UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C.  20549
                                  SCHEDULE l3D
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 4)*


                               CLEAN HARBORS, INC.
--------------------------------------------------------------------------------
                                (Name of Issuer)

                     Common Stock, par value $0.01 per share
--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    184496107
--------------------------------------------------------------------------------
                                 (CUSIP Number)
                                                     with a copy to:
     Stephen Feinberg                                Robert G. Minion, Esq.
     299 Park Avenue                                 Lowenstein Sandler PC
     22nd Floor                                      65 Livingston Avenue
     New York, New York  10171                       Roseland, New Jersey  07068
     (212) 421-2600                                  (973) 597-2424
--------------------------------------------------------------------------------
                 (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  June 30, 2004
--------------------------------------------------------------------------------
             (Date of Event which Requires Filing of this Statement)


If the filing person has previously  filed a statement on Schedule l3G to report
the  acquisition  that is the subject of this  Schedule  13D, and is filing this
schedule because of Sections 240.13d-1(e),  240.13d-1(f) or 240.13d-1(g),  check
the following box. [ ]

Note:  Schedules  filed in paper format shall include a signed original and five
copies of the schedule,  including all exhibits. See Section 240.13d-7 for other
parties to whom copies are to be sent.

*The  remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for  any  subsequent   amendment   containing   information  which  would  alter
disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed
to be "filed" for the purpose of Section 18 of the  Securities  Exchange  Act of
1934 ("Act") or otherwise  subject to the liabilities of that section of the Act
but  shall be  subject  to all other  provisions  of the Act  (however,  see the
Notes).





Cusip No.    184496107
--------------------------------------------------------------------------------
  1)   Names of Reporting Persons.  I.R.S. Identification Nos. of  above persons
       (entities only):

                                Stephen Feinberg
--------------------------------------------------------------------------------
  2)   Check the Appropriate Box if a Member of a Group (See Instructions):
             (a)                    Not
             (b)                 Applicable
--------------------------------------------------------------------------------
  3)   SEC Use Only

--------------------------------------------------------------------------------
  4)   Source of Funds (See Instructions):  WC
--------------------------------------------------------------------------------
  5)   Check if  Disclosure of  Legal Proceedings is  Required Pursuant to Items
       2(d) or 2(e):         Not Applicable
--------------------------------------------------------------------------------
  6)   Citizenship or Place of Organization:    United States
--------------------------------------------------------------------------------
        Number of                        7) Sole Voting Power:            *
                                            ------------------------------------
        Shares Beneficially              8) Shared Voting Power:          *
                                            ------------------------------------
        Owned by
        Each Reporting                   9) Sole Dispositive Power:       *
                                            ------------------------------------
        Person With                     10) Shared Dispositive Power:     *
                                            ------------------------------------
--------------------------------------------------------------------------------
  11)  Aggregate Amount Beneficially Owned by Each Reporting Person:
                   3,165,650*
--------------------------------------------------------------------------------
  12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares  (See
       Instructions):      Not Applicable
--------------------------------------------------------------------------------
  13)  Percent of Class Represented by Amount in Row (11):     19.9%*
--------------------------------------------------------------------------------
  14)  Type of Reporting Person (See Instructions):       IA, IN
--------------------------------------------------------------------------------
*  Cerberus CH LLC, a Delaware limited liability company ("Cerberus CH"), is the
holder of warrants to purchase an  aggregate  of  1,859,250  shares  (subject to
adjustments in certain circumstances) of common stock, par value $0.01 per share
(the  "Shares"),  of Clean  Harbors,  Inc.,  a  Massachusetts  corporation  (the
"Company"). In addition, Cerberus Partners, L.P., a Delaware limited partnership
("Cerberus"),  is the holder of 195,000 Shares, Cerberus International,  Ltd., a
corporation  organized under the laws of the Bahamas  ("International"),  is the
holder of 543,100 Shares,  Cerberus Series Two Holdings, LLC, a Delaware limited
liability  company  ("Cerberus  Series Two"),  is the holder of 255,000  Shares,
Cerberus America Series One Holdings,  LLC, a Delaware limited liability company
("Cerberus America"),  is the holder of 50,800 Shares, and various other private
investment  funds (the "Funds") hold in the aggregate  262,500  Shares.  Stephen
Feinberg  possesses  sole  power  to vote  and  direct  the  disposition  of all
securities held by Cerberus CH,  Cerberus,  International,  Cerberus Series Two,
Cerberus  America and the Funds.  Thus, as of June 30, 2004, for the purposes of
Reg. Section 240.13d-3, Stephen Feinberg is deemed to beneficially own 3,165,650
Shares, or 19.9% of the Shares deemed issued and outstanding as of that date.





Item 2.   Identity and Background.
          -----------------------

          The person filing this statement is Stephen  Feinberg,  whose business
address is 299 Park Avenue,  22nd Floor, New York, New York 10171.  Mr. Feinberg
serves as (i) the managing member of Cerberus  Associates,  L.L.C., which is the
general  partner of Cerberus  Partners,  L.P.,  a Delaware  limited  partnership
("Cerberus"),  which is the  managing  member of  Cerberus  CH LLC,  a  Delaware
limited  liability  company  ("Cerberus  CH"),  and  (ii)  through  one or  more
intermediate  entities,  the investment  manager for each of Cerberus Series Two
Holdings,  LLC, a Delaware limited  liability  company  ("Cerberus Series Two"),
Cerberus America Series One Holdings,  LLC, a Delaware limited liability company
("Cerberus  America"),  Cerberus  International,  Ltd., a corporation  organized
under the laws of the  Bahamas  ("International"),  and  various  other  private
investment  funds (the "Funds").  Cerberus,  Cerberus CH,  Cerberus  Series Two,
Cerberus  America,  International and the Funds are engaged in the investment in
personal  property of all kinds,  including  but not  limited to capital  stock,
depository  receipts,   investment  companies,   mutual  funds,   subscriptions,
warrants,  bonds,  notes,  debentures,  options and other securities of whatever
kind and nature.  Mr.  Feinberg also provides  investment  management  and other
services for various other third parties.

          Mr. Feinberg  has never  been  convicted  in any  criminal  proceeding
(excluding traffic violations or similar misdemeanors),  nor has he been a party
to any civil proceeding  commenced before a judicial or  administrative  body of
competent  jurisdiction  as a  result  of which  he was or is now  subject  to a
judgment,  decree or final order enjoining future  violations of, or prohibiting
or mandating  activities subject to, federal or state securities laws or finding
any violation with respect to such laws. Mr. Feinberg is a citizen of the United
States.


Item 3.   Source and Amount of Funds or Other Consideration.
          -------------------------------------------------

          Pursuant to a Preferred Stock Redemption  Agreement,  dated as of June
30,  2004,  by and among the  Company,  Cerberus  CH and certain  other  parties
thereto (the "Redemption Agreement"),  on June 30, 2004, among other things, the
Company redeemed all of the shares of Series C Convertible  Preferred Stock, par
value $0.01 per share, of the Company (the "Preferred Shares"), held by Cerberus
CH in exchange for (a) cash in an amount equal to the sum of (i) the liquidation
preference of each such Preferred Share (including  accrued and unpaid dividends
thereon  through  and  including  the  date  and  time  of  the  closing  of the
transactions  contemplated  by the  Redemption  Agreement)  and (ii)  $14.50 per
Preferred  Share,  and (b) warrants to purchase an aggregate of 1,859,250 Shares
(subject to adjustments in certain circumstances).

          All funds used to purchase or acquire the securities of the Company by
Cerberus, Cerberus CH, Cerberus Series Two, Cerberus America,  International and
the Funds came  directly  from the assets of  Cerberus,  Cerberus  CH,  Cerberus
Series Two, Cerberus America,  International  and the Funds,  respectively.  See
Item 5 of this Schedule 13D Amendment No. 4 for further information.





Item 5.   Interest in Securities of the Issuer.
          ------------------------------------

          Based upon  information  provided by the Company,  as of June 14, 2004
there were  14,047,649  Shares  issued  and  outstanding.  As of June 30,  2004,
Cerberus CH is the holder of warrants to  purchase  an  aggregate  of  1,859,250
Shares (subject to adjustments in certain circumstances), Cerberus is the holder
of 195,000  Shares,  International  is the holder of  543,100  Shares,  Cerberus
Series Two is the holder of 255,000  Shares,  Cerberus  America is the holder of
50,800  Shares  and the Funds  hold in the  aggregate  262,500  Shares.  Stephen
Feinberg  possesses  sole  power  to vote  and  direct  the  disposition  of all
securities held by Cerberus CH,  Cerberus,  International,  Cerberus Series Two,
Cerberus  America and the Funds.  Thus, as of June 30, 2004, for the purposes of
Reg. Section 240.13d-3, Stephen Feinberg is deemed to beneficially own 3,165,650
Shares, or 19.9% of the Shares deemed issued and outstanding as of that date.

          During the sixty days prior to June 30, 2004, the only  transaction in
Shares,  or securities  convertible  into,  exercisable for or exchangeable  for
Shares,  by Mr. Feinberg or any person or entity controlled by him or any person
or  entity  for  which  he  possesses  voting  or  investment  control  over the
securities  thereof,  was the June 30, 2004  redemption  of all of the Preferred
Shares  pursuant to the Redemption  Agreement for (a) cash in an amount equal to
the  sum  of (i)  the  liquidation  preference  of  each  such  Preferred  Share
(including  accrued and unpaid dividends  thereon through and including the date
and time of the  closing  of the  transactions  contemplated  by the  Redemption
Agreement) and (ii) $14.50 per Preferred  Share, and (b) warrants to purchase an
aggregate of 1,859,250 Shares (subject to adjustments in certain circumstances),
as described in this Schedule 13D Amendment No. 4.


Item 6.   Contracts, Arrangements, Understandings or Relationships With Respect
          to Securities of the Issuer.
          ----------------------------------------------------------------------

          In connection with the redemption of the Preferred Shares, in addition
to the Redemption  Agreement which is attached as Exhibit 1 hereto,  Cerberus CH
entered into an Investors Rights Agreement,  dated as of June 30, 2004, pursuant
to which, among other things, the Company, Cerberus CH and certain other parties
agreed to the terms  pursuant to which (a) the  Company  shall  register,  among
other  securities,  the Shares issuable upon exercise of the warrants for resale
by the filing of a  registration  statement  with the  Securities  and  Exchange
Commission  pursuant  to the  Securities  Act of 1933,  as  amended,  as well as
perform various other  obligations and agreements  related to such  registration
and (b) Cerberus CH and certain other parties were granted  co-sale  rights with
respect to certain sales of Shares by one or more  shareholders  of the Company,
as more  particularly  set forth and described in the Investors Rights Agreement
attached as Exhibit 2 hereto.

          In  addition,  pursuant  to the  Redemption  Agreement,  the  Company,
Cerberus CH and certain other parties  terminated that certain  Investors Rights
Agreement,  dated as of September 6, 2002, by and among the Company, Cerberus CH
and certain other parties thereto.

          The  descriptions of the transactions and agreements set forth in this
Schedule  13D are  qualified  in their  entirety by  reference  to the  complete
agreements  governing such matters,  each of which are attached to this Schedule
13D as exhibits pursuant to Item 7 hereof.





          Except as otherwise  described  herein,  no  contracts,  arrangements,
understandings or similar  relationships exist with respect to the securities of
the Company between Stephen Feinberg and any person or entity.


Item 7.   Material to be Filed as Exhibits.
          --------------------------------

          1.   Preferred Stock Redemption Agreement, dated  as of June 30, 2004,
by  and among the  Company,  Cerberus CH  and certain  other parties  identified
therein.

          2.   Investors Rights  Agreement,  dated as of  June 30, 2004, by  and
among the Company, Cerberus CH and certain other parties identified therein.







                                    Signature

           After  reasonable inquiry and to the best of my knowledge and belief,
I certify that the information set forth in this statement is true, complete and
correct.


                                        July 1, 2004


                                        /s/ Stephen Feinberg
                                        ----------------------------------------
                                        Stephen Feinberg, on behalf of  Cerberus
                                        Associates, L.L.C., the  general partner
                                        of Cerberus Partners, L.P., the managing
                                        member of Cerberus CH LLC,  and Cerberus
                                        Series  Two   Holdings,  LLC,   Cerberus
                                        America   Series  One    Holdings,  LLC,
                                        Cerberus  International,  Ltd.  and  the
                                        Funds



      Attention: Intentional misstatements or omissions of fact constitute
                Federal criminal violations (See 18 U.S.C. 1001).






                                                               Execution Version


                      PREFERRED STOCK REDEMPTION AGREEMENT

          PREFERRED STOCK REDEMPTION  AGREEMENT (the  "Agreement"),  dated as of
June 30, 2004, by and among Clean Harbors,  Inc., a  Massachusetts  corporation,
with headquarters  located at 1501 Washington Street,  Braintree,  Massachusetts
02184 (the  "Company")  and the Investors  listed on the signature  pages hereto
(the "Investors").

          WHEREAS:

          A. The Company and certain of the Investors  entered into that certain
Securities  Purchase  Agreement,  dated as of September 6, 2002 (the "Securities
Purchase  Agreement"),  pursuant to which,  among other things,  such  Investors
purchased from the Company an aggregate of 25,000 shares of Series C Convertible
Preferred  Stock,  par value  $0.01 per share,  of the Company  (the  "Preferred
Stock")  which are  convertible  into  shares (the  "Conversion  Shares") of the
Company's Common Stock, par value $0.01 per share (the "Common Stock");

          B. Contemporaneously with the execution and delivery of the Securities
Purchase Agreement, the Company, certain of the Investors, Alan S. McKim and the
Trustees of the Alan S. McKim Children's Trust (collectively,  "McKim"), who are
significant  shareholders  of the  Company,  entered  into an  Investors  Rights
Agreement,  dated as of  September  6,  2002  (the  "Original  Investors  Rights
Agreement"),  pursuant to which,  among  other  things,  the  Company  agreed to
provide certain  registration rights with respect to the Registrable  Securities
(as defined in the Original Investors Rights Agreement) under the Securities Act
of 1933, as amended (the "1933 Act"), and the rules and regulations  promulgated
thereunder, and applicable state securities, laws and McKim, among other things,
agreed to grant such  Investors  certain  rights to tag-along to sales of Common
Stock by McKim;

          C. The  Company  and all of the  Investors  desire to enter  into this
Agreement,  pursuant to which,  among other things, the Company will redeem each
share of  Preferred  Stock held by the  Investors in exchange for (a) cash in an
amount equal to the sum of (i) the liquidation  preference of each such share of
Preferred  Stock  (including  accrued and unpaid  dividends  thereon through and
including  the Closing Date) and (ii) $14.50 per share of Preferred  Stock,  and
(b)  warrants  (the  "Warrants")  to acquire  shares of Common Stock in the form
attached  hereto as Exhibit A (each,  a "Warrant" and together with any warrants
issued in  replacement  or  substitution  thereof in  accordance  with the terms
thereof,  the "Warrants"),  which Warrants shall be exercisable for an aggregate
of  2,775,000  shares of Common  Stock  (subject  to  adjustment  in the  manner
provided in the Warrants);

          D. The Company and the Investors party thereto desire to terminate the
Original  Investors  Rights  Agreement  and the Company and all of the Investors
desire to enter  into a new  Investors  Rights  Agreement  in the form  attached
hereto as Exhibit B (the  "Investors  Rights  Agreement")  to provide for, among
other  things,  the  registration  of the shares of Common Stock  issuable  upon
exercise  of the  Warrants  and for  McKim,  among  other  things,  to grant the
Investors certain rights to tag-along to sales of Common Stock by McKim;

          E.  Capitalized  terms used herein and not  otherwise  defined  herein
shall have the respective  meanings ascribed to them in the Securities  Purchase
Agreement.


9588751.7




          NOW, THEREFORE, the Company and the Investors hereby agree as follows:

          1. REDEMPTION OF PREFERRED STOCK AND ISSUANCE OF WARRANTS.
             ------------------------------------------------------

               (a)  Redemption of  Preferred Stock.  Subject to satisfaction (or
waiver)  of the  conditions  set forth in  Sections 6 and 7, the  Company  shall
redeem from each Investor on the Closing Date (as defined  below) that number of
shares of  Preferred  Stock  set  forth  opposite  such  Investor's  name on the
Schedule of Investors (the "Closing").

               (b)  Closing Date. The date and time of the Closing (the "Closing
Date")  shall be 10:00  a.m.,  New York  Time,  on June  30,  2004,  subject  to
notification  of  satisfaction  (or waiver) of the conditions to the Closing set
forth in Sections 6 and 7 below (or such later date as is mutually  agreed to by
the Company and the  Investors).  The Closing shall occur on the Closing Date at
the offices of Schulte Roth & Zabel LLP, 919 Third  Avenue,  New York,  New York
10022.

               (c) Form of Payment.  On the Closing  Date,  (i) the  Company (A)
shall pay to each  Investor  for each  share of  Preferred  Stock  listed on the
Schedule of  Investors  an amount  equal to the sum of (x) the Stated  Value (as
defined and calculated in the  Certificate of Vote with respect to the Preferred
Stock (the  "Certificate")) with respect to each share of Preferred Stock, which
includes  the  amount  of all  Accrued  Dividend  Payments  (as  defined  in the
Certificate)  on each such share of Preferred  Stock  through and  including the
Closing Date and (y) an amount equal to $14.50 for each share of Preferred Stock
(collectively,  the "Per Share  Redemption  Price" and the  aggregate of the Per
Share  Redemption  Price to be paid to such Investor for all of such  Investor's
shares of  Preferred  Stock  being  redeemed  hereunder  is  referred to as such
Investor's  "Aggregate  Redemption Price"),  all as set forth on the Schedule of
Investors,  by wire transfer of immediately  available  funds in accordance with
such Investor's written wire instructions set forth on the Schedule of Investors
and (B) shall  issue and  deliver to such  Investor a Warrant  for the amount of
shares of Common Stock as set forth on the Schedule of Investors,  duly executed
on behalf of the  Company  and  registered  in the name of such  Investor or its
designee  and (ii) the  Investor  shall  deliver to the  Company  certificate(s)
representing the shares of Preferred Stock being redeemed hereby,  together with
duly executed stock transfer powers in favor of Company.

          2. REPRESENTATIONS AND WARRANTIES OF INVESTORS
             -------------------------------------------

          Each  Investor  represents  and  warrants  with respect to only itself
that:

               (a)  Organization and  Qualification.  Such Investor is an entity
duly  authorized  and validly  existing  under the laws of its  jurisdiction  of
organization  and has the requisite  power to carry on its business as it is now
being conducted and currently proposed to be conducted.

               (b)  Authorization; Enforcement; Validity. This Agreement and the
Investors Rights Agreement have been duly and validly  authorized,  executed and
delivered  on  behalf  of  such  Investor  and  are  legal,  valid  and  binding


                                     - 2 -



obligations  of such Investor,  enforceable  against such Investor in accordance
with their terms,  subject as to enforceability to general  principles of equity
and  to   applicable   bankruptcy,   insolvency,   reorganization,   moratorium,
liquidation  and other  similar laws  relating to, or affecting  generally,  the
enforcement of applicable creditors' rights and remedies.

               (c)  Investment Purpose.  Such Investor is acquiring the Warrants
for its own (or an  Affiliate's)  account  and not with a view  towards,  or for
resale in  connection  with,  the public sale or  distribution  thereof,  except
pursuant to sales registered or exempted under the 1933 Act; provided,  however,
that by making the representations  herein, such Investor does not agree to hold
any of the Warrants or any shares of Common Stock  issuable upon exercise of the
Warrants  (the  "Warrant  Shares")  for any minimum or other  specific  term and
reserves the right,  subject to compliance with applicable  securities  laws, to
dispose of the Warrants and the Warrant Shares at any time.

               (d)  Accredited Investor Status.  Such Investor is an "accredited
investor" as that term is defined in Rule 501(a)(3) of Regulation D ("Regulation
D") as promulgated by the United States Securities and Exchange  Commission (the
"SEC") under the 1933 Act.

               (e)  Reliance  on  Exemptions.  Such  Investor  understands  that
the Warrants are being offered and sold to it in reliance on specific exemptions
from the  registration  requirements  of the  United  States  federal  and state
securities  laws and that the Company is relying upon the truth and accuracy of,
and  such  Investor's   compliance   with,  the   representations,   warranties,
agreements, acknowledgments and understandings of such Investor set forth herein
in order to determine the availability of such exemptions and the eligibility of
such Investor to acquire the Warrants.

               (f)  Transfer or Resale. Such Investor understands that except as
provided in the Investors Rights Agreement,  the Warrants and the Warrant Shares
have not been  and are not  being  registered  under  the 1933 Act or any  state
securities laws, and may not be offered for sale, sold,  assigned or transferred
unless  (i)  subsequently  registered  thereunder,  (ii) such  Warrants  and the
Warrant  Shares to be sold,  assigned or  transferred  may be sold,  assigned or
transferred  pursuant  to an  exemption  from such  registration,  or (iii) such
Investor  provides the Company with  reasonable  assurance,  upon request by the
Company,  that  such  Warrants  and  Warrant  Shares  can be sold,  assigned  or
transferred  pursuant to Rule 144 promulgated under the 1933 Act (or a successor
rule thereto) ("Rule 144").

               (g) Legends.  Such Investor understands  that, until such time as
the sale of the Warrants and Warrant Shares have been registered  under the 1933
Act as contemplated by the Investors Rights  Agreement,  the stock  certificates
representing  the  Warrant  Shares,  except as set  forth  below,  shall  bear a
restrictive  legend in  substantially  the following  form (and a  stop-transfer
order may be placed against transfer of such stock certificates):

                    THE SECURITIES REPRESENTED BY THIS CERTIFICATE HAVE NOT BEEN
                    REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  OR
                    APPLICABLE  STATE SECURITIES LAWS. THE SECURITIES MAY NOT BE
                    OFFERED FOR SALE,  SOLD,  TRANSFERRED OR ASSIGNED (I) EXCEPT
                    PURSUANT TO (A) AN EFFECTIVE  REGISTRATION STATEMENT FOR THE


                                     - 3 -




                    SECURITIES UNDER THE SECURITIES ACT OF 1933, AS AMENDED,  OR
                    APPLICABLE STATE SECURITIES LAWS OR (B) PURSUANT TO RULE 144
                    UNDER SAID ACT OR (C) ANY OTHER EXEMPTION FROM  REGISTRATION
                    UNDER  THE  1933  ACT   RELATING  TO  THE   DISPOSITION   OF
                    SECURITIES.

               (h)  The legend set forth above  shall be removed and the Company
shall  issue a  certificate  without  such  legend to the holder of the  Warrant
Shares upon which it is stamped,  if, (i) such Warrant Shares are registered for
resale under the 1933 Act,  (ii) in  connection  with a sale  transaction,  such
holder  provides  the Company with an opinion of counsel,  in a form  reasonably
acceptable  to the  Company,  to the effect that a public  sale,  assignment  or
transfer of the Warrant Shares may be made without  registration  under the 1933
Act, or (iii) such holder provides the Company with  reasonable  assurances that
the Warrant  Shares can be sold pursuant to Rule 144 without any  restriction as
to the number of  securities  acquired as of a particular  date that can then be
immediately sold.

               (i) Such  Investor  is the  sole record  owner of  the shares  of
Preferred  Stock set forth such Investor's name on the Schedule of Investors and
has good and  marketable  title to such  shares,  free and clear of all  claims,
liens, encumbrances, restrictions and security interests of any kind whatsoever.
There are no outstanding options or agreements to which such Investor is a party
under  which any person or entity has the right,  present or future,  to acquire
from Investor such shares of Preferred Stock.

          3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY
             ---------------------------------------------

          The  Company  hereby  represents  and  warrants  to the  Investors  as
follows:

               (a)    Organization  and  Qualification.   The  Company  and  its
"Subsidiaries"  (which for purposes of this Agreement  means any entity in which
the Company,  directly or  indirectly,  owns 50% or more of the capital stock or
other  equity,  economic or similar  interests or owns capital stock or holds an
equity,  economic or similar  interest which  ownership  entitles the Company to
elect 50% or more of the board of  directors or similar  governing  body of such
entity,) are entities duly organized and validly existing in good standing under
the laws of the  jurisdiction  in  which  they  are  incorporated,  and have the
requisite corporate or other power and authorization to own their properties and
to carry on their business as now being  conducted and currently  proposed to be
conducted.  Each of the  Company and its  Subsidiaries  is duly  qualified  as a
foreign corporation to do business and is in good standing in every jurisdiction
in which its ownership of property or the nature of the business conducted by it
makes such qualification necessary,  except to the extent that the failure to be
so qualified or be in good standing would not have a Material Adverse Effect. As
used in this Agreement,  "Material  Adverse  Effect" means any material  adverse
effect on the business,  properties,  assets, operations, results of operations,
prospects or financial condition of the Company and its Subsidiaries, taken as a
whole, on the business,  assets (tangible and intangible),  accounts receivable,
rights, contracts, agreements,  instruments,  equipment, inventory, intellectual
property,   claims,   property   (real   or   otherwise),   licenses,   permits,
authorizations,  approvals,  bank  accounts,  lockbox  arrangements,  banks  and


                                     - 4 -



records and goodwill and liabilities, or on the transactions contemplated hereby
or by the agreements and instruments to be entered into in connection  herewith,
or on the authority or ability of the Company to perform its  obligations  under
this Agreement,  the Investors Rights Agreement,  the Irrevocable Transfer Agent
Instructions  (as  defined  in  Section 5) or the  Warrants  (collectively,  the
"Transaction Documents").

               (b)  Authorization;  Enforcement;  Validity.  The Company has the
requisite   corporate  power  and  authority  to  enter  into  and  perform  its
obligations  under this  Agreement  and the other  Transaction  Documents and to
issue the Warrants and the Warrant Shares issuable upon exercise of the Warrants
in accordance with the terms of the Warrants.  The execution and delivery of the
Transaction  Documents  by  the  Company  and  the  consummation  by it  of  the
transactions contemplated hereby and thereby, including, without limitation, the
issuance  and  reservation  for  issuance of the Warrant and the Warrant  Shares
issuable upon exercise  thereof have been duly authorized by the Company's Board
of Directors and no further consent or authorization is required by the Company,
its Board of Directors or its stockholders.  The Transaction Documents have been
duly executed and delivered by the Company. The Transaction Documents constitute
the legal, valid and binding obligations of the Company, enforceable against the
Company in accordance  with their terms,  except as such  enforceability  may be
limited by general  principles of equity or applicable  bankruptcy,  insolvency,
reorganization,   moratorium,  liquidation  or  similar  laws  relating  to,  or
affecting generally, the enforcement of creditors' rights and remedies.

               (c)  Capitalization.  The authorized capital stock of the Company
consists of (i) 20,000,000 shares of Common Stock, of which as of June 14, 2004,
14,047,649 shares were issued and outstanding,  no shares were held in treasury,
and no shares are issuable or reserved for issuance pursuant to securities other
than (A) the Warrants,  (B) 2,134,684 shares were reserved for issuance pursuant
to the  Company's  stock  option and  purchase  plans,  (C) 340,480  shares were
reserved  for  issuance  pursuant  to  conversion  of  the  Company's  Series  B
Convertible  Preferred Stock, par value $0.01 per share (the "Series B Preferred
Stock"),  and (D) the Conversion  Shares  reserved for issuance  pursuant to the
conversion  of the  Preferred  Stock (which  shares will cease to be so reserved
upon the  redemption  of the  Preferred  Stock),  and (ii)  2,000,000  shares of
preferred  stock,  of which (A)  894,585  shares have been  designated  Series A
Preferred Stock (of which none are issued and  outstanding),  (B) 156,416 shares
which have been  designated as Series B Preferred Stock (of which 112,000 shares
are issued and  outstanding),  and (C) 25,000 shares of the Preferred  Stock (of
which  none will  remain  issued  and  outstanding  upon the  redemption  of the
Preferred  Stock).  All of such  outstanding  shares have been, or upon issuance
will be,  validly  issued and are fully paid and  nonassessable.  Except for the
Preferred  Stock or as disclosed in Schedule  3(c),  (A) no Capital Stock of the
Company or any of its Subsidiaries are subject to preemptive rights or any other
similar  rights  (arising  under  Massachusetts  law, the Company's  Articles of
Organization  (defined  below) or By-laws  (defined  below) or any  agreement or
instrument  to which the  Company  or any of its  Subsidiaries  is a party or by
which the Company or any of its  Subsidiaries is bound) or any pledges,  claims,
liens,  mortgages,  charges,  encumbrances and security interests of any kind or
nature whatsoever  (collectively,  "Liens") granted or created by the Company or
any of its Subsidiaries;  (B) there are no outstanding debt securities issued by
the Company or any of its Subsidiaries which are convertible or exercisable into
or exchangeable for Capital Stock of the Company or any of its Subsidiaries; (C)
there are no outstanding options, warrants, scrip, rights to subscribe to, calls


                                     - 5 -




or commitments of any character  whatsoever relating to, or securities or rights
convertible into or exchangeable for, any Capital Stock of the Company or any of
its Subsidiaries, or contracts,  commitments,  understandings or arrangements by
which the  Company or any of its  Subsidiaries  is or may become  bound to issue
additional  Capital Stock of the Company or any of its  Subsidiaries or options,
warrants,  scrip,  rights to subscribe to, calls or commitments of any character
whatsoever  relating to, or securities or rights convertible into or exercisable
or  exchangeable   for,  any  Capital  Stock  of  the  Company  or  any  of  its
Subsidiaries;  (D) there  are no  agreements  or  arrangements  under  which the
Company or any of its  Subsidiaries  is obligated to register the sale of any of
their  Capital  Stock  under  the 1933 Act  (other  than  the  Investors  Rights
Agreement);  (E) there is no  outstanding  Capital  Stock or  instrument  of the
Company or any of its  Subsidiaries  which  contain  any  redemption  or similar
provisions,  and  there  are  no  contracts,   commitments,   understandings  or
arrangements  by which the Company or any of its  Subsidiaries  is or may become
bound to redeem any Capital  Stock or any debt security of the Company or any of
its Subsidiaries  (other than in this Agreement and the Warrants);  (F) there is
no  outstanding  Capital  Stock  or  instrument  of  the  Company  or any of its
Subsidiaries  containing  anti-dilution  or  similar  provisions  that  will  be
triggered by the issuance of the Warrants or the Warrant  Shares as described in
this Agreement;  and (G) the Company does not have any stock appreciation rights
or "phantom  stock" plans or agreements  or any similar plan or  agreement.  For
purposes of this  Agreement,  the term "Capital Stock" means (A) with respect to
any Person that is a corporation, any and all shares, interests,  participations
or other equivalents (however designated and whether or not voting) of corporate
stock, and (B) with respect to any Person that is not a corporation, any and all
partnership, membership or other equity interests of such Person.

               (d)   Issuance  of  Securities.   The  Warrants  have  been  duly
authorized and, upon issuance in accordance with the terms hereof,  shall be (i)
validly issued,  fully paid and  non-assessable,  (ii) free from all taxes,  and
Liens with respect to the issuance  thereof and (iii) entitled to the rights and
preferences set forth in the Warrants.  As of the Closing Date, 2,775,000 shares
of Common Stock will have been duly  authorized and reserved for issuance of the
Warrant  Shares.  Upon  exercise of the  Warrants in  accordance  with the terms
thereof, the Warrant Shares will be validly issued, fully paid and nonassessable
and free from all taxes,  liens and charges with  respect to the issue  thereof,
with the holders  being  entitled  to all rights  accorded to a holder of Common
Stock. Based in part on the  representations  made by the Investors in Section 2
hereof,  the issuance by the Company of the  Warrants and the Warrant  Shares is
exempt from registration under the 1933 Act.

               (e)  No Conflicts.  The  execution, delivery and  performance  of
the Transaction  Documents by the Company and the consummation by the Company of
the transactions contemplated hereby and thereby (including, without limitation,
the reservation for issuance and issuance of the Warrant Shares) do not and will
not (i) result in a violation  of the Articles of  Organization  or the By-laws;
(ii)  conflict  with,  or constitute a default (or an event which with notice or
lapse of time or both  would  become a  default)  under,  or give to others  any
rights of termination,  amendment, acceleration or cancellation of, any material
agreement,  indenture,  lease or instrument,  permit,  concession,  franchise or
license to which the Company or any of its Subsidiaries is a party; (iii) result
in a  violation  of  any  law,  rule,  regulation,  order,  judgment  or  decree
(including  federal and state  securities laws and regulations and the rules and
regulations  of the  Principal  Market (as  defined  below))  applicable  to the
Company  or any of its  Subsidiaries  or by which any  property  or asset of the
Company or any of its Subsidiaries is bound or affected. Neither the Company nor


                                     - 6 -




its Subsidiaries is in violation,  in any material  respect,  of any term of its
Articles  of  Organization  or its  By-laws or their  organizational  charter or
by-laws or other  constituent  documents,  respectively.  Except as specifically
contemplated  by this  Agreement and as required under the 1933 Act or under any
applicable  state  securities  laws,  the Company is not  required to obtain any
consent, authorization or order of, or make any filing or registration with, any
court or Governmental  Authority in order for it to execute,  deliver or perform
any of its obligations under or contemplated by the Transaction  Documents.  All
consents, authorizations, orders, filings and registrations which the Company is
required to obtain  pursuant to the  preceding  sentence  have been  obtained or
effected on or prior to the date hereof.  The Company and its  Subsidiaries  are
unaware  of any  facts or  circumstances  which  might  give  rise to any of the
foregoing.  The Company is not in violation of the listing  requirements  of the
Principal Market and has no actual knowledge of any facts which would reasonably
lead to delisting or suspension  of the Common Stock by the Principal  Market in
the foreseeable future.

               (f)  SEC Documents; Financial Statements.  Since January 1, 2002,
the  Company  has filed all  reports,  schedules,  forms,  statements  and other
documents  required  to be filed by it with the SEC  pursuant  to the  reporting
requirements of the Securities Exchange Act of 1934, as amended (the "1934 Act")
(all of the foregoing  filed prior to the date hereof and all exhibits  included
therein  and  financial   statements   and   schedules   thereto  and  documents
incorporated  by reference  therein  being  hereinafter  referred to as the "SEC
Documents"). As of the date of filing of such SEC Documents, such SEC Documents,
as it may have been subsequently amended by filings made by the Company with the
SEC  prior  to the date  hereof,  complied  in all  material  respects  with the
requirements  of the  1934  Act  and  the  rules  and  regulations  of  the  SEC
promulgated  thereunder  applicable  to the  SEC  Documents.  None  of  the  SEC
Documents,  as of the date filed and as they may have been subsequently  amended
by filings made by the Company with the SEC prior to the date hereof,  contained
any  untrue  statement  of a material  fact or omitted to state a material  fact
required  to be stated  therein  or  necessary  in order to make the  statements
therein,  in the light of the  circumstances  under  which they were  made,  not
misleading.  As of their  respective  dates,  the  financial  statements  of the
Company  included  in the SEC  Documents  complied  as to  form in all  material
respects with  applicable  accounting  requirements  and the published rules and
regulations of the SEC with respect thereto. Such financial statements have been
prepared  in  accordance   with  generally   accepted   accounting   principles,
consistently  applied,  during  the  periods  involved  (except  (i)  as  may be
otherwise  indicated in such financial  statements or the notes thereto, or (ii)
in the case of  unaudited  interim  statements,  to the extent  they may exclude
footnotes or may be condensed or summary  statements)  and fairly present in all
material  respects the  consolidated  financial  position of the Company and its
Subsidiaries  as of the dates thereof and the results of its operations and cash
flows for the periods then ended (subject,  in the case of unaudited statements,
to  normal  year-end  audit  adjustments).  None of the  Company  nor any of its
Subsidiaries have any material liabilities or obligations of any nature (whether
known  or  unknown,  and  whether  absolute,   accrued,   contingent,   matured,
liquidated,  unasserted or  otherwise) of a kind required by generally  accepted
accounting  principles ("GAAP") to be set forth on a financial statement that is
not  fully  and  adequately  reflected  or  reserved  against  in the  financial
statements contained in the Company's most recent Annual Report on Form 10-K and
Quarterly  Report on Form 10-Q filed with the SEC,  other than  liabilities  and
obligations  incurred since December 31, 2003 in the ordinary course of business
consistent with past practice that are not material in amount.


                                     - 7 -




               (g)  Full Disclosure.  No  other information  provided  by or  on
behalf  of the  Company  to the  Investors  which  is not  included  in the  SEC
Documents,  contains any untrue  statement of a material  fact or omits to state
any material  fact  necessary in order to make the  statements  therein,  in the
light of the  circumstances  under which they are or were made, not  misleading.
The  Company  is not  required  to file  and will  not be  required  to file any
agreement, note, lease, mortgage, deed or other instrument entered into prior to
the date  hereof  and to which the  Company or any  Subsidiary  is a party or by
which the Company or any Subsidiary is bound which has not been previously filed
as an exhibit to its reports filed with the SEC under the 1934 Act.

               (h)  Absence of Litigation. There is no action, suit, proceeding,
inquiry  or  investigation  before  or by any court or  Governmental  Authority,
self-regulatory organization or body pending or, to the knowledge of the Company
or any of its Subsidiaries,  threatened  against or affecting the Company or any
of  the  Company's  Subsidiaries  or  any of  the  Company's  or  the  Company's
Subsidiaries'  officers or  directors  in their  capacities  as such,  except as
expressly set forth in the SEC Documents,  which seeks injunctive or declaratory
relief against or affecting the Company, any of its Subsidiaries or any of their
respective  assets  or  properties  or,  with  respect  to the  Company  and its
Subsidiaries,  that if  adversely  determined,  could  have a  Material  Adverse
Effect.

               (i)  Compliance with Law.  Except for the  regulatory proceedings
arising under  environmental laws and regulations which are described in the SEC
Documents,  none of the Company or any of its  Subsidiaries  (i) has violated or
conducted  its  business  or  operations  in  violation  of, and has not used or
occupied its  properties or assets in material  violation of, any statute,  law,
ordinance, rule, regulation,  permit, order, writ, judgment,  injunction, decree
or award issued,  enacted or  promulgated by any  Governmental  Authority or any
arbitrator ("Legal  Requirements"),  (ii) to the Company's  knowledge,  has been
alleged  to be in  material  violation  of any Legal  Requirement,  or (iii) has
received any notice of any  violation or alleged  material  violation of, or any
citation for material non-compliance with, any Legal Requirements.

               (j)  Acknowledgment Regarding  Investor's Purchase of Securities.
The Company  acknowledges and agrees that each of the Investors is acting solely
in the capacity of an arm's  length  purchaser  with respect to the  Transaction
Documents  and the  transactions  contemplated  hereby and thereby.  The Company
further  acknowledges that each Investor is not acting as a financial advisor or
fiduciary  of the  Company  (or in any  similar  capacity)  with  respect to the
Transaction  Documents and the transactions  contemplated hereby and thereby and
any  advice  given  by  any  of  the  Investors  or  any  of  their   respective
representatives  or agents in connection with the Transaction  Documents and the
transactions  contemplated  hereby  and  thereby  is merely  incidental  to such
Investor's purchase of the Warrants.

               (k) No General Solicitation.  Neither the Company, nor any of its
affiliates,  nor any person  acting on its or their  behalf,  has engaged in any
form of general  solicitation  or general  advertising  (within  the  meaning of
Regulation  D under  the 1933 Act) in  connection  with the offer or sale of the
Warrants.

               (l) No Integrated Offering.  Neither the Company, nor  any of its
affiliates,  nor any  person  acting on its or their  behalf  has,  directly  or
indirectly,  made any offers or sales of any security or solicited any offers to
buy any security,  under  circumstances  that would require  registration of the


                                     - 8 -




issuance by the Company of any of the Warrants or Warrant  Shares under the 1933
Act or cause this  offering of the Warrants or Warrant  Shares to be  integrated
with  prior  offerings  by the  Company  for  purposes  of the  1933  Act or any
applicable stockholder approval provisions, including, without limitation, under
the rules and regulations of the Principal  Market,  nor will the Company or any
of its Subsidiaries take any action or steps that would require  registration of
the issuance by the Company of any of the Securities under the 1933 Act or cause
the  offering of the  Warrants  or Warrant  Shares to be  integrated  with other
offerings.

               (m)  Internal Accounting Controls.  The Company and  each of  its
Subsidiaries  maintain a system of internal  accounting  controls  sufficient to
provide  reasonable  assurance that (i)  transactions are executed in accordance
with  management's  general or specific  authorizations,  (ii)  transactions are
recorded  as  necessary  to  permit  preparation  of  financial   statements  in
conformity with generally accepted  accounting  principles and to maintain asset
accountability,  (iii) access to assets is  permitted  only in  accordance  with
management's   general  or  specific   authorization   and  (iv)  the   recorded
accountability  for assets is compared  with the existing  assets at  reasonable
intervals and appropriate action is taken with respect to any differences.

               (n)   Unconditional  Obligation.   The  Company  understands  and
acknowledges  that its  obligation to issue Warrant  Shares upon exercise of the
Warrants  in  accordance  with this  Agreement  and  Warrants  is, in each case,
absolute  and  unconditional  (except to the  extent set forth in the  Warrants)
regardless  of the dilutive  effect that such issuance may have on the ownership
interests of other stockholders of the Company.

               (o)  Application of Takeover  Protections.  The Company  and  its
board of directors have taken all necessary  action,  if any, in order to render
inapplicable any control share acquisition,  business  combination,  poison pill
(including  any  distribution  under a  rights  agreement),  including,  without
limitation,  pursuant to any  shareholder  rights plan or similar  agreement  or
instrument  or other  similar  anti-takeover  provision  under the  Articles  of
Organization  or the laws of the  state of its  incorporation  which is or could
become applicable to the Investors as a result of the transactions  contemplated
by this Agreement,  including, without limitation, the Company's issuance of the
Warrants and the Investors ownership of the Warrants or Warrant Shares.

               (p)  Shareholder's Rights Plan.  The Company  has not  adopted  a
shareholder  rights plan or similar  arrangement  relating to  accumulations  of
beneficial ownership of Common Stock or a change in control of the Company.

               (q)  Investment  Company Status.   The Company is  not, and  upon
consummation of the issuance of the Warrants or the Warrant Shares issuable upon
exercise  of the  Warrants,  will not be,  an  "investment  company,"  a company
controlled  by  an  "investment  company"  or  an  "affiliated  person"  of,  or
"promoter" or "principal underwriter" for, an "investment company" as such terms
are defined in the Investment Company Act of 1940, as amended.

               (r)  Broker's or Finder's  Commissions.  No  broker's or finder's
fee or  commission  will be payable by or on behalf of the Company or any of its
Subsidiaries  with  respect  to the  redemption  of the  Preferred  Stock or the
issuance and sale of the Warrants or Warrant Shares.


                                     - 9 -





          4.  CERTAIN COVENANTS
              -----------------

               (a) Reasonable Best Efforts.  Each party shall use its reasonable
best efforts to timely  satisfy each of the  conditions to be satisfied by it as
provided in Sections 6 and 7 of this Agreement.

               (b)  Financial Information.

                    (i) So long as any of the Warrants remain  outstanding,  the
          Company will provide the following information to each Investor:

                              (a) as soon as practicable and in any event within
                    45 days after the end of each  quarterly  period (other than
                    the last quarterly period) in each fiscal year, consolidated
                    statements  of  operations,  stockholders'  equity  and cash
                    flows of the  Company  and its  Subsidiaries  for the period
                    from the beginning of the current  fiscal year to the end of
                    such quarterly period,  and a consolidated  balance sheet of
                    the  Company  and  its  Subsidiaries  as at the  end of such
                    quarterly period,  setting forth in each case in comparative
                    form figures for the  corresponding  period in the preceding
                    fiscal year, and certified by the Chief Financial Officer of
                    the  Company,  subject to changes  resulting  from  year-end
                    adjustments;

                              (b) as soon as practicable and in any event within
                    90 days  after  the end of each  fiscal  year,  consolidated
                    statements  of  operations,  stockholders'  equity  and cash
                    flows of the Company and its Subsidiaries for such year, and
                    the  consolidated  balance  sheet  of the  Company  and  its
                    Subsidiaries  as at the end of such year,  setting  forth in
                    each case in  comparative  form  corresponding  consolidated
                    figures from the preceding annual audit and certified to the
                    Company by  independent  public  accountants  of  recognized
                    national standing selected by the Company;

                              (c)  promptly  after  their  becoming   available,
                    copies of all registration  statements and reports which the
                    Company or any of its Subsidiaries shall have filed with the
                    SEC or any national securities exchange or quotation system;

                              (d)  promptly  after the  mailing  thereof  to the
                    holders  of  Common  Stock  of the  Company,  copies  of all
                    financial  statements,   reports  and  proxy  statements  so
                    mailed;  and

                              (e)  true,  complete  and  correct  copies  of all
                    documents,  reports,  financial  data and other  information
                    that each Investor may reasonably request.

                    (ii) The Company shall permit the authorized representatives
          designated by each Investor to visit and inspect any of the properties
          of the Company or any of its  Subsidiaries,  including  their books of
          account,  and to discuss  their  affairs,  finances and accounts  with
          their  officers,  all at such times as each  Investor  may  reasonably
          request.

                    (iii) Each Investor shall have the right to consult with and
          advise  the  management  of the  Company  and its  Subsidiaries,  upon
          reasonable  notice  at  reasonable  times  from  time to time,  on all
          matters relating to the operation of the Company and its Subsidiaries.


                                     - 10 -





               (c)  Reservation of Shares.  The Company  shall take  all  action
necessary  to at all times have  authorized,  and  reserved  for the  purpose of
issuance of shares of Common  Stock  needed to provide  for the  issuance of the
Warrant  Shares  issuable upon  exercise of all  outstanding  Warrants  (without
regard to any  limitations  on  exercise)  in  accordance  with the terms of the
Warrants.

               (d)  Listing.  The Company  shall promptly  secure the listing of
all of the Registrable Securities (as defined in the Investors Rights Agreement)
upon each national  securities  exchange and automated quotation system, if any,
upon which shares of Common Stock are then listed (subject to official notice of
issuance) and shall maintain,  so long as any other shares of Common Stock shall
be so listed,  such  listing  of all  Registrable  Securities  from time to time
issuable under the terms of the Transaction  Documents and the Warrants. So long
as any Warrants or Warrant  Shares are  outstanding,  the Company shall maintain
the Common Stock's  authorization for quotation on the Nasdaq National Market or
for  listing on the New York  Stock  Exchange  (as  applicable,  the  "Principal
Market").  So long as any Warrants are  outstanding and other than in connection
with a Change of Control (as defined in the  Warrants),  neither the Company nor
any of its Subsidiaries shall take any action which would be reasonably expected
to result in the  delisting or suspension of the Common Stock from the Principal
Market.  The  Company  shall  pay all  fees  and  expenses  in  connection  with
satisfying its obligations under this Section 4(d).

               (e)  Compliance  with Law.  The Company  shall,  and shall  cause
its  Subsidiaries,  to comply in all material respects with all applicable Legal
Requirements (including, without limitation, all Environmental Laws).

          5.  TRANSFER AGENT INSTRUCTIONS.
              ---------------------------

               (a)  The Company shall  issue  irrevocable  instructions  to  its
transfer agent,  and any subsequent  transfer  agent,  to issue  certificates or
credit shares to the applicable balance accounts at the Depository Trust Company
("DTC"),  registered in the name of each Investor or its respective  nominee(s),
for the Warrant  Shares in such amounts as  specified  from time to time by each
Investor to the Company upon exercise of the Warrants (the "Irrevocable Transfer
Agent Instructions"),  a form of which is attached as Exhibit C hereto. Prior to
registration  of the Warrant  Shares under the 1933 Act,  all such  certificates
shall bear the restrictive  legend  specified in Section 2(g) of this Agreement.
After  registration,  the  restrictive  legend  shall be  removed.  The  Company
warrants  that  no  instruction  other  than  the  Irrevocable   Transfer  Agent
Instructions  referred to in this Section 5 and stop  transfer  instructions  to
give effect to Section 2(f) hereof (in the case of the Warrant Shares,  prior to
registration  of the  Warrant  Shares  under  the 1933 Act) will be given by the
Company to its transfer agent and that the Warrants and the Warrant Shares shall
otherwise be freely  transferable on the books and records of the Company as and
to the extent provided in this Agreement,  the Warrants and the Investors Rights
Agreement.  If an Investor provides the Company with an opinion of counsel, in a
form  reasonably  acceptable  to the Company,  to the effect that a public sale,
assignment or transfer of the Warrants or the Warrant Shares may be made without
registration  under  the 1933 Act or the  Investor  provides  the  Company  with
reasonable  assurances  that such  Warrant  and/or  Warrant  Shares  can be sold
pursuant  to Rule 144  without any  restriction  as to the number of  securities
acquired as of a particular date that can then be immediately  sold, the Company


                                     - 11 -




shall  permit the  transfer,  and, in the case of the Warrant  Shares,  promptly
instruct its transfer agent to issue one or more certificates,  or credit shares
to one or more balance  accounts at DTC, in such name and in such  denominations
as specified by such Investor and without any  restrictive  legend.  The Company
acknowledges  that  a  breach  by it of its  obligations  hereunder  will  cause
irreparable  harm to the  Investors by  vitiating  the intent and purpose of the
transaction contemplated hereby. Accordingly,  the Company acknowledges that the
remedy  at law for a breach  of its  obligations  under  this  Section 5 will be
inadequate  and  agrees,  in the event of a breach or  threatened  breach by the
Company  of the  provisions  of this  Section  5,  that the  Investors  shall be
entitled,  in  addition  to all other  available  remedies,  to an order  and/or
injunction restraining any breach and requiring immediate issuance and transfer,
without the  necessity  of showing  economic  loss and without any bond or other
security being required.

          6.  CONDITIONS TO COMPANY'S OBLIGATIONS HEREUNDER.
              ---------------------------------------------

          The   obligations  of  the  Company   hereunder  are  subject  to  the
satisfaction of each of the following conditions, provided that these conditions
are for the Company's  sole benefit and may be waived by the Company at any time
in its sole  discretion  by providing the  Investors  with prior written  notice
thereof:

               (a)  The Investors shall have  executed  this  Agreement and  the
Investors  Rights  Agreement  and  delivered  the same to the  Company.

               (b)  The Investors shall have delivered to the Company the shares
of Preferred Stock being redeemed hereby duly endorsed for transfer.

               (c)  The representations and warranties of each Investor shall be
true and correct in all material respects as of the date when made and as of the
Closing  Date as  though  made at that  time  (except  for  representations  and
warranties  that  speak as of a specific  date),  and such  Investor  shall have
performed,  satisfied and complied in all material  respects with the covenants,
agreements and conditions required by this Agreement to be performed,  satisfied
or complied with by such Investor at or prior to the Closing Date.

               (d)  The  Company  shall  have  completed  the  debt  refinancing
transactions  necessary  to  finance  the  purchase  of the  Preferred  Stock as
provided hereunder.

          7.  CONDITIONS TO INVESTORS OBLIGATIONS HEREUNDER.
              ---------------------------------------------

          The  obligations  of  the  Investors  hereunder  are  subject  to  the
satisfaction of each of the following conditions, provided that these conditions
are for each  Investor's  sole benefit and may be waived by such Investor at any
time in its sole  discretion by providing the Company with prior written  notice
thereof:

               (a)  (i) The  Company shall have executed each of the Transaction
Documents  and  delivered  the same to such  Investor  and (ii) McKim shall have
executed and delivered to the Investors the Investors Rights Agreement.


                                     - 12 -




               (b)  The  Company and its  Subsidiaries  shall  have obtained all
required licenses,  waivers, consents and approvals,  governmental and otherwise
in connection with the transactions contemplated by this Agreement.

               (c) The Common Stock (x) shall be  designated  for  quotation  or
listed on the Principal  Market and (y) shall not have been suspended by the SEC
or  the  Principal  Market  from  trading  on the  Principal  Market  nor  shall
suspension by the SEC or the Principal Market have been threatened either (A) in
writing by the SEC or the  Principal  Market or (B) by falling below the minimum
listing maintenance requirements of the Principal Market.

               (d) The  representations  and warranties of  the Company shall be
true,  complete and correct in all material respects (except for representations
and  warranties  qualified by  materiality  or Material  Adverse  Effect or such
similar qualification, which shall not be further qualified) as of the date when
made  and as of the  Closing  Date  as  though  made at that  time  (except  for
representations and warranties that speak as of a specific date) and the Company
shall have performed, satisfied and complied with the covenants,  agreements and
conditions required by the Transaction  Documents to be performed,  satisfied or
complied  with by the Company at or prior to the  Closing  Date.  Such  Investor
shall have received a certificate,  executed by the Chief  Executive  Officer or
the Chief Financial Officer of the Company, dated as of the Closing Date, to the
foregoing effect and as to such other matters as may be reasonably  requested by
such Investor.

               (e) Such  Investor  shall  have  received  the opinion of  Davis,
Malm &  D'Agostine,  P.C.,  dated as of the  Closing  Date,  in form,  scope and
substance satisfactory to such Investor.

               (f)  The  Company  shall  have  executed and  delivered  to  such
Investor the Warrants (in such denominations as such Investor shall request) for
the Warrants being issued to such Investor at the Closing.

               (g)  The Board of Directors  of  the Company shall  have  adopted
resolutions  consistent  with  Section  3(b)  above  and  in a  form  reasonably
acceptable to such Investor (the "Resolutions").

               (h) As of the Closing Date,  the Company shall have  reserved out
of its authorized and unissued Common Stock, solely for the purpose of effecting
the exercise of the Warrants, 2,775,000 shares of Common Stock.

               (i)  The  Irrevocable Transfer Agent Instructions, in the form of
Exhibit C attached  hereto,  shall have been  delivered to such  Investor,  duly
executed by the Company and  acknowledged  in writing by the Company's  transfer
agent.

               (j)   The  Company  shall  have  delivered  to  such  Investor  a
certificate  evidencing  the  incorporation  and good standing of the Company in
such  entity's  jurisdiction  of  incorporation  or  organization  issued by the
Secretary of State of such  jurisdiction  of  incorporation  as of a date within
five days of the Closing Date.


                                     - 13 -



               (k) The Company shall have delivered to such Investor a certified
copy of the  Articles of  Organization  as  certified  by the  Secretary  of the
Commonwealth of  Massachusetts  as of a date within five (5) days of the Closing
Date.

               (l)  The  Company  shall  have  delivered  to  such  Investor   a
secretary's certificate,  dated as of the Closing Date, certifying as to (A) the
Resolutions,  (B) the Articles of Organization  and (C) the By-laws,  each as in
effect at the Closing.

               (m) The Company shall have made all filings  under all applicable
federal and state  securities  laws  necessary to consummate the issuance of the
Warrants pursuant to this Agreement in compliance with such laws.

               (n) The Company shall have  paid by wire transfer  of immediately
available funds the Aggregate Redemption Price to such Investor, as set forth on
the Schedule of Investors.

               (o)  Such Investor  shall  have received  such other  agreements,
instruments,  certificates and other documents as it may determine are customary
for the transactions  contemplated by the Transaction Documents, in each case in
form and substance satisfactory to such Investor.

               (p)  The Company shall have repaid in full all obligations  owing
under all agreements and  instruments  evidencing  indebtedness  owing under the
credit facility between the Company,  certain of its Subsidiaries and Affiliates
of Cerberus CH, LLC.

          8.  INDEMNIFICATION.
              ---------------

               (a) In consideration of each Investor's execution and delivery of
the Transaction  Documents and engaging in the transactions  contemplated hereby
and thereby and in addition to all of the Company's other  obligations under the
Transaction  Documents,  the Company shall defend,  protect,  indemnify and hold
harmless  each  Investor  and each  other  holder of  Warrants  and all of their
stockholders,  officers,  directors,  managers, members, employees and direct or
indirect   investors  and  any  of  the  foregoing   persons'  agents  or  other
representatives  (including,  without  limitation,  those retained in connection
with  the  transactions  contemplated  by  this  Agreement)  (collectively,  the
"Indemnitees")  from and against any and all actions,  causes of action,  suits,
claims, losses, costs, penalties, fees, liabilities and damages, and expenses in
connection therewith  (irrespective of whether any such Indemnitee is a party to
the  action  for which  indemnification  hereunder  is  sought),  and  including
reasonable  attorneys' fees and disbursements  (the "Indemnified  Liabilities"),
incurred by any Indemnitee as a result of, or arising out of, or relating to (a)
any  misrepresentation  or breach of any  representation or warranty made by the
Company in the Transaction  Documents,  or any other certificate,  instrument or
document  contemplated  hereby  or  thereby,  (b) any  breach  of any  covenant,
agreement or obligation of the Company contained in the Transaction Documents or
any other certificate,  instrument or document  contemplated  hereby or thereby,
(c) any cause of action,  suit or claim brought or made against such  Indemnitee
(other than a cause of action, suit or claim which is (x) brought or made by the
Company  and (y) is not a  shareholder  derivative  suit) and  arising out of or
resulting  from (i) the execution,  delivery,  performance or enforcement of the


                                     - 14 -




Transaction  Documents,  or  any  other  certificate,   instrument  or  document
contemplated  hereby or thereby or (ii) the status of such Investor or holder of
Warrants or Warrant Shares as an investor in the Company. To the extent that the
foregoing  undertaking by the Company may be unenforceable  for any reason,  the
Company shall make the maximum  contribution to the payment and  satisfaction of
each of the Indemnified  Liabilities  which is permissible under applicable law.
Except as otherwise set forth herein,  the mechanics and procedures with respect
to the rights and  obligations  under this  Section 8 shall be the same as those
set forth in Section 5 of the New Investors Rights Agreement, including, without
limitation,  those  procedures  with respect to the settlement of claims and the
Company's rights to assume the defense of claims.

          9.  MISCELLANEOUS.
              -------------

               (a)   Governing Law;  Jurisdiction;  Jury Trial.   All  questions
concerning the construction,  validity,  enforcement and  interpretation of this
Agreement  shall be  governed  by the  internal  laws of the  State of New York,
without  giving effect to any choice of law or conflict of law provision or rule
(whether  of the State of New York or any other  jurisdiction)  that would cause
the  application  of the laws of any  jurisdiction  other  than the State of New
York. Each party hereby irrevocably submits to the non-exclusive jurisdiction of
the  state and  federal  courts  sitting  in The City of New  York,  Borough  of
Manhattan,  for the  adjudication  of any  dispute  hereunder  or in  connection
herewith or with any transaction  contemplated  hereby or discussed herein,  and
hereby  irrevocably  waives,  and  agrees  not to assert in any suit,  action or
proceeding,  any claim that it is not personally  subject to the jurisdiction of
any  such  court,  that  such  suit,  action  or  proceeding  is  brought  in an
inconvenient  forum or that the  venue of such  suit,  action or  proceeding  is
improper.  Each party hereby  irrevocably waives personal service of process and
consents  to process  being  served in any such suit,  action or  proceeding  by
mailing a copy thereof to such party at the address for such notices to it under
this Agreement and agrees that such service shall constitute good and sufficient
service of process and notice thereof.  Nothing contained herein shall be deemed
to limit in any way any right to serve  process in any manner  permitted by law.
EACH PARTY HEREBY  IRREVOCABLY  WAIVES ANY RIGHT IT MAY HAVE,  AND AGREES NOT TO
REQUEST,  A JURY  TRIAL FOR THE  ADJUDICATION  OF ANY  DISPUTE  HEREUNDER  OR IN
CONNECTION  HEREWITH  OR  ARISING  OUT OF  THIS  AGREEMENT  OR  ANY  TRANSACTION
CONTEMPLATED HEREBY.

               (b)  Counterparts.  This Agreement may be executed in two or more
identical  counterparts,  all of  which  shall  be  considered  one and the same
agreement and shall become effective when  counterparts have been signed by each
party and  delivered to the other  party;  provided  that a facsimile  signature
shall be  considered  due  execution  and shall be  binding  upon the  signatory
thereto with the same force and effect as if the signature were an original, not
a facsimile  signature.

               (c) Headings.  The headings of this Agreement are for convenience
of reference and shall not form part of, or affect the  interpretation  of, this
Agreement.

               (d)  Severability.  If any provision  of this Agreement  shall be
invalid   or   unenforceable   in   any   jurisdiction,   such   invalidity   or
unenforceability  shall  not  affect  the  validity  or  enforceability  of  the
remainder  of  this   Agreement  in  that   jurisdiction   or  the  validity  or
enforceability of any provision of this Agreement in any other jurisdiction.


                                     - 15 -



               (e)  Entire Agreement;  Amendments. This Agreement supersedes all
other prior oral or written agreements between each Investor, the Company, their
affiliates  and  persons  acting on their  behalf  with  respect to the  matters
discussed  herein,  and this  Agreement and the  instruments  referenced  herein
contain  the entire  understanding  of the parties  with  respect to the matters
covered  herein and therein  and,  except as  specifically  set forth  herein or
therein,  neither  the  Company  nor  any  Investor  makes  any  representation,
warranty,  covenant or undertaking with respect to such matters. No provision of
this  Agreement  may be amended or waived other than by an instrument in writing
signed by the  Company  and the  holders of at least a majority  of the  Warrant
Shares  issuable  upon  exercise  of all  Warrants  then  outstanding.  No  such
amendment  shall be  effective to the extent that it applies to less than all of
the holders of the Warrants then outstanding.  No consideration shall be offered
or paid to any  person to amend or consent  to a waiver or  modification  of any
provision of any of the Transaction Documents unless the same consideration also
is offered  to all of the  parties to the  Transaction  Documents  or holders of
Warrants,  as the case may be.

               (f)    Notices.   Any   notices,  consents,   waivers  or   other
communications  required  or  permitted  to be  given  under  the  terms of this
Agreement must be in writing and will be deemed to have been delivered: (i) upon
receipt,  when delivered  personally;  (ii) upon receipt, when sent by facsimile
(provided   confirmation  of  transmission  is  mechanically  or  electronically
generated and kept on file by the sending party);  or (iii) one (1) Business Day
after deposit with a nationally  recognized  overnight delivery service, in each
case  properly  addressed to the party to receive the same.  The  addresses  and
facsimile numbers for such communications shall be:

               If to the Company:

                    Clean Harbors, Inc.
                    1501 Washington Street
                    Braintree, MA  02185
                    Attention:  Chief Financial Officer
                    Telephone:  781-849-1800, Ext. 4450
                    Facsimile:  781-848-1632

               With a copy to:

                    Davis, Malm & D'Agostine, P.C.
                    One Boston Place
                    Boston, Massachusetts  02108
                    Attention:  C. Michael Malm, Esq.
                    Telephone:  617-365-2500
                    Facsimile:  617-525-6215

               If to the Transfer Agent:

                    American Stock Transfer & Trust Company
                    6201 15th Avenue
                    Brooklyn, NY  11219
                    Attention:  Fran Noftel or Donna Ansbro
                    Telephone:  718-921-8200
                    Facsimile:  718-921-8337


                                     - 16 -



          If to a Investor,  to it at the address and facsimile number set forth
on the Schedule of Investors, with copies to such Investor's  representatives as
set  forth  on the  Schedule  of  Investors,  or at such  other  address  and/or
facsimile  number  and/or to the attention of such other person as the recipient
party has specified by written  notice given to each other party five days prior
to the effectiveness of such change.  Written  confirmation of receipt (A) given
by the recipient of such notice,  consent,  waiver or other  communication,  (B)
mechanically  or  electronically  generated  by the sender's  facsimile  machine
containing the time, date,  recipient facsimile number and an image of the first
page of such transmission or (C) provided by a nationally  recognized  overnight
delivery service shall be rebuttable  evidence of personal  service,  receipt by
facsimile or receipt from a nationally  recognized overnight delivery service in
accordance  with clause (i), (ii) or (iii) above,  respectively.

               (g) Successors and Assigns.  This Agreement shall be binding upon
and inure to the  benefit of the  parties and their  respective  successors  and
assigns,  including any purchasers of the Warrants. The Company shall not assign
this Agreement or any rights or obligations  hereunder without the prior written
consent of the  holders of at least a majority of the  Warrant  Shares  issuable
upon  exercise  of  all  Warrants  then  outstanding,  including  by  merger  or
consolidation.  An Investor  may assign some or all of its rights  hereunder  or
sell, transfer or dispose of any or all of its shares of Preferred Stock without
the consent of the Company; provided,  however, that the transferee or purchaser
of the  Preferred  Stock has  agreed in  writing  to be bound by the  applicable
provisions of this Agreement.

               (h) No Third Party Beneficiaries.  This Agreement is intended for
the benefit of the parties hereto and their respective  permitted successors and
assigns, and is not for the benefit of, nor may any provision hereof be enforced
by,  any  other  person.

               (i)  Survival.  The  representations, warranties and covenants of
the Company and the Investors and the  indemnification  provisions  set forth in
Section 8, shall survive the Closing.  Each Investor shall be  responsible  only
for its own representations, warranties, agreements and covenants hereunder.

               (j)  Fees and  Expenses.  At the Closing,  the  Company shall pay
to the Investor's their legal fees and expenses  incurred in connection with its
due diligence and the preparation and negotiation of the Transaction  Documents.
Except as expressly set forth in the Transaction Documents to the contrary, each
party shall pay the fees and expenses of its advisers, counsel,  accountants and
other experts, if any, and all other expenses incurred by such party incident to
the  negotiation,  preparation,  execution,  delivery  and  performance  of this
Agreement.  The Company shall pay all Transfer Agent fees, stamp taxes and other
taxes and duties levied in connection with the sale and issuance of the Warrants
and the Warrant Shares.

               (k) Publicity. The Company and each Investor shall have the right
to approve  before  issuance any press  releases or any other public  statements
with respect to the transactions  contemplated hereby;  provided,  however, that
the Company shall be entitled,  without the prior  approval of any Investor,  to
make  any  press  release  or  other  public  disclosure  with  respect  to such


                                     - 17 -




transactions  as is required by applicable  law and  regulations  (although each
Investor  shall be  consulted by the Company in  connection  with any such press
release or other  public  disclosure  prior to its release and shall be provided
with a copy  thereof  and in no event  may the  Company  disclose  publicly  the
identity of any  Investor  or their  nominees  or  affiliates  without the prior
consent of such  Investor).

               (l) Further Assurances. Each party shall do and perform, or cause
to be done and  performed,  all such further acts and things,  and shall execute
and deliver all such other agreements, certificates,  instruments and documents,
as the other party may  reasonably  request in order to carry out the intent and
accomplish  the  purposes  of  this  Agreement  and  the   consummation  of  the
transactions  contemplated  hereby.

               (m)  Placement Agent.  Except  as disclosed  in  writing  to  the
Investors,  the  Company  acknowledges  that it has not  engaged  any  Person as
placement agent or broker in connection  with the issuance of the Warrants.  The
Company  shall be  responsible  for the payment of any  placement  agent's fees,
financial advisory fees, or brokers' commissions (other than for persons engaged
by or on behalf of any Investor)  relating to or arising out of the transactions
contemplated  hereby.  The Company  shall pay, and hold each  Investor  harmless
against,  any  liability,  loss  or  expense  (including,   without  limitation,
attorney's fees and out-of-pocket  expenses) arising in connection with any such
claim.

               (n) No Strict  Construction.  The language used in this Agreement
will be deemed to be the language  chosen by the parties to express their mutual
intent,  and no rules of strict  construction will be applied against any party.

               (o)  Remedies.  Each  Investor and each holder  of  the  Warrants
and/or  Warrant  Shares  shall  have all rights  and  remedies  set forth in the
Transaction  Documents and all rights and remedies  which such holders have been
granted at any time under any other  agreement or contract and all of the rights
which such holders  have under any law.  Any person  having any rights under any
provision  of  this   Agreement   shall  be  entitled  to  enforce  such  rights
specifically  (without posting a bond or other security),  to recover damages by
reason of any breach of any  provision  of this  Agreement  and to exercise  all
other rights  granted by law.

              (p)  Original Investors Rights Agreement.  The parties agree that,
upon the Closing Date, the Original  Investors  Rights  Agreement will terminate
and be of no further force and effect and be superseded by the Investors  Rights
Agreement.

               (q)  Termination.  If the Closing has  not occurred  on or before
June 30, 2004, this Agreement shall  terminate  without  liability to any of the
parties hereto,  unless such date is mutually  extended in a written  instrument
executed by each of the parties hereto.

               (r)  Investor Consent.  The Investors,  in  their capacity as the
holders of all of the issued and outstanding  shares of Preferred Stock,  hereby
consent to (i) any of the debt financing transactions consummated by the Company
as of the  Closing  Date that are  necessary  to permit  the  Company to pay the
Aggregate  Redemption  Price and (ii) the  termination as of the Closing Date of
the Voting  Agreement  dated as of  September  6, 2002 among the Company and the
shareholders  of the Company and the Investors  listed on the signature pages to


                                     - 18 -




such  Voting  Agreement,  so long as: (A) the Company  complies  with all of its
obligations  under this Agreement and there has been no breach of this Agreement
by the  Company,  (B) the Company  uses a portion of the proceeds to pay in full
the  Aggregate  Redemption  Price no later than the first date on which any such
debt financing  transactions  occurs and (C) no such debt financing  transaction
shall involve or  contemplate  the issuance or deemed  issuance of any equity or
equity-linked  securities of the Company or any of its Subsidiaries.


                            [Signature Page Follows]



































                                     - 19 -




          IN WITNESS  WHEREOF,  the  Investors  and the Company have caused this
Redemption Agreement to be duly executed as of the date first written above.

COMPANY:

CLEAN HARBORS, INC.



By:  ______________________________
     Name:
     Title:
































                                     - 20 -






                                              INVESTORS:

                                              CERBERUS CH LLC


                                              By:  Cerberus Partners, L.P.
                                                   its Managing Member

                                              By:  Cerberus Associates, L.L.C.
                                                   its General Partner


                                              By:  _____________________________
                                                   Name:
                                                   Title:



































                                     - 21 -





                                         OAK HILL SECURITIES FUND, L.P.


                                         By: Oak Hill Securities GenPar, L.P.
                                             its General Partner

                                         By: Oak Hill Securities MGP, Inc.
                                             its General Partner

                                         By:  _______________________________
                                              Name:
                                              Title:


                                         OAK HILL SECURITIES FUND II, L.P.


                                         By: Oak Hill Securities GenPar II, L.P.
                                             its General Partner

                                         By: Oak Hill Securities MGP II, Inc.
                                             its General Partner

                                         By:  _______________________________
                                              Name:
                                              Title:


                                         LERNER ENTERPRISES, L.P.


                                         By:  Oak Hill Asset Management, Inc.
                                              As advisor and attorney-in-fact to
                                              Lerner Enterprises

                                         By:  _______________________________
                                                  Name:
                                                  Title:




                                     - 22 -




                                       P&PK FAMILY LTD. PARTNERSHIP


                                       By: Oak Hill Asset Management, Inc.
                                           As advisor and attorney-in-fact to
                                           P&PK Family Ltd. Partnership

                                       By:  _______________________________
                                            Name:
                                            Title:


                                       CARDINAL INVESTMENT PARTNERS I, L.P.


                                       By:  Oak Hill Advisors, L.P.
                                            As advisor and attorney-in-fact to
                                            Cardinal Investment Partners I, L.P.

                                       By:  Oak Hill Advisors MGP, Inc.
                                            its General Partner

                                       By:  _______________________________
                                            Name:
                                            Title:


                                       BASSO HOLDINGS LTD.
                                       (f/k/a AIG DKR SoundShore Holdings Ltd.)


                                       By: __________________________
                                           Howard I. Fischer
                                           Authorized Signatory





                                     - 23 -




                             SCHEDULE OF INVESTORS




Investor Address             Number     Aggregate              Number       Investor's Representatives'   Wire
and Facsimile Number         of         Redemption Price       of           Address and                   Instructions
                             Preferred                         Warrants     Facsimile Number
                             Shares

                                                                                           
Cerberus CH LLC               16,750    $18,308,132.12,        1,859,250    Schulte Roth & Zabel LLP      Account Name: Cerberus
450 Park Avenue, 28th Floor             assuming the                        919 Third Avenue                  Partners, L.P.
New York, NY 10022                      Closing occurs on                   New York, NY 10022            Bank Name: Citibank, N.A,
Telephone:  (212) 891-2100              June 30, 2004.  If                  Attn: Stuart Freedman, Esq.   ABA #: 021-000-089
Facsimile:  (212) 891-1540              the Closing occurs                  Telephone: (212) 756-2000     Account Number: 37839889
Attention:  Kevin Genda and             after June 30, 2004,                Facsimile: (212) 593-5955     Attn: Michael Hisler
            Daniel Wolf                 the Aggregate                                                     RE: Clean Harbors -
                                        Redemption Price                                                      Preferred Redemption
                                        shall include an
                                        additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $3,010.88.


Oak Hill Securities Fund,      1,675    $1,830,813.21,         185,925      Paul, Weiss, Rifkind,         The Bank of New York
  L.P.                                  assuming the                           Wharton & Garrison         ABA#: 021-000-018
65 East 55th Street                     Closing occurs on                   1285 Avenue of the Americas   BBK/IOC/565/Institutional
New York, New York 10022                June 30, 2004.  If                  New York, NY 10019                Custody
Telephone:  (212) 326-1552              the Closing occurs                  Telephone: (212) 373-3000     Acct.: Oak Hill Securities
Facsimile:  (212) 838-8411              after June 30, 2004,                Facsimile: (212) 757-3990            Fund, L.P.
Attention:  William H.                  the Aggregate                       Attention: Eric Goodison      Acct #: 272244
            Bohnsack, Jr.               Redemption Price
                                        shall include an
                                        additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $301.09.


Oak Hill Securities Fund         3,465  $3,787,324.05,         384,615      Paul, Weiss, Rifkind,         The Bank of New York
  II, L.P.                              assuming the                           Wharton & Garrison         ABA#: 021-000-018
65 East 55th Street                     Closing occurs on                   1285 Avenue of the Americas   BBK/IOC/565/Institutional
New York, New York 10022                June 30, 2004.  If                  New York, NY 10019                Custody
Telephone:  (212) 326-1552              the Closing occurs                  Telephone: (212) 373-3000     Acct.: Oak Hill Securities
Facsimile:  (212) 838-8411              after June 30, 2004,                Facsimile: (212) 757-3990            Fund II, L.P.
Attention:  William H.                  the Aggregate                       Attention: Eric Goodison      Acct #: 272244
            Bohnsack, Jr.               Redemption Price
                                        shall include
                                        an additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $622.85.


Lerner Enterprises, L.P.           730  $797,906.65,            81,030      Paul, Weiss, Rifkind,         Citibank, NA
65 East 65th Street                     assuming the                           Wharton & Garrison         ABA #: 021-000-089
New York, New York 10022                Closing occurs on                   1285 Avenue of the Americas   Acct: Bear Stearns & Co.
Telephone:  (212) 326-1552              June 30, 2004.  If                  New York, NY 10019            Acct #: 092-53186
Facsimile:  (212) 838-8411              the Closing occurs                  Telephone: (212) 373-3000     For further Credit: Lerner
Attention:  William H.                  after June 30, 2004,                Facsimile: (212) 757-3990             Enterprises, L.P.
            Bohnsack, Jr.               the Aggregate                       Attention: Eric Goodison      Acct #: 102-03854-21
                                        Redemption Price
                                        shall include
                                        an additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $131.22.




P&PK Family Ltd. Partnership       165  $180,348.76,            18,135       Paul, Weiss, Rifkind,        Citibank, NA
65 East 55th Street                     assuming the                           Wharton &  Garrison        ABA #: 021-000-089
New York, New York 10021                Closing occurs on                    1285 Avenue of the Americas  Acct: Bear Stearns & Co.
Telephone:  (212) 326-1552              June 30,  2004.  If                  New York, NY 10019           Acct #: 092-53186
Facsimile:  (212) 838-8411              the Closing occurs                   Telephone: (212) 373-3000    For further Credit: P&PK
Attention:  William H.                  after June 30, 2004,                 Facsimile: (212) 757-3990       Family Ltd. Partnership
            Bohnsack, Jr.               the Aggregate                        Attention: Eric Goodison     Acct #: 102-03522-23
                                        Redemption Price
                                        shall include
                                        an additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $29.66.


Cardinal Investment                425  $464,534.70,            47,175      Paul, Weiss, Rifkind,         Citibank, NA
Partners I, L.P.                        assuming the                        Wharton & Garrison            ABA #: 021-000-089
65 East 55th Street                     Closing occurs on                   1285 Avenue of the Americas   Acct: Bear Stearns & Co.
New York, New York 10021                June 30, 2004.  If                  New York, NY 10019            Acct #: 092-53186
Telephone: (212) 326-1552               the Closing occurs                  Telephone: (212) 373-3000     For further Credit:
Facsimile:  (212) 838-8411              after June 30, 2004,                Facsimile: (212) 757-3990        Cardinal  Investment
Attention:  William H.                  the Aggregate                       Attention: Eric Goodison         Partners I, L.P.
            Bohnsack, Jr.               Redemption Price                                                  Acct #: 102-03522-23
                                        shall include
                                        an additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $76.40.


Basso Holdings Ltd.              1,790  $1,956,510.84,         198,690      Basso Holdings Ltd.           Citibank NA, NY
c/o Basso Capital                       assuming the                        c/o Basso Capital             ABA #: 021-000-089
    Management, L.P.                    Closing occurs on                   Management, L.P.              Acct: Basso Holdings Ltd.
1266 East Main Street                   June 30, 2004.  If                  1281 East Main Street         Acct #: 40764566
Stamford, Connecticut 06902             the Closing occurs                  Stamford, Connecticut 06902
Telephone: (203) 352-6100               after June 30, 2004,                Telephone: (203) 352-6100
Facsimile:  (203) 352-6194              the Aggregate                       Facsimile: (203) 352-6194
Attention: Howard I. Fischer            Redemption Price                    Attention: Marc Seidenberg
                                        shall include
                                        an additional per
                                        diem amount for each
                                        day after June 30,
                                        2004 until and
                                        including the
                                        Closing Date equal
                                        to $321.76.







                                  Schedule 3(c)
                                  -------------


                              Capital Stock Rights
                              --------------------

                                  Schedule 3(c)
                                  -------------


                              Capital Stock Rights
                              --------------------

(A)  Preemptive rights - none.

(B)  Convertible debt securities - none.

(C)  Other outstanding rights:

     (i)  112,000  shares  of Series B Preferred Stock which are now convertible
in Common Stock at a  conversion  ratio of 3.040 shares of Common Stock for each
share of Series B Preferred Stock.

     (ii)  Employee stock  option and stock  purchase plans  (and stock  options
issued thereunder):

                    (A)  Clean  Harbors,  Inc.  1987  Stock  Option   Plan
                    (expired but  some options  granted thereunder  remain
                    outstanding).  As of  June 14, 2004, there were 34,750
                    options  outstanding.  There  are  no further  options
                    authorized to be issued.

                    (B)  Clean Harbors,  Inc. 1992  Equity  Incentive Plan
                    expired  but some options granted  thereunder   remain
                    outstanding).  As of June 14, 2004, there were 493,040
                    options  outstanding.  There  are  no further  options
                    authorized to be issued.

                    (C) Clean  Harbors,  Inc. 2000 Stock  Incentive  Plan.
                    As of June 14,  2004,  there  were  1,227,120  options
                    outstanding and an additional 214,214 shares available
                    for grant.

                    (D) Clean Harbors  Employee  Stock Purchase  Plan.  As
                    of June 14, 2004, there were 165,560 shares  available
                    to be issued.

(D)  Registration  Rights  Agreements:

     Investors Rights Agreement dated September 6, 2002 in favor of the
     Investors.

(E)  Redemption  Agreements - While the Series B Convertible Stock is redeemable
at the option of the Company, there is  no  redemption  obligation.

(F)  Anti-dilution  Provisions:

     The  Series B Preferred Stock provides for "weighted average" anti-dilution
     protection in the event the Company issues Common Stock or rights therefore
     at less than market value  (subject to certain  permitted  transactions)

(G)  Phantom Stock Plans - none.












                                                               EXECUTION VERSION
================================================================================











                               CLEAN HARBORS, INC.






                           INVESTORS RIGHTS AGREEMENT








                            Dated as of June 30, 2004








================================================================================







9590099.8





                                TABLE OF CONTENTS

                                                                            Page

1.  DEFINITIONS...............................................................1

2.  REGISTRATION UNDER THE SECURITIES ACT.....................................5

       2.1.   Demand Registration.............................................5
       2.2.   Incidental Registration.........................................9
       2.3.   S-3 Registration; Shelf Registration............................11
       2.4.   Underwritten Offerings..........................................11
       2.5.   Expenses........................................................12
       2.6.   Conversions; Exercises..........................................12
       2.7.   Registration Eligibility........................................12

3.  HOLDBACK ARRANGEMENTS.....................................................13

       3.1.   Restrictions on Sale by Holders of Registrable Securities.......13
       3.2.   Restrictions on Sale by the Company and Others..................13

4.  REGISTRATION PROCEDURES...................................................13

       4.1.   Obligations of the Company......................................13
       4.2.   Seller Information..............................................18
       4.3.   Notice to Discontinue...........................................18

5.  INDEMNIFICATION; CONTRIBUTION.............................................18

       5.1.   Indemnification by the Company..................................18
       5.2.   Indemnification by Holders......................................19
       5.3.   Conduct of Indemnification Proceedings..........................19
       5.4.   Contribution....................................................20
       5.5.   Indemnification Payments........................................21
       5.6.   Other Indemnification...........................................21

6. GENERAL PROVISIONS REGARDING REGISTRATIONS.................................21

       6.1.   Adjustments Affecting Registrable Securities....................21
       6.2.   Registration Rights to Others...................................21
       6.3.   Availability of Information; Rule 144; Rule 144A; Other
                Exemptions....................................................21

7. PROVISIONS APPLICABLE TO SECURITYHOLDERS...................................22

       7.1.   General Restriction.............................................22
       7.2.   Right of Co-Sale................................................22
       7.3.   Permitted Transfers.............................................23

8. GENERAL................................................................... 23

       8.1.   Amendments and Waivers..........................................23
       8.2.   Notices.........................................................24
       8.3.   Successors and Assigns..........................................25
       8.4.   Counterparts....................................................25




                                                                            Page

       8.5.   Descriptive Headings, Etc.......................................25
       8.6.   Severability....................................................25
       8.7.   CHOICE OF LAW AND VENUE; JURY TRIAL WAIVER......................26
       8.8.   Remedies; Specific Performance..................................26
       8.9.   Entire Agreement................................................26
       8.10.  Further Assurances..............................................27
       8.11.  Construction....................................................27
       8.12.  No Inconsistent Agreement.......................................27
       8.13.  Costs and Attorneys' Fees.......................................27































                                      -ii-






                           INVESTORS RIGHTS AGREEMENT

          This INVESTORS RIGHTS AGREEMENT (this "Agreement") is made and entered
into as of June 30, 2004,  by and among Clean  Harbors,  Inc.,  a  Massachusetts
corporation (the "Company"),  the investors identified as Initial Holders on the
signature pages hereto (the "Initial  Holders"),  Alan S. McKim and the Trustees
of Alan S. McKim's  Children's  Trust (the  "Trust,"  and together  with Alan S.
McKim, "McKim").

                              W I T N E S S E T H :
                              - - - - - - - - - -

          WHEREAS, simultaneously herewith, the Company and the Initial Holders,
have entered into a Preferred  Stock  Redemption  Agreement dated as of June 30,
2004 (the "Redemption Agreement"), pursuant to which the Company agreed, subject
to the terms and  conditions  therein  stated,  to redeem an aggregate of 25,000
shares of Series C Convertible  Redeemable  Preferred Stock, par value $0.01 per
share, of the Company (the "Series C Preferred  Stock") in exchange for cash and
the issuance to the Initial Holders of warrants (the  "Warrants") to purchase an
aggregate of 2,775,000  share of Common  Stock (as defined  herein),  subject to
adjustment as provided in the Warrants.

          WHEREAS, in connection with the Redemption Agreement,  (i) the Company
is hereby  granting the Initial  Holders  registration  rights and certain other
rights and (ii) McKim,  who will  benefit as a  significant  shareholder  of the
Company by the Initial  Holders  agreeing  to have the Series C Preferred  Stock
redeemed by the Company under the Redemption  Agreement,  is hereby granting the
Initial Holders the right to tag-along to certain sales of Company securities by
McKim, all subject to the terms and conditions of this Agreement.

          NOW,  THEREFORE,  in  consideration  of the premises and of the mutual
covenants  and  agreements  contained  herein  and for other  good and  valuable
consideration the receipt and sufficiency of which is hereby  acknowledged,  and
intending to be legally bound hereby, the parties hereto agree as follows:

          1.  Definitions.  As used in this Agreement, the following terms shall
have the following meanings:

          "Affiliate"  shall  mean (i) with  respect  to any  Person,  any other
Person  directly or indirectly  controlling  or controlled by or under direct or
indirect  common  control  with  such  Person,  and  (ii)  with  respect  to any
individual, shall also mean the spouse, sibling, child, step-child,  grandchild,
niece, nephew or parent of such Person, or the spouse thereof.

          "Agents" shall have the meaning set forth in Section 5.1.

          "Agreement" shall have the meaning set forth in the preamble.

          "Common  Stock" shall mean shares of common stock,  par value $.01 per
share, of the Company.

          "Company" shall have the meaning set forth in the preamble.

9590099.8




          "Convey" has the meaning set forth in Section 7.1.

          "Demand  Registration"  shall  mean  a  registration  required  to  be
effected by the Company pursuant to Section 2.1.

          "Demand Registration Statement" shall mean a registration statement of
the Company  which covers the  Registrable  Securities  requested to be included
therein  pursuant  to the  provisions  of  Section  2.1 and all  amendments  and
supplements to such registration statement, including post-effective amendments,
in each case including the Prospectus  contained  therein,  all exhibits thereto
and all material  incorporated  by reference  (or deemed to be  incorporated  by
reference) therein.

          "Encumbrance" shall mean any lien, claim,  charge,  security interest,
mortgage, pledge, easement, conditional sale or other title retention agreement,
defect in title, covenant or other restriction of any kind.

          "Exchange  Act" shall mean the  Securities  Exchange  Act of 1934,  as
amended  from time to time,  and the rules and  regulations  thereunder,  or any
successor statute.

          "Governmental  Entity"  shall mean any  domestic  (federal and state),
foreign  or  supranational  court,  commission,  governmental  body,  regulatory
agency, authority or tribunal.

          "Holders"  shall mean the Initial  Holders for so long as they are the
registered  owner  of any  Registrable  Securities  and  such  of  their  heirs,
successors  and  permitted  assigns  (including  any  permitted  transferees  of
Registrable   Securities)  who  acquire  or  are  otherwise  the  transferee  of
Registrable Securities,  directly or indirectly, from any Initial Holder (or any
subsequent Holder), for so long as such heirs,  successors and permitted assigns
are the registered  owner of any  Registrable  Securities.  For purposes of this
Agreement,  a Person will be deemed to be a Holder whenever such Person holds an
option  to  purchase,   or  a  security   convertible  into  or  exercisable  or
exchangeable for, Registrable  Securities  (including the Warrants),  whether or
not such purchase,  conversion,  exercise or exchange has actually been effected
and  disregarding  any legal  restrictions  upon the  exercise  of such  rights.
Registrable  Securities  issuable upon exercise of an option or upon conversion,
exchange or exercise of another  security  shall be deemed  outstanding  for the
purposes of this Agreement.

          "Holder's  Counsel" shall mean one firm of counsel (per  registration)
to the Holders of Registrable  Securities  participating  in such  registration,
which counsel shall be selected (i) in the case of a Demand Registration, by the
Initiating  Holders holding a majority of the  Registrable  Securities for which
registration  was requested in the Request,  and (ii) in all other cases, by the
Majority Holders of the Registration.

          "Incidental  Registration"  shall mean a  registration  required to be
effected by the Company pursuant to Section 2.2.

          "Incidental   Registration   Statement"   shall  mean  a  registration
statement of the Company,  which covers the Registrable  Securities requested to
be included therein pursuant to the provisions of Section 2.2 and all amendments
and  supplements  to  such  registration  statement,   including  post-effective
amendments,  in each  case  including  the  Prospectus  contained  therein,  all


                                       2



exhibits  thereto and all material  incorporated  by reference  (or deemed to be
incorporated by reference) therein.

          "Initial Holders" shall have the meaning set forth in the preamble.

          "Initiating   Holders"  shall  mean,  with  respect  to  a  particular
registration, the Holders who initiated the Request for such registration.

          "Inspector"  or  "Inspectors"  has the  meaning  set forth in  Section
4.1(g).

          "Majority  Holders"  shall  mean one or more  Holders  of  Registrable
Securities  who  would  hold a  majority  of  the  Registrable  Securities  then
outstanding.

          "Majority Holders of the  Registration"  shall mean, with respect to a
particular registration, one or more Holders of Registrable Securities who would
hold  a  majority  of  the  Registrable   Securities  to  be  included  in  such
registration.

          "McKim" has the meaning set forth in the preamble.

          "NASD" shall mean the National Association of Securities Dealers, Inc.

          "Nasdaq  National  Market" shall have the meaning set forth in Section
4.1(k).

          "No-Action Letter" shall have the meaning set forth in Section 2.7

          "Permitted  Family  Transferee"  has the  meaning set forth in Section
7.3.

          "Person" shall mean any individual,  firm,  partnership,  corporation,
trust,  joint  venture,  association,  joint stock  company,  limited  liability
company,  unincorporated  organization  or any  other  entity  or  organization,
including a government  or agency or political  subdivision  thereof,  and shall
include any successor (by merger or otherwise) of such entity.

          "Pro Rata Share" has the meaning set forth in Section 7.2(a).

          "Prospectus"  shall mean the  prospectus  included  in a  Registration
Statement  (including,  without limitation,  any preliminary  prospectus and any
prospectus  that includes any information  previously  omitted from a prospectus
filed as part of an effective  registration statement in reliance upon Rule 430A
promulgated  under the  Securities  Act) and any such  Prospectus  as amended or
supplemented  by  any  prospectus  supplement,  and  all  other  amendments  and
supplements to such Prospectus, including post-effective amendments, and in each
case  including  all  material  incorporated  by  reference  (or  deemed  to  be
incorporated by reference) therein.

          "Purchaser" has the meaning set forth in Section 7.2(a).

          "Purchase Offer" has the meaning set forth in Section 7.2(a).

          "Records" shall have the meaning set forth in Section 4.1(g).


                                       3




          "Redemption Agreement" has the meaning set forth in the first recital.

          "Registrable  Securities" shall mean (i) any Warrant Shares,  and (ii)
any other  securities of the Company (or any successor or assign of the Company,
whether  by merger,  consolidation,  sale of assets or  otherwise)  which may be
issued with respect to, in exchange for, or in  substitution  of, Warrant Shares
by reason  of any  dividend  or stock  split,  combination  of  shares,  merger,
consolidation,  recapitalization,   reclassification,  reorganization,  sale  of
assets or similar transaction. As to any particular Registrable Securities, such
securities  shall cease to be  Registrable  Securities  when (A) a  registration
statement with respect to the sale of such  securities  shall have been declared
effective under the Securities Act and such securities  shall have been disposed
of in accordance with such registration statement,  (B) such securities are sold
pursuant  to Rule  144 (or any  similar  provisions  then in  force)  under  the
Securities Act, (C) such  securities  have been otherwise  transferred and a new
certificate  or other  evidence  of  ownership  for them not  bearing the legend
restricting  further  transfer  shall have been  delivered  by the  Company  and
subsequent public distribution of them shall not require  registration under the
Securities Act, or (D) such securities shall have ceased to be outstanding.

          "Registration  Expenses"  shall  mean  any and all  reasonable  out of
pocket expenses  incident to performance of or compliance with this Agreement by
the Company and its  subsidiaries,  including,  without  limitation (i) all SEC,
stock exchange,  NASD and other registration,  listing and filing fees, (ii) all
fees and expenses  incurred in connection with compliance with state  securities
or blue sky laws and compliance with the rules of any stock exchange  (including
fees and  disbursements  of counsel in connection  with such  compliance and the
preparation  of a blue sky memorandum and legal  investment  survey),  (iii) all
printers'  fees and  costs  incurred  in  printing,  distributing,  mailing  and
delivering  any  Registration  Statement,  any Prospectus and any other document
relating to the performance of or compliance with this Agreement,  (iv) the fees
and disbursements of counsel for the Company,  (v) the fees and disbursements of
Holders'  Counsel,  (vi) the fees and  disbursements  of all independent  public
accountants  (including the expenses of any audit and/or "cold comfort" letters)
and the fees and expenses of other Persons,  including experts,  retained by the
Company,  (vii) the  expenses  incurred  in  connection  with  making  road show
presentations  and holding  meetings with potential  investors to facilitate the
distribution   and  sale  of  Registrable   Securities,   (viii)  any  fees  and
disbursements  of  underwriters  customarily  paid  by  issuers  or  sellers  of
securities,  (ix)  premiums  and other costs of policies  of  insurance  against
liabilities  arising out of the public  offering of the  Registrable  Securities
being registered,  and (x) all internal  expenses of the Company  (including all
salaries and expenses of officers and employees  performing  legal or accounting
duties);  provided,  however,  Registration Expenses shall not include discounts
and commissions  payable to underwriters,  selling  brokers,  dealer managers or
other similar  Persons  engaged in the  distribution  of any of the  Registrable
Securities;  provided, further, that in any case where Registration Expenses are
not to be borne by the  Company,  such  expenses  shall not include  salaries of
Company  personnel or general overhead  expenses of the Company,  auditing fees,
premiums  or  other  expenses  relating  to  liability   insurance  required  by
underwriters  of the Company or other expenses for the  preparation of financial
statements or other data normally prepared by the Company in the ordinary course
of its  business or which the  Company  would have  incurred  in any event;  and
provided,  further,  that in the  event  the  Company  shall  not  register  any
securities with respect to which it had given written notice of its intention to


                                       4




register to Holders,  notwithstanding anything to the contrary in the foregoing,
all of the costs  incurred by the Holders in connection  with such  registration
shall be deemed to be Registration Expenses.

          "Registration  Statement" shall mean any registration statement of the
Company  which  covers  any  Registrable   Securities  and  all  amendments  and
supplements  to  any  such  Registration  Statement,   including  post-effective
amendments,  in each  case  including  the  Prospectus  contained  therein,  all
exhibits  thereto and all material  incorporated  by reference  (or deemed to be
incorporated by reference) therein.

          "Request" shall have the meaning set forth in Section 2.1(a).

          "SEC"  shall  mean the  Securities  and  Exchange  Commission,  or any
successor agency having jurisdiction to enforce the Securities Act.

          "Securities  Act" shall mean the  Securities  Act of 1933,  as amended
from time to time, and the rules and  regulations  thereunder,  or any successor
statute.

          "Series C  Preferred  Stock"  shall have the  meaning set forth in the
first recital.

          "Shelf  Registration"  shall  have the  meaning  set forth in  Section
2.1(a).

          "Stockholders" shall mean, collectively, the holders of Common Stock.

          "Underwriters"  shall mean the  underwriters,  if any, of the offering
being registered under the Securities Act. "Underwritten  Offering" shall mean a
sale  of  securities  of the  Company  to an  Underwriter  or  Underwriters  for
reoffering to the public.

          "Warrant  Shares"  shall  mean the  shares  of  Common  Stock or other
securities issued or issuable upon exercise of the Warrants.

          "Withdrawn  Demand  Registration"  shall have the meaning set forth in
Section 2.1(a).

          "Withdrawn  Request"  shall  have the  meaning  set  forth in  Section
2.1(a).

          2.  REGISTRATION UNDER THE SECURITIES ACT.

               2.1. Demand Registration.

                    (a)   Right  to  Demand  Registration.  Subject  to  Section
2.1(c) and  Section 2.7  hereof,  at any time or from time to time,  any Initial
Holder (or an assignee to whom such Initial  Holder has  expressly  delegated or
assigned  all or any portion of its rights under this  sentence)  shall have the
right to  request  in  writing  that the  Company  register  all or part of such
Holders'  Registrable  Securities (a "Request") (which Request shall specify the
amount of Registrable  Securities intended to be disposed of by such Holders and


                                       5




the  intended  method of  disposition  thereof)  by filing with the SEC a Demand
Registration  Statement.  As promptly as practicable,  but no later than 15 days
after  receipt of a Request,  the  Company  shall  give  written  notice of such
requested registration to all other Holders of Registrable  Securities.  Subject
to Section 2.1(b),  the Company shall include in a Demand  Registration  (A) the
Registrable  Securities intended to be disposed of by the Initiating Holders and
(B) the  Registrable  Securities  intended to be disposed of by any other Holder
which shall have made a written  request (which request shall specify the amount
of  Registrable   Securities  to  be  registered  and  the  intended  method  of
disposition  thereof) to the Company for inclusion  thereof in such registration
within 20 days after the receipt of such written  notice from the  Company.  The
Company shall, as expeditiously as reasonably  practicable  following a Request,
use its best  efforts  to cause to be filed  with the SEC a Demand  Registration
Statement  providing  for  the  registration  under  the  Securities  Act of the
Registrable  Securities  which the Company has been so  requested to register by
all such  Holders,  to the extent  necessary to permit the  disposition  of such
Registrable  Securities to be registered in accordance with the intended methods
of disposition thereof specified in such Request or further requests (including,
without limitation,  by means of a shelf registration pursuant to Rule 415 under
the Securities Act (a "Shelf  Registration")  if so requested and if the Company
is then  eligible to use such a  registration).  The Company  shall use its best
efforts to have such Demand Registration Statement declared effective by the SEC
as soon as practicable thereafter and to keep such Demand Registration Statement
continuously effective for the period specified in Section 4.1(b).

                    (i)  A Request may be  withdrawn  prior to the filing of the
          Demand   Registration   Statement  by  the  Majority  Holders  of  the
          Registration  (a  "Withdrawn   Request")  and  a  Demand  Registration
          Statement may be withdrawn prior to the  effectiveness  thereof by the
          Majority   Holders   of  the   Registration   (a   "Withdrawn   Demand
          Registration"),  and such  withdrawals  shall be  treated  as a Demand
          Registration  which shall have been effected  pursuant to this Section
          2.1,  unless the Holders of  Registrable  Securities to be included in
          such Registration  Statement  reimburse the Company for its reasonable
          out-of-pocket  Registration  Expenses  relating to the preparation and
          filing of such Demand  Registration  Statement (to the extent actually
          incurred),  in which  case such  withdrawal  shall not be treated as a
          Demand  Registration  effected pursuant to this Section 2.1 (and shall
          not be counted toward the number of Demand  Registrations);  provided,
          however,  that  if  a  Withdrawn  Request  or  Withdrawn  Registration
          Statement  is made (A)  because  of a material  adverse  change in the
          business,  financial  condition or  prospects  of the Company,  or (B)
          because the sole or lead managing  Underwriter advises that the amount
          of  Registrable  Securities  to be sold in such  offering  be  reduced
          pursuant  to  Section  2.1(b)  by  more  than  15% of the  Registrable
          Securities to be included in such  Registration  Statement,  then such
          withdrawal  shall not be  treated  as a Demand  Registration  effected
          pursuant  to this  Section  2.1 (and shall not be  counted  toward the
          number  of  Demand  Registrations)  and  the  Company  shall  pay  all
          Registration Expenses in connection therewith,  and, provided further,
          that if a Withdrawn  Request or Withdrawn Demand  Registration is made
          with  respect to a Request or Demand  Registration  Statement of which
          Basso, as defined below, is the Initiating  Holder,  the Company shall
          continue to effect the Demand  Registration  in  accordance  with this
          Agreement  with  respect to the  Registrable  Securities  sought to be
          registered  by Basso.  Any  Holder  requesting  inclusion  in a Demand


                                       6



          Registration  may,  at any  time  prior to the  effective  date of the
          Demand Registration Statement (and for any reason) revoke such request
          by delivering  written  notice to the Company  revoking such requested
          inclusion.

                    (ii)  The  registration   rights  granted  pursuant  to  the
          provisions   of  this   Section  2.1  shall  be  in  addition  to  the
          registration  rights  granted  pursuant  to the  other  provisions  of
          Section 2 hereof.

                    (b)  Priority   in   Demand   Registrations.  If  a   Demand
Registration  involves an Underwritten  Offering,  and the sole or lead managing
Underwriter,  as the case may be, of such Underwritten Offering shall advise the
Company in writing (with a copy to each Holder  requesting  registration)  on or
before the date five days  prior to the date then  scheduled  for such  offering
that,  in its  opinion,  the amount of  Registrable  Securities  requested to be
included in such  Demand  Registration  exceeds the number  which can be sold in
such offering  within a price range  acceptable  to the Majority  Holders of the
Registration  (such  writing  to  state  the  basis  of  such  opinion  and  the
approximate  number of  Registrable  Securities  which may be  included  in such
offering),  and the  Request is not  thereafter  withdrawn,  the  Company  shall
include in such  Demand  Registration,  to the  extent of the  number  which the
Company  is so  advised  may be  included  in  such  offering,  the  Registrable
Securities  requested to be included in the Demand  Registration  by the Holders
allocated  pro  rata in  proportion  to the  number  of  Registrable  Securities
requested to be included in such Demand Registration by each of such Holders. In
the event the Company  shall not, by virtue of this Section  2.1(b),  include in
any  Demand  Registration  all  of the  Registrable  Securities  of  any  Holder
requested  to be  included in such Demand  Registration,  such Holder may,  upon
written  notice to the  Company  given  within five days of the date such Holder
first is  notified  of such  matter,  further  reduce the amount of  Registrable
Securities  it desires to have included in such Demand  Registration,  whereupon
only the Registrable  Securities,  if any, that it desires to have included will
be so  included  and  the  Holders  not  so  reducing  shall  be  entitled  to a
corresponding  pro rata increase in the amount of  Registrable  Securities to be
included in such Demand Registration.

                    (c)  Limitations on Registrations.  The rights of Holders of
Registrable  Securities  to request  Demand  Registrations  pursuant  to Section
2.1(a) are subject to the following  limitations:  in no event shall the Company
be required to effect a Demand Registration unless the aggregate offering price,
net of underwriting discounts and commissions, is at least $1,000,000; provided,
however,  that the Company  shall be  required  to effect a Demand  Registration
regardless  of the  aggregate  offering  price in the  event  that the  Majority
Holders are disposing of all of the  Registrable  Securities  held by them;  and
(iii) in no event  shall the  Company be  required  to effect  more than (A) two
Demand  Registrations for the benefit of Cerberus CH LLC, an Initial Holder, and
its successors and assigns,  (B) one Demand  Registration for the benefit of all
of the Initial  Holders that are  Affiliates of Oak Hill  Advisors,  Inc.  ("Oak
Hill") or accounts or funds that Oak Hill or its  Affiliates  control or advise,
and their successor and assigns and (C) one Demand  Registration for the benefit
of Basso  Holdings  Ltd.,  an Initial  Holder,  and its  successors  and assigns
(collectively,  "Basso"); provided, however, that such number shall be increased
to the extent the Company (x) does not  include in what would  otherwise  be the
final  registration  for which  the  Company  is  required  to pay  Registration

                                       7



Expenses the number of Registrable  Securities requested to be registered by the
Holders  by reason of  Section  2.1(b) or (y)  terminates  a Shelf  Registration
pursuant  to  Section  2.3  prior to the time  that all  Registrable  Securities
covered by such Shelf Registration have been sold; and provided,  further,  that
the Registration Expenses in connection with each additional Demand Registration
shall be allocated pro rata among all Persons on whose behalf  securities of the
Company  are  included  in such  registration,  on the  basis of the  respective
amounts of the securities then being registered on their behalf.

                    (d) Underwriting; Selection of Underwriters. Notwithstanding
anything to the contrary  contained in Section 2.1(a), if the Initiating Holders
holding a majority of the  Registrable  Securities  for which  registration  was
requested in the Request so elect, the offering of such  Registrable  Securities
pursuant to such Demand  Registration  shall be in the form of a firm commitment
Underwritten  Offering and such Initiating  Holders may require that all Persons
(including  other  Holders)   participating  in  such  registration  sell  their
Registrable  Securities  to the  Underwriters  at the same price and on the same
terms of  underwriting  applicable  to the  Initiating  Holders.  If any  Demand
Registration   involves  an   Underwritten   Offering,   the  sole  or  managing
Underwriters  and any additional  investment  bankers and managers to be used in
connection  with such  registration  shall be selected by the Company subject to
the approval of the Majority Holders of the Registration.

                    (e)  Effective   Registration   Statement;   Suspension.   A
Demand Registration  Statement shall not be deemed to have become effective (and
the related registration will not be deemed to have been effected) (i) unless it
has been declared  effective by the SEC and remains effective in compliance with
the  provisions of the  Securities  Act with respect to the  disposition  of all
Registrable  Securities  covered by such Demand  Registration  Statement for the
time period specified in Section 4.1(b), (ii) if the offering of any Registrable
Securities pursuant to such Demand Registration  Statement is interfered with by
any stop order, injunction or other order or requirement of the SEC or any other
governmental  agency  or  court,  or (iii)  if,  in the case of an  Underwritten
Offering,  the conditions to closing  specified in an underwriting  agreement to
which the Company is a party are not satisfied (other than by the sole reason of
any breach or failure by the  Holders  of  Registrable  Securities)  and are not
otherwise waived.

                    (f)  Registration Statement Form.  Registrations  under this
Section 2.1 shall be on Form S-3 (or a  successor  form  thereto  adopted by the
SEC)  or,  if such  Form  is not  then  available,  on  such  other  appropriate
registration  form of the SEC as shall be  selected  by the  Initiating  Holders
holding a majority of the Registrable  Securities for which the registration was
requested  in the  Request  and  which  shall  be  available  for  the  sale  of
Registrable  Securities  in  accordance  with the intended  method or methods of
disposition  specified in the requests for  registration.  The Company agrees to
include in any such  Registration  Statement all  information  which any selling
Holder, upon advice of counsel, shall reasonably request.

                    (g) Other Registrations.  During the period (i) beginning on
the date of a Request and (ii) ending on the date that is 90 days after the date
that a Demand  Registration  Statement  filed  pursuant to such Request has been
declared  effective by the SEC or, if the Holders shall withdraw such Request or
such Demand  Registration  Statement,  on the date of such Withdrawn  Request or
such  Withdrawn  Registration  Statement,  the  Company  shall not,  without the
consent  of the  Majority  Holders  of  the  Registration,  file a  registration
statement pertaining to any other securities of the Company.


                                       8





               2.2.  Incidental Registration.

                    (a)  Right to  Include Registrable Securities.  (i)  If the
Company  at any  time or  from  time to time  proposes  to  register  any of its
securities under the Securities Act (other than in a registration on Form S-4 or
S-8 or any  successor  form to such forms and other than pursuant to Section 2.1
or 2.3) whether or not pursuant to registration  rights granted to other holders
of its securities  and whether or not for sale for its own account,  the Company
shall  deliver  prompt  written  notice (which notice shall be given at least 45
days  prior  to  such  proposed  registration)  to all  Holders  of  Registrable
Securities  of its  intention  to undertake  such  registration,  describing  in
reasonable  detail the proposed  registration  and  distribution  (including the
anticipated  range of the  proposed  offering  price,  the class  and  number of
securities  proposed to be registered and the distribution  arrangements) and of
such Holders' right to participate in such  registration  under this Section 2.2
as hereinafter provided.  Subject to the other provisions of this Section 2.2(a)
and Section  2.2(b),  upon the written request of any Holder made within 30 days
after the receipt of such written notice (which request shall specify the amount
of  Registrable   Securities  to  be  registered  and  the  intended  method  of
disposition  thereof),  the  Company  shall  effect the  registration  under the
Securities  Act of all  Registrable  Securities  requested  by  Holders to be so
registered (an "Incidental Registration"),  to the extent required to permit the
disposition  (in accordance  with the intended  methods thereof as aforesaid) of
the Registrable Securities so to be registered, by inclusion of such Registrable
Securities in the  Registration  Statement which covers the securities which the
Company  proposes to register  and shall cause such  Registration  Statement  to
become and remain  effective  with  respect to such  Registrable  Securities  in
accordance  with the  registration  procedures  set  forth in  Section  4. If an
Incidental  Registration  involves an Underwritten  Offering,  immediately  upon
notification  to the  Company  from the  Underwriter  of the price at which such
securities  are to be sold,  the  Company  shall so  advise  each  participating
Holder. The Holders requesting  inclusion in an Incidental  Registration may, at
any time prior to the effective  date of the Incidental  Registration  Statement
(and for any reason),  revoke such request by delivering  written  notice to the
Company revoking such requested inclusion.

                    (ii)  If at any  time  after  giving  written  notice of its
          intention to register any  securities  and prior to the effective date
          of the Incidental Registration Statement filed in connection with such
          registration,  the  Company  shall  determine  for any  reason  not to
          register or to delay registration of such securities, the Company may,
          at its election,  give written  notice of such  determination  to each
          Holder of Registrable Securities and, thereupon,  (A) in the case of a
          determination  not to register,  the Company  shall be relieved of its
          obligation to register any  Registrable  Securities in connection with
          such registration (but not from its obligation to pay the Registration
          Expenses  incurred  in  connection   therewith),   without  prejudice,
          however,  to the rights of Holders  to cause such  registration  to be
          effected as a registration  under Section 2.1 and (B) in the case of a
          determination  to  delay  such  registration,  the  Company  shall  be
          permitted to delay the registration of such Registrable Securities for
          the same  period as the delay in  registering  such other  securities;
          provided,  however,  that if such delay shall  extend  beyond 120 days
          from the date the  Company  received  a request to include Registrable
          Securities in such Incidental  Registration,  then the  Company  shall
          again  give  all  Holders the opportunity  to participate  therein and
          shall follow the notification  procedures set  forth in  the preceding


                                       9



          paragraph.  There is no  limitation on the number  of such  Incidental
          Registrations  pursuant  to  this  Section 2.2 which  the  Company  is
          obligated to effect.

                    (iii)  The  registration  rights  granted  pursuant  to  the
          provisions   of  this   Section  2.2  shall  be  in  addition  to  the
          registration  rights  granted  pursuant  to the  other  provisions  of
          Section 2 hereof.

                    (b)  Priority in Incidental Registration.  If an  Incidental
Registration involves an Underwritten Offering (on a firm commitment basis), and
the  sole  or the  lead  managing  Underwriter,  as the  case  may  be,  of such
Underwritten  Offering  shall advise the Company in writing (with a copy to each
Holder  requesting  registration)  on or before  the date five days prior to the
date then  scheduled  for such  offering  that,  in its  opinion,  the amount of
securities (including  Registrable  Securities) requested to be included in such
registration  exceeds  the  amount  which can be sold in such  offering  without
materially  interfering  with the successful  marketing of the securities  being
offered  (such  writing to state the basis of such  opinion and the  approximate
number of such  securities  which may be included in such offering  without such
effect),  the Company shall include in such  registration,  to the extent of the
number which the Company is so advised may be included in such offering  without
such effect,  (i) in the case of a  registration  initiated by the Company,  (A)
first,  the securities that the Company proposes to register for its own account
(but  solely  to the  extent  that the  proceeds  thereof  shall  not be used to
purchase  shares of  common  stock of the  Company  or other  securities  of the
Company),  (B) second,  the Registrable  Securities  requested to be included in
such registration by the Holders, allocated pro rata in proportion to the number
of Registrable  Securities requested to be included in such registration by each
of such Holders, and (C) third, other securities of the Company to be registered
on behalf of any other Person, and (ii) in the case of a registration  initiated
by a Person  other than the  Company,  (A)  first,  the  Registrable  Securities
requested to be included in such  registration  by the Holders,  and any Persons
initiating such registration,  allocated pro rata in proportion to the number of
securities  requested to be included in such  registration  by each of them, (B)
second,  the  securities  that the  Company  proposes  to  register  for its own
account, and (C) third, the securities of the Company to be registered on behalf
of any other Person; provided,  however, that in the event the Company will not,
by virtue of this Section 2.2(b),  include in any such  registration  all of the
Registrable   Securities  of  any  Holder  requested  to  be  included  in  such
registration,  such Holder may, upon written  notice to the Company given within
three days of the time such Holder first is notified of such matter,  reduce the
amount  of   Registrable   Securities  it  desires  to  have  included  in  such
registration,  whereupon only the Registrable Securities,  if any, it desires to
have  included  will be so included  and the  Holders  not so reducing  shall be
entitled  to a  corresponding  pro rata  increase  in the amount of  Registrable
Securities to be included in such registration.

                    (c)   Selection   of   Underwriters.   If   any   Incidental
Registration   involves  an   Underwritten   Offering,   the  sole  or  managing
Underwriter(s) and any additional  investment bankers and managers to be used in
connection  with such  registration  shall be  subject  to the  approval  of the
Majority  Holders of the  Registration  (such  approval  not to be  unreasonably
withheld).


                                       10




               2.3.  S-3 Registration; Shelf Registration.

                    (a)  Shelf  Registration.  If a  request  made  pursuant  to
Section 2.1 is for a Shelf  Registration,  subject to Section  2.7,  the Company
shall use its best efforts to keep the Shelf Registration continuously effective
through  the date on which all of the  Registrable  Securities  covered  by such
Shelf  Registration may be sold pursuant to Rule 144(k) under the Securities Act
(or any successor  provision having similar  effect);  provided,  however,  that
prior to the  termination  of such Shelf  Registration,  the Company shall first
furnish to each Holder of  Registrable  Securities  participating  in such Shelf
Registration (i) an opinion, in form and substance  satisfactory to the Majority
Holders of the  Registration,  of counsel  for the Company  satisfactory  to the
Majority  Holders of the Registration  stating that such Registrable  Securities
are freely  saleable  pursuant to Rule 144(k) under the  Securities  Act (or any
successor provision having similar effect) or (ii) a "No-Action Letter" from the
staff of the SEC stating that the SEC would not recommend  enforcement action if
the Registrable  Securities  included in such Shelf  Registration were sold in a
public sale other than pursuant to an effective registration statement.

               2.4.  Underwritten Offerings.

                    (a) Demand Underwritten Offerings.  If requested by the sole
or lead managing Underwriter for any Underwritten  Offering effected pursuant to
a Demand  Registration,  the Company  shall enter into a customary  underwriting
agreement  with  the  Underwriters  for  such  offering,  such  agreement  to be
reasonably  satisfactory in substance and form to the Company and each Holder of
Registrable  Securities  participating  in such  offering  and to  contain  such
representations  and  warranties  by the  Company  and such  other  terms as are
generally prevailing in agreements of that type, including,  without limitation,
indemnification  and  contribution  to the effect and to the extent  provided in
Section 5.

                    (b)  Holders  of  Registrable  Securities to be  Parties  to
Underwriting Agreement.  The Holders of Registrable Securities to be distributed
by Underwriters in an Underwritten  Offering  contemplated by Section 2 shall be
parties to the underwriting  agreement between the Company and such Underwriters
and may, at such Holders' option, require that any or all of the representations
and warranties  by, and the other  agreements on the part of, the Company to and
for the benefit of such  Underwriters  shall also be made to and for the benefit
of such Holders of Registrable  Securities and that any or all of the conditions
precedent  to the  obligations  of such  Underwriters  under  such  underwriting
agreement  be  conditions  precedent  to the  obligations  of  such  Holders  of
Registrable  Securities;  provided,  however,  that  the  Company  shall  not be
required  to make any  representations  or  warranties  with  respect to written
information  specifically  provided  by a selling  Holder for  inclusion  in the
Registration  Statement. No Holder shall be required to make any representations
or  warranties  to,  or  agreements  with,  the  Company  or (in the  case of an
Incidental Registration) the Underwriters other than representations, warranties
or agreements  regarding such Holder, such Holder's  Registrable  Securities and
such Holder's intended method of disposition.

                    (c)    Participation    in    Underwritten     Registration.
Notwithstanding  anything  herein to the contrary,  no Person may participate in
any  underwritten  registration  hereunder unless such Person (i) agrees to sell
its  securities on the same terms and  conditions  provided in any  underwritten


                                       11




arrangements  approved  by  the  Persons  entitled  hereunder  to  approve  such
arrangement  and (ii)  accurately  completes and executes in a timely manner all
questionnaires,   powers   of   attorney,   indemnities,   custody   agreements,
underwriting  agreements and other documents reasonably required under the terms
of such underwriting arrangements.

               2.5.  Expenses.  The Company shall pay all  Registration Expenses
in connection  with any Demand  Registration,  Incidental  Registration or Shelf
Registration whether or not such registration shall become effective and whether
or not all Registrable  Securities  originally  requested to be included in such
registration  are  withdrawn  or  otherwise  ultimately  not  included  in  such
registration,  except as otherwise  provided with respect to a Withdrawn Request
and a Withdrawn Demand Registration in Section 2.1(a).

               2.6.  Conversions; Exercises.  Notwithstanding  anything  to  the
contrary herein, in order for any Registrable  Securities that are issuable upon
the  exercise of  conversion  rights,  options or warrants to be included in any
registration  pursuant  to Section 2 hereof,  the  exercise  of such  conversion
rights,  options or warrants must be effected no later than immediately prior to
the closing of any sales under the Registration Statement pursuant to which such
Registrable Securities are to be sold.

               2.7.  Registration  Eligibility.  The  Company  and  each Initial
Holder  acknowledge  that the Company is operating on the date hereof pursuant a
No-Action  Letter  from the SEC in the form  attached  hereto as  Exhibit A (the
"No-Action Letter"),  which may limit the Company's ability to have Registration
Statements  covering  Registrable  Securities  declared effective by the SEC. In
light of the  foregoing,  the Company and the Initial  Holders agree that if the
Company,  solely  by  virtue  of the  limitations  expressly  set  forth  in the
No-Action  Letter,  is  unable  to  have  any  Registration  Statement  covering
Registrable  Securities  declared effective by the SEC, the Company shall not be
in breach of its obligation to register Registrable  Securities pursuant to this
Agreement if, and only, if during the  effectiveness of this Agreement  (whether
or not a Request is pending) the Company is using its best efforts to remedy the
condition  giving rise to such  limitations  expressed in the No-Action  Letter,
which "best efforts" shall include,  but not be limited to, (a) seeking  further
effective  waivers or no-action  relief (to the extent,  if any, then  required)
from the SEC no later than the  earlier of (i) the date thirty (30) days after a
Request  is made to  register  Registrable  Securities  and (ii) 120 days  after
December 31, 2004 (and,  to the extent such relief is not granted,  seeking such
waivers or no-action relief on a no less frequent basis than annually  following
each prior request until such relief is granted), to the effect that the Company
may register the Registrable  Securities with the SEC without  compliance by the
Company with the requirement to file historical audited financial statements for
the CSD, and (b) taking such other  actions as are  reasonably  requested by the
Holders or that would  otherwise  reasonably be expected to allow the Company to
register Registrable Securities without complying with SEC rules and regulations
concerning the filing of historical  audited  financial  statements for the CSD.
The Company shall not seek no-action or other relief from the SEC with regard to
the  registration of any other securities of the Company unless at the same time
and on at least as favorable a basis the Company seeks relief with regard to the
registration of Registrable Securities.


                                       12




          3.   HOLDBACK ARRANGEMENTS.

               3.1.  Restrictions on Sale by Holders of Registrable  Securities.
Each Holder of Registrable Securities agrees, by acquisition of such Registrable
Securities,  if  timely  requested  in  writing  by the  sole or  lead  managing
Underwriter,  not to make any short  sale of,  loan,  grant any  option  for the
purchase of or effect any public sale or  distribution,  of any of the Company's
equity  securities  (or  any  security   convertible  into  or  exchangeable  or
exercisable for any of the Company's equity  securities)  during the time period
reasonably  requested by the sole or lead managing  Underwriter not to exceed 90
days, beginning on the effective date of the applicable  registration  statement
(except as part of such  underwritten  registration or pursuant to registrations
on Forms S-4 or S-8 or any  successor  form to such  forms),  unless the sole or
lead  Managing  Underwriter  in such  Underwritten  Offering  otherwise  agrees;
provided,  however,  that to the  extent the  Company or the sole lead  Managing
Underwriter  releases any Person from the foregoing  restrictions in whole or in
part it shall,  on the same day,  notify the Initial  Holder of such release and
such parties shall automatically be released to the same extent.

               3.2.  Restrictions on Sale by the Company and Others. The Company
and McKim agree that if timely requested in writing by the sole or lead managing
Underwriter in an Underwritten  Offering of any Registrable  Securities,  not to
make any short sale of, loan, grant any option for the purchase of or effect any
public sale or  distribution of any of the Company's  equity  securities (or any
security  convertible  into  or  exchangeable  or  exercisable  for  any  of the
Company's equity securities) during the nine business days (as such term is used
in Rule 10b-6  under the  Exchange  Act)  prior to,  and during the time  period
reasonably  requested by the sole or lead managing Underwriter not to exceed 180
days, beginning on the effective date of the applicable  registration  statement
(except as part of such  underwritten  registration or pursuant to registrations
on Forms S-4 or S-8 or any  successor  form to such  forms),  unless the sole or
lead Managing  Underwriter in such Underwritten  Offering  otherwise agrees. The
Company will use its  reasonable  best efforts to cause each director or officer
of the Company and each  holder of 5% or more of the equity  securities  (or any
security  convertible  into or exchangeable or exercisable for any of its equity
securities) of the Company purchased from the Company at any time after the date
of this  Agreement  (other than in a registered  public  offering or in a public
sale) to so agree.

          4.  REGISTRATION PROCEDURES.

               4.1.  Obligations  of  the  Company.   Whenever  the  Company  is
required  to  effect  the  registration  of  Registrable  Securities  under  the
Securities Act pursuant to Section 2 of this  Agreement,  the Company shall,  as
expeditiously as possible:

                    (a)  prepare and  file with  the SEC  (promptly,  and in any
event  within  60 days  after  receipt  of a  request  to  register  Registrable
Securities) the requisite  Registration  Statement to effect such  registration,
which  Registration  Statement shall comply as to form in all material  respects
with  the  requirements  of  the  applicable  form  and  include  all  financial
statements required by the SEC to be filed therewith,  and the Company shall use
its best efforts,  consistent with its obligations  under Section 2.7 hereof and
applicable law, to cause such Registration  Statement to become effective within


                                       13




120  days  after  receipt  of a  request  to  register  Registrable  Securities;
provided,  that the Company may discontinue  any  registration of its securities
that are not Registrable  Securities,  and, under the circumstances specified in
Section 2.2, its securities  that are  Registrable  Securities.  Before filing a
Registration  Statement or Prospectus or any amendments or supplements  thereto,
or comparable  statements under securities or blue sky laws of any jurisdiction,
the Company  shall (i) provide  Holders'  Counsel  and any other  Inspector  (as
defined  below) with an adequate and  appropriate  opportunity to participate in
the  preparation of such  Registration  Statement and each  Prospectus  included
therein (and each amendment or supplement thereto or comparable statement) to be
filed with the SEC, which  documents  shall be subject to the review and comment
of  Holders'  Counsel,  and (ii) not file  any such  Registration  Statement  or
Prospectus (or amendment or supplement thereto or comparable statement) with the
SEC to which Holder's  Counsel,  any selling Holder or any other Inspector shall
have reasonably  objected on the grounds that such filing does not comply in all
material respects with the requirements of the Securities Act or of the rules or
regulations thereunder;

                    (b)  prepare  and  file  with the  SEC  such  amendments and
supplements to such Registration Statement and the Prospectus used in connection
therewith as may be necessary (i) to keep such Registration Statement effective,
and (ii) to comply with the provisions of the Securities Act with respect to the
disposition  of  all  Registrable   Securities   covered  by  such  Registration
Statement,  in each case until such time as all of such  Registrable  Securities
have been disposed of in accordance with the intended  methods of disposition by
the seller(s) thereof set forth in such Registration Statement;

                    (c)  furnish,   without  charge,   to  each  selling  Holder
of such Registrable  Securities and each Underwriter,  if any, of the securities
covered  by  such  Registration  Statement,   such  number  of  copies  of  such
Registration  Statement,  each  amendment and  supplement  thereto (in each case
including  all  exhibits),  and the  Prospectus  included  in such  Registration
Statement  (including  each  preliminary  Prospectus)  in  conformity  with  the
requirements of the Securities Act, and other documents,  as such selling Holder
and Underwriter may reasonably request in order to facilitate the public sale or
other  disposition of the  Registrable  Securities  owned by such selling Holder
(the Company hereby  consenting to the use in accordance  with applicable law of
each such  Registration  Statement  (or  amendment or  post-effective  amendment
thereto) and each such  Prospectus  (or  preliminary  prospectus  or  supplement
thereto)  by  each  such  selling  Holder  of  Registrable  Securities  and  the
Underwriters,  if  any,  in  connection  with  the  offering  and  sale  of  the
Registrable Securities covered by such Registration Statement or Prospectus);

                    (d) prior to any public offering of Registrable  Securities,
use its best efforts to register or qualify all Registrable Securities and other
securities covered by such Registration Statement under such other securities or
blue  sky  laws of such  jurisdictions  as any  selling  Holder  of  Registrable
Securities  covered by such Registration  Statement or the sole or lead managing
Underwriter,  if any, may  reasonably  request to enable such selling  Holder to
consummate the disposition in such  jurisdictions of the Registrable  Securities
owned by such selling Holder and to continue such  registration or qualification
in effect in each such jurisdiction for as long as such  Registration  Statement
remains in effect (including through new filings or amendments or renewals), and
do any and all other acts and things  which may be  necessary  or  advisable  to
enable  any  such  selling  Holder  to  consummate   the   disposition  in  such
jurisdictions of the Registrable Securities owned by such selling Holder;


                                       14




                    (e) use its best  efforts  to obtain  all  other  approvals,
consents,  exemptions  or  authorizations  from such  governmental  agencies  or
authorities  as  may  be  necessary  to  enable  the  selling  Holders  of  such
Registrable  Securities  to  consummate  the  disposition  of  such  Registrable
Securities;

                    (f)  notify  Holders'  Counsel,  each  Holder of Registrable
Securities covered by such Registration  Statement and the sole or lead managing
Underwriter,  if any: (i) when the  Registration  Statement,  any  pre-effective
amendment,  the  Prospectus  or any  prospectus  supplement  related  thereto or
post-effective  amendment to the Registration Statement has been filed and, with
respect to the Registration Statement or any post-effective  amendment, when the
same  has  become  effective,  (ii)  of  any  request  by the  SEC or any  state
securities  or  blue  sky  authority  for   amendments  or  supplements  to  the
Registration  Statement  or the  Prospectus  related  thereto or for  additional
information,  (iii) of the issuance by the SEC of any stop order  suspending the
effectiveness of the  Registration  Statement or the initiation or threat of any
proceedings  for  that  purpose,  (iv)  of the  receipt  by the  Company  of any
notification  with  respect  to  the  suspension  of  the  qualification  of any
Registrable  Securities  for sale under the  securities  or blue sky laws of any
jurisdiction  or the initiation of any  proceeding for such purpose,  (v) of the
existence of any fact of which the Company becomes aware or the happening of any
event  which  results in (A) the  Registration  Statement  containing  an untrue
statement of a material fact or omitting to state a material fact required to be
stated therein or necessary to make any statements therein not misleading or (B)
the  Prospectus  included in such  Registration  Statement  containing an untrue
statement of a material fact or omitting to state a material fact required to be
stated therein or necessary to make any statements  therein, in the light of the
circumstances  under which they were made, not  misleading,  (vi) if at any time
the  representations and warranties  contained in any underwriting  agreement in
respect of such offering cease to be true and correct in all material  respects,
and  (vii)  of the  Company's  reasonable  determination  that a  post-effective
amendment to a Registration  Statement would be appropriate or that there exists
circumstances  not yet  disclosed to the public  which make further  sales under
such   Registration   Statement   inadvisable   pending  such   disclosure   and
post-effective amendment; and, if the notification relates to an event described
in any of the clauses (ii) through  (vii) of this  Section  4.1(f),  the Company
shall  promptly  prepare  a  supplement  or  post-effective  amendment  to  such
Registration  Statement  or  related  Prospectus  or any  document  incorporated
therein  by  reference  or file any  other  required  document  so that (1) such
Registration Statement shall not contain any untrue statement of a material fact
or omit to state a material fact  required to be stated  therein or necessary to
make the statements  therein not  misleading and (2) as thereafter  delivered to
the  purchasers  of the  Registrable  Securities  being  sold  thereunder,  such
Prospectus  shall not include an untrue  statement of a material fact or omit to
state a material  fact  required to be stated  therein or  necessary to make the
statements therein in the light of the circumstances  under which they were made
not misleading (and shall furnish to each such Holder and each  Underwriter,  if
any,  a  reasonable  number of  copies of such  Prospectus  so  supplemented  or
amended);  and if the notification relates to an event described in clause (iii)
of this Section 4.1(f), the Company shall take all reasonable action required to
prevent the entry of such stop order or to remove it if entered;

                    (g)  make available  for inspection by any selling Holder of
Registrable Securities,  any sole or lead managing Underwriter  participating in
any disposition  pursuant to such Registration  Statement,  Holders' Counsel and


                                       15




any  attorney,  accountant  or other  agent  retained  by any such seller or any
Underwriter  (each, an "Inspector" and,  collectively,  the  "Inspectors"),  all
financial and other records, pertinent corporate documents and properties of the
Company  and any  subsidiaries  thereof  as may be in  existence  at  such  time
(collectively,  the  "Records")  as shall be  necessary,  in the opinion of such
Holders' and such Underwriters'  respective  counsel, to enable them to exercise
their due  diligence  responsibility  and to conduct a reasonable  investigation
within the  meaning  of the  Securities  Act,  and cause the  Company's  and any
subsidiaries'  officers,  directors and employees,  and the  independent  public
accountants of the Company,  to supply all information  reasonably  requested by
any such Inspectors in connection with such Registration Statement;

                    (h) obtain an opinion from the Company's counsel and a "cold
comfort"  letter from the  Company's  independent  public  accountants  who have
certified  the  Company's  financial  statements  included  or  incorporated  by
reference in such Registration  Statement, in each case dated the effective date
of  such  Registration   Statement  (and  if  such   registration   involves  an
Underwritten  Offering,  dated the date of the  closing  under the  underwriting
agreement),  in  customary  form and covering  such  matters as are  customarily
covered by such opinions and "cold comfort" letters delivered to underwriters in
underwritten  public  offerings,  which  opinion and letter shall be  reasonably
satisfactory  to the  sole  or lead  managing  Underwriter,  if any,  and to the
Majority Holders of the Registration,  and furnish to each Holder  participating
in the  offering  and to each  Underwriter,  if any, a copy of such  opinion and
letter addressed to such Holder (in the case of the opinion) and Underwriter (in
the case of the opinion and the "cold comfort" letter);

                    (i)  provide a CUSIP  number for all Registrable  Securities
and provide and cause to be  maintained a transfer  agent and  registrar for all
such Registrable  Securities  covered by such  Registration  Statement not later
than the effectiveness of such Registration Statement;

                    (j)  otherwise use  its  best  efforts to  comply  with  all
applicable rules and regulations of the SEC and any other governmental agency or
authority  having  jurisdiction  over the  offering,  and make  available to its
security  holders,  as soon as reasonably  practicable but no later than 90 days
after the end of any 12-month  period,  an earnings  statement (i) commencing at
the end of any month in which Registrable Securities are sold to Underwriters in
an Underwritten Offering and (ii) commencing with the first day of the Company's
calendar month next  succeeding  each sale of Registrable  Securities  after the
effective date of a Registration  Statement,  which  statement  shall cover such
12-month periods, in a manner which satisfies the provisions of Section 11(a) of
the Securities Act and Rule 158 thereunder;

                    (k)  if  so  requested  by  the  Majority  Holders  of   the
Registration,  use its best efforts to cause all such Registrable  Securities to
be (i) duly included for quotation on the Nasdaq Stock Market's  National Market
(the "Nasdaq National  Market") or listed on the principal  national  securities
exchange  on  which  the  Company's  similar  securities  are  then  listed,  if
applicable, or (ii) if securities of the Company are not at the time included on
the Nasdaq National Market or listed on any national  securities exchange (or if
the listing of Registrable  Securities is not permitted  under the rules of each
national securities exchange on which the Company's securities are then listed),
on the National Nasdaq Market or a national  securities  exchange  designated by
the Majority Holders of the Registration;


                                       16




                    (l)  enter into and perform customary agreements (including,
if  applicable,  an  underwriting  agreement  in  customary  form)  and  provide
officers' certificates and other customary closing documents;

                    (m)  cooperate with  each   selling  Holder  of  Registrable
Securities  and  each  Underwriter  participating  in the  disposition  of  such
Registrable  Securities  and their  respective  counsel in  connection  with any
filings  required  to be made with the NASD and make  reasonably  available  its
employees  and  personnel and  otherwise  provide  reasonable  assistance to the
Underwriters  (taking into account the needs of the Company's businesses and the
requirements  of  the  marketing   process)  in  the  marketing  of  Registrable
Securities in any Underwritten Offering;

                    (n) cooperate  with  the  selling  Holders  of   Registrable
Securities and the sole or lead managing Underwriter,  if any, to facilitate the
timely  preparation  and delivery of  certificates  not bearing any  restrictive
legends  representing  the  Registrable  Securities  to be sold,  and cause such
Registrable Securities to be issued in such denominations and registered in such
names  in  accordance  with  the  underwriting  agreement  prior  to any sale of
Registrable  Securities to the Underwriters or, if not an Underwritten Offering,
in  accordance  with the  instructions  of the  selling  Holders of  Registrable
Securities  at least  three  business  days  prior  to any  sale of  Registrable
Securities;

                    (o)  keep  each  selling  Holder of  Registrable  Securities
advised in writing as to the initiation and progress of any  registration  under
Section 2 hereunder;

                    (p) furnish to each Holder participating in the offering and
the sole or lead managing  Underwriter,  if any,  without  charge,  at least one
manually-signed  copy  of the  Registration  Statement  and  any  post-effective
amendments thereto,  including financial statements and schedules, all documents
incorporated therein by reference and all exhibits (including those deemed to be
incorporated by reference);

                    (q)  if requested by the  sole or lead managing Underwriter,
if any, or any selling Holder of Registrable Securities, promptly incorporate in
a prospectus supplement or post-effective  amendment such information concerning
such Holder of Registrable  Securities,  the Underwriters or the intended method
of distribution  as the sole or lead managing  Underwriter or the selling Holder
of Registrable  Securities  reasonably requests to be included therein and as is
appropriate  in the  reasonable  judgment  of the  Company,  including,  without
limitation,  information with respect to the number of shares of the Registrable
Securities  being  sold to the  Underwriters,  the  purchase  price  being  paid
therefor  by such  Underwriters  and  with  respect  to any  other  terms of the
Underwritten Offering of the Registrable Securities to be sold in such offering;
make all  required  filings  of such  Prospectus  supplement  or  post-effective
amendment  as  soon  as  notified  of the  matters  to be  incorporated  in such
Prospectus  supplement  or  post-effective  amendment;  and  supplement  or make
amendments  to any  Registration  Statement  if  requested  by the  sole or lead
managing Underwriter of such Registrable Securities; and


                                       17




                    (r)  use its best efforts to take all other  steps necessary
to expedite or facilitate the  registration  and  disposition of the Registrable
Securities contemplated hereby.

               4.2.  Seller  Information.  The Company  may require each selling
Holder of Registrable  Securities as to which any registration is being effected
to  furnish  to the  Company  such  information  regarding  such  seller and the
disposition of such  securities as the Company may from time to time  reasonably
request in writing; provided,  however, that such information shall be used only
in  connection  with  such  Registration.   If  any  Registration  Statement  or
comparable  statement  under  "blue  sky" laws  refers to any  Holder by name or
otherwise as the Holder of any securities of the Company, then such Holder shall
have the right to require (i) the  insertion  therein of  language,  in form and
substance  satisfactory  to such Holder and the Company,  to the effect that the
holding  by  such  Holder  of  such  securities  is  not  to be  construed  as a
recommendation  by  such  Holder  of the  investment  quality  of the  Company's
securities covered thereby and that such holding does not imply that such Holder
will assist in meeting any future financial requirements of the Company and (ii)
in the event that such  reference  to such Holder by name or otherwise is not in
the judgment of the Company,  as advised by counsel,  required by the Securities
Act or any similar  federal  statute or any state "blue sky" or  securities  law
then in force, the deletion of the reference to such Holder.

               4.3.   Notice  to  Discontinue.   Each   Holder  of   Registrable
Securities  agrees by acquisition of such Registrable  Securities that, (a) upon
receipt of any notice from the Company of the happening of any event of the kind
described in Section 4.1(f)(ii) through 4.1(f)(vii), such Holder shall forthwith
discontinue  disposition of Registrable  Securities pursuant to the Registration
Statement  covering such  Registrable  Securities until such Holder's receipt of
the copies of the  supplemented  or amended  prospectus  contemplated by Section
4.1(f) and, (b) if so directed by the Company,  such Holder shall deliver to the
Company (at the Company's expense) all copies, other than permanent file copies,
then in such Holder's  possession,  of the Prospectus  covering such Registrable
Securities  which is  current  at the time of  receipt  of such  notice.  If the
Company  shall give any such notice,  the Company shall extend the period during
which such Registration Statement shall be maintained effective pursuant to this
Agreement  (including,  without  limitation,  the period  referred to in Section
4.1(b)) by the number of days during the period from and  including  the date of
the giving of such notice  pursuant to Section  4.1(f) to and including the date
when the Holder shall have  received the copies of the  supplemented  or amended
prospectus contemplated by and meeting the requirements of Section 4.1(f).

          5.  INDEMNIFICATION; CONTRIBUTION.

               5.1.  Indemnification  by  the  Company.  The  Company  agrees to
indemnify and hold harmless, to the fullest extent permitted by law, each Holder
of  Registrable  Securities,  its  officers,   directors,   partners,   members,
shareholders,    employees,   Affiliates,   advisers,   attorneys   and   agents
(collectively,  "Agents") and each Person who controls  such Holder  (within the
meaning of the Securities Act) and its Agents with respect to each  registration
which has been effected pursuant to this Agreement,  against any and all losses,
claims,  damages  or  liabilities,  joint or  several,  actions  or  proceedings
(whether commenced or threatened) in respect thereof,  and expenses (as incurred
or suffered and including,  but not limited to, any and all expenses incurred in


                                       18




investigating,  preparing or defending  any  litigation or  proceeding,  whether
commenced  or  threatened,  and the  reasonable  fees,  disbursements  and other
charges of legal counsel) in respect thereof (collectively,  "Claims"),  insofar
as such  Claims  arise out of or are based  upon any  untrue or  alleged  untrue
statement  of a  material  fact  contained  in  any  Registration  Statement  or
Prospectus  (including  any  preliminary,  final or summary  prospectus  and any
amendment  or  supplement  thereto)  related  to any  such  registration  or any
omission  or alleged  omission  to state a material  fact  required to be stated
therein or  necessary  to make the  statements  therein not  misleading,  or any
violation  by the  Company  of the  Securities  Act or any  rule  or  regulation
thereunder applicable to the Company and relating to action or inaction required
of the Company in connection with any such registration, or any qualification or
compliance  incident thereto;  provided,  however,  that the Company will not be
liable in any such case to the extent that any such  Claims  arise out of or are
based upon any untrue  statement or alleged untrue  statement of a material fact
or omission or alleged  omission of a material fact so made in reliance upon and
in  conformity  with  written  information  furnished to the Company by a Holder
expressly for use therein.  The Company shall also indemnify any Underwriters of
the Registrable  Securities,  their Agents and each Person who controls any such
Underwriter  (within  the meaning of the  Securities  Act) to the same extent as
provided above with respect to the indemnification of the Holders of Registrable
Securities.  Such indemnity shall remain in full force and effect  regardless of
any  investigation  made by or on behalf of any  Person who may be  entitled  to
indemnification  pursuant to this  Section 5 and shall  survive the  transfer of
securities by such Holder or Underwriter.

               5.2.   Indemnification  by  Holders. Each Holder, if  Registrable
Securities  held by it are included in the securities as to which a registration
is being  effected,  agrees to,  severally  and not jointly,  indemnify and hold
harmless, to the fullest extent permitted by law, the Company, its directors and
officers,  each other Person who  participates as an Underwriter in the offering
or sale of such  securities  and its Agents and each  Person  who  controls  the
Company  (within  the  meaning  of either  Section 15 of the  Securities  Act of
Section 20 of the  Exchange  Act)  against any and all  Claims,  insofar as such
Claims arise out of or are based upon any untrue or alleged untrue  statement of
a material fact contained in any Registration Statement or Prospectus (including
any  preliminary,  final or summary  prospectus  and any amendment or supplement
thereto)  related to such  registration,  or any omission or alleged omission to
state therein a material fact required to be stated therein or necessary to make
the statements  therein not misleading,  to the extent,  but only to the extent,
that such untrue  statement or alleged  untrue  statement or omission or alleged
omission was made in reliance  upon and in conformity  with written  information
furnished  to the  Company  by a Holder  expressly  for use  therein;  provided,
however,  that the  aggregate  amount which any such Holder shall be required to
pay pursuant to this Section 5.2 shall in no event be greater than the amount of
the net  proceeds  received  by such  Holder  upon the  sale of the  Registrable
Securities  pursuant to the  Registration  Statement  giving rise to such Claims
less all amounts previously paid by such Holder with respect to any such Claims.
Such  indemnity  shall  remain  in  full  force  and  effect  regardless  of any
investigation  made  by or on  behalf  of any  Person  who  may be  entitled  to
indemnification  pursuant to this  Section 5 and shall  survive the  transfer of
securities by such Holder or Underwriter.

               5.3.   Conduct of  Indemnification  Proceedings.  Promptly  after
receipt by an indemnified  party of notice of any Claim or the  commencement  of


                                       19




any  action  or  proceeding  involving  a  Claim  under  this  Section  5,  such
indemnified party shall, if a claim in respect thereof is to be made against the
indemnifying  party pursuant to Section 5, (a) notify the indemnifying  party in
writing of the Claim or the commencement of such action or proceeding; provided,
that the  failure of any  indemnified  party to provide  such  notice  shall not
relieve the indemnifying  party of its obligations  under this Section 5, except
to the extent the  indemnifying  party is  materially  and  actually  prejudiced
thereby and shall not relieve the indemnifying party from any liability which it
may have to any  indemnified  party otherwise than under this Section 5, and (b)
permit such indemnifying  party to assume the defense of such claim with counsel
reasonably  satisfactory to the indemnified party;  provided,  however, that any
indemnified  party  shall  have the  right to  employ  separate  counsel  and to
participate  in the  defense of such  claim,  but the fees and  expenses of such
counsel  shall  be at the  expense  of such  indemnified  party  unless  (i) the
indemnifying party has agreed in writing to pay such fees and expenses, (ii) the
indemnifying  party  shall have  failed to assume the  defense of such claim and
employ counsel reasonably  satisfactory to such indemnified party within 20 days
after receiving  notice from such indemnified  party that the indemnified  party
believes it has failed to do so, or (C) in the  reasonable  judgment of any such
indemnified  party,  based upon advice of counsel,  a conflict of interest shall
exist between such indemnified party and the indemnifying  party with respect to
such claims; it being  understood,  however,  that the indemnifying  party shall
not,  in  connection  with any one such  action or  separate  but  substantially
similar or  related  actions in the same  jurisdiction  arising  out of the same
general  allegations or  circumstances,  be liable for the  reasonable  fees and
expenses of more than one  separate  firm of  attorneys  (in addition to no more
than one firm of local counsel) at any time for all such indemnified parties. No
indemnifying  party  shall be liable  for any  settlement  of any such  claim or
action  effected  without  its  written  consent,  which  consent  shall  not be
unreasonably  withheld.  No indemnifying party shall, without the consent of the
indemnified party, which consent shall not be unreasonable withheld,  consent to
entry of any  judgment  or enter into any  settlement  of any claim or action in
respect of which indemnification or contribution may be sought hereunder, unless
such settlement,  (x) includes an unconditional release of the indemnified party
from all liability  arising out of such action or claim,  (y) does not include a
statement as to or an admission of fault, culpability or a failure to act, by or
on behalf of any indemnified  party,  and (z) does not provide for any action on
the part of any party  other than the  payment of money  damages  which is to be
paid in full by the indemnifying party.

               5.4. Contribution. If the indemnification provided for in Section
5.1 or 5.2 from the  indemnifying  party for any reason is unavailable to (other
than by reason of  exceptions  provided  therein),  or is  insufficient  to hold
harmless  an  indemnified  party  hereunder  in respect  of any Claim,  then the
indemnifying  party,  in lieu of  indemnifying  such  indemnified  party,  shall
contribute to the amount paid or payable by such  indemnified  party as a result
of such Claim in such proportion as is appropriate to reflect the relative fault
of the  indemnifying  party, on the one hand, and the indemnified  party, on the
other hand, in connection with the actions which resulted in such Claim, as well
as any other  relevant  equitable  considerations.  The  relative  fault of such
indemnifying  party and  indemnified  party shall be determined by reference to,
among other  things,  whether any action in  question,  including  any untrue or
alleged untrue  statement of a material fact or omission or alleged  omission to
state a material fact, has been made by, or relates to information  supplied by,
such indemnifying  party or indemnified party, and the parties' relative intent,
knowledge,  access to  information  and  opportunity  to correct or prevent such
action.  If,  however,  the foregoing  allocation is not permitted by applicable


                                       20




law, then each indemnifying party shall contribute to the amount paid or payable
by such  indemnified  party in such  proportion as is appropriate to reflect not
only such  relative  faults but also the relative  benefits of the  indemnifying
party  and  the  indemnified  party  as  well as any  other  relevant  equitable
considerations.

               5.5.    Indemnification   Payments.    The  indemnification   and
contribution  required by this  Section 5 shall be made by periodic  payments of
the amount thereof  during the course of any  investigation  or defense,  as and
when bills are received or any expense, loss, damage or liability is incurred.

               5.6.  Other Indemnification.   Indemnification  similar  to  that
specified in the preceding Sections 5.1 and 5.2 (with appropriate modifications)
shall be given by the Company and each selling Holder of Registrable  Securities
with respect to any required  registration or other  qualification of securities
under any  Federal or state law or  regulation  of any  governmental  authority,
other than the Securities Act. The indemnity  agreements  contained herein shall
be in addition to any other rights to  indemnification or contribution which any
indemnified party may have pursuant to law or contract.

          6.  General Provisions Regarding Registrations.

               6.1.  Adjustments Affecting  Registrable Securities.  The Company
agrees  that it  shall  not  effect  or  permit  to  occur  any  combination  or
subdivision of shares which would adversely  affect the ability of the Holder of
any  Registrable  Securities  to  include  such  Registrable  Securities  in any
registration  contemplated  by  this  Agreement  or the  marketability  of  such
Registrable Securities in any such registration.

               6.2.  Registration  Rights  to  Others.  The  Company  represents
and warrants that it is not  currently a party to any agreement  with respect to
its securities granting  registration rights to Persons. If the Company shall at
any time hereafter provide to any holder of any securities of the Company rights
with respect to the  registration of such  securities  under the Securities Act,
(i) such rights  shall not be in conflict  with or  adversely  affect any of the
rights  provided  in this  Agreement  to the Holders and (ii) if such rights are
provided on terms or conditions more favorable to such holder than the terms and
conditions  provided in this  Agreement,  the Company  shall  provide (by way of
amendment  to  this  Agreement  or  otherwise)  such  more  favorable  terms  or
conditions to the Holders.

               6.3.  Availability of Information;  Rule 144;  Rule  144A;  Other
Exemptions. The Company covenants that it shall timely file any reports required
to be filed by it under the Securities Act or the Exchange Act  (including,  but
not limited  to, the reports  under  Sections 13 and 15(d) of the  Exchange  Act
referred to in subparagraph  (c) of Rule 144 under the Securities Act), and that
it shall take such further  action as any Holder of  Registrable  Securities may
reasonably request,  all to the extent required from time to time to enable such
Holder to sell Registrable  Securities without registration under the Securities
Act within the  limitation of the  exemptions  provided by (i) Rule 144 and Rule
144A under the  Securities  Act, as such rules may be amended from time to time,
or (ii) any other rule or  regulation  now existing or hereafter  adopted by the


                                       21




SEC. Upon the request of any Holder of Registrable Securities, the Company shall
deliver to such Holder a written  statement as to whether it has  complied  with
such requirements.

          7.  PROVISIONS APPLICABLE TO SECURITYHOLDERS.

               7.1.  General  Restriction.  Prior to the earlier of (i) 270 days
after the exercise of all of the Warrants or (ii)  December 31, 2009 (the period
ending on the earlier of such dates being the  referred to below as the "Co-Sale
Period"), McKim may not, directly or indirectly, sell, assign, transfer, pledge,
bequeath,  hypothecate,  mortgage,  grant any proxy with  respect  to, or in any
other way  encumber or  otherwise  dispose of  ("Convey"),  any shares of Common
Stock except pursuant to the provisions of this Article 7.

               7.2.  Right of Co-Sale. (a) If  during the Co-Sale  Period, McKim
desires to Convey shares of Common Stock to any Person (the  "Purchaser"),  each
Holder shall have the right to require, as a condition to such Conveyance,  that
the Purchaser  purchase from such Holder at the same price and on the same terms
and  conditions as involved in such sale or  disposition by McKim (the "Purchase
Offer") the number of shares of Common  Stock owned by such Holder  equal to the
aggregate  number of shares of Common  Stock  proposed  to be  purchased  by the
Purchaser  from McKim  multiplied  by a fraction,  the numerator of which is the
number  of  shares  of  Common  Stock  held of  record  by such  Holder  and the
denominator  of which is the aggregate  number of shares of Common Stock held of
record by McKim and the Holders.  The amount of shares of Common Stock that each
Holder is  entitled  to sell under this  Section 7.2 shall be referred to as its
"Pro Rata Share".  McKim shall  deliver to each Holder not more than 60 days and
not less than 30 days prior to the proposed  Conveyance  to the Purchaser a copy
of the Purchase  Offer,  if in writing,  and a description of all other material
terms and conditions of the Purchase Offer.  Within 25 days after receipt of the
Purchase Offer, a Holder shall give notice to McKim of its intent to sell all or
a portion  of its Pro Rata  Share.  In the event  that a Holder  shall  elect to
participate in any such sale or  disposition,  such Holder shall  communicate in
writing such election to  participate  to McKim,  which  communication  shall be
delivered to McKim  pursuant to Section 8.2 hereof,  and the number of shares of
Common  Stock  to be  Conveyed  by  McKim  to the  Purchaser  shall  be  reduced
accordingly.

                    (b)  McKim  and each  participating  Holder  may, up  to and
including 90 days after but not until at least 60 days after McKim's delivery of
the  notice of the  Purchase  Offer to the  Holders,  Convey any or all of their
shares  of  Common  Stock to the  Purchaser,  in  quantities  and on  terms  and
conditions no more favorable in any material  respect to those  specified in the
Purchase Offer or otherwise disclosed to the Holders,  and the Holders shall not
have the right to require  that the  Purchaser  purchase  any of their shares of
Common Stock as to which they did not exercise their co-sale  rights  hereunder.
If such sale is not  consummated  by the  expiration of such 90 day period,  the
restrictions provided for herein shall again become effective, and no Conveyance
of such shares of Common Stock may be made  thereafter  by McKim  without  again
complying with the requirements of this Section 7.2.

                    (c) The closing of any sale of the  shares of  Common  Stock
by the Holders  and/or  McKim  pursuant to this Section 7.2 shall be held at the
Company's  principal  office at 10:00 a.m.,  local  time,  no later than 30 days
after  the dates of  expiration  of the right to sell  referred  to in  Sections


                                       22




7.2(a) and 7.2(b) hereof,  or at such other time and place as the parties to the
transaction  may agree.  At such  closing,  each  Holder  (if it has  elected to
participate  in accordance  with this Section 7.2) and/or McKim shall Convey all
the shares of Common Stock  purchased by the Purchaser  pursuant to this Section
7.2 free and clear of any Encumbrances  (other than restrictions  imposed by the
organizational  documents of the Company,  including  without  limitation,  this
Agreement,  and pursuant to applicable  federal and state securities  laws), and
each such  Holder  and/or  McKim shall so  represent  and  warrant,  and further
represent and warrant that it is the record and beneficial  owner of such shares
of Common Stock.  The Purchaser  shall deliver at such closing,  in cash by wire
transfer  of  immediately  available  funds,  payment in full to the each of the
Holders and/or McKim for its  respective  portion of such shares of Common Stock
sold.

                    (d)  The  election  by a  Holder not to exercise  its rights
under this Section 7.2 in any one  instance  shall not affect the rights of that
Holder as to any  subsequent  proposed  Conveyance by McKim.  Any  Conveyance by
McKim of any of its shares of Common Stock  without first giving the Holders the
rights described in this Section 7.2 shall be void and of no force or effect.

               7.3.  Permitted Transfers.  Subject to the final proviso of  this
paragraph,  the  provisions  of  Section  7.1  or 7.2  shall  not  apply  to the
Conveyance of Common Stock by McKim (a) in a public  offering  registered  under
the Securities Act; provided; that the Holders shall have had the opportunity to
participate in such offering,  without  limitation (except as expressly provided
in Section 2 hereof) on the number of Registrable Securities covered thereby, in
accordance  with  Section 2 hereof,  (b) in a sale  pursuant  to Rule 144 of the
Securities  Act,  (c)  pursuant to a bona fide  pledge of the Common  Stock to a
nationally  recognized  financial  institution  as  security  for  a  bona  fide
financing  arrangement  by McKim and (d) to any one or more  persons or entities
each of which is a "Permitted Holder" as such term is defined in the Certificate
of Vote in respect of the Series C Preferred Stock as in effect on September 10,
2002 (collectively "Permitted Family Transferees"); provided, however, that such
Permitted Family Transferee(s) shall take such shares of Common Stock subject to
and be fully bound by this  Agreement with the same effect as if it were a party
hereto  and  shall  execute  and  deliver  to the  Company  and each  Holder  an
instrument of accession and such additional documentation as the Company's Board
of  Directors  and the Holders  may  reasonably  require to bind such  Permitted
Family  Transferee in the same manner that McKim is bound under this  Agreement,
and  references  herein to McKim shall be deemed to include  any such  Permitted
Family Transferee(s).

          8.  General.

               8.1. Amendments and Waivers.  The provisions of  this  Agreement,
including  the  provisions  of  this  sentence,  may not be  amended,  modified,
supplemented  or  terminated,  and waivers or consents  to  departures  from the
provisions  hereof may not be given,  without the written consent of the Company
and the Majority Holders and if adverse to McKim, McKim; provided, however, that
no such  amendment,  modification,  supplement,  waiver or consent to  departure
shall reduce the aforesaid  percentage  of  Registrable  Securities  without the
written  consent  of  all  of  the  Holders  of  Registrable  Securities  and no
amendment, modification supplement, waiver or consent that adversely affects the
rights of a  particular  Holder (as opposed to the Holders  generally)  shall be
made or given  without  the  written  consent  of such  particular  Holder;  and
provided   further,   that  nothing   herein  shall   prohibit  any   amendment,


                                       23




modification, supplement, termination, waiver or consent to departure the effect
of which is limited  only to those  Holders who have  agreed to such  amendment,
modification, supplement, termination, waiver or consent to departure.

               8.2.  Notices.  All  notices and  other  communications  provided
for  or  permitted  hereunder  shall  be  made  in  writing  by  hand  delivery,
telecopier,   any  courier  guaranteeing   overnight  delivery  or  first  class
registered  or  certified  mail,  return  receipt  requested,  postage  prepaid,
addressed to the  applicable  party at the address set forth below or such other
address as may  hereafter  be  designated  in writing by such party to the other
parties in accordance with the provisions of this Section:

                  If to the Company:   Clean Harbors, Inc.
                                       1501 Washington Street
                                       Braintree, MA 02185
                                       Attn: Chief Financial Officer
                                       Fax No. (781) 848-1632

                  with copies to:      Davis, Malm & D'Agostine, P.C.
                                       One Boston Place
                                       Boston, MA 02108
                                       Attn: C. Michael Malm
                                       Fax No. (617) 523-6215


                  If to McKim:         Alan S. McKim
                                       c/o Clean Harbors, Inc.
                                       1501 Washington Street
                                       Braintree, MA 02185
                                       Fax No. (781) 848-1632

                  with copies to:      Davis, Malm & D'Agostine, P.C.
                                       One Boston Place
                                       Boston, MA 02108
                                       Attn: C. Michael Malm
                                       Fax No. (617) 523-6215

          If to a Holder, to its address and facsimile set forth on the Schedule
of Holders attached hereto, with copies to such Holder's  representatives as set
forth on the  Schedule of Holders,  or to such other  address  and/or  facsimile
number and/or to the  attention of such other person as the recipient  party has
specified by written notice given to each other party five (5) days prior to the
effectiveness  of  such  change.  All  such  notices  and  communications   (and
deliveries)  shall be deemed to have been duly given:  at the time  delivered by
hand, if personally delivered;  when receipt is acknowledged,  if telecopied; on
the next business day, if timely delivered to a courier  guaranteeing  overnight
delivery;  and five days after being  deposited in the mail, if sent first class
or certified mail, return receipt requested, postage prepaid.


                                       24




               8.3.  Successors and Assigns.  This Agreement shall inure to  the
benefit of and be binding upon the parties  hereto and their  respective  heirs,
successors  and  permitted  assigns  (including  any  permitted   transferee  of
Registrable Securities or the Warrants). Any Holder may assign to any transferee
of its Warrants or Registrable Securities (other than a transferee that acquires
such  Registrable  Securities  or Warrants in a  registered  public  offering or
pursuant  to a sale  under  Rule  144 of the  Securities  Act (or any  successor
rule)), its rights and obligations under this Agreement;  provided,  however, if
any transferee shall take and hold the Warrants or Registrable Securities,  such
transferee  shall  promptly  notify the Company  and by taking and holding  such
Registrable  Securities or the Warrants such transferee  shall  automatically be
entitled to receive the benefits of and be conclusively deemed to have agreed to
be bound by and to perform all of the terms and  provisions of this Agreement as
if it were a party hereto (and shall, for all purposes, be deemed a Holder under
this  Agreement).  If the  Company  shall so  request  any  heir,  successor  or
permitted assign (including any permitted transferee) wishing to avail itself of
the  benefits of this  Agreement  shall agree in writing to acquire and hold the
Registrable  Securities or the Warrants subject to all of the terms hereof.  For
purposes  of this  Agreement,  "successor"  for any entity  other than a natural
person  shall  mean a  successor  to such  entity as a result  of such  entity's
merger,  consolidation,  sale of  substantially  all of its  assets,  or similar
transaction.  Except as provided above or otherwise permitted by this Agreement,
neither this Agreement nor any right,  remedy,  obligation or liability  arising
hereunder or by reason hereof shall be assignable by any Holder, McKim or by the
Company without the consent of the other parties hereto.

               8.4.  Counterparts. This Agreement may be executed in two or more
counterparts,  each of which, when so executed and delivered, shall be deemed to
be an original, but all of which counterparts,  taken together, shall constitute
one and the same instrument.

               8.5.  Descriptive Headings, Etc.  The headings  in this Agreement
are for  convenience of reference  only and shall not limit or otherwise  affect
the meaning of terms  contained  herein.  Unless the  context of this  Agreement
otherwise  requires:  (a) words of any gender  shall be deemed to  include  each
other  gender;  (b) words using the singular or plural number shall also include
the plural or singular number,  respectively;  (c) the words "hereof",  "herein"
and  "hereunder"  and words of similar import when used in this Agreement  shall
refer to this Agreement as a whole and not to any  particular  provision of this
Agreement,  and  Section  and  paragraph  references  are  to the  Sections  and
paragraphs  of  this  Agreement  unless  otherwise   specified;   (d)  the  word
"including"  and words of similar import when used in this Agreement  shall mean
"including,  without  limitation," unless otherwise  specified;  (e) "or" is not
exclusive; and (f) provisions apply to successive events and transactions.

               8.6.  Severability.  In  the event  that  any  one or more of the
provisions,  paragraphs,  words, clauses, phrases or sentences contained herein,
or the application  thereof in any  circumstances,  is held invalid,  illegal or
unenforceable  in any  respect  for  any  reason,  the  validity,  legality  and
enforceability  of any  such  provision,  paragraph,  word,  clause,  phrase  or
sentence  in  every  other  respect  and  of  the  other  remaining  provisions,
paragraphs,  words, clauses, phrases or sentences hereof shall not be in any way
impaired,  it being  intended  that all  rights,  powers and  privileges  of the
parties hereto shall be enforceable to the fullest extent permitted by law.


                                       25




               8.7. CHOICE OF LAW AND VENUE; JURY TRIAL WAIVER.  THE VALIDITY OF
THIS AGREEMENT,  THE CONSTRUCTION,  INTERPRETATION,  AND ENFORCEMENT HEREOF, AND
THE RIGHTS OF THE PARTIES HERETO WITH RESPECT TO ALL MATTERS  ARISING  HEREUNDER
OR RELATED  HERETO SHALL BE  DETERMINED  UNDER,  GOVERNED  BY, AND  CONSTRUED IN
ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK.

          THE  PARTIES  AGREE  THAT  ALL  ACTIONS  OR  PROCEEDINGS   ARISING  IN
CONNECTION  WITH THIS  AGREEMENT  SHALL BE TRIED AND LITIGATED ONLY IN THE STATE
AND FEDERAL  COURTS  LOCATED IN THE COUNTY OF NEW YORK,  STATE OF NEW YORK.  THE
COMPANY,  MCKIM AND THE INITIAL  HOLDERS WAIVE,  TO THE EXTENT  PERMITTED  UNDER
APPLICABLE  LAW,  ANY RIGHT  EACH MAY HAVE TO ASSERT THE  DOCTRINE  OF FORUM NON
CONVENIENS  OR TO OBJECT TO VENUE TO THE  EXTENT  ANY  PROCEEDING  IS BROUGHT IN
ACCORDANCE WITH THIS SECTION 8.7.

          THE  COMPANY,  MCKIM  AND  THE  INITIAL  HOLDERS  HEREBY  WAIVE  THEIR
RESPECTIVE  RIGHTS TO A JURY TRIAL OF ANY CLAIM OR CAUSE OF ACTION BASED UPON OR
ARISING OUT OF THIS AGREEMENT OR ANY OF THE  TRANSACTIONS  CONTEMPLATED  HEREIN,
INCLUDING  CONTRACT CLAIMS,  TORT CLAIMS,  BREACH OF DUTY CLAIMS,  AND ALL OTHER
COMMON LAW OR  STATUTORY  CLAIMS.  EACH OF THE  COMPANY,  MCKIM AND THE  INITIAL
HOLDERS  REPRESENT  THAT EACH HAS REVIEWED  THIS WAIVER AND EACH  KNOWINGLY  AND
VOLUNTARILY  WAIVES  ITS JURY TRIAL  RIGHTS  FOLLOWING  CONSULTATION  WITH LEGAL
COUNSEL. IN THE EVENT OF LITIGATION,  A COPY OF THIS AGREEMENT MAY BE FILED AS A
WRITTEN CONSENT TO A TRIAL BY THE COURT.

               8.8.   Remedies;  Specific  Performance.   The   parties   hereto
acknowledge  that money  damages  would not be an adequate  remedy at law if any
party fails to perform in any material respect any of its obligations hereunder,
and accordingly  agree that each party, in addition to any other remedy to which
it may be  entitled  at law or in equity,  shall be  entitled  to seek to compel
specific performance of the obligations of any other party under this Agreement,
without the posting of any bond, in accordance  with the terms and conditions of
this Agreement in any court  specified in Section 8.7 hereof,  and if any action
should be brought in equity to enforce any of the provisions of this  Agreement,
none of the parties  hereto  shall  raise the defense  that there is an adequate
remedy at law.  Except as  otherwise  provided  by law, a delay or omission by a
party hereto in  exercising  any right or remedy  accruing  upon any such breach
shall not impair the right or remedy or  constitute a waiver of or  acquiescence
in any such  breach.  No remedy  shall be  exclusive  of any other  remedy.  All
available remedies shall be cumulative.

               8.9.   Entire Agreement.  This Agreement,  the Warrants  and  the
Redemption Agreement (collectively,  the "Other Agreements") are intended by the
parties as a final  expression of their  agreement and intended to be a complete
and exclusive statement of the agreement and understanding of the parties hereto


                                       26




in respect of the subject matter  contained  herein.  There are no restrictions,
promises,  representations,  warranties,  covenants or undertakings  relating to
such subject matter,  other than those set forth or referred to herein or in the
Other  Agreements.  This Agreement and the Other Agreements  supersede all prior
agreements and understandings  between the Company and the other parties to this
Agreement with respect to such subject matter.

               8.10.  Further Assurances. Each party hereto shall do and perform
or cause to be done and  performed  all such  further  acts and things and shall
execute and deliver all such other  agreements,  certificates,  instruments  and
documents as any other party hereto reasonably may request in order to carry out
the intent and accomplish the purposes of this Agreement and the consummation of
the transactions contemplated hereby.

               8.11.  Construction.  Each of the Company,  McKim and the Initial
Holders  acknowledge  that it has had the  benefit  of legal  counsel of its own
choice and has been afforded an  opportunity  to review this  Agreement with its
legal counsel and that this Agreement  shall be construed as if jointly  drafted
by the Company, McKim and the Initial Holders.

               8.12. No  Inconsistent  Agreement.  Neither the Company nor McKim
will hereafter enter into any agreement  which is  inconsistent  with the rights
granted to the Holders in this Agreement.

               8.13.  Costs and Attorneys' Fees.  In the event that  any action,
suit or  other  proceeding  is  instituted  concerning  or  arising  out of this
Agreement,  the Company, McKim and the Initial Holders agree that the prevailing
party shall recover from the non-prevailing party all of such prevailing party's
costs and  reasonable  attorneys'  fees  incurred in each and every such action,
suit or other proceeding, including any and all appeals or petitions therefrom.


   [Remainder of this page intentionally left blank. Signature page follows.]












                                       27




          IN WITNESS  WHEREOF,  the parties hereto have caused this Agreement to
be duly executed as of the date first written above.


                                             THE COMPANY

                                             CLEAN HARBORS, INC.


                                             By:  ___________________________
                                                  Name:
                                                  Title







                                             INITIAL HOLDERS

                                             CERBERUS CH LLC

                                             By:  Cerberus Partners, L.P.
                                                  its Managing Member

                                             By:  Cerberus Associates, L.L.C.
                                                  its General Partner

                                             By: ___________________________
                                                 Name:
                                                 Title:







                                        OAK HILL SECURITIES FUND, L.P.

                                        By:  Oak Hill Securities GenPar, L.P.
                                        its General Partner

                                        By:  Oak Hill Securities MGP, Inc.
                                        its General Partner

                                        By: ___________________________
                                            Name:
                                            Title:


                                        OAK HILL SECURITIES FUND II, L.P.

                                        By:  Oak Hill Securities GenPar II, L.P.
                                             its General Partner

                                        By:  Oak Hill Securities MGP II, Inc.
                                             its General Partner

                                        By:  ___________________________
                                             Name:
                                             Title:


                                        LERNER ENTERPRISES, L.P.

                                        By:  Oak Hill Asset Management, Inc.
                                             As advisor and attorney-in-fact to
                                             Lerner Enterprises

                                        By:  ___________________________
                                             Name:
                                             Title:







                                        P&PK FAMILY LTD. PARTNERSHIP

                                        By: Oak Hill Asset Management, Inc.
                                            As advisor and attorney-in-fact to
                                            P&PK Family Ltd. Partnership

                                        By:  ___________________________
                                             Name:
                                             Title:


                                        CARDINAL INVESTMENT PARTNERS I, L.P.

                                        By: As advisor and attorney-in-fact to
                                            Cardinal Investment Partners I, L.P.

                                        By:  Oak Hill Advisors MGP, Inc.
                                             its General Partner

                                        By: ___________________________
                                            Name:
                                            Title:

                                        BASSO HOLDINGS LTD.
                                        (f/k/a AIG DKR SoundShore Holdings Ltd.)


                                        By: __________________________
                                            Howard I. Fischer
                                            Authorized Signatory







                                             MCKIM


                                             By:  ___________________________
                                                  Name: Alan S. McKim

                                             Alan S. McKim's Children's Trust


                                             By:  ___________________________
                                                  C. Michael Malm, Trustee

                                             By:  ___________________________
                                                  Carol R. Cohen, Trustee







                               SCHEDULE OF HOLDERS



             Holder Address                                  Investor's Representatives' Address
         and Facsimile Number                                       and Facsimile Number

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

                                                          
Cerberus CH LLC                                               Schulte Roth & Zabel LLP
450 Park Avenue, 28th Floor                                   919 Third Avenue
New York, NY 10022                                            New York, NY  10022
Telephone:  (212) 891-2100                                    Attn:  Stuart Freedman, Esq.
Facsimile:  (212) 891-1540                                    Telephone:  (212) 756-2000
Attention:  Daniel Wolf and Kevin Genda                       Facsimile:  (212) 593-5955
Oak Hill Securities Fund, L.P.                                Paul, Weiss, Rifkind, Wharton & Garrison
65 East 55th Street                                           1285 Avenue of the Americas
New York, New York 10022                                      New York, NY 10019
Telephone: (212) 326-1552                                     Telephone: (212) 373-3000
Facsimile:  (212) 838-8411                                    Facsimile:  (212) 757-3990
Attention:  William H. Bohnsack, Jr.                          Attention:  Eric Goodison

Oak Hill Securities Fund II, L.P.                             Paul, Weiss, Rifkind, Wharton & Garrison
65 East 55th Street                                           1285 Avenue of the Americas
New York, New York 10022                                      New York, NY 10019
Telephone: (212) 326-1552                                     Telephone: (212) 373-3000
Facsimile:  (212) 838-8411                                    Facsimile:  (212) 757-3990
Attention:  William H. Bohnsack, Jr.                          Attention:  Eric Goodison

Lerner Enterprises, L.P.                                      Paul, Weiss, Rifkind, Wharton & Garrison
65 East 65th Street                                           1285 Avenue of the Americas
New York, New York 10022                                      New York, NY 10019
Telephone: (212) 326-1552                                     Telephone: (212) 373-3000
Facsimile:  (212) 838-8411                                    Facsimile:  (212) 757-3990
Attention:  William H. Bohnsack, Jr.                          Attention:  Eric Goodison

P&PK Family Ltd. Partnership                                  Paul, Weiss, Rifkind, Wharton & Garrison
65 East 55th Street                                           1285 Avenue of the Americas
New York, New York 10021                                      New York, NY 10019
Telephone: (212) 326-1552                                     Telephone: (212) 373-3000
Facsimile:  (212) 838-8411                                    Facsimile:  (212) 757-3990
Attention:  William H. Bohnsack, Jr.

Cardinal Investment Partners I, L.P.                          Paul, Weiss, Rifkind, Wharton & Garrison
65 East 55th Street                                           1285 Avenue of the Americas
New York, New York 10021                                      New York, NY 10019
Telephone: (212) 326-1552                                     Telephone: (212) 373-3000
Facsimile:  (212) 838-8411                                    Facsimile:  (212) 757-3990
Attention:  William H. Bohnsack, Jr.                          Attention:  Eric Goodison

Basso Holdings Ltd.                                           Basso Holdings Ltd.
c/o Basso Capital Management, L.P.                            c/o Basso Capital Management, L.P.
1266 East Main Street                                         1266 East Main Street
Stamford, Connecticut 06902                                   Stamford, Connecticut 06902
Telephone: (203) 352-6100                                     Telephone: (203) 352-6100
Facsimile:  (203) 352-6194                                    Facsimile:  (203) 352-6194
Attention: Howard I. Fischer                                  Attention: Marc Seidenberg







                                    EXHIBIT A

                             [SEC NO-ACTION LETTER]














































9590099.8