EXHIBIT 99.1

                              RESTATED AND AMENDED

                            ARTICLES OF INCORPORATION

                                       OF

                         UNION OIL COMPANY OF CALIFORNIA
                            a California Corporation
                         (Endorsed filed April 1, 1999,
      in the office of the Secretary of State of the State of California)


         Dennis P.R. Codon and Brigitte M. Dewez hereby certify that:

         1. They are a duly  elected  and  acting  Vice  President  and the duly
elected and acting Secretary,  respectively, of Union Oil Company of California,
a California corporation (the "Corporation").

         2. The Articles of  Incorporation  of the  Corporation  are amended and
restated to read in full as follows:

                           "ARTICLES OF INCORPORATION"

                                       OF

                         UNION OIL COMPANY OF CALIFORNIA
                            a California Corporation

         One: The name of the Corporation is:   UNION OIL COMPANY OF CALIFORNIA.

         Two: The purpose of the  Corporation  is to engage in any lawful act or
activity for which a corporation may be organized under the General  Corporation
Law of California other than the banking  business,  the trust company business,
or the practice of a profession  permitted to be  incorporated by the California
Corporations Code.

         Three: The Corporation shall have the power to offer, issue and to sell
pro rata to the holders of its Common Shares,  shares of its capital stock other
than shares of stock issued and sold under and pursuant to the provisions of (1)
and (2) of the second paragraph of this Article Three, and to sell to others any
shares of stock so offered to the holders of the Common  Shares and not taken by
them for such price or consideration as the Board of Directors may determine.

         Notwithstanding the foregoing provisions of this Article Three, (1) the
Corporation  may issue shares of its capital stock,  and of any future  increase
thereof,  in  such  amounts  as may be  determined  by the  affirmative  vote of
two-thirds of the entire Board of  Directors,  in exchange for or in payment for
property to be acquired by the Corporation for carrying out any of the foregoing
purposes,  without first  offering such stock to its  stockholders;  also,  upon
affirmative  vote  of  two-thirds  of the  entire  Board  of  Directors  of this
Corporation, and without any prior offering to stockholders of this Corporation,
the  Corporation  may grant to the  purchasers  or the  holders  of any bonds or
debentures or evidences of indebtedness of this Corporation,  optional rights to
convert any of such securities,  in whole or in part, into shares of the capital
stock of this Corporation,  and of any future increase thereof,  and also of any
subsequent offering thereof, or the optional rights to purchase any such shares,
all on such  terms  and  conditions  and at such  price or  prices,  and in such
manner,  at such times and in such amounts as may be  determined by such vote of
directors,  and on any  such  optional  rights  being  exercised  by the  holder
thereof,  may issue the capital stock called for by the exercise of such rights;
and (2) the Corporation may offer, issue and sell, and grant options to purchase
Common Shares to such employees of the Corporation and its subsidiaries, in such
amounts,  upon such terms and conditions and for such consideration as the Board
of Directors may from time to time determine, but not to exceed in the aggregate
500,000  Common  Shares;  provided  however,  that such maximum  amount shall be
subject  to  adjustment  (in the same  manner as the  Corporation's  outstanding
Common Shares) in the event a dividend is declared upon the Common Shares of the
Corporation  payable  in Common  shares or in the event the  outstanding  Common
Shares of the  Corporation  shall be changed into or  exchanged  for a different
number or class of shares of stock or other  securities of the Corporation or of
another corporation,  whether through  reorganization,  recapitalization,  stock
split-up,  combination  of  shares,  merger  or  consolidation,   and  that  the
provisions  of this section shall be applicable to the number or class of shares
of stock or other securities,  which in accordance herewith,  may be substituted
for such 500,000  Common  Shares;  and provided  further that in the case of any
sale of such  shares  the price  shall not be less  than the fair  market  value
thereof at the time of sale as determined by the Board of Directors, and that in
the case of any option to purchase such shares, the price shall not be less than
the fair  market  value  thereof  at the time of  granting  such  option,  as so
determined.  For the purposes and within the  aggregate  limit above  mentioned,
such Common  Shares  (subject to  adjustment  as above  provided)  may be issued
without any prior offering to stockholders of this Corporation.
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        Four:  The  Corporation  is  authorized  to issue one class of shares of
capital stock to be  designated  Common  Shares.  The aggregate par value of all
shares that are to have a par value is $541,666,666.66-2/3. The number of shares
that  are to have a par  value is  260,000,000,  all of  which  shall be  Common
Shares, and the par value of each of such shares is $2-1/12.

         Five: The Corporation elects to be governed by all of the provisions of
the General Corporation Law of California (as enacted by Chapter 682 of the 1975
California Statutes and as subsequently  amended) not otherwise applicable to it
under Chapter 23 thereof.

         Six: The  liability of the  directors of the  Corporation  for monetary
damages shall be eliminated to the fullest extent  permissable  under California
law. If the California General  Corporation Law is amended after approval by the
stockholders of this article to authorize  corporate action further  eliminating
or limiting  the  personal  liability  of  directors,  then the  liability  of a
director of the Corporation shall be eliminated or limited to the fullest extent
permitted by the California General Corporation Law, as so amended.

         Any  repeal  or  modification  by the  stockholders  of  the  foregoing
paragraph  shall not  adversely  affect any right or protection of a director of
the Corporation existing at the time of such repeal or modification.

         Seven: The Corporation is authorized to provide  indemnification of its
agents (as such term is defined in Section  317 of the  California  Corporations
Code),  whether  by bylaw,  agreement,  vote of  stockholders  or  disinterested
directors, or otherwise, to the fullest extent permissible under California law.

         Any  repeal  or  modification  by the  stockholders  of  the  foregoing
paragraph  shall not adversely  affect any right or protection of any such agent
of the Corporation existing at the time of such repeal or modification."

3. The foregoing  amendment and restatement of the Articles of Incorporation has
been approved by the Board of Directors of the Corporation.

4.  The  foregoing  amendment  has been  approved  by the  required  vote of the
stockholders of the Corporation in accordance with Section 902 of the California
Corporations  Code; the total number of outstanding  shares of common stock, the
only class outstanding, entitled to vote with respect to the foregoing amendment
was  1,000.  The  number of shares  voting in favor of the  foregoing  amendment
equaled or exceeded the vote  required.  The  percentage  vote required was more
than 50%.

The undersigned,  Dennis P.R. Codon and Brigitte M. Dewez, further declare under
penalty of perjury  under the laws of the State of  California  that the matters
set out in this Certificate are true and correct of our knowledge.

Dated: March 31, 1999



         /s/ Dennis Codon                                    /s/ B. Dewez
- ---------------------------------                   ----------------------------
Dennis P.R. Codon, Vice President                   Brigitte M. Dewez, Secretary

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