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. 502 First Revised Sheet No. 502

Superseding: Original Sheet No. 502

NOW, THEREFORE, in consideration of the mutual covenants and

agreements herein assumed, Transporter and Shipper agree as follows:

1. Shipper shall apply for or cause to be applied for and use

reasonable best efforts to obtain all of the agreements and governmental

authorizations or exemptions necessary to enable Shipper to deliver to and

receive from Transporter the transportation quantities specified below.

2. Subject to the condition herein, Transporter hereby agrees to

provide to Shipper, and Shipper hereby agrees to accept, firm natural gas

transportation service on Transporter's System under Transporter's Rate

Schedule FT, providing for firm transportation from the receipt point(s) of

the quantities of natural gas specified below. Such firm transportation

service shall be provided for the term specified in Schedule 1. This initial

period of service will be automatically extended from year to year unless

canceled by either party on at least two (2) years prior written notice. The

transportation service, unless otherwise agreed upon, will be provided at the

maximum applicable rate as approved by the FERC in the Tariff, as the Tariff

may be changed from time to time, subject to the rate discount provisions set

forth below.

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, Transporter

shall make the Scheduled Quantity available to or on behalf of Shipper at the

Delivery Point(s) on a firm basis.