Portland Natural Gas Transmission System

Second Revised Volume No. 1

Effective Date: 08/01/2010, Docket: RP10-885-000, Status: Effective

First Revised Sheet No. 513 First Revised Sheet No. 513

Superseding: Original Sheet No. 513

PRO FORMA

GAS TRANSPORTATION CONTRACT

FOR INTERRUPTIBLE TRANSPORTATION SERVICE

This Gas Transportation Contract ("Contract") is made as of the [date]

Day of [Month], [Year] by and between Portland Natural Gas Transmission

System, a Maine general partnership, herein called "Transporter," and [name of

Shipper], a [state] [entity] herein called "Shipper," pursuant to the

following recital and representations:

WHEREAS, the Federal Energy Regulatory Commission ("FERC") has issued

a Certificate of Public Convenience and Necessity, authorizing Transporter to

construct, own, operate, and maintain a natural gas transmission system

(herein called "System");

NOW, THEREFORE, in consideration of the mutual covenants and agreements

herein assumed, Transporter and Shipper agree as follows:

ARTICLE I - SCOPE OF CONTRACT

1. On the Commencement Date and each Day thereafter on which Shipper

and Transporter schedule Gas for transportation hereunder, Shipper shall cause

the Scheduled Quantity, up to the Maximum Daily Quantity (MDQ), to be

delivered to Transporter at the Receipt Point(s).

2. On the Commencement Date and each Day thereafter on which the

Scheduled Quantity is delivered to Transporter at the Receipt Point(s)

pursuant to Section 1 of this Article I, Transporter shall, subject to

interruption of service by Transporter in accordance with this Contract and

Transporter's Tariff, make the Scheduled Quantity available to or on behalf of

Shipper at the Delivery Point(s).

3. Shipper shall be solely responsible for securing faithful

performance by gas supplier(s) and/or any applicable upstream or downstream

shippers and transporters in all matters which may affect Transporter's

performance hereunder, and Transporter shall not be liable hereunder to

Shipper as a result of the failure of gas supplier(s) and/or any applicable

upstream or downstream shippers and transporters to so perform.