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                          AGREEMENT AND PLAN OF MERGER

                                  dated as of

                                 APRIL 4, 2005

                                     among

                              UNOCAL CORPORATION,

                           CHEVRONTEXACO CORPORATION

                                      and

                              BLUE MERGER SUB INC.


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                               TABLE OF CONTENTS

                                                                            PAGE

ARTICLE I     THE MERGER.......................................................1

      Section 1.1    The Merger................................................1
      Section 1.2    Certificate of Incorporation and Bylaws of the
                     Surviving Corporation.....................................2
      Section 1.3    Directors and Officers of the Surviving Corporation.......2
      Section 1.4    Effect on Capital Stock...................................2
      Section 1.5    Election Procedures.......................................4
      Section 1.6    Dissenting Shares.........................................6
      Section 1.7    Stock Options and Equity Awards...........................6
      Section 1.8    Shares Held by Company Affiliates.........................8

ARTICLE II    EXCHANGE OF CERTIFICATES.........................................8

      Section 2.1    Surrender and Payment.....................................8
      Section 2.2    Fractional Shares........................................10
      Section 2.3    Lost Certificates........................................11
      Section 2.4    Withholding Rights.......................................11

ARTICLE III   REPRESENTATIONS AND WARRANTIES OF THE COMPANY...................11

      Section 3.1    Corporate Existence and Power............................11
      Section 3.2    Corporate Authorization..................................12
      Section 3.3    Governmental Authorization...............................12
      Section 3.4    Non-Contravention........................................13
      Section 3.5    Capitalization...........................................13
      Section 3.6    Subsidiaries.............................................14
      Section 3.7    Commission Filings.......................................15
      Section 3.8    Financial Statements.....................................16
      Section 3.9    Disclosure Documents.....................................16
      Section 3.10   Controls and Procedures..................................16
      Section 3.11   Absence of Certain Changes...............................18
      Section 3.12   No Default...............................................19
      Section 3.13   No Undisclosed Material Liabilities......................19
      Section 3.14   Litigation...............................................20
      Section 3.15   Taxes....................................................20
      Section 3.16   Employee Benefit Plans; Employment.......................21
      Section 3.17   Compliance with Laws.....................................23
      Section 3.18   Certain Business Practices...............................23
      Section 3.19   Environmental Matters....................................23
      Section 3.20   Compliance with Laws.....................................24
      Section 3.21   Hydrocarbon Contracts....................................25
      Section 3.22   Material Contracts.......................................25


<PAGE>


      Section 3.23   Intellectual Property....................................25
      Section 3.24   Confidentiality and Other Agreements.....................26
      Section 3.25   Brokers; Financial Advisors..............................26
      Section 3.26   Opinion of Financial Advisor.............................27
      Section 3.27   Takeover Statutes........................................27
      Section 3.28   Stockholder Rights Plan..................................27

ARTICLE IV    REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER
              SUBSIDIARY......................................................27

      Section 4.1    Corporate Existence and Power............................27
      Section 4.2    Corporate Authorization..................................28
      Section 4.3    Governmental Authorization...............................28
      Section 4.4    Non-Contravention........................................28
      Section 4.5    Capitalization...........................................29
      Section 4.6    Commission Filings.......................................29
      Section 4.7    Financial Statements.....................................30
      Section 4.8    Disclosure Documents.....................................30
      Section 4.9    Controls and Procedures..................................31
      Section 4.10   Absence of Certain Changes...............................32
      Section 4.11   No Undisclosed Material Liabilities......................33
      Section 4.12   Litigation...............................................33
      Section 4.13   Compliance with Laws.....................................33
      Section 4.14   Tax Treatment............................................33
      Section 4.15   Capitalization of Merger Subsidiary......................33

ARTICLE V     COVENANTS OF THE COMPANY........................................34

      Section 5.1    Conduct of the Company...................................34
      Section 5.2    Company Stockholder Meeting; Proxy Material..............37
      Section 5.3    Resignation of Company Directors.........................39
      Section 5.4    Other Actions............................................39

ARTICLE VI    COVENANTS OF PARENT.............................................39

      Section 6.1    Obligations of Merger Subsidiary.........................40
      Section 6.2    Director and Officer Liability...........................40
      Section 6.3    Form S-4.................................................40
      Section 6.4    Stock Exchange Listing...................................40
      Section 6.5    Employee Benefits........................................41

ARTICLE VII   COVENANTS OF PARENT AND THE COMPANY.............................42

      Section 7.1    Best Efforts.............................................43
      Section 7.2    Certain Filings..........................................44
      Section 7.3    Access to Information....................................44
      Section 7.4    Tax Treatment............................................45
      Section 7.5    Public Announcements.....................................45


<PAGE>


      Section 7.6    Further Assurances.......................................45
      Section 7.7    Notices of Certain Events................................45
      Section 7.8    Affiliates...............................................46
      Section 7.9    No Solicitation..........................................46
      Section 7.10   Takeover Statutes........................................48
      Section 7.11   Section 16(b)............................................49

ARTICLE VIII  CONDITIONS TO THE MERGER........................................49

      Section 8.1    Conditions to the Obligations of Each Party..............49
      Section 8.2    Conditions to the Obligations of Parent and Merger
                     Subsidiary...............................................50
      Section 8.3    Conditions to the Obligations of the Company.............51

ARTICLE IX    TERMINATION.....................................................52

      Section 9.1    Termination..............................................52
      Section 9.2    Effect of Termination....................................53

ARTICLE X     MISCELLANEOUS...................................................53

      Section 10.1   Notices..................................................53
      Section 10.2   Non-Survival of Representations and Warranties...........54
      Section 10.3   Amendments; No Waivers...................................54
      Section 10.4   Expenses.................................................54
      Section 10.5   Company Termination Fee..................................55
      Section 10.6   Successors and Assigns...................................55
      Section 10.7   Governing Law............................................56
      Section 10.8   Enforcement; Jurisdiction................................56
      Section 10.9   Waiver of Jury Trial.....................................56
      Section 10.10  Counterparts; Effectiveness..............................56
      Section 10.11  Entire Agreement.........................................56
      Section 10.12  Captions.................................................57
      Section 10.13  Severability.............................................57


                                   EXHIBITS

Exhibit A   --   Form of Certificate of Incorporation of Merger Subsidiary

Exhibit B   --   Form of Affiliate's Rule 145 Letter


<PAGE>


                                 DEFINED TERMS

                                                                       SECTION



2005 Pro Rata Bonus.......................................................6.5(e)
2006 Pro Rata Bonus.......................................................6.5(e)
Acquisition Proposal......................................................7.9(b)
Affected Employees........................................................6.5(b)
Affected Retirees.........................................................6.5(b)
Affiliate Agreement.......................................................7.8(a)
Agreement...............................................................Preamble
Anti-Discrimination Laws.................................................3.16(j)
Antitrust Laws........................................................7.1(b)(ii)
Available Cash Election Amount........................................1.4(a)(ii)
Book-Entry Shares.........................................................2.1(a)
Cancelled Shares..........................................................1.4(d)
Cash Election.........................................................1.4(a)(ii)
Cash Election Amount..................................................1.4(a)(ii)
Cash Election Share...................................................1.4(a)(ii)
Cash Fraction.........................................................1.4(a)(ii)
CERCLA...................................................................3.19(b)
Certificate...............................................................1.4(b)
Change in Control.........................................................6.5(a)
Change in the Company Recommendation......................................5.2(a)
Closing...................................................................1.1(d)
Closing Date..............................................................1.1(d)
Code....................................................................Recitals
Commission................................................................1.7(c)
Common Shares Trust.......................................................2.2(b)
Company.................................................................Preamble
Company 10-K..............................................................3.7(a)
Company Award.............................................................1.7(b)
Company Award Plans.......................................................1.7(b)
Company Balance Sheet........................................................3.8
Company Balance Sheet Date...................................................3.8
Company Benefit Plans....................................................3.16(a)
Company By-laws..............................................................3.1
Company Capital Stock........................................................3.5
Company Charter..............................................................3.1
Company Commission Documents..............................................3.7(a)
Company Common Stock.........................................................3.5
Company Disclosure Schedules...........................................Article 3
Company Intellectual Property............................................3.23(a)
Company Material Adverse Effect..............................................3.1
Company Material Contracts..................................................3.22
Company Pension Plan.....................................................3.16(e)
Company Phantom Stock Option..............................................1.7(a)


<PAGE>


Company Preferred Stock......................................................3.5
Company Proxy Statement...................................................3.9(a)
Company Recommendation....................................................5.2(f)
Company Rights...............................................................3.5
Company Rights Agreement.....................................................3.5
Company Securities...........................................................3.5
Company Stock Option......................................................1.7(a)
Company Stock Option Plans................................................1.7(a)
Company Stockholder Approval..............................................3.2(a)
Company Stockholder Meeting...............................................5.2(f)
Company Subsidiary Securities.............................................3.6(b)
Confidentiality Agreement....................................................7.3
DGCL......................................................................1.1(a)
Dissenting Share.............................................................1.6
EC Merger Regulation.........................................................3.3
Effective Time............................................................1.1(b)
Electing Stockholder......................................................2.1(a)
Election Deadline.........................................................1.5(b)
Election Form.............................................................1.5(a)
Election Form Record Date.................................................1.5(a)
End Date...............................................................9.1(b)(i)
Environmental Laws.......................................................3.19(b)
ERISA....................................................................3.16(a)
ERISA Affiliate..........................................................3.16(d)
Excess Shares.............................................................2.2(a)
Exchange Act.................................................................3.3
Exchange Agent............................................................2.1(a)
Exchange Ratio.......................................................1.4(a)(iii)
Financial Advisor...........................................................3.25
Foreign Company Benefit Plan.............................................3.16(a)
Form S-4..................................................................4.8(a)
GAAP.........................................................................3.8
Hazardous Substance......................................................3.19(b)
HSR Act......................................................................3.3
Hydrocarbon Contract.....................................................3.21(a)
Hydrocarbons.............................................................3.21(a)
Indemnitees...............................................................6.2(a)
Intellectual Property....................................................3.23(a)
knowledge................................................................3.10(e)
Lien.........................................................................3.4
Mailing Date..............................................................1.5(a)
Merger....................................................................1.1(a)
Merger Consideration......................................................1.4(a)
Merger Subsidiary.......................................................Preamble
Mixed Consideration Election Share.....................................1.4(a)(i)
Mixed Election.........................................................1.4(a)(i)


<PAGE>


Mixed Election Stock Exchange Ratio....................................1.4(a)(i)
No Election Shares........................................................1.5(b)
NYSE......................................................................2.2(a)
Parent..................................................................Preamble
Parent 10-K...............................................................4.6(a)
Parent Balance Sheet.........................................................4.7
Parent Balance Sheet Date....................................................4.7
Parent Commission Documents...............................................4.6(a)
Parent Common Stock..........................................................4.5
Parent Disclosure Schedules...........................................Article IV
Parent Material Adverse Effect...............................................4.1
Parent Securities............................................................4.5
Per Share Cash Amount..................................................1.4(a)(i)
Per Share Cash Election Consideration.................................1.4(a)(ii)
Per Share Mixed Consideration..........................................1.4(a)(i)
Person....................................................................2.1(c)
RCRA.....................................................................3.19(b)
Release..................................................................3.19(b)
RFG Patents..............................................................3.23(a)
Sarbanes-Oxley Act.......................................................3.10(a)
Securities Act...............................................................3.3
Significant Subsidiaries..................................................3.6(a)
Stock Award Exchange Ratio................................................1.7(a)
Stock Consideration..................................................1.4(a)(iii)
Stock Election.......................................................1.4(a)(iii)
Stock Election Share.................................................1.4(a)(iii)
Subsidiary................................................................3.6(a)
Substantial Detriment.....................................................7.1(c)
Superior Proposal.........................................................7.9(b)
Surviving Corporation.....................................................1.1(a)
Tax Returns.................................................................3.15
Taxes.......................................................................3.15


<PAGE>


                          AGREEMENT AND PLAN OF MERGER

     THIS AGREEMENT AND PLAN OF MERGER (this "AGREEMENT") dated as of April 4,
2005 by and among UNOCAL CORPORATION, a Delaware corporation (the "COMPANY"),
CHEVRONTEXACO CORPORATION, a Delaware corporation ("PARENT"), and BLUE MERGER
SUB INC., a newly formed Delaware corporation and a direct wholly-owned
subsidiary of Parent ("MERGER SUBSIDIARY").

                             W I T N E S S E T H:

     WHEREAS, the respective Boards of Directors of Parent, Merger Subsidiary
and the Company have each approved this Agreement and the transactions
contemplated hereby, including the merger of the Company with and into Merger
Subsidiary (the "MERGER"), upon the terms and subject to the conditions set
forth herein;

     WHEREAS, the Board of Directors of the Company deems it advisable and in
the best interest of the Company and its stockholders that the Company enter
into the Merger to advance the strategic business interests of the Company by
putting under common ownership, and permitting the coordination of activities
conducted by, Company subsidiaries and subsidiaries of Parent, and otherwise
participating in growth opportunities of Parent, its subsidiaries and
affiliates; and

     WHEREAS, for United States federal income tax purposes, it is intended that
the Merger will qualify as a reorganization within the meaning of Section 368 of
the Internal Revenue Code of 1986, as amended, and the rules and regulations
promulgated thereunder (the "CODE");

     NOW, THEREFORE, in consideration of the promises and the respective
representations, warranties, covenants, and agreements set forth herein, the
parties hereto agree as follows:

                                   ARTICLE I

                                   THE MERGER

     Section 1.1  THE MERGER.

     (a) Upon the terms and subject to the conditions set forth in this
Agreement, at the Effective Time (as defined below), the Company shall be merged
(the "MERGER") with and into Merger Subsidiary in accordance with the
requirements of the General Corporation Law of the State of Delaware (the
"DGCL"), whereupon the separate existence of the Company shall cease, and Merger
Subsidiary shall be the surviving corporation in the Merger (the "SURVIVING
CORPORATION").

     (b) On the Closing Date, immediately after the Closing, the Company will
file a certificate of merger with the Secretary of State of the State of
Delaware and make all other filings or recordings required by the DGCL in
connection with the Merger. The Merger shall become effective at such time as
the certificate of merger is duly filed with the Secretary of State


                                       1
<PAGE>


of the State of Delaware or at such later time as Parent and the Company may
agree and is specified in the certificate of merger (the "EFFECTIVE TIME").

     (c) From and after the Effective Time, the Surviving Corporation shall
possess all the rights, privileges, powers and franchises and be subject to all
of the restrictions, disabilities and duties of the Company and Merger
Subsidiary, all as provided under the DGCL.

     (d) The closing of the Merger (the "CLOSING") shall take place (i) at the
offices of Pillsbury Winthrop Shaw Pittman LLP, 50 Fremont Street, San
Francisco, California, as soon as practicable on the day on which the last to be
fulfilled or waived of the conditions set forth in Article 8 (other than those
conditions that by their nature are to be fulfilled at the Closing, but subject
to the fulfillment or waiver of such conditions) shall be fulfilled or waived in
accordance with this Agreement, or (ii) at such other place and time as the
Company and Parent may agree in writing (the "CLOSING DATE").

     Section 1.2  CERTIFICATE OF INCORPORATION AND BY-LAWS OF THE SURVIVING
CORPORATION.

     (a) At the Effective Time, the certificate of incorporation of the
Surviving Corporation, shall be the certificate of incorporation of Merger
Subsidiary as set forth in EXHIBIT A, except for Article FIRST thereof which
shall be amended to read as follows: "The name of this corporation is Unocal
Corporation."

     (b) The by-laws of Merger Subsidiary, as in effect immediately prior to the
Effective Time, shall be the by-laws of the Surviving Corporation until
thereafter amended or changed as provided therein or by the DGCL.

     Section 1.3  DIRECTORS AND OFFICERS OF THE SURVIVING CORPORATION. The
directors of Merger Subsidiary immediately prior to the Effective Time shall be
the initial directors of the Surviving Corporation, each to hold office in
accordance with the certificate of incorporation and by-laws of the Surviving
Corporation, and the officers of Merger Subsidiary immediately prior to the
Effective Time shall be the initial officers of the Surviving Corporation, in
each case until their respective successors are duly elected or appointed and
qualified or until their earlier death, resignation or removal.

     Section 1.4  EFFECT ON CAPITAL STOCK.

     (a) At the Effective Time, subject to the other provisions of Articles 1
and 2, each share of Company Common Stock issued and outstanding immediately
prior to the Effective Time (other than shares of Company Common Stock owned by
Parent, Merger Subsidiary or the Company or any of their respective wholly-owned
subsidiaries and except for any Dissenting Shares), together with the Company
Rights attached thereto or associated therewith, shall, by virtue of this
Agreement and without any action on the part of the holder thereof, be converted
into and shall thereafter represent the right to receive the following
consideration (collectively, the "MERGER CONSIDERATION"):

          (i) Each share of Company Common Stock with respect to which an
     election to receive a combination of stock and cash (a "MIXED ELECTION")
     has been effectively made and not revoked or lost pursuant to Section 2.1
     (each, a "MIXED CONSIDERATION


                                       2
<PAGE>


     ELECTION SHARE") and each No Election Share (as that term is defined in
     Section 1.5(b) hereof) shall be converted into the right to receive the
     combination (which combination shall hereinafter be referred to as the "PER
     SHARE MIXED CONSIDERATION") of (x) $16.25 in cash (the "PER SHARE CASH
     AMOUNT") and (y) 0.7725 of a share of validly issued, fully paid and
     non-assessable shares of Parent Common Stock (the "MIXED ELECTION STOCK
     EXCHANGE RATIO"), subject to adjustment in accordance with Section 1.4(c);

          (ii) Each share of Company Common Stock with respect to which an
     election to receive cash (a "CASH ELECTION") has been effectively made and
     not revoked or lost pursuant to Section 2.1 (each, a "CASH ELECTION SHARE")
     shall be converted (provided that the Available Cash Election Amount (as
     defined below) equals or exceeds the Cash Election Amount (as defined
     below)) into the right to receive $65.00 in cash without interest (the "PER
     SHARE CASH ELECTION CONSIDERATION"); IF, HOWEVER, (A) the product of the
     number of Cash Election Shares and the Per Share Cash Election
     Consideration (such product being the "CASH ELECTION AMOUNT") exceeds (B)
     the difference between (x) the product of the Per Share Cash Amount and the
     total number of shares of Company Common Stock (other than the Cancelled
     Shares) issued and outstanding immediately prior to the Effective Time
     minus (y) the product of the number of Mixed Consideration Election Shares
     (provided that No Election Shares shall be deemed to be Mixed Consideration
     Election Shares for purposes of this Section 1.4(a)(ii)) and the Per Share
     Cash Amount (such difference being the "AVAILABLE CASH ELECTION AMOUNT"),
     then each Cash Election Share shall be converted into a right to receive
     (1) an amount of cash (without interest) equal to the product of (p) the
     Per Share Cash Election Consideration and (q) a fraction, the numerator of
     which shall be the Available Cash Election Amount and the denominator of
     which shall be the Cash Election Amount (such fraction being the "CASH
     FRACTION") and (2) a number of validly issued, fully paid and
     non-assessable shares of Parent Common Stock equal to the product of (r)
     the Exchange Ratio and (s) one (1) minus the Cash Fraction;

          (iii) Each share of Company Common Stock with respect to which an
     election to receive stock consideration (a "STOCK ELECTION") is properly
     made and not revoked or lost pursuant to Section 2.1 (each, a "STOCK
     ELECTION SHARE") shall be converted (provided that the Cash Election Amount
     equals or exceeds the Available Cash Election Amount), into the right to
     receive 1.03 shares (the "EXCHANGE RATIO") of validly issued, fully paid
     and non-assessable shares of Parent Common Stock, subject to adjustment in
     accordance with Section 1.4(c) (together with any cash in lieu of
     fractional shares of Parent Common Stock to be paid pursuant to Section
     2.2, the "STOCK CONSIDERATION"); PROVIDED HOWEVER, if the Available Cash
     Election Amount exceeds the Cash Election Amount, then each Stock Election
     Share shall be converted into the right to receive (1) an amount of cash
     (without interest) equal to the amount of such excess divided by the number
     of Stock Election Shares and (2) a number of validly issued, fully paid and
     non-assessable shares of Parent Common stock equal to the product of (x)
     the Exchange Ratio and (y) a fraction, the numerator of which shall be the
     Per Share Cash Election Consideration minus the amount calculated in clause
     (1) of this paragraph and the denominator of which shall be the Per Share
     Cash Election Consideration.


                                       3
<PAGE>


     (b) From and after the Effective Time, all of the shares of Company Common
Stock, and associated Company Rights, converted into the Merger Consideration
pursuant to this Article 1 shall no longer be outstanding and shall
automatically be cancelled and retired and shall cease to exist, and each holder
of a certificate (each a "CERTIFICATE") previously representing any such shares
of Company Common Stock shall thereafter cease to have any rights with respect
to such securities, except the right to receive (i) the Merger Consideration,
(ii) any dividends and other distributions in accordance with Section 2.1(f),
and (iii) any cash to be paid in lieu of any fractional share of Parent Common
Stock in accordance with Section 2.2.

     (c) If at any time during the period between the date of this Agreement and
the Effective Time, any change in the outstanding shares of capital stock of
Parent or the Company shall occur by reason of any reclassification,
recapitalization, stock split or combination, exchange or readjustment of
shares, or any stock dividend thereon with a record date during such period, the
Merger Consideration, the Per Share Cash Amount, the Mixed Election Stock
Exchange Ratio, the Exchange Ratio and any other similarly dependent items, as
the case may be, shall be appropriately adjusted to provide the holders of
shares of Company Common Stock the same economic effect as contemplated by this
Agreement prior to such event.

     (d) At the Effective Time, (1) all shares of Company Common Stock that are
owned by Parent, Merger Subsidiary or the Company (the "CANCELLED SHARES") shall
be cancelled and retired and shall cease to exist and no stock of Parent, cash
or other consideration shall be delivered in exchange therefor and (2) each
share of Company Common Stock held by any direct or indirect wholly-owned
Subsidiary of Parent (other than Merger Subsidiary) or the Company, in each
case, immediately prior to the Effective Time, shall be converted into the right
to receive the Per Share Stock Consideration. The Per Share Stock Consideration
paid pursuant to this Section 1.4(d) shall not be subject to, and will not be
deemed to be Stock Election Shares or otherwise taken into account in
calculating, adjustments under the proviso to Section 1.4(a)(iii). For the
avoidance of doubt, this Section 1.4(d) shall not apply to shares of Company
Common Stock held in trust or otherwise set aside from shares held in the
Company's treasury pursuant to a Company Benefit Plan (as such term is defined
in Section 3.16) other than a Company Stock Option Plan or a Company Award Plan.

     (e) Each issued and outstanding share of common stock, par value $0.01 per
share of Merger Subsidiary issued and outstanding immediately prior to the
Effective Time shall remain outstanding as one fully paid and non-assessable
share of common stock, par value $0.01 per share, of the Surviving Corporation.

     Section 1.5  ELECTION PROCEDURES.

     (a) An election form and other appropriate and customary transmittal
materials (which shall specify that delivery shall be effected, and risk of loss
and title to the Certificates theretofore representing shares of Company Common
Stock shall pass, only upon proper delivery of such Certificates to the Exchange
Agent) in such form as Parent shall specify and as shall be reasonably
acceptable to the Company (the "ELECTION FORM") shall be mailed together with
the Proxy Statement or at such other time as the Company and Parent may agree
(the "MAILING DATE") to each holder of record of Company Common Stock as of the
close of business


                                       4
<PAGE>


on the record date for notice of the Company Stockholder Meeting (the "ELECTION
FORM RECORD DATE").

     (b) Each Election Form shall permit the holder (or the beneficial owner
through appropriate and customary documentation and instructions), other than
any holder of Dissenting Shares, to specify (i) the number of shares of such
holder's Company Common Stock with respect to which such holder elects to
receive the Per Share Mixed Consideration, (ii) the number of shares of such
holder's Company Common Stock with respect to which such holder elects to
receive the Per Share Stock Consideration, (iii) the number of shares of such
holder's Company Common Stock with respect to which such holder elects to
receive the Per Share Cash Consideration, or (iv) that such holder makes no
election with respect to such holder's Company Common Stock ("NO ELECTION
SHARES"). Any Company Common Stock with respect to which the Exchange Agent has
not received an effective, properly completed Election Form on or before 5:00
p.m., New York time, on the twentieth (20th) day following the Mailing Date (or
such other time and date as the Company and Parent shall agree) (the "ELECTION
DEADLINE") (other than any shares of Company Common Stock that constitute
Dissenting Shares as of such time) shall also be deemed to be No Election
Shares.

     (c) Parent shall make available one or more Election Forms as may
reasonably be requested from time to time by all Persons who become holders (or
beneficial owners) of Company Common Stock between the Election Form Record Date
and the close of business on the Business Day prior to the Election Deadline,
and the Company shall provide to the Exchange Agent all information reasonably
necessary for it to perform as specified herein.

     (d) Any such election shall have been properly made only if the Exchange
Agent shall have actually received a properly completed Election Form by the
Election Deadline. An Election Form shall be deemed properly completed only if
accompanied by one or more Certificates (or customary affidavits and, if
required by Parent or the Surviving Corporation, the posting by such Person of a
bond, in such reasonable amount as the Surviving Corporation may direct, as
indemnity against any claim that may be made against it with respect to such
Certificate) representing all shares of Company Common Stock covered by such
Election Form, together with duly executed transmittal materials included in the
Election Form. Any Election Form may be revoked or changed by the Person
submitting such Election Form, by written notice received by the Exchange Agent
prior to the Election Deadline. In the event an Election Form is revoked prior
to the Election Deadline, the shares of Company Common Stock represented by such
Election Form shall become No Election Shares and Parent shall cause the
Certificates representing such shares of Company Common Stock to be promptly
returned without charge to the Person submitting the Election Form upon written
request to that effect from the holder who submitted the Election Form, except
to the extent (if any) a subsequent election is properly made with respect to
any or all of such shares of Company Common Stock. Subject to the terms of this
Agreement and of the Election Form, the Exchange Agent shall have reasonable
discretion to determine whether any election, revocation or change has been
properly or timely made and to disregard immaterial defects in the Election
Forms, and any good faith decisions of the Exchange Agent regarding such matters
shall be binding and conclusive. None of Parent, Company or the Exchange Agent
shall be under any obligation to notify any Person of any defect in an Election
Form.


                                       5
<PAGE>


     Section 1.6 DISSENTING SHARES. Notwithstanding anything in this Agreement
to the contrary, with respect to each share of Company Common Stock as to which
the holder thereof shall have properly complied with the provisions of section
262 of the DGCL as to appraisal rights (each, a "DISSENTING SHARE"), if any,
such holder shall be entitled to payment, solely from the Surviving Corporation,
of the appraisal value of the Dissenting Shares to the extent permitted by and
in accordance with the provisions of section 262 of the DGCL; provided, however,
that (i) if any holder of Dissenting Shares, under the circumstances permitted
by and in accordance with the DGCL, affirmatively withdraws his demand for
appraisal of such Dissenting Shares, (ii) if any holder of Dissenting Shares
fails to establish his entitlement to appraisal rights as provided in the DGCL
or (iii) if any holder of Dissenting Shares takes or fails to take any action
the consequence of which is that such holder is not entitled to payment for his
shares under the DGCL, such holder or holders (as the case may be) shall forfeit
the right to appraisal of such shares of Company Common Stock and such shares of
Company Common Stock shall thereupon cease to constitute Dissenting Shares and
if such forfeiture shall occur following the Election Deadline, each such share
of Company Common Stock shall thereafter be deemed to have been converted into
and to have become, as of the Effective Time, the right to receive, without
interest thereon, the Per Share Stock Consideration; provided that Parent shall
be entitled to convert each such share into the right to receive the Per Share
Cash Consideration or a combination of the Per Share Cash Consideration and Per
Share Stock Consideration if (x) Parent shall have received an opinion from
McDermott Will & Emery LLP and (y) the Company shall have received an opinion
from Wachtell, Lipton, Rosen & Katz, in each case, to the effect that the Merger
will not fail to satisfy the continuity of interest requirement under Section
368 of the Code as a result thereof. The Company shall give Parent prompt notice
of any demands received by the Company for appraisal of shares of Company Common
Stock, and Parent shall have the right to participate in all negotiations and
proceedings with respect to such demands. The Company shall not settle, make any
payments with respect to, or offer to settle, any claim with respect to
Dissenting Shares without the written consent of Parent.

     Section 1.7  STOCK OPTIONS AND EQUITY AWARDS.

     (a) The Board of Directors of the Company shall take such action as is
necessary so that at the Effective Time, each outstanding option to purchase
shares of Company Common Stock (a "COMPANY STOCK OPTION") and each phantom
option to receive cash measured by an increase in value of Company Common Stock
over a specified base or exercise price (a "COMPANY PHANTOM STOCK OPTION")
granted under the Company's plans or agreements identified in Section 3.16(a) of
the Company Disclosure Schedules as being, to the Company's knowledge, the only
employee benefit plans or agreements (including nonemployee director plans) as
to which shares of Company Common Stock may be issued upon exercise of an option
(collectively the "COMPANY STOCK OPTION PLANS"), whether or not vested, shall
cease to represent a right to acquire shares of Company Common Stock or a
Company Phantom Stock Option with respect to Company Common Stock, and shall
thereafter constitute an option to acquire or to be a phantom option with
respect to, as the case may be, on the same terms and conditions as were
applicable under such Company Stock Option or Company Phantom Stock Option, as
applicable, pursuant to the relevant Company Stock Option Plan under which it
was issued and the agreement evidencing the grant thereof prior to the Effective
Time, including any provisions for acceleration (as such terms and conditions
have been interpreted and applied by the Company in accordance with its past
practice), the number (rounded down to the nearest whole


                                       6
<PAGE>


number) of shares of Parent Common Stock determined by multiplying (x) the
number of shares of Company Common Stock subject to such Company Stock Option or
Company Phantom Stock Option immediately prior to the Effective Time by (y) the
Stock Award Exchange Ratio. The exercise price or base price per share of Parent
Common Stock subject to any such Company Stock Option or Company Phantom Stock
Option at and after the Effective Time shall be an amount (rounded up to the
nearest one hundredth of a cent) equal to (A) the exercise price or base price
per share of Company Common Stock subject to such Company Stock Option or
Company Phantom Stock Option prior to the Effective Time divided by (B) the
Stock Award Exchange Ratio. In addition, prior to the Effective Time, the
Company shall make any amendments to the terms of such Company Stock Option
Plans that are necessary to give effect to the transactions contemplated by this
Section 1.7. For purposes of this Section 1.7, the "STOCK AWARD EXCHANGE RATIO"
shall mean the sum of (i) the Mixed Election Stock Exchange Ratio plus (ii) the
fraction resulting from dividing the Per Share Cash Amount by the closing price
per share of the Parent Common Stock on the NYSE on the last trading day
immediately preceding the Closing Date.

     (b) At the Effective Time each right, award or account, contingent or
accrued, to receive shares of Company Common Stock or benefits measured in whole
or in part by the value of a number of shares of Company Common Stock, and each
award of any kind consisting of shares of Company Common Stock, outstanding as
of the Effective Time other than a Company Stock Option or a Company Phantom
Stock Option (a "COMPANY AWARD") granted under any employee incentive or benefit
plan, program or agreement or nonemployee director plan maintained by the
Company or any Subsidiary on or prior to the date hereof that provides for
grants of equity-based awards or equity-based accounts and which are identified
on Schedule 3.16 (collectively the "COMPANY AWARD PLANS") whether or not vested,
shall cease to represent a right, award or account with respect Company Common
Stock and shall thereafter constitute a right, award or account, on the same
terms and conditions as were applicable under such Company Award pursuant to the
relevant Company Award Plan under which it was issued and the agreement,
including any provisions for acceleration (as such terms and conditions have
been interpreted and applied by the Company in accordance with its past
practice), with respect to the number (rounded to the nearest whole number) of
shares of Parent Common Stock determined by multiplying (x) the number of shares
of Company Common Stock subject to such Company Award immediately prior to the
Effective Time by (y) the Stock Award Exchange Ratio, PROVIDED that in the case
of any performance shares outstanding as of the Effective Time, such performance
shares shall be paid at the Effective Time at 100% of target, except that the
2005 performance share awards shall be paid at the Effective Time at between
100% and 150% of target, as determined in good faith by the Company's Management
Development and Compensation Committee pursuant to the terms of the plan and the
underlying award agreement. The other terms and conditions of each Company
Award, and the plans or agreements under which they were issued, shall continue
to apply in accordance with their terms and conditions, including any provisions
for acceleration (as such terms and conditions have been interpreted and applied
by the Company in accordance with its past practice). The Company represents and
warrants that to the Company's knowledge there are as of the date hereof no
Company Awards or Company Stock Options other than those reflected in Schedule
3.5.

     (c) (i) Parent shall take all corporate action necessary to assume as of
the Effective Time the Company's obligations under the Company Stock Options and
Company Awards and


                                       7
<PAGE>


reserve for issuance a sufficient number of shares of Parent Common Stock for
delivery pursuant to the terms set forth in this Section 1.7. (ii) As soon as
practicable after the Effective Time and in any event no later than five days
after the Effective Time, Parent shall file with the U.S. Securities and
Exchange Commission (the "COMMISSION") a registration statement on an
appropriate form or a post-effective amendment to a previously filed
registration statement under the Securities Act with respect to the Parent
Common Stock subject to options and other equity-based awards described in this
Section 1.7 and shall use its reasonable best efforts to maintain the current
status of the prospectus contained therein, as well as comply with any
applicable state securities or "blue sky" laws, for so long as such options or
other equity-based awards remain outstanding.

     Section 1.8 SHARES HELD BY COMPANY AFFILIATES. Anything to the contrary
herein notwithstanding, no shares of Parent Common Stock (or certificates
therefor) shall be issued in exchange for any Certificate to any "affiliate" of
the Company (identified pursuant to Section 7.8) until such Person shall have
delivered to Parent duly executed letters as contemplated by Section 7.8. Such
Persons shall be subject to the restrictions described in such letters, and such
shares (or certificates therefor) shall bear a legend describing such
restrictions.

                                   ARTICLE II

                            EXCHANGE OF CERTIFICATES

     Section 2.1 SURRENDER AND PAYMENT.

     (a) Prior to the Effective Time, Parent shall appoint Mellon Investor
Services LLC or such other exchange agent reasonably acceptable to the Company
(the "EXCHANGE AGENT") for the purpose of exchanging Certificates representing
shares of Company Common Stock and non-certificated shares represented by book
entry ("BOOK-ENTRY SHARES") for the Merger Consideration. Parent will make
available to the Exchange Agent, as needed, the Merger Consideration to be
delivered in respect of the shares of Company Common Stock. Promptly after the
Effective Time, Parent will send, or will cause the Exchange Agent to send, to
each holder of record of shares of Company Common Stock as of the Effective Time
(other than any holder which has previously and properly surrendered all of its
Certificates(s) to the Exchange Agent in accordance with Section 1.5 (each, an
"ELECTING STOCKHOLDER")), a letter of transmittal for use in such exchange
(which shall specify that the delivery shall be effected, and risk of loss and
title shall pass, only upon proper delivery of the Certificates to the Exchange
Agent) in such form as the Company and Parent may reasonably agree, for use in
effecting delivery of shares of Company Common Stock to the Exchange Agent.
Exchange of any Book-Entry Shares shall be effected in accordance with Parent's
customary procedures with respect to securities represented by book entry.

     (b) Each holder of shares of Company Common Stock that have been converted
into a right to receive the Merger Consideration, upon (i) with respect to any
Electing Stockholder, completion of the calculations required by Section 1.4(a)
or (ii) with respect to any holder that is not an Electing Stockholder,
surrender to the Exchange Agent of a Certificate, together with a properly
completed letter of transmittal, will be entitled to receive (A) one or more
shares of Parent Common Stock (which shall be in non-certificated book-entry
form unless a physical


                                       8
<PAGE>


certificate is requested) representing, in the aggregate, the whole number of
shares of Parent Common Stock, if any, that such holder has the right to receive
pursuant to Section 1.4 and (B) a check in the amount equal to the cash portion
of the Merger Consideration, if any, that such holder has the right to receive
pursuant to Section 1.4 and this Article 2, including cash payable in lieu of
fractional shares pursuant to Section 2.2 and dividends and other
distributions pursuant to Section 2.1(f). No interest shall be paid or accrued
on any Merger Consideration, cash in lieu of fractional shares or on any unpaid
dividends and distributions payable to holders of Certificates. Until so
surrendered, each such Certificate shall, after the Effective Time, represent
for all purposes only the right to receive such Merger Consideration.

     (c) If any portion of the Merger Consideration is to be registered in the
name of a Person other than the Person in whose name the applicable surrendered
Certificate is registered, it shall be a condition to the registration thereof
that the surrendered Certificate shall be properly endorsed or otherwise be in
proper form for transfer and that the Person requesting such delivery of the
Merger Consideration shall pay to the Exchange Agent any transfer or other
similar Taxes required as a result of such registration in the name of a Person
other than the registered holder of such Certificate or establish to the
satisfaction of the Exchange Agent that such Tax has been paid or is not
payable. For purposes of this Agreement, "PERSON" means an individual, a
corporation, a limited liability company, a partnership, an association, a trust
or any other entity or organization, including a government or political
subdivision or any agency or instrumentality thereof.

     (d) After the Effective Time, there shall be no further registration of
transfers of shares of Company Common Stock. If, after the Effective Time,
Certificates are presented to the Exchange Agent, the Surviving Corporation or
the Parent, they shall be canceled and exchanged for the consideration provided
for, and in accordance with the procedures set forth, in this Article 2.

     (e) Any portion of the Merger Consideration made available to the Exchange
Agent pursuant to Section 2.1(a) that remains unclaimed by the holders of shares
of Company Common Stock one year after the Effective Time shall be returned to
Parent, upon demand, and any such holder who has not exchanged his shares of
Company Common Stock for the Merger Consideration in accordance with this
Section 2.1 prior to that time shall thereafter look only to Parent for delivery
of the Merger Consideration in respect of such holder's shares. Notwithstanding
the foregoing, Parent shall not be liable to any holder of shares for any Merger
Consideration delivered to a public official pursuant to applicable abandoned
property laws. Any Merger Consideration remaining unclaimed by holders of shares
of Company Common Stock three years after the Effective Time (or such earlier
date immediately prior to such time as such amounts would otherwise escheat to
or become property of any governmental entity) shall, to the extent permitted by
applicable law, become the property of Parent free and clear of any claims or
interest of any Person previously entitled thereto.

     (f) No dividends or other distributions with respect to shares of Parent
Common Stock issued in the Merger shall be paid to the holder of any
unsurrendered Certificates or Book-Entry Shares until such Certificates or
Book-Entry Shares are surrendered as provided in this Section 2.1. Following
such surrender, there shall be paid, without interest, to the record holder of
the shares of Parent Common Stock issued in exchange therefor (i) at the time of
such


                                       9
<PAGE>


surrender, all dividends and other distributions payable in respect of such
shares of Parent Common Stock with a record date after the Effective Time and a
payment date on or prior to the date of such surrender and not previously paid
and (ii) at the appropriate payment date, the dividends or other distributions
payable with respect to such shares of Parent Common Stock with a record date
after the Effective Time but with a payment date subsequent to such surrender.
For purposes of dividends or other distributions in respect of shares of Parent
Common Stock, all shares of Parent Common Stock to be issued pursuant to the
Merger shall be entitled to dividends pursuant to the immediately preceding
sentence as if issued and outstanding as of the Effective Time.

     (g) Any portion of the Merger Consideration deposited with the Exchange
Agent pursuant to Section 2.1 to pay for Shares for which appraisal rights shall
have been perfected shall be returned to Parent, upon demand.

     Section 2.2  FRACTIONAL SHARES.

     (a) No fractional shares of Parent Common Stock shall be issued in the
Merger, but in lieu thereof each holder of shares of Company Common Stock
otherwise entitled to a fractional share of Parent Common Stock will be entitled
to receive, from the Exchange Agent in accordance with the provisions of this
Section 2.2, a cash payment in lieu of such fractional shares of Parent Common
Stock representing such holder's proportionate interest, if any, in the proceeds
from the sale by the Exchange Agent in one or more transactions of shares of
Parent Common Stock equal to the excess of (x) the aggregate number of shares of
Parent Common Stock to be delivered to the Exchange Agent by Parent pursuant to
Section 2.1(a) over (y) the aggregate number of whole shares of Parent Common
Stock to be distributed to the holders of Certificates pursuant to Section
2.1(b) (such excess being herein called the "EXCESS SHARES"). The parties
acknowledge that payment of the cash consideration in lieu of issuing fractional
shares was not separately bargained-for consideration but merely represents a
mechanical rounding off for purposes of avoiding the expense and inconvenience
to Parent that would otherwise be caused by the issuance of fractional shares.
As soon as practicable after the Effective Time, the Exchange Agent, as agent
for the holders of the Certificates representing shares of Company Common Stock,
shall sell the Excess Shares at then prevailing prices on the New York Stock
Exchange ("NYSE") in the manner provided in the following paragraph.

     (b) The sale of the Excess Shares by the Exchange Agent, as agent for the
holders that would otherwise receive fractional shares, shall be executed on the
NYSE through one or more member firms of the NYSE and shall be executed in round
lots to the extent practicable. The compensation payable to the Exchange Agent
and the expenses incurred by the Exchange Agent, in each case, in connection
with such sale or sales of the Excess Shares, and all related commissions,
transfer taxes and other out-of-pocket transaction costs, will be paid by the
Surviving Corporation out of its own funds and will not be paid directly or
indirectly by Parent. Until the proceeds of such sale or sales have been
distributed to the holders of shares of Company Common Stock, the Exchange Agent
shall hold such proceeds in trust for the holders of shares of Company Common
Stock (the "COMMON SHARES TRUST"). The Exchange Agent shall determine the
portion of the Common Shares Trust to which each holder of shares of Company
Common Stock shall be entitled, if any, by multiplying the amount of the
aggregate proceeds comprising the Common Shares Trust by a fraction, the
numerator of which is the


                                       10
<PAGE>


amount of the fractional share interest to which such holder of shares of
Company Common Stock would otherwise be entitled and the denominator of which is
the aggregate amount of fractional share interests to which all holders of
shares of Company Common Stock would otherwise be entitled.

     (c) As soon as practicable after the determination of the amount of cash,
if any, to be paid to holders of shares of Company Common Stock in lieu of any
fractional shares of Parent Common Stock, the Exchange Agent shall make
available such amounts to such holders of shares of Company Common Stock without
interest, subject to and in accordance with Section 2.1.

     Section 2.3 LOST CERTIFICATES. If any Certificate shall have been lost,
stolen or destroyed, upon the making of an affidavit of that fact by the Person
claiming such Certificate to be lost, stolen or destroyed and, if required by
Parent or the Surviving Corporation, the posting by such Person of a bond, in
such reasonable amount as the Surviving Corporation may direct, as indemnity
against any claim that may be made against it with respect to such Certificate,
the Exchange Agent will issue in exchange for such lost, stolen or destroyed
Certificate the Merger Consideration to be paid in respect of the shares of
Company Common Stock represented by such Certificate as contemplated by this
Article 2.

     Section 2.4 WITHHOLDING RIGHTS. Each of the Surviving Corporation and
Parent shall be entitled to deduct and withhold from the consideration otherwise
payable to any Person pursuant to Articles 1 and 2 such amounts as it is
required to deduct and withhold with respect to the making of such payment under
any provision of federal, state, local or foreign tax law. To the extent that
amounts are so deducted or withheld by the Surviving Corporation or Parent, as
the case may be, and paid over to the applicable governmental entity, such
deducted or withheld amounts shall be treated for all purposes of this Agreement
as having been paid to the holder of the shares of Company Common Stock in
respect of which such deduction and withholding was made by the Surviving
Corporation or Parent, as the case may be.

                                  ARTICLE III

                 REPRESENTATIONS AND WARRANTIES OF THE COMPANY

     The Company represents and warrants to Parent that, except as disclosed in
the Company Commission Documents (as hereinafter defined) filed or furnished
prior to the date hereof or in the correspondingly numbered section of the
disclosure schedules delivered by the Company to Parent simultaneously with the
execution of this Agreement (the "COMPANY DISCLOSURE SCHEDULES") (it being
agreed that disclosure of any item in any section of the Company Disclosure
Schedules shall be deemed disclosure with respect to any other section of this
Agreement to which the relevance of such item is reasonably apparent):

     Section 3.1 CORPORATE EXISTENCE AND POWER. The Company is a corporation
duly incorporated, validly existing and in good standing under the laws of the
State of Delaware and has all corporate powers and all governmental franchises,
licenses, permits, authorizations, consents and approvals required to enable it
to own, lease or otherwise hold its properties and assets and to carry on its
business as now conducted, except for those the absence of which


                                       11
<PAGE>


would not, individually or in the aggregate, be reasonably likely to have a
Company Material Adverse Effect (as defined below). The Company is duly
qualified to do business as a foreign corporation and is in good standing in
each jurisdiction where the character of the property owned or leased by it or
the nature of its activities or the ownership or leasing of its properties make
such qualification necessary, except for those jurisdictions where the failure
to be so qualified would not, individually or in the aggregate, be reasonably
likely to have a Company Material Adverse Effect. For purposes of this
Agreement, "COMPANY MATERIAL ADVERSE EFFECT" means a material adverse effect on
the financial condition, business, liabilities, assets or continuing results of
operations of the Company and its Subsidiaries, taken as a whole, except to the
extent resulting from (x) any changes in general United States or global
economic conditions, or (y) any changes affecting the oil and gas industry in
general (including changes to commodity prices). The Company has heretofore made
available to Parent true and complete copies of the Certificate of Incorporation
of the Company, as amended to the date of this Agreement (as so amended, the
"COMPANY CHARTER"), and the By-laws of the Company, as amended to the date of
this Agreement (as so amended, the "COMPANY BY-LAWS").

     Section 3.2  CORPORATE AUTHORIZATION.

     (a) The execution, delivery and performance by the Company of this
Agreement and the consummation by the Company of the transactions contemplated
hereby are within the Company's corporate powers and, except for any required
approval by the Company's stockholders (the "COMPANY STOCKHOLDER APPROVAL") in
connection with the consummation of the Merger, have been duly authorized by all
necessary corporate action. The affirmative vote of holders of a majority of the
outstanding shares of Company Common Stock in favor of the approval and adoption
of this Agreement and the Merger is the only vote of the holders of any of the
Company's capital stock necessary in connection with consummation of the Merger.
Assuming due authorization, execution and delivery of this Agreement by Parent
and Merger Subsidiary this Agreement constitutes a valid and binding agreement
of the Company enforceable against the Company in accordance with its terms,
subject to bankruptcy, insolvency, fraudulent transfer, reorganization,
moratorium and similar laws of general applicability relating to or affecting
creditors' rights, and to general equity principles.

     (b) The Company's Board of Directors, at a meeting duly called and held on
or prior to the date hereof, has (i) determined that this Agreement and the
transactions contemplated hereby (including the Merger) are fair to and in the
best interests of the Company's stockholders, (ii) approved and adopted this
Agreement and the transactions contemplated hereby (including the Merger), and
(iii) resolved (subject to Section 5.2) to recommend the approval and adoption
of this Agreement and the Merger by its stockholders.

     Section 3.3 GOVERNMENTAL AUTHORIZATION. The execution, delivery and
performance by the Company of this Agreement and the consummation by the Company
of the transactions contemplated hereby require no action by or in respect of,
or filing with, any governmental body, agency, official or authority other than
(a) the filing of a certificate of merger in accordance with the DGCL, (b)
compliance with any applicable requirements of the Hart-Scott-Rodino Antitrust
Improvements Act of 1976, as amended (the "HSR ACT"), (c) compliance with any
applicable requirements of Council Regulation (EC) No. 139/2004 of 20 January
2004 on the control of concentrations between undertakings (published in the
Official Journal of the European Union on


                                       12
<PAGE>


January 29, 2004 at L 24/1) (the "EC MERGER REGULATION"), (d) compliance with
any applicable requirements of laws, rules and regulations in other foreign
jurisdictions governing antitrust or merger control matters, (e) compliance with
any applicable requirements of the Securities Exchange Act of 1934, as amended,
and the rules and regulations promulgated thereunder (the "EXCHANGE ACT"), (f)
compliance with any applicable requirements of the Securities Act of 1933, as
amended, and the rules and regulations promulgated thereunder (the "SECURITIES
ACT"); (g) the appropriate filings and approvals under the rules of the NYSE;
and (h) other actions or filings which if not taken or made would not,
individually or in the aggregate, be reasonably likely to have a Company
Material Adverse Effect.

     Section 3.4 NON-CONTRAVENTION. The execution, delivery and performance by
the Company of this Agreement and the consummation by the Company of the
transactions contemplated hereby do not and will not, assuming compliance with
the matters referred to in Sections 3.2 and 3.3, (a) contravene or conflict with
the Company Charter or the Company By-Laws or the organizational documents of
any Company Subsidiary, (b) contravene or conflict with or constitute a
violation of any provision of any law, regulation, judgment, injunction, order
or decree binding upon or applicable to the Company or any of its Subsidiaries,
(c) constitute a default (or an event which with notice or the passage of time
would become a default) under or give rise to a material right of termination,
cancellation or acceleration of any right or obligation of the Company or any of
its Subsidiaries or to a loss of any material benefit to which the Company or
any of its Subsidiaries is entitled under any provision of any agreement,
contract or other instrument binding upon the Company or any of its Subsidiaries
or any license, franchise, permit or other similar authorization held by the
Company or any of its Subsidiaries, or (d) result in the creation or imposition
of any Lien on any asset of the Company or any of its Subsidiaries, except for
such contraventions, conflicts or violations referred to in clause (b) or
defaults, rights of termination, cancellation or acceleration, or losses or
Liens referred to in clause (c) or (d) that would not, individually or in the
aggregate, be reasonably likely to have a Company Material Adverse Effect. For
purposes of this Agreement, "LIEN" means, with respect to any asset, any
mortgage, lien, pledge, charge, security interest or encumbrance of any kind in
respect of such asset other than any such mortgage, lien, pledge, charge,
security interest or encumbrance (i) for Taxes (as defined in Section 3.15) not
yet due or being contested in good faith (and for which adequate accruals or
reserves have been established on the Parent Balance Sheet or the Company
Balance Sheet, as the case may be) or (ii) which is a carriers', warehousemen's,
mechanics', materialmen's, repairmen's or other like lien arising in the
ordinary course of business.

     Section 3.5 CAPITALIZATION. The authorized capital stock of the Company
consists of 750,000,000 shares of common stock, par value $1.00 per share (the
"COMPANY COMMON STOCK") and 100,000,000 shares of preferred stock, par value
$0.10 per share (the "COMPANY PREFERRED STOCK", and together with the Company
Common Stock, the "COMPANY CAPITAL STOCK"). As of March 31, 2005, there were
outstanding (i) 271,654,896 shares of Company Common Stock, (ii) no shares of
Series B Junior Participating Preferred Stock (all of which are reserved for
issuance in accordance with the Rights Agreement (as amended, the "COMPANY
RIGHTS AGREEMENT") dated as of January 5, 2000, as amended, between the Company
and Mellon Investor Services LLC (formerly known as ChaseMellon Shareholder
Services, L.L.C.), as Rights Agent, pursuant to which the Company has issued
rights to purchase Series B Junior Participating Preferred Stock ("COMPANY
RIGHTS")) and no other shares of capital stock or other voting securities of the
Company were then outstanding. All outstanding shares of Company


                                       13
<PAGE>


Capital Stock have been duly authorized, validly issued, and are fully paid and
nonassessable. As of March 31, 2005, there were outstanding (A) Company Awards
(other than shares of restricted stock or other awards included in the number of
shares of Company Common Stock outstanding set forth above) with respect to
983,963 shares of Company Common Stock and (B) Company Stock Options to purchase
6,278,458 shares of Company Common Stock. Except as set forth in this Section
3.5 and except for changes since the close of business on March 31, 2005
resulting from the exercise of employee stock options outstanding on such date,
or the payment or redemption of other stock-based awards outstanding on such
date or other securities issued as permitted by Section 5.1, there are
outstanding (a) no shares of capital stock or other voting securities of the
Company, (b) no Company Awards and (c) except for the Company Rights, (1) no
options, warrants or other rights to acquire from the Company any capital stock,
voting securities or securities convertible into or exchangeable for capital
stock or voting securities of the Company, and (2) no preemptive or similar
rights, subscription or other rights, convertible securities, agreements,
arrangements or commitments of any character, relating to the capital stock of
the Company, obligating the Company to issue, transfer or sell any capital
stock, voting securities or securities convertible into or exchangeable for
capital stock or voting securities of the Company or obligating the Company to
grant, extend or enter into any such option, warrant, subscription or other
right, convertible security, agreement, arrangement or commitment (the items in
the foregoing subclauses (a), (b) and (c) being referred to collectively as
"COMPANY SECURITIES"). Except as required by the terms of any Company Stock
Options or Company Awards as permitted by Section 5.1(e), there are no
outstanding obligations of the Company or any of its Subsidiaries to repurchase,
redeem or otherwise acquire any Company Securities.

     Section 3.6  SUBSIDIARIES.

     (a) Each Subsidiary of the Company is duly organized, validly existing and
in good standing under the laws of its jurisdiction of organization, has all
powers and all governmental licenses, authorizations, consents and approvals
required to carry on its business as now conducted, except for those the absence
of which would not, individually or in the aggregate, be reasonably likely to
have a Company Material Adverse Effect. For purposes of this Agreement, the term
"SUBSIDIARY" when used with respect to any Person means any other Person,
whether incorporated or unincorporated, of which (i) more than fifty percent of
the voting securities or other ownership interests or (ii) securities or other
interests having by their terms ordinary voting power to elect more than fifty
percent of the board of directors or others performing similar functions with
respect to such corporation or other organization, is directly owned or
controlled by such Person or by any one or more of its Subsidiaries. Each
Subsidiary of the Company is duly qualified to do business and is in good
standing in each jurisdiction where the character of the property owned or
leased by it or the nature of its activities makes such qualification necessary,
except for those jurisdictions where failure to be so qualified would not,
individually or in the aggregate, be reasonably likely to have a Company
Material Adverse Effect. All "significant subsidiaries," as such term is defined
in Section 1-02 of Regulation S-X under the Exchange Act of the Company and all
entities listed on Exhibit 21 to the Company 10-K (collectively, "SIGNIFICANT
SUBSIDIARIES") and their respective jurisdictions of incorporation are
identified in Section 3.6(a) of the Company Disclosure Schedules.

     (b) Except for directors' qualifying shares, all of the outstanding capital
stock of, or other ownership interests in, each Significant Subsidiary of the
Company is owned by the


                                       14
<PAGE>


Company, directly or indirectly, free and clear of any material Lien and free of
any other material limitation or restriction (including any restriction on the
right to vote, sell or otherwise dispose of such capital stock or other
ownership interests). There are no outstanding (i) securities of the Company or
any of its Significant Subsidiaries convertible into or exchangeable for shares
of capital stock or other voting securities or ownership interests in any
Significant Subsidiary of the Company or (ii) options, warrants or other rights
to acquire from the Company or any of its Significant Subsidiaries any capital
stock, voting securities or other ownership interests in, or any securities
convertible into or exchangeable for any capital stock, voting securities or
ownership interests in, any Significant Subsidiary of the Company, and no
preemptive or similar rights, subscription or other rights, convertible
securities, agreements, arrangements or commitments of any character, relating
to the capital stock of any Significant Subsidiary of the Company, obligating
the Company or any of its Significant Subsidiaries to issue, transfer or sell,
any capital stock, voting securities or other ownership interests in, or any
securities convertible into or exchangeable for any capital stock, voting
securities or ownership interests in, any Significant Subsidiary of the Company
or obligating the Company or any Significant Subsidiary of the Company to grant,
extend or enter into any such option, warrant, subscription or other right,
convertible security, agreement, arrangement or commitment (the items in the
foregoing subclauses 3.6(b)(i) and (ii) being referred to collectively as
"COMPANY SUBSIDIARY SECURITIES"). There are no outstanding obligations of the
Company or any of its Subsidiaries to repurchase, redeem or otherwise acquire
any outstanding Company Subsidiary Securities. No Subsidiary of the Company is,
or since January 1, 2003 has been, subject to any requirement to file periodic
reports under the Exchange Act.

     Section 3.7  COMMISSION FILINGS.

     (a) The Company has made available to Parent (i) its annual reports on Form
10-K for its fiscal years ended December 31, 2003 and 2004, (ii) its quarterly
reports on Form 10-Q for its fiscal quarters ended after December 31, 2004,
(iii) its proxy or information statements relating to meetings of, or actions
taken without a meeting by, the stockholders of the Company held since December
31, 2003, and (iv) all of its other reports, statements, schedules and
registration statements filed with the Commission since December 31, 2003 (the
documents referred to in this Section 3.7(a) being referred to collectively as
the "COMPANY COMMISSION DOCUMENTS"). The Company's annual report on Form 10-K
for its fiscal year ended December 31, 2004 is referred to herein as the
"COMPANY 10-K."

     (b) As of its filing date, each Company Commission Document complied as to
form in all material respects with the applicable requirements of the Exchange
Act, the Securities Act and the Sarbanes-Oxley Act of 2002 and the rules and
regulations thereunder.

     (c) As of its filing date, each Company Commission Document filed pursuant
to the Exchange Act did not contain any untrue statement of a material fact or
omit to state any material fact necessary in order to make the statements made
therein, in the light of the circumstances under which they were made, not
misleading.

     (d) Each registration statement, as amended or supplemented, if applicable,
filed by the Company since January 1, 2003 pursuant to the Securities Act as of
the date such statement or amendment became effective did not contain any untrue
statement of a material fact or omit to


                                       15
<PAGE>


state any material fact required to be stated therein or necessary to make the
statements therein not misleading.

     (e) The Company has timely filed with or furnished to the Commission all
forms, reports, schedules, registration statements, proxy statements and other
documents required to be filed with or furnished to the Commission by the
Company since January 1, 2003.

     Section 3.8 FINANCIAL STATEMENTS. The audited consolidated financial
statements and unaudited consolidated interim financial statements of the
Company (including any related notes and schedules) included in its annual
reports on Form 10-K and the quarterly reports on Form 10-Q referred to in
Section 3.7 present fairly, in all material respects, the consolidated financial
position of the Company and its consolidated Subsidiaries as of the dates
thereof and the consolidated results of their operations and their cash flows
for the periods then ended (subject to normal year-end adjustments and the
absence of notes in the case of any unaudited interim financial statements), in
each case in conformity with United States generally accepted accounting
principles ("GAAP") applied on a consistent basis (except as may be indicated in
the notes thereto). For purposes of this Agreement, "COMPANY BALANCE SHEET"
means the consolidated balance sheet of the Company as of December 31, 2004 set
forth in the Company 10-K and "COMPANY BALANCE SHEET DATE" means December 31,
2004.

     Section 3.9  DISCLOSURE DOCUMENTS.

     (a) Neither the proxy statement of the Company (the "COMPANY PROXY
STATEMENT") to be filed with the Commission in connection with the Merger, nor
any amendment or supplement thereto, will, at the date the Company Proxy
Statement or any such amendment or supplement is first mailed to stockholders of
the Company or at the time such stockholders vote on the adoption and approval
of this Agreement and the transactions contemplated hereby, contain any untrue
statement of a material fact or omit to state any material fact necessary in
order to make the statements therein, in light of the circumstances under which
they were made, not misleading. The Company Proxy Statement, including all
amendments or supplements thereto, will, when filed, comply as to form in all
material respects with the requirements of the Exchange Act. Notwithstanding the
foregoing, no representation or warranty is made by the Company in this Section
3.9 with respect to statements made or incorporated by reference therein based
on information supplied by Parent or Merger Subsidiary for inclusion or
incorporation by reference in the Company Proxy Statement.

     (b) None of the information supplied or to be supplied by the Company for
inclusion or incorporation by reference in the Form S-4 (as defined in Section
4.8(a)) or any amendment or supplement thereto will, at the time the Form S-4 or
any such amendment or supplement becomes effective under the Securities Act or
at the Effective Time, as the case may be, contain any untrue statement of a
material fact or omit to state a material fact required to be included in order
to make the statements therein, in light of the circumstances under which they
were made, not misleading.

     Section 3.10  CONTROLS AND PROCEDURES.


                                       16
<PAGE>


     (a) Each of the principal executive officer and the principal financial
officer of the Company (or each former principal executive officer and former
principal financial officer of the Company, as applicable) has made all
certifications required under Sections 302 and 906 of the Sarbanes-Oxley Act of
2002 and the related rules and regulations promulgated thereunder and under the
Exchange Act (collectively, the "SARBANES-OXLEY ACT") with respect to Company
Commission Documents, and the Company has delivered to Parent a summary of any
disclosure made by management to the Company's auditors and audit committee
since January 1, 2003 referred to in such certifications. For purposes of the
preceding sentence, "principal executive officer" and "principal financial
officer" shall have the meanings given to such terms in the Sarbanes-Oxley Act.

     (b) The Company has (i) designed and maintained disclosure controls and
procedures (as defined in Rule 13a-15(e) under the Exchange Act) to ensure that
material information required to be disclosed by the Company in the reports it
files or furnishes under the Exchange Act is communicated to its management by
others within those entities as appropriate to allow timely decisions regarding
required disclosure, (ii) disclosed, based on its most recent evaluation, to its
auditors and the audit committee of its Board of Directors (A) any significant
deficiencies or material weaknesses in the design or operation of internal
controls over financial reporting which could adversely affect its ability to
record, process, summarize and report financial data and (B) any fraud, whether
or not material, that involves management or other employees who have a
significant role in its internal controls over financial reporting and (iii)
identified for the Company's auditors any material weaknesses in internal
controls. The Company has provided to Parent true and correct copies of any of
the foregoing disclosures to the auditors or audit committee that have been made
in writing from January 1, 2003 through the date hereof, and will promptly
provide to Parent true and correct copies of any such disclosure that is made
after the date hereof.

     (c) The Company has designed and maintains a system of internal controls
over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act)
sufficient to provide reasonable assurance concerning the reliability of
financial reporting and the preparation of financial statements for external
purposes in accordance with GAAP, including reasonable assurance (i) that
transactions are executed in accordance with management's general or specific
authorizations and recorded as necessary to permit preparation of financial
statements in conformity with GAAP and to maintain asset accountability and (ii)
regarding prevention or timely detection of any unauthorized acquisition, use or
disposition of assets that could have a material effect on the Company's
financial statements. The Company's management, with the participation of the
Company's principal executive and financial officers, has completed an
assessment of the effectiveness of the Company's internal controls over
financial reporting in compliance with the requirements of Section 404 of the
Sarbanes-Oxley Act for the year ended December 31, 2004, and such assessment
concluded that such internal controls were effective using the framework
specified in the Company 10-K.

     (d) No personal loan or other extension of credit by the Company or any
Subsidiary to any of its or their executive officers or directors has been made
or modified (other than as permitted by Section 13 of the Exchange Act and
Section 402 of the Sarbanes-Oxley Act) since July 31, 2002.


                                       17
<PAGE>


     (e) Since January 1, 2003, (i) neither the Company nor any of its
Subsidiaries nor, to the Company's knowledge, any director, officer, employee,
auditor, accountant or representative of the Company or any of its Subsidiaries
has received any written complaint, allegation, assertion, or claim that the
Company or any of its Subsidiaries has engaged in improper or illegal accounting
or auditing practices or maintains improper or inadequate internal accounting
controls and (ii) no attorney representing the Company or any of its
Subsidiaries, whether or not employed by the Company or any of its Subsidiaries,
has reported evidence of a material violation of U.S. federal or state
securities laws, a material breach of fiduciary duty or similar material
violation by the Company, any of its Subsidiaries or any of their respective
officers, director, employees or agents to any officer of the Company, the Board
of Directors of the Company or any member or committee thereof. For purposes of
this Agreement, "KNOWLEDGE" of any Person means the actual knowledge of any
officer (as such term is defined in Rule 16a-1(f) under the Exchange Act) of
such Person.

     Section 3.11  ABSENCE OF CERTAIN CHANGES. From the Company Balance Sheet
Date to the date hereof, the Company and its Subsidiaries have conducted their
business in the ordinary course of business, consistent with past practice, and
there has not been:

          (a) any event, occurrence, change or development of a state of
     circumstances or facts which, individually or in the aggregate, has had, or
     would be reasonably likely to have, a Company Material Adverse Effect;

          (b) any declaration, setting aside or payment of any dividend or other
     distribution with respect to any shares of capital stock of the Company
     (other than the Company's regular quarterly cash dividend and dividends or
     distributions by any direct or indirect wholly-owned Subsidiary to the
     Company or any wholly-owned Subsidiary of the Company, and except for
     dividends or distributions by other Subsidiaries of the Company for which
     the portion of such dividends or distributions not payable to a direct or
     indirect wholly-owned Subsidiary of the Company did not exceed $10,000,000
     in value in the aggregate for all such dividends and distributions), or any
     repurchase, redemption or other acquisition by the Company or any of its
     wholly-owned Subsidiaries of any outstanding shares of capital stock or
     other securities of, or other ownership interests in, the Company or any of
     its Significant Subsidiaries (other than (i) any such repurchases prior to
     the date hereof pursuant to the Company's publicly announced stock buyback
     program or, after the date hereof, as permitted under Section 5.1(e) or
     pursuant to the terms of Company Stock Options and Company Awards, in each
     case subject to Section 7.4), and (ii) any such transaction solely among
     the Company and its wholly-owned Subsidiaries or solely among the Company's
     wholly-owned Subsidiaries;

          (c) any amendment of any material term of any outstanding security of
     the Company or any of its Significant Subsidiaries (other than wholly-owned
     Subsidiaries);

          (d) to the knowledge of the Company's Management Committee, any
     transaction or commitment made, or any contract, agreement or settlement
     entered into, by (or judgment, order or decree affecting) the Company or
     any of its Subsidiaries relating to its assets or business (including the
     acquisition or disposition of any assets) or any relinquishment by the
     Company or any of its Subsidiaries of any contract or other


                                       18
<PAGE>


     right, in either case, material to the Company and its Subsidiaries taken
     as a whole, other than transactions, commitments, contracts, agreements or
     settlements (including without limitation settlements of litigation and tax
     proceedings) in the ordinary course of business consistent with past
     practice, those expressly permitted by this Agreement, or as agreed to in
     writing by Parent;

          (e) any change in any method of financial accounting or financial
     accounting practice (other than any change for tax purposes) by the Company
     or any of its Subsidiaries, except for any such change which is not
     material or which is required by reason of a concurrent change in GAAP or
     applicable law;

          (f) any (i) grant of any severance or termination pay to (or amendment
     to any such existing arrangement with) any director, officer or employee of
     the Company or any of its Subsidiaries, other than in accordance with
     existing plans and policies, (ii) entering into of any employment, deferred
     compensation or other similar agreement (or any amendment to any such
     existing agreement) with any director, officer or employee of the Company
     or any of its Subsidiaries, other than in accordance with existing plans
     and policies, (iii) increase in benefits payable under any existing
     severance or termination pay policies or employment agreements or (iv)
     increase in (or amendments to the terms of) compensation, bonus or other
     benefits payable to directors, officers or employees of the Company or any
     of its Subsidiaries, other than increases made in the ordinary course of
     business with respect to employees other than executives; or

          (g) any (i) Tax election made or changed, (ii) Tax audit settled, or
     (iii) amended Tax Return filed, in each case, that is reasonably likely to
     result in an increase to a Tax liability, which increase is material to the
     Company and its Subsidiaries, taken as a whole.

     Section 3.12  NO DEFAULT. Neither the Company nor any of its Subsidiaries
is in default or violation (and no event has occurred which, with notice or the
lapse of time or both, would constitute a default or violation) of any term,
condition or provision of (i) its certificate of incorporation, by-laws or the
comparable charter or organizational documents, (ii) any loan or credit
agreement, note, bond, mortgage, indenture, lease or other agreement,
instrument, permit, concession, franchise or license to which the Company or any
of its Subsidiaries is now a party or by which the Company or any of its
Subsidiaries or any of their respective properties or assets is bound or (iii)
any permit, license, order, writ, injunction, decree, statute, rule or
regulation applicable to the Company or any of its Subsidiaries, except in the
case of (ii) and (iii) for defaults or violations which in the aggregate would
not reasonably be expected to result in a Company Material Adverse Effect.

     Section 3.13  NO UNDISCLOSED MATERIAL LIABILITIES. As of the date hereof,
there are no material liabilities of the Company or any Subsidiary of the
Company of any kind whatsoever, whether accrued, contingent, absolute,
determined, determinable or otherwise, other than:

          (a) liabilities disclosed or provided for in the Company Balance Sheet
     or in the notes thereto;


                                       19
<PAGE>


          (b) liabilities incurred since the Company Balance Sheet Date in the
     ordinary course of business consistent with past practice and which,
     individually or in the aggregate, would not be reasonably likely to have a
     Company Material Adverse Effect;

          (c) liabilities disclosed in the Company Commission Documents filed
     prior to the date of this Agreement;

          (d) liabilities or obligations that have been discharged or paid in
     full in the ordinary course of business; and

          (e) liabilities under this Agreement.

     Section 3.14  LITIGATION. There is no action, suit, investigation or
proceeding pending against, or, to the knowledge of the Company, threatened
against or affecting, the Company or any of its Subsidiaries or any of their
respective properties or any of their respective officers or directors before
any court or arbitrator or any governmental body, agency or official except as
would not, individually or in the aggregate, be reasonably likely to have a
Company Material Adverse Effect.

     Section 3.15  TAXES. Except as set forth in the Company Balance Sheet
(including the notes thereto) and except as would not, individually or in the
aggregate, be reasonably likely to have a Company Material Adverse Effect, (i)
all Company Tax Returns required to be filed with any taxing authority by, or
with respect to, the Company and its Subsidiaries have been filed in accordance
with all applicable laws; (ii) the Company and its Subsidiaries have timely paid
all Taxes shown as due and payable on the Company Tax Returns that have been so
filed, and, as of the time of filing, the Company Tax Returns correctly
reflected the facts regarding the income, business, assets, operations,
activities and the status of the Company and its Subsidiaries (other than, in
the case of clause (i) or clause (ii) hereof, with respect to Taxes and Tax
Returns for which the position has been taken in good faith and for which
adequate reserves are reflected on the Company Balance Sheet, as adjusted for
operations in the ordinary course of business since the date of the Company
Balance Sheet); (iii) the Company and its Subsidiaries have made provision for
all Taxes payable by the Company and its Subsidiaries for which no Company Tax
Return has yet been filed; (iv) the charges, accruals and reserves for Taxes
with respect to the Company and its Subsidiaries reflected on the Company
Balance Sheet are adequate under GAAP to cover the Tax liabilities accruing
through the date thereof; (v) there is no action, suit, proceeding, audit or
claim now proposed or pending against or with respect to the Company or any of
its Subsidiaries in respect of any Tax where there is a reasonable possibility
of an adverse determination; (vi) to the best of the Company's knowledge and
belief, neither the Company nor any of its Subsidiaries is liable for any Tax
imposed on any entity other than such Person, except as the result of the
application of Treas. Reg. section 1.1502-6 (and any comparable provision of the
tax laws of any state, local or foreign jurisdiction) to the affiliated group of
which the Company or any of its Subsidiaries is or was the common parent; and
(vii) neither the Company nor any Company Subsidiary has constituted either a
"distributing corporation" or a "controlled corporation" (within the meaning of
Section 355(a)(1)(A) of the Code) in a distribution of stock qualifying or
intended to qualify for tax-free treatment under Section 355 of the Code in the
two years prior to the date of this Agreement. For purposes of this Agreement,
"TAXES" shall mean any and all taxes, charges, fees, levies or other
assessments, including, without limitation, all net


                                       20
<PAGE>


income, gross income, gross receipts, excise, stamp, real or personal property,
ad valorem, withholding, social security (or similar), unemployment, occupation,
use, production, service, service use, license, net worth, payroll, franchise,
severance, transfer, recording, employment, premium, windfall profits,
environmental (including taxes under Section 59A of the Code), customs duties,
capital stock, profits, disability, sales, registration, value added,
alternative or add-on minimum, estimated or other taxes, assessments or charges
imposed by any federal, state, local or foreign governmental entity and any
interest, penalties, or additions to tax attributable thereto. For purposes of
this Agreement, "TAX RETURNS" shall mean any return, report, form or similar
statement required to be filed with respect to any Tax (including any attached
schedules), including, without limitation, any information return, claim for
refund, amended return or declaration of estimated Tax.

     Section 3.16  EMPLOYEE BENEFIT PLANS; EMPLOYMENT.

     (a) The Company has provided Parent with a list (set forth in Section
3.16(a) of the Company Disclosure Schedules) identifying each material "employee
benefit plan", as defined in section 3(3) of the Employee Retirement Income
Security Act of 1974, as amended ("ERISA"), each material employment,
consulting, severance, change in control or similar contract, plan, funding
arrangement or policy applicable to any director, former director, employee or
former employee of the Company or any Company Subsidiary, and each material
plan, funding vehicle or arrangement (written or oral), providing for
compensation, bonuses, profit-sharing, stock option or other stock-related
rights or other forms of incentive or deferred compensation, vacation benefits,
insurance coverage (including any self-insured arrangements), health or medical
benefits, death benefits, disability benefits, workers' compensation,
supplemental unemployment benefits, severance benefits, change in control
benefits and post-employment or retirement benefits (including compensation,
pension, health, medical or life insurance benefits) which is maintained,
administered or contributed to by the Company or its subsidiaries) and covers
any employee or director or former employee or director of the Company or any of
its Subsidiaries; PROVIDED, HOWEVER, that such list need not include any Company
Benefit Plan that constitutes a Foreign Company Benefit Plan (as defined below).
The material plans, agreements or arrangements of the Company and its
Subsidiaries referred to in the first sentence of this paragraph (a) (excluding
any such plan that is a "multiemployer plan," as defined in section 3(37) of
ERISA, but including Foreign Company Benefit Plans) are referred to collectively
herein as the "COMPANY BENEFIT PLANS." "FOREIGN COMPANY BENEFIT PLAN" means any
Company Benefit Plan primarily maintained for the benefit of employees and
former employees in jurisdictions other than the United States. To the extent
practicable, the Company shall provide and deliver to Parent a list of Foreign
Company Benefit Plans as soon as practicable following the date hereof.

     (b) The Company has made available to Parent true, complete and correct
copies of (i) each Company Benefit Plan (or, in the case of any unwritten
Company Benefit Plan, a description thereof) and any amendments thereto, (ii)
the most recent annual report on Form 5500 and Schedule B thereto (including any
related actuarial valuation report) filed with the Internal Revenue Service with
respect to each Company Benefit Plan (if any such report was required), and
(iii) the most recent summary plan description for each Company Benefit Plan for
which such summary plan description is required.


                                       21
<PAGE>


     (c) Each Company Benefit Plan has been established and maintained in
material compliance with its terms and with the requirements prescribed by any
and all statutes, orders, rules and regulations (including, but not limited to,
the extent applicable, ERISA and the Code) which are applicable to such Plan.

     (d) (i) Neither the Company nor any other entity which is a member of a
controlled group of entities (within the meaning of Sections 414(b), (c), (m) or
(o) of the Code) of which the Company is a member (each, an "ERISA AFFILIATE")
has incurred a material liability under Title IV of ERISA or Section 412 of the
Code that has not been satisfied in full, and no reasonably foreseeable
condition exists that presents a material risk to the Company or any ERISA
Affiliate of incurring any such liability; and (ii) all material insurance
premiums with respect to Company Benefit Plans, including premiums to the
Pension Benefit Guaranty Corporation, have been paid when due.

     (e) All "employee pension benefit plans" (as defined in Section 3(2) of
ERISA) that are Company Benefit Plans ("COMPANY PENSION PLAN") intended to be
qualified under Section 401(a) of the Code have been the subject of "GUST II"
determination letters from the Internal Revenue Service to the effect that such
Company Pension Plans are qualified and exempt from Federal income taxes under
Sections 401(a) and 501(a), respectively, of the Code. No Company Benefit Plan
is a "multiemployer plan," as defined in Section 3(37) of ERISA.

     (f) Other than (i) any provision that delays the effective date of such
amendment or termination or (ii) any benefit under a Company Benefit Plan
disclosed on Section 3.16(g) of the Company Disclosure Schedules that arises
solely as a result of the transactions contemplated by this Agreement or (iii)
any employment agreement to which the Company or any of its Subsidiaries is a
party, each Company Benefit Plan that is an "employee welfare benefit plan" (as
defined in Section 3(1) of ERISA) (including any such plan covering retirees or
other former employees) may be freely amended or terminated by the Company, any
ERISA Affiliate or any successor thereto on or at any time after the Effective
Time.

     (g) Set forth on Section 3.16(g) of the Company Disclosure Schedules is,
based on the assumptions set forth therein, (i) a good faith estimate of a
reasonable amount subject to Section 280G of the Code, including any tax
gross-up, that could be paid to each of the 65 most-highly compensated employees
of the Company and its Subsidiaries under all employment, severance and
termination agreements, other compensation arrangements and Company Benefit
Plans currently in effect as a result of the transactions contemplated by this
Agreement, and (ii) the estimated cost to the Company and its Subsidiaries of
making such payments, including any tax gross-ups with respect to such
employees.

     (h) The consummation of the transactions contemplated by this Agreement
will not, either alone or in combination with another event, (A) entitle any
current or former employee, consultant or officer of the Company or any its
Subsidiaries to severance pay, unemployment compensation or any other payment,
except as expressly provided in this Agreement or as required by applicable Law,
or (B) accelerate the time of payment or vesting, increase the amount of
compensation due any such employee, consultant or officer or trigger any other
material obligation pursuant to any Company Benefit Plan, except as expressly
provided in this Agreement. Section 3.16 of the Company Disclosure Schedules
lists all the agreements,


                                       22
<PAGE>


arrangements and other instruments which give rise to an obligation to make or
set aside amounts payable to or on behalf of the officers of the Company and its
Subsidiaries as a result of the transactions contemplated by this Agreement
and/or any subsequent employment termination, true and complete copies of which
have been previously provided to Parent.

     (i) There has been no amendment to, written interpretation or announcement
(whether or not written) by the Company or any of its Subsidiaries relating to,
or change in, employee participation or coverage under, or any adoption of, any
Company Benefit Plan (other than a Foreign Company Benefit Plan) which would
increase materially the expense of maintaining such Company Benefit Plan above
the level of expense incurred in respect thereof for the 12 months ended on the
Company Balance Sheet Date.

     (j) Except as would not, individually or in the aggregate, be reasonably
likely to have a Company Material Adverse Effect, the Company and its
Subsidiaries are in material compliance with all collective bargaining
agreements and all applicable federal, state and local laws, rules and
regulations respecting employment, employment practices, labor, occupational
safety and health, and wages and hours, including Section 8 of the National
Labor Relations Act and all civil rights and anti-discrimination laws, rules and
regulations (collectively, "ANTI-DISCRIMINATION LAWS"). Except as would not,
individually or in the aggregate, be reasonably likely to have a Company
Material Adverse Effect, no work stoppage, slowdown or labor strike against the
Company or any of its Subsidiaries is pending or threatened, nor is the Company
or any of its Subsidiaries involved in or threatened with material labor
disputes, grievances or litigation relating to labor matters, including with
respect to Anti-Discrimination Laws.

     (k) No Company Benefit Plan provides a gross-up for any Taxes which may be
imposed for failure to comply with the requirements of section 409A of the Code.

     Section 3.17  COMPLIANCE WITH LAWS. To the Company's knowledge, neither the
Company nor any of its Subsidiaries is in violation of, or, since January 1,
2002, has violated, any applicable provisions of any laws, statutes, ordinances
or regulations except for any violations that, individually or in the aggregate,
would not be reasonably likely to have a Company Material Adverse Effect.

     Section 3.18  CERTAIN BUSINESS PRACTICES. To the knowledge of the Company's
Management Committee, since January 1, 2002, neither the Company nor any of its
Subsidiaries nor any director, officer, employee or agent of the Company or any
of its Subsidiaries has (a) used any funds for unlawful contributions, gifts,
entertainment, or other unlawful expenses relating to political activity or (b)
made any unlawful payment to any government official or employee or to any
political party or campaign or violated any provision of the Foreign Corrupt
Practices Act of 1977, as amended.

     Section 3.19  ENVIRONMENTAL MATTERS.

     (a) Except as set forth in the Company Commission Documents filed prior to
the date hereof and with such exceptions as, individually or in the aggregate,
would not be reasonably likely to have a Company Material Adverse Effect, (i) no
notice, notification, demand, request for information, citation, summons,
complaint or order has been received by, and no


                                       23
<PAGE>


investigation, action, claim, suit, proceeding or review is pending or, to the
knowledge of the Company, threatened by any Person against the Company or any of
its Subsidiaries, and no penalty has been assessed against the Company or any of
its Subsidiaries, in each case, with respect to any matters arising out of any
Environmental Law; (ii) the Company and its Subsidiaries are in compliance with
all Environmental Laws; (iii) there are no liabilities of the Company or any of
its Subsidiaries arising out of any Environmental Law, whether accrued,
contingent, absolute, or determined, and, to the knowledge of the Company, there
is no existing condition, situation or set of circumstances which would
reasonably be expected to result in such a liability; and (iv) there has been no
material environmental investigation, study, audit, test, review or other
analysis conducted since January 1, 2005 of which the Company has knowledge in
relation to any current or prior business of the Company or any of its
Subsidiaries or any property or facility now or previously owned, leased or
operated by the Company or any of its Subsidiaries which has not been delivered
to Parent prior to the date hereof.

     (b) For purposes of this Section 3.19, the term "ENVIRONMENTAL LAWS" means
federal, state, local and foreign statutes, laws (including, without limitation,
common law), judicial decisions, regulations, ordinances, rules, judgments,
orders, codes, injunctions, permits, governmental agreements or governmental
restrictions relating to relating to: (A) the protection, investigation or
restoration of the environment or natural resources, (B) the handling, use,
presence, disposal, Release or threatened Release of any Hazardous Substance or
(C) noise, odor, indoor air, employee exposure, electromagnetic fields,
wetlands, pollution, contamination or any injury or threat of injury to persons
or property relating to any Hazardous Substance. As used herein, the term
"HAZARDOUS SUBSTANCE" means any "hazardous substance" and any "pollutant or
contaminant" as those terms are defined in the Comprehensive Environmental
Response, Compensation, and Liability Act of 1980, as amended ("CERCLA"); any
"hazardous waste" as that term is defined in the Resource Conservation and
Recovery Act ("RCRA"); and any "hazardous material" as that term is defined in
the Hazardous Materials Transportation Act (49 U.S.C. ss. 1801 ET SEQ.), as
amended (including as those terms are further defined, construed, or otherwise
used in rules, regulations, standards, orders, guidelines, directives, and
publications issued pursuant to, or otherwise in implementation of, said Laws);
and including, without limitation, any petroleum product or byproduct, solvent,
flammable or explosive material, radioactive material, asbestos, lead paint,
polychlorinated biphenyls (or PCBs), dioxins, dibenzofurans, heavy metals, radon
gas, mold, mold spores, and mycotoxins. As used herein, the term "RELEASE" means
any spilling, leaking, pumping, pouring, emitting, emptying, discharging,
injecting, escaping, leaching, dumping, placing, discarding, abandonment, or
disposing into the environment (including the placing, discarding or abandonment
of any barrel, container or other receptacle containing any Hazardous Substance
or other material).

     Section 3.20  TITLE TO PROPERTIES. Except in each case as would not
reasonably be expected to have, individually or in the aggregate, a Company
Material Adverse Effect, each of the Company and each of its Subsidiaries has
good title to, or valid leasehold or other ownership interests or rights in, all
its material properties and assets except: (i) for such interest or rights as
are no longer used or useful in the conduct of its businesses or as have been
disposed of in the ordinary course of business, and (ii) for defects in title,
easements, restrictive covenants and similar encumbrances or impediments that,
in the aggregate, do not and will not interfere with its ability to conduct its
business as currently conducted. As of the date of this Agreement, none of the
properties and assets of the Company or any of its Subsidiaries are subject to
any Liens that,


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<PAGE>


in the aggregate, interfere with the ability of the Company and the Company
Subsidiaries to conduct business as currently conducted to an extent that have
had or would reasonably be expected to have a Company Material Adverse Effect.

     Section 3.21  HYDROCARBON CONTRACTS.

     (a) Except in each case as would not reasonably be expected to have,
individually or in the aggregate, a Company Material Adverse Effect; (i) the
Hydrocarbon Contracts are in full force and effect in accordance with their
respective terms; (ii) all royalties, rentals and other payments due thereunder
have been properly and timely paid; (iii) there are currently pending no written
requests or demands for payments, adjustments of payments or performance
pursuant thereto; (iv) none of the Company or any of its Subsidiaries is in
breach of any of its obligations under any Hydrocarbon Contracts; and (v) to the
knowledge of the Company, no other party to any Hydrocarbon Contract is in
breach of any of its obligations thereunder. The term "HYDROCARBON CONTRACT"
means a material Hydrocarbon production sharing contract, lease or license,
permit or other similar agreement or right permitting the Company or any of its
Subsidiaries to explore for, develop, use, produce, sever, process, operate and
occupy Hydrocarbon interests and associated fixtures or structures for a
specified period of time. The term "HYDROCARBON CONTRACT" also includes any
farm-out or farm-in agreement, operating agreement, unit agreement, pooling or
communitization agreement, declaration or order, joint venture, option or
acquisition agreement, any oil and gas production, sales, marketing,
transportation, exchange and processing contract and agreement, or any other
contract affecting the ownership or operation of properties held for exploration
or production of Hydrocarbons, or the disposition of the Hydrocarbons produced
therefrom, in each case to which the Company or any of its Subsidiaries is a
party. The term "HYDROCARBONS" means any of oil, bitumen and products derived
therefrom, synthetic crude oil, petroleum, natural gas, natural gas liquids,
coal bed methane, and any and all other substances produced in association with
any of the foregoing, whether liquid, solid or gaseous.

     (b) Except in each case as would not reasonably be expected to have,
individually or in the aggregate, a Company Material Adverse Effect, (i) the
Company and its Subsidiaries have filed with the applicable government
authorities all applications and obtained all licenses, permits and other
authorizations required for operations under the Hydrocarbon Contracts, and (ii)
the Company and its Subsidiaries have complied with all rules and regulations of
any applicable government authority with respect to operations under the
Hydrocarbon Contracts.

     Section 3.22 MATERIAL CONTRACTS. Except for this Agreement and except as
set forth in the Company Commission Documents, as of the date hereof, neither
the Company nor any of its Subsidiaries is a party to or bound by any "material
contract" (as such term is defined in item 601(b)(10) of Regulation S-K of the
Commission) (all contracts of the type described in this Section 3.22 being
referred to herein as "COMPANY MATERIAL CONTRACTS").

     Section 3.23  INTELLECTUAL PROPERTY.

     (a) Except as would not reasonably be expected to have, individually or in
the aggregate, a Company Material Adverse Effect, (i) the Company and its
Subsidiaries possess the valid right to use, license and enforce all patents,
trademarks, trade names, service marks,


                                       25
<PAGE>


Internet domain names, copyrights, applications for any of the foregoing,
computer software programs or applications, geophysical data, trade secrets,
know-how, data and other proprietary rights (collectively, "INTELLECTUAL
PROPERTY") that are used in the conduct of the business of the Company and its
Subsidiaries as currently conducted (collectively, the "COMPANY INTELLECTUAL
PROPERTY"); (ii) to the knowledge of the Company, the conduct of the business of
the Company and its Subsidiaries and use of the Company Intellectual Property
does not infringe upon or otherwise violate any Intellectual Property rights of
any other Person; (iii) to the knowledge of the Company, no third party is
challenging, infringing or otherwise violating any right of the Company and its
Subsidiaries in the Company Intellectual Property; (iv) neither the Company nor
any of its Subsidiaries has received written notice of any pending claim, order
or proceeding with respect to any alleged or potential infringement or other
violation of Intellectual Property rights of any other Person or with respect to
any Company Intellectual Property; and (v) to the knowledge of the Company, no
Company Intellectual Property is being used or enforced by the Company or any of
its Subsidiaries in a manner that would reasonably be expected to result in the
abandonment, cancellation or unenforceability of any Company Intellectual
Property; PROVIDED, HOWEVER, that for purposes of this Section 3.23 only,
Company Intellectual Property shall not include RFG Patents. For purposes of
this Agreement, the term "RFG PATENTS" shall mean United States Patent Nos.
5,288,393; 5,593,567; 5,653,866; 5,837,126 and 6,030,521 and any reissues,
divisionals, reexaminations, continuations or continuations-in-part or foreign
counterparts of such United States Patents.

     (b) As of the date hereof, the Company and its Subsidiaries have not
entered into any contractual arrangement that would limit Parent's or the
Company's or their respective Subsidiaries' freedom to license, cross-license or
otherwise dispose of the RFG Patents, except for the nine (9) licensing
agreements the Company or its Subsidiaries have heretofore entered into with
motor gasoline refiners, blenders and importers under the RFG Patents, as
identified in the Company 10-K.

     Section 3.24  CONFIDENTIALITY AND OTHER AGREEMENTS.

     (a) None of the confidentiality agreements or standstill agreements the
Company has entered into with any third party (or any agent thereof) that is in
effect on the date hereof contains any exclusivity or standstill provisions that
are or will be binding on the Company, any of its Subsidiaries or, after the
Effective Time, Parent or any of its Subsidiaries.

     (b) Neither the Company nor any of its Subsidiaries is a party to any
agreement that would expressly and materially limit the ability of Parent or any
Subsidiary of Parent, after the Effective Time, to compete in or conduct any
line of business or compete with any Person or in any geographic area or during
any period of time.

     Section 3.25 BROKERS; FINANCIAL ADVISORS. No broker, investment banker,
financial advisor or other Person, other than Morgan Stanley (the "FINANCIAL
ADVISOR") (the terms of the engagement having been heretofore provided to
Parent), and the fees and expenses of which will be paid by the Company, is
entitled to any broker's, finder's, financial advisor's or other similar fee or
commission in connection with the Merger as a result of being engaged by the
Company or any Subsidiary or affiliate of the Company.


                                       26
<PAGE>


     Section 3.26 OPINION OF FINANCIAL ADVISOR. The Company has received the
opinion of the Financial Advisor, dated the date of this Agreement, to the
effect that, as of such date, the consideration to be received in the Merger by
the holders of the shares of Company Common Stock is fair to the Company's
stockholders from a financial point of view.

     Section 3.27 TAKEOVER STATUTES. The Board of Directors of the Company has
taken the necessary action to render section 203 of the DGCL, any other
potentially applicable antitakeover or similar statute or regulation and the
provisions of Article SEVENTH of the Company Charter inapplicable to this
Agreement and the transactions contemplated hereby.

     Section 3.28 STOCKHOLDER RIGHTS PLAN. The Board of Directors of the Company
has resolved to, and the Company promptly after execution of this Agreement
will, take all action necessary to render the rights issued pursuant to the
terms of the Company Rights Agreement inapplicable to the Merger and this
Agreement and the other transactions contemplated hereby.

                                   ARTICLE IV

         REPRESENTATIONS AND WARRANTIES OF PARENT AND MERGER SUBSIDIARY

     Parent and Merger Subsidiary represent and warrant to the Company that,
except as disclosed in the Parent Commission Documents (as hereinafter defined)
filed or furnished prior to the date hereof or in the correspondingly numbered
section of the disclosure schedules delivered by Parent to the Company
simultaneously with the execution of this Agreement (the "PARENT DISCLOSURE
SCHEDULES") (it being agreed that disclosure of any item in any section of the
Parent Disclosure Schedules shall be deemed disclosure with respect to any other
section of this Agreement to which the relevance of such item is reasonably
apparent):

     Section 4.1 CORPORATE EXISTENCE AND POWER. Each of Parent and Merger
Subsidiary is a corporation duly incorporated, validly existing and in good
standing under the laws of the State of Delaware and has all corporate powers
and all governmental licenses, authorizations, consents and approvals required
to carry on its business as now conducted, except for those the absence of which
would not, individually or in the aggregate be reasonably likely to have a
Parent Material Adverse Effect. Parent is duly qualified to do business as a
foreign corporation and is in good standing in each jurisdiction where the
character of the property owned or leased by it or the nature of its activities
makes such qualification necessary, except for those jurisdictions where the
failure to be so qualified would not, individually or in the aggregate, be
reasonably likely to have a Parent Material Adverse Effect. For purposes of this
Agreement, the term "PARENT MATERIAL ADVERSE EFFECT" means a material adverse
effect on the financial condition, business, liabilities, assets or continuing
results of operations of Parent and its Subsidiaries, taken as a whole, except
to the extent resulting from (x) any changes in general United States or global
economic conditions, or (y) any changes affecting the oil and gas industry in
general (including changes to commodity prices). Since the date of its
incorporation, Merger Subsidiary has not engaged in any activities other than in
connection with or as contemplated by this Agreement. Parent has heretofore
delivered to the Company true and complete copies of Parent's and Merger
Subsidiary's certificate of incorporation and by-laws as currently in effect.


                                       27
<PAGE>


     Section 4.2  CORPORATE AUTHORIZATION.

     (a) The execution, delivery and performance by Parent and Merger Subsidiary
of this Agreement and the consummation by Parent and Merger Subsidiary of the
transactions contemplated hereby are within the corporate powers of Parent and
Merger Subsidiary and have been duly authorized by all necessary corporate
action. Assuming due authorization, execution and delivery of this Agreement by
the Company, this Agreement constitutes a valid and binding agreement of each of
Parent and Merger Subsidiary, enforceable against such party in accordance with
its terms, subject to bankruptcy, insolvency, fraudulent transfer,
reorganization, moratorium and similar laws of general applicability relating to
or affecting creditors' rights and to general equity principles. The shares of
Parent Common Stock issued pursuant to the Merger, when issued in accordance
with the terms hereof, will be duly authorized, validly issued, fully paid and
nonassessable and not subject to preemptive rights.

     (b) Parent's Board of Directors, at a meeting duly called and held on or
prior to the date hereof, has (i) determined that the transactions contemplated
hereby (including the Merger) are fair to and in the best interests of Parent's
stockholders and (ii) approved the execution of this Agreement and the
transactions contemplated hereby (including the Merger).

     Section 4.3 GOVERNMENTAL AUTHORIZATION. The execution, delivery and
performance by Parent and Merger Subsidiary of this Agreement and the
consummation by Parent and Merger Subsidiary of the transactions contemplated
hereby require no action by or in respect of, or filing with, any governmental
body, agency, official or authority other than (a) the filing of a certificate
of merger in accordance with the DGCL, (b) compliance with any applicable
requirements of the HSR Act, (c) compliance with any applicable requirements of
the EC Merger Regulation, (d) compliance with any applicable requirements of
laws, rules and regulations in other foreign jurisdictions governing antitrust
or merger control matters, (e) compliance with any applicable requirements of
the Exchange Act, (f) compliance with any applicable requirements of the
Securities Act, (g) the appropriate filings and approvals under the rules of the
NYSE and (h) other actions or filings which if not taken or made would not,
individually or in the aggregate, be reasonably likely to have a Parent Material
Adverse Effect or prevent or materially delay Parent's and Merger Subsidiary's
consummation of the Merger.

     Section 4.4 NON-CONTRAVENTION. The execution, delivery and performance by
Parent and Merger Subsidiary of this Agreement and the consummation by Parent
and Merger Subsidiary of the transactions contemplated hereby do not and will
not,