Algonquin Gas Transmission, LLC

Fifth Revised Volume No. 1

Effective Date: 11/30/2009, Docket: RP10-77-000, Status: Effective

First Revised Sheet No. 522 First Revised Sheet No. 522

Superseding: Original Sheet No. 522

GENERAL TERMS AND CONDITIONS

(continued)

5. MEASUREMENT

5.1 Measurement Unit. The unit of measurement of gas delivered by Algonquin to Customer

shall be the MMBtu.

5.2 Determination of MMBtu Delivered. The number of MMBtu delivered at a Point of Delivery

during any Day shall be determined as the product of (a) and (b) below, divided by

l,000:

(a) The volume of gas delivered during such Day at such point in Mcf, determined in

accordance with the procedures set forth in Section 5.3 below.

(b) The Total Heating Value of the gas delivered during such Day at such Point of

Delivery.

The Total Heating Value shall be measured, unless otherwise agreed by the parties

concerned, by methods in accordance with accepted industry practice, such as, but not

limited to, recording calorimeter(s) or gas chromatograph(s) located at appropriate

points. The arithmetic average of the Total Heating Value recorded each 24-hour day or

other periodic measurements within a shorter time frame as Algonquin shall select shall

be used for computations.

5.3 Determination of Volume Delivered. The volume of gas delivered at any point shall be

measured according to Boyle's and Charles's Law for the measurement of gas under varying

pressures with deviations therefrom as provided in paragraph (g) below, on the

measurement basis hereinafter specified, and shall be determined as follows:

(a) The unit of volume for the purpose of measurement shall be one Cubic Foot of gas

at a temperature of 60° Fahrenheit and an absolute pressure of 14.73 pounds per

square inch.

(b) The average absolute atmospheric pressure shall be assumed to be 14.4 pounds per

square inch.