Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

Effective Date: 06/01/2010, Docket: RP10-795-000, Status: Effective

Original Sheet No. 23B Original Sheet No. 23B

/18 (Continued)

2) an allowance for the per Dth cost of delivery of volumes on the GTN

System equal to the maximum delivery rate applicable under GTN's FTS-1

Tariff for the volumes transported, multiplied by the distance

transported.

3) an allowance for ACA of $0.0019/Dth.

The allowance for GTN System fuel shall be computed as follows:

The Gas Daily Midpoint Price for Kingsgate, BC multiplied by {[1.0/(1.0-

the GTN System fuel rate)] minus 1.0}, where the GTN System fuel rate

equals GTN's applicable mileage-based fuel rate multiplied by the

mileage of the path of the gas transported.

Reservation Rate

On any day when the foregoing Index Rate Calculation produces a result less

than $0.06/Dth, the Reservation Rate shall be deemed to be $0.02/Dth. On any

day when the foregoing Index Rate Calculation produces a result greater than

or equal to $0.06/Dth and less than or equal to $0.10/Dth, The Reservation

Rate shall be deemed to be equal to the calculated per Dth Reservation Rate

minus $0.04/Dth. On any day when the foregoing Index Rate calculation

produces a result greater than $0.10/Dth, the Reservation Rate shall be equal

to six cents ($0.06) plus eighty per cent (80%) of the difference between the

result of the Index Rate Calculation and ten cents ($0.10). To determine the

Index Rate Calculation applicable to volumes not nominated or scheduled, the

Kingsgate, BC to Malin, OR mileage will be applied to the calculation's

mileage-based components.

Other Charges

In addition to the Reservation Rate as calculated herein, EDF Trading shall

pay the Delivery Rate for volumes transported equal to the maximum delivery

rate, plus the ACA charge as applicable under GTN's FTS-1 Tariff. EDF Trading

shall provide fuel in kind in accordance with GTN's FTS-1 Tariff.

Renegotiation Request

In the event that the indices for PG&E, Malin or Kingsgate, BC are not

published on any given day (other than a weekend or holiday), prices will be

determined based on the average of last published information for such indices

and the next published information for such indices. In the event that the

indices for PG&E, Malin or Kingsgate, BC are not published on at least three

business days within a span of six business days, either party may request

negotiation of a replacement rate structure (a "Renegotiation Request"). Upon

such Renegotiation Request, GTN and EDF Trading will use diligent, good faith

efforts to come to a mutually agreeable replacement rate structure. Firm

Transportation Service Agreement F-10881 will terminate on the fifteenth day

following a Renegotiation Request in the event the parties do not agree on a

replacement rate structure prior to such termination.