SCHEDULE 13G

                         FINAL AMENDMENT

                        Calgon Carbon Corp.
                         (Name of Issuer)

              I.R.S. Identification No. 25-0530110

                           COMMON STOCK
                   (Title of Class of Securities)


                            129603106
                          (CUSIP Number)
            SCHEDULE FILED PURSUANT TO RULE 13d-1(b)

1.        Name of Reporting Person
          S.S. or I.R.S. Identification No. of Above Person

                SG Cowen Asset Management Inc.
                I.R.S. Identification No. 13-4091235

2.        Check the Appropriate Box if a Member of a Group

                                     (a)    /  /
                                     (b)    /  /

3.        SEC Use Only

4.        Citizenship or Place of Organization

                Delaware

5.        Sole Voting Power

                0

6.        Shared Voting Power

               0

7.        Sole Dispositive Power

                0

8.        Shared Dispositive Power

                0

9.        Aggregate Amount Beneficially Owned By Each Reporting
          Person

                0

10.       Check Box if the Aggregate Amount in Row (9) Excludes
          Certain Shares *

                N/A

11.       Percent of Class Represented by Amount in Row 9

                0%

12.       Type of Reporting Person *

                 IA

Item 1

           (a)        Calgon Carbon Corp.
           (b)        P.O. Box 717
                      Pittsburg, PA 15230-0717

Item 2

           (a)        SG Cowen Asset Management, Inc.
           (b)        560 Lexington Avenue
                      New York, NY  10022
           (c)        Citizenship: USA

           (d)        Common Stock
           (e)        129603106

Item 3     IF THE STATEMENT IS FILED PURSUANT TO RULE 13d-l(b)
           CHECK WHETHER THE PERSON FILING IS:


           (a)   [   ]    Broker or Dealer registered under
                          section 15 of the Act:



           (e)   [ X ]    Investment advisor registered under
                          section 203 of the Investment Advisers
                          Act of 1940:

                          SG Cowen Asset Management, Inc.


Item 4     OWNERSHIP

           SG Cowen Asset Management, Inc.

           (a)   0
           (b)   0%

           (c)      (i)       0
                   (ii)       0
                  (iii)       0
                   (iv)       0

Item 5     OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS

     If this statement is being filed to report the fact that as
of the date hereof the reporting person has ceased to be the
beneficial owner of more than five percent of the class of
securities, check the following  [ X ].

Item 6     OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF
           ANOTHER PERSON

                   Not Applicable


ITEM 7     IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY
           WHICH ACQUIRED THE SECURITY BEING REPORTED BY THE
           PARENT HOLDING COMPANY

                   Not Applicable

ITEM 8     IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE
           GROUP

                   Not applicable.

ITEM 9     NOTICE OF DISSOLUTION OF GROUP

                   Not applicable.

ITEM 10     CERTIFICATION

        By signing below I certify that, to the best of my
knowledge and belief, the securities referred to above were
acquired in the ordinary course of business and were not acquired
for the purpose of and do not have the effect of changing or
influencing the control of the issuer of such securities and were
not acquired in connection with or as a participant in any
transaction having such purposes of effect.

        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.

January 23, 2002

                                  SG COWEN ASSET MANAGEMENT, INC.

                                  By:/S/ Rodd M. Baxter,
                                     Secretary









                             Rodd M. Baxter
                             SG Cowen Asset Management, Inc.
                             560 Lexington Avenue
                             New York, NY 10022

                             January 23, 2002

VIA EDGAR FILING
Securities and Exchange Commission
Judiciary Plaza
450 Fifth Street, N.W.
Washington, DC 20549

       Re:    Final Amendment to Schedule 13G with respect to the
              Common Stock of Calgon Carbon Corp.

Ladies and Gentlemen:

          On behalf of SG Cowen Asset Management, Inc. I am
transmitting herewith for filing with the Securities and Exchange
Commission (the "Commission") the Final Amendment to Schedule 13G
relating to the Common Stock of Calgon Carbon Corp. This filing is
being effected by direct transmission to the Commission's EDGAR system.

          By copy of this letter, a copy of the enclosed Final Schedule
is being sent by certified mail to Calgon Carbon Corp. at its principal
executive office.

          If you have any questions regarding the foregoing,
please contact the undersigned at (212) 278-6050.

                             Very truly yours,
                             /s/ Rodd M. Baxter
                             Rodd M. Baxter


Enclosures

cc:        Calgon Carbon Corp.