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                               AMENDING AGREEMENT


              THIS AMENDING AGREEMENT, made as of the 20th day of July, 1998.

BETWEEN:                                TRANSCANADA PIPELINES LIMITED
                                        a Canadian corporation
                                        ("TransCanada")
                                        OF THE FIRST PART


AND:                                    SELKIRK COGEN PARTNERS, L.P.
                                        a company incorporated under the laws of
                                        the State of Delaware
                                        ("Shipper")
                                        OF THE SECOND PART

WITNESSES THAT:

     WHEREAS  TransCanada  and  Shipper  are  parties  to a  contract  for  firm
transportation  service to the Iroquois delivery point made as of the 6th day of
September, 1991, as amended, identified in TransCanada's records as Contract No.
2132 and having a current  Contract Demand of 594.9 103m3 per day,  (hereinafter
called the "Contract"); and

     WHEREAS Shipper has requested,  and TransCanada has agreed to a decrease of
170.0 103m3 per day in the  Contract  Demand of the  Contract,  concurrent  with
Paramount Resources Ltd. ("Paramount") accepting a new volume of 170.0 103m3 per
day under a separate firm service transportation  contract of even date herewith
pursuant to an  assignment  of that  capacity  from  Shipper to  Paramount  (the
"Permanent  Assignment")  under a permanent  assignment  agreement  of even date
herewith (the "Permanent Assignment Agreement").

     NOW  THEREFORE  THIS  AGREEMENT  WITNESSES  THAT, in  consideration  of the
covenants and agreements herein set forth, the parties hereto covenant and agree
as follows:

1. Clause 2.1 of the Contract  shall be and is hereby  amended by replacing  the
number "594.9" wherever this number appears with the number "424.9".

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2. The Contract as herein modified is hereby ratified and confirmed.

3. This  Amending  Agreement  and the  rights  and  obligations  of the  parties
hereunder  are  subject to all valid and  applicable  present  and future  laws,
rules, regulations, and orders of any regulatory or legislative authority having
jurisdiction  or control over  TransCanada's  Transportation  Tariff  (including
without limitation the FT Toll Schedule), and the Contract as herein amended and
the assignment or sub-assignment of the service entitlement thereunder.

4. This Amending Agreement shall be construed in accordance with and governed by
the laws of the Province of Alberta, and, when applicable, the laws of Canada.

5. All terms and conditions herein capitalized and not otherwise defined in this
Amending  Agreement are  incorporated by reference into this Amending  Agreement
from  the FT Toll  Schedule,  the  List of  Tolls,  and the  General  Terms  and
Conditions set out in TransCanada's Transportation Tariff as amended or approved
from time to time by the National Energy Board.

6. This Amending Agreement shall inure to the benefit of and be binding upon the
parties hereto and their respective successors and permitted assigns.

7. This  Amending  Agreement  shall be effective the later of (a) the 1st day of
November,  1998,  or (b) the  Effective  Date as defined in  Paragraph  3 of the
Permanent Assignment  Agreement;  provided that this Amending Agreement shall be
deemed null and void if the Permanent  Assignment  does not become  effective in
accordance with the terms of the Permanent Assignment Agreement.


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                                                                     Sheet No. 2



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     IN WITNESS  WHEREOF,  the parties  hereto have executed this Contract as of
the date first above written.



SELKIRK COGEN PARTNERS, L.P.:                   TRANSCANADA PIPELINES LIMITED:
by:  JMC Selkirk, Inc., Managing 
       General Partner


/s/George J. Grunbeck                           /s/Greg Fisher
- ----------------------------------              -------------------------------
(Signed)                                        (Signed)



George J. Grunbeck                              Greg Fisher
- ----------------------------------              -------------------------------
(Print Name)                                    (Print Name)


Vice President                                  Vice President
- ---------------------------------               -------------------------------
(Title)                                         (Title)


                                                TRANSCANADA PIPELINES LIMITED:


                                                /s/ Max Feldman
                                                -------------------------------
                                                (Signed)


                                                Max Feldman
                                                --------------------------------
                                                (Print Name)


                                                VP Customer Service
                                                --------------------------------
                                                (Title)


                                                     Contract Approval

                                       Portfolio Team Review             X
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                                       Legal Review                    --------