Iroquois Gas Transmission System, L.P.

FIRST REVISED VOLUME NO. 1

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Effective Date: 10/17/2006, Docket: RP06-177-000, Status: Effective

Original Sheet No. 39D Original Sheet No. 39D : Effective

5.2 Hub Service Rates

(a) Maximum and Minimum Daily Balance Rate.

The Maximum and Minimum Daily Balance Rate for each Dth of

gas in Shipper’s Loan Balance each day at the Waddington

Loan Point, shall be the Maximum and Minimum Daily Balance

Rate reflected from time to time on the currently effective

Sheet No. 5A of the Tariff.

(b) Discounted Daily Balance Rates. The

Discounted Daily Balance Rate shall be the dollar amount

per Dth of Shipper’s Loan Balances each day at the

Waddington Loan Point as specified daily by Transporter on

its Electronic Bulletin Board, which amount shall be less

than the Maximum Daily Balance Rate, but equal to or

greater than the Minimum Daily Balance Rate.

The Maximum and Minimum Hub Service Commodity Rates for

each Dth of Scheduled Equivalent Quantity at each Delivery

Point shall be the Maximum and Minimum Hub Service

Commodity Rates reflected for Rate Schedule HUB from time

to time on the currently effective Sheet No. 5A of this

FERC Gas Tariff.

(d) Discounted Hub Service Commodity Rate.

The Discounted Hub Service Commodity Rate shall be the

dollar amount per Dth of Scheduled Equivalent Quantity at

each Delivery Point as specified by Transporter in a notice

to Shipper, which amount shall be less than the Maximum Hub

Service Commodity Rate, but equal to or greater than the

Minimum Hub Service Commodity Rate.

5.3 Monthly Bill. The monthly bill for hub service

rendered under this Rate Schedule shall consist of a

Commodity Charge, a Balance Charge, and the ACA and

Deferred Asset Surcharges; provided, however, that when a

Shipper has agreed to a Negotiated Rate or a rate under a

Negotiated Rate Formula, the monthly bill shall be

determined in accordance with the provisions of Section 32

of the General Terms and Conditions and the terms of the

Hub Service Contract between Transporter and Shipper. The

monthly bill shall be determined as follows:

(a) Commodity Charge. For each month, the

Commodity Charge payable by each Shipper shall, subject to

any discount as provided herein, be equal to the Maximum

Hub Service Commodity Rate multiplied by the sum of the

Scheduled Equivalent Quantities nominated by Shipper during

such month.

(b) Balance Charge. For each month, the

Balance Charge payable by each Shipper shall, subject to

any discount as provided herein, be equal to the Maximum

Daily Balance Rate multiplied by the sum of Shipper’s Loan

Balance at Waddington on each day of such month.