Document:

<PAGE>

                                                                  EXHIBIT 10.M.1

                             AMENDMENT NO. 1 TO THE
                               EL PASO CORPORATION
                           DEFERRED COMPENSATION PLAN

      Pursuant to Section 5.9 of the El Paso Corporation Deferred Compensation
Plan, Amended and Restated effective as of June 13, 2002 (the "Plan"), the Plan
is hereby terminated effective as of November 7, 2002 (the "Termination Date"),
and payment of an amount equal to each Participant's Memorandum Account, plus
interest, income, expense, gain or loss, as applicable, on the outstanding
account balance to November 15, 2002 shall be made to the Participants as
provided for under the Plan as soon as administratively possible.

      IN WITNESS WHEREOF, the Company has caused this amendment to be duly
executed on this 7th day of November, 2002.

                                        EL PASO CORPORATION

                                        By:  /s/ David E. Zerhusen
                                            ------------------------------------
                                            David E. Zerhusen
                                            Its Executive Vice President
                                            Administration

ATTEST:

By:    /s/ David L. Siddall
   -------------------------------
Title:  Corporate Secretary<PAGE>

                                                                  EXHIBIT 10.N.1

                             AMENDMENT NO. 2 TO THE
                               EL PASO CORPORATION
                     KEY EXECUTIVE SEVERANCE PROTECTION PLAN

      Pursuant to Section 8.1 of the El Paso Corporation Key Executive Severance
Protection Plan, Amended and Restated effective as of August 1, 1998, as amended
(the "Plan"), effective November 7, 2002, the Plan is hereby amended to attach
Appendix II to provide a list of certain officers of the Company and its
subsidiaries who are deemed to be participants in the Plan, in addition to those
participants who are eligible to participate in the Plan pursuant to Section 3.1
of the Plan, and closed to any other new participants.

      IN WITNESS WHEREOF, the Company has caused this amendment to be duly
executed on this 7th day of November, 2002.

                                        EL PASO CORPORATION

                                        By:  /s/ David E. Zerhusen
                                            ------------------------------------
                                            David E. Zerhusen
                                            Its Executive Vice President
                                            Administration

Attest:

         /s/ David L. Siddall
----------------------------------------
         Corporate Secretary

<PAGE>

                                   APPENDIX II

                               EL PASO CORPORATION
                     KEY EXECUTIVE SEVERANCE PROTECTION PLAN

      The following individuals are deemed to be participants in the Plan as of
each individual's effective date of participation ("Effective Date of
Participation").

<TABLE>
<CAPTION>
Employee                                Effective Date of Participation
--------                                -------------------------------
<S>                                     <C>
Wayne B. Allred                         November 7, 2002
Robert W. Baker                         November 7, 2002
Randy L. Bartley                        November 7, 2002
Stephen C. Beasley                      November 7, 2002
James J. Cleary                         November 7, 2002
Daniel F. Collins                       November 7, 2002
Bruce Connery                           November 7, 2002
Ralph Eads                              December 4, 2001
John T. Elzner                          November 7, 2002
Rodney D. Erskine                       December 4, 2001
Greg G. Gruber                          November 7, 2002
John L. Harrison                        November 7, 2002
Peggy A. Heeg                           December 4, 2001
E. Jay Holm                             November 7, 2002
John J. Hopper                          November 7, 2002
Gregory W. Huston                       November 7, 2002
Harvey R. Klingensmith                  November 7, 2002
Gary J. Konnie                          November 7, 2002
Charles W. Latch                        November 7, 2002
Richard J. Louden                       November 7, 2002
Daniel B. Martin                        November 7, 2002
Graciela E. Martinez                    November 7, 2002
Kevin J. McMichael                      November 7, 2002
Joseph A. Mills                         November 7, 2002
D. Dwight Scott                         October 1, 2002
David L. Siddall                        November 7, 2002
Clark C. Smith                          November 7, 2002
Judy A. Vandagriff                      November 7, 2002
Gene W. Waguespack                      November 7, 2002
James C. Yardley                        November 7, 2002
David E. Zerhusen                       October 1, 2002
</TABLE>

Acknowledged and Accepted this 7th day of November, 2002.

By: ____________________________
    David E. Zerhusen
    Its Executive Vice President
    Administration

<PAGE>

                                                                  EXHIBIT 10.N.1

                             AMENDMENT NO. 3 TO THE
                               EL PASO CORPORATION
                     KEY EXECUTIVE SEVERANCE PROTECTION PLAN

      Pursuant to Section 8.1 of the El Paso Corporation Key Executive Severance
Protection Plan, Amended and Restated effective as of August 1, 1998, as amended
(the "Plan"), by resolution of the Board of Directors of the Company, the Plan
was amended and closed to any new participants effective as of August 1, 1998,
unless expressly determined otherwise by the Board of Directors.

      IN WITNESS WHEREOF, the Company has caused this amendment to be duly
executed on this 6th day of December, 2002.

                                        EL PASO CORPORATION

                                        By:  /s/ David E. Zerhusen
                                            ------------------------------------
                                            David E. Zerhusen
                                            Its Executive Vice President
                                            Administration

Attest:

         /s/ David L. Siddall
----------------------------------------
Corporate Secretary<PAGE>

                                                                  EXHIBIT 10.P.1

                             AMENDMENT NO. 2 TO THE
                               EL PASO CORPORATION
                              STRATEGIC STOCK PLAN

      Pursuant to Section 14.1 of the El Paso Corporation Strategic Stock Plan,
Amended and Restated effective as of December 3, 1999, as amended (the "Plan"),
the Plan is hereby amended as follows, effective November 7, 2002:

      Section 4 is hereby deleted in its entirety and replaced with the
following:

            "To be eligible for selection by the Plan Administrator to
      participate in the Plan, an individual must be an officer or key
      management employee of the Company, or of any Subsidiary, as of the date
      on which the Plan Administrator grants to such individual an option,
      limited stock appreciation right, stock appreciation right or Restricted
      Stock or a person who, in the judgment of the Plan Administrator, holds a
      position of responsibility and is able to contribute substantially to the
      Company's continued success. Members of the Board of Directors of the
      Company who are full-time salaried officers shall be eligible to
      participate. Notwithstanding the foregoing, the Plan Administrator may
      make a grant under this Plan to members of the Board of Directors who are
      not employees of the Company but contribute substantially to the Company's
      continued success and to individuals who are not officers or key
      management employees, provided that the effectiveness of such grant shall
      be conditioned upon such individual becoming an officer or key management
      employee of the Company or any Subsidiary. "Termination of employment," as
      it relates to non-employee members of the Board of Directors, who
      participate in the Plan, shall mean the cessation of a Director's
      continued service on the Board under the Plan."

      IN WITNESS WHEREOF, the Company has caused this amendment to be duly
executed on this 7th day of November, 2002.

                                        EL PASO CORPORATION

                                        By:  /s/ David E. Zerhusen
                                            ------------------------------------
                                            David E. Zerhusen
                                            Its Executive Vice President
                                            Administration

Attest:

         /s/ David L. Siddall
----------------------------------------
         Corporate Secretary

<PAGE>

                                                                  EXHIBIT 10.P.1

                             AMENDMENT NO. 3 TO THE
                               EL PASO CORPORATION
                              STRATEGIC STOCK PLAN

      Pursuant to Section 14.1 of the El Paso Corporation Strategic Stock Plan,
Amended and Restated effective as of December 3, 1999, as amended (the "Plan"),
the Plan is hereby amended as follows, effective December 6, 2002:

      A new Section 12.9 is added to read as follows:

      "12.9 Any stock options or other awards outstanding under the Plan may be
      changed to reduce the exercise price, cancelled in exchange for other
      compensation, or repurchased, subject to such terms as the Plan
      Administrator shall determine is appropriate, provided that the Company
      shall obtain the consent or approval of the Participant to any such
      reduction in exercise price, cancellation or repurchase if and to the
      extent required under the terms of the Plan, stock option or other award.
      Any such stock options or other equity awards will then be placed back
      into the Plan for reissuance."

      IN WITNESS WHEREOF, the Company has caused this amendment to be duly
executed on this 6th day of December, 2002.

                                        EL PASO CORPORATION

                                        By:  /s/ David E. Zerhusen
                                            ------------------------------------
                                            David E. Zerhusen
                                            Its Executive Vice President
                                            Administration

Attest:

         /s/ David L. Siddall
----------------------------------------
         Corporate Secretary

<PAGE>

                                                                  EXHIBIT 10.P.1

                             AMENDMENT NO. 4 TO THE
                               EL PASO CORPORATION
                              STRATEGIC STOCK PLAN

      Pursuant to Section 14.1 of the El Paso Corporation Strategic Stock Plan,
Amended and Restated effective as of December 3, 1999, as amended (the "Plan"),
the Plan is hereby amended as follows, effective January 29, 2003:

      A new Section 5.3 is added to read as follows:

      "5.3 Subject to Sections 5.1 and 5.2, shares of Common Stock may be issued
      from the Plan to members of the Board of Directors who are not employees
      of the Company pursuant to the terms and conditions of the (1) El Paso
      Corporation 1995 Compensation Plan for Non-Employee Directors, Amended and
      Restated effective as of January 29, 2002 (the "Director's Plan"), for
      allocation of the Director's "Deferred Compensation" or "Deferred
      Retirement Benefit Credit" paid for past and future "Plan Quarters" (all
      terms in quotations shall have the same meanings as defined under the
      Director's Plan)," and (2) El Paso Corporation 2001 Stock Option Plan for
      Non-Employee Directors.

      IN WITNESS WHEREOF, the Company has caused this amendment to be duly
executed on this 29th day of January, 2003.

                                        EL PASO CORPORATION

                                        By:  /s/ David E. Zerhusen
                                            ------------------------------------
                                            David E. Zerhusen
                                            Its Executive Vice President
                                            Administration

Attest:

         /s/ David L. Siddall
----------------------------------------
         Corporate Secretary

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