Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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Effective Date: 04/01/2010, Docket: RP10-511-000, Status: Effective

Fifth Revised Sheet No. 23 Fifth Revised Sheet No. 23

Superseding: Fourth Revised Sheet No. 23

STATEMENT OF EFFECTIVE RATES AND CHARGES

FOR TRANSPORTATION OF NATURAL GAS

(Continued)

NEGOTIATED RATE AGREEMENTS UNDER RATE SCHEDULES FTS-1 AND LFS-1

Explanatory Footnotes for Negotiated Rates

under Rate Schedules FTS-1 and LFS-1

/13 (Continued)

At any time within the last five business days of any month prior to a month

that this Agreement is in effect, the parties may, by mutual consent, modify

the Reservation Rate to a fixed rate for all or a portion of the Maximum

Delivered Quantity for the next month or for the remainder of the Contract

Term. Neither GTN nor Powerex shall be obligated to accept a renegotiated

fixed rate based upon discounted or negotiated rates in effect or offered to

other shippers.

/14 The Reservation Rate shall be $0.02/Dth/day. The Delivery Rate shall be

$0.03/Dth inclusive of ACA. Fuel shall be reimbursed in-kind at the

applicable monthly percentage as posted on GTN's Internet website.

/15 Reserved

/16 The allowance for fuel shall be redetermined daily and shall be the

product of GTN's applicable fuel and line loss percentage for the path of

actual volumes transported multiplied by the commodity value of gas provided

in-kind by the shipper. The commodity value of gas provided in-kind shall

equal the Gas Daily Midpoint Price for NOVA, AECO-C plus $0.20.

/17 The charges for this service will have two components.

1) Fixed rate reservation charge component of $0.05/Dth applied on a daily

basis to the Maximum Delivered Quantity

2) Sharing Spread Component: On days when the Spread Calculation formula

yields a value greater than $0.10/Dth as determined below, the difference

between the results of the Spread Calculation formula and $0.10/Dth shall

be shared equally between GTN and EDF Trading

The per-Dth Spread Calculation shall be determined daily and will equal

(the Gas Daily Midpoint Price [Gas Daily Midpoint Price is the price survey

midpoint for PG&E, Malin and Kingsgate, BC as applicable as published in

Gas Daily for the day of gas flow. Weekend and holiday prices will be

determined using the last published Gas Daily publication prior to the

weekend or holiday.] for PG&E, Malin minus the Gas Daily Midpoint Price for

Kingsgate, BC, minus the sum of the following):