Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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Effective Date: 04/30/2010, Docket: RP10-550-000, Status: Effective

Second Revised Sheet No. 70 Second Revised Sheet No. 70

Superseding: First Revised Sheet No. 70

RATE SCHEDULE PS-1

PARKING SERVICE

(Continued)

3.1 NEGOTIATED RATES

Notwithstanding any provision of GTN's Tariff to the contrary,

GTN and Shipper may mutually agree in writing to a Negotiated

Rate (including a Negotiated Rate Formula) with respect to the rates,

rate components, charges, or credits that are otherwise prescribed,

required, established, or imposed by this Rate Schedule or by any other

applicable provision of GTN's Tariff.

Such Negotiated Rate shall be set forth in Attachment B to the Parking

Service Agreement and GTN shall make any filings with the Commission

necessary to effectuate such Negotiated Rate.

Shippers paying a Negotiated Rate which exceeds the maximum applicable

tariff rate shall be considered to be paying the maximum applicable

tariff rate for purposes of scheduling, curtailment, and interruption,

and calculating the economic value of a request for available or

unsubscribed capacity.

4. PARKING GENERAL TERMS AND CONDITIONS

All of the Transportation General Terms and Conditions except

Paragraphs 20, 22, 28, 31, 33, 35 and 36 are applicable to this rate

schedule, unless otherwise expressed in the executed Parking Service

Agreement between GTN and Shipper. Any future modifications,

additions or deletions to said Transportation General Terms and

Conditions, unless otherwise provided, are applicable to Parking

service rendered under this rate schedule, and, by this reference,

are made a part hereof.