UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C.  20549
                                  SCHEDULE l3D
                    Under the Securities Exchange Act of 1934
                               (Amendment No. 2)*


                               CLEAN HARBORS, INC.
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                                (Name of Issuer)

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

                                    184496107
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                                 (CUSIP Number)
                                                     with a copy to:
     Stephen Feinberg                                Robert G. Minion, Esq.
     450 Park Avenue                                 Lowenstein Sandler PC
     28th Floor                                      65 Livingston Avenue
     New York, New York  10022                       Roseland, New Jersey  07068
     (212) 421-2600                                  (973) 597-2424
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                 (Name, Address and Telephone Number of Person
                Authorized to Receive Notices and Communications)

                                  May 15, 2003
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             (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
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  1)   Names of Reporting Persons.  I.R.S. Identification Nos. of  above persons
       (entities only):

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

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  4)   Source of Funds (See Instructions):  WC
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  5)   Check if  Disclosure of  Legal Proceedings is  Required Pursuant to Items
       2(d) or 2(e):         Not Applicable
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  6)   Citizenship or Place of Organization:    United States
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        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:     *
                                            ------------------------------------
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  11)  Aggregate Amount Beneficially Owned by Each Reporting Person:
                   2,726,638*
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  12)  Check if the Aggregate Amount in Row (11) Excludes Certain Shares  (See
       Instructions):      Not Applicable
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  13)  Percent of Class Represented by Amount in Row (11):     18.2%*
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  14)  Type of Reporting Person (See Instructions):       IA, IN
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*   Cerberus CH LLC,  a Delaware limited  liability company ("Cerberus CH"),  is
the holder of 16,750 shares of Series C Convertible  Preferred  Stock, par value
$0.01  per  share  (the  "Preferred   Shares"),   of  Clean  Harbors,   Inc.,  a
Massachusetts corporation (the "Company").  Subject to certain restrictions, the
Preferred Shares are convertible at any time on or after the date of issuance of
such  shares  into  shares  of common  stock,  par  value  $0.01 per share  (the
"Shares"),  of the Company.  The  conversion  price of the  Preferred  Shares is
$10.50 per share, subject to certain conversion price adjustments.  In addition,
Cerberus Partners,  L.P., a Delaware limited  partnership  ("Cerberus"),  is the
holder of 169,000 Shares, Cerberus International,  Ltd., a corporation organized
under  the laws of the  Bahamas  ("International"),  is the  holder  of  471,200
Shares,  Cerberus Series Two Holdings, LLC, a Delaware limited liability company
("Cerberus  Series  Two"),  is the holder of 220,000  Shares,  Cerberus  America
Series One  Holdings,  LLC,  a Delaware  limited  liability  company  ("Cerberus
America"),  is the holder of 43,800 Shares, and various other private investment
funds (the "Funds")  hold in the  aggregate  227,400  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 May 15,  2003,  for the  purposes  of Reg.  Section
240.13d-3,  Stephen Feinberg is deemed to beneficially own 2,726,638  Shares, or
18.2% of the Shares deemed issued and outstanding as of that date.





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

          Based upon the Company's Proxy Statement  Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 filed on April 16, 2003, as of April 7, 2003
there  were  13,403,650  Shares  issued  and  outstanding.  As of May 15,  2003,
Cerberus CH is the holder of 16,750 Preferred Shares,  Cerberus is the holder of
169,000 Shares,  International is the holder of 471,200 Shares,  Cerberus Series
Two is the holder of 220,000  Shares,  Cerberus  America is the holder of 43,800
Shares and the Funds hold in the aggregate  227,400  Shares.  Subject to certain
restrictions,  the Preferred  Shares are convertible at any time on or after the
date of  issuance  of such  shares  into  Shares.  The  conversion  price of the
Preferred  Shares is $10.50 per  share,  subject  to  certain  conversion  price
adjustments.  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 May 15, 2003,
for the  purposes  of Reg.  Section  240.13d-3,  Stephen  Feinberg  is deemed to
beneficially  own  2,726,638  Shares,  or 18.2% of the Shares  deemed issued and
outstanding as of that date.

          The following table details the transactions in Shares,  or securities
convertible  into,  exercisable for or exchangeable for Shares,  by Cerberus CH,
Cerberus, International, Cerberus Series Two, Cerberus America and/or the Funds,
since the filing of the Schedule 13D Amendment  No. 1 by Mr.  Feinberg as of May
14, 2003 (each of which were effected in an ordinary brokerage transaction):


                                   I. Cerberus
                                   -----------

                                   (Purchases)

              Date                   Quantity                  Price
              ----                   --------                  -----

          May 15, 2003                18,000                  $10.15
          May 15, 2003                 3,000                  $10.31
          May 15, 2003                16,000                  $10.35

                                     (Sales)

                                      NONE





                                II. International
                                -----------------

                                   (Purchases)

              Date                   Quantity                  Price
              ----                   --------                  -----

          May 15, 2003                50,000                  $10.15
          May 15, 2003                 9,400                  $10.31
          May 15, 2003                45,800                  $10.35

                                     (Sales)

                                      NONE


                            III. Cerberus Series Two
                            ------------------------

                                   (Purchases)

              Date                   Quantity                  Price
              ----                   --------                  -----

          May 15, 2003                24,000                  $10.15
          May 15, 2003                 4,000                  $10.31
          May 15, 2003                22,000                  $10.35

                                     (Sales)

                                      NONE


                              IV. Cerberus America
                              --------------------

                                   (Purchases)

              Date                   Quantity                  Price
              ----                   --------                  -----

          May 15, 2003                 4,000                  $10.15
          May 15, 2003                   800                  $10.31
          May 15, 2003                 4,000                  $10.35

                                     (Sales)

                                      NONE





                                  V. The Funds
                                  ------------

                                   (Purchases)

              Date                   Quantity                  Price
              ----                   --------                  -----

          May 15, 2003                24,000                  $10.15
          May 15, 2003                 4,300                  $10.31
          May 15, 2003                22,100                  $10.35

                                     (Sales)

                                      NONE






                                    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.

                                        May 16, 2003


                                        /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).