Gas Transmission Northwest Corp.

Third Revised Volume No. 1-A

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

First Revised Sheet No. 23A First Revised Sheet No. 23A

Superseding: Original Sheet No. 23A

/17 (Continued)

1) an allowance for the per Dth cost of GTN system fuel.

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.

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 "Renegotiations 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-10880 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.

/18 The charges for this service will be as follows:

Index Rate Calculation

The per-Dth Reservation Rate 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):

1) an allowance for the per Dth cost of GTN system fuel.