SECURITIES AND EXCHANGE COMMISSION
                         Washington, D.C.   20549
                                     
                             ________________
                                     
                                 FORM 10-Q
                             ________________
                                     
                                     
          QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
                      SECURITIES EXCHANGE ACT OF 1934
                                     
                             ________________
                                     
                                     
For the quarterly period ended September 30, 1998     
Commission file number 1-1196

                             ________________
                                     
                                     
                        ATLANTIC RICHFIELD COMPANY
          (Exact name of registrant as specified in its charter)
                                     
                             _________________
                                     

                 Delaware                              23-0371610
       (State or other jurisdiction of               (I.R.S. Employer
        incorporation or organization)              Identification No.)

         515 South Flower Street
         Los Angeles, California                         90071
   (Address of principal executive offices)            (Zip code)

                            __________________
                                     
                                     
                              (213) 486-3511
           (Registrant's telephone number, including area code)

                            __________________
                                     
                                     
                              Not Applicable
              (Former name, former address and former fiscal
                    year, if changed since last report)

      Indicate  by  check mark whether the registrant  (1)  has  filed  all
reports  required  to  be filed by Section 13 or 15(d)  of  the  Securities
Exchange  Act  of 1934 during the preceding 12 months (or for such  shorter
period that the registrant was required to file such reports), and (2)  has
been subject to such filing requirements for the past 90 days.
Yes  X    No
    ---      ---

      Number of shares of Common Stock, $2.50 par value, outstanding as  of
September 30, 1998:  321,220,031.



                      PART I.  FINANCIAL INFORMATION


         ATLANTIC RICHFIELD COMPANY AND CONSOLIDATED SUBSIDIARIES
               CONSOLIDATED FINANCIAL STATEMENTS (Unaudited)
                                     
                     CONSOLIDATED STATEMENT OF INCOME
                                     
                                     Three Months Ended    Nine Months Ended
                                        September 30,        September 30,
                                     ------------------    -----------------
                                       1998       1997      1998      1997
                                       ----       ----      ----      ----
                                               (Restated)           (Restated)
(Millions except per share amounts)
                                                         
Revenues
  Sales and other operating revenues. $ 2,655    $ 3,494   $ 7,755   $10,920
  Other revenues. . . . . . . . . . .     146        110       346       358
                                       ------     ------    ------    ------
                                        2,801      3,604     8,101    11,278
                                       ------     ------    ------    ------
Expenses
  Trade purchases . . . . . . . . . .   1,039      1,581     3,096     5,036
  Operating expenses. . . . . . . . .     919        808     2,013     2,035
  Selling, general and
    administrative expenses . . . . .     187        213       572       597
  Depreciation, depletion and
    amortization. . . . . . . . . . .     546        360     1,334     1,047
  Exploration expenses (including
    undeveloped leasehold
    amortization) . . . . . . . . . .     135        113       410       329
  Taxes other than income taxes . . .     121        147       397       487
  Interest. . . . . . . . . . . . . .     123        114       326       246
                                       ------     ------    ------    ------
                                        3,070      3,336     8,148     9,777
                                       ------     ------    ------    ------

Income (loss) before income taxes,
  minority interest and
  extraordinary item. . . . . . . . .    (269)       268       (47)    1,501
Provision (benefit) for taxes on
  income. . . . . . . . . . . . . . .    (138)        52      (128)      463
Minority interest in earnings of
  subsidiaries. . . . . . . . . . . .       7          9        21        31
                                       ------     ------    ------    ------

Income (loss) from continuing 
  operations before extraordinary
  item. . . . . . . . . . . . . . . .    (138)       207        60     1,007
Income (loss) from discontinued
  operations, net of income taxes
  of $97 and $186 (1998) and
  $(22) and $45 (1997). . . . . . . .     (78)        18        98       209
Gain on disposition of ARCO
  Chemical stock, (net of income
  taxes of $1,540). . . . . . . . . .   1,088          -     1,088         -
Gain on disposition of Lyondell
  Petrochemical stock (net of
  income taxes of $342) . . . . . . .       -        291         -       291
                                       ------     ------    ------    ------

Income before extraordinary item  . .     872        516     1,246     1,507
Extraordinary loss on
  extinguishment of debt (net of
  income taxes of $74). . . . . . . .       -          -         -      (118)
                                       ------     ------    ------    ------
Net income. . . . . . . . . . . . . . $   872    $   516   $ 1,246   $ 1,389
                                       ======     ======    ======    ======

Earned per Share
  Basic
    Continuing operations . . . . . . $ (0.43)   $   .65   $  0.18   $  3.13
    Discontinued operations . . . . .    3.14        .96      3.70      1.56
    Extraordinary loss. . . . . . . .       -          -         -      (.37)
                                       ------     ------    ------    ------
    Net income  . . . . . . . . . . . $  2.71    $  1.61   $  3.88   $  4.32
                                       ======     ======    ======    ======
  Diluted
    Continuing operations . . . . . . $ (0.42)   $   .64   $   .18   $  3.08
    Discontinued operations . . . . .    3.09        .93      3.63      1.52
    Extraordinary loss. . . . . . . .       -          -         -      (.36)
                                       ------     ------    ------    ------
    Net income. . . . . . . . . . . . $  2.67    $  1.57   $  3.81   $  4.24
                                       ======     ======    ======    ======

Cash Dividends Paid per Share of
  Common Stock. . . . . . . . . . . . $ .7125    $ .7125   $2.1375   $2.1125
                                       ======     ======    ======    ======                                     

     The accompanying notes are an integral part of these statements.

                                  - 1 -




                        ATLANTIC RICHFIELD COMPANY
                        CONSOLIDATED BALANCE SHEET
                                     
                                               September 30,   December 31,
                                                    1998           1997
                                               -------------   ------------
                                                                (Restated)
(Millions)
                                                           
Assets
Current assets:
  Cash and cash equivalents. . . . . . . . . . .  $ 1,070        $   434
  Short-term investments . . . . . . . . . . . .      232            222
  Accounts receivable. . . . . . . . . . . . . .      975            929
  Inventories. . . . . . . . . . . . . . . . . .      502            456
  Prepaid expenses and other current assets. . .      307            204
                                                   ------         ------
  Total current assets . . . . . . . . . . . . .    3,086          2,245
                                                   ------         ------
Investments and long-term receivables:
  Investments accounted for on the
    equity method. . . . . . . . . . . . . . . .    1,339            763
  Other investments and long-term receivables. .      742          1,820
                                                   ------         ------
                                                    2,081          2,583
                                                   ------         ------
 
Net property, plant and equipment. . . . . . . .   19,499         13,560

Net assets of discontinued operations. . . . . .      188          2,777
Deferred charges and other assets. . . . . . . .    1,376          1,260
                                                   ------         ------
Total assets . . . . . . . . . . . . . . . . . .  $26,230        $22,425
                                                   ======         ======

     The accompanying notes are an integral part of these statements.
                                     
                                   - 2 -




                        ATLANTIC RICHFIELD COMPANY
                        CONSOLIDATED BALANCE SHEET
                                     
                                                September 30,   December 31,
                                                     1998           1997
                                                -------------   ------------
                                                                 (Restated)
(Millions)
                                                            
Liabilities and Stockholders' Equity
Current liabilities:
  Notes payable . . . . . . . . . . . . . . . . .  $ 1,180        $ 1,456
  Accounts payable. . . . . . . . . . . . . . . .    1,058            948
  Long-term debt due within one year. . . . . . .      126            164
  Taxes payable. . . . . . . . . . . .  . . . . .    1,893            308
  Other . . . . . . . . . . . . . . . . . . . . .    1,046            953
                                                    ------         ------
  Total current liabilities . . . . . . . . . . .    5,303          3,829
                                                    ------         ------

Long-term debt. . . . . . . . . . . . . . . . . .    4,511          3,619
Deferred income taxes . . . . . . . . . . . . . .    3,605          2,661
Other deferred liabilities and credits. . . . . .    3,997          3,396
Minority interest . . . . . . . . . . . . . . . .      257            240
Stockholders' equity:
  Preference stocks . . . . . . . . . . . . . . .        1              1
  Common stock. . . . . . . . . . . . . . . . . .      815            807
  Capital in excess of par value of stock . . . .      851            640
  Retained earnings . . . . . . . . . . . . . . .    7,612          7,054
  Treasury stock. . . . . . . . . . . . . . . . .     (348)          (170)
  Accumulated other comprehensive income (loss) .     (374)           348
                                                    ------         ------
  Total stockholders' equity. . . . . . . . . . .    8,557          8,680
                                                    ------         ------

Total liabilities and stockholders' equity. . . .  $26,230        $22,425
                                                    ======         ======

     The accompanying notes are an integral part of these statements.
                                     
                                  - 3 -

                                     


                        ATLANTIC RICHFIELD COMPANY
                   CONSOLIDATED STATEMENT OF CASH FLOWS

                                                         Nine Months Ended
                                                           September 30,
                                                         -----------------
                                                           1998     1997
                                                           ----     ----
                                                                 (Restated)
(Millions)
                                                             
Cash flows from operating activities:
Income from continuing operations. . . . . . . . . . . . $    60   $   889
Adjustments to reconcile income to net cash
 provided by operating activities:
  Extraordinary loss on extinguishment of debt . . . . .       -       118
  Depreciation, depletion and amortization . . . . . . .   1,334     1,047
  Dry hole expense and undeveloped leasehold amortization    194       131
  Net gain on asset sales. . . . . . . . . . . . . . . .     (56)      (42)
  Income from equity investments . . . . . . . . . . . .     (53)      (10)
  Dividends from equity investments. . . . . . . . . . .       9        15
  Minority interest in earnings of subsidiaries. . . . .      21        31
  Noncash provisions greater than cash payments. . . . .      85        20
  Changes in working capital accounts. . . . . . . . . .    (217)     (137)
  Other. . . . . . . . . . . . . . . . . . . . . . . . .       5      (111)
                                                          ------    ------
    Net cash provided by operating activities. . . . . .   1,382     1,951
                                                          ------    ------
Cash flows from investing activities:
  Union Texas Petroleum acquisition. . . . . . . . . . .  (2,707)        -
  Additions to fixed assets (including dry hole costs) .  (2,477)   (1,742)
  Net cash (used) provided by short-term investments . .      (7)      549
  Investment in LUKARCO. . . . . . . . . . . . . . . . .       -      (201)
  Proceeds from sale of ARCO Chemical stock. . . . . . .   4,593         -
  Proceeds from asset sales. . . . . . . . . . . . . . .   1,169        60
  Investments and long-term receivables. . . . . . . . .    (149)      (98)
  Other. . . . . . . . . . . . . . . . . . . . . . . . .    (166)      (31)
                                                          ------    ------
    Net cash provided (used) by investing activities . .     256    (1,463)
                                                          ------    ------
Cash flows from financing activities:
  Repayments of long-term debt . . . . . . . . . . . . .    (235)   (1,511)
  Proceeds from issuance of long-term debt . . . . . . .     215       110
  Net cash (used) provided by notes payable. . . . . . .    (347)      695
  Dividends paid . . . . . . . . . . . . . . . . . . . .    (688)     (680)
  Treasury stock purchases . . . . . . . . . . . . . . .     (31)     (205)
  Other. . . . . . . . . . . . . . . . . . . . . . . . .      48        39
                                                          ------    ------
    Net cash (used) by financing activities. . . . . . .  (1,038)   (1,552)

Cash flows from discontinued operations. . . . . . . . .      37       293 

Effect of exchange rate changes on cash. . . . . . . . .      (1)       (7)
                                                          ------    ------
Net increase (decrease) in cash and cash equivalents . .     636      (778)

Cash and cash equivalents at beginning of period . . . .     434     1,326
                                                          ------    ------
Cash and cash equivalents at end of period . . . . . . . $ 1,070   $   548
                                                          ======    ======

     The accompanying notes are an integral part of these statements.

                                 - 4 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE A.  Accounting Policies.

Basis of Presentation.

     The foregoing financial information is unaudited and has been prepared
from  the  books  and records of the Company.  Certain previously  reported
amounts  have been restated to conform to classifications adopted in  1998.
In  the  opinion  of  the Company, the financial information  reflects  all
adjustments,  consisting of normal recurring adjustments, necessary  for  a
fair  presentation of the financial position and results of  operations  in
conformity with generally accepted accounting principles.


NOTE B.  Comprehensive Income.

     Effective January 1, 1998, the Company adopted Statement of Financial
Accounting  Standards  (SFAS)  No. 130, "Reporting  Comprehensive  Income."
SFAS  No.  130  established  new rules for the reporting  of  comprehensive
income and its components.  Comprehensive income comprises net income  plus
all  other  changes in equity from nonowner sources.  ARCO's  comprehensive
income  for the three- and nine-month periods ended September 30, 1998  and
1997 was as follows:


                                    Three Months Ended    Nine Months Ended
                                       September 30,         September 30,
                                    ------------------    -----------------
                                     1998        1997      1998        1997
                                     ----        ----      ----        ----
(Millions)
                                                         
Net income . . . . . . . . . . .   $  872       $  516    $1,246     $1,389
After-tax changes in:
  Net unrealized gain (loss)
    on investments (a) . . . . .     (198)         189      (717)       454
  Foreign currency translation
    adjustment . . . . . . . . .       38          (34)      (12)      (131)
  Minimum pension liability. . .        7            -         7          -
                                    -----        -----     -----      -----
Comprehensive income . . . . . .   $  719       $  671    $  524     $1,712
                                    =====        =====     =====      =====

(a) Primarily  related to changes in the fair value of ARCO's investment  in
    LUKOIL,  which  had  a  fair  value of  approximately  $161  million  at
    September  30,  1998,  compared to a fair value  of  approximately  $1.3
    billion  and  $678 million at December 31, 1997 and 1996,  respectively.
    The  unrealized  pretax loss on the LUKOIL investment at  September  30,
    1998 was $182 million.


The new disclosure had no impact on ARCO's net income, financial position,
stockholders' equity or cash flows.

     Accumulated   nonowner   changes  in   equity   (accumulated   other
comprehensive income) at September 30, 1998 and December 31, 1997  were  as
follows:


                                                  September 30,  December 31,
                                                      1998          1997
                                                  -------------  ------------
   (Millions)
                                                  <c >          
   Net unrealized gain (loss) on investments. . .    $(111)        $ 606
   Foreign currency translation adjustment. . . .     (216)         (204) 
   Minimum pension liability. . . . . . . . . . .      (47)          (54)
                                                      ----          ----
     Accumulated other comprehensive income (loss)   $(374)        $ 348
                                                      ====          ====

                                   - 5 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE C.  Interim Segment Information.



Three Months Ended September 30, 1998

                                                  Other
                        Exploration   Refining &  Oper-   Unallocated
(Millions)              & Production  Marketing   ations     Items     Total
                        ------------  ----------  ------  -----------  -----
                                                       
Sales and other
 operating revenues . .   $ 1,518      $1,386     $   39     $    3   $ 2,946
Intersegment revenues .      (268)          -        (20)        (3)     (291)
                           ------       -----      -----      -----    ------
Total . . . . . . . . .   $ 1,250      $1,386     $   19     $    -   $ 2,655
                           ======       =====      =====      =====    ======
Income (loss) from
 continuing operations.   $   (56)     $  108     $   45     $ (235)  $  (138)
Income from discontinued
 operations*. . . . . .         -           -          -      1,010     1,010
                           ------       -----      -----      -----    ------
Net income. . . . . . .   $   (56)     $  108     $   45     $  775   $   872
                           ======       =====      =====      =====    ======

Segment assets. . . . .   $18,762      $3,808     $1,190     $2,470   $26,230
                           ======       =====      =====      =====    ======


December 31, 1997
   (Restated)
Segment assets. . . . .   $ 13,269     $3,565     $1,149     $4,442   $22,425
                           =======      =====      =====      =====    ======


Three Months Ended September 30, 1997
   (Restated)
                                                  Other
                        Exploration   Refining &  Oper-   Unallocated
(Millions)              & Production  Marketing   ations     Items     Total
                        ------------  ----------  ------  -----------  -----
Sales and other
 operating revenues . .   $  2,144     $1,783     $   42     $    5   $ 3,974
Intersegment revenues .       (459)         -        (17)        (4)     (480)
                           -------      -----      -----      -----    ------
Total . . . . . . . . .   $  1,685     $1,783     $   25     $    1   $ 3,494
                           =======      =====      =====      =====    ======
Income from continuing
 operations . . . . . .   $    288     $  136     $   20     $ (237)  $   207
Income from discontinued
 operations*. . . . . .          -          -          -        309       309
                           -------      -----      -----      -----    ------
Net income. . . . . . .   $    288     $  136     $   20     $   72   $   516
                           =======      =====      =====      =====    ======
_____________
* Includes gains on disposition of discontinued operations of $1,088 million
  and $291 million for the periods ended September 30, 1998 and 1997,
  respectively.

                                     - 6 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE C.  Interim Segment Information (Continued).



Nine Months Ended September 30, 1998

                                                  Other
                        Exploration   Refining &  Oper-   Unallocated
(Millions)              & Production  Marketing   ations     Items     Total
                        ------------  ----------  ------  -----------  -----
                                                        
Sales and other
 operating revenues . .   $ 4,424      $ 4,170    $  118     $   19   $ 8,731
Intersegment revenues .      (892)         (12)      (60)       (12)     (976)
                           ------       ------     -----      -----    ------
Total . . . . . . . . .   $ 3,532      $ 4,158    $   58     $    7   $ 7,755
                           ======       ======     =====      =====    ======
Income from continuing
 operations . . . . . .   $   143      $   224    $   98     $ (405)  $    60
Income from discontinued
 operations*. . . . . .         -            -         -      1,186     1,186
                           ------       ------     -----      -----    ------
Net income. . . . . . .   $   143      $   224    $   98     $  781   $ 1,246
                           ======       ======     =====      =====    ======

Nine Months Ended September 30, 1997
   (Restated)
                                                  Other
                        Exploration   Refining &  Oper-   Unallocated
(Millions)              & Production  Marketing   ations     Items      Total
                        ------------  ----------  ------  -----------   -----
                                                        
Sales and other
 operating revenues . .   $ 7,390      $ 5,106    $  135     $   13    $12,644
Intersegment revenues .    (1,653)           -       (59)       (12)    (1,724)
                           ------       ------     -----      -----     ------
Total . . . . . . . . .   $ 5,737      $ 5,106    $   76     $    1    $10,920
                           ======       ======     =====      =====     ======
Income from continuing
 operations . . . . . .   $ 1,061      $   250    $   57     $ (361)   $ 1,007
Income from discontinued
 operations*. . . . . .         -            -         -        500        500
Extraordinary item. . .         -            -         -       (118)      (118)
                           ------       ------     -----      -----     ------
Net income. . . . . . .   $ 1,061      $   250    $   57     $   21    $ 1,389
                           ======       ======     =====      =====     ======
_______________
*  Includes gains on disposition of discontinued operations of $1,088 million
   and $291 million for the periods ended September 30, 1998 and 1997,
   respectively.


     As discussed in Note J, the Company's coal and chemical operations and
investment  in  Lyondell  Petrochemical  Company  ("Lyondell")  have   been
reported  as  discontinued operations.  The income from and net  assets  of
discontinued operations are included with unallocated items in the  segment
presentation  above.   At  December 31, 1997, coal  operations  and  ARCO's
investment  in  Lyondell were included as part of "Other Operations"  for
segment purposes and  chemical operations were shown as a separate segment.
The prior period has been restated to conform to the current presentation.

                                  - 7 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE D.  Acquisition of Union Texas Petroleum Holdings, Inc.

      On  June 16, 1998, ARCO announced the completion of its tender  offer
for  all  outstanding  shares  of Union Texas  Petroleum  Holdings,  Inc.'s
("UTP") common stock.  ARCO purchased the outstanding common stock  of  UTP
for  approximately  $2.5  billion, or $29 per share  in  cash.   ARCO  also
purchased  in  a  tender offer 1,649,500 shares of  UTP's  7.14%  Series  A
Cumulative  Preferred  Stock for approximately $200 million,  or  $122  per
share  in  cash.  UTP was a U.S.-based, non-integrated oil and gas  company
with  substantially  all of its oil and gas producing operations  conducted
outside  of  the  U.S.  in  the United Kingdom sector  of  the  North  Sea,
Indonesia and Pakistan.

      The acquisition is being accounted for as a purchase.  The results of
operations of UTP are included in the consolidated financial statements  of
ARCO as of July 1, 1998.  The cost of the acquisition was allocated on  the
basis  of  the estimated fair value of the assets acquired and  liabilities
assumed.  The following unaudited pro forma summary presents information as
if  UTP had been acquired as of the beginning of the Company's fiscal years
1997  and  1998.   The  pro  forma  amounts  include  certain  adjustments,
primarily  to recognize depreciation, depletion and amortization  based  on
the allocated purchase price of UTP assets, and do not reflect any benefits
from economies which might be achieved from combining operations.  The  pro
forma  information  does not necessarily reflect the  actual  results  that
would  have occurred nor is it necessarily indicative of future results  of
operations of the combined companies:


                                                        Nine Months Ended
                                                          September 30,
                                                        -----------------
                                                         1998       1997
                                                         ----       ----
                                                                 (Restated)
  (Millions)
                                                            
  Sales and other operating revenues . . . . . . . . .  $8,022    $11,456
                                                         =====     ======
  Income from continuing operations before
   extraordinary item. . . . . . . . . . . . . . . . .      13      1,081

  Income from discontinued operations* . . . . . . . .   1,186        526

  Extraordinary loss . . . . . . . . . . . . . . . . .       -       (118)
                                                         -----     ------
  Net income . . . . . . . . . . . . . . . . . . . . .  $1,199    $ 1,489
                                                         =====     ======
  Earned per Share
    Basic
      Continuing operations. . . . . . . . . . . . . .  $  .03    $  3.36
      Discontinued operations. . . . . . . . . . . . .    3.70       1.64
      Extraordinary loss . . . . . . . . . . . . . . .       -       (.37)
                                                         -----     ------
      Net income . . . . . . . . . . . . . . . . . . .  $ 3.73    $  4.63
                                                         =====     ======
    Diluted
      Continuing operations. . . . . . . . . . . . . .  $  .04    $  3.30
      Discontinued operations. . . . . . . . . . . . .    3.62       1.61
      Extraordinary loss . . . . . . . . . . . . . . .       -       (.36)
                                                         -----     ------
      Net income . . . . . . . . . . . . . . . . . . .  $ 3.66    $  4.55
                                                         =====     ======
    _______________
    * Includes gains on disposition of discontinued operations of $1,088
      million and $291 million for the periods ended September 30, 1998
      and 1997, respectively.

                                  - 8 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE E.  Investments.

      At  September 30, 1998 and 1997, investments in debt securities  were
primarily   composed  of  U.S.  Treasury  securities  and  corporate   debt
instruments  and  were  included  in  short-term  investments   and   other
investments  and long-term receivables.  Maturities generally  ranged  from
one  day  to  10  years.  Investments in LUKOIL common  stock  and  Zhenhai
Refining  and  Chemical Company convertible bonds were  included  in  other
investments  and  long-term  receivables.   At  September  30,  1998,   all
investments   were  classified  as  available-for-sale;   there   were   no
investments considered held-to-maturity.  Investments were reported at fair
value, with unrealized holding gains and losses, net of tax, reported in  a
separate component of stockholders' equity.

     The following summarizes investments in securities, at September 30:


                                                      1998       1997
                                                      ----       ----
       (Millions)
                                                          
       Aggregate fair value . . . . . . . . . . .    $  951     $2,017
       Gross unrealized holding losses. . . . . .       200          1
       Gross unrealized holding gains . . . . . .       (19)    (1,104)
                                                      -----      -----
       Amortized cost . . . . . . . . . . . . . .    $1,132     $  914
                                                      =====      =====

      Investment activity for the nine-month periods ended September 30 was
as follows:


                                                      1998       1997
                                                      ----       ----
       (Millions)
                                                          
       Gross purchases. . . . . . . . . . . . . .    $14,493    $5,175
       Gross sales. . . . . . . . . . . . . . . .        339     1,637
       Gross maturities . . . . . . . . . . . . .     13,935     4,494


Gross   realized   gains  and  loss  were  determined   by   the   specific
identification  method  and  for the three- and  nine-month  periods  ended
September 30, 1998 and 1997, were insignificant.


NOTE F.  Inventories.

     Inventories at September 30, 1998 and December 31, 1997 comprised the
following:


                                               September 30,  December 31,
                                                    1998          1997
                                               -------------  ------------
                                                               (Restated)
   (Millions)
                                                          
   Crude oil and petroleum products . . . . . .   $    235      $    247
   Other products . . . . . . . . . . . . . . .         24            24
   Materials and supplies . . . . . . . . . . .        243           185
                                                   -------       -------
     Total. . . . . . . . . . . . . . . . . . .   $    502      $    456
                                                   =======       =======

                                   - 9 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE G.  Capital Stock.

     Detail of the Company's capital stock was as follows:


                                                 September 30,  December 31,
                                                      1998         1997
                                                 -------------  ------------
   (Thousands)
                                                           
   $3.00 Cumulative convertible preference
     stock, par $1 . . . . . . . . . . . . . . .   $     52      $     56
   $2.80 Cumulative convertible preference
     stock, par $1 . . . . . . . . . . . . . . .        580           616
   Common stock, par $2.50 . . . . . . . . . . .    814,582       806,800
                                                    -------       -------
     Total . . . . . . . . . . . . . . . . . . .   $815,214      $807,472
                                                    =======       =======

NOTE H.  Capitalization of Interest.

      Interest expense excluded capitalized interest of $29 million and $11
million, respectively, for the three-month periods ended September 30, 1998
and  1997,  and $66   million and $25 million, respectively, for the  nine-
month periods ended September 30, 1998 and 1997.


NOTE I.  Income Taxes.

     Provision (benefit) for taxes on income:


                                    Three Months Ended    Nine Months Ended
                                       September 30,         September 30,
                                    ------------------    -----------------
                                     1998        1997      1998        1997
                                     ----        ----      ----        ----
                                              (Restated)            (Restated)
(Millions)
                                                           
Federal:
  Current . . . . . . . . . . . .   $ (41)       $125      $ (86)      $398
  Deferred. . . . . . . . . . . .     (66)        (87)       (17)       (78)
                                     ----         ---       ----        ---                             
                                     (107)         38       (103)       320
                                     ----         ---       ----        ---
Foreign:
  Current . . . . . . . . . . . .      19          18         44         89
  Deferred. . . . . . . . . . . .     (40)        (22)       (76)       (34)
                                     ----         ---       ----        ---
                                      (21)         (4)       (32)        55
                                     ----         ---       ----        ---
State:
  Current. . . . . . . . . . . . .      6          35         17        105
  Deferred . . . . . . . . . . . .    (16)        (17)       (10)       (17)
                                     ----         ---       ----        ---
                                      (10)         18          7         88
                                     ----         ---       ----        ---

    Total. . . . . . . . . . . . .  $(138)       $ 52      $(128)      $463
                                     ====         ===       ====        ===

                                  - 10 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


Note I.  Income Taxes (continued).

      Reconciliation of provision for taxes on income with tax  at  federal
statutory rate:


                                               Three Months Ended
                                                  September 30,
                                               ------------------
                                           1998                  1997
                                      -----------------     -----------------
                                                Percent               Percent
                                                  of                     of
                                                Pretax                Pretax
                                      Amount    Income      Amount    Income
                                      ------    -------     ------    -------
                                                               (Restated)
(Millions)
                                                           
Income (loss) before income
 taxes, minority interest and
 extraordinary item. . . . . . . .    $(269)     100.0      $  268     100.0
                                       ====      =====       =====     =====

Tax at federal statutory rate. . .    $ (94)     (35.0)     $   93      35.0
Increase (reduction) in taxes
 resulting from:
  Subsidiary stock transactions. .       (7)      (2.6)        (11)     (4.1)
  Taxes on foreign income in
   excess of statutory rate. . . .        4        1.5          (9)     (3.4)
  State income taxes (net of
   federal effect) . . . . . . . .       (6)      (2.2)         11       4.1
  Tax credits. . . . . . . . . . .      (28)     (10.4)        (26)     (9.7)
  Other. . . . . . . . . . . . . .       (7)      (2.6)         (6)     (2.5)
                                       ----      -----       -----     -----
Provision (benefit) for taxes
 on income . . . . . . . . . . . .    $(138)     (51.3)     $   52      19.4
                                       ====      =====       =====     =====



                                                Nine Months Ended
                                                   September 30,
                                                -----------------
                                            1998                 1997
                                       -----------------    -----------------
                                                 Percent              Percent
                                                   of                   of
                                                 Pretax               Pretax
                                       Amount    Income     Amount    Income
                                       ------    -------    ------    -------
                                                               (Restated)
(Millions)
                                                           
Income (loss) before income
 taxes, minority interest and
 extraordinary item. . . . . . . . .   $ (47)     100.0     $1,501     100.0
                                        ====      =====      =====     =====

Tax at federal statutory rate. . . .   $ (16)     (35.0)    $  525      35.0
Increase (reduction) in taxes
 resulting from:
  Subsidiary stock transactions. . .     (64)    (136.2)       (55)     (3.7)
  Taxes on foreign income in
   excess of statutory rate. . . . .      44       93.6         24       1.6
  State income taxes (net of
   federal effect) . . . . . . . . .       5       10.6         57       3.8
  Tax credits. . . . . . . . . . . .     (87)    (185.1)       (77)     (5.1)
  Other. . . . . . . . . . . . . . .     (10)     (20.2)       (11)     (0.8)
                                        ----      -----       ----     -----
Provision (benefit) for taxes on
 income. . . . . . . . . . . . . . .   $(128)    (272.3)     $ 463      30.8
                                        ====      =====       ====     =====

                                  - 11 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE J.  Discontinued Operations.

      On  June  1,  1998, ARCO disposed of its U.S. coal  operations  in  a
transaction  with   Arch Coal.  Operations disposed of included  the  Black
Thunder and Coal Creek mines in Wyoming, the West Elk mine in Colorado, and
ARCO's  65%  interest in three mines in Utah.  The Colorado and Utah  mines
were  sold outright.  ARCO contributed its Wyoming coal operations and Arch
Coal  transferred various of its coal operations into a new  joint  venture
that is 99% owned by Arch Coal and 1% owned by ARCO.

      The Company expects to dispose of its Australian coal operations as
well.  In the third quarter of 1998 ARCO recorded a $90 million provision
for the estimated loss on the disposal of the U.S. and  Australian coal
assets.  Net proceeds from the sale of U.S. operations have been deferred
in net assets of discontinued operations until the disposition of Australian
coal assets is completed and the actual net loss can be determined.

      In  July  1998, ARCO tendered its 80,000,001 shares of ARCO  Chemical
Company common stock to Lyondell for $57.75 per share, or total cash proceeds
of approximately   $4.6  billion.   ARCO  recorded  an   after-tax  gain  of
approximately $1.1 billion in the third quarter of 1998 from  the  sale  of
the shares.

      In  September  1997, ARCO disposed of its 49.9%  equity  interest  in
Lyondell.  The petrochemical business of UTP will  be disposed of and has
been reported as a discontinued operation as well.

     Revenues and net income from discontinued operations was as follows:


                                     Three Months Ended    Nine Months Ended
                                        September 30,         September 30,
                                     ------------------    -----------------
                                      1998       1997       1998       1997
                                      ----       ----       ----       ----
                                                          
Revenues:

  ARCO Chemical . . . . . . . . .     $290       $928      $1,990     $2,783
  Coal operations . . . . . . . .     $ 61       $135      $  293     $  497
  UTP petrochemical . . . . . . .     $ 23       $  -      $   23     $    -

Net income:

  ARCO Chemical . . . . . . . . .     $ 12       $(31)     $  178     $   37
  Coal operations*  . . . . . . .      (90)         6         (80)        53
  Lyondell. . . . . . . . . . . .        -         43           -        119
  UTP petrochemical . . . . . . .        -          -           -          -
                                       ---        ---       -----      -----
                                      $(78)      $ 18      $   98     $  209
                                       ===        ===       =====      =====
_______________
* The amount for the three-months ended September 30, 1998 is a provision for
  loss on disposal of coal assets.

                                  - 12 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE K.  Earned Per Share.

      The information necessary for the calculation of earned per share  is
as follows:


                               Three Months Ended        Three Months Ended
                               September 30, 1998        September 30, 1997
                               ------------------        ------------------
                            Income Shares Per share   Income Shares Per share
                            ------ ------ ---------   ------ ------ ---------
(Millions, except
 per share amounts)
                                                    
Income from continuing
 operations . . . . . . .   $ (138)                    $207
Less: Preference stock
 dividends* . . . . . . .        -                        -
                             -----                      ---
Income from continuing
 operations available to
 common stockholders -
 basic EPS. . . . . . . .     (138)  321.2   $(0.43)    207   320.7   $0.65
                                     =====                    =====
Income from discontinued
 operations . . . . . . .    1,010   321.2     3.14     309   320.7    0.96
                             -----   =====    -----     ---   =====    ----
Net income available to
 common stockholders -
 basic EPS. . . . . . . .      872   321.2   $ 2.71     516   320.7   $1.61
                                              =====                    ====
Effect of dilutive securities:
Contingently issuable
 shares (primarily
 options) . . . . . . . .               2.5                     3.0
Convertible preference
 stock. . . . . . . . . .        -      3.5               -     3.8
                             -----    -----             ---   -----
Net income available to
 common stockholders and
 assumed conversions -
 diluted EPS. . . . . . .      872   327.2   $ 2.67     516   327.5   $1.57
                                     =====                    =====
Less: income from discon-
 tinued operations. . . .    1,010   327.2     3.09     309   327.5    0.93
                             -----   =====    -----     ---   =====    ----
Income from continuing
 operations available to
 common stockholders and
 assumed conversions -
 diluted EPS  . . . . . .   $ (138)  327.2   $(0.42)   $207   327.5   $0.64
                             =====   =====    =====     ===   =====    ====
_______________
* Dividend rounds to zero for the three-month periods presented.


                                 - 13 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE K.  Earned Per Share (continued).


                            Nine Months Ended           Nine Months Ended
                            September 30, 1998          September 30, 1997
                            ------------------          ------------------
                         Income  Shares  Per share   Income  Shares  Per share
                         ------  ------  ---------   ------  ------  ---------
(Millions, except
 per share amounts)
                                                    
Income from continuing
 operations . . . . . .  $   60                      $1,007
Less: Preference stock
 dividends. . . . . . .      (2)                         (2)
                          -----                       -----
Income from continuing
 operations available
 to common stockholders -
 basic EPS. . . . . . .      58   320.9    $0.18      1,005   321.3    $3.13
                                  =====                       =====
Income from discontinued
 operations . . . . . .   1,186   320.9     3.70        500   321.3     1.56
                                  =====     ----              =====
Income before
 extraordinary item
 available to common
 stockholders -
 basic EPS. . . . . . .   1,244                       1,505
Extraordinary item. . .       -                        (118)  321.3    (0.37)
                          -----                       -----   =====     ----
Net income available to
 common stockholders -
 basic EPS. . . . . . .   1,244    320.9   $3.88      1,387   321.3    $4.32
                                            ====                        ====
Effect of dilutive
 securities:
Contingently issuable
 shares (primarily
 options) . . . . . . .              2.8                        2.0
Convertible preference
 stock. . . . . . . . .       2      3.6                  2     3.9
                          -----    -----              -----   -----
Net income available to
 common stockholders
 and assumed conver-
 sions - diluted EPS. .   1,246    327.3   $3.81      1,389   327.2    $4.24
                                   =====                      =====
Extraordinary item. . .       -                         118   327.2     0.36
Income before             -----                       -----   =====     ----
 extraordinary item 
 available to common
 stockholders and
 assumed conversions -
 diluted EPS. . . . . .   1,246                       1,507 
Less: Income from dis-
 continued operations .   1,186    327.3    3.63        500   327.2     1.52
                          -----    =====    ----      -----   =====     ====
Income from continuing
 operations available to
 common stockholders and
 assumed conversions -
 diluted EPS. . . . . .  $   60    327.3   $0.18     $1,007   327.2    $3.08
                          =====    =====    ====      =====   =====     ====

                                   - 14 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE L.  Supplemental Income Statement Information.

     Taxes other than income taxes comprised the following:


                                  Three Months Ended     Nine Months Ended
                                     September 30,          September 30,
                                  ------------------     -----------------
                                   1998        1997       1998        1997
                                   ----        ----       ----        ----
                                            (Restated)             (Restated)
  (Millions)
                                                          
  Production/severance . . . . .   $ 54        $ 82       $173        $268
  Property . . . . . . . . . . .     39          37        109         107
  Other. . . . . . . . . . . . .     28          28        115         112
                                    ---         ---        ---         ---
    Total. . . . . . . . . . . .   $121        $147       $397        $487
                                    ===         ===        ===         ===


NOTE M.  Supplemental Cash Flow Information.

      Following  is supplemental cash flow information for the nine  months
ended September 30, 1998 and 1997:


                                                         Nine Months Ended
                                                           September 30,
                                                         -----------------
                                                         1998         1997
                                                         ----         ---- 
                                                                   (Restated)
 (Millions)
                                                               
 Gross sales and maturities of short-term investments .  $    171   $  1,696
 Gross purchases of short-term investments. . . . . . .      (178)    (1,147)
                                                          -------    -------
 Net cash (used) provided by short-term investments . .  $     (7)  $    549
                                                          =======    =======

 Gross proceeds from issuance of notes payable. . . . .  $ 12,096   $  5,300
 Gross repayments of notes payable. . . . . . . . . . .   (12,443)    (4,605)
                                                          -------    -------
 Net cash (used) provided by notes payable  . . . . . .  $   (347)  $    695
                             
 Gross noncash provisions charged to income . . . . . .  $    416   $    393
 Reserve reversal from partial tax audit settlements. .         -       (145)
 Cash payments of previously accrued items. . . . . . .      (331)      (228)
                                                          -------    -------
 Noncash provisions greater than cash payments. . . . .  $     85   $     20
                                                          =======    =======

     Interest paid during the nine-month periods ended September 30,  1998
and 1997 was $318 million and $450 million, respectively.

     Income  taxes paid during the nine-month periods ended September  30,
1998 and 1997 were $169 million and $669 million, respectively.


                                  - 15 -


          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE M.  Supplemental Cash Flow Information (continued).

      Excluded from the Consolidated Statement of Cash Flows for  the  nine
months  ended  September 30, 1998 was the issuance of 2,725,030  shares  of
ARCO  common  stock  to a consolidated subsidiary in exchange  for  certain
property, plant and equipment owned by the subsidiary.  The transaction was
recorded at fair market value.

      In conjunction with the acquisition of UTP, liabilities were assumed 
as follows:


               (Millions)
                                                      
               Fair value of assets acquired . . . . . . $3,745
               Cash paid . . . . . . . . . . . . . . . .  2,707
                                                          -----
                 Liabilities assumed . . . . . . . . . . $1,038
                                                          =====


      Excluded from the Consolidated Statement of Cash Flows for the nine
months ended September 30, 1997 was ARCO's use of Lyondell common stock to
redeem its 9% Exchangeable Notes with an outstanding principal amount of
$988 million.

      Changes in working capital accounts for the nine-month periods  ended
September 30, 1998 and 1997 were as follows:


                                                       Nine Months Ended
                                                         September 30,
                                                       -----------------
                                                      1998           1997
                                                      ----           ----
                                                                  (Restated)
(Millions)
                                                               
Changes in working capital - Increase (decrease)
 to cash:
   Accounts receivable. . . . . . . . . . . . . . .   $  71        $ 396
   Inventories. . . . . . . . . . . . . . . . . . .     (18)         (73)
   Accounts payable . . . . . . . . . . . . . . . .      22         (310)
   Other working capital. . . . . . . . . . . . . .    (292)        (150)
                                                       ----         ----
     Total. . . . . . . . . . . . . . . . . . . . .   $(217)       $(137)
                                                       ====         ====


NOTE N.  Other Commitments and Contingencies.

      ARCO  has  commitments, including those related to  the  acquisition,
construction  and development of facilities, all made in the normal  course
of business.

      Following  the  March 1989 EXXON VALDEZ oil spill, numerous  lawsuits
seeking compensatory and punitive damages and injunctions were filed by the
state  of  Alaska, the United States and private plaintiffs against  Exxon,
Alyeska  Pipeline Service Company ("Alyeska") and Alyeska's owner companies
(including  ARCO,  which owns approximately 22%).  Alyeska  and  its  owner
companies  have  settled  the  civil damage claims  by  federal  and  state
governments  and  the  lawsuits  by  private  plaintiffs.   Certain  issues
relating to the liability for the spill remain unresolved between the Exxon
companies, on the one hand, and Alyeska and its owner companies.

                                 - 16 -


           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE N.  Other Commitments and Contingencies (continued).

      ARCO  and  former  producers  of lead pigments  have  been  named  as
defendants  in cases filed by a municipal housing authority, two  purported
classes and several individuals seeking damages and injunctive relief as  a
consequence  of the presence of lead-based paint in certain housing  units.
ARCO  is  also  the  subject of or party to a number of  other  pending  or
threatened legal actions.

      The  State  of Montana is seeking recovery from ARCO of $767  million
based  on  alleged injuries to natural resources resulting from mining  and
mineral processing operations formerly operated by Anaconda.  ARCO and  the
State  have  lodged with the court an agreement to settle for $135  million
the  State's  natural  resource damages at  all  but   three  sites.   That
agreement is contingent upon court approval of that agreement and a related
settlement  agreement between the State, ARCO, the federal  government  and
the Salish and Kootenai Tribes.

     ARCO is subject to other loss contingencies pursuant to federal, state
and local environmental laws and regulations.  These require ARCO to remove
or  mitigate the effects on the environment of the disposal or  release  of
certain  chemical,  mineral and petroleum substances  at   various   sites,
perform certain restoration work on these sites and to pay damages for loss
of   use   and   non-use  values.   ARCO  is  currently  participating   in
environmental  assessments  and  cleanups  under  these  laws  at   federal
Superfund  and  state-managed  sites, as  well  as  other  clean-up  sites.
ARCO  may in the future be involved in additional environmental assessments
and  cleanups, including restoration of natural resources and  damages  for
loss of use and non-use values.  The amount of future costs will depend  on
such factors as the unknown nature and extent of contamination, the unknown
timing, extent and method of the remedial actions which may be required and
the  determination  of ARCO's liability in proportion to other  responsible
parties.   Environmental  loss contingencies include  claims  for  personal
injuries  allegedly caused by exposure to toxic materials  manufactured  or
used by ARCO.

      ARCO  continues to estimate the amount of these costs in periodically
establishing  reserves based on progress made in determining the  magnitude
of remediation costs, experience gained from sites on which remediation has
been  completed, the timing and extent of remedial actions required by  the
applicable  governmental authorities and an evaluation  of  the  amount  of
ARCO's  liability considered in light of the liability and financial where-
withal  of  the  other  responsible parties.  At September  30,  1998,  the
environmental remediation accrual was $882 million.  As the scope of ARCO's
obligations  becomes more clearly defined, there may be  changes  in  these
estimated  costs,  which  might  result in future  charges  against  ARCO's
earnings.

      ARCO's environmental remediation accrual covers federal Superfund and
state-managed  sites  as  well as other clean-up sites,  including  service
stations,   refineries,   terminals,   chemical   facilities,   third-party
landfills,  former  nuclear processing facilities,  sites  associated  with
discontinued  operations and sites formerly owned by ARCO.  ARCO  has  been
named a potentially responsible party ("PRP") for 133 sites.  The number of
PRP  sites in and of itself is not a relevant measure of liability, because
the  nature and extent of environmental concerns varies by site and  ARCO's
share  of responsibility varies from sole responsibility  to  very   little
responsibility.  ARCO reviews all of the PRP sites, along with other  sites
as  to which no claims have been asserted, in estimating the amount of  the
accrual.   ARCO's  future  costs at these sites  could  exceed  the  amount
accrued by as much as $500 million.

                                 - 17 -

          NOTES TO CONSOLIDATED FINANCIAL STATEMENTS - UNAUDITED


NOTE N.  Other Commitments and Contingencies (continued).

      Approximately  55%  of the reserve related to sites  associated  with
ARCO's  discontinued operations, primarily mining activities in the  states
of  Montana, Utah and New Mexico.  Another significant component related to
currently and formerly owned chemical, nuclear processing, and refining and
marketing  facilities,  and other sites which received  wastes  from  these
facilities.   The  remainder related to other sites with  reserves  ranging
from  $1 million to $10 million per site.  No one site represents more than
10%  of  the total reserve.  Substantially all amounts accrued are expected
to be paid out over the next five to six years.

      Claims for recovery of remediation costs already incurred and  to  be
incurred  in the future have been filed against various insurance companies
and other third parties.  Many of these claims have been resolved. ARCO has
neither  recorded  any asset nor reduced any liability in  connection  with
unresolved claims.

      Although  any  ultimate liability arising from  any  of  the  matters
described herein could result in significant expenses or judgments that, if
aggregated  and  assumed to occur within a single fiscal period,  would  be
material to ARCO's results of operations, the likelihood of such occurrence
is  considered remote.  On the basis of management's best assessment of the
ultimate amount and timing of these events, such expenses or judgments  are
not  expected  to  have  a material adverse effect on  ARCO's  consolidated
financial statements.

     The operations and consolidated financial position of ARCO continue to
be  affected  from time to time in varying degrees by domestic and  foreign
political  developments as well as legislation, regulations and  litigation
pertaining  to  restrictions  on  production,  imports  and  exports,   tax
increases,  environmental regulations, cancellation of contract rights  and
expropriation  of  property.  Both the likelihood of such  occurrences  and
their overall effect on ARCO vary greatly and are not predictable.

     These uncertainties are part of a number of items that ARCO has taken
and  will  continue  to  take  into account  in  periodically  establishing
reserves.


Note O. Subsequent Event.

      On  October  31,  1998,  the Company sold to Vastar  Resources,  Inc.
("Vastar")  100% of the capital stock  of  Vastar  Offshore,  Inc. ("VOI"),
formerly known as Western Midway Company for approximately $170 million in
cash and the assumption of $300 million of VOI's  existing indebtedness by
Vastar.  The purchase price has been subsequently reduced by approximately
$35 million to reflect post-closing adjustment items.  ARCO owns an 82.2%
interest in Vastar.

                                  - 18 -


                  MANAGEMENT'S DISCUSSION AND ANALYSIS OF
               FINANCIAL CONDITION AND RESULTS OF OPERATIONS
                                     
                                     
Third Quarter 1998 vs. Third Quarter 1997


Consolidated Earnings

      Net  income  increased in the 1998 third quarter to $872 million,  up
from  the  $516  million reported in the third quarter of  1997.   However,
operating results excluding special items declined to $73 million, compared
to  $431  million  in  the  1997  third quarter.   This  decline  primarily
reflected lower crude oil prices.

      The  1998  third  quarter included a net after-tax  benefit  of  $799
million for special items, consisting of a gain of $1,088 million from  the
sale  of  ARCO's  interest  in  ARCO Chemical  Company  ("ARCO  Chemical"),
partially  offset  by  various  charges.   The  charges  were  for   future
environmental   remediation  and  reclamation  related  to   both   current
operations  and  to natural resource damage liabilities  in  the  state  of
Montana  associated  with  previously  discontinued  mining  operations,  a
provision  for estimated net loss on divestment of coal operations  and  an
impairment writedown of California heavy crude oil properties.

     The 1997 third quarter included a net after-tax benefit of $85 million
for  special  items.  Special item benefits included an after-tax  gain  of
approximately  $291 million from the settlement of 9% Notes  due  September
15, 1997, with Lyondell Petrochemical Company ("Lyondell") common stock, in
addition to tax-related adjustments.  The benefits were partially offset by
charges  for  restructuring  and other actions at ARCO Chemical of $95
million, net of tax and minority interest, and charges of approximately
$140 million after tax for future environmental remediation and reclamation
related to both current operations and to natural resource damage liabilities
in the state of Montana associated with previously discontinued mining
operations.

After-tax Segment Earnings


                              1998                      1997 (Restated)
                    ----------------------------   ---------------------------
                              Less:                          Less:
                             Special                        Special
                              Items                          Items
                     Net     (Charge)  Operating    Net    (Charge)  Operating
                    Income   Benefit    Results    Income   Benefit   Results
                    ------   --------  ---------   ------  --------  ---------
(Millions)
                                                      
Exploration and
 production. . . .  $  (56)  $  (94)     $ 38       $288     $  22      $266
Refining and
 marketing . . . .     108        -       108        136         -       136
Other operations .      45       17        28         20        (3)       23
Interest expense .     (92)       -       (92)       (78)        -       (78)
Other unallocated
 expenses. . . . .    (143)    (122)      (21)      (159)     (125)      (34)
                     -----    -----       ---        ---      ----       ---
Income (loss)
 from continuing
 operations. . . .    (138)    (199)       61        207      (106)      313
Income (loss)
 from discontinued
 operations. . . .     (78)     (90)       12         18      (100)      118
Gain on disposition
 of stock* . . . .   1,088    1,088         -        291       291         -
                     -----    -----       ---        ---      ----       ---

  Net income . . .  $  872   $  799      $ 73       $516     $  85      $431
                     =====    =====       ===        ===      ====       ===

*1998:  Approximate 82% interest in ARCO Chemical; 1997:  49.9% interest in
Lyondell.

                                  - 19 -


     As the result of the sale of ARCO's 80 million shares of ARCO Chemical
common  stock  in July 1998, the 1998 results from operations  reflect  the
chemical   operations  as  discontinued  along  with  the  worldwide   coal
operations discontinued in the first quarter 1998.  In September 1997, ARCO
disposed of its 49.9% interest in Lyondell.  The 1997 results  have  been
restated to reflect all of these operations as discontinued.


Exploration and Production

     ARCO's operating results from worldwide oil and gas exploration and
production operations in 1998 were significantly impacted by lower crude
oil prices.  While the Union Texas Petroleum ("UTP") properties purchased
in 1998 contributed to an 11% increase in production volumes, the revenues
from that production were more than offset by the depreciation, depletion
and operating costs associated with those properties.  The 1998 third
quarter included special items primarily related to the writedown of the
California heavy oil holdings.  The 1997 third quarter included a net
benefit from special items related to a United Kingdom tax rate change
and a gain on asset sale, partially offset by a leasehold writedown. 


Average Oil and Gas Prices


                                                        1998      1997
                                                        ----      ----
                                                           
   U.S.
     Petroleum liquids - per barrel (bbl) 
       Alaska . . . . . . . . . . . . . . . . . . . .  $ 7.84    $13.26
       Lower 48, including Vastar . . . . . . . . . .  $10.47    $15.77
       Composite average price. . . . . . . . . . . .  $ 8.76    $14.10
     Natural gas - per thousand cubic feet (mcf). . .  $ 1.75    $ 1.87

   International
     Petroleum liquids - per bbl. . . . . . . . . . .  $10.96    $17.30
     Natural gas - per mcf. . . . . . . . . . . . . .  $ 2.29    $ 2.51
     Indonesia liquefied natural gas (LNG)- per mcf .  $ 2.29    $    -


Petroleum Liquids and Natural Gas Production


                                                        1998       1997
                                                        ----       ----
                                                            
   Net Production*
   U.S.
     Petroleum liquids - bbl/day
       Alaska . . . . . . . . . . . . . . . . . . .    334,600    359,200
       Vastar . . . . . . . . . . . . . . . . . . .     44,800     49,600
       Other Lower 48 . . . . . . . . . . . . . . .    136,400    130,800
                                                     ---------  ---------
         Total. . . . . . . . . . . . . . . . . . .    515,800    539,600
     Natural gas - mcf/day. . . . . . . . . . . . .  1,163,500  1,066,700

     Barrels of oil equivalent - (BOE)/day. . . . .    709,700    717,400

   International
     Petroleum liquids - bbl/day. . . . . . . . . .    165,500     80,800
     Natural gas - mcf/day. . . . . . . . . . . . .    883,500    760,200
     BOE/day. . . . . . . . . . . . . . . . . . . .    312,800    207,500

     Total net production - BOE/day . . . . . . . .  1,022,500    924,900
   __________
   * Includes ARCO's share of production from equity affiliates.  For BOE
     calculation, natural gas is converted at the ratio of 6 mcf to 1 barrel
     of liquid.

                                   - 20 -


     The increase  in  international petroleum liquids  and  natural  gas
production primarily reflected 120,100 barrels of oil equivalent per day
contributed from UTP properties purchased at the end of the second quarter
of 1998.  In addition, petroleum liquids production increased at the Rhourde
el Baguel field in Algeria.  Production from United Kingdom natural gas
fields decreased by approximately 90 million cubic feet per day, as a result
of the timing of gas takes.

     The decline in U.S. petroleum liquids production primarily reflected a
24,600  barrel-per-day decrease in Alaskan production due to natural  field
decline.  The increase in U.S. natural gas production primarily reflected a
10%  increase in Vastar Resources, Inc. ("Vastar") production levels from
offshore and onshore fields.

     In  a  transaction  consummated  in  October  1998,  ARCO  exchanged
California  heavy  crude  oil properties currently producing  approximately
37,000 barrels per day for Gulf of Mexico exploration acreage and properties,
production from which is expected to average 180 million cubic feet of gas
equivalent, net of divestitures, in 1999.


Refining and Marketing

     The  decline in earnings in 1998 primarily resulted from lower  light
product margins. Margins were lower because West Coast gasoline prices fell
more  than  crude  oil  prices in the 1998 third  quarter.   The  increased
gasoline sales volumes reflected increased volumes at existing ARCO  retail
outlets.   The  decline in jet fuel sales reflected both a  change  in  the
production  mix  and  a turnaround at ARCO's Cherry Point  refinery  during
third quarter 1998.


West Coast Petroleum Products Sales


                                                           1998      1997
                                                           ----      ----
    Volumes (Barrels/day)
                                                             
    Gasoline. . . . . . . . . . . . . . . . . . . . .    304,900   298,800
    Jet . . . . . . . . . . . . . . . . . . . . . . .     97,100   118,400
    Distillate. . . . . . . . . . . . . . . . . . . .     83,500    76,100
    Other . . . . . . . . . . . . . . . . . . . . . .     75,400    79,300
                                                         -------   -------
    Total . . . . . . . . . . . . . . . . . . . . . .    560,900   572,600
                                                         =======   =======

Other Operations

     The 1998 and 1997 results included earnings from Lower 48 pipeline and
aluminum operations.  The increase in 1998 earnings included special  items
of  $17  million  from the sale of pipeline assets.  The improved operating
results primarily reflected increased earnings from  the  Seaway pipeline
joint venture.


Discontinued Operations

     After-tax  earnings from discontinued operations in  the  1998  third
quarter  totaled  $12  million  before provision  of  $90  million  for  an
estimated   loss  on  the  divestment  of  coal  properties.   Discontinued
operations  included  ARCO's interest in ARCO  Chemical  for  part  of  the
quarter and Australian coal operations.


                                  - 21 -


     In the 1997 third quarter, ARCO's discontinued operations earned $118
million before provision of $100 million in restructuring charges for ARCO
Chemical and  coal  operations.  Discontinued operations  included  ARCO's
interest in ARCO Chemical and Lyondell, as well as domestic and Australian
coal operations.


Gain on Disposition of ARCO Chemical Stock

     In  the third quarter of 1998, ARCO sold its entire interest in  ARCO
Chemical (80,000,001 shares of common stock) to Lyondell, an unrelated third
party, for $4.6 billion and recorded a net after-tax gain of $1,088 million.

     Previously, the Company entered into a ten-year purchase agreement with
ARCO Chemical providing for the delivery of fixed quantities of methyl
tertiary butyl ether ("MTBE") at a fixed price approximating the then-market
price.  Over the last several years the spot market price of MTBE has
declined; however, provision for loss on the contract was not required since
ARCO Chemical was a consolidated, majority-owned subsidiary of the Company.

     The  above-market MTBE contract value was reflected in the sale price
of the Company's interest in ARCO Chemical.  As a result, ARCO has deferred
$313 million of the pre-tax gain on sale of the ARCO Chemical interest. 
This deferral represents the estimated discounted present value of the
difference over the remaining term of the contract between the contract
price and the spot market price for MTBE.

     The deferral will be amortized over the remaining term of the contract
on  a  straight-line  basis.  The amortization and recognition  of  imputed
interest  will  have  a net favorable impact of approximately  $17  million
before  tax  per quarter on earnings of the Refining and marketing  segment
through the end of the contract in 2001.


Consolidated Revenues




                                                          1998     1997
                                                          ----     ----
                                                                (Restated)
    (Millions)
                                                            
    Sales and other operating revenues
      Exploration and production . . . . . . . . . . .   $1,518   $2,144
      Refining and marketing . . . . . . . . . . . . .    1,386    1,783
      Other. . . . . . . . . . . . . . . . . . . . . .       42       47
      Intersegment eliminations. . . . . . . . . . . .     (291)    (480)
                                                          -----    -----
        Total. . . . . . . . . . . . . . . . . . . . .   $2,655   $3,494
                                                          =====    =====

     The  decline  in  exploration and production sales revenues  resulted
primarily  from  lower  petroleum liquids  prices  and  lower  natural  gas
marketing  activity,  partially offset by an  11%  increase  in  production
volumes.   Effective September 1, 1997, Vastar contributed the majority of
its natural gas marketing operations to a joint venture  with the Southern
Company.  Primarily as a result of the  transfer of  those  operations, 
total natural gas sales volumes  decreased  to  2.5 billion cubic feet per
day in the 1998 third quarter, down from 3.6 billion cubic feet per day in
the 1997 third quarter.

     Refining and marketing sales revenues primarily decreased because  of
lower light product prices.

                                   - 22 -


Consolidated Expenses

     Trade  purchases  were  lower primarily as a result  of  the  Vastar-
Southern  joint venture and lower crude oil prices.  Natural  gas  purchase
volumes  decreased  to  .5 billion cubic feet per day  in  the  1998  third
quarter,  down  from  1.8 billion cubic feet per  day  in  the  1997  third
quarter.

     Operating expenses were higher in 1998 primarily as a result  of  the
inclusion  of UTP operations in the third quarter 1998 results  and  higher
charges  for future environmental remediation, compared to the same  period
in 1997.

     Selling,  general  and  administrative  expenses  in  1998  primarily
reflected lower personnel expenses at corporate headquarters.

     Higher depreciation, depletion and amortization in 1998 reflected the
writedown  of  the California heavy oil holdings and the inclusion  of  UTP
operations in the third quarter 1998 results, compared to the third quarter
of 1997.

     The  lower  taxes other than income taxes in 1998 primarily  resulted
from the impact of lower crude oil prices on U.S. production taxes.


Income Taxes

     The Company had a tax benefit in the 1998 third quarter reflecting the
Company's  loss  from  continuing operations in the  current  period.   The
Company  had an effective tax rate of 19.4% in the 1997 third quarter.   An
effective  tax  rate  in  1997  lower than  the  statutory  rate  primarily
reflected various tax credits and other benefits.



Nine-Month Period Ended September 30, 1998 vs. Same Nine-Month Period 1997


Consolidated Earnings

     Net  income decreased to $1,246 million, down from the $1,389 million
reported  for  the first nine months of 1997.  Operating results  excluding
special items declined to $505 million, compared to $1,304 million for  the
first  nine  months  of 1997. The decline in earnings  primarily  reflected
lower crude oil prices.

     Special items for the first nine months of 1998 included the net after-
tax benefit of $799 million included in the third quarter 1998 results,  as
well as net charges of $58 million for special items in the first two quarters
of 1998.

     Special items for the first nine months of 1997 included the net after-
tax benefit of $85 million included in the third quarter 1997 results.

     In  addition, the first nine months of 1997 included an extraordinary
loss  of  $118 million after tax related to early retirement of debt.   The
impact of the extraordinary loss was offset by the reversal of reserves for
taxes  and  related  interest  which resulted primarily  from  the  partial
resolution of certain federal and state income tax audits.

                                  - 23 -


After-tax Segment Earnings


                              1998                    1997 (Restated)
                   ---------------------------    ---------------------------
                             Less:                         Less:
                            Special                       Special
                             Items                         Items
                    Net   (Charge)  Operating      Net   (Charge)  Operating
(Millions)         Income   Benefit   Results     Income   Benefit   Results
                   ------ --------- ---------     ------ --------- ---------
(s)                                                        
Exploration and
 production . . .  $  143   $ (169)    $312       $1,061    $ 22     $1,039
Refining and
 marketing. . . .     224        -      224          250       -        250
Other operations.      98       17       81           57      (9)        66
Interest expense.    (236)       -     (236)        (176)     89       (265)
Other unallocated 
 expenses . . . .    (169)    (117)     (52)        (185)    (90)       (95)
                    -----    -----      ---        -----     ---      -----
Income (loss)
 from continuing
 operations . . .      60     (269)     329        1,007      12        995
Income (loss)
 from discontinued
 operations . . .      98      (78)     176          209    (100)       309
Gain on disposition
 of stock*  . . .   1,088    1,088        -          291     291          -
Extraordinary item      -        -        -         (118)   (118)         -
                    -----    -----      ---        -----     ---      -----
  Net income. . .  $1,246   $  741     $505       $1,389    $ 85     $1,304
                    =====    =====      ===        =====     ===      =====

*1998:  Approximate 82% interest in ARCO Chemical; 1997:  49.9% interest in
Lyondell.


Consolidated Revenues


                                                        1998       1997
                                                        ----       ----
                                                                (Restated)
   (Millions)
                                                           
   Sales and other operating revenues
     Exploration and production . . . . . . . . . . . $ 4,424    $ 7,390
     Refining and marketing . . . . . . . . . . . . .   4,170      5,106
     Other. . . . . . . . . . . . . . . . . . . . . .     137        148
     Intersegment eliminations. . . . . . . . . . . .    (976)    (1,724)
                                                       ------     ------
       Total. . . . . . . . . . . . . . . . . . . . . $ 7,755    $10,920
                                                       ======     ======

     The decline in exploration and production sales revenues for the first
nine  months of 1998 resulted primarily from lower petroleum liquids prices
and  natural  gas marketing activity.  Effective September 1, 1997,  Vastar
contributed the majority of its natural gas marketing operations to a joint
venture  with the Southern Company.  Primarily as a result of the  transfer
of  those  operations,  total natural gas sales volumes  decreased  to  2.4
billion cubic feet per day for the first nine months of 1998, down from 4.1
billion cubic feet per day for the same period in 1997.

     For  the  first  nine  months of 1998 refining  and  marketing  sales
revenues primarily decreased because of lower refined products prices.

                                 - 24 -

Consolidated Expenses

     Trade  purchases for the nine months ended September  30,  1998  were
lower  primarily  as  a result of lower crude oil prices  and  the  Vastar-
Southern  joint  venture.   Natural gas purchase volumes  decreased  to  .5
billion  cubic feet per day in 1998, down from 2.2 billion cubic  feet  per
day in the same period in 1997.

     Operating  expenses declined during the first nine  months  of  1998,
compared  to  the  same period in 1997 primarily as a result  of  decreased
natural gas marketing activity and other cost reductions in the exploration
and production operations of the Company.

     The increased depreciation, depletion and amortization expense for the
first nine months of 1998 included a writedown of the California heavy  oil
holdings, a writedown of a North Sea natural gas field and the inclusion of
UTP operations in the third quarter 1998.

     The  higher  exploration expense for the first nine  months  of  1998
reflected  increased  geological and geophysical  and  dryhole  expense  in
international operations and higher dryhole expense at Vastar.

     The  lower  taxes other than income taxes in 1998 primarily  resulted
from the impact of lower crude oil prices on U.S. production taxes.

     For  the  nine  months ended September 30, 1998, the higher  interest
expense  reflected the absence of the reversal of reserves for  tax-related
interest  in the second quarter of 1997.  Excluding the prior year  reserve
reversal,  interest expense was down almost $65  million in the first  nine
months of 1998 as a result of debt retirements and capitalized interest.


Income Taxes

     The  Company  had  a tax benefit for the first nine  months  of  1998
reflecting the Company's loss from continuing operations for the first nine
months  of  1998.  The Company had an effective tax rate of 30.8%  for  the
first  nine months of 1997.  An effective tax rate in 1997 lower  than  the
statutory  rate primarily reflected various tax credits and the net  effect
of affiliate stock transactions.


Average Oil and Gas Prices


                                                        Nine Months Ended
                                                          September 30,
                                                        -----------------
                                                          1998      1997
                                                          ----      ----
                                                             
      U.S.
        Petroleum liquids - per bbl
          Alaska  . . . . . . . . . . . . . . . . . . .  $ 8.59    $15.36
          Lower 48, including Vastar. . . . . . . . . .  $11.31    $17.03
          Composite average price . . . . . . . . . . .  $ 9.55    $15.90
        Natural gas - per mcf . . . . . . . . . . . . .  $ 1.85    $ 1.97



                                                        Nine Months Ended
                                                          September 30,
                                                        -----------------
                                                          1998      1997
                                                          ----      ----
                                                             
      International
        Petroleum liquids - per bbl . . . . . . . . . .  $11.62    $18.36
        Natural gas - per mcf . . . . . . . . . . . . .  $ 2.51    $ 2.64
        Indonesia liquid natural gas. . . . . . . . . .  $ 2.29    $    -


                                   - 25 -


Petroleum Liquids and Natural Gas Production


                                                          1998        1997
                                                          ----        ----
                                                               
      Net Production*
      U.S.
        Petroleum liquids - bbl/day
          Alaska . . . . . . . . . . . . . . . . . . .   346,100     377,300
          Vastar . . . . . . . . . . . . . . . . . . .    48,600      51,100
          Other Lower 48 . . . . . . . . . . . . . . .   138,500     127,600
                                                       ---------   ---------
            Total. . . . . . . . . . . . . . . . . . .   533,200     556,000
        Natural gas - mcf/day. . . . . . . . . . . . . 1,125,000   1,058,700

        Barrels of oil equivalent - (BOE)/day. . . . .   720,700     732,400

      International
        Petroleum liquids - bbl/day. . . . . . . . . .   111,500      76,800
        Natural gas - mcf/day. . . . . . . . . . . . .   793,100     830,800
        BOE/day. . . . . . . . . . . . . . . . . . . .   243,700     215,300

        Total net production - BOE/day . . . . . . . .   964,400     947,700
      _______________
      *  Includes ARCO's share of production from equity affiliates.  For
         BOE calculation, natural gas is converted at the ratio of 6 mcf
         to 1 barrel of liquid.



Liquidity and Capital Resources


                                                                   1998
                                                                   ----
          (Millions)
                                                              
          Cash flow provided (used) by:
          Operations. . . . . . . . . . . . . . . . . . . . .    $ 1,392
          Investing activities. . . . . . . . . . . . . . . .    $   256
          Financing activities. . . . . . . . . . . . . . . .    $(1,038)


     The net cash used by investing activities in the first nine months of
1998  included  expenditures of $4.6 billion from the disposition of ARCO
Chemical stock and the proceeds from other net asset sales, primarily U.S.
coal assets, of $1.1 billion offset by expenditures for the purchase of
UTP for $2.7 billion and additions to fixed assets of $2.5 billion.

     The net cash provided by financing activities in the first nine months
of  1998  primarily included a decrease of $347 million in the  Company's
short-term debt position offset by dividend payments of $688 million.

     Cash  and  cash equivalents and short-term investments  totaled  $1.3
billion and short-term borrowings were $1.2 billion at the end of the third
quarter  of  1998.   Primarily  as a result of  the  income  taxes  payable
associated  with  the  sale of ARCO Chemical stock, the  Company  is  in  a
working capital deficit position of approximately $2.2 billion at September
30,  1998.   It  is  expected  that future cash  requirements  for  working
capital, capital expenditures, dividends and debt repayments will come from
cash  generated  from operating activities, existing cash balances,  short-
term borrowing and future financings.


                                  - 26 -


Impact of the Year 2000 Issue

     The  Year  2000  issue  arises from computer  programs  and  embedded
computer  chips being unable to distinguish between the year 1900  and  the
year  2000,  resulting  in system failures or miscalculations that cause
operational disruptions.

     In addressing the Year 2000 issue, ARCO divided the project into three
components:   (1)   computing  integrity,  which  covers  all   information
technology systems, including telecommunications/network support  (software
and  hardware)  and third-party hardware and software not in  ARCO's  plant
facilities,  (2)  plant integrity, which covers all hardware  and  software
responsible for the movement of product in ARCO's various plant facilities,
and  (3)  commercial  integrity,  which  covers  all  external  third-party
relationships, non-ARCO operated joint ventures and third-party operated
production, including the Trans Alaska Pipeline System ("TAP").  ARCO is
managing the project internally and is working to assure Year 2000 integrity
by conducting internal audits.  The Company has also hired outside con-
sultants to do certain minor audits.  The Company's implementation of the
Year 2000 Project has not impacted other technology projects.

     The Company has developed the following guidelines to achieve Year 2000
compliance:  (1) Inventory preparation - the Company will first prepare an
inventory of items for each material asset covering the components; (2)
Prioritize inventory - the Company will then evaluate each item for its
potential to interfere with critical operations such that failure would
result in a material adverse effect on ARCO's operations; (3) Option assess-
ment - the Company will evaluate various remediation strategies to mitigate
Year 2000 effects including repair, replacement and retirement; (4) Implement
appropriate options - the Company will execute the appropriate selected
remediation strategy; (5) Continued monitoring - the Company will institute
processes after remediation has been completed for ensuring continued Year
2000 compliance.

     The criticality of Year 2000 inventory items is evalulated, in 
descending order, based on the following considerations:  if a failure
attributable to the Year 2000 were to occur, a determination will be made
of its impact on (1) health and safety of ARCO employees; (2) the environ-
ment; (3) ARCO's revenues; and/or (4) ARCO's business relationships.  In
addition, these Year 2000 items are being evaluated in the context of ARCO's
existing business interruption plans, which contain provisions for opera-
tional disruptions caused by disasters such as earthquakes and hurricanes
which may have effects comparable to those that may be caused by Year 2000
failures.

     At the date hereof, the Company estimates that it will have achieved
the percentage completion of remediation of material Year 2000 items
affecting its exploration and production and refining and marketing segments
as follows:  (1) Computing integrity is expected to be 90% completed by year
end 1998, with 100% achieved during the second quarter of 1999.  (2) Plant
integrity is expected to be 50% completed by year end 1998, with 100%
achieved during the second quarter of 1999.  (3) Commercial integrity is
expected to be 25% completed by year end 1998, with 100% achieved by the
end of the second quarter of 1999.  In the event that these completion goals
are not met, or the remediation work is unsuccessful in avoiding material
Year 2000 problems, the Company believes that its existing business
disruption plans will adequately cover any material business interruptions
resulting from material non-compliant Year 2000 items.

     The total cost associated with required modifications to achieve Year
2000 compliance is not expected to be material to the Company's financial
position.  The approximate total cost of the Year 2000 project is $25 million.
This estimate does not include ARCO's potential share of Year 2000 costs that
may be incurred by partnerships and joint ventures in which the Company
participates but is not the operator.  The total amount expended through
September 30, 1998 was approximately $14 million.


                                   - 27 -


     The failure to correct a material Year 2000 problem could result in an
interruption in, or a failure of, certain normal business activities or
operations.  Such failures could materially and adversely impact the
Company's results of operations or financial condition.  As a result of the
general uncertainty inherent in the Year 2000 problem, the Company is unable
to determine at this time whether the consequences of Year 2000 failures will
have a material impact on the Company's results of operations or financial
condition.  Completion of the Company's Year 2000 compliance guidelines, if
implemented as scheduled, is expected to reduce the possibility of material
disruptions of normal operations.

     The foregoing "Impact of the Year 2000 Issue" contains forward-looking
statements that should be read in conjunction with the disclosures under the
heading "Safe Harbor Cautionary Statement."


Safe Harbor Cautionary Statement

     ARCO desires to take advantage of the "safe harbor" provisions contained
in Section 27A of the Securities Act of 1933, as amended (the "1933 Act"), 
and Section 21E of the Securities Exchange Act of 1934, as amended (the "1934
Act"), and is including this statement herein in order to do so.

     The discussion above contains forward-looking statements (which may
come within the meaning of Section 27A of the 1933 Act and Section 21E of
the 1934 Act).  Readers are cautioned that these statements are based upon
certain assumptions, including but not limited to assumptions as to the
availability of trained personnel and the ability to timely identify and
locate all relevant Year 2000 issues which might affect the Company and
the assumption that representations by third parties are correct.  The
Company also assumes that the Company's repair and replacement programs
will be timely completed and that certain vendors and contractors will
timely perform as promised.  Actual results could differ materially if the
Company's assumptions are incorrect.  Due to the general uncertainty as to
the Year 2000 readiness of third parties and the interconnection of business,
the Company cannot ensure its ability to resolve its Year 2000 problems in
a timely and cost effective manner.  The failure to do so could affect the
Company's operations and business or expose it to third-party liability.


Statements of Financial Accounting Standards Not Yet Adopted

     In March 1998, the American Institute of Certified Public Accountants
("AICPA")  issued Statement of Position ("SOP") 98-1, "Accounting  for  the
Costs of Computer Software Developed or Obtained for Internal Use."  SOP
98-1 is effective for financial statements for fiscal years beginning after
December  15,  1998.  SOP 98-1 establishes criteria for  determining  which
costs  of developing or obtaining internal-use computer software should  be
charged  to  expense  and  which should be capitalized.   The  Company  has
determined that the adoption of SOP 98-1 will not have a material effect on
ARCO's financial position or results of operations.

     In  April  1998, the AICPA issued SOP 98-5, "Reporting the  Costs  of
Start-up  Activities."  SOP 98-5 is effective for financial statements  for
fiscal years beginning after December 15, 1998.  SOP 98-5 states that costs
of start-up activities, including organization costs, should be expensed as
incurred.   The Company has determined that the adoption of SOP  98-5  will
not  have  a  material effect on ARCO's financial position  or  results  of
operations.

                                  - 28 -


     In  June  1998,  the  Financial  Accounting  Standards  Board  issued
Statement  of Financial Accounting Standards ("SFAS") No. 133,  "Accounting
for  Derivative Instruments and Hedging Activities."  SFAS No. 133 requires
companies  to  adopt its provisions for all fiscal quarters of  all  fiscal
years  beginning after June 15, 1999.  Earlier application of  all  of  the
provisions  of  SFAS  No. 133 is permitted, but the  provisions  cannot  be
applied  retroactively  to financial statements  of  prior  periods.   SFAS
standardizes the accounting for  derivative  instruments by requiring that
an  entity  recognize  those items  as assets or liabilities in the statement
of financial position  and measure  them at fair value.  The Company has not
yet completed  evaluating the impact of the provisions of SFAS No. 133.

                      _______________________________


      Management  cautions against projecting any future results  based  on
present  earnings levels because of economic uncertainties, the extent  and
form  of  existing  or future governmental regulations and  other  possible
actions by governments.
                                     
                                   - 29 -

                                     
                        PART II.  OTHER INFORMATION


Item 1.  Legal Proceedings.

1.   Reference is made to the disclosure on page 12 of the Company's Annual
     Report on Form 10-K for the year ended December 31, 1997 (hereinafter,
     the  "1997  Form 10-K Report"), on page 21 of the Company's  Quarterly
     Report on Form 10-Q for the quarterly period ended March 31, 1998 (the
     "First  Quarter  Form 10-Q Report") and on page 28  of  the  Company's
     Quarterly Report on Form 10-Q for the quarterly period ended June  30,
     1998  (the  "Second  Quarter Form 10-Q Report") regarding  Montana  v.
     ARCO (Case No. CV-83-317-HLN-PGH).  On June 19, 1998,  ARCO and the
     State lodged with the court a conditional consent decree to settle for
     $135 million all but a portion of the State's natural resource damage
     ("NRD") claims and for $80 million claims for cleanup at the Stream
     Side Tailings Operable Unit ("SSTOU").  The NRD claims of the State
     not settled are for restoration at three sites for which a final
     cleanup plan has not been ordered.  As part of the settlement, ARCO,
     the State, the United States, and the Tribes expect to lodge with the
     court a second consent decree setting forth the terms of the settlement
     of claims for cleanup and also settling claims for past costs and a
     civil penalty at the SSTOU.  That consent decree will also provide
     for settlement of United States and Tribal NRD claims in the Clark
     Fork Basin.  All of these settlements are subject to court approval.

2.   Reference  is made to the disclosure on page 12 of the Company's  1997
     Form 10-K Report and on page 28 of the Second Quarter Form 10-Q Report
     regarding  the  case of U.S. v. ARCO, et al. (Case  No.  CV-89-039-BU-
     PGH).   The proposed settlements in Montana v. ARCO, described  above,
     will  resolve the claims and counterclaims in U.S. v. ARCO  pertaining
     to  the  SSTOU  and  will  provide  a framework  for  possible  future
     settlements of the remaining claims.

3.   Reference  is  made  to  the disclosure on pages  12  and  13  of  the
     Company's 1997 Form 10-K Report regarding a complaint entitled  In  re
     Hanford  Nuclear Reservation Litigation (CY-91-3015-AAM).   On  August
     21,  1998, the court issued a ruling that, if upheld on appeal, should
     result in the dismissal of ARCO and its subsidiary, Atlantic Richfield
     Hanford Company, from the case.

4.   Reference is made to the disclosure on page 14 of the  Company's  1997
     Form 10-K Report and on page 28 of the Second Quarter Form 10-Q Report
     regarding Siemens Solar Industries v. Atlantic Richfield Company (Case
     No. 94-109092).  On October 27, 1998, the New York Court of Appeals
     denied Siemens' motion for leave to appeal the summary judgment,
     concluding this lawsuit in ARCO's favor.

5.   Reference  is made to the disclosure on page 14 of the Company's  1997
     Form 10-K Report and on page 21 of the First Quarter Form 10-Q Report"
     regarding  ARCO,  et  al.  v. UNOCAL (Case No.  95-2379-KMW-JRx).   On
     September 29, 1998, the court issued a judgment in favor of UNOCAL for
     $10.3  million  (including  prejudgment  interest)  against  ARCO  for
     infringing gallons during the first five months of production and  for
     $1.5  million  joint  and  several against ARCO  and  the  other  five
     refiners for UNOCAL's attorneys fees.  ARCO has appealed the  decision
     to the Court of Appeals for the Federal Circuit.

6.   Reference is made to the disclosure on page 28 of the Company's Second
     Quarter Form 10-Q Report regarding ARCO's receipt of a Finding of
     Violation from EPA Region IX for alleged violations at the Los Angeles
     Refinery of the federal New Source Performance Standards established
     for refineries under the Clean Air Act.  Settlement discussions with
     EPA continue.

                                    - 30 -


Item 1.  Legal Proceedings (continued).

7.   On  June  7,  1994,  a  purported class action was  filed  by  several
     individuals   in   United  States  District   Court   in   Pittsburgh,
     Pennsylvania against ARCO and Babcock & Wilcox Company ("B  &  W")  on
     behalf  of  persons "estimated to be in the thousands"  who  lived  or
     worked  in Apollo and Parks Township, Pennsylvania, and areas downwind
     of  those places, from 1957 to the present.  The suit, Hall, et al. v.
     Babcock  & Wilcox Company, et al. (Case No. 94-0951), claims that  the
     plaintiffs  and  alleged  class members were exposed  to  releases  of
     radioactive  and  other  toxic substances from two  nuclear  materials
     processing  facilities  that  have contaminated  the  air,  soil,  and
     surface and ground water in those communities.  The suit seeks damages
     for death and personal injury, diminution in property values, costs of
     decontamination of property, injunctive relief requiring defendants to
     establish  a fund for medical monitoring, and punitive damages.   ARCO
     has  been  sued as the former owner of Nuclear Materials and Equipment
     Corporation ("NUMEC"), the original owner and operator of  the  Apollo
     and  Parks Township facilities from March 1967 to November 1971.  On
     September 17, 1998, the jury in a trial of eight "test-case" plaintiffs'
     claims returned a verdict  of $33.7 million jointly and severally
     against ARCO and B & W and another $2.8  million just against B & W.
     On September 24, 1998, these  eight test-case plaintiffs withdrew their
     claim for punitive damages against ARCO.   ARCO and B & W have filed
     motions for judgment in their  favor or for a new trial.  The claims of
     other plaintiffs remain for  trial or other disposition.

8.   On October 22, 1998, ARCO was served with a complaint filed in the
     Superior Court of California for the County of Sacramento entitled
     Cal-Tex Citrus Juice, et al. v. Atlantic Richfield Company, et al.
     (Case  No. 98AS05227).  The complaint is purportedly on behalf of a
     class of all direct or indirect purchasers of California diesel fuel
     between March 19, 1996 and December 31, 1997 against all California
     refiners of California diesel fuel.  The complaint alleges violations
     of various state statutes by the defendants' alleged conspiracy to
     fix prices of California diesel fuel and seeks treble damages and
     restitution.

9.   Reference  is  made  to  the  Company's  1997  Form  10-K  Report  for
     information on other legal proceedings matters reported herein.


                                 - 31 -


Item 6.  Exhibits and Reports on Form 8-K

    (a) Exhibits.

        10.1  Amendment No. 4 to the Atlantic Richfield Company
              Supplementary Executive Retirement Plan, effective as of
              August 1, 1997, filed herewith.

        10.2  Amendment No. 4 to the Atlantic Richfield Company Executive
              Deferral Plan, effective as of January 1, 1997, filed herewith.

        10.3  Amendment No. 5 to the Atlantic Richfield Company Annual 
              Incentive Plan, effective as of July 28, 1997, filed herewith.

        10.4  Amendment No. 6 to the Atlantic Richfield Company Annual
              Incentive Plan, effective as of July 28, 1997, filed herewith.

        10.5  Amendment No. 10 to the Atlantic Richfield Company 1985
              Executive Long-Term Incentive Plan, effective as of July 28,
              1997, filed herewith.

        10.6  Amendment No. 11 to the Atlantic Richfield Company 1985
              Executive Long-Term Incentive Plan, effective as of July 28,
              1997, filed herewith.

        10.7  Amendment No. 6 to Atlantic Richfield Company Special
              Termination Allowance Plan which contains the current change
              of control provisions applicable to the Company's executive
              management team, including its five most highly compensated
              executive officers.

        27    Financial Data Schedule.


   (b) Reports on Form 8-K

       The following Current Reports on Form 8-K were filed during the
       quarter ended September 30, 1998 and through the date hereof.

         Date of Report          Item No.          Financial Statements
         --------------          --------          --------------------
       September 30, 1998           5                     None


                                     - 32 -


                                 SIGNATURE


     Pursuant to the requirements of the Securities Exchange Act of 1934,
the registrant has duly caused this report to be signed on its behalf by
the undersigned thereunto duly authorized.

                                            ATLANTIC RICHFIELD COMPANY
                                                    (Registrant)


                                               /s/ ALLAN L. COMSTOCK
Dated:  November 10, 1998                   ____________________________
                                                     (signature)
                                                 Allan L. Comstock
                                            Vice President and Controller
                                            (Duly Authorized Officer and
                                            Principal Accounting Officer)


                                  - 33 -