VASTAR RESOURCES INC
S-8, 1999-12-29
CRUDE PETROLEUM & NATURAL GAS
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<PAGE>

   As filed with the Securities and Exchange Commission on December 29, 1999
                                                       Registration No._________
________________________________________________________________________________

                      SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C. 20549
                             _____________________

                                   FORM S-8
                            REGISTRATION STATEMENT
                                     UNDER
                          THE SECURITIES ACT OF 1933
                            _______________________

                            Vastar Resources, Inc.
            (Exact name of registrant as specified in its charter)

          Delaware                                         95-4446177
(State or other jurisdiction of                       (I.R.S. employer
incorporation or organization)                       identification number)

                             15375 Memorial Drive
                             Houston, Texas 77079

                         (Address, including zip code,
                 of registrant's principal executive offices)
                             ____________________

                            VASTAR RESOURCES, INC.
                           CAPITAL ACCUMULATION PLAN
                Formerly named the Capital Accumulation Plan II
                           (Full title of the plan)
                             _____________________

                                ALBERT D. HOPPE
                 Vice President, General Counsel and Secretary
                            Vastar Resources, Inc.
                             15375 Memorial Drive
                             Houston, Texas 77079
                                (281) 584-6027

               (Name, address, including zip code, and telephone
              number, including area code, of agent for service)
                             _____________________
<TABLE>
<CAPTION>
                           CALCULATION OF REGISTRATION FEE
- --------------------------------------------------------------------------------------
                       PROPOSED(1)(2)(3)(4)                PROPOSED(4)
    TITLE OF                AMOUNT          MAXIMUM          MAXIMUM        AMOUNT OF
   SECURITIES               TO BE        OFFERING PRICE     AGGREGATE     REGISTRATION
TO BE REGISTERED         REGISTERED        PER SHARE(3)  OFFERING PRICE     FEE(2)(4)
- --------------------------------------------------------------------------------------
<S>                      <C>            <C>             <C>              <C>
Common Stock, par
value $0.01 per share     260,000        $   56.60       $ 14,714,700     $  3,885
======================================================================================
</TABLE>

(1) In addition, pursuant to Rule 416(c) under the Securities Act of 1933, this
registration statement also covers an indeterminate amount of interests to be
offered or sold pursuant to the employee benefit plan(s) described herein.

(2) These are additional shares being registered pursuant to General Instruction
E to Form S-8. This registration statement is also deemed, pursuant to General
Instruction E to Form S-8, to relate to 49,763, 33,746 and 95,343 shares
previously registered on Form S-8 (Registration No. 33-80844), (Registration No.
33-80846) and (Registration No. 33-80848), respectively, in connection with
predecessor plans which have been merged into the plan to which this
Registration Statement relates and with respect to which a registration fees of
$793, $351 and $641, respectively have been paid. See explanatory statement on
page 2.

(3) The number of shares of common stock registered herein is subject to
adjustment to prevent dilution resulting from stock splits, stock dividends and
similar transactions.

(4) In accordance with Rule 457(c), the aggregate offering price and the amount
of the registration fee are computed on the basis of the average of the high and
low prices of a share of the Company's Common Stock as reported on the New York
Stock Exchange Composite on December 27, 1999.

                        ______________________________
                   Page 1 of 6 sequentially numbered pages.
              The Index to Exhibits appears on sequential page 6.
<PAGE>

                             EXPLANATORY STATEMENT

A total of 50,000, 200,000 and 130,000 shares of Common Stock, par value $0.01
per share ("Common Stock") of Vastar Resources, Inc. were registered on Forms
S-8, Registration Nos. 33-80846, 33-80844 and 33-80848, respectively, to be
issued under the Vastar Resources, Inc. Savings Plan ("Savings Plan"), the
Vastar Resources, Inc. Savings Plan II ("Savings Plan II") and the Vastar
Resources, Inc. Capital Accumulation Plan ("Original CAP Plan"), respectively.
These plans have been merged with and into the plan which this Registration
Statement relates (i.e., the Vastar Resources, Inc. Capital Accumulation Plan
II, which was renamed the Vastar Resources, Inc. Capital Accumulation Plan (the
"Surviving CAP Plan")). As of the effective date of the merger of the plans, a
total of 33,746, 95,343 and 49,763 shares of Common Stock which were registered
in connection with Savings Plan, Savings Plan II and the Original CAP Plan had
not been issued under such plans and, pursuant to General Instruction E to Form
S-8 and the telephonic interpretation of the Securities Exchange Commission set
forth at page 113 (question 90, Section G) of the Division of Corporate
Finance's Manual of Publicly Available Telephone Interpretations (July 1997),
such shares are hereby carried forward to and deemed to be covered by this
Registration Statement for issuance under the Surviving CAP Plan. In addition,
this Registration Statement is filed pursuant to General Instruction E of Form
S-8 for the purpose of registering 260,000 additional shares of Common Stock for
issuance under the Surviving CAP Plan.

                    INCORPORATION OF DOCUMENTS BY REFERENCE

Pursuant to General Instruction E to Form S-8, the contents of the Registration
Statement on Form S-8 filed by Vastar Resources, Inc. under Registration
No. 33-80850 are hereby incorporated by reference.

ITEM 5.  Albert D. Hoppe, whose opinion regarding the legality of shares is
attached hereto as Exhibit 5 is Vice President, General Counsel and Secretary of
Vastar Resources, Inc. (the "Company"). As of December 28, 1999, Mr. Hoppe owned
options to purchase 45,150 shares of the Company's Common Stock granted to him
under certain Company benefit plans.

ITEM 8.  EXHIBITS

EXHIBIT NUMBER    DESCRIPTION
______________    ____________

 5                Opinion of Albert D. Hoppe, Esq., dated December 28, 1999,
                  as to the validity of the shares of Common Stock of the
                  Registrant being registered (filed herewith)
10.1              Vastar Resources, Inc. Amended and Restated Capital
                  Accumulation Plan (filed herewith)
23.1              Consent of PricewaterhouseCoopers LLP (filed herewith)
23.2              Consent of Albert D. Hoppe, Esq. (included in Exhibit 5)

                                      -2-
<PAGE>

                                  SIGNATURES

Pursuant to the requirements of the Securities Act of 1933, Vastar Resources,
Inc. certifies that it has reasonable grounds to believe that it meets all of
the requirements for filing on Form S-8 and has duly caused this Registration
Statement on Form S-8 to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Houston, State of Texas, on this 29th day of
December, 1999.

                                              Vastar Resources, Inc.

                                              By: /s/ Charles D. Davidson
                                                 ------------------------------
                                                 Charles D. Davidson
                                                 President and
                                                 Chief Executive Officer

Pursuant to the requirements of the Securities Act of 1933, this Registration
Statement has been signed by the following persons in the capacities and on the
date indicated.
<TABLE>
<CAPTION>

     Signature                    Title                               Date
     ---------                    -----                               ----
<S>                            <C>                          <C>
/s/ Jimmie D. Callison
_____________________________    Director                     December 29, 1999
Jimmie D. Callison

/s/ Terry G. Dallas
_____________________________    Director                     December 29, 1999
Terry G. Dallas

/s/ Charles D. Davidson
_____________________________    President, Chief Executive   December 29, 1999
Charles D. Davidson              Officer and Director
(Principal executive officer)

/s/ Marie L. Knowles
_____________________________    Director                     December 29, 1999
Marie L. Knowles

/s/ Robert C. LeVine
____________________________     Director                     December 29, 1999
Robert C. LeVine

/s/ Joseph P. McCoy
_____________________________    Vice President               December 29, 1999
Joseph P. McCoy                  and Controller
(Principal accounting officer)

/s/ William D. Schulte
____________________________     Director                     December 29, 1999
William D. Schulte

</TABLE>
                                       3
<PAGE>

<TABLE>
<CAPTION>

     Signature                    Title                                         Date
     ---------                    -----                                         ----
<S>                             <C>                                       <C>
/s/ Steven J. Shapiro
_____________________________   Senior Vice President, Chief              December 29, 1999
Steven J. Shapiro               Financial Officer and Director
(Principal financial officer)

/s/ Donald R. Voelte, Jr.
_____________________________   Director                                  December 29, 1999
Donald R. Voelte, Jr.

/s/ Michael E. Wiley
_____________________________   Chairman of the Board                     December 29, 1999
Michael E. Wiley
</TABLE>

                                       4
<PAGE>

Pursuant to the requirements of the Securities Act of 1933, the trustees (or
other persons who administer the employee benefit plan) have duly caused this
registration statement to be signed on its behalf by the undersigned, thereunto
duly authorized, in the City of Houston, State of Texas on December 29, 1999.

Vastar Resources, Inc.
Capital Accumulation Plan

By:  /s/ Joseph P. McCoy
    ------------------------
Name:  Joseph P. McCoy
Title: Vice President and Controller

                                       5
<PAGE>


                               INDEX TO EXHIBITS
Exhibit
No.                           Description

 5          Opinion of Albert D. Hoppe, Esq., dated December 28, 1999,
            as to the validity of the shares of Common Stock of the
            Registrant being registered (filed herewith)
10.1        Vastar Resources, Inc. Amended and Restated Capital
            Accumulation Plan (filed herewith)
23.1        Consent of PricewaterhouseCoopers LLP (filed herewith)
23.2        Consent of Albert D. Hoppe, Esq. (included in Exhibit 5)


                                       6


<PAGE>

                                                                       EXHIBIT 5
(Vastar Logo)
Vastar Resources, Inc.                 Legal and Government Relations Department
15375 Memorial Drive
Houston, Texas 77079
(281) 584-6027
(281) 584-3492 Fax

Albert D. Hoppe
Vice President, General Counsel and Secretary

December __, 1999

Board of Directors
Vastar Resources, Inc.
15375 Memorial Drive
Houston, Texas  77079

                              OPINION OF COUNSEL

I am Vice President, General Counsel and Secretary of Vastar Resources, Inc.
(the "Company") and have acted as counsel for the Company in connection with its
Registration Statement on Form S-8 (the "Registration Statement") relating to
the registration under the Securities Act of 1933, as amended, of 438,852 shares
of the Company's common stock, $0.01 par value (the "Common Stock") (this number
includes 33,746, 95,343 and 49,763 shares of Common Stock that were registered
in connection with the Vastar Resources, Inc. Savings Plan, the Vastar
Resources, Inc. Savings Plan II and the Vastar Resources, Inc. Capital
Accumulation Plan, respectively, on Registration Statement Nos. 33-80846,
33-80844 and 33-80848, respectively, that are carried forward to and deemed
covered by the Registration Statement) issuable pursuant to the Vastar
Resources, Inc. Capital Accumulation Plan, as amended to date and formerly
called the Vastar Resources, Inc. Capital Accumulation Plan II (the "Plan").

As the basis for the opinion hereinafter expressed, I have examined such
statutes, regulations, records and documents, certificates of corporate and
public officials and other instruments as I have deemed necessary or
advisable for the purposes of this opinion.  In such examination, I have
assumed the authenticity of all documents submitted to me as originals and
the conformity with the original documents of all documents submitted to me
as copies.

Based on the foregoing, certain consultations with officers, employees and
agents of the Company and on such legal considerations as I deem relevant, I
am of the opinion that the shares of Common Stock to be issued by the Company
pursuant to the Plan, when issued in accordance with the terms of the Plan,
will be validly issued, fully paid and nonassessable.

I am a member of the Bars of the States of Colorado, Missouri and Texas and I am
familiar with the general corporation law of the State of Delaware and the
federal laws of the United States, insofar as necessary for purposes of
rendering this opinion. I hereby consent to the use of this opinion as an
exhibit to the Registration Statement.

                                           Very truly yours,

                                           /s/  Albert D. Hoppe

<PAGE>

                                                                    EXHIBIT 10.1

VASTAR RESOURCES, INC.
- --------------------------------------------------------------------------------

VASTAR RESOURCES, INC.
CAPITAL ACCUMULATION PLAN


Amendment and Restatement
Effective As Of March 15, 1999
<PAGE>

                             VASTAR RESOURCES, INC
                           CAPITAL ACCUMULATION PLAN



To record the adoption of the amended and restated Vastar Resources, Inc.
Capital Accumulation Plan, effective March 15, 1999, the undersigned, being duly
authorized to act on behalf of Vastar Resources, Inc. has executed this plan
document at Los Angeles, California on the 10th day of December, 1999.



ATTEST:                                         VASTAR RESOURCES, INC.


     /s/ JONATHAN D. EDELFELT                        /s/  JEFFREY M. BENDER
BY: _____________________________               BY: ____________________________
         Jonathan D. Edelfelt                             Jeffrey M. Bender
         Associate Secretary                              Vice President
                                                          Human Resources
<PAGE>

                             VASTAR RESOURCES, INC.
                           CAPITAL ACCUMULATION PLAN
                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                     Page No.
                                                                     --------
<C>             <S>                                                  <C>
INTRODUCTION.........................................................   1

Section 1 - DEFINITION
          1.1   Acquisition Loan.....................................   2
          1.2   Administrator........................................   2
          1.3   Annual Earnings or Earnings..........................   2
          1.4   Capital Accumulation Plan Administrative Committee...   2
          1.5   Code.................................................   2
          1.6   Company..............................................   2
          1.7   Credited Company Service.............................   2
          1.8   Effective Date.......................................   2
          1.9   Elective Deferrals or Deferrals......................   2
         1.10   Employee.............................................   3
         1.11   Employee Contribution Agreement......................   3
         1.12   ERISA................................................   3
         1.13   Financed Shares......................................   3
         1.14   Former Member........................................   3
         1.15   Highly Compensated Employee..........................   3
         1.16   Hour of Service......................................   4
         1.17   Matching Contributions...............................   5
         1.18   Member...............................................   5
         1.19   Member's Account or Account..........................   5
         1.20   Member Contributions.................................   6
         1.21   Plan or Plans........................................   6
         1.22   Plan Year............................................   6
         1.23   Subsidiary or Affiliate..............................   6
         1.24   Trust Agreement......................................   6
         1.25   Trustee..............................................   6
         1.26   Valuation Date.......................................   6

Section 2 - MEMBERSHIP - ELIGIBILITY
          2.1   Membership...........................................   7
          2.2   Notice to Administrator..............................   7
          2.3   Membership Termination...............................   7
          2.4   Member Suspension....................................   8
          2.5   Member Transfers.....................................   8
          2.6   Capital Accumulation Plan Assets.....................   8
</TABLE>

                                       i
<PAGE>

<TABLE>
<C>             <S>                                                   <C>
Section 3 - MEMBERS' ELECTIVE DEFERRALS
          3.1   Members' Elections.................................    10
          3.2   Contribution of Elective Deferrals and Member
                 Contributions......................................   11
          3.3   Annual Dollar Limitation............................   11
          3.4   Actual Deferral Percentage Tests....................   12
          3.5   Distribution of Excess Contributions................   12
          3.6   Make-Up Elective Deferrals and Member Contributions.   13

Section 4 -  COMPANY CONTRIBUTION
          4.1   Matching Contribution...............................   14
          4.2   Form of Contribution................................   14
          4.3   Members Excluded From Contribution..................   14
          4.4   Actual Contribution Percentage Test.................   14
          4.5   Distribution of Excess Contributions................   15
          4.6   Limitation on the Multiple Use Alternative..........   16
          4.7   Section 415 Limitations.............................   16
          4.8   Nonelective Contributions...........................   17
          4.9   Exclusive Benefit...................................   17

Section 5 - FINANCED SHARES
          5.1   Acquisition Loans...................................   18
          5.2   Payments on Acquisition Loan........................   19

Section 6 - INVESTMENT OF MEMBERS' AND FORMER MEMBERS' ACCOUNTS
          6.1   Members' and Former Members' Accounts...............   21
          6.2   Investment of Elective Deferrals,Member Contribution,
                 Rollovers and Certain Matching Contributions.......   21
          6.3   Investment of Company Contributions.................   21
          6.4   Member of Former Member Direction of Investments....   22
          6.5   Allocation of Investment Experience.................   22
          6.6   Manner and Time of Debiting Distributions...........   22
          6.7   Title of Investments................................   22
          6.8   Voting of Investments...............................   22
          6.9   Voting of Vastar Resources, Inc. Common Stock.......   23
         6.10   Allocation of Dividends on Vastar Resources, Inc.
                 Common Stock.......................................   24
         6.11   Investment Advisory Fees............................   24
         6.12   Member or Former Member Protection..................   24
         6.13   Confidentiality.....................................   24

Section 7 - WITHDRAWALS DURING EMPLOYMENT
          7.1   Age 59 1/2 Withdrawal...............................   25
          7.2   Application and Basis for Hardship Withdrawal.......   25
          7.3   Partial Withdrawals of Member Contributions.........   26
</TABLE>
                                      ii

<PAGE>

<TABLE>
<C>             <S>                                                   <C>

Section 8 - PAYMENTS ON TERMINATION OF MEMBERSHIP OR OTHER REASONS
          8.1   Termination of Employment...........................   27
          8.2   Death...............................................   28
          8.3   Disability..........................................   29
          8.4   Divorce.............................................   29
          8.5   Rollover............................................   29
          8.6   Notice..............................................   30
          8.7   Distributions.......................................   30
          8.8   Distribution of Benefits............................   32

Section 9 - LOANS TO MEMBERS
          9.1   General.............................................   33
          9.2   Eligibility.........................................   33
          9.3   Loan Amount.........................................   33
          9.4   Number of Loans.....................................   34
          9.5   Interest Rate.......................................   34
          9.6   Security............................................   34
          9.7   Funding of the Loan.................................   34
          9.8   Repayment of the Loan...............................   34
          9.9   Deemed Distribution.................................   35
         9.10   Default.............................................   35

Section 10 - CAPITAL ACCUMULATION ADMINISTRATIVE COMMITTEE
         10.1   Capital Accumulation Plan Administrative Committee..   36
         10.2   Rules of Conduct....................................   36
         10.3   Legal, Accounting, Clerical.........................   36
         10.4   Interpretation of Provisions........................   36
         10.5   Records of Administration...........................   36
         10.6   Claims for Benefits.................................   37
         10.7   Liability of Committee..............................   38
         10.8   Unlocated Member....................................   38
         10.9   Legal Representative................................   38

Section  11 - AMENDMENTS, DISCONTINUANCE, LIABILITIES
         11.1   Amendment...........................................   39
         11.2   Termination.........................................   39
         11.3   Liability of Company................................   39

Section 12 - MISCELLANEOUS
         12.1   Employment..........................................   40
         12.2   Benefits Not Assignable.............................   40
         12.3   Discharge of Liability..............................   40
         12.4   Governing Laws......................................   40
</TABLE>
                                      iii
<PAGE>

<TABLE>
<C>             <S>                                                   <C>
         12.5   Limitation on Mergers...............................   40
         12.6   Delegation of Fiduciary or Administrative
                 Responsibilities...................................   40
         12.7   Named Fiduciary.....................................   41

Section 13 - ROLLOVERS
         13.1   Rollovers from Other Qualified Plans................   42
         13.2   Transfers from Individual Retirement Accounts.......   42
         13.3   Membership..........................................   42
         13.4   Administration......................................   43

Section 14 - TOP HEAVY PROVISIONS
         14.1   Definitions.........................................   44
         14.2   Minimum Allocation..................................   47
         14.3   ....................................................   48
         14.4   ....................................................   48
         14.5   ....................................................   48
         14.6   ....................................................   48

Section 15 - SPECIAL PROVISIONS APPLICABLE TO EMPLOYEES OF THE COMPANY SECONDED
TO SOUTHERN ENERGY MARKETING, L.P.
         15.1   ....................................................   49
         15.2   ....................................................   49
         15.3   ....................................................   49
         15.4   ....................................................   49
         15.5   ....................................................   49
</TABLE>

                                      iv
<PAGE>

                             VASTAR RESOURCES, INC.
                           CAPITAL ACCUMULATION PLAN

                                  INTRODUCTION

This Plan is intended to qualify as a Stock Bonus Plan under (S)401(a) of the
Internal Revenue Code of 1986, as amended, and as a Qualified Cash or Deferred
Arrangement under (S)401(k) of the Code.  Part of the Plan (the "ESOP Part") is
intended to qualify as an Employee Stock Ownership Plan under (S)4975(e)(7) of
the Code and such part is designed to invest primarily in Vastar Resources, Inc.
Common Stock.

Effective March 14, 1999, the Vastar Resources, Inc. Capital Accumulation Plan,
the Vastar Resources, Inc. Savings Plan II, the Vastar Resources, Inc. Savings
Plan (the "Predecessor Plans") are merged into the Vastar Resources, Inc.
Capital Accumulation Plan II and the name of the plan is changed to the Vastar
Resources, Inc. Capital Accumulation Plan.

The class of employees eligible to participate in this Plan previously
participated in the Atlantic Richfield Capital Accumulation Plan II and Atlantic
Richfield Savings Plan II.  The assets and liabilities of the Atlantic Richfield
Capital Accumulation Plan II and the Atlantic Richfield Savings Plan II
allocable as of June 30, 1994 to the participants in this Plan who commenced
participation effective July 1, 1994 were transferred to this Plan.  This Plan
is a continuation of the Atlantic Richfield Capital Accumulation Plan II and
Atlantic Richfield Savings Plan II with respect to the former participants of
such plans who transferred to, and commenced participation in, this Plan
effective July 1, 1994.

This amendment and restatement of the Plan is effective March 15, 1999, except
as otherwise indicated, and is intended to bring the Plan into compliance with
the Uniformed Services Employment and Re-employment Act of 1994, Small Business
Protection Act of 1996, subsequent legislation, and relevant regulations and
rulings.  The provisions of this amended and restated plan apply to persons who
are employed on or after March 15, 1999, unless otherwise indicated.

                                       1
<PAGE>

                                   SECTION 1
                                  DEFINITIONS

1.1  "Acquisition Loan"  means a loan or other extension of credit used by the
     Trustee to finance the acquisition of Vastar Resources, Inc. Company Common
     Stock.

1.2  "Administrator"  means the Capital Accumulation Plan Administrative
     Committee.

1.3  "Annual Earnings" or "Earnings"  means the annual, actual wages or salary
     paid to a Member for the Member's personal service, including the amount of
     any Employee contribution pursuant to (S)125 and (S)401(k) of the Code, as
     amended, but excluding, effective September 1, 1994, foreign service
     premiums(1), and extra pay such as overtime, premiums, bonuses, living or
     other allowances.  Annual Earnings shall not exceed a Member's regular
     wages or salary as determined by the Company.  Annual Earnings or Earnings
     shall not exceed $160,000, as adjusted each Plan Year pursuant to
     (S)401(a)(17)(B) of the Code.

1.4  "Capital Accumulation Plan Administrative Committee" means the committee
     provided for in Section 10 of this Plan.

1.5  "Code"  means the Internal Revenue Code of 1986, as amended.

1.6  "Company" means Vastar Resources, Inc. and such of its Subsidiaries or
     Affiliates whose Employees are included in this Plan upon authorization of
     the Board of Directors of Vastar Resources, Inc. and adoption of this Plan
     by the Board of Directors of such authorized Subsidiary or Affiliate.

1.7  "Credited Company Service" means service with the Company, a predecessor
     company, and/or a Subsidiary or Affiliate which service the Company
     recognizes, on a basis uniformly applicable to all persons similarly
     situated, for purposes of this Plan.

1.8  "Effective Date" means the effective date of this amended and restated Plan
     which is March 15, 1999, unless otherwise indicated.

1.9  "Elective Deferrals" or "Deferrals" means reductions pursuant to an
     Employee Contribution Agreement of a Member's Annual Earnings, which
     amounts are transferred by the Company to the Trustee of the Plan.

- ---------------------
(1)  The exclusion of foreign service premiums shall not apply to a Member who
     on September 1, 1994 is in a foreign assignment until such time as the
     Member leaves the country in which the Member is employed on September 1,
     1994 or, if later, completes the assignment in which the Member was engaged
     on September 1, 1994.

                                       2
<PAGE>

1.10  "Employee"  means any person who is employed by the Company, excluding:

      (a) Casual Employees, Project Employees and Leased Employees, as
          defined under the Vastar Resources, Inc. Employment Status
          Classification Policy;

      (b) Employees represented by any collective bargaining agent which has
          not negotiated the benefits of this Plan; and

      (c) Any division or group of employees which is expressly excluded from
          eligibility for the Plan by action of the Board of Directors of Vastar
          Resources, Inc. or, in the case of a Subsidiary or Affiliate, action
          by the Board of Directors of the Subsidiary or Affiliate by which such
          employees are paid.

1.11  "Employee Contribution Agreement"  means an agreement entered into between
      the Member and the Company, and by which the Member agrees to accept a
      reduction in Earnings from the Company equal to any whole (or fractions,
      as required by adjustments under Paragraph 3.3, 3.4 or 4.4) percentage,
      per payroll period. This reduction may be on a pre-tax or after-tax basis,
      as elected by the Member. This agreement shall apply to each payroll
      period during the period it is in effect in which the Member receives
      Earnings. In consideration of such agreement, the Company will transfer to
      the Member's pre-tax Elective Deferral subaccount or to the Member's
      after-tax Member Contribution subaccount, as applicable, the amount of the
      Elective Deferrals or Member Contributions.

1.12  "ERISA"  means the Employee Retirement Income Security Act of 1974.

1.13  "Financed Shares"  means shares of Vastar Resources, Inc. Company Common
      Stock acquired by the Trustee with the proceeds of an Acquisition Loan.

1.14  "Former Member" means a Member whose membership has terminated pursuant to
      Paragraph 2.3 and whose account has not been fully distributed.

1.15  "Highly Compensated Employee", effective July 1, 1997, means:

      (a)  Any employee who performs service during the determination year and
           is described in one or more of the following groups:

           (i)  An employee who is a five percent owner, as defined in
                (S)416(i)(1) of the Code, at any time during the determination
                year or the look-back year, as defined below; or

           (ii) An employee who receives compensation in excess of $80,000, as
                adjusted pursuant to (S)415(d) of the Code during the look-back
                year.

                                       3
<PAGE>

      (b)  For purposes of the definition of Highly Compensated Employee the
           following will apply:

           (i)    The determination year is the Plan Year for which the
                  determination of who is highly compensated is being made.

           (ii)   The look-back year is the 12-month period immediately
                  preceding the determination year; provided, however, that for
                  the Plan Year beginning March 15, 1999, the look-back year
                  shall be the calendar beginning January 1, 1999.

           (iii)  Employers aggregated under (S)414(b), (c), (m), or (o) of the
                  Code are treated as a single employer.

           (iv)   Compensation, for purposes of this Paragraph 1.15 means
                  compensation within the meaning of (S)415(c)(3) of the Code
                  without regard to (S)125, (S)402(e)(3) and (S)402(h)(1)(B) of
                  the Code.

      (c) A former Employee who has a separation year prior to the determination
          year and who was a highly compensated active employee for either (i)
          such employee's separation year, or (ii) any determination year ending
          on or after the employee's 55th birthday will be a Highly Compensated
          Employee. Generally, a separation year is the determination year the
          employee separates from service. An employee who separated from
          service before January 1, 1987, will be included as a Highly
          Compensated Employee only if the Employee was a five percent owner or
          received compensation in excess of $50,000 during the year.

1.16  "Hour of Service"  means:

      (a) Each hour for which an Employee is paid, or entitled to payment, for
          the performance of duties for the Company or any Subsidiary or
          Affiliate during the computation period in which the duties are
          performed.

      (b) Each hour for which an Employee is paid, or entitled to payment, by
          the Company or any Subsidiary or Affiliate on account of a period of
          time during which no duties are performed (irrespective of whether the
          employment relationship has terminated) due to vacation, holiday,
          illness, incapacity (including disability), layoff, jury duty,
          military duty or leave of absence.

      (c) Each hour for which back pay, irrespective of mitigation of damages,
          is either awarded or agreed to by the Company or any Subsidiary or
          Affiliate. Such hours shall be credited to the Employee for the
          computation period or periods to which the award or agreement
          pertains.

                                       4
<PAGE>

      (d) An Employee will be credited with 200 Hours of Service, to the extent
          required by Federal law, for each month during which the Employee is
          on active duty in the Armed Forces of the United States and for which
          the Employee is not paid or entitled to be paid by the Company or any
          Subsidiary or Affiliate.

      (e) Hours credited for any period under any provision of this Paragraph
          1.16 may not also be credited for the same period under any other
          provisions of this Plan. Hours shall be credited under Subparagraphs
          1.16(a) through (c) pursuant to U.S. Department of Labor Regulations
          under 29CFR (S)2530.200b-2, which are incorporated herein by this
          reference.

      (f) For all purposes under the Plan, an Employee shall be credited with
          200 Hours of Service for each calendar month in which the Employee
          would otherwise be credited with one or more Hours of Service.

      (g) Solely for purposes of determining whether a break in service has
          occurred in a computation period, and to the extent it does not
          duplicate Hours of Service credited under any other provision of this
          Paragraph 1.16, an individual who is absent from work for maternity or
          paternity reasons shall receive credit for the Hours of Service which
          would otherwise have been credited to such individual but for such
          absence, or in any case in which such hours cannot be determined,
          eight Hours of Service per day of such absence.  For purposes of this
          subparagraph, an absence from work for maternity or paternity reasons
          means an absence which is (i) by reason of the pregnancy of the
          individual; (ii) by reason of a birth of a child of the individual;
          (iii) by reason of the placement of a child with the individual in
          connection with the adoption of the child by such individual; or (iv)
          for purposes of caring for such child for a period beginning
          immediately following such birth or placement.  The Hours of Service
          credited under this subparagraph shall be credited within the
          computation period in which the absence begins if the crediting is
          necessary to prevent a break in service in that period, or in all
          other cases, in the following computation period.

1.17  "Matching Contributions"  means the Company contribution pursuant to
      Paragraph 4.1 of the Plan.

1.18  "Member"  means an Employee who has qualified for membership in accordance
      with the requirements of this Plan and whose membership has not terminated
      in accordance with Paragraph 2.3 of the Plan.

1.19  "Member's Account" or "Account"  means a separate account maintained by
      the Trustee for each Member consisting of (a) one subaccount to which is
      allocated the Member's Elective Deferrals, as adjusted for earnings and
      withdrawals, and realized and unrealized gains and losses attributable
      thereto; (b) a second subaccount to which is allocated Member
      Contributions as adjusted for earnings and withdrawals,

                                       5
<PAGE>

      and realized and unrealized gains and losses attributable thereto; (c) a
      third subaccount to which is allocated the Company's contributions as
      adjusted for earnings and withdrawals, and realized and unrealized gains
      and losses attributable thereto; and (d) a fourth subaccount to which is
      allocated rollovers pursuant to Section 13 as adjusted for earnings and
      withdrawals, and realized and unrealized gains and losses attributable
      thereto.

1.20  "Member Contributions"  means after-tax reductions in the Member's Annual
      Earnings pursuant to an Employee Contribution Agreement, which amounts are
      transferred by the Company to the Trustee.

1.21  "Plan" or "Plans"  means the Vastar Resources, Inc. Capital Accumulation
      Plan as set forth herein, and any amendments thereto.

1.22  "Plan Year"  means the period commencing on March 15, 1999 and ending on
      December 31, 1999.  Thereafter, the Plan Year shall be the calendar year.

1.23  "Subsidiary" or "Affiliate"  means:

      (a) All corporations which are members of a controlled group of
          corporations within the meaning of (S)1563(a) of the Code (determined
          without regard to (S)1563(a)(4) and (S)1563(e)(3)(c) of such Code) and
          of which Vastar Resources, Inc. is then a member.

      (b) All trades or businesses, whether or not incorporated, which, under
          the regulations prescribed by the Secretary of the Treasury pursuant
          to (S)210(d) of ERISA or (S)414(c) of the Code are then under common
          control with Vastar Resources, Inc.

      Subsidiary or Affiliate shall be determined by substituting "more than 50
      percent" or "at least 80 percent" each place it appears in the
      aforementioned Code sections.

1.24  "Trust Agreement"  means the agreement of trust between the Trustee and
      Vastar Resources, Inc. to hold contributions from the Company, Deferrals
      and Member Contributions of Members, transfers and rollovers, and
      investments thereof and earnings thereon.

1.25  "Trustee"  means the persons or corporations, or both, designated by the
      Trust Agreement.  The duties and responsibilities of the Trustee shall be
      those set forth in the Trust Agreement.

1.26  "Valuation Date"  means the date or dates established by the Administrator
      for the valuation of the assets of the Plan.  In no event shall the assets
      of the Plan be valued less frequently than once each Plan Year.

                                       6
<PAGE>

                                   SECTION 2
                            MEMBERSHIP - ELIGIBILITY

2.1   Membership

      (a) Elective Deferrals and Member Contributions -  An Employee who is paid
          on the United States dollar payroll of the Company may become a Member
          and make Elective Deferrals and/or Member Contributions on or after
          the Employee's date of employment.

          To become a Member, an Employee must enter into an Employee
          Contribution Agreement in accordance with Section 3.

      (b) Company Contributions -  An Employee who is paid on a United States
          dollar payroll of the Company shall be eligible for Matching
          Contributions with respect to Elective Deferrals on the earlier of (i)
          or (ii) below:

          (i)  Completion of six months of Credited Company Service, or

          (ii) The end of any 12-consecutive-month period during which the
               Employee completes at least 1,000 Hours of Service.  Such 12-
               consecutive-month period shall commence on the Employee's date of
               employment or any anniversary thereof.

2.2   Notice to Administrator

      The Company shall advise the Administrator as to the date an Employee
      becomes a Member. In the event that any question arises as to the
      eligibility of any Employee, the decision of the Administrator as to such
      Employee's eligibility shall be binding upon the Company, the Employees,
      the Members, the beneficiaries, and any and all other persons having or
      claiming any interest hereunder.

2.3   Membership Termination

      (a) An Employee's membership shall terminate upon:

          (i)   Death, disability, dismissal, retirement or termination of
                employment for any other reason;

          (ii)  Continuation of a Participant's employment with an acquiring
                corporation in conjunction with a sale to the acquiring
                corporation of substantially all of the assets used by the
                Company or any Subsidiary or Affiliate in a trade or business
                which such entity conducts; or
          (iii) A disposition of the Company's interest in a Subsidiary
                or Affiliate when the Participant continues employment with such
                Subsidiary or Affiliate.

                                       7
<PAGE>

      (b) A Member may not voluntarily terminate membership in this Plan during
          active employment with the Company.

      (c) If a Member transfers employment to a Subsidiary or Affiliate of the
          Company which is not participating in this Plan, or to an employment
          classification excluded from Plan participation, the Member's
          eligibility to make Elective Deferrals and Member Contributions, and
          to receive Matching or nonelective  Contributions shall cease, but the
          Member's Account shall not be distributed until the Member has
          terminated employment with Vastar Resources, Inc. or all of its
          Subsidiaries or Affiliates or is involved in a sale described in
          Subparagraph 2.3(a)(ii) or (iii).

2.4   Member Suspension

      If an Employee is a Member of a defined contribution plan of the Company
      (including the Predecessor Plans), or a Subsidiary or Affiliate, and the
      Elective Deferrals to such plan of the Company or Subsidiary or Affiliate
      are suspended at the time the Employee becomes eligible for membership in
      this Plan, the Elective Deferrals and Employee's Contributions to the Plan
      shall commence with the first full pay period beginning on or after the
      date on which such period of suspension then in effect under the plan of
      the Company, or the Subsidiary or Affiliate, ends.


2.5   Member Transfers

      If a Member transfers to employment with a Subsidiary or Affiliate of the
      Company, which maintains a capital accumulation plan, the Member's Account
      shall be transferred to the capital accumulation plan of the Subsidiary or
      Affiliate in accordance with procedure established by the Administrator.


2.6   Capital Accumulation Plan Assets

      (a) Upon the transfer of employment from the Atlantic Richfield Company of
          an Employee eligible to participate in the Plan, any assets maintained
          under the Atlantic Richfield Capital Accumulation Plan on behalf of
          such Employee will be transferred to the Plan in the same investment
          alternatives held as of the transfer date, and such transferred assets
          will be subject to the reinvestment provisions under Paragraph 6.4,
          except as provided herein:

          (i)  Any Atlantic Richfield Company Common Stock attributable to the
               Member Deferrals, Member Contributions and Rollover Contributions
               under the non-ESOP Part of the Atlantic Richfield Capital
               Accumulation Plan, transferred on behalf of a Member to the
               Member Account described in Paragraph 1.19(a), 1.19(b) and
               1.19(d) of the

                                       8
<PAGE>

               Plan, will remain so invested, with future dividends being
               reinvested in such stock, absent the Member's direction to
               reinvest such assets pursuant to Paragraph 6.4 of the Plan;
               provided, however, that any assets converted from Atlantic
               Richfield Company Common Stock to another investment alternative
               under the Plan may not be reinvested in Atlantic Richfield
               Company Common Stock.

          (ii) Any Atlantic Richfield Company Common Stock attributable to the
               Member Deferrals, Member Contributions and Rollover Contributions
               under the ESOP Part of the Atlantic Richfield Capital
               Accumulation Plan, transferred on behalf of a Member to the
               Member Account described in Paragraph 1.19(a), 1.19(b) and
               1.19(d) of the Plan, will remain so invested, with future
               dividends being distributed as described in Subparagraph 6.10(a)
               of the Plan, absent the Member's direction to reinvest such
               assets pursuant to Paragraph 6.4 of the Plan. Any assets
               converted from Atlantic Richfield Company Common Stock to another
               investment alternative under the Plan may not be reinvested in
               Atlantic Richfield Company Common Stock.

         (iii) Any Atlantic Richfield Company Common Stock attributable to the
               Company Contributions under the ESOP Part of the Atlantic
               Richfield Capital Accumulation Plan, transferred on behalf of a
               Member to the Member Account described in Paragraph 1.19(c) of
               the Plan, will remain so invested with future dividends being
               distributed as described in Subparagraph 6.10(a) of the Plan,
               unless the Member elects to convert such assets to the Vastar
               Resources, Inc. Common Stock. Any assets in the Member Account
               described in Paragraph 1.19(c) may only be converted to Vastar
               Resources, Inc. Common Stock in accordance to Paragraph 6.3, and
               may not be reinvested in Atlantic Richfield Company Common Stock.

      (b) Effective March 15, 1999, shares of Atlantic Richfield Company
          Common Stock held in the ESOP Part of the Plan may no longer be
          converted to shares held under the non-ESOP Part of the Plan, and such
          non-ESOP shares may no longer be converted to shares held under the
          ESOP Part of the Plan.

      (c) Common Stock of a Subsidiary or Affiliate held by the Plan shall be
          subject to the sale and voting provisions of Section 6.

                                       9
<PAGE>

                                   SECTION 3
                          MEMBERS' ELECTIVE DEFERRALS

3.1   Members' Elections

      (a) Each Member who is an Employee may enter into an Employee Contribution
          Agreement with the Company providing for withholding of Elective
          Deferrals and/or Member Contributions from each of the Member's
          regular paychecks at a rate of one percent to 27 percent of the
          Member's Earnings, in whole percentages.  An Employee Contribution
          Agreement shall remain in effect until changed by the Member, except
          as otherwise set forth in this Section 3.

      (b) A Member's election shall be made in the manner prescribed by the
          Administrator and shall include such information as the Administrator
          may require.  A Member may change the Member's election with respect
          to the Member's rate of future contributions at any time by giving
          notice in such manner as is prescribed by the Administrator.  Such
          changes shall be effective as soon as administratively feasible after
          the date of receipt of such notice by the Administrator, or its
          delegate.

      (c) The Company may limit or reduce its Employee Contribution Agreement
          with any Member at any time, on a nondiscriminatory basis, to the
          extent necessary to ensure compliance with the limitations of
          Paragraph 3.3, 3.4, 4.4 or 4.7.

      (d) A Member's Elective Deferrals and Member Contributions will be
          suspended as follows:

          (i) Upon the Member's transfer, other than on an approved leave of
              absence, to employment with:

              (1) A Subsidiary or Affiliate which is not participating in the
                  Plan; or

              (2) Vastar Resources, Inc. or any of its Subsidiaries or
                  Affiliates in such foreign countries as the Company shall
                  designate; the Member's Elective Deferrals and/or Member
                  Contributions shall automatically be suspended while the
                  Member remains in such employment.

          (ii)  Upon the Member's transfer to an employee group of the Company
                that is not participating in the Plan.

          (iii) As described in Section 7.

                                       10
<PAGE>

3.2   Contribution of Elective Deferrals and Member Contributions

      The Company shall pay to the Trustee on behalf of each Member the Elective
      Deferrals and Member Contributions elected by the Member.  A Member's
      Elective Deferrals and Member Contributions shall be paid to the Trustee
      the earlier of the date such Elective Deferrals and Member Contributions
      can reasonably be segregated from the Company's general assets or the 15th
      day of the month following the month in which the Elective Deferrals and
      Member Contributions would have been paid to the Member.  Elective
      Deferrals and Member Contributions may be paid to the Trustee in the
      following forms:

      (a) To the extent that a Member has directed pursuant to the Plan that his
          or her Elective Deferrals and/or Member Contributions be invested in
          an option other than Vastar Resources, Inc. Common Stock, such
          Elective Deferrals and/or Member Contributions shall be paid to the
          Trustee in cash;

      (b) To the extent that a Member has directed pursuant to the Plan that his
          or her Elective Deferrals and/or Member Contributions be invested in
          Vastar Resources, Inc. Company Common Stock under the Non-ESOP Part of
          the Plan, such Elective Deferrals and/or Member Contributions may be
          paid to the Trustee in cash, in shares of Vastar Resources, Inc.
          Common Stock, or in any combination thereof; and

      (c) To the extent that a Member has directed pursuant to the Plan that his
          or her Elective Deferrals and/or Member Contributions be invested in
          Vastar Resources, Inc. Common Stock under the ESOP Part of the Plan,
          such Elective Deferrals and/or Member Contributions may be paid to the
          Trustee in cash, in shares of Vastar Resources, Inc. Common Stock, in
          the form of forgiveness of indebtedness on an Acquisition Loan from
          the Company to the Plan, or in any combination thereof.

3.3   Annual Dollar Limitation

      (a) A Member's Elective Deferrals for a calendar year, when considered
          together with the amount of salary reduction elected by the Member
          under any other plan meeting the requirement of (S)401(k) of the Code,
          may not exceed $10,000, as adjusted pursuant to Code (S)415(d).

      (b) Once a Member's Elective Deferrals reach the limitation described in
          Subparagraph 3.3(a), all subsequent deferrals will be suspended for
          the remainder of the calendar year.  Elective Deferrals will
          automatically resume on the following January 1.  Unless the Member
          elects to change the Elective Deferral percent according to Paragraph
          3.1, Elective Deferrals will resume at the rate in effect on the
          suspension date.

                                       11
<PAGE>

      (c) If a Member notifies the Administrator on or before March 31 after the
          close of a calendar year that the Member's total Elective Deferrals
          (within the meaning of (S)402(g)(3) of the Code) for such calendar
          year exceed the limitation of Subparagraph 3.3(a), the Administrator
          shall direct that such excess Elective Deferrals, plus any income and
          minus any loss allocable thereto for the calendar year, be distributed
          no later than the April 15 following notification to the
          Administrator.  A Member is deemed to notify the Administrator of
          Elective Deferrals in excess of the limitation in Subparagraph 3.3(a)
          that arise by taking into account those Elective Deferrals made to the
          Plan or to any other Plan of the Company or a Subsidiary or Affiliate.

      (d) For purposes of Subparagraph 3.3(c), gain or loss allocable to excess
          Elective Deferrals shall be computed under the method used by the Plan
          to allocate gains and losses.

3.4   Actual Deferral Percentage Tests

      The Plan shall comply with the requirements of (S)401(k)(3) of the Code,
      the regulations thereunder, including Treas. Reg. 1.401(k)-1(b) and
      Internal Revenue Service guidance in this regard, which provisions are
      incorporated herein by this reference. To the extent permitted by
      regulations, Matching Contributions described in Paragraph 4.1 and
      nonelective contributions described in Paragraph 4.8 may, at the
      discretion of the Administrator, be deemed Elective Deferrals for purposes
      of this Paragraph 3.4. Effective July 1, 1997, in determining whether the
      Plan satisfies the requirements of (S)401(k)(3) of the Code, the Plan
      shall use the prior-year testing method.

3.5   Distribution of Excess Contributions

      (a) If the average actual deferral percentage test of Paragraph 3.4 is not
          satisfied for a Plan Year, then the Excess Contributions, as defined
          below, and gain or loss allocable thereto, shall be distributed, to
          the extent required under Treasury regulations, no later than the last
          day of the Plan Year following the Plan Year for which the Excess
          Contributions were made.

      (b) Effective July 1, 1997, for purposes of this paragraph, Excess
          Contributions shall consist of the excess of the aggregate amount of
          Elective Deferrals made by or on behalf of the affected Highly
          Compensated Employees over the maximum amount of all such
          contributions permitted under the test of Paragraph 3.4.  In reducing
          the excess contributions hereunder, the reduction shall be first
          applied to the Highly Compensated Employee with the highest percentage
          under Paragraph 3.4.  If reductions are further required to comply
          with Paragraph 3.4, such reductions shall be applied to the Highly
          Compensated Employee with the next highest percentage, and so forth
          until the nondiscrimination test of Paragraph 3.4 is satisfied.  The
          aggregate amount of reductions determined in the preceding sentence
          shall be

                                       12
<PAGE>

          distributed, together with gain or loss allocable thereto, to the
          Highly Compensated Employees with the highest dollar amount of
          Elective Deferrals. The Elective Deferrals of the Highly Compensated
          Employee with the highest dollar amount of Elective Deferrals are
          reduced by the amount required to cause such Highly Compensated
          Employee's Elective Deferrals to equal the Elective Deferral amount of
          the Highly Compensated Employee with the next highest dollar amount of
          Elective Deferrals. If the total amount distributed to the Highly
          Compensated Employee is less than the total Excess Contribution, this
          process shall be repeated until the total Excess Contributions are
          distributed.

      (c) The gain or loss allocable to Excess Contributions shall be determined
          by multiplying the gain or loss allocable to the Member's Elective
          Deferrals for the Plan Year by a fraction, the numerator of which is
          the Excess Contributions made on behalf of the Member for the Plan
          Year, and the denominator of which is the sum of the Member's Account
          balances attributable to the Member's Elective Deferrals amounts on
          the last day of the Plan Year.

3.6   Make-Up Elective Deferrals and Member Contributions

      Notwithstanding any provision of the Plan to the contrary, Elective
      Deferrals and Member Contributions with respect to qualified military
      service may be made in accordance with (S)414(u) of the Code.

                                       13
<PAGE>

                                   SECTION 4
                              COMPANY CONTRIBUTION

4.1  Matching Contribution

     Subject to the provisions of Paragraphs 4.3 and 4.4, for each pay period,
     the Company shall pay to the Trustee a contribution on behalf of each
     Member equal to 160 percent of the Member's Elective Deferrals, including
     Elective Deferrals under Paragraph 3.6, for the pay period which do not
     exceed five percent of the Member's Earnings for the pay period. This
     contribution shall be made no later than 30 days following the date on
     which the related Member Deferrals are made, or as soon as administratively
     practicable, if later, and except for Members who have attained age 55,
     shall be made under the ESOP Part of the Plan.

4.2  Form of Contribution

     Matching Contributions may be made in the form of cash, shares of Vastar
     Resources, Inc. Common Stock, forgiveness of indebtedness on an Acquisition
     Loan from the Company to the Plan, or any combination of the foregoing.

4.3  Members Excluded From Contribution

     The Matching Contribution shall not be made on behalf of a Member described
     in one or more of the following subparagraphs:

     (a) A Member who is an officer of Vastar Resources, Inc.; or

     (b) A Member whose base salary is more than $150,000 on an annualized
         basis.

4.4  Actual Contribution Percentage Test

     With respect to Member Contributions and Matching Contributions, the Plan
     shall comply with the requirements of (S)401(m)(2) of the Code, the
     regulations thereunder, including Treas. Reg. (S)1.401(m)-1(b) and Internal
     Revenue Service guidance in this regard, which provisions are incorporated
     herein by this reference. To the extent permitted by regulations, Elective
     Deferrals described in Paragraph 3.1 and nonelective contributions
     described in Paragraph 4.8 may, at the discretion of the Administrator, be
     taken into account in satisfying the requirements of this Paragraph 4.4.
     Effective July 1, 1997, in determining whether the Plan satisfies the
     requirements of Section 401(m)(2) of the Code, the Plan shall use the
     prior-year testing method.

4.5  Distribution of Excess Aggregate Contributions

                                       14
<PAGE>

     (a)  If the nondiscrimination tests of Paragraph 4.4 are not satisfied for
          a Plan Year, then the Excess Aggregate Contributions, as defined
          below, and any gain or loss allocable thereto, shall be distributed to
          the Member on whose behalf the Excess Aggregate Contributions were
          made no later than the last day of the Plan Year following the Plan
          Year for which such Excess Aggregate Contributions were made.  Member
          Contributions shall be distributed before Matching Contributions.

          Notwithstanding the foregoing, to the extent otherwise required to
          comply with the requirements of (S)401(a)(4) of the Code and
          regulations thereunder, vested Matching Contributions may be
          forfeited.

     (b)  Effective July 1, 1997, for purposes of this paragraph, Excess
          Aggregate Contributions shall consist of the excess of the amount of
          Member Contributions, Matching Contributions, and Elective Deferrals
          (to the extent not used to satisfy the average actual deferral
          percentage test of Section 3.4) made on behalf of the affected Highly
          Compensated Employees over the maximum amount of all such
          contributions permitted under the nondiscrimination tests under
          Paragraph 4.4.  In reducing the Excess Aggregate Contributions
          hereunder, the reduction shall be first applied to the Highly
          Compensated Employee with the highest percentage under Paragraph 4.4.
          If reductions are further required to comply with Paragraph 4.4, such
          reductions shall be applied to the Highly Compensated Employee with
          the next highest percentage, and so forth until the nondiscrimination
          tests of Paragraph 4.4 are satisfied.  The aggregate amount of
          reductions determined in the preceding sentence shall be distributed
          together with gain or loss allocable thereto, to the Highly
          Compensated Employees with the highest dollar amount of Member
          Contributions and Matching Contributions.  The Member Contributions
          and Matching Contributions of the Highly Compensated Employee with the
          highest dollar amount of such contributions are reduced by the amount
          required to cause such Highly Compensated Employee's Member
          Contributions and Matching Contributions to equal the Member
          Contributions and Matching Contributions of the Highly Compensated
          Employee with the next highest dollar amount of such contributions.
          If the total amount distributed to the Highly Compensated Employee is
          less than the total Excess Aggregate Contribution, this process shall
          be repeated until the total Excess Aggregate Contributions are
          distributed.

     (c)  The gain or loss allocable to Excess Aggregate Contributions shall be
          determined by multiplying the gain or loss allocable to such
          contributions by a fraction, the numerator of which is the Excess
          Aggregate Contributions on behalf of the Member for the Plan Year, and
          the denominator of which is the sum of the Member's Account balances
          attributable to Excess Aggregate Contributions on the last day of the
          Plan Year.

                                       15
<PAGE>

4.6  Limitation On The Multiple Use Alternative

     (a)  The sum of the average actual deferral percentage of Highly
          Compensated Employees under Paragraph 3.4 and the average contribution
          percentage of Highly Compensated Employees under Paragraph 4.4 shall
          not exceed the "aggregate limit", as defined in (S)401(m)(9) of the
          Code and the regulations thereunder.

     (b)  If the aggregate limit is exceeded, the average contributions
          percentage of the Highly Compensated Employees shall be reduced in
          accordance with the provisions of Paragraph 4.5.  In lieu of reducing
          the average contribution percentage, the Administrator may reduce the
          average actual deferral percentage of the Highly Compensated Employees
          in accordance with the provisions of Paragraph 3.4.  The reductions
          under this paragraph shall be made only to the extent necessary to
          comply with the restrictions on the multiple use of the alternative
          limitation within the meaning of Code (S)401(m)(9).

4.7  Section 415 Limitations

     (a)  In addition to other limitations set forth in the Plan and
          notwithstanding any other provisions of the Plan, "annual additions"
          made to this Plan (and all other defined contribution plans required
          to be aggregated with the Plan under the provisions of (S)415 of the
          Code) shall not exceed an amount in excess of the limit set forth in
          such section of the Code.  For purposes of calculating such limit
          under (S)415 of the Code, the "limitation year" shall be the calendar
          year.  Elective Deferrals, Member Contributions and Matching
          Contributions in excess of the actual deferral and contribution
          percent tests of Sections 3.4 and 4.4 are considered annual additions
          even if corrected through distribution.

     (b)  If the limitations described in (S)415(c) of the Code are exceeded for
          a Member for a limitation year, the excess will be eliminated as
          follows:

          (i)  Provisions of any other defined contribution plans established by
               the Company or a Subsidiary or Affiliate which have caused the
               limits to be exceeded will be applied; provided, however, that if
               such other Plan is described in (S)401(k) of the Code, the
               provisions of the Plan in which the Member is active as of the
               last day of the limitation year shall be applied before the
               provisions of the Plan in which the Member is inactive.

        (ii)   Amounts attributable to after-tax contributions made by the
               Member to the Plan (or any other plan maintained by the Company
               or any Subsidiary or Affiliate) shall be paid to the Member.

                                       16
<PAGE>

        (iii)  Amounts attributable to Elective Deferrals made by a Member to
               the Plan (or any other plan maintained by the Company or a
               Subsidiary or Affiliate) shall be paid to the Member.

        (iv)   The excess, if any, will be held unallocated in a suspense
               account. The suspense account will be applied to reduce
               contributions for remaining Members in the limitation year, and
               each succeeding limitation year, if necessary. If a suspense
               account is in existence at any time during the limitation year
               pursuant to this subparagraph, it will not participate in the
               allocation of the investment gains and losses.

     (c)  Prior to January 1, 2000, if the limitations described in (S)415(e) of
          the Code are exceeded for a Member for a limitation year, the excess
          will be eliminated by applying the provisions of the defined benefit
          plan in which the Member participates.

4.8  Nonelective Contributions

     (a)  The Company, in its sole discretion, may make a nonelective
          contribution to the Accounts of certain Members who are not highly
          compensated to the extent necessary to satisfy the requirement of
          Paragraph 3.4 and/or 4.4 of the Plan, or to assist the Plan or any
          other plan of the Company or any Subsidiary or Affiliate to satisfy
          the requirements of (S)410(b) of the Code.

     (b)  A contribution under Subparagraph 4.8(a) shall be allocated to
          eligible Members in the ratio that the Earnings of each such Member
          for the Plan Year bears to the total Earnings of all such Member's for
          the Plan Year.

     (c)  The Company shall make contributions necessary to reinstate Members'
          Accounts pursuant to Paragraph 10.8 of the Plan.

     (d)  The Company may make contributions necessary to correct administrative
          errors relative to a Member's Account.


4.9  Exclusive Benefit

     The corpus or income of the trust may not be divested to or used for other
     than the exclusive benefit of the Members and their beneficiaries and to
     defray reasonable expenses of administering the Plan.

                                       17
<PAGE>

                                   SECTION 5
                                FINANCED SHARES


5.1  Acquisition Loans

     Vastar Resources, Inc. by action of its Treasurer, may direct the Trustee
     to incur Acquisition Loans from time to time to finance the acquisition of
     Vastar Resources, Inc. Common Stock (Financed Shares) under the ESOP Part
     of the Plan or to repay a prior Acquisition Loan. For this purpose, an
     installment obligation incurred in connection with the purchase of Vastar
     Resources, Inc. Common Stock shall be treated as an Acquisition Loan.

     An Acquisition Loan shall be for a specific term, shall bear a reasonable
     rate of interest, and shall not be payable on demand except in the event of
     default. An Acquisition Loan may be secured by a pledge of the Financed
     Shares so acquired (or acquired with the proceeds of a prior Acquisition
     Loan which is being refinanced). No other assets of the Plan may be pledged
     as collateral for an Acquisition Loan, and no lender shall have recourse
     against assets of the Plan other than Financed Shares remaining subject to
     pledge. If the lender is a "party in interest" (as defined in (S)3(14) of
     ERISA), the Acquisition Loan must provide that in the event of default,
     assets of the Plan may be transferred to the lender only upon, and to the
     extent of, the failure of the Plan to meet the payment schedule of the
     Acquisition Loan. Any pledge of Financed Shares must provide for the
     release of the shares so pledged as payments on the Acquisition Loan are
     made by the Trustee and such Financed Shares are allocated to Members'
     Accounts under Paragraph 5.2.

     Payments of principal and/or interest on any Acquisition Loan shall be made
     by the Trustee, as directed by the Company, only from: (a) Company
     Contributions paid in cash to enable the Plan to make payments on such
     Acquisition Loan (including Elective Deferrals and Member Contributions, to
     the extent that Members have directed pursuant to the Plan that such
     Elective Deferrals and/or Member Contributions be invested in shares of
     Vastar Resources, Inc. Common Stock under the ESOP Part of the Plan) and
     earnings attributable thereto; (b) the proceeds of any Acquisition Loan and
     the earnings attributable thereto; and (c) any cash dividends received by
     the Plan on the Financed Shares purchased with the proceeds of such
     Acquisition Loan. The payments made with respect to an Acquisition Loan for
     a Plan Year must not exceed the sum of such Matching Contributions,
     Elective Deferrals, Member Contributions, proceeds, earnings, and dividends
     for that Plan Year and prior Plan Years, as reduced by the amount applied
     to make such payments in prior Plan Years. As directed by Vastar Resources,
     Inc. Company, the Trustee also may sell any Financed Shares that have not
     yet been allocated to Members' Accounts and use the proceeds from such sale
     to pay principal and/or interest on the Acquisition Loan used to acquire
     such shares.

                                       18
<PAGE>

5.2  Payments on Acquisition Loan

     The acquisition of Vastar Resources, Inc. Common Stock with the proceeds of
     an Acquisition Loan may be made on the open-market, or from the Company, in
     a single purchase or a series of purchases over a period of time. Prior to
     use for such purchase or purchases, the Acquisition Loan proceeds may be
     invested by the Trustee (as directed by Vastar Resources, Inc.) in
     interest-bearing accounts or instruments. Interest derived therefrom shall
     be applied to make payments on the Acquisition Loan, or, if the Acquisition
     Loan has been repaid in full, shall be allocated as of the last day of the
     Plan Year among the Accounts of all Members who have not terminated
     membership pursuant to Paragraph 2.3 as of such date in proportion to their
     Earnings for the Plan Year.

     All Financed Shares acquired by the Plan shall initially be credited to a
     loan suspense account, and will be allocated to the Members' Accounts only
     as payments on the Acquisition Loan are made. Release from the loan
     suspense account for allocation to Members' Accounts in each Plan Year
     shall be based on shares of stock or other non-monetary units, rather than
     by dollar amount, and shall not be less than the number calculated as
     follows:

     (a)  The number of Financed Shares held in the loan suspense account
          immediately before the release in the current Plan Year shall be
          multiplied by a fraction, the numerator of which is the amount of
          principal and interest paid on the Acquisition Loan for that Plan
          Year, and the denominator of which is the sum of the numerator plus
          the total payments of principal and interest on that Acquisition Loan
          projected to be paid for all future Plan Years.  For this purpose, the
          interest to be paid in future Plan Years is computed by using the
          interest rate in effect as of the last day of the current Plan Year.

     (b)  In lieu of the method described in Subparagraph 5.2(a), the Company
          may elect (as to each  Acquisition Loan) or the provisions of the
          Acquisition Loan may provide for the release of Financed Shares from
          the loan suspense account based solely on the ratio that the payments
          of principal for each Plan Year bear to the total principal amount of
          the Acquisition Loan. This method may be used only if:  (i) the
          Acquisition Loan provides for annual payments of principal and
          interest at a cumulative rate that is not less rapid at any time than
          level annual payments of such amounts for ten years; (ii) interest
          included in any payment on the Acquisition Loan is disregarded only to
          the extent that it would be determined to be interest under standard
          loan amortization tables; and (iii) the entire duration of the
          Acquisition Loan repayment period does not exceed ten years, even in
          the event of a renewal, extension, or refinancing of the Acquisition
          Loan.

                                       19
<PAGE>

          As of each date that payments (other than payments with the proceeds
          of a new Acquisition Loan) are made on an Acquisition Loan, the
          Financed Shares released from the loan suspense account shall be
          allocated to Members' Accounts in proportion to the amounts debited
          from each Member's Account to make the Acquisition Loan payments.

                                       20
<PAGE>

                                   SECTION 6
              INVESTMENT OF MEMBERS' AND FORMER MEMBERS' ACCOUNTS

6.1  Members' and Former Members' Accounts

     The Administrator shall establish and maintain an Account in the name of
     each Member and Former Member. Separate records shall be maintained with
     respect to the portion of a Member's or Former Member's Account
     attributable to Elective Deferrals, Member Contributions, rollovers under
     Section 13, Matching Contributions, and earnings thereon.

6.2  Investment of Elective Deferrals, Member Contribution, Rollovers and
     Certain Matching Contributions

     (a)  In accordance with procedures established by the Administrator, the
          following amounts shall be invested by the Trustee among the
          investment alternatives authorized by the Administrator in the
          proportion indicated by the Member or Former Member in his or her
          investment directions provided to the Administrator, or its delegate:

          (i)   Elective Deferrals;
          (ii)  Member Contributions;
          (iii) Rollovers;
          (iv)  Matching Contributions pursuant to Subparagraph 6.3(b); and
          (v)   Matching Contributions to the Atlantic Richfield Savings Plans
                II and III made prior to July 1, 1988.

     (b)  Notwithstanding anything in the Plan to the contrary, the Trustee may
          limit the daily volume of purchases or sales of Vastar Resources, Inc.
          Common Stock to the extent it believes such action to be in the best
          interest of Members or Former Members.

6.3  Investment of Company Contributions

     (a)  Except as provided in Subparagraph 6.3(b), all Matching Contributions
          and nonelective contributions pursuant to Subparagraph 4.8(a), and any
          amounts of interest attributable to the proceeds of an Acquisition
          Loan allocated to Members' or Former Members' Accounts pursuant to
          Paragraph 5.2 after the Acquisition Loan has been repaid in full,
          shall at all times be invested in Vastar Resources, Inc. Common Stock
          under the ESOP Part of the Plan.  Contributions under Paragraph 4.1
          made in cash shall be applied to purchase shares of Vastar Resources,
          Inc. Common Stock or to make payments on an Acquisition Loan within a
          reasonable time after being paid to the Trustee or after being
          allocated to Members' or Former Members' Accounts.

                                       21
<PAGE>

     (b)  A Member or Former Member who has attained age 55 may invest Company
          Contributions in any of the investment alternatives as set forth in
          Paragraph 6.2.

6.4  Member or Former Member Direction Of Investments

     In accordance with procedures established by the Administrator, each Member
     or Former Member may direct how his or her Account is to be invested among
     the available investment funds. In the event a Member or Former Member
     fails to make an investment election, with respect to all or any portion of
     his or her Account, the Trustee shall invest all or such portion of his or
     her Account in the investment fund to be designated by the Administrator.
     Under procedures established by the Administrator, a Member or Former
     Member may change his or her investment election, with respect to future
     contributions and amounts previously accumulated in the Member's or Former
     Member's Account. Any such change in a Member's or Former Member's
     investment election shall be effective at such time as may be prescribed by
     the Administrator.

6.5  Allocation of Investment Experience

     As of each Valuation Date, the investment funds of the Trust, other than
     shares of Company Common Stock, shall be valued at fair market value, and
     the income, loss, appreciation and deprecation (realized and unrealized),
     and any paid expenses of the Trust attributable to such fund shall be
     apportioned among Member's or Former Member's Accounts within the fund
     based upon the value of each Account within the fund as of the preceding
     Valuation Date.

6.6  Manner and Time of Debiting Distributions

     For any Member or Former Member who is entitled to receive a distribution
     from his or her Account, the amount distributed shall be based upon the
     fair market value of the Member's or Former Member's Account as of the
     Valuation Date immediately preceding the distribution.

6.7  Title of Investments

     All investments will be held in the name of the Trustee or its nominees.

6.8  Voting of Investments

     Except as provided in Paragraph 6.9, the Trustee in accordance with the
     Trust Agreement, shall exercise all voting and other rights associated with
     any investments held in the Plan.

                                       22
<PAGE>

6.9  Voting of Vastar Resources, Inc. Common Stock

     (a)  The Trustee shall vote whole shares of Vastar Resources, Inc. Common
          Stock credited to each Member's or Former Member's Account in
          accordance with such Members' or Former Members' written instructions.
          Fractional shares of Vastar Resources, Inc. Common Stock shall be
          aggregated into whole shares of stock and voted by the Trustee, to the
          nearest whole vote, in the same proportion as shares are to be voted
          by the Trustee pursuant to Members' or Former Members' written
          instructions.  In the absence of voting instructions by one or more
          Members or Former Members, the Trustee shall vote uninstructed shares,
          to the nearest whole vote, in the same proportion as shares are to be
          voted by the Trustee pursuant to Members' or Former Members' written
          instructions.  The Trustee shall vote unallocated shares, to the
          nearest whole vote, in the same proportion as allocated shares are to
          be voted by the Trustee pursuant to Members' or Former Members'
          written instructions.

     (b)  The Trustee shall exercise rights other than voting rights
          attributable to whole shares of Vastar Resources, Inc. Common Stock
          credited to each Member's or Former Member's Account in accordance
          with such Members' or Former Members' written instructions.  Rights
          attributable to fractional shares of Company Common Stock (which for
          this purpose shall be aggregated into whole shares of stock) shall be
          exercised by the Trustee in the same proportion as rights which are
          exercised by the Trustee pursuant to Members' or Former Members'
          written instructions.  In the absence of instructions by one or more
          Members or Former Members, the Trustee shall exercise uninstructed
          rights in the same proportion as rights which are to be exercised by
          the Trustee pursuant to Members' or Former Members' written
          instructions.  The Trustee shall exercise rights attributable to
          unallocated shares in the same proportion as rights attributable to
          allocated shares which are to be exercised by the Trustee pursuant to
          Members' or Former Members' written instructions.  Notwithstanding the
          foregoing, in the absence of directions, the Trustee shall not tender
          shares of  Common Stock in the same proportion as shares are tendered
          pursuant to Member's or Former Member's written instructions.

     (c)  The Trustee shall notify the Members or Former Members of each
          occasion for the exercise of voting rights and rights other than
          voting rights within a reasonable time before such rights are to be
          exercised.  This notification shall include all the information that
          the Company distributes to shareholders regarding the exercise of such
          rights.

                                       23
<PAGE>

6.10 Allocation of Dividends on Vastar Resources, Inc. Common Stock

     (a)  To the extend authorized by the Administrator, any cash dividends
          declared on Vastar Resources, Inc. Common Stock held in a Member's or
          Former Member's Account under the ESOP Part of the Plan as of the
          record date for the dividend shall be paid in cash to the Member or
          Former Member (or, in the event of death, to the Member's or Former
          Member's beneficiary) on, or as soon as possible following, the
          payment date for the dividend.

     (b)  Any cash dividends declared on Vastar Resources, Inc. Common Stock
          held in a loan suspense account as of the record date for the dividend
          shall be used to make payments on the Acquisition Loan used to acquire
          the shares of stock held in such account.

     (c)  Except as provided in Subparagraphs 6.10(a) and (b), all dividends or
          other distributions attributable to shares of Vastar Resources, Inc.
          Common Stock shall be allocated to the Account of the Member or Former
          Member whose Account is credited with such shares.

6.11  Investment Advisory Fees

      The investment advisory fees, if any, incurred for management of any of
      the investment funds are charged to each respective fund.

6.12  Member or Former Member Protection

      No shares of Vastar Resources, Inc. Common Stock held by the ESOP Part of
      the Plan may be subject to a put, call or other option, or buy/sell or
      similar arrangement. The provisions of this Paragraph 6.12 shall continue
      to be applicable to the shares of Vastar Resources, Inc. Common Stock held
      by the ESOP Part of the Plan even if such part ceases to be an Employee
      Stock Ownership Plan under (S)4945(e)(7) of the Code.

6.13  Confidentiality

      The Capital Accumulation Plan Administrative Committee shall be
      responsible for ensuring the adequacy of procedures established by the
      Administrator to safeguard the confidentiality of information relating to
      the purchasing, holding and selling of Vastar Resources, Inc. Common Stock
      and any voting, tender or similar rights relating to such stock.

                                       24
<PAGE>

                                   SECTION 7
                         WITHDRAWALS DURING EMPLOYMENT

7.1  Age 59 1/2 Withdrawal

     A Member who has attained age 59 1/2 may request that all or a portion of
     the Member's Account be paid to the Member.  The request must be made at
     such time and in such manner as prescribed by the Administrator.

7.2  Application and Basis for Hardship Withdrawal

     (a)  A Member may at any time request that the Member's Elective Deferrals
          (but not the earnings thereon) be paid to the Member due to financial
          hardship.  The request must be made to the Administrator at such time
          and in such manner as prescribed by the Administrator and shall
          include such documentation and/or written explanation requested by the
          Administrator.

     (b)  The Administrator shall authorize a withdrawal on account of financial
          hardship only upon making a written determination that the withdrawal
          does not exceed the amount of the immediate and heavy financial need
          of the Member, including amounts withheld for taxes and the amount of
          any early distribution taxes, if any, and that the withdrawal is based
          on the need for funds under one or more of the five following
          circumstances:

          (i)    The payment of unreimbursable medical expenses described in
                 (S)29(d) of the Code previously incurred by the Member, the
                 Member's spouse, or any dependents of the Member (as defined in
                 (S)152 of the Code) or necessary for these persons to obtain
                 medical care;

          (ii)   The payment of all or a portion of the purchase price
                 (excluding mortgage payments) of a principal residence of the
                 Member;

          (iii)  The payment of tuition and related educational expenses for the
                 next 12 months of post-secondary education for the Member, his
                 or her spouse, children or dependents, as defined in Code
                 (S)152;

          (iv)   The need to prevent the eviction of the Member from his or her
                 principal residence or foreclosure on the mortgage of the
                 Member's principal residence; and

          (v)    The need to satisfy a judgment of a federal, state or local
                 court against the Member (such withdrawal will be permitted
                 only if a written determination is made that such withdrawal is
                 necessary in light of immediate and heavy financial need of the
                 Member).

                                       25
<PAGE>

     (c)  Hardship withdrawals shall be paid as follows:

          (i)   A hardship withdrawal shall be paid in a single payment to the
                Member within 60 days following the Administrator's favorable
                determination.

          (ii)  A hardship withdrawal shall not cause a termination of
                Membership in the Plan.

     (d)  As a condition to receiving the withdrawal:

          (i)   The Member must have obtained all distributions and all
                nontaxable loans available as of the date of the withdrawal
                under this Plan and any other employee benefit plan maintained
                by the Company and any Subsidiary or Affiliate;

          (ii)  The Member's contributions to the Plan and any other defined
                contribution or defined benefit employee pension benefit plan
                maintained by the Company and any Subsidiary or Affiliate are to
                be suspended for 12 months; and Elective Deferrals shall be
                suspended for the remainder of the calendar year in which the
                hardship distribution occurs and the calendar year immediately
                following such calendar year.

7.3  Partial Withdrawals of Member Contributions

     (a)  An application for partial withdrawal of funds attributable to Member
          Contributions must be in the form prescribed by the Administrator.
          Distribution will be made as soon as practicable after the date the
          application is received by the Administrator.

     (b)  A Member may make the following partial withdrawals during employment
          with the Company; provided, that (i) partial withdrawals under this
          Paragraph 7.3 are made at not less than six-month intervals, and (ii)
          Member Contributions made prior to January 1, 1987, must be withdrawn
          prior to withdrawal of any other contributions and earnings:

          (i)   Items in the Member's Account derived from Member Contributions,
                and earnings thereon (Member Contributions made prior to January
                1, 1987 must be withdrawn first); and

          (ii)  Items in the Member's Account derived from Company Contributions
                to the Atlantic Richfield Savings Plan II or III made prior to
                July 1, 1988, and earnings thereon.

                                       26
<PAGE>

                                   SECTION 8
             PAYMENTS ON TERMINATION OF MEMBERSHIP OR OTHER REASONS

8.1  Termination of Membership

     (a)  If a Member's membership in the Plan is terminated due to disability,
          termination of employment for any other reason except death, or as the
          result of a sale described in Subparagraphs 2.3(a)(ii) or (iii), the
          Member may receive all items in the Member's Account.  Each Member
          shall be fully vested at all times in all items in the Member's
          Account, whether the same be derived from Elective Deferrals, Member
          Contributions, Company Contributions or rollovers, and earnings
          thereon.

     (b)  Upon the election of the Member who has terminated membership, all
          items in such Member's Account shall be distributed to the Member.
          With respect to a Former Member who does not request a distribution:

          (i)    Notwithstanding anything to the contrary in this Paragraph 8.1,
                 a Former Member's Account shall be distributed in accordance
                 with the provisions of Paragraph 8.7;

          (ii)   In the case of the Former Member's death prior to final
                 distribution, the Former Member's Account shall be distributed
                 in accordance with Paragraph 8.2 of the Plan; and

          (iii)  Except as provided in Paragraph 9.1, no loans or hardship
                 withdrawals may be taken following termination of membership or
                 disability.

     (c)  Notwithstanding anything to the contrary in this Paragraph 8.1, all
          items in the Account of a Member who has terminated membership, and
          whose Account balance is $5,000 or less on the date of determination,
          shall be distributed as soon as administratively practicable following
          the Member's termination of membership, unless the Member elects an
          earlier distribution date.

     (d)  Notwithstanding anything in the Plan to the contrary, when a Former
          Member elects to receive all items in the Former Member's Account and,
          in conjunction therewith, directs that items in his or her Account be
          converted pursuant to Paragraph 6.4, the conversion shall be
          transacted on the later of the first transaction date under the Plan
          following the Administrator's receipt of a request for distribution,
          or the date of termination.  Distribution under this Paragraph 8.1
          shall be made in accordance with the requirements of 409(h) of the
          Code in the form of cash, Company stock or a combination thereof, as
          elected by the Member.  If the Member does not make an election
          hereunder, Company stock will be distributed in kind and all other
          investment alternative shall be converted to cash.

                                       27
<PAGE>

     (e)  Under procedures established by the Administrator, distributions under
          this Paragraph 8.1 may be made under any of the following forms of
          payment, or any combination thereof:

          (i)    Lump sum distribution;

          (ii)   Installment payments, not to exceed 20 years if a specific
                 period is requested; or

          (iii)  Partial withdrawals.

8.2  Death

     (a)  If a Member or Former Member dies and it is established to the Plan's
          satisfaction that the consent required under Subparagraph 8.2(c),
          either has been obtained or was not obtainable, all items in the
          Member's or former Member's Account shall be paid to the beneficiary
          or beneficiaries most recently designated by the Member or Former
          Member in such manner as prescribed by the Administrator. If no such
          designation shall have been made, or if all designated beneficiaries
          should die before the Member or former Member, payment shall be made
          to the Member's or former Member's estate.

     (b)  Except as provided in Subparagraph 8.2(c), if a Member or former
          Member is survived by a spouse, all items in the Member's or former
          Member's Account shall be paid to the Member's spouse.

     (c)  If a Member or former Member is survived by a spouse, all items in a
          Member's or former Member's Account shall be paid to the beneficiary
          or beneficiaries most recently designated by the Member or former
          Member in such manner as prescribed by the Administrator; provided,
          (i) the surviving spouse of the Member or former Member has
          irrevocably consented in writing to the designation of the specific
          beneficiary or beneficiaries, which designation may not be changed
          without spousal consent (or the spouse expressly permits designations
          by the Member or Former Member without any further spousal consent),
          such consent acknowledged the effect of the election and such consent
          was witnessed by a notary public, or (ii) it is established to the
          Plan's satisfaction that the consent required by Subparagraph
          8.2(c)(i), could not be obtained because the surviving spouse could
          not be located or because of such other circumstances as the Secretary
          of Treasury may by regulation prescribe.  Any consent necessary under
          this paragraph shall be effective only with respect to such spouse,
          or, in the event it is established that the consent may not be
          obtained, such designated spouse.  A revocation of a prior designation
          may be made by a Member or Former Member without the consent of the
          spouse at any time prior to the Member's or Former Member's death.  A
          consent that permits designation by the Member or Former Member
          without any requirement for

                                       28
<PAGE>

          further consent by the spouse must acknowledge that the spouse has the
          right to limit consent to a specific beneficiary and that the spouse
          voluntarily elects to relinquish such right.

     (d)  Payment under this Paragraph 8.2 may be made in any form of
          distribution permitted by Paragraph 8.1; provided, however, that all
          items in the Member's or Former Member's Account shall be paid no
          later than December 31 of the calendar year which contains the fifth
          anniversary of the date of the Member's death.  Prior to distribution,
          the beneficiary shall have the rights of a Former Member under Section
          6 and Paragraph 8.1; provided, however, that the beneficiary may not
          elect installments or partial withdrawals under Subparagraphs
          8.1(e)(ii) and (iii) and any Atlantic Richfield Common Stock or Vastar
          Resources, Inc. Common Stock held under the ESOP Part of the Plan
          shall be converted to non-ESOP Atlantic Richfield Common Stock or
          Vastar Resources, Inc. Common Stock.

8.3  Disability

     (a)  A Member who is determined to be disabled may elect to receive a
          distribution of such Member's Account in accordance with Paragraph
          8.1.

     (b)  A Member is disabled if as a result of a medically determinable
          physical or mental impairment resulting from illness or injury the
          Member is unable to perform one or more of the substantial duties of
          the Member's normal work assignment with the Company or of any work
          assignment which the Company determines is available to the Member and
          for which the Member is reasonably qualified by education, training or
          experience to perform as determined by the Administrator after review
          by the entity designated by the Administrator.

8.4  Divorce

     To the extent a Qualified Domestic Relations Order ("QDRO"), as defined in
     (S)414(p) of the Code, is received by the Plan, distributions from a
     Member's Account shall be made to an Alternate Payee, as defined in
     (S)414(p) of the Code, as soon as administratively possible following the
     determination of the order's qualified status.  Prior to such distribution,
     Atlantic Richfield Common Stock or Vastar Resources, Inc. Common Stock in
     the ESOP Part of the Plan shall be converted to non-ESOP Atlantic Richfield
     Common Stock or Vastar Resources, Inc. Common Stock.

8.5  Rollover

     (a)  Notwithstanding anything in this Section 8 to the contrary, a
          distributee, as defined below, may elect, at a time and in the manner
          prescribed by the Administrator, to have all or a portion of a
          distribution under this Section 8, other than any Member Contributions
          and any amount required to be

                                       29
<PAGE>

          distributed pursuant to (S)401(a)(9) of the Code, made payable to an
          eligible retirement plan.

     (b)  For purposes of this Section 8, other than Paragraph 8.2, an eligible
          retirement plan is an individual retirement account or annuity
          described in (S)408(a) or (b) of the Code, an annuity plan described
          in (S)403(a) of the Code or a qualified trust described in (S)401(a)
          of the Code that accepts such distribution.  For purposes of a
          distribution under Paragraph 8.2, an eligible retirement plan is an
          individual retirement account or annuity.

     (c)  Distributee means an Member or Former Member, the surviving spouse of
          such Member or such Member's spouse or former spouse who is an
          alternate payee as defined in (S)414(p) of the Code.

8.6  Notice

     With respect to a Former Member whose account exceeds $5,000, the
     Administrator shall provide the notice required by (S)1.411(a)-11(c) of
     Income Tax Regulations no less than 30 days and no more than 90 days before
     the Former Member's date of distribution; provided, however, that such
     distribution may commence less than 30 days after the required notice is
     given if:

     (a)  The Former Member is informed of the Former Members' right to a period
          of at least 30 days after receiving the notice to consider
          distribution options; and

     (c)  The Former Member, after receiving the notice, affirmatively elects a
          distribution.

     The distribution shall commence no earlier than seven days following the
     date the notice, described above, is provided to the Former Member.

8.7  Distributions

     (a)  All distributions required under the Plan shall be determined and
          made in accordance with the proposed regulations under (S)401(a)(9) of
          the Code, including the minimum distribution incidental benefit
          requirement of (S)1.401(a)(9)-2 of the proposed regulations.

     (b)  The entire interest of a Member must be distributed or begin to be
          distributed no later than the Member's required beginning date.  The
          required beginning date of a Member is the later of the April 1 of the
          calendar year following the calendar year in which the Member attains
          age 70 1/2 or retires, except that benefit distributions to a five-
          percent owner must commence by the April 1 of the calendar year
          following the calendar year in which the Member attains age 70 1/2.

                                       30
<PAGE>

     (c)  As of the first distribution calendar year, as defined below,
          distributions, if not made in a single-sum, may only be made, in
          accordance with Subparagraph 8.1(e), over a period not to exceed:

          (i)  A period certain not extending beyond the life expectancy of the
               Member; or
          (ii) A period certain not extending beyond the joint and last survivor
               expectancy of the Member and a designated beneficiary.

     (d)  The amount required to be distributed for each calendar year,
          beginning with distributions for the first distribution calendar year,
          as defined below, must at least equal the quotient obtained by
          dividing the Member's entire Account as of the last Valuation Date in
          the calendar year preceding the distribution calendar year, by the
          applicable life expectancy.

     (e)  The minimum distribution required for the Member's first
          distribution calendar year must be made on or before the Member's
          required beginning date as defined in Subparagraph 8.7(b).  The
          minimum distribution for other calendar years, including the minimum
          distribution for the distribution calendar year in which the Member's
          required beginning date occurs, must be made on or before December 31
          of that distribution calendar year.

     (f)  If the Member dies after distribution of his or her interest has
          begun on or after the Member's required beginning date, as defined in
          Subparagraph 8.7(b), the remaining portion of such interest will
          continue to be distributed at least as rapidly as under the method of
          distribution being used prior to the Member's death.

     (g)  If the Member dies before distribution of his or her interest
          begins, distribution of the Member's entire interest shall be
          completed by December 31 of the calendar year containing the fifth
          anniversary of the participant's death.

     (h)  The life expectancy (or joint and last survivor expectancy) shall
          be calculated in accordance with Treasury regulations.  Life
          expectancies shall be recalculated annually.

     (i)  The distribution calendar year is a calendar year for which a minimum
          distribution is required. For distributions beginning before the
          Member's death, the first distribution calendar year is the calendar
          year immediately preceding the calendar year which contains the
          Member's required beginning date.

                                       31
<PAGE>

8.8  Distribution of Benefits

     The distribution of benefits under this Plan to a Member who has elected to
     receive such benefits shall be made not later than the 60th day after the
     latest of the close of the Plan Year in which (a) the Member attains age 65
     or such earlier normal retirement age as may be specified in this Plan; (b)
     there occurs the tenth anniversary of the year in which the Member
     commenced membership in this Plan; or (c) the Member's service with the
     Company is terminated.

                                       32
<PAGE>

                                   SECTION 9
                                LOANS TO MEMBERS

9.1  General

     A Member, or a Former Member who is a Party-In-Interest as defined in
     Section 3(14) of ERISA, may borrow from his or her Account in accordance
     with the terms and conditions set forth in this Section 9 and such
     additional rules, consistent with such terms and conditions, which the
     Administrator may establish from time to time.

9.2  Eligibility

     To be eligible to apply for and receive a loan, the Member must be in
     receipt of regular Earnings.  The loan shall be irrevocable upon the
     earlier of:

     (a)  Endorsement of the check representing the loan proceeds, or

     (b)  Expiration of ten days from issuance of such check.

9.3  Loan Amount

     (a)  The maximum loan shall be the lesser of one half of the Member's
          Account or $50,000 (reduced by the highest balance, at any specific
          time, of any outstanding loan or loans during the preceding 12 months
          from this Plan).

     (b)  A loan must be in cash, in increments of $100 and in an amount not
          less than $1,000.

     (c)  The maximum loan amount shall be reduced to the extent necessary
          to prevent each installment of the loan payment, including principal
          and interest, when added to installments under any outstanding loan
          under the Plan, from exceeding 25 percent of a Member's biweekly
          earnings.

     (d)  The loan amount may not exceed the lesser of (i) the amount of the
          Member's Contributions, Elective Deferrals and Company Contributions
          under the Atlantic Richfield Savings Plans II and III made prior to
          July 1, 1988 (excluding assets which originated in the Atlantic
          Richfield Employee Stock Ownership Plan), and earnings thereon at the
          time the loan is made, or (ii) the amount of the security, as
          described hereafter, for the loan.

     (e)  For purposes of this Paragraph 9.3, the value of Common Stock, or any
          other investment alternative will be determined on the Valuation Date
          immediately preceding the date the loan application is received by the
          Administrator under rules established by the Administrator.

                                       33
<PAGE>

9.4  Number of Loans

     A Member may have such number of loans outstanding at any time as shall be
     determined by the Administrator.

9.5  Interest Rate

     A loan shall bear interest at a rate established and communicated by the
     Capital Accumulation Plan Administrative Committee to provide the Plan with
     a rate of return commensurate with prevailing interest rates charged on
     similar commercial loans by persons in the business of lending money.

9.6  Security

     (a)  Each loan must be evidenced by a loan agreement executed by the Member
          for the amount of the loan, including principal and interest,  payable
          to the order of the Trustee.

     (b)  Security for the loans shall equal 50 percent of the assets in the
          Member's Account as of the date of the loan request.

     (c)  The assets which constitute security for the loan will be valued on
          the date of the loan agreement, or at such other time as may be
          determined by the Administrator.

9.7  Funding of the Loan

     (a)  The loan will be funded in accordance with procedures established by
          the Administrator.

     (b)  Under procedures established by the Administrator, investment
          alternatives shall be sold to fund the loan.

9.8  Repayment of the Loan

     (a)  As determined by the Member, but subject to the restriction in
          Subparagraph 9.3(c), a loan may be repaid over a period of one, two,
          three, four or five years or, in the case of a loan used to acquire
          the Member's principal residence, such longer term as determined by
          the Administrator and permitted under (S)72(p) of the Code.

     (b)  Principal and interest shall be amortized, on a level basis, over
          the term of the loan.

                                       34
<PAGE>

     (c)  Except as provided below, payments shall be made by means of
          payroll deductions, the authorization of which shall be irrevocable.

          (i)  The loan may be repaid in full at any time without penalty.

          (ii) If a Member is not in receipt of regular Earnings sufficient to
               permit repayment of the loan, or has terminated employment,
               repayment shall be made by means prescribed by the Administrator.

          Repaid principal and interest shall be credited in accordance with the
          Member's election under Paragraph 6.2.

9.9   Deemed Distribution

      A distribution of the unpaid principal shall be deemed to have been made
      to the Member if the Member fails to make payment under Subparagraph
      9.8(c) for a period of 90 days.

9.10  Default

      If the Member is not in receipt of regular Earnings sufficient to permit
      repayment of the loan and does not make manual repayments for a period
      exceeding 90 days, the loan will be deemed in default and the
      Administrator will realize on the security in accordance with applicable
      laws.

                                       35
<PAGE>

                                   SECTION 10
                                 ADMINISTRATION
               CAPITAL ACCUMULATION PLAN ADMINISTRATIVE COMMITTEE

10.1  Capital Accumulation Plan Administrative Committee

      The Plan shall be administered by a Capital Accumulation Plan
      Administrative Committee. The Committee shall consist of the Senior Vice
      President, Human Resources of Atlantic Richfield Company, who shall serve
      as Chairperson, and not less than two other persons appointed by the
      Chairperson. Members of the Committee shall serve without compensation.
      Vacancies shall be filled by the Chairperson or the Chairperson's
      delegate.

10.2  Rules of Conduct

      The Capital Accumulation Plan Administrative Committee shall adopt such
      rules for the conduct of its business and administration of this Plan as
      it considers desirable; provided, they do not conflict with this Plan.

10.3  Legal, Accounting, Clerical

      The Capital Accumulation Plan Administrative Committee may authorize one
      or more of its members or any agent to act on its behalf and may contract
      for legal, accounting, clerical and other services to carry out this Plan.
      Unless paid by the Company, all expenses of the Company, the Administrator
      and the Plan shall be paid by the Plan, to the extent they constitute
      reasonable expenses of administering the Plan. The Plan may reimburse
      expenses paid directly by the Company or its designee. This provision
      shall be deemed a part of any contract to provide for expenses of Plan
      administration, whether or not the signatory to such contract is, as a
      matter of convenience, the Company or its designee. Notwithstanding the
      foregoing, brokerage commissions, transfer fees and other expenses
      actually incurred in any sale or purchase of Company Common Stock shall be
      equitably added to the cost or subtracted from the proceeds of all
      purchases or sales.

10.4  Interpretation of Provisions

      The Capital Accumulation Plan Administrative Committee shall have full
      discretion and final authority to determine eligibility for benefits and
      to interpret the provisions of this Plan, to decide questions arising in
      its administration, and to establish such other rules for its
      administration as may be desirable.

10.5  Records of Administration

      The Capital Accumulation Plan Administrative Committee shall keep records
      reflecting the administration of this Plan which shall be subject to audit
      by the Company. Members may examine records pertaining directly to
      themselves. At

                                       36
<PAGE>

      least annually, the Capital Accumulation Plan Administrative Committee
      shall have mailed to each Member a statement of his or her Account and
      such statement shall be deemed to have been accepted as correct for all
      purposes of this Plan unless written notice to the contrary is received by
      the Capital Accumulation Plan Administrative Committee or the Trustee
      within 30 days after the date of mailing.

10.6  Claims for Benefits

      Applications for benefits must be made in such manner as prescribed by the
      Administrator. The Administrator shall have full discretion and final
      authority to determine eligibility for benefits and to construe the terms
      of the Plan in acting upon an initial application for benefits or an
      appeal of a denial of an application for benefits. Each application shall
      be acted upon and approved or disapproved within 90 days following its
      receipt by the Administrator. In the event special circumstances require
      an extension of time for reviewing the initial application for benefits,
      the Administrator shall make a determination as soon as practicable but no
      later than 180 days following receipt of the application. If any
      application for benefits is denied, in whole or in part, the Administrator
      shall notify the applicant in writing of such denial and of the
      applicant's right to a review by the Administrator and shall set forth in
      a manner calculated to be understood by the applicant, specified reasons
      for such denial, specific references to pertinent Plan provisions on which
      the denial is based, a description of any additional material or
      information necessary for the applicant to perfect the application, an
      explanation of why such material or information is necessary, and an
      explanation of the Plan's review procedure.

      Any person, or a duly authorized representative thereof, whose application
      for benefits is denied in whole or in part, may appeal from such denial to
      the Administrator for a review of the decision by submitting to the
      Administrator within 60 days after receiving notice of denial, a written
      statement:

      (a)  Requesting a review of the application for benefits by the
           Administrator;

      (b)  Setting forth all of the grounds upon which the request for review is
           based and any facts in support thereof; and

      (c)  Setting forth any issues or comments which the applicant deems
           relevant to the application.

      The Administrator shall act upon each such appeal application within 60
      days after the later of receipt of the applicant's request for review by
      the Administrator or receipt of any additional materials reasonably
      requested by the Administrator from such applicant. In the event special
      circumstances require an extension of time for reviewing the appeal, the
      Administrator shall make a determination as soon as practicable but no
      later than 120 days following receipt of the appeal.

                                       37
<PAGE>

      The Administrator shall make a full and fair review of each such
      application and any written materials submitted by the applicant or the
      Company in connection therewith and may require the Company or the
      applicant to submit within 30 days of written notice by the Administrator
      therefor, such additional facts, documents, or other evidence as the
      Administrator, in its sole discretion, deems necessary or advisable in
      making such a review. The Administrator shall have full discretion in
      making an independent determination of the applicant's eligibility for
      benefits under the Plan and shall have full discretion to construe the
      terms of the Plan in making its review. The decision of the Administrator
      on any application for benefits shall be final and conclusive upon all
      persons.

      If the Administrator denies an application in whole or in part, the
      Administrator shall give written notice of its decision to the applicant
      setting forth in a manner calculated to be understood by the applicant the
      specific reasons for such denial and specific references to the pertinent
      Plan provisions on which the Administrator's decision was based.

10.7  Liability of Committee

      No Member of the Capital Accumulation Plan Administrative Committee shall
      be liable for any action taken in good faith or for the exercise of any
      power given the Capital Accumulation Plan Administrative Committee, or for
      the actions of other members of said Committee unless and except to the
      extent that such liability is imposed under law as a result of a breach by
      such Member of his or her fiduciary responsibilities.

10.8  Unlocated Member

      If the Committee is unable, after reasonable and diligent effort, to
      locate a Member, Former Member or beneficiary entitled to payment under
      the Plan, such payment may be forfeited and used to offset Company
      Contributions or to pay Plan expenses. If the Member, Former Member or
      beneficiary later files a claim for benefit, such benefit will be
      reinstated.

10.9  Legal Representative

      The Capital Accumulation Plan Administrative Committee shall act on
      behalf of the Plan with respect to any claim or cause of action, whether
      arising in the course of administrative or judicial proceedings or
      otherwise, and shall be responsible for initiating, pursuing and defending
      any such claim or cause of action involving the Plan.

                                       38
<PAGE>

                                   SECTION 11
                    AMENDMENTS, DISCONTINUANCE, LIABILITIES

11.1  Amendment

      (a)  Except as provided in Subparagraph 11.1(b), the Plan may be amended
           by the Board of Directors of Vastar Resources, Inc.

      (b)  A committee consisting of the Vice President, Human Resources, the
           Vice President and Controller, the Vice President and General
           Counsel, and the General Tax Office of Vastar Resources, Inc. may
           amend the Plan under the following circumstances:

           (i)   Legally required changes;

           (ii)  Improvement of administrative efficiency;

           (iii) Implementation of contractual commitments made by the Company
                 regarding matters relating to acquisitions, divestitures, joint
                 ventures or mergers and any matter negotiated pursuant to a
                 collective bargaining agreement;

           (iv)  Implementation of any transfer of assets, merger or spin-off of
                 Plan assets among plans within the company; or

           (v)   Implementation of participation in the Plan by Subsidiaries or
                 Affiliates of the Company.

      (c)  No amendment shall reduce the account of any Member as of the date of
           such amendment.

11.2  Termination

      Vastar Resources, Inc. intends to continue this Plan indefinitely but
      reserves the right to terminate it at any time, by action of its Board of
      Directors. If this Plan is terminated, or if there is a complete
      discontinuance of contributions under this Plan by the Company, all
      amounts credited to Accounts of Members shall be held for distribution as
      provided in Section 8.

11.3  Liability of Company

      The Company shall have no liability for payments under this Plan except to
      make the contributions required by Section 4. Any payments under the Plan
      shall be made solely from the fund held by the Trustee.

                                       39
<PAGE>

                                   SECTION 12
                                 MISCELLANEOUS


12.1  Employment

      This Plan shall not give any Member any right to be continued in the
      employment of the Company.

12.2  Benefits Not Assignable

      Except as provided in Paragraph 8.4, no benefit under this Plan shall be
      assignable or transferable in whole or in part, either directly or by
      operation of law or otherwise, and shall not be subject to attachment or
      other process.

12.3  Discharge of Liability

      If the Administrator deems any person incapable of receiving benefits to
      which such person is entitled under this Plan, by reason of minority,
      illness, infirmity, mental incompetency or other incapacity, it may direct
      the Trustee to make payment directly for the benefit or the account of
      such person or to any eligible person selected by the Administrator to
      disburse such payment whose receipt shall be a complete settlement
      therefor.

12.4  Governing Laws

      The Plan shall be governed by and construed in accordance with federal
      laws governing employee benefit plans qualified under the Code or with the
      laws of the State of Delaware to the extent not preempted by federal law.

12.5  Limitation on Mergers

      This Plan may not merge or consolidate with, or transfer any of its assets
      or liabilities to any other plan unless each Member in this Plan would, if
      said other plan were to terminate, receive a benefit immediately after the
      merger, consolidation or transfer which is equal to or greater than the
      benefit such Member would have been entitled to receive immediately before
      the merger, consolidation or transfer if this Plan had terminated.

12.6  Delegation of Fiduciary or Administrative Responsibilities

      Vastar Resources, Inc., by resolution of its Board of Directors or by
      written action of any officer generally or specifically named by such a
      resolution to take such an action, and the Capital Accumulation Plan
      Administrative Committee, by resolution of said Committee, may at any time
      delegate to any other named person or body, or reassume therefrom, any of
      their respective fiduciary responsibilities or

                                       40
<PAGE>

      administrative duties with respect to this Plan, including the power to
      delegate and reassume such responsibilities and duties by written action
      naming the person or body to whom the responsibility has been delegated.
      However, only the immediate delegate of Vastar Resources, Inc., or the
      Capital Accumulation Plan Administrative Committee, or of the Treasurer of
      Vastar Resources, Inc., as the case may be, may, if so authorized by
      Vastar Resources, Inc., said Committee or said Treasurer, delegate any
      such responsibilities or duties.

12.7  Named Fiduciary

      The named fiduciary with respect to this Plan is Vastar Resources, Inc.
      except that (a) as to any matter specified in this Plan as being the
      responsibility or function of the Capital Accumulation Plan Administrative
      Committee, the named fiduciary is said Committee, (b) as to any matter
      specified in the Plan or in the Trust Agreement as being the
      responsibility or function of the Trustee or the Investment Officer, the
      named fiduciary is the Trustee or the Investment Officer, as the case may
      be, and (c) as to any matter specified in the Plan as being the
      responsibility or function of the Treasurer of Vastar Resources, Inc., the
      named fiduciary is such Treasurer.

                                       41
<PAGE>

                                   SECTION 13
                                   ROLLOVERS

13.1  Rollovers from Other Qualified Plans

      An Employee who has had distributed to the Employee all or a portion of
      his or her taxable interest in a plan meeting the requirements of
      (S)401(a) of the Code, including a defined benefit retirement plan of the
      Company or a Subsidiary or Affiliate, (the "Other Plan") may, in
      accordance with procedures approved by the Capital Accumulation Plan
      Administrative Committee, rollover in cash all or a portion of the taxable
      distribution received from the Other Plan to the Plan, provided the
      following conditions are met:

      (a) The rollover occurs on or before the 60th day after the
          Member receives the distribution from the Other Plan;

      (b) The distribution from the Other Plan qualifies as an eligible
          rollover distribution within the meaning of (S)402(c)(4) of the Code;
          and

      (c) The amount rolled over does not exceed the maximum amount
          which may be rolled over in accordance with (S)402(c)(2) of the Code.

13.2  Transfers From Individual Retirement Accounts

      An Employee who receives a distribution from an individual retirement
      account described in (S)408(a) of the Code or an individual retirement
      annuity described in (S)408(b) of the Code which constitutes the entire
      amount of such account or annuity (including earnings thereon), and no
      portion of which is attributable to any source other than a distribution
      from a qualified plan described in Paragraph 13.1, may, in accordance with
      procedures approved by the Capital Accumulation Plan Administrative
      Committee, rollover in cash all or a portion of such distribution to the
      Plan, within 60 days after receiving the distribution.

13.3  Membership

      Notwithstanding anything in the Plan to the contrary, an Employee who
      rolls over funds to the Plan pursuant to Paragraph 13.1 or 13.2, shall,
      upon such rollover, become a Member of the Plan except that the right to
      make Elective Deferrals, Member Contributions or receive Company
      Contributions will remain subject to Paragraph 2.1.

                                       42
<PAGE>

13.4  Administration

      The Administrator shall develop such procedures, including procedures for
      obtaining information from an Employee desiring to make such a transfer,
      as it deems necessary or desirable to enable it to determine that the
      proposed rollover will meet the requirements of this section. Upon
      approval by the Capital Accumulation Plan Administrative Committee, the
      rollover shall be deposited with the Trustee in the Employee's Rollover
      Account.

                                       43
<PAGE>

                                   SECTION 14
                              TOP HEAVY PROVISIONS

If the Plan is or becomes Top Heavy in any Plan Year, the provisions of this
Section 14 will supersede any conflicting provisions in the Plan.

14.1  Definitions

      (a) Key Employee means an Employee, former Employee or an Employee's
          beneficiary who at any time during the determination period is:

          (i)   An officer of the Company who has annual Compensation greater
                than 50 percent of the amount in effect under (S)415(b)(1)(A) of
                the Code for the Plan Year;

          (ii)  One of the ten Employees owning (or considered as owning within
                the meaning of (S)318 of the Code) the largest interest in the
                Company; provided, such Employee's annual Compensation from the
                Company exceeds the dollar limitation under (S)415(c)(1)(A) of
                the Code. If two or more Employees have the same ownership
                interest, the Employee with the greater annual Compensation from
                the Company for the Plan Year shall be considered to own the
                larger interest in the Company;

          (iii) A five percent owner of the Company; or

          (iv)  A one percent owner of the Company who has annual
                Compensation from the Company of more than $150,000.

          The determination period of the Plan is the Plan Year containing the
          Determination Date and the four preceding Plan Years.

          The determination of who is a Key Employee will be made in accordance
          with (S)416(i)(1) of the Code and the regulations thereunder.

     (b)  Top Heavy Plan: For any Plan Year after December 31, 1983, this Plan
          is Top Heavy if any of the following conditions exist:

          (i)   If the Top Heavy Ratio for this Plan exceeds 60 percent and this
                Plan is not part of any Required Aggregation Group or Permissive
                Aggregation Group of plans;

          (ii)  If this Plan is a part of a Required Aggregation Group of plans
                (but which is not part of a Permissive Aggregation Group) and
                the Top Heavy Ratio for the group of plans exceeds 60 percent;
                or

                                       44
<PAGE>

          (iii) If this Plan is a part of a Required Aggregation Group of plans
                and part of a Permissive Aggregation Group and the Top Heavy
                Ratio for the Permissive Aggregation Group exceeds 60 percent.

     (c)  Top Heavy Ratio

          (i)  If the Company maintains one or more defined contribution plans
               (including any Simplified Employee Pension Plan) and the Company
               has not maintained any defined benefit plan which during the
               five-year period ending on the Determination Date(s) has or has
               had accrued benefits, the Top Heavy Ratio for this plan alone or
               for the Required or Permissive Aggregation Group as appropriate
               is a fraction, the numerator of which is the sum of the account
               balances of all Key Employees as of the Determination Date(s)
               [including any part of any account balance distributed in the
               five-year period ending on the Determination Date(s)], and the
               denominator of which is the sum of all account balances
               [including any part of any account balance distributed in the
               five-year period ending on the Determination Date(s)], both
               computed in accordance with (S)416 of the Code and the
               regulations thereunder. Both the numerator and denominator of the
               Top Heavy Ratio are adjusted to reflect any contribution not
               actually made as of the Determination Date, but which is required
               to be taken into account on that date under (S)416 of the Code
               and the regulations thereunder.

          (ii) If the Company maintains one or more defined contribution
               plans (including any Simplified Employee Pension Plan) and the
               Company maintains or has maintained one or more defined benefit
               plans which during the five-year period ending on the
               Determination Date(s) has or has had any accrued benefits, the
               Top heavy Ratio for any Required or Permissive Aggregation Group
               as appropriate is a fraction, the numerator of which is the sum
               of account balances under the aggregated defined contribution
               plan or plans for all Key Employees, determined in accordance
               with Subparagraph 14.1(c)(i), and the Present Value of accrued
               benefits under the aggregated defined benefit plan or plans for
               all Key Employees as of the Determination Date(s), and the
               denominator of which is the sum of the account balances under the
               aggregated defined contribution plan or plans for all Members,
               determined in accordance with Subparagraph 14.1(c)(i), and the
               Present Value of accrued benefits under the defined benefit plan
               or plans for all Members as of the Determination Date(s), all
               determined in accordance with (S)416 of the Code and the
               regulations thereunder.  The accrued benefits under a defined
               benefit plan in both the numerator and denominator of the Top
               Heavy Ratio are adjusted for any distribution of an accrued
               benefit made in the five-year period ending on the Determination
               Date.

                                       45
<PAGE>

          (iii)  For purposes of Subparagraphs 14.1(c)(i) and (c)(ii), the value
                 of account balances and the Present Value of accrued benefits
                 will be determined as of the most recent Valuation Date that
                 falls within or ends with the 12-month period ending on the
                 Determination Date except as provided in (S)416 of the Code and
                 the regulations thereunder for the first and second Plan Years
                 of a defined benefit plan. The account balances and accrued
                 benefits of a Member (A) who is not a Key Employee but who was
                 a Key Employee in a prior-year, or (B) effective January 1,
                 1985, who has not been credited with at least one Hour of
                 Service with a Company maintaining the Plan at any time during
                 the five-year period ending on the Determination Date will be
                 disregarded. The calculation of the Top Heavy Ratio, and the
                 extent to which distributions, rollovers and transfers are
                 taken into account will be made in accordance with (S)416 of
                 the Code and the regulations thereunder. Deductible Member
                 Contributions will not be taken into account for purposes of
                 computing the Top Heavy Ratio. When aggregating plans, the
                 value of account balances and accrued benefits will be
                 calculated with reference to the Determination Dates that fall
                 within the same calendar year.

          (iv)   The accrued benefit of a Member other than a Key Employee shall
                 be determined under the method, (A) if any, that uniformly
                 applies for accrual purposes under all defined benefit plans
                 maintained by the Company, or (B) absent such method, as if
                 such benefits accrued not more rapidly than the slowest accrued
                 rate permitted under the fractional rule of (S)411(b)(1)(C) of
                 the Code.

     (c)  Permissive Aggregation Group: The Required Aggregation Group of plans
          plus any other plan or plans of the Company which, when considered as
          a group with the Required Aggregation Group, would continue to satisfy
          the requirements of (S)401(a)(4) and (S)410 of the Code.

     (e)  Required Aggregation Group means:

          (i)  Each qualified plan of the Company in which at least one Key
               Employee participates or participated at any time during the
               determination period (regardless of whether the plan terminated);
               and

          (ii) Any other qualified plan of the Company which enables a plan
               described in Subparagraph 14.1(e)(i) to meet the requirements of
               (S)401(a)(4) or (S)410 of the Code.

     (f)  Determination Date means for any Plan Year the last day of the
          preceding Plan Year.  For the first Plan Year of the Plan, the last
          day of that year.

                                       46
<PAGE>

     (g)  Valuation Date means December 31 of each year.

     (h)  Present Value: Present Value shall be based on interest rate and
          the mortality tables specified in the Company's defined benefit plan.

     (i)  Compensation means all compensation, as that term is defined for
          (S)415 purposes, but including amounts contributed by the Company
          pursuant to Employee Contribution Agreements which are excludable from
          the Employee's income under Code (S)125, (S)402(e)(3), (S)402(h) and
          (S)403(b).

14.2  Minimum Allocation

     (a)  Except as otherwise provided in Subparagraphs 14.2(b), (c) and
          (d), the Company Contribution allocated on behalf of any Member who is
          not a Key Employee shall not be less than the lesser of three percent
          of such Member's Compensation or in the case where the Company has no
          defined benefit plan which designates this Plan to satisfy (S)401 of
          the Code, the largest percentage of Company Contribution, as a
          percentage of the first $150,000 of the Key Employee's Compensation,
          allocated on behalf of any Key Employee for that year.  The minimum
          allocation is determined without regard to any Social Security
          contribution.  This minimum allocation shall be made even though,
          under other Plan provisions, the Member would not otherwise be
          entitled to receive an allocation, or would have received a lesser
          allocation for the year because of (i) the Member's failure to
          complete 1,000 Hours of Service, or (ii) the Member's failure to make
          mandatory Member Contributions to the Plan, or (iii) Compensation less
          than a stated amount.

     (b)  The provision in Subparagraph 14.2(a), shall not apply to any
          Member who was not employed by the Company on the last day of the Plan
          Year.

     (c)  If Members of this Plan are covered by one or more defined benefit
          plans maintained by the Company or its Subsidiaries, the minimum
          allocation or benefit requirements applicable to Top Heavy plans shall
          first be met by such defined benefit plan or plans.

     (d)  If Members of this Plan are covered by one or more defined
          contribution plans maintained by the Company or its Subsidiaries, and
          are not covered by any defined benefit plans of the Company or its
          Subsidiaries, the minimum allocation requirement will be met by the
          defined contribution plan in which the Employee is an active Member in
          the following order:

          1.   Money Purchase Pension Plan
          2.   Profit Sharing Plan, and
          3.   Stock Bonus Plan

                                       47
<PAGE>

     (e)  For purposes of satisfying the minimum allocation requirements of
          this Paragraph 14.2, Elective Deferrals and Matching Contributions may
          not be taken into account.

14.3  The minimum accrued benefit required [to the extent required to be
      nonforfeitable under (S)416(b)] may not be suspended or forfeited under
      Code (S)411(a)(3)(B) or (S)411(a)(3)(D).

14.4  For any Plan Year in which the Plan is Top Heavy, only the first $150,000
      (or such larger amount as may be prescribed by the Secretary of Treasury
      or the Secretary's delegate) of each Member's annual Compensation will be
      taken into account for purposes of determining benefits under the Plan.

14.5  In any Plan Year in which the Top Heavy Ratio exceeds 60 percent the
      denominators of the defined benefit fraction and defined contribution
      fraction [as previously defined in the Plan] shall be computed using 100
      percent of the dollar limitation instead of 125 percent.  The preceding
      sentence shall not apply to an Employee so long as there are no:

      (a) Company Contribution, forfeitures or voluntary nondeductible
          contributions allocated to such Employee, or

      (b) Accruals for such Employee under any qualified defined benefit
          plan.

14.6  In determining the highest rate of contribution applicable to any Key
      Employee, amounts that such Key Employee elects to defer under an
      arrangement qualified under (S)401(k) of the Code will be counted for the
      purposes of (S)416 of the Code.

                                       48
<PAGE>

                                   SECTION 15
 SPECIAL PROVISIONS APPLICABLE TO EMPLOYEES OF THE COMPANY SECONDED TO SOUTHERN
                             ENERGY MARKETING, L.P.

15.1  Pursuant to an agreement dated as of September 1, 1997, the ("Agreement")
      between the Company and Southern Company Energy marketing L.P. ("SCEM"),
      certain employees of the Company were seconded to SCEM and as of January
      1, 1998, will become SCEM employees following the occurrence of the Second
      Closing (as such term is defined in the Formation Agreement between the
      Company and SEI Holdings, Inc., dated August 8, 1997). Such employees are
      hereinafter referred to as "Transferees."

15.2  The rights and benefits under the Plan of Transferees shall be governed by
      the Plan except as provided in this Section 15.

15.3  Effective December 31, 1997, Atlantic Richfield Company Common Stock,
      Dividends Paid-Out, shall be replaced with Atlantic Richfield Company
      Common Stock, Dividends Reinvested.

15.4  As soon as administratively practicable following termination of
      employment with the Company and commencement of employment with SCEM, each
      Transferee's Account shall be transferred to the SCEM Employees Savings
      Plan. The transfer shall consist of cash and shares of Vastar Resources,
      Inc. and to the extent applicable, Atlantic Richfield Company Common Stock
      held in the Transferee's Account immediately prior to the transfer.

15.5  To effectuate the transfer of assets and liabilities as contemplated by
      this Section 15, the Administrator may suspend the purchase and sales of
      investment alternatives as necessary in the Administrator's sole
      discretion.

                                       49

<PAGE>

                                                                    EXHIBIT 23.1

                      CONSENT OF INDEPENDENT ACCOUNTANTS

We hereby consent to the incorporation by reference in this Registration
Statement on Form S-8 of Vastar Resources, Inc. of our report dated
February 22, 1999, relating to the financial statements, which appears in the
Annual Report on Form 10-K.

                                  /s/ PRICEWATERHOUSECOOPERS LLP


Houston, Texas
December 27, 1999


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