Index Price shall mean the arithmetic average of the

daily prices quoted for deliveries to Transporter in

the Daily Price Surveys published by Gas Daily for

the last two weeks of the Month and for the Pooling

Area or geographic area most proximate thereto (if

spot prices are quoted for Transporter's Pooling

Areas or other geographic designations) in which a

particular Imbalance is incurred. If such surveys

are no longer published, the Index Price shall be

derived in the same manner, using the weekly spot

prices quoted in Inside FERC's Gas Marketing Report.

Injection Period. See Section 7 of Rate Schedule

FSS.

Interruptible Maximum Daily Injection Quantity. See

Section 6 of Rate Schedule ISS.

Interruptible Maximum Daily Withdrawal Quantity. See

Section 6 of Rate Schedule ISS.

Interruptible Maximum Storage Quantity. See

Section 6 of Rate Schedule ISS.

Interruptible Working Gas Quantity. See Section 6 of

Rate Schedule ISS.