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                                                                    EXHIBIT 10.1

                               FIRST AMENDMENT TO
                        EMPLOYEE STOCK OWNERSHIP PLAN OF
                              PRESIDIO OIL COMPANY

                        (Amendment and Third Restatement
                           Effective January 1, 1989)


                                  WITNESSETH:

         WHEREAS, Presidio Oil Company (the "Company") established the
Employee Stock Ownership Plan of Presidio Oil Company (the "Plan") pursuant to
an instrument effective July 1, 1981, for the purpose of providing retirement
benefits to the employees of the Company;

         WHEREAS, in order to comply with the provisions of the Tax
Reform Act of 1986 ("TRA '86"), the Omnibus Budget Reconciliation Acts of 1986
and 1987 ("OBRA '86" and "OBRA '87", respectively), the Technical and
Miscellaneous Revenue Act of 1988 ("TAMRA") and final regulations promulgated
under the Employee Retirement Income Security Act of 1974 ("ERISA") and the
Internal Revenue Code of 1986, as amended, the Plan was restated in its
entirety effective January 1, 1989; and

         WHEREAS, the Internal Revenue Service has requested certain
amendments to the Plan during its' review of the Company's determination letter
request filing.

         NOW, THEREFORE, in consideration of the premises and the mutual
covenants hereinafter contained, it is agreed by the Company, subject to the
approval of the United States Treasury Department, that the Plan is hereby
amended effective January 1, 1989, except where otherwise indicated herein, to
provide as follows:

         1.    Section 2.10 of the Plan is restated to read as follows:
         
               "2.10   "COMPENSATION" shall mean Compensation as defined
         in Section 4.3 for purposes of applying the limitations of that
         Section but excluding all of the following items (even if
         included in gross income) (i) reimbursements or other expense
         allowances, (ii) fringe benefits, (iii) moving expenses, (iv)
         deferred compensation and (v) welfare benefits but including
         any elective contributions that are made by the Company on
         behalf of Employees that are not includible in gross income
         under Code Sections 125, 402(a)(8) and 402(h).
         
               Compensation in excess of $200,000 shall be disregarded.
         Such amount shall be adjusted at the same time and in such
         manner as permitted under Code Section 415(d).  In applying
         this limitation, the family group of
         
         
         
         
         
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         a Highly Compensated Participant who is subject to the Family
         Member aggregation rules of Code Section 414(q)(6) because such
         Participant is either a "five percent owner" of the Company or
         one of the ten (10) Highly Compensated Employees paid the
         greatest "415 Compensation" during the year, shall be treated
         as a single Participant, except that for this purpose Family
         Members shall include only the affected Participant's spouse
         and any lineal descendants who have not attained age nineteen
         (19) before the close of the year.  If, as a result of the
         application of such rules, the adjusted $200,000 limitation is
         exceeded, then the limitation shall be prorated among the
         affected individuals in proportion to each such individual's
         Compensation as determined under this Section prior to the
         application of this limitation.
         
               For Plan Years beginning prior to January 1, 1989, the
         $200,000 limit (without regard to Family Member aggregation)
         shall apply only to Top Heavy Plan Years and shall not be
         adjusted.
         
               Effective for Plan Years beginning on or after January 1,
         1994, the annual Compensation of each Employee under the Plan
         shall not exceed $150,000 as adjusted for increases in the cost
         of living in accordance with Code Section 401(a)(17)(B)."
         
         2.    Section 2.30 is hereby amended by adding the following sentence:
         
               "Stock shall satisfy the requirements of Qualifying 
               Employer Security."
         
         3.    Section 3.1 is hereby amended by adding the following sentence 
at the end of the third paragraph:
         
               "For purposes of eligibility to participate in the Plan,
         a temporary employee is an Employee who is paid on an hourly
         basis and who, upon hire, is advised that he is employed for a
         specific project of limited duration and that upon completion
         of such project, employment will cease."
         
         4.    Section 3.3 is hereby amended by adding the following second 
paragraph:
         
               "An Employee may elect not to participate in the Plan for
         any Plan Year by filing with the Committee a written notice of
         non-participation.  A new election shall be required for each
         such Plan Year.  Such election may be made retroactively, but
         not for any period during which a benefit shall have accrued to
         the Participant.  Upon the expiration of his period of
         non-participation the Employee shall immediately participate in
         the Plan.  A Participant who shall have elected not to
         participate in the Plan for a Plan Year shall not thereafter,
         by revocation of election or otherwise, be entitled to be or
         become an active Participate for such Plan Year.  The operation
         of this non-participation provision may be suspended in whole
         or in part by decision of the Committee if it shall determine,
         upon advice of counsel, that
         
         
         
         
         
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         voluntary non-participation may endanger the tax qualified
         status of the Plan."
         
         5.    Section 4.2 is hereby restated effective January 1, 1987 to read
 as follows:
         
               "4.2    PARTICIPANT  CONTRIBUTIONS.  Participants are not
         permitted to contribute to the Plan."
         
         6.    Section 4.5 is hereby restated to read as follows:
         
               "4.5    SPECIAL ESOP ALLOCATION LIMITATION.  Effective
         for Plan Years beginning after July 12, 1989, if no more than
         one-third (1/3) of the Company contributions to the ESOP for a
         year which are deductible under paragraph (9) of Section 404(a)
         of the Code are allocated to Highly Compensated Employees the
         Annual Addition limitations imposed by this Article shall not
         apply to:
                       (a)  Forfeitures of Company Stock (within the
               meaning of Section 409 of the Code) under the ESOP if
               such securities were acquired with the proceeds of an
               Exempt Loan (as described in Section 404(a)(9)(A) of the
               Code), or
         
                       (b)  Company contributions to the ESOP which are
               deductible under Section 404(a)(9)(B) of the Code and
               charged against the Participant's Account."
         
         7.    Section 11.4 is amended by restating the second sentence thereof
 to read as follows:
         
               "If the Company does not have a "registration-type class
         of securities", each Participant shall be entitled to vote the
         shares of Stock, including fractional shares, allocated to his
         Account with respect to any corporate matter which involves the
         voting of such shares with respect to the consolidation,
         recapitalization, reclassification, liquidation, dissolution,
         sale of substantially all of a trade or business, or such
         similar transaction as the Secretary of the Treasury may
         prescribe in regulations."
         
         8.    Section 11.10 is amended by restating paragraph (a) to read as 
follows:
         
                       "(a)  As soon as practicable after the
               commencement of an exchange offer or tender offer (the
               "Offer") for shares of Stock, the Committee shall use its
               best efforts to cause each Participant to be advised in
               writing of the terms of the Offer and to be provided the
               forms by which the Participant may instruct the Trustee,
               or revoke such instruction, to the extent permitted by
               the terms of the Offer, to exchange or tender, as the
               case may be, all or a portion of the Stock
         
         
         


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               allocated to his Account.  The Trustee shall follow the
               direction of each Participant.  All shares of Stock that
               have been allocated to Participants' accounts for which
               instructions have not been received shall not be
               exchanged or tendered, as the case may be.  Shares of
               Stock that have not been allocated to Participants'
               accounts shall be exchanged or tendered, as the case may
               be, by the Trustee but only as directed by the
               Committee."
         
         9.    Section 12.11 is restated to read as follows:
         
               "12.11  NON-TERMINABLE PROVISIONS.  Notwithstanding the
         fact that the Plan may cease to be an Employee Stock Ownership
         Plan, Stock acquired with proceeds of an Exempt Loan shall
         continue to be subject to the provisions of this Article and
         Sections 11.7 and 11.8."
         
         10.   Section 13.4 is restated to read as follows:
         
               "13.4   EFFECT OF DISAFFILIATION OR WITHDRAWAL.  If at
         the time of disaffiliation or withdrawal the disaffiliating or
         withdrawing corporation shall by resolution of its board of
         directors determine to adopt a substantially identical plan,
         the Trustee shall transfer to the trustee of the new plan all
         of the assets held for the benefit of employees of the
         disaffiliating or withdrawing corporation.  Such payment shall
         operate as a complete discharge of the Trustee, and of all
         corporations except the disaffiliating or withdrawing
         corporation, of all obligations under this Plan to employees of
         the disaffiliating or withdrawing corporation and to their
         beneficiaries.  A new plan shall not be deemedsubstantially
         identical to this Plan if it provides slower vesting than this
         Plan, and nothing in this subsection shall authorize the
         divesting of any vested portion of any Employee's Account.
         This Section shall be subject to the provisions of Article X."
         
         11.   Section 16.2 is hereby amended by adding the following at the 
end thereof:
         
               "A Participant may receive the Eligible Rollover
         Distribution at any time after the Committee clearly informs
         the Participant that he has the right to a period of at least
         30 days after receiving the notice to consider the decision of
         whether or not to elect a distribution, and the Participant,
         after receiving the notice, affirmatively elects a
         distribution."
         
ATTEST:                                           PRESIDIO OIL COMPANY


By:/s/Bruce R. DeBoer                             By:/s/ Robert L. Smith
   ------------------                                -------------------
   Bruce R. DeBoer                                   Robert L. Smith
   Secretary                                         President





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