Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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Effective Date: 01/19/2007, Docket: RP07-115-000, Status: Effective

Third Revised Sheet No. 135 Third Revised Sheet No. 135 : Effective

Superseding: Second Revised Sheet No. 135

TRANSPORTATION GENERAL TERMS AND CONDITIONS

(Continued)

18. OPERATING PROVISIONS (Continued)

18.3 Creditworthiness (Continued)

(A) Creditworthiness for Firm Transportation Service (Continued)

(2)(b) (Continued)

(ii) Cash Security Deposit: A Shipper may provide a

cash security deposit for service via cleared

check or wire transfer. For Existing Capacity,

the deposit must be sufficient to cover up to the

value of three months worth of reservation

charges. For Expansion Capacity on lateral

facilities, the pipeline will not require a

deposit greater than Shipper's pro rata share of

the total facilities costs, and such deposit will

be reduced over time in proportion to Shipper's

contract term, consistent with Paragraph 18.3(C)

of these General Terms and Conditions. GTN will

accrue interest on cash security deposits at the

applicable monthly "Federal Funds (effective)"

rate published in the Federal Reserve Statistical

Report H.15. Interest will be paid by GTN on an

annual basis each September 1 or at the time

Shipper's deposit is returned due to either a

return to creditworthiness by Shipper or the

expiration of Shipper's Agreement(s).

(iii) Letter of Credit: Shipper may post a Letter

of Credit (LC) in a form acceptable to GTN. A

form of LC is available on GTN's Internet website.

For Existing Capacity, the LC must be sufficient

to cover up to the value of three months worth of

reservation charges. For Expansion Capacity on

lateral facilities, the pipeline will not require

an LC greater than Shipper's pro rata share of the

total facilities costs, and such LC will be

reduced over time in proportion to Shipper's

contract term, consistent with Paragraph 18.3(C)

of these General Terms and Conditions.

(iv) Any other security mutually agreed upon by Shipper

and GTN. Such other security shall be accepted on

a nondiscriminatory basis.