AMENDMENT NO. 10
                               TO
                   ATLANTIC RICHFIELD COMPANY
             1985 EXECUTIVE LONG-TERM INCENTIVE PLAN
                   ___________________________

Pursuant  to  authority contained in resolutions adopted  by  the
Board  of Directors on July 28, 1997, the following amendment  is
hereby made to the Atlantic Richfield Company 1985 Executive Long-
Term Incentive Plan (the "Plan"), effective July 28, 1997.

1.   Article I, Sections 2(b) and 2(e) of the Plan are amended to
     read as follows:

          "(b) "Change of Control" means:
     
                (i)  Consummation (F1) of a reorganization, merger or
     consolidation  or  sale  or  other  disposition  of  all  or
     substantially  all  of  the  assets  of  ARCO  (a  "Business
     Combination"), unless, in each case, following such Business
     Combination:

                     (1)   All  or  substantially  all  of   the
     individuals  and  entities who were the  beneficial  owners,
     respectively, of the then outstanding shares of common stock
     (the  "Outstanding Common Stock") of ARCO and  the  combined
     voting  power  of  the  then outstanding  voting  securities
     entitled to vote generally in the election of directors (the
     "Outstanding  Voting Securities") of ARCO immediately  prior
     to  such Business Combination beneficially own, directly  or
     indirectly, more than 60 percent of, respectively, the  then
     Outstanding  Common Stock and the combined voting  power  of
     the  then  Outstanding Voting Securities  entitled  to  vote
     generally in the election of directors, as the case may  be,
     of  the corporation resulting from such Business Combination
     (including,  without limitation, a corporation which,  as  a
     result   of   such  transaction,  owns  ARCO   or   all   or
     substantially  all  of  ARCO's  assets  either  directly  or
     through one or more subsidiaries) in substantially the  same
     proportions  as their ownership, immediately prior  to  such
     Business  Combination, of the Outstanding Common  Stock  and
     Outstanding Voting Securities, as the case may be;

                    (2)   No  Person (excluding any  corporation
     resulting  from  such Business Combination or  any  employee
     benefit  plan (or related trust) of ARCO or such corporation
     resulting from such Business Combination) beneficially owns,
     directly or indirectly, 25 percent or more of, respectively,
     the  then Outstanding Common Stock of such corporation
     resulting from such Business Combination or the combined
     voting power of the then Outstanding Voting

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(F1) In the case of the vesting of Restricted Stock and Performance-
     Based Restricted Stock under Article III, Section 4(c) and the
     vesting of Stock Options under Article II, Section 2(f), "approval
     by the shareholders of the Company" shall be substituted for
     "consummation" and the exceptions under clause (1) thru (3) shall
     not apply.

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     Securities of such corporation, except to the extent that such
     ownership existed immediately prior to the Business Combination;
     and

                     (3)   At least a majority of the members  of
     the  board  of  directors of the corporation resulting  from
     such  Business  Combination were members  of  the  Incumbent
     Board at the time of the execution of the initial agreement,
     or  of  the action of the Board, providing for such Business
     Combination; or

                (ii)  The acquisition by any Person of beneficial
     ownership  (within the meaning of Rule 13d-3 or  Rule  13d-5
     promulgated under the Exchange Act) of 25 percent (F2) or more
     of  either (A) the Outstanding Common Stock of ARCO  or  (B)
     the   Outstanding  Voting  Securities  of  ARCO;   provided,
     however,  that  for  purposes of this Subsection  (ii),  the
     following  shall not constitute a Change of  Control:   (aa)
     any  acquisition  by any employee benefit plan  (or  related
     trust)  sponsored or maintained by ARCO or  any  corporation
     controlled  by  ARCO; (bb) any acquisition by  ARCO  or  any
     increase  in beneficial ownership resulting solely  from  an
     acquisition by ARCO; (cc) any acquisition by any corporation
     pursuant  to  a  Business Combination  which  complies  with
     clauses  (1),  (2) and (3) of Subsection (i);  or  (dd)  any
     acquisition  directly from ARCO pursuant  to  a  transaction
     (other  than a Business Combination) approved by  the  Board
     after  July  28, 1997; and provided, further,  that  in  any
     event,  without regard to the manner in which the  level  of
     ownership  is  attained, the ownership by any Person  of  40
     percent  or more of the Outstanding Common Stock of ARCO  or
     Outstanding  Voting  Securities of ARCO shall  constitute  a
     Change of Control; or

                (iii)      Individuals who, as of July 28,  1997,
     constitute the Board (the "Incumbent Board") cease  for  any
     reason  to  constitute  at least a majority  of  the  Board;
     provided,  however, that any individual becoming a  director
     subsequent  to  such date whose election, or nomination  for
     election by ARCO's stockholders, was approved by a  vote  of
     at  least  a  majority of the directors then comprising  the
     Incumbent   Board  shall  be  considered  as   though   such
     individual were a member of the Incumbent Board, except that
     any  such  individual  whose initial  assumption  of  office
     occurs  as  a  result  of an actual or  threatened  election
     contest with respect to the election or removal of directors
     or  other  actual or threatened solicitation of  proxies  or
     consents by or on behalf of a Person shall not be considered
     an Incumbent Director (F3); or

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(F2) This percentage shall be 40% in the case of the Vesting of Prospective
     Dividend Share Credits under Article IV, Section 4 of the Plan and the
     Pro Rata Payment of Contingent Restricted Stock under Article III,
     Section b(v) of the Plan.

(F3) This provision shall not apply in the case of the Vesting of Prospective
     Dividend Share Credits under Article IV, Section 4 of the Plan and the
     Pro Rata Payment of Contingent Restricted Stock under Article III,
     Section b(v) of the Plan.

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                (iv)  Approval by the stockholders of ARCO  of  a
     complete liquidation or dissolution of ARCO."

          "(e)  "Company" means ARCO and its Subsidiaries."

2.   Sections (aa), (bb), (cc), (dd), (ee), (ff) and (gg) are added to
Article I, Section 2 of the Plan to  read  as follows:
     
           (aa)  "Anticipatory Change of Control" means  (i)  the
     execution  of an agreement or a written document  which,  if
     the  subject  thereof were consummated, would  result  in  a
     Change of Control; (ii) a public announcement by any Person,
     including ARCO, of an intent to take an action(s) which,  if
     consummated, would result in a Change of Control;  or  (iii)
     the  delivery of a signed, written statement to the  Trustee
     of  the  Change  of  Control Trust  and  ARCO's  Independent
     Auditor  by the Chief Financial Officer and  General
     Counsel of ARCO that an Anticipatory Change of Control is in
     effect,  provided  that, with respect to any  of  the  above
     three  circumstances,  the Anticipatory  Change  of  Control
     shall not be effective until approved by either the Board or
     the Executive Committee of the Board.

           (bb)  "ARCO"  means  Atlantic Richfield  Company,  its
     successors and assigns.

           (cc)  "Change  of  Control  Trust"  means  the  trust
     established  by  ARCO  to provide for  the  payment  of  any
     benefits, in whatever form is required, under this  Plan  on
     and after a Change of Control.
     
           (dd) "Exchange Act" means the Securities Exchange  Act
     of 1934, as amended.
     
           (ee) "Person" means any individual, corporation,  firm
     partnership,  governmental body, entity or group  and  shall
     include  any  person  within  the  meaning  of  13(d)(3)  or
     14(d)(2) of the Exchange Act.

           (ff)  "Prospective Dividend Share Credits"  means  the
     amount of Dividend Share Credits which would be earned  with
     respect  to  a Stock Option during the period commencing  on
     the  date  of  a  Change of Control and  concluding  on  the
     expiration  date  of the term of the Stock Option,  assuming
     (i)  no  exercise  of the Option; (ii) a fixed  Fair  Market
     Value  of  a  share  of Common Stock,  and  (iii)  a  fixed
     dividend, on such Common Stock.  Both Fair Market Value  and
     the  dividend rate shall be determined as of the record date
     of the quarterly dividend on such Common Stock immediately
     preceding the Change of Control.
     
           (gg)  "Special  Plan Administrator" means  the  entity
     designated  in  the Change of Control Trust as  having  full
     Administrative powers under Article I, Section 3 of the Plan
     on and after a Change of Control, including, but not limited

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     to, all interpretive and decision powers reserved to the
     Committee  or the Subcommittee prior  to  a  Change  of Control."
     
3.   Article I, Section 3 of the Plan is amended to read as follows:

     "Section 3.    Administration of the Plan

                (a)  Prior to a Change of Control, the Plan shall
     be administered by the Committee or, where specified herein,
     by  the  Subcommittee.  The Committee  or  Subcommittee,  as
     applicable,  is authorized to interpret the Plan,  to  adopt
     such  rules  and  regulations as may from time  to  time  be
     deemed  necessary for the effective operation of  the  Plan,
     and  to  act  upon all matters relating to the  granting  of
     awards  under  the Plan.  Any determination, interpretation,
     construction or other action made or taken pursuant  to  the
     provisions  of the Plan by or on behalf of the Committee  or
     Subcommittee,  as  applicable, shall be final,  binding  and
     conclusive  for all purposes and upon all persons including,
     without  limitation, the Company, the Company's shareholders
     and  Eligible  Employees and their respective successors  in
     interest.
     
                (b)   On  and After a Change of Control the  Plan
     shall  be  administered  by the Special  Plan  Administrator
     which   shall   have  all  powers  of  the   Committee   and
     Subcommittee described under Subsection 3(a).
     
                (c)   No member of the Committee or Subcommittee,
     or the Special Plan Administrator, as applicable, shall be
     personally liable by reason of any contract or other instrument
     executed by such member, or on such member's behalf, in such
     member's capacity as a member of the Committee or Subcommittee
     nor for any mistake of judgment made in good faith, and the
     Company shall indemnify and hold harmless each member of the
     Committee or Subcommittee, as applicable, and each other officer,
     employee  or  director of the Company to whom  any  duty  or
     power  relating  to the administration or interpretation  of
     the  Plan  has been delegated, against any cost  or  expense
     (including  counsel  fees) or liability (including  any  sum
     paid  in  settlement  of a claim with the  approval  of  the
     Committee  or  Subcommittee)  arising  out  of  any  act  or
     omission in connection with the Plan unless arising  out  of
     such person's own fraud or bad faith.

                (d)   Subject  to  the terms and  limitations  of
     Subsection  1(a) of Article II and Section 1 of Article  III
     of  the  Plan, the Committee or Subcommittee or Special Plan
     Administrator, as applicable, may  at  the  time  of the annual
     grants,  make  adjustments within the Total Investment Value
     applicable to all Eligible Employees  provided  that  any
     reallocation  resulting  from changes  in  individual grants
     may be made only to  Eligible Employees in the same Salary
     Grade Level as  the  affected individuals,  so that the Total
     Investment Value  by  Salary Grade Level may not be exceeded."

                                 - 4 -


4.   Article II, Section 2(d)(i) of the Plan is amended to read as follows:
     
          "(i) If an optionee's Employment is terminated prior to
     entitlement to exercise all or a portion of a grant of Stock
     Options, the optionee will immediately be entitled to exercise
     all of his or her outstanding Stock Options during the remainder
     of the term of the Stock Options, if the optionee's termination
     is   due   to  (1)  total  and  permanent  disability,   (2)
     termination,  other  than for cause,  with  a  right  to  an
     immediate allowance under a retirement plan of the  Company,
     or (3) involuntary termination, other than for cause."
     
5.    Article  II,  Section 2(f) of the Plan  is  re-lettered  as Section
2(g) and a new Article II, Section 2(f) is added to  read as follows:
     
           "(f)   Change  of Control.  Upon the occurrence  of  a
     Change  of  Control,  a  Participant shall  be  entitled  to
     exercise  any  outstanding  Stock  Options  which  are   not
     otherwise exercisable immediately preceding such a Change of
     Control."

6.    Article  III, Section 3(b)(iii) of the Plan is  amended  to
read as follows:

           "(iii)     If  a  grantee's Employment  is  terminated
     within  24  months  following the grant of Performance-Based
     Restricted  Stock due to (1) total and permanent disability;
     (2)  involuntary  termination, other  than  for  cause;  (3)
     termination,  other  than for cause,  with  a  right  to  an
     immediate  retirement allowance under a retirement  plan  of
     the Company; or (4) death, such stock shall be deemed vested
     on the day the grantee's employment is terminated."
     
7.   Article III, Section 3(b)(v) is added to the Plan to read as follows:
     
           "(v) (1)  If a Change of Control occurs following  any
     grant  of  Contingent Restricted Stock, any actual award  of
     Performance-Based  Restricted Stock  to  which  the  grantee
     would  otherwise  be entitled in respect of such  Contingent
     Restricted Stock, based on the Company's Performance Ranking
     for  the year of the Performance Period on the date  of  the
     Change  of  Control  under the applicable  Restricted  Stock
     Payment Schedule, shall be satisfied by the grant of  shares
     of  Common  Stock.  The number of shares shall be determined
     by   multiplying  the  Contingent  Restricted  Stock  by   a
     fraction,  the numerator of which is the number of completed
     months (or fraction thereof) in the Performance Period as of
     the date of the Change of Control and the denominator of which
     is the number of months in such Performance Period.

                     (2)  If a Change of Control under Article I,
     Section 2(e)(i), other than by reason of the application of
     Footnote  1, occurs, and a grantee of Contingent  Restricted
     Stock is terminated by the Company prior to a Person attaining
     an ownership  level  of 40 percent or more of  the  Outstanding
     Shares  of Stock of the Company or the corporation resulting
     from  a  Business  Combination,

                                  - 5 -


     as  defined  in  Article  I, Section  2(e)(i),  any  actual 
     award  of  Performance-Based Restricted  Stock  to which the
     grantee would  otherwise  be entitled, based on the Company's
     performance ranking  as  of the earlier of (A) the end of the
     Performance Period, or (B) the occurrence of a Change of Control
     by reason of the application of Footnote 1 to such subsection,
     shall be multiplied by a fraction, the numerator of which is
     the  number of completed months (or fraction thereof) of the
     Performance  Period as of the grantee's date of  termination
     and the denominator of which is the number of months in such
     Performance  Period, with payment to be made  in  shares  of
     Common Stock."
     
8.   Article  III, Section 4 of the Plan is amended to  read  as follows:
     
     "Section 4.    Waiver and Lapse of Restrictions
     
               (a)  Restrictions upon vesting and transferability
     of  Restricted Stock may be permitted to lapse as originally
     provided  by  the  Subcommittee at the  time  of  grant,  as
     provided  in  the Plan or otherwise as the Subcommittee  may
     determine in its sole discretion.
     
               (b)  Restrictions upon vesting and transferability
     of   Performance-Based  Restricted  Stock  shall  lapse   as
     provided in Section 3 of this Article III.
     
               (c)  All   shares  of  Restricted  Stock   and
     Performance-Based Restricted Stock shall  be  deemed  vested
     upon the occurrence of a Change of Control."

9.   Article III, Section 5(b) of the Plan is amended to read as follows:
     
           "(b)  If, prior to the end of a Performance Period,  a
     grantee of Contingent Restricted Stock terminates Employment
     due  to (i) total and permanent disability; (ii) involuntary
     termination,  other  than for cause; or  (iii)  termination,
     other   than  for  cause,  with  a  right  to  an  immediate
     retirement allowance under a retirement plan of the Company,
     the  grantee  shall  be  paid  the  value  determined  under
     Subsection 5(a) of this Article III as of the date  of  the
     grantee's termination, with payment to be made in shares of
     Common Stock at the end of the Performance Period."
     
10.  Article IV, Section 4 is added to the Plan to read as follows:
     
     "Section 4.    Prospective Dividend Share Credits
     
                (a)   Upon the occurrence of a Change of Control,
     the  Prospective  Dividend Share  Credits  allocable  to  an
     optionee, as of the date of the Change of Control, shall  be
     credited  to  the account of the optionee, as  described  in
     Subsection (b), and no further Dividend Share Credits  shall
     accrue with respect to such optionee.
     
                                 - 6 -


                (b)   As of the date of a Change of Control,  the
     Dividend  Share  Credits that would  be  earned  under  each
     outstanding Stock Option for the remaining term of the Stock
     Option shall be calculated, assuming no further exercises of
     the  Stock Option and using the dividend rate and  the  Fair
     Market  Value  of a Share of Common Stock  as  of  the  most
     recent  dividend record date relating to Common Stock.   The
     resulting number of Dividend Share Credits shall be added to
     the Dividend Share Credits held in the Participant's account
     as  of  the  date  of  the Change of Control  and  all  such
     Dividend  Share  Credits shall be treated as credited  under
     Article  I, Subsection 2(n) of the Plan, and the Participant
     shall  be  entitled to payment in shares of Common Stock  of
     the number of Dividend Share Credits relating to an exercise
     of Stock Options in accordance with Article IV of the Plan."
     
11.  Article V, Section 2 of the Plan is amended to read as follows:
     
     "Section 2.  Adjustment in Terms of Award
     
                  In    the    event    of   a    reorganization,
     recapitalization, stock split, stock dividend,  distribution
     of  assets  other than pursuant to a normal  cash  dividend,
     combination   of   shares,  merger,  consolidation,   rights
     offering, split-up, split-off, spin-off or any other  change
     in  the  corporate structure or shares of the Company (other
     than  a  Change  of  Control), the  Committee  may,  in  its
     discretion,  after  consultation with the  Chairman  of  the
     Board   and   the   President  of  ARCO,  make   appropriate
     adjustments  to  reflect such event in respect  of  (a)  the
     limitation  in  Section 1 of this Article V on  the  maximum
     number  of  shares of Common Stock upon which Stock  Options
     may  be  granted or which may be the subject of a  grant  of
     Restricted Stock or Performance-Based Restricted Stock,  (b)
     the  number  of shares of Common Stock covered by,  and  the
     exercise  price  per share applicable to, outstanding  Stock
     Options, (c) the number of shares of Common Stock covered by
     outstanding  awards of Restricted Stock or Performance-Based
     Restricted Stock, and (d) the number of outstanding Dividend
     Share  Credits  allocated to optionees'  accounts.   In  the
     event  that  the  Committee,  after  consultation  with  the
     Chairman  of the Board and the President of ARCO, determines
     that,  because of a change (other than a Change of  Control)
     in  the Company's business, operations, corporate structure,
     capital  structure, assets or manner in  which  it  conducts
     business,  which it deems to be extraordinary and  material,
     the  terms of awards theretofore made are no longer suitable
     to the objectives which the Committee sought to achieve when
     it  made such awards, it may modify the terms of any or  all
     of such awards in such manner as it may decide is advisable;
     provided, however, that no award may be modified in a manner
     which  would  be inconsistent with the intent of  Subsection
     1(b)  or Section 9 of this Article V, or which would  result
     in an increase in the shares of Performance-Based Restricted
     Stock."

12.  Article V, Section 9 of the Plan is amended to read as follows:

                                 - 7 -


     "Section 9.  Amendment and Discontinuance of the Plan
     
                The Board may amend or discontinue the Plan as it
     shall from time to time consider desirable, provided that:
     
                (a)   Except  as  provided under  Subsection  (c)
     hereof, no amendment shall, without further approval by  the
     holders of a majority of the shares which are represented in
     person or by proxy and entitled to vote on the subject at  a
     meeting  of  shareholders of ARCO, change the terms  of  the
     Plan  so  as  to increase the maximum number of shares  upon
     which  Stock Options may be granted or which may  be  issued
     upon  a  grant  of  Restricted  Stock  or  Performance-Based
     Restricted  Stock or the payment of Dividend  Share  Credits
     from  the amounts described in Subsections 1(a) and  (b)  of
     this  Article V, reduce the minimum Stock Option  price,  or
     extend the maximum Stock Option period.
     
                (b)   Except  as  provided under  Subsection  (c)
     hereof,  no  amendment, discontinuance or termination  shall
     deprive  persons  who  hold shares of Contingent  Restricted
     Stock,  Restricted  Stock  or  Performance-Based  Restricted
     Stock, or who are entitled to exercise Stock Options, or  to
     receive  a settlement of Dividend Share Credits pursuant  to
     the  terms and provisions of the Plan, of their rights  with
     respect thereto.
     
                (c)  No amendment may be made during the period of
     an Anticipatory Change of Control, except that the Board may
     amend  the  Plan  during  such  a  period  as  it  may  deem
     necessary,  upon advice of counsel, to further the  interest
     of  the  Company, its shareholders and the Plan participants
     regarding any legal requirements that may be applicable to a
     Change    of   Control,   including,   without   limitation,
     satisfaction  of any requirements relating to  accomplishing
     "Pooling"  treatment under applicable accounting rules,  and
     any Securities Exchange Act rules or tax rules.

                (d)  The Plan may not be amended or terminated on
     or after a Change of  Control until  all  Outstanding  Stock
     Options  have been exercised or expired and all payments  of
     Contingent Restricted Stock under the Plan have been made."

13.  Article  V,  Section 11 of the Plan is amended  to  read  as follows:

     "Section 11.   Term of Plan

           No  Stock  Options  or  Contingent  Restricted  Stock,
     Restricted Stock or Performance-Based Restricted  Stock  may
     be granted after February 24, 2007."

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Executed this 27th day of March, 1998.


ATTEST                             ATLANTIC RICHFIELD COMPANY


    /s/ ARMINEH SIMONIAN                /s/ JOHN H. KELLY
BY: ______________________         BY:_________________________
                                        John H. Kelly
                                        Senior Vice President
                                        Human Resources

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