Portland Natural Gas Transmission System

Second Revised Volume No. 1

Effective Date: 09/01/2006, Docket: RP06-449-000, Status: Effective

Original Sheet No. 523 Original Sheet No. 523 : Effective

2. To the extent that Releasing Shipper does not hereunder release all

of its rights to serve under its Gas Transportation Contract for firm service

and/or if the term of Releasing Shipper's Gas Transportation Contract extends

beyond the period of the release as described in the Addendum, Transporter

agrees to provide service to Releasing Shipper under such Gas Transportation

Contract as such Gas Transportation Contract is amended by the provisions of

this Master Capacity Release Agreement.

ARTICLE II - RATE CREDITING PROVISIONS

1. Releasing Shipper's reservation charge shall be credited each Month

by the reservation charge billed to Replacement Shipper(s) by Transporter

(hereinafter the "Replacement Reservation Charge"), as well as any additional

charges paid by Replacement Shipper, subject to such further crediting

conditions as may be outlined in the Addendum and in Section 11 of the General

Terms and Conditions.

2. Releasing Shipper shall remain liable to Transporter for the full

amount of the reservation charge for any Month in which the Replacement

Shipper(s) fails to pay all or any portion of the Replacement Reservation

Charge owing under the Replacement Shipper's Gas Transportation Contract.

ARTICLE III- CAPACITY RELEASE MARKETING FEES

Releasing Shipper shall pay Transporter any applicable marketing fees

set forth in Section 11 of the General Terms and Conditions.

ARTICLE IV - RATE SCHEDULES AND GENERAL TERMS AND CONDITIONS

This Agreement and all terms and all provisions contained or

incorporated herein are subject to the provisions of Rate Schedule FT, and of

the General Terms and Conditions as such may be revised or superseded from

time to time, all of which are by this reference made a part hereof. The

General Terms and Conditions and Rate Schedule FT shall control in the event

of a conflict between the General Terms and Conditions or Rate Schedule FT and

this Agreement. All of the terms defined in Transporter's Tariff shall have

the same meaning wherever used in this Agreement.