NALCO CHEMICAL CO
PREM14A, 1999-11-12
MISCELLANEOUS CHEMICAL PRODUCTS
Previous: MYERS INDUSTRIES INC, 10-Q, 1999-11-12
Next: NARRAGANSETT ELECTRIC CO, 10-Q, 1999-11-12






                       SECURITIES AND EXCHANGE COMMISSION
                            SCHEDULE 14A INFORMATION

                           Proxy Statement Pursuant to
              Section 14(a) of the Securities Exchange Act of 1934

Filed by the Registrant  [ ]

Filed by a Party other than the Registrant  [ ]

Check the appropriate box:

          [X]  Preliminary Proxy Statement

          [X]  Confidential,  For Use of the  Commission  Only (as  permitted by
               Rule 14a-6(e)(2))

          [ ]  Definitive Proxy Statement

          [ ]  Definitive Additional Materials

          [ ]  Soliciting Material Pursuant to Rule 14a-11(c) or Rule 14a-12

                             Nalco Chemical Company

                (Name of Registrant as Specified in Its Charter)

    (Name of Person(s) Filing Proxy Statement, if Other Than the Registrant)

Payment of Filing Fee (Check the appropriate box):

          [ ]  No fee required

          [ ]  Fee  computed on  table below per Exchange Act Rules  14a-6(i)(1)
               and 0-11.

          (1)  Title of each class of securities to which transaction applies:

- --------------------------------------------------------------------------------

          (2)  Aggregate number of securities to which transaction applies:

- --------------------------------------------------------------------------------

          (3)  Per unit price or other underlying value of transaction  computed
pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee
is calculated and state how it was determined):

- --------------------------------------------------------------------------------

          (4)  Proposed maximum aggregate value of transaction:

- --------------------------------------------------------------------------------

          (5)  Total fee paid:

- --------------------------------------------------------------------------------

          [ ]  Fee paid previously with preliminary materials:

- --------------------------------------------------------------------------------

          [X] Check box if any part of the fee is offset as provided by Exchange
Act Rule  0-11(a)(2)  and identify the filing for which the  offsetting  fee was
paid previously.  Identify the previous filing by registration statement number,
or the form or schedule and the date of its filing.

          (1) Amount previously paid:  $818,208.02

- --------------------------------------------------------------------------------

          (2) Form, Schedule or Registration Statement no.: Schedule 14D-1

- --------------------------------------------------------------------------------

          (3) Filing Party:  Suez Lyonnaise des Eaux
                             H2O Acquisition Co.

- --------------------------------------------------------------------------------

         (4)  Date Filed:    July 1, 1999

- --------------------------------------------------------------------------------




                               [NALCO LETTERHEAD]

                                                               November __, 1999

Dear Stockholder:

         You are cordially  invited to attend a Special  Meeting of Stockholders
of Nalco  Chemical  Company (the "Special  Meeting") to be held at 10:00 a.m. on
[day],  [date],  1999,  at the  offices of White & Case LLP,  1155 Avenue of the
Americas, New York, New York 10036.

         As described in the enclosed Proxy  Statement,  at the Special  Meeting
you will be asked to  consider  and vote upon a proposal to approve and adopt an
Agreement and Plan of Merger dated as of June 27, 1999 (the "Merger Agreement"),
among Suez  Lyonnaise des Eaux, a societe  anonyme  organized and existing under
the laws of the  Republic of France  ("Suez  Lyonnaise"),  H2O  Acquisition  Co.
("H2O"), a Delaware corporation and an indirect, wholly owned subsidiary of Suez
Lyonnaise,  and Nalco Chemical Company, a Delaware corporation ("Nalco", "we" or
"us"),  providing for, among other things, the merger of H2O with and into Nalco
(the  "Merger").  Following  the Merger,  Nalco will  continue as the  surviving
corporation  and will  become  an  indirect,  wholly  owned  subsidiary  of Suez
Lyonnaise. A copy of the Merger Agreement is attached to this Proxy Statement as
Exhibit A.

     The Merger will  constitute the second and final step of the acquisition of
Nalco  by Suez  Lyonnaise.  The  first  step was a tender  offer  (the  "Offer")
commenced by H2O on July 1, 1999 for all of the outstanding shares of our common
stock,  par value $0.1875 per share,  including the associated  preferred  stock
purchase rights (the "Common Stock"), and our Series B ESOP Preferred Stock (the
"ESOP  Preferred  Stock",  and such  shares of Common  Stock and ESOP  Preferred
Stock,  collectively,  the  "Shares")  at a price of $53.00  per share of Common
Stock and  $1,060.00  per share of ESOP  Preferred  Stock,  net to the seller in
cash, without interest thereon (the "Offer Price"). Pursuant to the Offer, which
expired on November 8, 1999,  H2O accepted for payment  [66,195,851.711]  shares
(including 907,700 shares tendered pursuant to notices of guaranteed delivery of
Common  Stock (or  approximately  [96.8]% of the Common Stock  outstanding)  and
[346,606.379]  shares of ESOP Preferred  Stock (or  approximately  [100]% of the
ESOP Preferred  Stock  outstanding).  On a fully diluted basis,  this represents
approximately  [97.1]%  of all  Shares  outstanding  on  November  8,  1999  and
approximately  [97.1]% of all Shares  outstanding  on November  [__],  1999, the
record date for the Special Meeting (the "Record Date").  In accordance with the
Merger  Agreement,  Suez Lyonnaise  intends to cause H2O to vote in favor of the
Merger and to merge with and into Nalco, and all Shares (other than Shares owned
by Suez Lyonnaise, H2O or any other subsidiary of Suez Lyonnaise, or Shares held
by Nalco  as  treasury  stock,  or by  stockholders,  if any,  of Nalco  who are
entitled  to and who  properly  exercise  appraisal  rights  under the  Delaware
General  Corporation  law)  will be  converted  into the  right to  receive  the
respective Offer Price.

         On June 27, 1999,  our Board of Directors  unanimously  (i)  determined
that the Merger is advisable and that the Merger  Agreement and the transactions
contemplated thereby, including the Offer and the Merger, are fair to and in the
best  interests  of our  stockholders,  (ii)  approved  and  adopted  the Merger
Agreement and the transactions  contemplated thereby, (iii) recommended that our
stockholders  accept the Offer,  approve the  Merger,  and approve and adopt the
Merger Agreement and the transactions contemplated thereby, and (iv) approved an
amendment to the  Stockholders  Rights  Agreement  dated as of November 1, 1995,
between the  Company  and First  Chicago  Trust  Company of New York,  as Rights
Agent, as amended from time to time,  rendering it inapplicable to the Offer and
the Merger.

     H2O OWNS AN AGGREGATE OF [73,127,979.291] SHARES, REPRESENTING,  ON A FULLY
DILUTED  BASIS,  APPROXIMATELY  [97.1]% OF ALL SHARES  OUTSTANDING ON THE RECORD
DATE.  BECAUSE THE  APPROVAL  OF THE  HOLDERS OF A MAJORITY  OF ALL  OUTSTANDING
SHARES IS  SUFFICIENT  TO APPROVE  THE MERGER AND  APPROVE  AND ADOPT THE MERGER
AGREEMENT, H2O CAN CAUSE THE MERGER TO OCCUR WITHOUT THE AFFIRMATIVE VOTE OF ANY
OTHER  HOLDER OF SHARES.  SUEZ  LYONNAISE  AND H2O HAVE  AGREED  PURSUANT TO THE
MERGER  AGREEMENT  TO VOTE ALL THEIR SHARES IN FAVOR OF APPROVAL AND ADOPTION OF
THE MERGER AGREEMENT AND THE MERGER.

         If the  Merger is  consummated,  holders  of Shares  who do not vote in
favor of approval  and  adoption  of the Merger  Agreement  and  approval of the
Merger and who  otherwise  comply  with the  requirements  of Section 262 of the
Delaware  General  Corporation  Law (a copy of which is included as Exhibit B to
the enclosed Proxy Statement) will be entitled to receive such  consideration as
may be determined to be due under such provisions.  Only holders of our stock of
record at the close of business on November 11, 1999,  are entitled to notice of
and to vote at the Special Meeting or any adjournments or postponements thereof.

         You are urged to read this Proxy  Statement,  which describes the terms
of the Merger,  in its entirety.  A copy of the Merger  Agreement is included as
Appendix A to the enclosed Proxy Statement.

         It is very  important  that your shares be  represented  at the Special
Meeting.  Whether  or not you  plan  to  attend  the  Special  Meeting,  you are
requested  to  complete,  date,  sign and return the proxy card in the  enclosed
postage-paid envelope.  Failure to return a properly executed proxy card or vote
at the Special  Meeting  would have the same effect as a vote against the Merger
Agreement  and the  Merger.  Executed  proxies  with no  instructions  indicated
thereon will be voted "FOR"  approval and adoption of the Merger  Agreement  and
approval of the Merger.

         Please do not send in your stock certificates at this time. You will be
sent a letter of transmittal for that purpose as soon as reasonably  practicable
after the Merger is consummated.

                                                     Sincerely,


                                                     ---------------------
                                                     Edward J. Mooney
                                                     Chairman and CEO



<PAGE>


                               [NALCO LETTERHEAD]

                    NOTICE OF SPECIAL MEETING OF STOCKHOLDERS

To the Stockholders of Nalco Chemical Company:

         NOTICE IS HEREBY GIVEN that a Special  Meeting of Stockholders of Nalco
Chemical Company (the "Special Meeting") will be held on [__], [_____], 1999, at
10:00 a.m., at the offices of White & Case LLP, 1155 Avenue of the Americas, New
York, New York, 10036, for the following purposes:

                  1. To  consider  and vote upon a proposal to approve and adopt
         the  Agreement  and Plan of Merger  dated as of June 27,  1999,  by and
         among us, Suez  Lyonnaise  des Eaux, a societe  anonyme  organized  and
         existing  under the laws of the Republic of France ("Suez  Lyonnaise"),
         and H2O Acquisition Co.  ("H2O"),  a Delaware  corporation and a wholly
         owned subsidiary of Suez Lyonnaise (the "Merger  Agreement"),  attached
         as  Exhibit  A to the  accompanying  Proxy  Statement,  and the  Merger
         contemplated thereby.  Under the terms of the Merger Agreement,  at the
         Effective  Time (as  defined  in the  Merger  Agreement),  among  other
         things,  (i) H2O will be merged with and into us (the  "Merger"),  (ii)
         each outstanding share of our common stock, par value $0.1875 per share
         (the "Common Stock"), including the associated preferred stock purchase
         rights issued  pursuant to the Rights  Agreement,  dated as of June 20,
         1996,  as amended,  between us and First  Chicago  Trust Company of New
         York as Rights Agent (the "Rights")  (other than shares of Common Stock
         held  by any of our  subsidiaries,  held  in  treasury,  held  by  Suez
         Lyonnaise des Eaux, H2O Acquisition Co. or any other subsidiary of Suez
         Lyonnaise and other than dissenting shares), will be converted into the
         right to  receive an amount in cash  equal to $53.00  without  interest
         thereon,  (iii) each outstanding share of our Series B ESOP Convertible
         Preferred Stock, par value $1.00 per share (the "ESOP Preferred Stock",
         and together with the Common Stock and the Rights, the "Shares") (other
         than shares of ESOP Preferred Stock held by any of our subsidiaries, in
         treasury,  or by Suez  Lyonnaise des Eaux, H2O  Acquisition  Co. or any
         other subsidiary of Suez  Lyonnaise),  will be converted into the right
         to  receive  an  amount in cash  equal to  $1,060.00  without  interest
         thereon,  and (iv) each Share issued and  outstanding and owned by Suez
         Lyonnaise,  H2O or any other subsidiary of Suez Lyonnaise will cease to
         be  outstanding,  will be canceled and retired  without  payment of any
         consideration therefore and will cease to exist; and

                  2. To act upon such other and further business as may properly
         come  before the Special  Meeting or any  adjournment  or  adjournments
         thereof.

          The Board of Directors has  specified  November 19, 1999, at the close
of business,  as the record date for the purpose of determining the stockholders
who are entitled to receive notice of and to vote at the Special  Meeting.  Only
holders of Common  Stock of record at the close of business on that date will be
entitled to notice of and to vote at the Special Meeting or any  adjournments or
postponements thereof.

         The accompanying  Proxy Statement  describes the Merger Agreement,  the
proposed  Merger and the actions to be taken in connection  with the Merger.  To
ensure  that your  vote  will be  counted,  please  complete,  date and sign the
enclosed  proxy  card  and  return  it  promptly  in the  enclosed  postage-paid
envelope,  whether  or not you plan to  attend  the  Special  Meeting.  Executed
proxies with no instructions  indicated thereon will be voted "FOR" approval and
adoption of the Merger Agreement and approval of the Merger. You may revoke your
proxy in the manner  described in the  accompanying  Proxy Statement at any time
before it is voted at the Special Meeting.

     Pursuant to a tender offer, H2O owns an aggregate of 66,195,851.711  shares
of Common Stock,  representing  96.8% of such shares,  and 346,606.379 shares of
ESOP Preferred Stock,  representing 100% of such shares. Because the approval of
the holders of a majority of all outstanding Shares is sufficient to approve the
Merger and approve and adopt the Merger  Agreement,  H2O can cause the Merger to
occur  without  the  affirmative  vote of any  other  holders  of  Shares.  Suez
Lyonnaise and H2O have agreed pursuant to the Merger Agreement to vote all their
Shares in favor of approval and adoption of the Merger Agreement and approval of
the Merger.

         If the  Merger is  consummated,  holders  of Shares  who do not vote in
favor of approval  of the Merger  Agreement  and  approval of the Merger and who
otherwise  comply with the  requirements of Section 262 of the Delaware  General
Corporation  Law (a copy of which is included as Exhibit B to the enclosed Proxy
Statement) will be entitled to receive such  consideration  as may be determined
to be due under such provisions.

                              By Order of the Board of Directors



                              Suzzanne Gioimo, Secretary
Naperville, Illinois
November __, 1999

THE BOARD OF  DIRECTORS  UNANIMOUSLY  RECOMMENDS  THAT  STOCKHOLDERS  VOTE "FOR"
APPROVAL AND ADOPTION OF THE MERGER AGREEMENT AND THE MERGER.

THE  AFFIRMATIVE  VOTE OF A MAJORITY OF THE  OUTSTANDING  SHARES OF COMMON STOCK
ENTITLED TO VOTE  THEREON IS REQUIRED TO APPROVE AND ADOPT THE MERGER  AGREEMENT
AND THE MERGER. WE URGE YOU TO SIGN AND RETURN THE ENCLOSED PROXY AS PROMPTLY AS
POSSIBLE,  WHETHER  OR NOT YOU PLAN TO ATTEND THE  MEETING  IN  PERSON.  YOU MAY
REVOKE THE PROXY AT ANY TIME PRIOR TO ITS  EXERCISE IN THE MANNER  DESCRIBED  IN
THE ATTACHED PROXY  STATEMENT.  ANY STOCKHOLDER  PRESENT AT THE SPECIAL MEETING,
INCLUDING ANY  ADJOURNMENT  OR  POSTPONEMENT  THEREOF,  MAY REVOKE SUCH HOLDER'S
PROXY AND VOTE PERSONALLY ON THE MERGER  AGREEMENT AND THE MERGER AT THE SPECIAL
MEETING.

               PLEASE DO NOT SEND YOUR CERTIFICATES AT THIS TIME.

<PAGE>


                               [NALCO LETTERHEAD]

                                 PROXY STATEMENT
                         SPECIAL MEETING OF STOCKHOLDERS

                                  ------------

          This Proxy Statement is being furnished to holders of shares of common
stock,  par  value  $0.1875  per  share  (the  "Common  Stock"),  including  the
associated  preferred  stock  purchase  rights  issued  pursuant  to the  Rights
Agreement, dated as of June 20, 1996, as amended, between Nalco Chemical Company
and First Chicago  Trust Company of New York as Rights Agent (the  "Rights") and
Series B ESOP Convertible  Preferred Stock, par value $1.00 per share (the "ESOP
Preferred  Stock" and,  together with the Common Stock, the "Shares" and holders
of such Shares,  "Holders") of Nalco Chemical  Company,  a Delaware  corporation
("Nalco",  "we", or "us") in connection with the  solicitation of proxies by our
Board of  Directors  (the "Board of  Directors"  or the  "Board") for use at the
Special Meeting of Shareholders to be held on [__],  [__],  1999, at the offices
of White & Case LLP, 1155 Avenue of the Americas,  New York, New York 10036, and
at any adjournments or postponements thereof (the "Special Meeting").  The Board
of Directors has fixed the close of business on November 19, 1999, as the record
date  (the  "Record  Date")  for  the  Special  Meeting  with  respect  to  this
solicitation.

         At the Special Meeting,  Holders will consider and vote upon a proposal
to approve and adopt the Agreement  and Plan of Merger among Suez  Lyonnaise des
Eaux, a societe anonyme organized and existing under the laws of the Republic of
France ("Suez  Lyonnaise"),  H2O  Acquisition  Co., a Delaware  corporation  and
wholly owned  subsidiary of Suez Lyonnaise  ("H2O"),  and Nalco dated as of June
27,  1999  (the  "Merger   Agreement"),   and  the  Merger  (as  defined  below)
contemplated  thereby.  A copy of the Merger Agreement is attached to this Proxy
Statement  as Appendix A.  Pursuant to the Merger  Agreement  and subject to the
satisfaction  of certain  conditions set forth  therein,  (i) H2O will be merged
with and into Nalco (the "Merger"), (ii) each outstanding share of Common Stock,
including the associated  preferred stock purchase rights issued pursuant to the
Rights  Agreement,  dated as of June 20, 1996, as amended,  between us and First
Chicago  Trust  Company of New York as Rights Agent (the  "Rights")  (other than
shares of Common Stock held in treasury, held by Suez Lyonnaise des Eaux, H2O or
any other subsidiary of Suez Lyonnaise and other than dissenting  shares),  will
be converted into the right to receive an amount in cash equal to $53.00 without
interest thereon,  (iii) each outstanding share of our Series B ESOP Convertible
Preferred  Stock,  par value $1.00 per share (the "ESOP  Preferred  Stock",  and
together with the Common Stock and the Rights,  the "Shares") (other than shares
of ESOP Preferred Stock held in treasury, by Suez Lyonnaise des Eaux, H2O or any
other subsidiary of Suez Lyonnaise), will be converted into the right to receive
an amount in cash equal to $1,060.00  without  interest  thereon ((ii) and (iii)
each, as applicable, the "Merger Consideration"), and (iv) each Share issued and
outstanding  and owned by Suez  Lyonnaise,  H2O or any other  subsidiary of Suez
Lyonnaise  will cease to be  outstanding,  will be canceled and retired  without
payment of any consideration therefore and will cease to exist.

         The Merger is the second step in a two-part transaction, the purpose of
which is the  acquisition  by Suez  Lyonnaise of the entire  equity  interest in
Nalco. The first step was a tender offer (the "Offer")  commenced by H2O on July
1,  1999 for all of the  outstanding  shares  of our  Common  Stock and our ESOP
Preferred Stock at a price of $53.00 per share of Common Stock and $1,060.00 per
share of ESOP  Preferred  Stock,  net to the  seller in cash,  without  interest
thereon (the "Offer Price"). Pursuant to the Offer, which expired on November 8,
1999, H2O accepted for payment  66,195,851.711  shares (including 907,700 shares
tendered  pursuant  to  notices  of  guaranteed  delivery)  of Common  Stock (or
approximately  96.8% of the Common Stock  outstanding) and 346,606.379 shares of
ESOP Preferred  Stock (or 100% of the ESOP Preferred  Stock  outstanding).  On a
fully  diluted  basis,  this  represents   approximately  97.1%  of  all  Shares
outstanding on the Record Date. In accordance  with the Merger  Agreement,  Suez
Lyonnaise  intends to cause H2O to vote in favor of the Merger and to merge with
and into Nalco,  and all Shares (other than Shares owned by Suez Lyonnaise,  H2O
or any other  subsidiary of Suez Lyonnaise,  or Shares held by Nalco as treasury
stock, or by stockholders, if any, of Nalco who are entitled to and who properly
exercise  appraisal rights under the Delaware General  Corporation Law), will be
converted into the right to receive the appropriate Merger Consideration.

         OUR BOARD OF DIRECTORS  RECOMMENDS THAT HOLDERS VOTE THEIR SHARES "FOR"
APPROVAL AND ADOPTION OF THE MERGER AGREEMENT AND APPROVAL OF THE MERGER.

         H2O owns an  aggregate of  73,127,979.291  Shares,  representing,  on a
fully diluted basis, approximately 97.1% of all Shares outstanding on the Record
Date.  Because  the  approval  of the  Holders  of at  least a  majority  of all
outstanding  Shares is sufficient to approve and adopt the Merger  Agreement and
approve the Merger,  H2O can cause the Merger to occur  without the  affirmative
vote of any other  stockholder.  Suez Lyonnaise and H2O have agreed  pursuant to
the Merger  Agreement to vote all their Shares in favor of approval and adoption
of the  Merger  Agreement  and  approval  of  the  Merger.  However,  one of the
anti-takeover  provisions of our Restated Certificate of Incorporation  requires
that this proxy solicitation be mailed to all stockholders.

         Shareholders  are urged to read and consider  carefully the information
contained in this Proxy  Statement and to consult with their personal  financial
and tax advisors.

         This Proxy Statement,  the  accompanying  Notice of Special meeting and
the  accompanying  proxy are first being mailed to Holders on or about  November
__, 1999.

         IT IS IMPORTANT THAT PROXIES BE RETURNED PROMPTLY.  THEREFORE,  WHETHER
OR NOT YOUR PLAN TO ATTEND THE SPECIAL MEETING, PLEASE COMPLETE,  DATE, SIGN AND
RETURN THE PROXY CARD IN THE ENCLOSED POSTAGE-PAID ENVELOPE.

                                 ---------------

             The date of this Proxy Statement is November __, 1999.

                                 ---------------



<PAGE>


         NO  PERSON  IS  AUTHORIZED  TO GIVE  ANY  INFORMATION  OR TO  MAKE  ANY
REPRESENTATIONS  NOT  CONTAINED IN THIS PROXY  STATEMENT  AND, IF GIVEN OR MADE,
SUCH  INFORMATION  OR  REPRESENTATION  SHOULD NOT BE RELIED  UPON AS HAVING BEEN
AUTHORIZED.  THE DELIVERY OF THIS PROXY STATEMENT SHALL NOT IMPLY THAT THERE HAS
BEEN NO CHANGE IN THE  INFORMATION  SET FORTH  HEREIN OR IN THE AFFAIRS OF NALCO
SINCE THE DATE HEREOF.



<PAGE>


                     QUESTIONS AND ANSWERS ABOUT THE MERGER

Q:   With whom are we merging?

A:   H2O will merge into us. H2O is an indirect, wholly owned subsidiary of Suez
     Lyonnaise des Eaux, a societe anonyme organized and existing under the laws
     of the Republic of France. As a result of the proposed merger, subsidiaries
     of Suez Lyonnaise will own all of our stock.

Q:   What will I receive in the merger?

A:   Our  stockholders  (other than  stockholders  who perfect  their  appraisal
     rights) will be entitled to receive $53.00 in cash,  without interest,  for
     each of their  shares of our common  stock or  $1,060.00  in cash,  without
     interest,  for  each of  their  shares  of our  Series  B ESOP  Convertible
     Preferred Stock.

Q:   Why is the  Board of  Directors  recommending  that I vote to  approve  the
     Merger and approve and adopt the Merger Agreement?

A:   In the opinion of the Board of Directors,  the terms and  provisions of the
     Merger  Agreement and the Merger are advisable and in the best interests of
     Nalco and our stockholders. To review the background of and reasons for the
     Merger, see pages ___ to ___.

Q:   How many votes are required to approve the Merger and approve and adopt the
     Merger Agreement?

A:   The affirmative vote of the holders of a majority of all outstanding shares
     of our common stock as of the record date is required to approve the Merger
     and  approve  and  adopt  the  Merger   Agreement   and  the   transactions
     contemplated  thereby,  including the Merger. Suez Lyonnaise,  through H2O,
     already  owns such a majority  of shares  pursuant to a tender  offer,  and
     intends  to vote in favor of the  Merger.  Thus,  its  passage  is  assured
     without the vote of any other stockholder.

Q:   Why is my proxy being solicited?

A:   One  of  the  anti-takeover  provisions  in  our  Restated  Certificate  of
     Incorporation requires this solicitation be mailed to our stockholders,  as
     well as ensuring that a fair price is paid in an acquisition.

Q:   If I am a stockholder, what do I need to do now?

A:   After you read and consider  carefully  the  information  contained in this
     Proxy Statement, please fill out, sign and date your proxy card and mail it
     in the  enclosed  postage-paid  envelope  as soon as  possible so that your
     shares may be represented at the Special Meeting.

Q:   What rights do I have if I oppose the Merger?

A:   Stockholders  who oppose the Merger may dissent from the Merger and seek to
     receive  the fair value of their  shares but only if they  comply  with the
     procedures of Delaware law explained on page ___.

Q:   If my shares are held in "street name" by my broker, will my broker vote my
     shares for me?

A:   Yes, if you provide  instructions to your broker on how to vote. You should
     fill out,  sign,  date and return the proxy card and  otherwise  follow the
     directions provided by your broker regarding how to instruct your broker to
     vote your shares.

Q:   Can I change my vote or revoke my proxy after I have mailed my signed proxy
     card?

A:   Yes,  you can change  your vote at any time  before your vote is counted at
     the Special Meeting.  You can do this in one of three ways.  First, you can
     send a written  notice  stating  that you would like to revoke  your proxy.
     Second,  you can complete and submit a new proxy card. If you choose either
     of these methods,  you must timely submit your notice of revocation or your
     new proxy card to us. If you have  instructed a broker to vote your Shares,
     you must follow  directions  received from your broker to change your vote.
     Third, you may attend the Special Meeting and vote your Shares.

Q:   Should I send in my stock certificate now?

A:   No. Shortly after the Merger, you will receive a letter of transmittal with
     instructions  informing you how to send in your stock  certificates  to our
     paying agent.

Q:   When do you expect the Merger to be completed?

A:   We are working towards  completing the Merger as soon as possible.  For the
     Merger  to  occur,  it  must  be  approved  by  our  stockholders.  If  the
     stockholders  approve the Merger,  we expect to complete  the Merger on the
     date of the Special  Meeting.  We expect to mail letters of transmittal for
     stockholders  to submit their Shares for payment  shortly after the date of
     the Special Meeting.

Q:   What are the tax considerations of the Merger?

A:   The  receipt  of  cash  by a  stockholder  in  exchange  for  common  stock
     surrendered  in the merger or upon the exercise of dissenters  rights will,
     in each case,  constitute a taxable transaction for U.S. federal income tax
     purposes and also may be a taxable transaction under state, local,  foreign
     and other  tax laws.  To review  the tax  considerations  of the  Merger in
     greater detail, see page ____.



<PAGE>


                     Who Can Help Answer My Other Questions?
         If you have more questions about the merger, you should contact
                                White & Case LLP
                           155 Avenue of the Americas
                            New York, New York 10036
                          Attn: Daniel J. Kessler, Esq.




<PAGE>


                 FORWARD-LOOKING STATEMENTS MAY PROVE INACCURATE


         The  statements  contained or  incorporated  by reference in this Proxy
Statement  which are not historical  facts are  forward-looking  statements that
involve   risks  and   uncertainties.   We  wish  to  caution   you  that  these
forward-looking  statements,  such as our outlook for readiness,  expected costs
and contingency  planning regarding year 2000 issues,  future cash requirements,
capital expenditures,  and projections of our future results of operations,  are
only  predictions  or  expectations  and  actual  events or  results  may differ
materially  as a result of risks  facing us.  These risks  include,  but are not
limited to, customer demand for our products and services,  the overall level of
economic  activity in our major  markets,  competitors'  actions,  manufacturing
interruptions,  dependence  on  certain  suppliers,  fluctuations  in  operating
results,  the  attraction  and retention of qualified  personnel and other risks
that  may  be  described  in  our  filings  with  the  Securities  and  Exchange
Commission,  including  our Form 10-K for the year ended  December  31, 1998 and
Forms 10-Q for the quarters ended September 30, 1999.





<PAGE>


                                     SUMMARY

         The following is a summary of material information  contained elsewhere
in  this  Proxy  Statement.  This  Summary  is  not  intended  to be a  complete
description  and is qualified in its entirety by reference to the more  detailed
information  contained in this Proxy  Statement or  incorporated by reference in
this Proxy  Statement or in the documents  attached as Appendices  hereto.  Each
Holder is urged to give careful  consideration to all the information  contained
in this Proxy Statement and the Appendices before voting.

The Special Meeting

         Matters To Be Considered at the Special Meeting. The Special Meeting is
scheduled to be held at 10:00 a.m. on [__],  [__], 1999, at the offices of White
& Case LLP,  1155  Avenue of the  Americas,  New York,  New York  10036.  At the
Special  Meeting,  Holders will consider and vote upon (i) a proposal to approve
and adopt the  Merger  Agreement  and  approve  the  Merger  and (ii) such other
matters as may properly be brought before the Special Meeting.  See "THE SPECIAL
MEETING--Matters To Be Considered At The Special Meeting" and "OTHER MATTERS".

          Record Date and Voting. The Record Date for the Special Meeting is the
close of business on November 19,  1999.  At the close of business on the Record
Date,  there were  outstanding  [__]  shares of Common  Stock,  each of which is
entitled  to  one  vote,  and  no  shares  of  ESOP  Preferred  Stock,  held  by
approximately  [__]  Holders of  record.  The  presence,  either in person or by
proxy,  of a  majority  of the  outstanding  shares  of  Common  Stock  and ESOP
Preferred Stock (each share of ESOP Preferred Stock counting as twenty shares of
Common  Stock)  entitled to be voted is necessary to  constitute a quorum at the
Special Meeting.  Abstentions  (including  broker non-votes) are included in the
calculation  of the number of votes  represented  at a meeting  for  purposes of
determining whether a quorum has been achieved. See "THE SPECIAL MEETING--Record
Date and Voting."

         Vote Required;  Revocability  of Proxies.  Approval and adoption of the
Merger Agreement and approval of the Merger will require the affirmative vote of
the holders of a majority  of the  outstanding  shares of Common  Stock and ESOP
Preferred Stock, voting together as a single class, entitled to vote thereon.

         The required vote on the Merger  Agreement and the Merger is based upon
the total  number of  outstanding  shares of Common  Stock and  shares of Common
Stock into which shares of ESOP Preferred Stock may be converted. The failure to
submit a proxy card (or vote in person at the Special Meeting) or the abstention
from voting by a Holder  (including  broker non-votes) will have the same effect
as a vote "AGAINST"  approval and adoption of the Merger  Agreement and approval
of  the  Merger.  See  "THE  SPECIAL  MEETING--Vote  Required;  Revocability  of
Proxies".

         The presence of a Holder at the Special Meeting will not  automatically
revoke such  Holder's  proxy.  However,  a Holder may revoke a proxy at any time
prior to its exercise by (i)  delivering to Suzzanne  Gioimo,  Secretary,  Nalco
Chemical Company, One Nalco Center, Naperville, Illinois 60563, a written notice
of revocation prior to the Special Meeting, (ii) delivering prior to the Special
Meeting a duly  executed  proxy  bearing  a later  date or (iii)  attending  the
Special Meeting and voting in person.

          Accountants.   Representatives  of  PricewaterhouseCoopers   LLP,  our
principal  accountants for the current year and for the most recently  completed
fiscal year,  are expected to be present at the Special  Meeting,  will have the
opportunity  to make a statement if they desire to do so, and are expected to be
available to respond to appropriate questions.

Solicitation of Proxies

         We will bear the costs of soliciting proxies from Holders.  In addition
to soliciting  proxies by mail, our directors,  officers and employees,  without
receiving additional compensation therefor, may solicit proxies by telephone, by
telegram or in person.  Arrangements  will also be made with brokerage firms and
other custodians,  nominees and fiduciaries to forward solicitation materials to
the  beneficial  owners of shares  held of record by such  persons,  and we will
reimburse  such  brokerage  firms,  custodians,  nominees  and  fiduciaries  for
reasonable  out-of-pocket expenses incurred by them in connection therewith. See
"THE SPECIAL MEETING--Solicitation of Proxies".

Appraisal Rights

         Under the DGCL,  holders  of shares of Common  Stock who do not vote in
favor of approval  and  adoption  of the Merger  Agreement  and  approval of the
Merger and who otherwise  comply with the  requirements of DGCL Section 262 will
be entitled to statutory appraisal rights (such shares collectively  referred to
as the "Dissenting  Shares").  See "THE SPECIAL  MEETING--Appraisal  Rights" and
DGCL Section 262, which is attached hereto as Appendix B.

Parties to the Merger.

         Nalco Chemical  Company.  We  manufacture  and market  specialty  water
treatment and process  chemicals and services  worldwide.  We serve customers in
steelmaking,  pulp and papermaking,  mining and mineral processing,  automotive,
metalmaking,  oil refining and petroleum,  power generation,  food and beverage,
light  industrial,  hospitals,  and office buildings in more than 120 countries.
See "PARTIES TO THE MERGER--Nalco Chemical Company".

         Suez Lyonnaise des Eaux.  Suez Lyonnaise,  a societe anonyme  organized
and  existing  under  the  laws of the  Republic  of  France,  operates  private
infrastructure  services in more than 120 countries,  providing  electricity and
natural gas, waste treatment,  communications  services,  and water services and
maintains  interests  mainly  in  construction  and  capital  investments.  Suez
Lyonnaise des Eaux was formed from the 1997 merger of Compagnie de Suez (builder
of the Suez Canal) and  Lyonnaise  des Eaux.  See  "PARTIES TO THE  MERGER--Suez
Lyonnaise des Eaux".

         H2O Acquisition Co. H2O, a newly incorporated Delaware corporation, has
not  conducted  any  business  other than in  connection  with the Offer and the
Merger  Agreement.  All  of  the  issued  and  outstanding  shares  of  H2O  are
beneficially  owned by subsidiaries of Suez Lyonnaise.  Pursuant to the terms of
the Merger  Agreement,  at the Effective Time, H2O would be merged with and into
Nalco,  with Nalco  continuing  as the  Surviving  Corporation  and an indirect,
wholly owned  subsidiary  of Suez  Lyonnaise.  See  "PARTIES TO THE  MERGER--H2O
Acquisition Co.".

Recommendation of the Board of Directors; Reasons for the Merger

         Our Board of Directors has determined  that the Merger is advisable and
that the Merger Agreement and the transactions  contemplated thereby,  including
the  Offer  and  the  Merger  are  fair  to  and in the  best  interests  of our
shareholders  and has unanimously  approved the Merger Agreement and the Merger.
Accordingly,  the Board unanimously  recommends that Holders vote "FOR" approval
and adoption of the Merger Agreement and approval of the Merger.

         In  determining  to approve and adopt the Merger  Agreement and approve
the Merger  and to  recommend  that  shareholders  approve  and adopt the Merger
Agreement and approve the Merger, the Board of Directors  considered a number of
factors,  as more fully described under "THE  MERGER--Background  of the Merger"
and "--Reasons for the Merger".

Opinion of Financial Advisor

         On June 27,  1999,  Goldman,  Sachs & Co.,  financial  advisor to Nalco
("Goldman"),  delivered its oral opinion,  subsequently confirmed in writing, to
our Board of  Directors  that,  as of the date of such  opinion,  the $53.00 per
share of Common  Stock in cash to be received by the holders of Common  Stock in
the Offer and the Merger is fair from a financial point of view to such holders.

         The full text of Goldman's opinion,  which sets forth assumptions made,
procedures followed, matters considered and limits on the reviews undertaken, is
attached as Exhibit C to this Proxy  Statement,  and is  incorporated  herein by
reference.  Stockholders are urged to read the opinion in its entirety. See "THE
MERGER--Opinion  of  Financial  Advisor"  and the  opinion,  a copy of  which is
attached hereto as Appendix C.

The Merger Agreement

         Subject to the  provisions  of the Merger  Agreement,  at the Effective
Time:  (i) H2O will be merged with and into us, (ii) each  outstanding  share of
our  Common  Stock  (other  than  shares  of  Common  Stock  held  by any of our
subsidiaries,  held  in  treasury,  held  by Suez  Lyonnaise,  H2O or any  other
subsidiary  of  Suez  Lyonnaise  and  other  than  Dissenting  Shares),  will be
converted  into the right to receive  an amount in cash equal to $53.00  without
interest  thereon,  (iii) each  outstanding  share of our ESOP  Preferred  Stock
(other than shares of ESOP Preferred Stock held by any of our  subsidiaries,  in
treasury,  or by Suez  Lyonnaise des Eaux,  H2O or any other  subsidiary of Suez
Lyonnaise),  will be converted into the right to receive an amount in cash equal
to  $1,060.00  without  interest  thereon,   and  (iv)  each  Share  issued  and
outstanding  and owned by Suez  Lyonnaise,  H2O or any other  subsidiary of Suez
Lyonnaise  will cease to be  outstanding,  will be canceled and retired  without
payment  of  any  consideration  therefore  and  will  cease  to  exist,  and no
consideration  will  be  delivered  in  exchange   therefor.   See  "THE  MERGER
AGREEMENT--Effective Time" and "--The Merger".

         Consummation of the Merger is subject to various conditions, including,
among  others,  (i) the  approval  and  adoption of the Merger  Agreement by the
requisite  vote of the  Holders,  (ii)  completion  or  receipt of any review or
approval required by governmental authorities in countries in which we or any of
our  subsidiaries  have operations  material to us and any of our  subsidiaries,
taken as a whole;  and  (iii)  the  absence  of any  injunction  or other  order
preventing consummation of the Merger.

Termination

         The  Merger  Agreement  may be  terminated  and the  Merger  and  other
transactions  contemplated  thereby  may be  abandoned  at any time prior to the
Effective Time,  notwithstanding any approval or adoption by our stockholders by
mutual  written  consent  duly  authorized  by the boards of  directors  of Suez
Lyonnaise, H2O and Nalco.

Regulatory Approvals

         The  obligation of each of Suez  Lyonnaise and Nalco to consummate  the
Merger is  conditioned  upon the  expiration of the  applicable  HSR Act waiting
period and the approval of the Commission of the European  Union. As of the date
of this  Proxy  Statement,  and as a  condition  to the  purchase  of the Shares
pursuant to the Offer,  all  applicable  regulatory  agencies  have approved the
Merger.  See "THE MERGER--Regulatory Approvals".

Financing of the Merger

         The total  amount of funds  required by Suez  Lyonnaise to purchase all
the  outstanding  Shares  pursuant  to the  Merger and to pay  related  fees and
expenses  associated with the Merger would be  approximately  $4.1 billion.  See
"FINANCING OF THE MERGER".

Interests of Certain Persons in the Merger

         Certain of our  employee-directors  have entered into letter agreements
relating to the terms of their  employment  following  the  consummation  of the
Merger. See "THE MERGER--Interests of Certain Persons in the Merger".

U.S. Federal Income Tax Consequences

         The Merger  will be a taxable  transaction  to  Holders.  Holders  will
recognize  gain or loss in the Merger in an amount  determined by the difference
between  the  Merger  Consideration  received  and their tax basis in the Shares
exchanged therefor.  For further information,  see "MATERIAL U.S. FEDERAL INCOME
TAX CONSEQUENCES OF THE MERGER TO U.S. HOLDERS".

Security Ownership of Management and Certain Beneficial Owners

         As of November 9, 1999,  the directors and executive  officers of Nalco
beneficially  owned no Shares.  97.1% of the Shares were  beneficially  owned by
Suez Lyonnaise  through H2O pursuant to the Offer, and Suez Lyonnaise intends to
vote its Shares for the  approval  and  adoption  of the  Merger  Agreement  and
approval  of the Merger.  See  "SECURITY  OWNERSHIP  OF  MANAGEMENT  AND CERTAIN
BENEFICIAL OWNERS".

Market Prices of Common Stock

         The  Common  Stock is  listed  on both the NYSE and the  Chicago  Stock
Exchange  under the name "Nalco  Chemical  Company"  and traded under the symbol
"NLC". On June 23, 1999, the day before the public  announcement  that Nalco was
in talks about a possible business combination transaction, the reported closing
sale  price of the Common  Stock on the NYSE was $37 1/4 per share.  On June 25,
1999, the last full trading day prior to the public  announcement  of the Offer,
the reported  closing sale price of the Common Stock on the NYSE was $42 1/2 per
share.  On June 30,  1999,  the last full  trading  day prior to the date of the
Offer,  the reported  closing sale price of the Common Stock on the NYSE was $51
7/8 per share.  On  November  8, 1999,  the last full  trading  day prior to the
expiration  of the Offer,  the  reported  closing sale price per share of Common
Stock on the NYSE  was $__ per  share.  For  additional  information  concerning
historical  market  prices  of  the  Common  Stock,  see  "THE  PARTIES  TO  THE
TRANSACTION--Nalco Chemical Company--Comparative Market Price Data".

Selected Consolidated Financial Data

         Certain selected historical financial data of Nalco are set forth under
"THE PARTIES TO THE TRANSACTION--Nalco  Chemical  Company--Summary  Consolidated
Financial  Information".  Those  data  should  be read in  conjunction  with the
financial  statements and related notes  incorporated by reference in this Proxy
Statement. See "INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE".



<PAGE>


                               THE SPECIAL MEETING

Matters to be Considered at the Special Meeting

         Each copy of this Proxy Statement mailed to Holders is accompanied by a
proxy card furnished in connection with the solicitation of proxies by the Board
of Directors for use at the Special Meeting. The Special Meeting is scheduled to
be held at 10:00 a.m., on [__],  [__], 1999, at the offices of White & Case LLP,
1155 Avenue of the Americas,  New York, New York 10036. At the Special  Meeting,
Holders  will  consider  and vote upon (i) a proposal  to approve  and adopt the
Merger  Agreement  and  approve  the Merger  and (ii) such other  matters as may
properly be brought before the Special Meeting.

         On June 27,  1999,  our  Board of  Directors  (one  director  not being
present)  unanimously  (i) determined  that the Merger is advisable and that the
Merger Agreement and the transactions contemplated thereby,  including the Offer
and the Merger, are fair to and in the best interests of our stockholders,  (ii)
approved  and adopted the Merger  Agreement  and the  transactions  contemplated
thereby,  (iii) recommended that our stockholders accept the Offer,  approve the
Merger,  and  approve  and  adopt  the  Merger  Agreement  and the  transactions
contemplated  thereby,  and (iv)  approved  an  amendment  to the  Rights  Plan,
rendering it inapplicable to the Offer and the Merger.

         ACCORDINGLY,  OUR BOARD OF DIRECTORS  RECOMMENDS THAT SHAREHOLDERS VOTE
"FOR" APPROVAL AND ADOPTION OF THE MERGER  AGREEMENT AND APPROVAL OF THE MERGER.
See "THE MERGER--Background of the Merger" and "--Reasons for the Merger."

         SHAREHOLDERS ARE REQUESTED PROMPTLY TO COMPLETE,  DATE, SIGN AND RETURN
THE ACCOMPANYING PROXY CARD IN THE ENCLOSED  POSTAGE-PAID  ENVELOPE.  FAILURE TO
RETURN A PROPERLY  EXECUTED  PROXY CARD OR TO VOTE AT THE SPECIAL  MEETING  WILL
HAVE THE SAME EFFECT AS A VOTE AGAINST THE MERGER.

Record Date and Voting

          The Board of Directors has fixed the close of business on November 19,
1999, as the Record Date for the determination of the holders of Shares entitled
to notice of and to vote at the Special Meeting.  Only shareholders of record at
the  close of  business  on that date will be  entitled  to vote at the  Special
Meeting.  At the close of business on the Record Date, there were [__] shares of
Common Stock and [__] shares of ESOP Preferred Stock outstanding and entitled to
vote at the Special Meeting, held by approximately [__] shareholders of record.

         Each holder of Common  Stock on the Record Date will be entitled to one
vote for each share held of record and each  holder of ESOP  Preferred  Stock on
the Record Date will be entitled to twenty  votes for each share held of record.
The presence,  in person or by proxy,  of a majority of the  outstanding  Shares
entitled to be voted at the Special  Meeting is necessary to constitute a quorum
thereat.  Abstentions  (including  broker  non-votes)  will be  included  in the
calculation  of the  number of votes  represented  at the  Special  Meeting  for
purposes of determining whether a quorum has been achieved.

         If the enclosed  proxy card is properly  executed and received by Nalco
in time to be voted at the Special Meeting,  the Shares represented thereby will
be voted in accordance with the  instructions  marked thereon.  Executed proxies
with no instructions indicated thereon will be voted "FOR" approval and adoption
of the Merger Agreement and approval of the Merger.

         The Board of Directors is not aware of any matters  other than that set
forth in the  Notice of  Special  Meeting  of  Shareholders  that may be brought
before the  Special  Meeting.  If any other  matters  properly  come  before the
Special  Meeting,  the  persons  named in the  accompanying  proxy will vote the
Shares  represented  by all  properly  executed  proxies on such matters in such
manner as shall be determined  by a majority of the Board of  Directors,  except
that Shares  represented  by proxies which have been voted  "against" the Merger
Agreement  and  the  Merger  will  not be used to  vote  "for"  postponement  or
adjournment of the Special  Meeting for the purpose of allowing  additional time
for soliciting  additional votes "for" the Merger Agreement and the Merger.  See
"--Vote Required; Revocability of Proxies" and "OTHER MATTERS".

         SHAREHOLDERS  SHOULD NOT  FORWARD  ANY  CERTIFICATES  WITH THEIR  PROXY
CARDS. IN THE EVENT THE MERGER IS CONSUMMATED,  CERTIFICATES SHOULD BE DELIVERED
IN ACCORDANCE  WITH  INSTRUCTIONS  SET FORTH IN A LETTER OF  TRANSMITTAL,  WHICH
WOULD BE SENT TO  SHAREHOLDERS  BY FIRST CHICAGO,  IN ITS CAPACITY AS THE PAYING
AGENT, AS SOON AS REASONABLY PRACTICABLE AFTER THE EFFECTIVE TIME.

Vote Required; Revocability of Proxies

         The affirmative vote of holders of a majority of the outstanding Shares
entitled to vote thereon is required to approve and adopt the Merger Agreement.

         Because the required  vote of Holders on the Merger  Agreement  and the
Merger is based upon the total  number of  outstanding  Shares,  the  failure to
submit  a proxy  card  (or to vote in  person  at the  Special  Meeting)  or the
abstention from voting by a Holder  (including  broker  non-votes) will have the
same effect as a vote  "against"  approval and adoption of the Merger  Agreement
and approval of the Merger.

         The presence of a Holder at the Special Meeting will not  automatically
revoke such  Holder's  proxy.  However,  a Holder may revoke a proxy at any time
prior to its exercise by (i)  delivering to Suzzanne  Gioimo,  Secretary,  Nalco
Chemical  Company,  One Nalco Center,  Naperville,  Illinois,  60563,  a written
notice of revocation prior to the Special Meeting,  (ii) delivering prior to the
Special  Meeting a duly executed  proxy bearing a later date or (iii)  attending
the Special Meeting and voting in person.

         Because the 97.1%  interest of Suez Lyonnaise will be present and voted
in favor of the proposal,  the presence of a quorum is guaranteed and passage of
the proposal is assured  without the vote of any other  stockholder.  This proxy
solicitation is being conducted because one of the  anti-takeover  provisions of
our  Certificate  of  Incorporation  requires  it.  For  additional  information
regarding the  conditions  of each parties'  obligation to effect the merger see
"THE MERGER AGREEMENT--Conditions to Consummation of the Merger".

         No vote of the shareholders of Suez Lyonnaise is required in connection
with the Merger  Agreement  or the  Merger.  The  obligations  of Nalco and Suez
Lyonnaise to  consummate  the Merger are  subject,  among other  things,  to the
condition  that the Holders  approve and adopt the Merger  Agreement and approve
the Merger. See "THE MERGER AGREEMENT--Conditions to the Merger."

Solicitation of Proxies

         We will  bear the  expenses  in  connection  with the  solicitation  of
proxies.  Upon request,  we will reimburse brokers,  dealers and banks, or their
nominees,  for reasonable  expenses  incurred in forwarding  copies of the proxy
material  to the  beneficial  owners  of Shares  such  persons  hold of  record.
Solicitation  of proxies will be made  principally by mail.  Proxies may also be
solicited in person,  or by telephone or telegraph,  by our officers and regular
employees.  Such  persons  will  receive  no  additional  compensation  for such
services, but will be reimbursed for any out-of-pocket expenses incurred by them
in connection with such services.

Procedures for Exchange of Certificates

         As  soon  as  practicable   after  the  Effective  Time,  a  letter  of
transmittal and  instructions  for surrendering  stock  certificates  evidencing
shares of Common  Stock will be mailed to each holder of Common Stock for use in
exchanging  such holder's stock  certificates  for the Merger  Consideration  to
which such holder is entitled as a result of the Merger. STOCKHOLDERS SHOULD NOT
SEND ANY  CERTIFICATES  WITH THEIR PROXY CARDS.  Stockholders  should follow the
procedures described in "THE MERGER-- Procedures for Exchange of Certificates."

                         THE PARTIES TO THE TRANSACTION

Nalco Chemical Company.

        We  manufacture  and  market   specialty  water  treatment  and  process
chemicals and services  worldwide.  We serve customers in steelmaking,  pulp and
papermaking,  mining  and  mineral  processing,  automotive,   metalmaking,  oil
refining and petroleum,  power generation,  food and beverage, light industrial,
hospitals,  and  office  buildings  in more than 120  countries.  Our  principal
executive offices are located at One Nalco Center,  Naperville,  Illinois 60563,
and the telephone number is (630) 305-1000.

Comparative Market Price Data

         Until  recently,  the primary  market for the Common  Stock was the New
York Stock Exchange.  In addition,  the Common Stock is listed and traded on the
Chicago Stock  Exchange.  The ticker  symbol for the Common Stock is "NLC".  The
following table sets forth,  for the periods  indicated,  the high and low sales
prices per share of Common  Stock on the New York Stock  Exchange as reported by
the Dow Jones News Service:

                                                 High               Low

        1997:
        Quarter ended 12/31/97...........      $42 7/16           37 13/16

        1998:
        Quarter ended 3/31/98............       40 5/8            37 1/2
        Quarter ended 6/30/98............       40 7/8            34 7/16
        Quarter ended 9/30/98............       36 1/8            28 1/16
        Quarter ended 12/31/98...........       34 5/16           28 3/8

        1999:
        Quarter ended 3/31/99............       30 15/16          26
        Quarter ended 6/30/99............       51 7/8            26 3/4
        Quarter ended 9/30/99............     [______]           [______]
        ------------------------


         On June 23,  1999,  the day before we  announced  that we were in talks
about a possible business  combination  transaction,  the reported closing sales
price of the Common  Stock on the New York Stock  Exchange was $37 1/4 per share
of Common Stock. On June 25, 1999, the last full trading day prior to the public
announcement of the Offer,  the reported closing sales price of the Common Stock
on the New York  Stock  Exchange  was $42 1/2 per  share  of  Common  Stock.  On
November 8, 1999, the last trading day prior to the expiration of the Offer, the
last reported sales price of the Common Stock on the New York Stock Exchange was
$_____ per share. Holders of Common Stock are encouraged to review current share
prices.


Dividends

Since February 1, 1997, we have paid the following cash dividends (and no common
stock dividends) to holders of record of our common stock:

                                                              Dividend Amount
        1996:
        Quarter ended 12/31/96........................            $0.25
        1997:
        Quarter ended 3/31/97.........................            $0.25
        Quarter ended 6/30/97.........................            $0.25
        Quarter ended 9/30/97.........................            $0.25
        Quarter ended 12/31/97........................            $0.25
        1998:
        Quarter ended 3/31/98.........................            $0.25
        Quarter ended 6/30/98.........................            $0.25
        Quarter ended 9/30/98.........................            $0.25
        Quarter ended 12/31/98........................            $0.25
        1999:
        Quarter ended 3/31/99.........................            $0.25
        Quarter ended 6/30/99.........................            $0.25
        Quarter ended 9/30/99.........................            $0.25


 Summary Consolidated Financial Information

         Set forth below is certain summary  historical  consolidated  financial
information of Nalco and our subsidiaries.  The historical financial information
(other  than the ratios of  earnings  to fixed  charges)  was  derived  from the
audited consolidated  financial statements included in our Annual Report on Form
10-K for the year ended December 31, 1998 (the "1998 Annual  Report"),  and from
the  unaudited  summary  consolidated   financial  statements  included  in  our
Quarterly  Reports on Form 10-Q for the periods ended June 30, 1999 and June 30,
1998 (the "Quarterly Reports"),  and other information and data contained in the
1998 Annual  Report and the  Quarterly  Reports.  More  comprehensive  financial
information  is included in such  reports and the  financial  information  which
follows is  qualified  in its  entirety by  reference  to, and should be read in
conjunction  with, such reports and all of the financial  statements and related
notes  contained  therein,  copies of which may be  obtained  as set forth below
under the caption "AVAILABLE INFORMATION."



<PAGE>
<TABLE>
<CAPTION>

                             Nalco Chemical Company

               SELECTED CONSOLIDATED FINANCIAL AND OPERATING DATA
                      ($ in millions except per share data)

- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                                     Six Months
Statement of Operations:                                       Year Ended December 31,                             Ended June 30,
- --------------------------------------- -------------------------------------------------------------------- -----------------------
<S>                                     <C>            <C>            <C>            <C>            <C>          <C>       <C>
                                          1994           1995           1996           1997           1998        1998      1999
                                                                                                                         (unaudited)
Revenues............................... $1,246.8       $1,214.5       $1,303.5       $1,433.7       $1,573.5     $770.1    $794.7

Operating costs and expenses:
   Cost of products sold...............    543.7          531.3          568.6          629.6          714.1      346.1     358.1
   Selling, administrative and             498.8          477.7          518.2          561.4          618.0      302.4     309.7
      research.........................
   Cost reduction program..............                                                     -          180.0          -         -
                                        --------       --------       --------       --------       --------     ------    ------
   Total operating costs and expenses..  1,110.7        1,009.0        1,086.8        1,191.0        1,512.1      648.5     667.8

Operating income (loss)................    136.1          205.5          216.7          242.7           61.4      121.6     126.9
   Interest and investment income......     16.6            7.2            2.6            0.7            2.4        0.7      20.5
   Interest expense....................    (21.8)         (16.2)         (14.4)         (15.3)         (26.5)     (11.8)    (16.0)
   Equity in earnings of partnership...      6.9           16.9           24.5           28.2           22.6       14.9       8.5

Earnings from Continuing Operations
   Before Income Taxes.................    137.8          213.4          229.4          256.3           59.9      125.4     139.9
Income tax (expense)/benefit...........     64.6           77.7           83.5           92.9           22.0       45.4      48.5
                                        --------       --------       --------       --------       --------     ------    ------
Earnings from Continuing Operations....     73.2          135.7          145.9          163.4           37.9          -         -
Earnings from Discontinued Operations..     23.9           18.0            8.6              -              -          -         -
Cumulative Effect of Change in
   Accounting for Business Process
   Reengineering Costs, Net of Taxes...        -              -              -           (4.5)             -          -         -
                                        --------       --------       --------       --------       --------     ------    ------
   Net Earnings.........................  $ 97.1        $ 153.7        $ 154.5        $ 158.9         $ 37.9     $ 80.0    $ 91.4
                                        ========       ========       ========       ========       ========     ======    ======
Per Share of Common Stock
Earnings from Continuing
   Operations - Diluted.................  $ 0.88         $ 1.71         $ 1.86         $ 2.10         $ 0.40     $ 1.04    $ 1.21
Discontinued Operations.................     .31            .24            .11              -              -          -         -
Accounting Change.......................       -              -              -           (.06)             -          -         -
                                        --------       --------       --------       --------       --------     ------    ------
Net Earnings............................    1.19           1.95           1.97           2.04            .40       1.04      1.21
                                        ========       ========       ========       ========       ========     ======    ======
Cash Dividends Paid.....................    .945            .99           1.00           1.00           1.00       0.50      0.50


                                                                                                                     Six Months
Statement of Operations:                                       Year Ended December 31,                             Ended June 30,
- --------------------------------------- -------------------------------------------------------------------- -----------------------
                                          1994           1995           1996           1997           1998        1999 (unaudited)

Consolidated Balance Sheet Data:
   Working Capital......................  $ 87.8         $ 14.2         $ 95.5        $ 153.4        $ 126.3           $ 37.2
   Property, plant and equipment, net...   523.9          520.0          522.0          492.5          517.3            485.7
   Total assets......................... 1,269.2        1,360.5        1,394.5        1,440.9        1,650.7          1,668.8
   Long-term Debt.......................   245.3          221.5          252.6          335.3          496.2            510.1
   Deferred Income Taxes................    56.8           53.3           42.9           37.2           15.6             29.1
   Total Shareholders' Equity...........   544.2          580.3          654.5          652.7          585.9            649.8

</TABLE>

<PAGE>


Certain Projections of Future Operating Results

         Prior to entering into the Merger Agreement, Suez Lyonnaise conducted a
due  diligence  review of Nalco and in  connection  with  such  review  received
certain  non-public  information  provided by us,  including  certain  projected
financial data (the  "Projections") for the year ending December 31, 1999. We do
not in the ordinary  course  publicly  disclose  projections and the Projections
were  not  prepared  with a view to  public  disclosure.  We have  advised  Suez
Lyonnaise and H2O that the Projections  were prepared by our management based on
numerous assumptions including, among others, projections of revenues, operating
income,  benefits and other expenses,  depreciation and amortization and capital
expenditure.  The  Projections  do not give  effect to the  Offer,  the  Merger,
expenditure  requirements  or the potential  combined  operations of us and Suez
Lyonnaise.  Such  information is set forth below in this Proxy Statement for the
limited  purpose of giving Holders access to financial  projections  prepared by
our management  that were made available to Suez Lyonnaise and H2O in connection
with the Merger Agreement and the Offer.

                             Nalco Chemical Company
                     Selected 1999 Projected Financial Data
                 (In Millions of Dollars Except Per Share Data)

                                    Second     Third     Fourth      Total
                                     Qtr        Qtr        Qtr       Year
                                    -----      -----      -----      -----
Net Sales...........................408.8      423.0      418.7    1,645.7
Cost of Products Sold...............184.3      192.7      190.7      747.7
                                    -----      -----      -----      -----
Gross Earnings......................224.5      230.3      228.0      898.0
                                    -----      -----      -----      -----
Total Operating Expenses............133.4      135.9      137.5      535.6
                                    -----      -----      -----      -----
Operating Earnings.................. 68.5       69.5      64.6       267.4
                                     ----       ----      ----       -----
Earnings Before Taxes............... 64.6       65.6      61.8       253.1
    Income Taxes.................... 23.1       23.5      22.1        90.6
                                     ----       ----      ----       -----
Net Earnings........................ 41.5       42.1      39.7       162.5
                                     ====       ====      ====       =====
Earnings Per Share..................$0.55      $0.56      $0.52      $2.15


Suez Lyonnaise des Eaux

         Suez Lyonnaise, a societe anonyme organized and existing under the laws
of the Republic of France, operates private infrastructure services in more than
120  countries,   providing   electricity  and  natural  gas,  waste  treatment,
communications  services,  and water services and maintains  interests mainly in
construction  and capital  investments.  Suez Lyonnaise des Eaux was formed from
the 1997 merger of Compagnie de Suez  (builder of the Suez Canal) and  Lyonnaise
des Eaux.  The principal  executive  offices of Suez Lyonnaise are located at 1,
rue   d'Astorg,    75008   Paris,   France   and   the   telephone   number   is
011-33-1-40-06-64-00.  As a result  of the  acceptance  and  purchase  of Shares
pursuant to the Offer, Suez Lyonnaise indirectly owns approximately 97.1% of our
outstanding  Common Stock. In addition,  pursuant to the Merger Agreement,  Suez
Lyonnaise may designate all of the members of our Board of Directors.

H2O Acquisition Co.

         H2O  Acquisition  Co. is an indirect,  wholly owned  subsidiary of Suez
Lyonnaise  and has been formed  solely for the purpose of the Merger.  As of the
date  hereof,  and as a result of the Offer,  H2O owns 97.1% of our  outstanding
capital  stock.  H2O has not engaged in any business  activity  unrelated to the
Offer and the Merger. The principal executive offices of H2O are located care of
Suez Lyonnaise des Eaux, 1, rue d'Astorg,  75008 Paris, France and the telephone
number is 011-33-1-40-06-64-00.

                                   THE MERGER

         Under the Merger Agreement,  H2O will merge with and into Nalco and the
separate  corporate  existence of H2O will cease,  and we will be the  Surviving
Corporation in the Merger (the "Surviving Corporation").

         Each share of our Common  Stock  outstanding  immediately  prior to the
Effective  Time  (other  than (i) any such  shares  which are held by any of our
subsidiaries,  in our treasury,  or which are held,  directly or indirectly,  by
Suez Lyonnaise or any direct or indirect subsidiary of Suez Lyonnaise (including
H2O),  all of which will be canceled  and none of which will receive any payment
with  respect to the  Merger,  and (ii)  shares of our Common  Stock as to which
appraisal rights have not been forfeited under the Delaware General  Corporation
Law (the  "DGCL"),  if  effective  notice of exercise of  appraisal  rights with
respect to such  shares  under  Section 262 of the DGCL was  required  and given
prior to the Effective Time ("Dissenting  Shares")) will be canceled and will be
converted  into the right to receive an amount in cash equal to $53.00,  without
interest thereon. Holders of Dissenting Shares ("Dissenting  Stockholders") will
be  entitled  to receive  from the  surviving  corporation  in the Merger a cash
payment  in the amount of the "fair  value" of such  shares,  determined  in the
manner  provided  in  Section  262 of  the  DGCL.  See  "THE  MERGER--Rights  of
Dissenting Stockholders".

         Each of our stock options issued and  outstanding at the Effective Time
will be  converted  into  the  right  to  receive  a cash  payment  equal to the
difference between $53.00 and the exercise price of such options.

         Each share of ESOP  Preferred  Stock  outstanding at the Effective Time
(other  than  shares  of  ESOP  Preferred  Stock  which  are  held by any of our
subsidiaries or in our treasury,  or which are held, directly or indirectly,  by
Suez Lyonnaise or any direct or indirect subsidiary of Suez Lyonnaise (including
H2O),  all of which will be canceled  and none of which will receive any payment
with  respect to the Merger)  will be canceled  and will be  converted  into the
right to receive an amount in cash equal to $1,060.00, without interest thereon.

         Suez  Lyonnaise  has informed us that it intends to fund payment of the
Merger Consideration  through existing cash, marketable securities and available
credit lines.

         The Merger is not contingent on any financing. Upon consummation of the
Merger,  each outstanding share of H2O's common stock will be converted into one
share of common  stock of the  Surviving  Corporation.  After the  Merger,  Suez
Lyonnaise,  through wholly owned subsidiaries,  will own 100% of the outstanding
shares of common stock, par value $0.01 per share, of the Surviving Corporation.
For a detailed  discussion of provisions  contained in the Merger  Agreement see
"THE MERGER AGREEMENT."

Background of the Merger

         We undertook an exploration of our strategic  alternatives beginning in
the first  quarter  of 1999.  During  meetings  from  March 23 to April 5, 1999,
Goldman  presented our management  with a description of strategic  alternatives
and a list of various  entities that it considered  to be  potentially  suitable
strategic partners.

         On April 5, 1999,  representatives  of Goldman  and the  Company met to
consider further the list of potential  strategic partners in greater detail. At
this  meeting,  we and Goldman  identified a select  group of companies  that we
considered suitable candidates for initial contact.

         On April 9, 1999,  a Goldman  representative  contacted  Mr.  Christian
Maurin, the Chairman of Degremont,  a wholly owned subsidiary of Suez Lyonnaise,
and  advised him that we were in the process of  considering  various  strategic
options  that  could  ultimately  include  a role for  Degremont.  As a  result,
representatives  of us and  Degremont  participated  in a meeting the  following
week.  This  meeting was held in Paris and attended  by,  among  others,  Mr. W.
Steven Weeber,  our Vice Chairman and Executive Vice President,  Mr. Maurin, Mr.
Pascal Remy,  Executive Vice President of Degremont,  Mr. Charles Dupont,  Chief
Executive Officer of Degremont,  and representatives of Goldman. At the meeting,
we  advised  we were  still in the  process  of  considering  various  strategic
options,  including  a  possible  sale of  Nalco.  The  parties  also  discussed
Degremont's potential suitability as a strategic partner with us.

         Degremont entered into a confidentiality  agreement,  dated as of April
13, 1999,  with us and was  subsequently  provided with  background  information
relating to us and our operations.

         Between  the dates of April 6 and  April 26,  1999,  we  directly,  and
through   Goldman,   contacted  six  other  entities  that  were  considered  as
potentially suitable strategic partners.  Each of these six entities was advised
of the fact that we were considering  various strategic options.  As a result of
this  initial  contact,  five of the six entities  approached  by us and Goldman
expressed a desire to consider  further a possible  transaction  with us. Two of
these five  entities  entered  into  confidentiality  agreements  with us, which
agreements included standstill provisions,  and were permitted an opportunity to
review  background  information  relating to us and our affiliates.  Discussions
with these entities did not produce any firm proposals to acquire Nalco.

         On April 21, 1999, senior  representatives  of each of Degremont,  Suez
Lyonnaise and Nalco met in Chicago, Illinois. The meeting was attended by, among
others,  Mr. Edward J. Mooney,  our Chairman and Chief  Executive  Officer,  and
Goldman  representatives.  We and  Goldman  representatives  answered  questions
raised by the representatives of Suez Lyonnaise, Degremont and J.P. Morgan, Suez
Lyonnaise's and Degremont's financial advisor.

         On April 27, 1999,  Mr. Maurin sent a letter to Mr. Mooney  advising us
of Degremont's  interest in acquiring the company in a cash transaction.  At its
regularly  scheduled  meeting  of April 28,  1999,  our Board of  Directors  was
advised of (i)  Degremont's  interest in acquiring  Nalco and (ii)  developments
relating to the various other entities with whom confidentiality  agreements had
been signed.

         On May 2, 1999,  Goldman  sent a letter to  Degremont  requesting  that
Degremont indicate an approximate purchase price at which it would be willing to
acquire  Nalco.  On May 10,  1999,  Degremont  provided  us  with a  preliminary
non-binding  proposal in which it (i) reiterated its interest in acquiring Nalco
and (ii) indicated a potential  purchase price in the range of $43.00-$49.00 per
share of Common  Stock.  We were  advised  that this  preliminary  proposal  was
subject to Degremont's due diligence review of Nalco.  During the evening of May
10, a representative of Goldman advised Mr. Maurin and Mr. Remy that there would
be no further  discussions if the proposed purchase price remained in that range
($43.00-$49.00).

         On  May  12,  1999,  Mr.  Maurin  and  Mr.   Mooney,   in  a  telephone
conversation,  agreed to meet to  discuss a  possible  transaction  between  the
parties. On May 17 and May 18, 1999, senior  representatives of Degremont,  Suez
Lyonnaise,  and us participated  in meetings in Paris.  At these  meetings,  the
participants  discussed various issues relating to a possible  transaction among
the parties, including potential synergies between the companies.

         On May 25, 1999, Degremont sent a further non-binding proposal relating
to a potential cash acquisition of Nalco at a purchase price of $52.00 per share
of Common Stock.  This offer  represented a premium of 53% over our then-current
market price and a premium of 66% over our three-month  weighted  average market
price.   Shortly  thereafter,   Mr.  Mooney  and  Mr.  Maurin  had  a  telephone
conversation  during  which Mr.  Mooney  advised  Mr.  Maurin  that our Board of
Directors  would be meeting on June 5, 1999 to  consider,  among  other  things,
Degremont's  non-binding proposal to acquire Nalco and the status of discussions
with other entities.

         Following our Board of Directors'  meeting,  Mr. Mooney had a telephone
conversation  with Mr. Maurin on June 7, 1999 during which he advised Mr. Maurin
that, although our Board of Directors appreciated  Degremont's most recent offer
and  considered  it  to be a  serious  proposal,  the  purchase  price  remained
insufficient.

         On June 9,  1999,  Mr.  Maurin and Mr.  Mooney had a further  telephone
conversation  during which they reached an  agreement,  subject to the favorable
negotiation of a definitive  merger agreement,  whereby  Degremont  indicated it
would  acquire  Nalco for a purchase  price of $54.00 per share of Common Stock,
provided it was given certain assurances relating to exclusivity in negotiations
with us.

         From June 11, 1999, legal, financial and accounting  representatives of
Suez Lyonnaise  continued the due diligence review of us until a definite merger
agreement was reached.

         Beginning on June 16, 1999 through  June 18, 1999,  representatives  of
Suez  Lyonnaise,  Degremont  and  Nalco  met in New  York  City to  discuss  and
negotiate the proposed acquisition of Nalco.

         On June 17, 1999,  our  Board of Directors met to discuss the status of
discussions.  Following our Board of Directors' meeting, representatives of Suez
Lyonnaise and Degremont  participated in a meeting with Mr. Mooney,  Mr. Weeber,
Mr. Stephen D. Newlin, our President,  Mr. William E. Buchholz,  our Senior Vice
President and Chief Financial  Officer,  and Mr. James F. Lambe, our Senior Vice
President for Human Resources, during which the parties considered the potential
terms of the  continued  employment  of our officers  with Nalco  following  the
proposed acquisition of Nalco by Suez Lyonnaise.  Subsequently,  four additional
officers participated in similar discussions.

         On June 24,  1999,  following  a  significant  increase  in the trading
volume and price of our Common Stock, we issued a press release  announcing that
we were engaged in discussions regarding a possible business combination.  Later
that same day, members of the senior management of Suez Lyonnaise, Degremont and
Nalco met in New York City to discuss  further  ongoing issues raised during the
due diligence review. During these discussions, Suez Lyonnaise indicated that it
wished to renegotiate  the purchase price.  Later that  afternoon,  our Board of
Directors  was  advised  of this  development  and about  issues  raised by Suez
Lyonnaise with respect to the proposed merger agreement.

         On June 25,  1999,  the parties  continued  to  negotiate  the proposed
purchase price and other terms of the proposed merger agreement  relating to the
conditions  to the Offer,  termination  rights and payment of fees and expenses.
Agreement was reached, subject to final negotiation of the definitive agreement,
that Suez Lyonnaise  would agree to acquire Nalco for a purchase price of $53.00
per share of Common Stock and $1,060.00 per share of ESOP Preferred Stock.

         The legal  representatives  of Suez  Lyonnaise  and Nalco  continued to
negotiate the terms of the proposed merger agreement throughout June 26 and June
27, 1999.

     At a meeting held on June 27, 1999,  our Board of Directors  approved  Suez
Lyonnaise's  offer to acquire Nalco for a purchase  price of $53.00 per share of
Common Stock and $1,060.00 per share of ESOP Preferred Stock, the Merger and the
Merger Agreement.  Later that same evening, the Merger Agreement was executed by
Suez Lyonnaise, H2O and us.

Reasons for the Merger

         In approving  the Merger  Agreement and the  transactions  contemplated
thereby,  and recommending that Holders accept the Offer and tender their Shares
pursuant to the Offer,  our Board of  Directors  considered a number of factors,
including, but not limited to, the following:

                  (1) The  financial  condition  and  results of  operations  of
         Nalco,  as well  as the  projected  financial  results,  prospects  and
         strategic  objectives  of Nalco,  taking into  consideration  the risks
         involved in achieving  those  results,  prospects and objectives in our
         industry.  The  members of our Board of  Directors  were  knowledgeable
         about our affairs,  including the present and possible  future economic
         and competitive environment in which we operate our business. Our Board
         of  Directors  viewed  as  supportive  that the  transaction  offered a
         substantial  premium over current and  historic  trading  prices of our
         Common Stock,  and that the  achievement  of comparable  values through
         growth of our business could not be achieved with certainty in the near
         term.

                  (2)  Historical  market  prices and trading  information  with
         respect to the  Common  Stock,  including  the fact that the $53.00 per
         share of Common  Stock to be received by our  stockholders  in both the
         Offer and  Merger  represents  a  substantial  premium  of 24% over the
         closing  market  price of $42.50 per share of Common  Stock on June 25,
         1999 (the last  trading day prior to the Board's  approval of the Offer
         and the Merger) and of 42% over the closing  market price of $37.25 per
         share of Common  Stock on June 23, 1999 (the last  trading day prior to
         our public  announcement  that we were engaged in business  combination
         discussions)  and the fact that the $53.00 per share of Common Stock to
         be received by our stockholders in both the Offer and Merger represents
         a  premium  of 24% over the  ten-year  high  market  price per share of
         Common Stock.  An analysis of premiums paid in comparable  transactions
         supported our Board of Directors' recommendations.

                  (3)  Developments  within the  specialty  chemicals  industry,
         including the trend towards consolidation within the industry which has
         resulted in competitors that are significantly  larger and have greater
         financial  resources  than  Nalco,  which  indicated  to our  Board  of
         Directors  the  challenges  facing  us in  remaining  competitive  in a
         consolidating industry.

                  (4) Our Board of  Directors'  view,  after  consultation  with
         management  and Goldman and  considering  the  process,  regarding  the
         likelihood  of the  existence  of other buyers on terms as favorable as
         those in the Offer and the Merger.  Our Board of  Directors  determined
         that,  based  on the  terms  contained  in the  Offer  and the  Merger,
         including the Offer Price, it was unlikely that our stockholders  would
         be extended a comparable offer on as favorable terms.

                  (5) Presentations to our Board of Directors by Goldman and the
         oral opinion of Goldman (subsequently confirmed in writing) that, as of
         June 27,  1999,  the  $53.00  per share of  Common  Stock in cash to be
         received by the holders of shares of Common  Stock in the Offer and the
         Merger is fair from a financial point of view to such holders. The full
         text of the written  opinion of Goldman,  which sets forth  assumptions
         made, procedures followed,  matters considered and limits on the review
         undertaken,  is  attached  as Annex C to this  Proxy  Statement  and is
         incorporated  herein by reference.  HOLDERS OF SHARES ARE URGED TO READ
         THIS OPINION IN ITS ENTIRETY.

                  (6) The availability of appraisal rights under  Section 262 of
          DGCL for dissenting stockholders.

                  (7) The terms and  conditions of the Merger  Agreement and the
         course of the  negotiations  resulting in the  execution  thereof.  Our
         Board of Directors viewed  favorably that the Merger Agreement  imposed
         limited conditions to the acceptance of Shares in the Offer and closing
         of the  Merger  and the  limited  termination  rights  under the Merger
         Agreement, thus making consummation of the transaction more likely than
         one in which the agreement  imposes more significant  conditions to the
         consummation or greater termination rights.

                  (8) That our  Board of  Directors  viewed  each  share of ESOP
         Preferred Stock as being financially equivalent to the twenty shares of
         Common  Stock into  which it can be  converted.  Further,  our Board of
         Directors  viewed  the Offer and the  Merger  as  according  equivalent
         treatment to both the ESOP  Preferred  Stock and the Common Stock given
         that holders of ESOP Preferred Stock were entitled to receive $1,060.00
         per share of such stock pursuant to the Offer and the Merger,  and that
         such amount  reflected the fact that each share of ESOP Preferred Stock
         automatically  converts  into  twenty  shares  of Common  Stock  upon a
         transfer of record ownership (i.e., $53.00 x 20 = $1,060.00).

                  (9) The  likelihood  that the  proposed  acquisition  would be
         consummated,  including  the  likelihood  of obtaining  the  regulatory
         approvals required pursuant to, and satisfying the other conditions to,
         the  Offer  and the  Merger  contained  in the  Merger  Agreement,  the
         experience,  reputation  and financial  condition of Suez Lyonnaise and
         the risks to Nalco if the acquisition were not consummated.

                  (10) That the Merger Agreement permits our Board of Directors,
         in the  exercise  of its  fiduciary  duties,  to  terminate  the Merger
         Agreement in favor of an unsolicited  superior acquisition proposal and
         the conditions permitting such termination.

                  (11) The  recommendation of our management with respect to the
         proposed transaction.

         The members of our Board of Directors  evaluated the factors  described
above in view of their  knowledge of the business  and  operations  of Nalco and
their business  judgment.  In view of the wide variety of factors  considered in
connection  with its  evaluation  of the  Offer  and the  Merger,  our  Board of
Directors  did not find it  practicable  to, and did not,  quantify or otherwise
attempt  to assign  relative  weights  to the  specific  factors  considered  in
reaching its  determination.  On balance,  the factors described above supported
our Board of Directors'  recommendation.  Our Board of Directors recognized that
Suez  Lyonnaise,  by virtue of the  acquisition  of the Shares  pursuant  to the
Merger  Agreement,  will have  sufficient  voting  power to  approve  the Merger
without  the  affirmative  vote  of  any  other  stockholder  of  Nalco.   While
consummation  of the Offer would result in the remaining  stockholders  of Nalco
receiving a premium for their shares of Common Stock over the trading  prices of
such shares  prior to the  announcement  of the Offer and the  Merger,  it would
eliminate  any  opportunity  for the  stockholders  of Nalco  other  than H2O to
participate  in the  potential  future growth  prospects of Nalco.  Our Board of
Directors,  however, believed that the value of such potential future growth was
reflected in the Offer price to be paid and also recognized that there can be no
assurance of growth, if any, to be attained by Nalco in the future.

Recommendation of the Board of Directors

         On June 27,  1999 our  Board  of  Directors  (one  director  not  being
present)  unanimously  (i) determined  that the Merger is advisable and that the
Merger Agreement and the transactions contemplated thereby,  including the Offer
and the Merger, are fair to and in the best interests of our stockholders,  (ii)
approved  and adopted the Merger  Agreement  and the  transactions  contemplated
thereby,  (iii) recommended that our stockholders accept the Offer,  approve the
Merger,  and  approve  and  adopt  the  Merger  Agreement  and the  transactions
contemplated  thereby,  and (iv)  approved  an  amendment  to the  Rights  Plan,
rendering it inapplicable  to the Offer and the Merger.  For a discussion of the
material factors considered by the Board of Directors in reaching its conclusion
and the reasons why the Board  determined that the Merger is  procedurally  fair
see  "SPECIAL  FACTORS--Nalco's  Reasons for the Merger;  Recommendation  of Our
Board of Directors."

Opinion of Financial Advisor

         On June 27, 1999,  Goldman  delivered  its oral  opinion,  subsequently
confirmed  in writing,  to our Board of  Directors  that,  as of such date,  the
$53.00 per share of Common Stock in cash to be received by the holders of Common
Stock in the Offer and the Merger is fair from a financial point of view to such
holders.

         The full text of Goldman's opinion,  which sets forth assumptions made,
procedures followed, matters considered and limits on the reviews undertaken, is
attached as Exhibit C to this Proxy  Statement,  and is  incorporated  herein by
reference.  Stockholders  are urged to read the  opinion  in its  entirety.  The
summary of Goldman's  opinion set forth in this Proxy  Statement is qualified in
its entirety by reference to the full text of the opinion.  Goldman's opinion is
directed only to the  consideration  received by the  stockholders  and does not
constitute a recommendation to any stockholder as to how such stockholder should
vote at the Special Meeting.

         We  retained  Goldman  to act as our  exclusive  financial  advisor  in
connection  with the Merger.  We selected  Goldman based on its  qualifications,
expertise and reputation,  as well as its investment  banking  relationship  and
familiarity with Nalco.

         In arriving at its opinion, Goldman reviewed certain publicly available
business  and  financial  information  relating to Nalco,  as well as the Merger
Agreement.  Goldman also reviewed certain other  information that we provided to
it, including  certain internal  analyses and forecasts  prepared by management.
Goldman discussed with our management the business and prospects of Nalco.

         Goldman  considered certain of our financial and stock market data, and
compared  that data with  similar  data for other  publicly  held  companies  in
businesses  similar to ours.  Goldman also  considered  the  financial  terms of
certain  other  transactions  which have been  recently  effected.  Goldman also
performed such other studies and analyses which it deemed appropriate.

         In   connection   with  its   review,   Goldman   did  not  assume  any
responsibility for independent  verification of any of the foregoing information
and relied on its being complete and accurate. In addition, Goldman did not make
an  independent  evaluation or appraisal of our assets or  liabilities,  nor was
Goldman furnished with any such evaluations or appraisals.

Certain Effects of the Merger

         The purpose of the Offer was to provide our stockholders with liquidity
for their Shares by enabling  them to sell their Shares at a fair price and at a
substantial premium over recent and historical market prices.

         The  acquisition  of the Shares was  structured  as a cash tender offer
followed  by a merger in order to (i) effect a prompt and  orderly  transfer  of
ownership  of Nalco from the  stockholders  to Suez  Lyonnaise  and (ii) provide
stockholders  with  cash for all of  their  Shares  more  quickly  than  through
alternative  transaction  structures  that had been  considered  by our Board of
Directors.

         The  structure  of  the   transactions  was  the  result  of  extensive
negotiations   between  us  and  Suez   Lyonnaise.   In  connection   with  such
negotiations,  Suez Lyonnaise indicated its desire to structure the transactions
to qualify for purchase accounting. In order to induce Suez Lyonnaise to proceed
with the transactions and to provide our stockholders  with the benefits of Suez
Lyonnaise's  offer for  Nalco,  we agreed to proceed  based on Suez  Lyonnaise's
proposed structure.

         Suez Lyonnaise's  purpose for engaging in the transactions is to enable
it to obtain  complete  ownership  of Nalco,  thereby  becoming  entitled to all
benefits that result from such ownership.  Such benefits include  management and
investment  discretion  with regard to the future  conduct of our business,  the
benefits  of the  profits  generated  by the  operations  of the company and any
increase in Nalco's value. Similarly,  Suez Lyonnaise will also bear the risk of
any decrease in the value of Nalco.

         Upon  the  consummation of the Merger,  Suez Lyonnaise,  through wholly
owned subsidiaries, will own 100% of the outstanding Shares.

Rights Agreement

     The Rights Agreement  contains certain  provisions that may delay, defer or
prevent a takeover  of Nalco.  Pursuant  to the Merger  Agreement,  our Board of
Directors  has  taken  all  action  necessary  to render  the  Rights  Agreement
inapplicable to the Offer, the Merger and any other transaction  contemplated by
the  Merger  Agreement.  On June 27,  1999,  our  Board of  Directors  adopted a
resolution  approving an amendment to the Rights Agreement prior to execution of
the Merger Agreement to the effect that, among other things,  the acquisition of
Shares  pursuant to the Offer and the Merger  would not  constitute a Triggering
Event  (as  defined  in  the  Rights  Agreement)  and  no  Rights  would  become
exercisable  pursuant to the Rights  Agreement  as a result of  execution of the
Merger  Agreement or the consumation of the transactions  contemplated  thereby.
The Amendment to the Rights Agreement is dated June 28, 1999.

Accounting Treatment of the Merger

         The  Merger  will  be  accounted  for  under  the  purchase  method  of
accounting  under  which  the total  consideration  paid in the  Merger  will be
allocated among the surviving corporation's  consolidated assets and liabilities
based on the fair values of the assets acquired and liabilities assumed.

Regulatory Approvals

United States


         Under the  Hart-Scott-Rodino  Antitrust  Improvements  Act of 1976,  as
amended (the "HSR Act"),  and the rules  promulgated  thereunder  by the Federal
Trade Commission, certain mergers and acquisitions may not be consummated unless
notice  has  been  given  and  certain  information  has been  furnished  to the
Antitrust  Division of the United  States  Department of Justice and the Federal
Trade  Commission and certain waiting period  requirements  have been satisfied.
The Merger is subject to the HSR Act requirements.

         We filed with the Antitrust Division and the Federal Trade Commission a
Notification  and Report Form with  respect to the Merger on July 2, 1999.  Suez
Lyonnaise filed with the Antitrust  Division and the Federal Trade  Commission a
Notification  and Report Form with respect to the Merger on July 2, 1999.  Under
the HSR Act, the Merger may not be consummated until the expiration of a waiting
period of 30-calendar days following the receipt of all required filings, unless
the waiting period is earlier  terminated by the Federal Trade Commission or the
Antitrust  Division,  or unless the waiting  period is extended by a request for
additional  information  or  documentary  material.  Termination  of the waiting
period was granted effective October 22, 1999.

         State  Attorneys  General  and  private  parties  also may bring  legal
actions under the federal or state  antitrust laws under certain  circumstances.
There can be no assurance  that a challenge to the proposed  merger on antitrust
grounds will not be made or of the result if such a challenge is made.

European Union

        The EC Merger Regulation (Council Regulation No. 4064/89 of December 21,
1989, as amended) requires  notification to the European Commission within seven
days of the conclusion of an agreement or  commencement of an offer to acquire a
controlling interest or the commencement of a cash tender offer therefor, of all
concentrations   between  companies  which  are  deemed  to  have  a  "Community
dimension" because they exceed certain global and European turnover  thresholds.
Such concentrations may not be consummated until the European Commission, acting
within  fixed  deadlines,  approves  them as being  "compatible  with the Common
Market." A  concentration  is  compatible  with the Common Market if it does not
create  or  strengthen  a  dominant  position  as a result  of  which  effective
competition would be significantly  impeded in the European Economic Area, or in
a substantial part of it.

    Suez  Lyonnaise  filed  a  notification  in  conformity  with  Article  4 of
Regulation (EEC) No. 4064/89 of the Council on July 20, 1999, On August 20, 1999
Suez  Lyonnaise  received  notice  that  its  filing  satisfied  the  EC  Merger
Regulation and that the Merger did not conflict with the Common Market.

                              THE MERGER AGREEMENT

Effective Time of the Merger

         The Merger will become  effective  upon the filing of either (a) a duly
executed and verified  Certificate of Merger,  (b) the Merger Agreement or (c) a
Certificate of Ownership and Merger, with the Secretary of State of the State of
Delaware (the "Effective  Time").  The filing will occur after all conditions to
the merger contained in the Merger Agreement have been satisfied or waived.  We,
Suez  Lyonnaise  and H2O  anticipate  that the  Merger  will be  consummated  as
promptly as practicable following the Special Meeting.

Conditions to Consummation of the Merger

         The respective  obligations of Nalco,  Suez Lyonnaise and H2O to effect
the Merger are subject to the satisfaction of various  conditions at or prior to
the Effective Time. These conditions include, among others:

         (a) Stockholder  Approval.  The Merger  Agreement  and the transactions
contemplated  thereby  shall have been  approved and adopted by the  affirmative
vote of our stockholders to the extent required by Delaware Law and our Restated
Certificate of Incorporation;

         (b) HSR  Act;  EC.  Any  waiting  period  (and any  extension  thereof)
applicable  to the  consummation  of the  Merger  under the HSR Act  shall  have
expired or been  terminated  and the commission of the European Union shall have
approved the transactions under Regulation (EC) No. 4064/89,  as amended, of the
Council of the European Union;

         (c)  Other  Reviews/Approvals.  Any  review  or  approval  required  by
governmental  authorities  in countries  in which we or any of our  subsidiaries
have operations  material to us and any of our  subsidiaries,  taken as a whole,
shall have been completed or obtained;

         (d) No Order.  No United States  federal or state or Republic of France
governmental  authority  or other  agency or  commission  or court of  competent
jurisdiction shall have enacted,  issued,  promulgated,  enforced or entered any
law,  rule,  regulation,  executive  order,  decree,  injunction  or other order
(whether  temporary,  preliminary or permanent)  which is then in effect and has
the effect of prohibiting consummation of the Merger; and

         (e) Offer.  H2O or its  permitted  assignee  shall have  purchased  all
Shares validly tendered and not withdrawn pursuant to the Offer.

No Solicitation Of Other Offers

         The Merger  Agreement  provides  that we shall not, nor shall we permit
any of our subsidiaries to, nor shall we authorize any representative of ours or
any of our  subsidiaries  to,  directly or  indirectly  solicit,  facilitate  or
initiate,  or knowingly  encourage the  submission of any proposal or offer from
any third party  relating to any direct or indirect  acquisition  or purchase of
all or a substantial part of our assets or of over 20% of our voting securities,
any tender  offer or  exchange  offer that if  consummated  would  result in any
person  beneficially  owning 20% or more of our voting  securities,  any merger,
consolidation,  business  combination,  sale of  substantially  all our  assets,
recapitalization,  liquidation, dissolution or similar transaction involving us,
other than the  transactions  contemplated by the Merger  Agreement or any other
transaction the  consummation  of which could  reasonably be expected to impede,
interfere  with,  prevent or  materially  delay the Offer or the Merger or which
could reasonably be expected to dilute materially the benefits to Suez Lyonnaise
of the transactions contemplated by the Merger Agreement.

Representations and Warranties

         We have made  various  representations  and  warranties  in the  Merger
Agreement relating to: (a) corporate organization,  existence,  power, authority
and qualification;  (b) enforceability;  (c) capital structure; (d) consents and
approvals;  (e)  non-contravention  and compliance with laws; (f) Securities and
Exchange  Commission  filings;  (g)  absence of certain  material  changes;  (h)
compliance with laws; (i) litigation; (j) employee benefit plans; (k) taxes; (l)
absence of undisclosed  material  liabilities;  (m) intellectual  property;  (n)
accuracy of the Proxy  Statement and other  documents  filed with the Securities
and Exchange  Commission with respect to the merger, and related materials;  (o)
utilization of, and payment of fees to, brokers and finders;  (p)  environmental
matters; (q) labor matters; and (r) year 2000 compliance.

         Suez Lyonnaise des Eaux and H2O  Acquisition Co. have also made various
representations  and  warranties  in  the  Merger  Agreement  relating  to:  (a)
corporate  organization,  existence,  power,  authority  and  qualification  (b)
enforceability;  (c) consents, approvals and non-contravention;  (d) utilization
of, and payment of fees to, brokers and finders; (e) financing; and (f) accuracy
of  the  information  contained  in  filings  of  required  documents  with  the
Securities  and  Exchange  Commission  (g) absence of  litigation;  (h) no prior
activities by H2O; and (i) the fact that neither is an affiliated shareholder of
Nalco.

Covenants

         Each of the parties to the Merger Agreement has agreed to cooperate and
use its  reasonable  best  efforts  to  fulfill  or  obtain  fulfillment  of the
conditions to the consummation of the Merger.

         We  agreed  that we and  each of our  subsidiaries  shall  conduct  our
businesses only in the ordinary  course and shall use all reasonable  efforts to
preserve  substantially  intact  the  business  organization  of  Nalco  and our
subsidiaries,  to keep  available  the  services  of our  current  officers  and
employees  and  to  preserve  the  current   relationships   of  Nalco  and  our
subsidiaries with customers, suppliers and other persons with which Nalco or any
subsidiary of ours has significant  business  relations.  We further agreed that
neither  we nor any  subsidiary  of ours shall  directly  or  indirectly  do, or
propose to do, any of the following  without the prior  written  consent of Suez
Lyonnaise:

         (a)  amend or otherwise  change its  Certificate  of  Incorporation  or
By-laws or equivalent organizational documents;

         (b)  issue,  deliver,  sell, pledge,  dispose of, grant,  encumber,  or
authorize  the  issuance,   delivery,  sale,  pledge,   disposition,   grant  or
encumbrance  of (i) any  shares  of  capital  stock of any class of Nalco or any
subsidiary, or any options, warrants,  convertible securities or other rights of
any kind to acquire any shares of such  capital  stock,  or any other  ownership
interest (including,  without limitation, any phantom interest), of Nalco or any
subsidiary (except for the issuance of Shares issuable pursuant to stock options
outstanding  on June  27,  1999)  or (ii)  any  assets  of  Nalco  or any of our
subsidiaries for consideration in excess of $25,000,000 in the aggregate;

         (c)   declare,   set   aside,   make  or  pay  any  dividend  or  other
distribution, payable in cash, stock, property or otherwise, with respect to any
of its capital  stock,  except for  regular  quarterly  dividends  on the Shares
declared and paid at times consistent with past practices;

         (d)  reclassify,  combine,  split, subdivide, or issue or authorize the
issuance of any other  securities  in respect of, in lieu of or in  substitution
for shares of our  capital  stock,  or redeem,  purchase or  otherwise  acquire,
directly  or  indirectly,  any  shares  of  our  capital  stock  or  any  of our
subsidiaries or any other securities thereof or any rights,  warrants or options
to acquire any such shares or other securities;

         (e)  (i)   acquire   (including,   without   limitation,   by   merger,
consolidation, or acquisition of stock or assets) any corporation,  partnership,
other business  organization or any division thereof for consideration in excess
of  $10,000,000  in the  aggregate;  (ii) except for  borrowings  under existing
credit  facilities  not to exceed  $30,000,000  in the  aggregate  and excepting
transactions between us and any subsidiary,  incur any indebtedness for borrowed
money or issue any debt securities or assume, guarantee or endorse, or otherwise
as an accommodation become responsible for, the obligations of any person; (iii)
except for transactions between us and any subsidiary, make any loans, advances,
or capital  contributions  to, or investments  in, any person,  for an amount in
excess of  $10,000,000 in the aggregate;  (iv)  authorize  capital  expenditures
which  are,  in the  aggregate,  in excess of  $25,000,000  for us or any of our
subsidiaries;  (v) acquire any assets for consideration in excess of $10,000,000
in the  aggregate;  or  (vi)  enter  into  or  amend  any  contract,  agreement,
commitment  or  arrangement  with respect to any matter set forth in (i) to (vi)
above;

         (f)  except as provided in Section 5.01 of the Disclosure Schedule,  as
contemplated  by the Merger  Agreement  or in the  ordinary  course of  business
consistent  with past  practices  (i)  increase the  compensation  payable or to
become payable to its officers or employees,  (ii) other than in accordance with
existing  policies  and  arrangements,  grant  any  severance  pay  to or  (iii)
establish,  adopt, enter into or amend any collective bargaining,  bonus, profit
sharing,  thrift,   compensation,   stock  option,  restricted  stock,  pension,
retirement, deferred compensation,  employment,  termination, severance or other
plan,  agreement,  trust,  fund,  policy or  arrangement  for the benefit of any
director, officer or employee, except as contemplated by the Merger Agreement or
to the extent required by applicable law or the terms of a collective bargaining
agreement or a contractual obligation existing on June 27, 1999;

         (g)   other  than  as  required  by   generally   accepted   accounting
principles, make any change to its accounting policies or procedures;

         (h)  agree to the  settlement  of any claim or  litigation  which would
have a Material Adverse Effect (as defined in the Merger Agreement);

         (i)  make, change or rescind any material Tax (as defined in the Merger
Agreement)  election  (other than (i) recurring  elections that  customarily are
made in  connection  with the filing of any Tax Return (as defined in the Merger
Agreement);  provided  that  any such  elections  are  consistent  with the past
practices of us or our  subsidiaries,  as the case may be; (ii) gain recognition
agreements  under  Section 367 of the Code (as defined in the Merger  Agreement)
and Treasury  regulations  thereunder with respect to transactions  occurring in
the 1998 fiscal year of Nalco;  and (iii) elections with respect to subsidiaries
purchased by us under  Section  338(h)(10) of the Code or, solely in the case of
non-U.S.  subsidiaries purchased by us, Section 338(g) of the Code) or settle or
compromise any material Tax liability that is the subject of an audit, claim for
delinquent Taxes, examination,  action, suit, proceeding or investigation by any
taxing authority;

         (j)  except to the extent required under existing employee and director
benefit plans, agreements or arrangements as in effect on the date of the Merger
Agreement or as  contemplated by the Merger  Agreement,  accelerate the payment,
right to payment or vesting of any bonus, severance, profit sharing, retirement,
deferred  compensation,   stock  option,  insurance  or  other  compensation  or
benefits;

         (k)   pay,   discharge  or  satisfy  any  material   claims,   material
liabilities or material obligations (absolute,  accrued, asserted or unasserted,
contingent or otherwise),  other than the payment, discharge or satisfaction (A)
of any such material claims, material liabilities or material obligations in the
ordinary course of business and consistent with past practice or (B) of material
claims,  material  liabilities  or material  obligations  reflected  or reserved
against in, or contemplated  by, the consolidated  financial  statements (or the
notes  thereto)  contained  in  our  SEC  Reports  (as  defined  in  the  Merger
Agreement);

         (l)   enter  into  any  agreement,  understanding  or  commitment  that
restrains,  limits or impedes our or any of our subsidiaries' ability to compete
with or conduct any business or line of business, including, but not limited to,
geographic limitations on our or any of our subsidiaries' activities;

         (m)   materially  modify,  amend or terminate any material  contract to
which we are a party or waive any of our material rights or claims except in the
ordinary course of business consistent with past practice; or

         (n)   agree or enter  into,  in  writing  or  otherwise,  or amend  any
contract,  agreement  commitment  or  arrangement  with  respect  to  any of the
foregoing actions.

Termination of the Merger Agreement

         The  Merger  Agreement  may be  terminated  and the  Merger  and  other
transactions  contemplated  thereby  may be  abandoned  at any time prior to the
Effective Time,  notwithstanding  any approval or adoption by our  stockholders:
(i) by mutual written consent duly authorized by the boards of directors of Suez
Lyonnaise, H2O and Nalco; or (ii) if any United States federal or state court of
competent  jurisdiction  or  court  of  the  Republic  of  France  of  competent
jurisdiction or other United States federal or state  governmental  authority or
other  governmental  authority  of the  Republic of France  shall have issued an
order,  decree,  ruling or taken any other  action  restraining,  enjoining,  or
otherwise  prohibiting the Merger and such order, decree, ruling or other action
shall have become final and non-appealable.

Amendments to the Merger Agreement

         The Merger Agreement may only be amended by a writing signed by each of
the parties thereto by action taken by or on behalf of their  respective  boards
of  directors  at any time  prior to the  Effective  Time.  After  approval  and
adoption of the Merger Agreement and the transactions  contemplated  thereby, no
amendment to the Merger  Agreement  may be made which would reduce the amount or
change the type of  consideration  into which each Share shall be converted upon
consummation of the Merger.

                   Interests of Certain Persons in the Merger

         In  considering  the  recommendation  of our  Board of  Directors  with
respect to the  Merger  Agreement  and the  transactions  contemplated  thereby,
stockholders  should be aware that, in addition to the matters  discussed above,
certain  members of both management and our Board of Directors have interests in
the Merger in addition to the  interests  of our  stockholders  generally  which
create conflicts of interest.

Employment Agreements

         The  following  is a  summary  description  of the  Employment  Letters
executed by the respective  executive.  The summary is qualified in its entirety
by  reference  to the  Form of  Agreement  as to Terms  of  Employment  which is
incorporated in the Schedule 14D-1.

         In  connection  with the Merger  Agreement,  Degremont,  a wholly owned
subsidiary of Suez Lyonnaise,  H2O and each of Messrs.  George M. Brannon,  III,
William E. Buchholz, John T. Burns, Michael E. Kahler, James F. Lambe, Edward J.
Mooney,  Stephen  D.  Newlin,  William J. Roe,  and W.  Steven  Weeber  (each an
"Executive")  entered  into a letter  agreement  (each an  "Employment  Letter")
relating to the terms of their  employment  following  the  consummation  of the
Merger. The Employment  Letters contain identical terms,  except as noted below.
The Employment Letters provide for Nalco to offer the Executive  employment with
us, and each  Executive to accept such  employment  on the terms and  conditions
described  below.  It is currently  expected that the offer of  employment  will
become  effective  November 9, 1999 (the  "Effective  Date").  The parties  have
agreed to enter  into,  and are  currently  negotiating,  definitive  employment
agreements,  and it is  anticipated  that such  agreements  will be between each
Executive and Nalco.

         Each Employment  Letter:  (i) provides a three year employment  period,
with a one-year  evergreen  after the three year period and a  six-month  notice
provision  for  non-renewal;  (ii)  salary  commensurate  with  the  Executive's
position;  (iii) a bonus  opportunity  comparable  to those  provided to similar
senior  executives;  (iv)  participation  in all  incentive  and  benefit  plans
provided to similar  senior  executives;  and (v)  includes a retention  payment
("Retention  Payment")  equal to two times the  Executive's  salary plus regular
Management Incentive Plan target bonus (as of June 22, 1999) payable in cash, if
the  Executive  is employed by us for three years from the date of the change in
control.

         Each of the Employment Letters provides for various severance payments,
if an Executive's  employment is terminated  without  "cause" by us or for "good
reason" by the Executive;  provided,  however, that such severance payments will
be offset by the Retention Payment if the termination occurs within two years of
the Executive's  receipt of the Retention  Payment.  Each Employment Letter also
provides  for a  full  golden  parachute  excise  tax  gross-up  (excluding  the
Retention  Payment)  for  future  changes in  control,  but only in the event of
termination  without  "cause"  by us or  resignation  for "good  reason"  by the
Executive.

         Each   Employment   Letter   also   includes   a   provision   for  (i)
non-competition  with us and  non-solicitation of customers and employees during
employment  and for two years  thereafter  and (ii) a  perpetual  agreement  for
non-disclosure, non-disparagement and availability for litigation support.

         Each  Employment  Letter also provides for a settlement of existing key
executives  agreements with each Executive through: (i) a payment of three times
the sum of the Executive's current base salary and regular management  incentive
program  ("MIP")  bonus,  which  will be paid on the  Effective  Date or shortly
thereafter,  (ii) three  times the  Executive's  supplemental  MIP bonus and, in
addition,  his outstanding 1997 and 1998 Performance  Share Awards to be paid at
the end of the three-year  period  following the Effective  Date, with interest,
provided the  Executive is still  employed by the Company or in the event of the
Executive's prior death, disability, termination by us without "cause" or by the
Executive  for  "good  reason",  prior  to the end of the end of the  three-year
period,  assuming in each case a performance  level of 100% of the target award;
(iii) payments of outstanding restricted stock awards, including the outstanding
1995  Performance  Share Plan awards,  stock options and a full golden parachute
excise tax gross-up,  with respect to the change in control payments (except for
the Retention Payment) made in connection with the transactions  contemplated by
the Merger Agreement on the Effective Date or shortly thereafter.

Indemnification and Insurance

         The  Merger  Agreement   provides  that  the  surviving   corporation's
Certificate of Incorporation and By-laws will contain provisions with respect to
indemnification  of directors and officers that are no less favorable than those
set  forth  in our  Restated  Certificate  of  Incorporation  and  By-laws.  The
surviving  corporation  will  maintain  in effect  the  current  directors'  and
officers' liability insurance or substantially similar insurance with respect to
matters  occurring  prior to the Effective Time for a period of at least 6 years
(provided that the surviving corporation in the Merger is not required to pay an
annual  premium for any such policy in excess of 200% of the last annual premium
paid by us prior to the Merger Agreement).

  MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES OF THE MERGER TO U.S. HOLDERS

         The following is a description of the material U.S.  federal income tax
consequences  of the Merger to Holders of Shares that  dispose of such Shares in
the Merger,  that are United States Persons (as defined below), and that, on the
date of  disposition,  hold such  Shares as capital  assets  (as  defined in the
Internal  Revenue Code of 1986, as amended (the "Code"))  (each a "United States
Holder"). This discussion is based on the Code, income tax regulations, proposed
and  final,   issued   under  the  Code,   and   administrative   and   judicial
interpretations of the Code and regulations,  each as in effect and available on
the date of this  Proxy  Statement.  These  income  tax  laws,  regulations  and
interpretations,  however,  may  change at any  time,  and any  change  could be
retroactive to the date of this Proxy  Statement.  Although we will not seek any
rulings from the Internal  Revenue Service or an opinion of counsel with respect
to the transactions  contemplated by the Merger  Agreement,  we believe that the
Merger will have the U.S.  federal income tax  consequences  described  below to
United States Holders.

         We urge all Holders to consult  their own tax  advisors  regarding  the
U.S. federal,  state, local, and non-U.S. tax consequences of the disposition of
Shares in the Merger. This description does not address aspects of U.S. taxation
other than U.S. federal income taxation, nor does it address all aspects of U.S.
federal  income  taxation  that may be  applicable  to  particular  holders.  In
addition,  this  description  does not  address  the  U.S.,  State or local  tax
consequences or the tax consequences in jurisdictions other than the U.S. of the
Merger.  The following  discussion does not address taxpayers subject to special
treatment   under  the  U.S.   federal  income  tax  laws,   such  as  financial
institutions,  real estate investment trusts,  regulated  investment  companies,
brokers  and  dealers or traders in  securities  or  currencies,  persons  whose
functional  currency is not the U.S.  dollar,  insurance  companies,  tax-exempt
organizations, S corporations, persons that hold Shares as part of a position in
a  straddle  or as part of a hedging  or  conversion  transaction,  persons  who
acquired  Shares  pursuant to an exercise of employee stock options or rights or
otherwise as compensation,  persons who hold employee stock options or rights to
acquire Shares and taxpayers subject to alternative minimum tax.

         A "United States Person" is a beneficial  owner of Common Stock or ESOP
Preferred Stock, as the case may be, that, for U.S. federal income tax purposes,
is: (1) a citizen or resident  of the U.S.,  including  some former  citizens or
residents of the U.S.; (2) a partnership or corporation  created or organized in
or under the laws of the U.S. or any state  thereof,  including  the District of
Columbia; (3) an estate if its income is subject to U.S. federal income taxation
regardless of its source; or (4) a trust if such trust validly has elected to be
treated as a United States person for U.S. federal income tax purposes or if (a)
a U.S. court can exercise primary  supervision over its  administration  and (b)
one or more  United  States  persons  have the  authority  to control all of its
substantial decisions.

         A United  States  Holder  generally  will realize gain or loss upon the
surrender of such holder's  Shares  pursuant to the Merger in an amount equal to
the  difference,  if any,  between the amount of cash received and such holder's
aggregate adjusted tax basis in the Shares surrendered therefor.

         In general,  any gain or loss  recognized  by a United States Holder in
the Merger will be eligible for capital gain or loss treatment. Any capital gain
or loss  recognized by a United States Holder will be long-term  capital gain or
loss if the Shares  giving rise to such  recognized  gain or loss have been held
for more than one year; otherwise, such capital gain or loss will be short term.
In the case of a  noncorporate  United  States  Holder,  generally  the  maximum
marginal U.S. federal income tax rate applicable to long-term  capital gain will
be lower than the maximum  marginal U.S.  federal income tax rate  applicable to
ordinary income. The deductibility of capital losses is subject to limitations.

         For corporations,  a capital gain is subject to U.S. federal income tax
at a maximum rate of 35% while any capital loss can be offset only against other
capital gains.  Any unutilized  capital loss generally can be carried back three
years and forward five years to be offset against net capital gains generated in
such years.

         Under  the  U.S.  federal  backup  withholding  tax  rules,  unless  an
exemption  applies,  the Paying  Agent (as  defined  below)  will be required to
withhold, and will withhold, 31% of all cash payments to which a Holder or other
payee is entitled pursuant to the Merger  Agreement,  unless the holder or other
payee provides a tax identification  number (social security number, in the case
of an  individual,  or  employer  identification  number,  in the  case of other
holders),  certifies  that such number is correct,  and otherwise  complies with
such backup withholding tax rules. Each holder,  and, if applicable,  each other
payee,  should complete and sign the Substitute Form W-9 included as part of the
letter of transmittal to be returned to the Paying Agent in order to provide the
information and certification  necessary to avoid backup withholding tax, unless
an exemption  applies and is established in a manner  satisfactory to the Paying
Agent.

         THE U.S.  FEDERAL  INCOME  TAX  CONSEQUENCES  SET  FORTH  ABOVE ARE FOR
GENERAL   INFORMATION  ONLY  AND  IS  NOT  INTENDED  TO  CONSTITUTE  A  COMPLETE
DESCRIPTION  OF ALL TAX  CONSEQUENCES  RELATING  TO THE  MERGER.  EACH HOLDER OF
SHARES IS URGED TO CONSULT ITS OWN TAX ADVISOR TO DETERMINE THE  PARTICULAR  TAX
CONSEQUENCES  TO SUCH  HOLDER OF THE MERGER  (INCLUDING  THE  APPLICABILITY  AND
EFFECT OF U.S. STATE, LOCAL AND OTHER TAX LAWS).

                             FINANCING OF THE MERGER

         The aggregate net cost to Suez Lyonnaise of acquiring all of the Shares
in the Offer and the  Merger,  making  required  payments  to  holders  of stock
options (see  "SPECIAL  FACTORS - Interests of Certain  Persons in the Merger"),
paying  off our  existing  indebtedness  and  paying  the fees and  expenses  is
expected  to be  approximately  $4.1  billion.  These  funds are  expected to be
available to H2O from Suez Lyonnaise and to Suez Lyonnaise and/or various of its
subsidiaries from cash on hand at the Effective Time.

                       PLANS OR PROPOSALS AFTER THE MERGER

         Following the Merger,  we will be an indirect,  wholly owned subsidiary
of Suez  Lyonnaise,  our shares of Common  Stock will no longer be traded on the
New York Stock  Exchange or the Chicago Stock Exchange and the  registration  of
the Common Stock under the Exchange Act will be terminated.  Except as set forth
herein,  it is expected that we and our subsidiaries  will continue to engage in
water  treatment  activities on a basis  substantially  consistent  with current
operations.  Following the Merger, only Suez Lyonnaise will have the opportunity
to benefit from any of our  earnings  and growth,  and will bear the risk of any
decrease in our value.

     Suez  Lyonnaise  does not have any  present  plans that  relate to or would
result in an extraordinary coporate transaction such as a merger, reorganization
or  liquidation,  other than  transactions  which may  provide a more  efficient
structure for operating in certain geographical  jurisdictions,  involving Nalco
or any of its  subsidiaries  or a sale or other transfer of a material amount of
assets of Nalco or any of its  subsidiaries or any changes in Nalco's  corporate
structure or business.  Suez Lyonnaise,  however,  will continue to evaluate the
business and  operations  of Nalco after the Merger and make such changes as are
deemed appropriate.

                     PROCEDURES FOR EXCHANGE OF CERTIFICATES

         Suez Lyonnaise has  designated  First Chicago Trust Company of New York
to act as paying  agent (the  "Paying  Agent")  for  purposes of making the cash
payments  contemplated  by the  Merger  Agreement.  Suez  Lyonnaise  or H2O will
deposit  in trust  with the Paying  Agent  cash in United  States  dollars in an
aggregate amount equal to the sum of (a) the product of (i) the number of shares
of Common Stock outstanding  immediately prior to the Effective Time (other than
(A) any shares of Common Stock which are held by any of our subsidiaries, in our
treasury or which are held,  directly or  indirectly,  by Suez  Lyonnaise or any
direct or indirect  subsidiary of Suez Lyonnaise  (including  H2O), all of which
will be canceled  and none of which will receive any payment with respect to the
Merger,  and (B)  Dissenting  Shares) and (ii) $53.00 and (b) the product of (i)
the number of shares of ESOP Preferred Stock  outstanding  immediately  prior to
the Effective Time (other than any shares of ESOP Preferred Stock which are held
by any of our  subsidiaries,  in our  treasury  or which are held,  directly  or
indirectly,  by Suez  Lyonnaise  or any direct or  indirect  subsidiary  of Suez
Lyonnaise  (including H2O), all of which will be canceled and none of which will
receive  any  payment  with  respect to the Merger) and (ii) $1,060 ((a) and (b)
together the "Payment  Fund").  The Paying Agent will,  pursuant to  irrevocable
instructions,  deliver to the Holders their  respective  portions of the Payment
Fund according to the procedure summarized below.

         At the close of  business  on the day of the  Effective  Time our stock
ledger will be closed.

         As soon as practicable  after the Effective  Time,  Suez Lyonnaise will
cause  the  Paying  Agent to mail  and/or  make  available  to each  holder of a
certificate  theretofore  evidencing  Shares, a notice and letter of transmittal
advising  such holder of the  effectiveness  of the Merger and the procedure for
surrendering  to  the  Paying  Agent  such  certificate  or  certificates  which
immediately  prior to the Effective  Time  represented  outstanding  Shares (the
"Certificates") in exchange for the Merger Consideration. Upon the surrender for
cancellation to the Paying Agent of such Certificates, together with a letter of
transmittal,  duly executed and completed in  accordance  with the  instructions
thereon, and any other items specified by the letter of transmittal,  the Paying
Agent  will  promptly  pay  to  the  holder  of  the   Certificate   the  Merger
Consideration deliverable in respect of such Certificate.  Until so surrendered,
each Certificate will be deemed,  for all corporate  purposes,  to evidence only
the right to receive upon such surrender the Merger  Consideration  to which the
Certificate  holder is entitled.  No interest will be paid or accrued in respect
of such cash payments.

         If the Merger Consideration (or any portion thereof) is to be delivered
to a person other than the person in whose name the Certificates  surrendered in
exchange  therefor are registered,  it will be a condition to the payment of the
Merger  Consideration that such Certificates be properly endorsed or accompanied
by appropriate stock powers and otherwise in proper form for transfer, that such
transfer otherwise be proper and that the person requesting such transfer pay to
the Paying Agent any transfer or other taxes  payable by reason of the foregoing
or establish to the  satisfaction  of the Paying Agent that such taxes have been
paid or are not required to be paid.

         STOCKHOLDERS  SHOULD NOT FORWARD THEIR CERTIFICATES TO THE PAYING AGENT
WITHOUT A LETTER OF TRANSMITTAL  AND SHOULD NOT RETURN THEIR  CERTIFICATES  WITH
THE ENCLOSED PROXY.

         At and after the  Effective  Time,  each holder of a  Certificate  will
cease to have any rights as a stockholder of Nalco, except for, in the case of a
holder  of a  Certificate,  the right to  surrender  his or her  Certificate  in
exchange for payment of the Merger Consideration or, in the case of a Dissenting
Stockholder,  to  perfect  his or her right to  receive  payment  for his or her
Shares  pursuant  to DGCL and the Merger  Agreement  if such  Holder has validly
perfected and not  withdrawn his or her right to receive  payment for his or her
Shares,  and no transfer of Shares will be made on the stock  transfer  books of
the surviving corporation in the Merger. Certificates presented to the surviving
corporation  in the  Merger  after  the  Effective  Time  will be  canceled  and
exchanged for cash as described above.

         Promptly  following  the date which is six months  after the  Effective
Time,  the Paying Agent will return to the surviving  corporation  in the Merger
all cash,  certificates and other  instruments in its possession that constitute
any portion of the Payment Fund, and the Paying  Agent's duties will  terminate.
Thereafter,  each holder of a Certificate may surrender such  Certificate to the
surviving  corporation  in the  Merger  and  (subject  to  applicable  abandoned
property,  escheat and similar  laws)  receive in exchange  therefor  the Merger
Consideration,  without  interest,  but will have no greater  rights against the
surviving  corporation  in the Merger or Suez  Lyonnaise than may be accorded to
general  creditors of the surviving  corporation in the Merger or Suez Lyonnaise
under applicable law.  Notwithstanding the foregoing,  none of the Paying Agent,
Nalco,  Suez  Lyonnaise  or H2O  will be  liable  to a  Holder  for  any  Merger
Consideration  delivered to a public official  pursuant to applicable  abandoned
property, escheat and similar laws.

                        RIGHTS OF DISSENTING STOCKHOLDERS

         Pursuant  to the DGCL,  any record  Holder on the  Record  Date (i) who
properly  files a demand for appraisal in writing prior to the vote taken at the
Special  Meeting,  (ii) who  continuously  holds  his or her  Shares  until  the
Effective Time, (iii) whose Shares are not voted in favor of the Merger and (iv)
otherwise  complies with the requirements of Section 262 of DGCL (Section "262")
shall be  entitled  to an  appraisal  by the  Delaware  Court of  Chancery  (the
"Delaware Court") of the fair value of his or her Shares.

         SECTION  262 IS  REPRINTED  IN ITS  ENTIRETY  AS ANNEX B TO THIS  PROXY
STATEMENT.  THE  FOLLOWING  DISCUSSION  IS NOT A COMPLETE  STATEMENT  OF THE LAW
RELATING TO  APPRAISAL  RIGHTS AND IS  QUALIFIED IN ITS ENTIRETY BY REFERENCE TO
ANNEX B. THIS DISCUSSION AND ANNEX B SHOULD BE REVIEWED  CAREFULLY BY ANY HOLDER
WHO WISHES TO EXERCISE STATUTORY  APPRAISAL RIGHTS OR WHO WISHES TO PRESERVE THE
RIGHT TO DO SO, AS FAILURE TO COMPLY  WITH THE  PROCEDURES  SET FORTH  HEREIN OR
THEREIN WILL RESULT IN THE LOSS OF APPRAISAL RIGHTS.

         Under Section 262,  where a merger is to be submitted for approval at a
meeting of stockholders,  as in the Special Meeting, not less than 20 days prior
to the meeting each  constituent  corporation must notify each of the holders of
its stock for which  appraisal  rights are available that such appraisal  rights
are  available and include in each such notice a copy of Section 262. This Proxy
Statement shall constitute such notice to the record Holders of Shares.

         Our voting  stockholders  who desire to exercise their appraisal rights
must not vote in favor of the Merger  Agreement or the Merger and must deliver a
separate  written  demand  for  appraisal  to  us  prior  to  the  vote  by  our
stockholders on the Merger Agreement and the Merger. A stockholder who signs and
returns a proxy without expressly directing, by checking the applicable boxes on
the reverse side of the proxy card enclosed herewith,  that his or her shares of
Common Stock be voted  against the proposal or that an  abstention be registered
with  respect  to his or her  shares  of  Common  Stock in  connection  with the
proposal will  effectively have thereby waived his or her appraisal rights as to
those  shares of Common  Stock  because,  in the  absence  of  express  contrary
instructions,  such  shares  of  Common  Stock  will be  voted  in  favor of the
proposal. (See "THE SPECIAL MEETING--Vote  Required;  Revocability of Proxies".)
Accordingly,  a stockholder who desires to perfect appraisal rights with respect
to any of his or her shares of Common Stock must, as one of the procedural steps
involved in such perfection, either (i) refrain from executing and returning the
enclosed  proxy  card and from  voting  in person  in favor of the  proposal  to
approve the Merger Agreement or (ii) check either the "against" or the "abstain"
box next to the proposal on such card or  affirmatively  vote in person  against
the proposal or register in person an abstention with respect thereto.  A demand
for appraisal must be executed by or on behalf of the  stockholder of record and
must  reasonably  inform Nalco of the identity of the  stockholder of record and
that such record  stockholder  intends thereby to demand appraisal of the shares
of Common Stock. A person having a beneficial interest in shares of Common Stock
that are  held of  record  in the  name of  another  person,  such as a  broker,
fiduciary  or other  nominee,  must act  promptly to cause the record  holder to
follow the steps  summarized  herein  properly and in a timely manner to perfect
whatever appraisal rights are available. If the shares of Common Stock are owned
of record by a person  other  than the  beneficial  owner,  including  a broker,
fiduciary  (such as a trustee,  guardian or  custodian) or other  nominee,  such
demand  must be  executed  by or for the record  owner.  If the shares of Common
Stock are owned of record by more  than one  person,  as in a joint  tenancy  or
tenancy in common,  such demand must be executed by or for all joint owners.  An
authorized agent,  including an agent for two or more joint owners,  may execute
the demand for appraisal for a stockholder  of record;  however,  the agent must
identify the record owner and  expressly  disclose the fact that,  in exercising
the demand, such person is acting as agent for the record owner.

         A record owner, such as a broker, fiduciary or other nominee, who holds
shares of Common Stock as a nominee for others,  may exercise  appraisal  rights
with  respect to the shares held for all or less than all  beneficial  owners of
shares as to which such person is the record  owner.  In such case,  the written
demand  must set forth the number of shares  covered by such  demand.  Where the
number of shares is not expressly  stated,  the demand will be presumed to cover
all shares of common stock outstanding in the name of such record owner.

         A stockholder who elects to exercise  appraisal  rights,  if available,
should  deliver his or her written  demand before the Special  Meeting to: Nalco
Chemical  Company,  One Nalco Center,  Naperville,  Illinois  60563,  Attention:
Corporate Secretary.

         The written demand for appraisal should specify the stockholder's  name
and mailing  address,  the number of shares of Common Stock owned,  and that the
stockholder is thereby demanding appraisal of his or her shares. A proxy or vote
against the Merger will not by itself constitute such a demand.  Within ten days
after  the  Effective  Time,  the  Surviving   Corporation   shall  notify  each
stockholder  who has  complied  with  Section  262 and who has not  voted for or
consented to the Merger of the date the Merger became effective.

         Within  120  days  after  the  Effective  Time,  either  the  Surviving
Corporation or any stockholder who has complied with the requirements of Section
262 and who is otherwise entitled to appraisal rights may file a petition in the
Delaware Court, with a copy served on the Surviving Corporation in the case of a
petition filed by a stockholder,  demanding a determination of the fair value of
the shares of all dissenting  stockholders.  Accordingly,  our  stockholders who
desire to have their shares  appraised  should initiate any petitions  necessary
for the perfection of their appraisal  rights within the time periods and in the
manner  prescribed  in Section  262.  Suez  Lyonnaise  does not have any present
intentions as to whether it would file, or would cause the Surviving Corporation
to file, any such petition in the event a stockholder makes a written demand for
appraisal  rights.  Within 120 days after the Effective Time of the Merger,  any
stockholder  who has  theretofore  complied  with the  applicable  provisions of
Section  262  will be  entitled,  upon  written  request,  to  receive  from the
Surviving  Corporation a statement  setting forth the aggregate number of Shares
not voted in favor of the Merger Agreement and with respect to which we received
demands for appraisal,  and the aggregate number of holders of such Shares. Such
written  statement shall be mailed to the  stockholder  within 10 days after the
written request  therefor has been received by the surviving  corporation in the
Merger.

         If a petition for an  appraisal is timely filed and assuming  appraisal
rights are available,  at the hearing on such petition,  the Delaware Court will
determine  which  stockholders,  if any, are entitled to appraisal  rights.  The
Delaware Court may require the  stockholders  who have demanded an appraisal for
their  shares and who hold stock  represented  by  certificates  to submit their
certificates  of stock to the Register in Chancery  for notation  thereon of the
pendency of the appraisal  proceedings;  and if any stockholder  fails to comply
with such  direction,  the Delaware Court may dismiss the proceedings as to such
stockholder.  Where  proceedings  are not  dismissed,  the  Delaware  Court will
appraise the shares of common stock owned by such stockholders,  determining the
fair value of such shares  exclusive  of any element of value  arising  from the
accomplishment  or  expectation  of the  merger,  together  with a fair  rate of
interest, if any, to be paid upon the amount determined to be the fair value. In
such event, the Delaware Court's appraisal may be more than, less than, or equal
to the merger consideration. In determining fair value, the Delaware Court is to
take into  account all  relevant  factors.  In relevant  case law,  the Delaware
Supreme Court discussed the factors that could be considered in determining fair
value in an appraisal proceeding, stating that "proof of value by any techniques
or methods which are generally considered  acceptable in the financial community
and otherwise  admissible in court" should be  considered,  and that "fair price
obviously requires  consideration of all relevant factors involving the value of
a company." The Delaware Supreme Court stated that in making this  determination
of fair value the court must  consider  market  value,  asset value,  dividends,
earnings   prospects,   the  nature  of  the  enterprise  and  any  other  facts
ascertainable  as of the date of the merger that throw light on future prospects
of the merged corporation. The Delaware Supreme Court also stated that "elements
of future  value,  including  the nature of the  enterprise,  which are known or
susceptible  of  proof  as of the  date of the  merger  and not the  product  of
speculation,  may be considered." Section 262, however, provides that fair value
is to be "exclusive of any element of value arising from the  accomplishment  or
expectation of the merger."

         The Delaware  Court will then direct the Surviving  Corporation  to pay
the fair value of the  Dissenting  Shares,  together with any  interest,  to the
stockholders  entitled to  payment.  Payment  will be made when the  Stockholder
surrenders the certificates to the Surviving Corporation.

         The cost of the appraisal  proceeding may be determined by the Delaware
Court and taxed against the parties as the Delaware Court deems equitable in the
circumstances.  Upon application of a dissenting stockholder, the Delaware Court
may order  that all or a portion  of the  expenses  incurred  by any  dissenting
stockholder  in connection  with the appraisal  proceeding,  including,  without
limitation,  reasonable attorney's fees and the fees and expenses of experts, be
charged pro rata against the value of all shares of stock entitled to appraisal.

         Any Holder of Shares who has duly demanded appraisal in compliance with
Section  262 will not,  after the  Effective  Time,  be entitled to vote for any
purpose any Shares subject to such demand or to receive  payment of dividends or
other  distributions  on such  Shares,  except for  dividends  or  distributions
payable to stockholders of record at a date prior to the Effective Time.

         Any stockholder may withdraw such stockholder's demand for appraisal by
delivering  to the  Surviving  Corporation  a written  withdrawal  of his or her
demand for appraisal and an acceptance of the Merger Consideration,  except that
(i) any withdrawal  made more than 60 days after the Effective Time will require
written approval of the Surviving Corporation,  and (ii) no appraisal proceeding
in the  Delaware  Court shall be  dismissed  as to any  stockholder  without the
approval of the Delaware Court,  and such approval may be conditioned  upon such
terms as the Delaware Court deems just.

         ANY  HOLDER WHO FAILS TO COMPLY FULLY WITH THE STATUTORY  PROCEDURE SET
FORTH IN SECTION 262 WILL FORFEIT HIS OR HER RIGHTS OF DISSENT.

                            EXPENSES OF SOLICITATION

         We will  bear  the  cost of  preparing,  mailing,  and  soliciting  the
enclosed  form of  consents.  In  addition  to our  solicitations  by mail,  our
directors,  officers,  and regular employees may solicit consents personally and
by  telephone,  facsimile,  or other  means,  for  which  they will  receive  no
compensation in addition to their normal compensation. Arrangements will also be
made with brokerage houses and other custodians,  nominees,  and fiduciaries for
the forwarding of solicitation material to the beneficial owners of common stock
held of record by such persons,  and we may reimburse them for their  reasonable
out-of-pocket and clerical expenses.

                         INDEPENDENT PUBLIC ACCOUNTANTS

         Our consolidated  financial statements as of December 31, 1998, and for
each of the years in the three-year period ended December 31, 1998, incorporated
by reference,  have been audited by  PricewaterhouseCoopers,  independent public
accountants, as stated in their report.

                              AVAILABLE INFORMATION

         We are  subject  to the  informational  reporting  requirements  of the
Securities  Exchange Act of 1934 as amended and, in accordance  therewith,  file
reports, proxy statements and other information with the Securities and Exchange
Commission.  Such  reports,  proxy  statements  and  other  information  can  be
inspected and copies made at the Public  Reference  Room of the  Securities  and
Exchange Commission at 450 Fifth Street,  N.W.,  Washington,  D.C. 20549 and the
Securities and Exchange  Commission's  regional offices at 7 World Trade Center,
New York,  New York  10048 and  Northwestern  Atrium  Center,  500 West  Madison
Street, Suite 1400, Chicago, Illinois 60661. Copies of such material can also be
obtained  from the Public  Reference  Section  of the  Securities  and  Exchange
Commission at its Washington address at prescribed rates.

         Statements  contained  in  this  Proxy  Statement  or in  any  document
incorporated herein by reference regarding the contents of any contract or other
document are not  necessarily  complete and each such  statement is qualified in
its entirety by reference to such contract or other document filed as an exhibit
with the Securities and Exchange Commission.

         IF YOU WOULD LIKE TO REQUEST  DOCUMENTS  FROM US, PLEASE DO SO AT LEAST
FIVE  BUSINESS  DAYS BEFORE THE DATE OF THE SPECIAL  MEETING IN ORDER TO RECEIVE
TIMELY DELIVERY OF SUCH DOCUMENTS.

         You should rely only on the  information  contained or  incorporated by
reference in this document to vote your shares at the Special  Meeting.  We have
not  authorized  anyone to provide you with  information  that is different from
what is contained in this  document.  This document is dated  November 12, 1999.
You  should  not assume  that the  information  contained  in this  document  is
accurate as of any date other than that date,  and the mailing of this  document
to  stockholders  does not create any  implication  to the contrary.  This Proxy
Statement  does not  constitute a  solicitation  of a proxy in any  jurisdiction
where,  or to or from any  person to whom,  it is  unlawful  to make such  proxy
solicitation in such jurisdiction.

                      INFORMATION INCORPORATED BY REFERENCE

         Our Annual Report on Form 10-K for the year ended December 31, 1998 and
our Quarterly  Report on Form 10-Q for the quarter ended [June 30],  1999,  each
filed by us with the Securities and Exchange  Commission are hereby incorporated
by  reference  into this Proxy  Statement.  Our 10-K and 10-Q are not  presented
herein or delivered herewith,  but are available (without exhibits,  unless such
exhibits  are  specifically  incorporated  herein by  reference)  to any person,
including  any  beneficial  owner,  to whom this Proxy  Statement is  delivered,
without charge,  upon written request  directed to Nalco Chemical  Company,  One
Nalco Center, Naperville, Illinois 60563, Attention: Corporate Secretary. Copies
of our 10-K and 10-Q so  requested  will be sent,  within  one  business  day of
receipt of such request, by first class mail, postage paid.

         All documents we file pursuant to Section 13(a),  13(c), 14 or 15(d) of
the Exchange Act after the date of this Proxy Statement and prior to the date of
the Special  Meeting  shall be deemed to be  incorporated  by  reference in this
Proxy  Statement and to be a part hereof from the respective  dates of filing of
such documents. Any statement contained in this Proxy Statement or in a document
incorporated or deemed to be incorporated by reference herein shall be deemed to
be modified or  superseded  for  purposes of this Proxy  Statement to the extent
that a statement contained in any subsequently filed document that also is or is
deemed to be  incorporated  by  reference  herein  modifies or  supersedes  such
statement.  Any such  statement so modified or  superseded  shall not be deemed,
except  as so  modified  or  superseded,  to  constitute  a part of  this  Proxy
Statement.

                             ______________________


November __, 1999





<PAGE>

                                                                      APPENDIX A


                                MERGER AGREEMENT

                                    [TO COME]



<PAGE>

                                                                      APPENDIX B

                           SECTION 262 OF THE DELAWARE
                            GENERAL CORPORATIONS LAW

          APPRAISAL  RIGHTS.  -- (a) Any  stockholder  of a corporation  of this
State who holds  shares of stock on the date of the making of a demand  pursuant
to subsection (d) of this section with respect to such shares,  who continuously
holds such shares through the effective date of the merger or consolidation, who
has otherwise  complied with  subsection (d) of this section and who has neither
voted in favor of the merger or consolidation  nor consented  thereto in writing
pursuant to ss. 228 of this title shall be entitled to an appraisal by the Court
of  Chancery  of the fair value of the  stockholder's  shares of stock under the
circumstances  described in subsections (b) and (c) of this section.  As used in
this  section,  the word  "stockholder"  means a holder  of record of stock in a
stock  corporation  and also a member of record of a nonstock  corporation;  the
words  "stock" and "share"  mean and include what is  ordinarily  meant by those
words and also  membership  or  membership  interest  of a member of a  nonstock
corporation;  and  the  words  "depository  receipt"  mean a  receipt  or  other
instrument issued by a depository representing an interest in one or more shares
or fractions thereof, solely of stock of a corporation, which stock is deposited
with the depository.

          (b) Appraisal rights shall be available for the shares of any class or
series of stock of a constituent  corporation in a merger or consolidation to be
effected  pursuant to ss. 251 (other than a merger effected  pursuant to ss. 251
(g) of this  title),  ss. 252,  ss. 254, ss. 257, ss. 258, ss. 263 or ss. 264 of
this title:

          (1)  Provided,  however,  that no appraisal  rights under this section
     shall be  available  for the shares of any class or series of stock,  which
     stock, or depository  receipts in respect thereof, at the record date fixed
     to determine the stockholders  entitled to receive notice of and to vote at
     the  meeting  of  stockholders  to act  upon the  agreement  of  merger  or
     consolidation,  were either (i) listed on a national securities exchange or
     designated as a national market system security on an interdealer quotation
     system by the National Association of Securities Dealers, Inc. or (ii) held
     of  record  by more  than  2,000  holders;  and  further  provided  that no
     appraisal  rights  shall  be  available  for any  shares  of  stock  of the
     constituent  corporation  surviving  a merger if the merger did not require
     for its approval the vote of the stockholders of the surviving  corporation
     as provided in subsection (f) of ss. 251 of this title.

          (2) Notwithstanding paragraph (1) of this subsection, appraisal rights
     under this section shall be available for the shares of any class or series
     of stock of a constituent  corporation if the holders  thereof are required
     by the terms of an agreement of merger or consolidation  pursuant to ss.ss.
     251, 252, 254, 257, 258, 263 and 264 of this title to accept for such stock
     anything except:

               (a) Shares of stock of the  corporation  surviving  or  resulting
          from such merger or consolidation,  or depository  receipts in respect
          thereof;

               (b)  Shares  of stock of any  other  corporation,  or  depository
          receipts  in respect  thereof,  which  shares of stock (or  depository
          receipts in respect  thereof) or depository  receipts at the effective
          date of the  merger  or  consolidation  will  be  either  listed  on a
          national securities exchange or designated as a national market system
          security  on  an   interdealer   quotation   system  by  the  National
          Association of Securities Dealers, Inc. or held of record by more than
          2,000 holders;

               (c) Cash in lieu of fractional  shares or  fractional  depository
          receipts  described in the foregoing  subparagraphs  a. and b. of this
          paragraph; or

               (d) Any combination of the shares of stock,  depository  receipts
          and  cash  in lieu  of  fractional  shares  or  fractional  depository
          receipts  described in the  foregoing  subparagraphs  a., b. and c. of
          this paragraph.

          (3) In the event all of the stock of a subsidiary Delaware corporation
     party to a merger  effected under ss. 253 of this title is not owned by the
     parent corporation immediately prior to the merger,  appraisal rights shall
     be available for the shares of the subsidiary Delaware corporation.

          (c) Any corporation  may provide in its  certificate of  incorporation
that  appraisal  rights under this section  shall be available for the shares of
any class or series of its stock as a result of an amendment to its  certificate
of  incorporation,  any merger or  consolidation  in which the  corporation is a
constituent corporation or the sale of all or substantially all of the assets of
the corporation.  If the certificate of incorporation contains such a provision,
the procedures of this section, including those set forth in subsections (d) and
(e) of this section, shall apply as nearly as is practicable.

          (d) Appraisal rights shall be perfected as follows:

          (1) If a proposed merger or  consolidation  for which appraisal rights
     are  provided  under this  section is to be  submitted  for  approval  at a
     meeting of stockholders,  the  corporation,  not less than 20 days prior to
     the  meeting,  shall  notify each of its  stockholders  who was such on the
     record date for such  meeting  with  respect to shares for which  appraisal
     rights  are  available  pursuant  to  subsections  (b) or (c)  hereof  that
     appraisal  rights  are  available  for  any or all  of  the  shares  of the
     constituent  corporations,  and shall include in such notice a copy of this
     section.  Each  stockholder  electing  to  demand  the  appraisal  of  such
     stockholder's shares shall deliver to the corporation, before the taking of
     the vote on the merger or consolidation,  a written demand for appraisal of
     such stockholder's  shares. Such demand will be sufficient if it reasonably
     informs the  corporation  of the identity of the  stockholder  and that the
     stockholder  intends thereby to demand the appraisal of such  stockholder's
     shares.  A proxy or vote  against  the  merger or  consolidation  shall not
     constitute such a demand.  A stockholder  electing to take such action must
     do so by a separate written demand as herein provided. Within 10 days after
     the  effective  date of such  merger or  consolidation,  the  surviving  or
     resulting  corporation  shall notify each  stockholder of each  constituent
     corporation  who has  complied  with this  subsection  and has not voted in
     favor of or consented to the merger or  consolidation  of the date that the
     merger or consolidation has become effective; or

          (2) If the merger or consolidation was approved pursuant to ss. 228 or
     ss. 253 of this title,  each  constituent  corporation,  either  before the
     effective  date  of  the  merger  or   consolidation  or  within  ten  days
     thereafter,  shall  notify  each of the  holders  of any class or series of
     stock of such constituent  corporation who are entitled to appraisal rights
     of the approval of the merger or  consolidation  and that appraisal  rights
     are  available  for any or all  shares of such  class or series of stock of
     such  constituent  corporation,  and shall include in such notice a copy of
     this  section;  provided  that,  if the  notice  is given  on or after  the
     effective date of the merger or  consolidation,  such notice shall be given
     by the surviving or resulting  corporation to all such holders of any class
     or  series  of stock of a  constituent  corporation  that are  entitled  to
     appraisal rights.  Such notice may, and, if given on or after the effective
     date of the merger or  consolidation,  shall, also notify such stockholders
     of the  effective  date of the  merger or  consolidation.  Any  stockholder
     entitled to appraisal  rights may, within 20 days after the date of mailing
     of  such  notice,  demand  in  writing  from  the  surviving  or  resulting
     corporation  the  appraisal of such  holders'  shares.  Such demand will be
     sufficient if it reasonably  informs the corporation of the identity of the
     stockholder  and  that  the  stockholder  intends  thereby  to  demand  the
     appraisal  of  such  holder's  shares.   If  such  notice  did  not  notify
     stockholders of the effective date of the merger or  consolidation,  either
     (i) each such constituent corporation shall send a second notice before the
     effective date of the merger or consolidation notifying each of the holders
     of any class or series of stock of such  constituent  corporation  that are
     entitled  to  appraisal  rights  of the  effective  date of the  merger  or
     consolidation  or (ii) the  surviving or resulting  corporation  shall send
     such a second  notice to all such  holders  on or within 10 days after such
     effective date; provided,  however, that if such second notice is sent more
     than 20 days following the sending of the first notice,  such second notice
     need only be sent to each  stockholder who is entitled to appraisal  rights
     and who has demanded  appraisal of such holder's  shares in accordance with
     this subsection. An affidavit of the secretary or assistant secretary or of
     the  transfer  agent of the  corporation  that is  required  to give either
     notice that such notice has been given shall,  in the absence of fraud,  be
     prima  facie  evidence  of  the  facts  stated  therein.  For  purposes  of
     determining  the  stockholders  entitled  to receive  either  notice,  each
     constituent  corporation  may fix, in advance,  a record date that shall be
     not more than 10 days prior to the date the notice is given, provided, that
     if the  notice is given on or after  the  effective  date of the  merger or
     consolidation,  the record date shall be such effective  date. If no record
     date is fixed and the  notice is given  prior to the  effective  date,  the
     record date shall be the close of business  on the day next  preceding  the
     day on which the notice is given.

          (e)  Within  120  days  after  the  effective  date of the  merger  or
consolidation, the surviving or resulting corporation or any stockholder who has
complied with  subsections  (a) and (d) hereof and who is otherwise  entitled to
appraisal  rights,  may file a petition  in the Court of  Chancery  demanding  a
determination   of  the   value  of  the   stock   of  all  such   stockholders.
Notwithstanding  the  foregoing,  at any time within 60 days after the effective
date of the merger or  consolidation,  any  stockholder  shall have the right to
withdraw such stockholder's demand for appraisal and to accept the terms offered
upon the merger or  consolidation.  Within 120 days after the effective  date of
the  merger  or  consolidation,  any  stockholder  who  has  complied  with  the
requirements of subsections (a) and (d) hereof,  upon written request,  shall be
entitled to receive from the corporation  surviving the merger or resulting from
the  consolidation a statement  setting forth the aggregate number of shares not
voted in favor of the merger or consolidation  and with respect to which demands
for appraisal  have been  received and the  aggregate  number of holders of such
shares. Such written statement shall be mailed to the stockholder within 10 days
after such stockholder's written request for such a statement is received by the
surviving or resulting  corporation  or within 10 days after  expiration  of the
period for  delivery  of demands  for  appraisal  under  subsection  (d) hereof,
whichever is later.

          (f) Upon the filing of any such petition by a stockholder,  service of
a copy thereof shall be made upon the surviving or resulting corporation,  which
shall  within 20 days after such  service  file in the office of the Register in
Chancery in which the petition was filed a duly  verified  list  containing  the
names and  addresses of all  stockholders  who have  demanded  payment for their
shares and with whom  agreements  as to the value of their  shares have not been
reached by the  surviving or  resulting  corporation.  If the petition  shall be
filed  by  the  surviving  or  resulting  corporation,  the  petition  shall  be
accompanied  by such a duly  verified  list.  The  Register in  Chancery,  if so
ordered by the  Court,  shall  give  notice of the time and place  fixed for the
hearing of such  petition by  registered  or certified  mail to the surviving or
resulting corporation and to the stockholders shown on the list at the addresses
therein  stated.  Such notice shall also be given by 1 or more  publications  at
least  1  week  before  the  day of  the  hearing,  in a  newspaper  of  general
circulation published in the City of Wilmington, Delaware or such publication as
the Court deems  advisable.  The forms of the notices by mail and by publication
shall be  approved  by the Court,  and the costs  thereof  shall be borne by the
surviving or resulting corporation.

          (g) At the hearing on such  petition,  the Court shall  determine  the
stockholders who have complied with this section and who have become entitled to
appraisal  rights.  The Court may require the  stockholders who have demanded an
appraisal for their shares and who hold stock  represented  by  certificates  to
submit  their  certificates  of stock to the  Register in Chancery  for notation
thereon of the pendency of the  appraisal  proceedings;  and if any  stockholder
fails to comply with such direction,  the Court may dismiss the proceeding as to
such stockholder.

          (h) After determining the stockholders  entitled to an appraisal,  the
Court shall appraise the shares,  determining  their fair value exclusive of any
element of value arising from the accomplishment or expectation of the merger or
consolidation,  together  with a fair rate of interest,  if any, to be paid upon
the amount  determined to be the fair value. In determining such fair value, the
Court shall take into account all relevant factors. In determining the fair rate
of interest, the Court may consider all relevant factors,  including the rate of
interest which the surviving or resulting  corporation  would have had to pay to
borrow money  during the pendency of the  proceeding.  Upon  application  by the
surviving or resulting corporation or by any stockholder entitled to participate
in the appraisal proceeding, the Court may, in its discretion,  permit discovery
or other pretrial  proceedings and may proceed to trial upon the appraisal prior
to the final  determination  of the  stockholder  entitled to an appraisal.  Any
stockholder  whose name appears on the list filed by the  surviving or resulting
corporation  pursuant to  subsection  (f) of this section and who has  submitted
such stockholder's certificates of stock to the Register in Chancery, if such is
required,  may  participate  fully  in  all  proceedings  until  it  is  finally
determined that such  stockholder is not entitled to appraisal rights under this
section.

          (i) The  Court  shall  direct  the  payment  of the fair  value of the
shares,   together  with  interest,  if  any,  by  the  surviving  or  resulting
corporation  to the  stockholders  entitled  thereto.  Interest may be simple or
compound,  as the  Court  may  direct.  Payment  shall  be so made to each  such
stockholder,  in the case of holders of uncertificated stock forthwith,  and the
case of holders of shares  represented by certificates upon the surrender to the
corporation of the certificates  representing such stock. The Court's decree may
be enforced as other  decrees in the Court of Chancery may be enforced,  whether
such surviving or resulting corporation be a corporation of this State or of any
state.

          (j) The costs of the  proceeding  may be  determined  by the Court and
taxed upon the parties as the Court deems equitable in the  circumstances.  Upon
application  of a  stockholder,  the Court  may  order  all or a portion  of the
expenses   incurred  by  any   stockholder  in  connection  with  the  appraisal
proceeding,  including,  without limitation,  reasonable attorney's fees and the
fees and expenses of experts, to be charged pro rata against the value of all of
the shares entitled to an appraisal.

          (k) From and after the effective date of the merger or  consolidation,
no stockholder who has demanded  appraisal  rights as provided in subsection (d)
of this  section  shall be  entitled  to vote such  stock for any  purpose or to
receive  payment  of  dividends  or other  distributions  on the  stock  (except
dividends or other  distributions  payable to  stockholders  of record at a date
which is prior to the effective date of the merger or consolidation);  provided,
however;  that if no petition  for an  appraisal  shall be filed within the time
provided in subsection (e) of this section, or if such stockholder shall deliver
to  the  surviving  or  resulting  corporation  a  written  withdrawal  of  such
stockholder's  demand  for an  appraisal  and an  acceptance  of the  merger  or
consolidation,  either within 60 days after the effective  date of the merger or
consolidation  as provided in subsection (e) of this section or thereafter  with
the written approval of the  corporation,  then the right of such stockholder to
an appraisal shall cease. Notwithstanding the foregoing, no appraisal proceeding
in the Court of Chancery  shall be dismissed as to any  stockholder  without the
approval of the Court,  and such approval may be conditioned  upon such terms as
the Court deems just.

          (l) The shares of the surviving or resulting  corporation to which the
shares  of such  objecting  stockholders  would  have  been  converted  had they
assented to the merger or consolidation  shall have the status of authorized and
unissued shares of the surviving or resulting corporation.  (Last amended by Ch.
339, L. '98. Eff. 7-1-98.)



<PAGE>
                                                                      APPENDIX C


                          [OPINION OF GOLDMAN TO COME]



<PAGE>

                                TABLE OF CONTENTS


                                                                            Page
                                                                            ----

QUESTIONS AND ANSWERS ABOUT THE MERGER........................................7
FORWARD LOOKING STATEMENTS MAY PROVE INACCURATE...............................9
SUMMARY.......................................................................1
   The Special Meeting........................................................1
      Matters To Be Considered At The Special Meeting.........................1
      Record Date and Voting..................................................1
      Vote Required; Revocability of Proxies..................................1
   Solicitation of Proxies....................................................2
   Appraisal Rights...........................................................2
   Parties to the Merger......................................................2
      Nalco Chemical Company..................................................2
      Suez Lyonnaise des Eaux.................................................2
      H2O Acquisition Co......................................................2
   Recommendation of the Board of Directors...................................3
   Opinion of Financial Advisor...............................................3
   The Merger Agreement.......................................................3
   No Solicitation............................................................4
   Termination; Termination Fees..............................................4
   Regulatory Approvals.......................................................5
   Source and Amount of Funds.................................................5
   Interests of Certain Persons in the Merger.................................5
   Certain Tax Consequences...................................................5
   Security Ownership of Management and Certain Beneficial Owners.............6
   Market Prices of Common Stock..............................................6
   Selected Consolidated Financial Data.......................................6
THE SPECIAL MEETING...........................................................6
   Matters to be Considered at the Special Meeting............................6
   Record Date and Voting.....................................................7
   Vote Required; Revocability of Proxies.....................................8
   Solicitation of Proxies....................................................9
   Procedures for Exchange of Certificates....................................9
THE PARTIES TO THE TRANSACTION................................................9
   Nalco Chemical Company.....................................................9
      Comparative Market Price Data..........................................10
      Dividends..............................................................10
      Summary Consolidated Financial Information.............................11
      Certain Projections of Future Operating Results........................13
   Suez Lyonnaise des Eaux...................................................13
   H2O Acquisition Co........................................................14
THE MERGER...................................................................14
   Background of the Merger..................................................15
   Reasons for the Merger....................................................17
   Recommendation of the Board of Directors..................................20
   Opinion of Financial Advisor..............................................20
   Certain Effects of the Merger.............................................21
   Rights Agreement..........................................................22
   Accounting Treatment of the Merger........................................22
   Regulatory Approvals......................................................22
THE MERGER AGREEMENT.........................................................23
   Effective Time of the Merger..............................................23
   Conditions to Consummation of the Merger..................................23
   No Solicitation Of Other Offers...........................................24
   Representations and Warranties............................................25
   Covenants.................................................................25
   Termination of the Merger Agreement.......................................27
   Termination Fees; Expenses................................................29
   Amendments to the Merger Agreement........................................30
Interests of Certain Persons in the Merger...................................31
   Employment Agreements.....................................................31
   Indemnification and Insurance.............................................32
MATERIAL U.S. FEDERAL INCOME TAX CONSEQUENCES OF
    THE MERGER TO U.S. HOLDERS...............................................32
FINANCING OF THE MERGER......................................................34
PLANS OR PROPOSALS AFTER THE MERGER..........................................34
PROCEDURES FOR EXCHANGE OF CERTIFICATES......................................35
RIGHTS OF DISSENTING STOCKHOLDERS............................................36
EXPENSES OF SOLICITATION.....................................................40
INDEPENDENT PUBLIC ACCOUNTANTS...............................................40
AVAILABLE INFORMATION........................................................40
INFORMATION INCORPORATED BY REFERENCE........................................41


EXHIBIT A  -  Merger Agreement
EXHIBIT B  -  Section 262 of Delaware General Corporation Law
EXHIBIT C  -  Opinion of Goldman, Sachs & Co.




© 2022 IncJournal is not affiliated with or endorsed by the U.S. Securities and Exchange Commission