Portland Natural Gas Transmission System

Second Revised Volume No. 1

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

Second Revised Sheet No. 302 Second Revised Sheet No. 302

Superseding: Original Sheet No. 302

GENERAL TERMS AND CONDITIONS (Continued)

2.6 Delivery Point(s): shall mean a point or points at which

Transporter is authorized to make Gas available to or for the account of

Shipper. With respect to any Shipper, a Delivery Point shall be either

Primary or Secondary. The System Delivery Points are listed on Transporter s

Interactive Internet Website.

2.7 Dth: shall mean the quantity of heat energy which is 1,000,000

British Thermal Units.

2.8 Eastern Time: shall mean Eastern Daylight Savings Time when in

effect and Eastern Standard Time at all other times.

2.9 EDI: shall mean the Electronic Data Interchange as defined by

then-effective standards established by the Gas Industry Standards Board and

approved by the FERC.

2.10 Effective Service Period: shall mean the portion of a Year that a

FT Shipper's Maximum Contract Demand is available for nomination, which shall

be the entire year unless a lesser period is set forth on Schedules 1 and 2 of

the FT Transportation Contract.

2.11 FERC: shall mean the Federal Energy Regulatory Commission or any

successor agency having jurisdiction over this Tariff.

2.12 Force Majeure: shall mean acts of God, strikes, lockouts,

sabotage, acts of the public enemy, wars, blockades, insurrections, riots,

epidemics, landslides, mudslides, lightning, snowstorms, ice storms,

earthquakes, fires, storms, floods, washouts, arrests and restraints of rulers

and peoples, civil disturbances, explosions, breakage of or accident to

machinery or lines of pipe, line freeze-ups, the binding order of any court or

governmental authority which has been resisted in good faith by all reasonable

legal means, and any other cause whatsoever, whether of the kind herein

enumerated, or otherwise which is not within the control of the party claiming

excuse and which by the exercise of due diligence such party is unable to

prevent or overcome. A failure to settle or prevent any strike or other

controversy with employees or with anyone purporting or seeking to represent

employees shall not be considered to be a matter within the control of the

party claiming excuse. Under no circumstances will lack of funds or finances,

or failure of or change in gas supply, markets or storage facilities or fields

be construed to constitute Force Majeure.

2.13 Gas: shall mean natural gas of the quality specified in Section 5

herein.

2.14 Gas Transportation Contract: shall mean a contract for firm or

interruptible service under this Tariff made by and between Transporter and

Shipper, or by and between Transporter and a Replacement Shipper.

Specifically, such term shall include the Gas Transportation Contracts for

Firm Transportation Service, Interruptible Transportation Service, FT-FLEX

Limited Firm Transportation Service, Hourly Reserve Service, Park and Loan

Service, and Gas Transportation Contracts with replacement Shippers, the forms

of which are included in this Tariff.