AMENDMENT NO. 11
                               TO
                   ATLANTIC RICHFIELD COMPANY
             1985 EXECUTIVE LONG-TERM INCENTIVE PLAN
             ______________________________________

Pursuant  to  the  power  of  amendment  reserved  therein,   the
following  amendment  is  hereby made to the  Atlantic  Richfield
Company  1985  Executive Long-Term Incentive Plan  (the  "Plan"),
effective as of July 28, 1997.

1.   Article  I, Subsections 2(c), (d), (s), (w), (aa), (cc)  and
     (gg) of the Plan are amended to read as follows:

            "(c)   "Committee"   means   the   Organization   and
     Compensation Committee of the Board."

            "(d)  "Common  Stock" means the common stock  of  ARCO
     having a par value of $2.50 per share."

            "(s) "Restriction Period" means the period specified by
     the  Subcommittee  at the time of grant of Restricted  Stock
     during  which the restriction and forfeitability  conditions
     described under Section 2 of Article III apply."

            "(w)  "Subsidiary" means any corporation, the majority
     of  the  voting stock of which, or any partnership or  joint
     venture,  the  majority of the profits interest  or  capital
     interest of which, is owned directly or indirectly  by  ARCO
     or a member of the Comparison Group, as applicable."

            "(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 of ARCO 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."

            "(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."

            "(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 this Plan
     on and after a Change of Control, including, but  not limited

                                  - 1 -

     to, all interpretive and decision powers reserved to
     the  Committee  or the Subcommittee prior  to  a  Change  of
     Control."

2.   Article I, Subsections 2(hh) and 2(ii) are added to the Plan
     to read as follows:

           "(hh)   "Board" means the Board of Directors of ARCO
     established by the Articles of Incorporation of ARCO.
     
            (ii)   "Executive  Committee"  means  the   Executive
     Committee  of  the  Board as established  by  the  Board  of
     Directors of ARCO."
     
3.   Article I, Subsections 3(c) and (d) of the Plan are amended
to read as follows:
     
           "(c)  No  member of the Committee or Subcommittee,  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, 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.   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 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 III, Subsection 5(c) of the Plan is amended to read
as follows:

          "(c)  If, prior to the end of a Performance Period,  a
     grantee of Contingent Restricted Stock terminates Employment
     due  to death, the designated beneficiary

                                  - 2 -

     of the grantee or, absent a beneficiary designation, his or
     her estate, shall be paid the value determined under Subsection
     5(a) of this Article III based on the Company's Performance
     Ranking for the year of the Performance Period which ends closest
     to the grantee's death, with payment to be made in shares of Common
     Stock as soon as practicable following  the end of such year
     of the Performance Period."

6.   Article V, Section 1 of the Plan is amended to read as follows:

           "(a)   The 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  during a calendar year shall be eight-tenths  of  one
     percent (0.8%) of the total issued and outstanding shares of
     Common  Stock as of December 31 of the immediately preceding
     calendar  year.   Any shares of Common Stock  available  for
     grant  that  are  not made the subject of a grant  during  a
     calendar  year,  or portion thereof, will be  available  for
     grant in any subsequent year, or portion thereof, until  the
     end of the term of the Plan.  The number of available shares
     described   in  the  preceding  sentences  is   subject   to
     adjustment as provided in Section 2 of this Article V.   The
     shares shall be made available from authorized Common Stock,
     issued or unissued, or from Common Stock issued and held  in
     the  treasury of the Company as shall be determined  by  the
     Committee.  Shares of Common Stock subject to Stock Options,
     shares  of  Restricted Stock and shares of Performance-Based
     Restricted  Stock that are canceled pursuant  to  Subsection
     2(d) of Article II, Section 2 of Article III or Section 5 of
     Article III of the Plan may be reallocated under the Plan.

           (b)   No  individual may be granted more than  500,000
     shares  of  Restricted  Stock, Performance-Based  Restricted
     Stock  and/or  Stock Options, regardless of the combination,
     in any calendar year."


7.   Article III, Subsection 3(b)(v)(2) of the Plan is amended to
read as follows:

           "(2)  If a Change of Control under Article I,  Section
     2(b)(ii),  other  than  by  reason  of  the  application  of
     Footnote  2, occurs, and a grantee of Contingent  Restricted
     Stock is terminated by the Company after a Person attains an
     ownership level of 25 percent but before a Change of Control
     occurs  for  any  other  reason or  any  Person  attains  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, as  defined  in  Article  I,
     Section  2(b)(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 2 to Article I, Section  2(b)(ii),
     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

                                  - 3 -

     months in such Performance  Period, with payment to be made 
     in  shares  of Common Stock."
     
     
Executed this 5th day of November, 1998.


ATTEST                             ATLANTIC RICHFIELD COMPANY


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

                               - 4 -