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This Amendment may be executed by one or more of the partieshereto in any number of separate counterparts, each of which shall be deemed anoriginal and all of which, taken together, shall be deemed to constitute one andthe same instrument.  Delivery of an executed counterpart of thisAmendment by facsimile transmission or by electronic mail in pdf form shall beas effective as delivery of a manually executed counterparthereof.

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|   | BORROWER: NORTHERN      BORDER PIPELINE COMPANY  |
|--------|------------------------------------------------------------|
|   | By:                                                        | TransCanada      Northern Border Inc., its Operator    |
|   | By                                                         | /s/ Paul F.      Miller                                                                         |
|   |                                                       | Name:       Paul F. Miller |
|   |                                                       | Title:       Principal Executive Officer,Vice      President and General Manager |
|   |                                                       |   |
|   |                                                       |   |
|   | By                                                         | /s/ Patricia M.      Wiederholt                                                                Name:       Patricia M. Wiederholt |
|   |                                                       | Title:       Principal Financial Officer andController |

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|   | LENDERS: SUNTRUST      BANKas      Administrative Agent, as Issuing Bank, as Swingline Lender and as a      Lender  |
|--------|-------------------------------------------------------------------------------------------------------------------------------|
|   | By                                                                                                                            | /s/ Joe McCreery             |
|   |                                                                                                                          | Name:       Joe McCreery |
|   |                                                                                                                          | Title:       Director |
|   |                                                                                                                          |   |

|   | WACHOVIA      BANK, NATIONAL ASSOCIATIONas      Syndication Agent and as a Lender  |
|--------|-----------------------------------------------------------------------------------------|
|   | By                                                                                      | /s/ Lawrence P.      Sullivan          |
|   |                                                                                    | Name:       Lawrence P. Sullivan |
|   |                                                                                    | Title:       Managing Director |
|   |                                                                                    |   |

|   | BMO CAPITAL MARKETS,      as Co-Documentation Agent  |
|--------|-----------------------------------------------------------|
|   | By                                                        | /s/ Ian M.      Plester             |
|   |                                                      | Name:       Ian M. Plester |
|   |                                                      | Title:       Director |
|   |                                                      |   |

|   | BMO      CAPITAL MARKETS FINANCING, INC., as a      Lender  |
|--------|------------------------------------------------------------------|
|   | By                                                               | /s/ Ian M.      Plester             |
|   |                                                             | Name:       Ian M. Plester |
|   |                                                             | Title:       Director |
|   |                                                             |   |

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|   | CITIBANK, N.A.,      as Co-Documentation Agent and as a Lender  |
|--------|----------------------------------------------------------------------|
|   | By                                                                   | /s/ Andrew L.      Kreeger          |
|   |                                                                 | Name:       Andrew L. Kreeger |
|   |                                                                 | Title:       Vice President |
|   |                                                                 |   |

|   | MIZUHO      CORPORATE BANK, LTD., as      Co-Documentation Agent and as a Lender  |
|--------|----------------------------------------------------------------------------------------|
|   | By                                                                                     | /s/  Leon      Mo                 |
|   |                                                                                   | Name:       Leon Mo |
|   |                                                                                   | Title:       Senior Vice President |
|   |                                                                                   |   |

|   | JPMORGAN CHASE BANK,      N.A., as Managing Agent and as a Lender  |
|--------|-------------------------------------------------------------------------|
|   | By                                                                      | /s/ Kenneth J.      Fatur             |
|   |                                                                    | Name:       Kenneth J. Fatur |
|   |                                                                    | Title:       Managing Director |
|   |                                                                    |   |

|   | EXPORT DEVELOPMENT      CANADA, as Managing Agent and as a Lender  |
|--------|-------------------------------------------------------------------------|
|   | By                                                                      | /s/  Janine      Dopson              |
|   |                                                                    | Name:       Janine Dopson |
|   |                                                                    | Title:       Loan Asset Manager |
|   |                                                                    |   |
|   | By                                                                      | /s/  H.      Clysdale                                                                              |
|   |                                                                    | Name:       Howard Clysdale |
|   |                                                                    | Title:       Portfolio Manager |

----

|   | WELLS      FARGO BANK N.A., as      a Lender  |
|--------|----------------------------------------------------|
|   | By                                                 |                              |
|   |                                               | Name: |
|   |                                               | Title: |
|   |                                               |   |

|   | BANK      OF AMERICA, N.A., as      a Lender  |
|--------|----------------------------------------------------|
|   | By                                                 | /s/ Jay Salitza                  |
|   |                                               | Name:       Jay Salitza |
|   |                                               | Title:       Vice President |
|   |                                               |   |

|   | ROYAL      BANK OF CANADA, as      a Lender  |
|--------|---------------------------------------------------|
|   | By                                                |                               |
|   |                                              | Name: |
|   |                                              | Title: |
|   |                                              |   |