Portland Natural Gas Transmission System

Second Revised Volume No. 1

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

Original Sheet No. 535 Original Sheet No. 535 : Effective

IN WITNESS WHEREOF, the parties hereto have caused this Master Contract

to be duly executed in several counterparts by their proper officers thereunto

duly authorized, as of the date first hereinabove written.

ATTEST: PORTLAND NATURAL GAS TRANSMISSION SYSTEM

_________________ By_______________________________________

ATTEST: [NAME OF REPLACEMENT SHIPPER]

__________________ By