Northern Border Pipeline Company

First Revised Volume No. 1

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Effective Date: 03/22/2010, Docket: RP10-385-000, Status: Effective

Sixth Revised Sheet No. 205 Sixth Revised Sheet No. 205

Superseding: Fifth Revised Sheet No. 205

GENERAL TERMS AND CONDITIONS

1. DEFINITIONS (Continued)

o The term "Btu" shall mean one (1) British thermal unit, the

amount of heat required to raise the temperature of one (1)

pound of water one (1) degree Fahrenheit from fifty-eight and

one-half (58.5) degrees Fahrenheit to fifty-nine and one-half

(59.5) degrees Fahrenheit. (Btu is measured on a dry basis

at 14.73 psia.)

o The term "Btu Adjusted Maximum Delivery Quantity" shall mean

the volume of gas shown as the Maximum Delivery Quantity for a

Point of Delivery in Exhibit A of the Shipper's Service

Agreement multiplied by the Posted Btu Factor for such point

except in the case of firm Shippers participating in the

release program. For those Shippers, Btu Adjusted Maximum

Delivery Quantity shall be Maximum Delivery Quantity for such

point on Shipper's Exhibit A reduced by the total volume

released by that Shipper at that point and multiplied by the

Posted Btu Factor for such point.

o The term "Btu Adjusted Maximum Receipt Quantity" shall mean

the volume of gas shown as the Maximum Receipt Quantity for a

Point of Receipt in Exhibit A of the Shipper's Service

Agreement multiplied by the Posted Btu Factor for such point

except in the case of firm Shippers releasing capacity for

service pursuant to Rate Schedule T-1 or Rate Schedule T-1B.

For those Shippers, Btu Adjusted Maximum Receipt Quantity

shall equal the Agreed Maximum Receipt Quantity multiplied by

the Posted Btu Factor for such point.

o The term "business day" shall mean Monday through Friday,

excluding Federal Banking Holidays for transactions in the

United States and similar holidays for transactions occurring

in Canada and Mexico.

o The term "Buyers" shall mean, at any time, the Persons which

have entered into certain Agreements for services with Company

which are then in effect; and the term "Buyer" shall mean one

of such Persons.

o The term "Calendar Day" shall mean any day, excluding Federal

Banking Holidays for transactions in the United States and

similar holidays for transactions occurring in Canada and

Mexico. Company shall provide advanced notification of such

observed holidays.