Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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Effective Date: 01/01/2007, Docket: RP06-407-003, Status: Effective

Substitute Fourth Revised Sheet No. 12 Substitute Fourth Revised Sheet No. 12 : Effective

Superseding: Third Revised Sheet No. 12

STATEMENT OF EFFECTIVE RATES AND CHARGES

FOR TRANSPORTATION OF NATURAL GAS FOR

PARKING AND AUTHORIZED IMBALANCE SERVICES

($/Dth)

Rate Schedule Base Tariff Rate

and Type of Charge Minimum Maximum

PS-1 Parking Service: 0.0 0.351484/d

AIS-1 Authorized

Imbalance Service: 0.0 0.351484/d

Notes:

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