SUBORDINATION AGREEMENT

     In consideration of the financial accommodations given, to be
given, or continued by CONGRESS FINANCIAL CORPORATION (FLORIDA), a
Florida corporation (hereinafter the "Lender"), to PERMA-FIX
ENVIRONMENTAL SERVICES, INC., a Delaware corporation. (hereinafter
the "Borrower"), and other affiliates of the Borrower, the
undersigned hereby agree, jointly and severally, as follows:
     1.   Each of the undersigned hereby postpones and subordinates
     all of the respective indebtedness and other obligations of the
     Borrower to the undersigned or any one of them of any nature
     whatsoever, whensoever and however arising under either of those
     certain Stock Purchase Agreements (as defined below) and/or under
     each of the Promissory Notes (each such Promissory Note, a "Note")
     of the Borrower in favor of the undersigned true and correct copies
     of which are annexed hereto as Exhibits "A", "B", and "C" (the
     aforesaid obligations and liabilities, including principal and
     interest of the respective Notes are collectively referred to as
     the "Subordinated Debt") to any and all obligations, liabilities
     and indebtedness of every kind, nature and description owing by
     Borrower (and severally as in connection with any affiliate of
     Borrower) to Lender and/or its affiliates, including principal,
     interest, charges, fees, costs and expenses, however evidenced,
     whether as principal, surety, endorser, guarantor or otherwise,
     whether direct or indirect, absolute or contingent, joint or
     several, due or not due, primary or secondary, liquidated or
     unliquidated, secured or unsecured, and however acquired by Lender,
     including, without limitation, the obligations of the Borrower in
     favor of the Lender under that certain Loan and Security Agreement
     dated of even date herewith, by and between the Borrower and the
     Lender (the "Loan Agreement"; all capitalized terms used but not
     defined herein shall have the meanings ascribed thereto in the Loan
     Agreement) and/or the "Term Promissory Note" executed in connection
     therewith (all of the foregoing being referred to collectively, as
     the "Obligations"), and agrees that no payment of (except as
     provided in paragraph 3 below) or on account of the Subordinated
     Debt shall be made, or any security therefor given, except for the
     Michigan Real Estate (as defined below), unless and until all of
     the Obligations have been paid in full and all Financing Agreements
     have been terminated, and further agrees not to demand, receive or
     accept any such payment or security, except for the Michigan Real
     Estate.  Further, as long as the Loan Agreement or any other
     Financing Agreement remains in force and effect, or any of the
     Obligations remains outstanding, none of the undersigned has, nor
     shall either of them hereafter have, any interest in and to or lien
     upon the Collateral (as defined in the Loan Agreement), or any
     other property or interest of the Borrower (or any affiliate
     thereof), except for the Michigan Real Estate.  As used in this
     Agreement, the Michigan Real Estate shall mean that certain real
     property described on Schedule 1 hereto (the "Real Property"), and
     the building and improvements, and real estate fixtures, permits
     and licenses to operate the building thereon (except for all
     tangible and intangible assets used in connection with the business
     of the Borrower and its affiliates, or any of them, including,
     without limitation, all permits and licenses to operate the
     business, and all trade fixtures of Borrower or its affiliates),
     and all vacated alleys and streets abutting said land, together
     with all rents and leases from third party tenants, if any, thereof
     (but not the accounts, chattel paper or other intangible property
     in which a security interest may be perfected under the Uniform
     Commercial Code in effect in the State of Michigan from time to
     time), and tenements, hereditaments, easements and appurtenances




     therein or thereto.  Each of the undersigned hereby disclaims any
     interest in any other Collateral or property of Borrower or any
     affiliate.
     2.   Each of the undersigned represents and warrants that the
     amount of the Notes outstanding on the date hereof is as follows:
          (i)    $1,230,000 Note payable to Ann L. Sullivan
                 Living Trust (Exhibit A);
          (ii)   $1,970,000 Note payable to Ann L. Sullivan
                 Living Trust (Exhibit B); and
          (iii)  $1,500,000 Note payable to Thomas P.
                 Sullivan Living Trust (Exhibit C);
     and that none of the undersigned shall, directly or indirectly, (A)
     increase the amount thereof or of any other Subordinated Debt or
     create additional indebtedness or obligations of Borrower to the
     undersigned at any time hereafter, (B) amend, modify, alter or
     change any terms of the Subordinated Debt, or the Notes or any
     other agreement, document or instrument related thereto at anytime,
     (C) accept any prepayment or other nonmandatory payments on account
     of the Notes, or any amounts arising under the Stock Purchase
     Agreements, including, without limitation, any payment in cash or
     consideration other than stock of Perma-Fix on account of the
     guarantee described in Section 3.2 of the Stock Purchase Agreement
     in respect of Chemical Conservation of Georgia, Inc. and Chemical
     Conservation Corporation, without the prior consent of Lender in
     its discretion.
     3.   So long as no Event of Default  or event which with the
     passage of time, giving of notice, or both, would constitute an
     Event of Default, shall have occurred and be continuing under the
     Loan Agreement, or in Lender's sole determination, if the payment
     to the undersigned of amounts permitted below would result in an
     Event of Default (notice of any of the foregoing is referred to as
     a Default Notice), Borrower may pay and, until Lender gives the
     undersigned written notice of the occurrence of an Event of
     Default, the undersigned may accept from the Borrower, the
     regularly scheduled payments of principal, together with accrued
     interest thereon, on the Notes when, and in the amounts, set forth
     in each respective Note.  Such payments shall exclude, without
     limitation, (a) prepayments (unless Lender has given its prior
     written consent in its sole discretion), (b) non-mandatory
     payments, (c) any payments pursuant to acceleration or pursuant to
     claims of breach or pursuant to claims to acquire any of the Notes
     or otherwise, or (d) any payments by virtue of setoff against any
     obligation of the undersigned, any of them, or their affiliates to
     indemnify or make payments to the Borrower or its affiliates,
     including, without limitation, obligations due the Borrower under
     those certain Stock Purchase Agreements among the undersigned, the
     Borrower, and Chem-Met Services, Inc., and Chemical Conservation of
     Georgia, Inc., and Chemical Conservation Corporation, respectively
     (the "Stock Purchase Agreements").  From and after the giving of
     Default Notice to an undersigned, unless and until the Event of
     Default or other event giving rise to a Default Notice in question
     is cured or waived by Lender (without implying any obligation on
     the part of Lender to permit a cure of or to waive any such Event
     of Default or other event), no further payments of principal or
     interest shall be made to any of the undersigned unless and until
     all Obligations have been paid in full and all Financing Agreements
     have been terminated, and unless Lender, in its sole discretion,
     gives its prior written consent, payments on the Subordinated Debt
     which accrued but were unpaid during any period commencing upon the
     giving of a Default Notice will not be permitted to be paid
     notwithstanding that a cure or waiver occurs (subject as
     aforesaid).  Notwithstanding any rights or remedies available to
     any of the undersigned under any of the respective Notes, the Stock
     Purchase Agreements, applicable law or otherwise, unless and until
     the indefeasible satisfaction in full of all the Obligations, none
     of the undersigned shall, directly or indirectly, seek to collect




     from Borrower, or exercise rights or remedies upon an event of
     default under the Notes, or any other payment in respect of
     Subordinated Debt, including, without limitation, filing an action
     to foreclose upon the Michigan Real Estate, filing a lis pendens
     against the Real Property, or any other judicial or non-judicial
     remedy, except that: (a) upon an event of default under the Notes,
     or any of them, or any other document evidencing the Subordinated
     Debt, the undersigned, as applicable, may declare Borrower to be in
     default under the respective Note(s) and accelerate the respective
     portion thereof, (b) any of the undersigned may defend the validity
     of its claims against the Borrower, and (c) any of the undersigned
     may file a proof of claim with respect to its claims against the
     Borrower, in a manner consistent with the terms of this Agreement.
     4.   Should any payment, distribution or security or proceeds
     thereof be received by any of the undersigned upon or with respect
     to the Subordinated Debt prior to the satisfaction of the
     Obligations, the applicable person or entity shall, except as
     provided in paragraph 3, forthwith deliver the same to the Lender
     in the form received (except for indorsement or assignment by the
     undersigned where required by the Lender), for application in
     accordance with the Loan Agreement, and, until so delivered, the
     same shall be held in trust by the undersigned as the property of
     the Lender.
     5.   In the event of any receivership, insolvency, bankruptcy,
     assignment for the benefit of creditors, readjustment of
     indebtedness, composition, reorganization, whether or not pursuant
     to bankruptcy laws, sale of all or substantially all of the assets,
     dissolution, winding up, liquidation, or any other marshalling of
     the assets and liabilities of the Borrower, regardless of whether
     Lender has given any of the undersigned a Default Notice, any
     payment or distribution of assets of the Borrower of any kind of
     character, whether in cash, securities or other property, which
     would otherwise be payable to or deliverable upon or with respect
     to the Subordinated Debt shall be paid or delivered directly to the
     Lender for application in accordance with the Loan Agreement until
     all Obligations shall have been fully paid and satisfied.  The
     Lender shall have the right to enforce, collect and receive every
     such payment or distribution and give acquittance therefor, and the
     Lender is hereby authorized, as attorney in fact for the
     undersigned, to vote and prove the respective indebtedness of the
     Borrower to the undersigned in any of the above described
     proceedings or in any meeting of creditors of the Borrower.
     6.   None of the undersigned shall assign, transfer,
     hypothecate or dispose of the Subordinated Debt or any claim it has
     or may have against the Borrower, while any of the Obligations
     remains unpaid, without the prior consent of the Lender.  The
     Notes, and any other instrument at any time evidencing the
     Subordinated Debt, or any portion thereof, shall be permanently
     marked on its face with a legend conspicuously indicating that
     payment thereof is subordinate in right of payment to the
     Obligations to the extent provided for herein and subject to the
     terms and conditions of this Agreement, and after being so marked
     certified copies thereof shall be delivered to Lender.  In the
     event any legend or endorsement is omitted, Lender or any of its
     officers or employees, are hereby irrevocably authorized on behalf
     of the undersigned to make the same.  No specific legend, further
     assignment or endorsement or delivery of notes, guarantees or
     instruments shall be necessary to subject any Subordinated Debt to
     the subordination thereof contained in this Agreement.
     7.   THIS AGREEMENT SHALL BE CONTINUING AND IRREVOCABLE SO LONG
     AS THE OBLIGATIONS HAVE NOT BEEN PAID IN FULL.  LENDER, AT ANY TIME
     AND FROM TIME TO TIME, MAY AMEND, MODIFY OR SUPPLEMENT THE FINANCING
     AGREEMENTS, INCREASE, RENEW OR EXTEND THE OBLIGATIONS, OR ANY OF
     THEM, OR OTHERWISE ENTER INTO SUCH AGREEMENTS WITH THE BORROWER AS




     LENDER MAY DEEM PROPER EXTENDING THE TIME OF PAYMENT OR RENEWING OR
     OTHERWISE ALTERING THE TERMS OF THE OBLIGATIONS, OR ANY OF THEM, OR
     AFFECTING THE COLLATERAL OR ANY OTHER SECURITY UNDERLYING ANY OF THE
     OBLIGATIONS, OR ANY OF THEM, OR MAY EXCHANGE, SELL OR SURRENDER OR
     OTHERWISE DEAL WITH ANY SECURITY, OR MAY RELEASE ANY BALANCE OF FUNDS
     OF THE BORROWER, WITH LENDER, WITHOUT NOTICE TO THE UNDERSIGNED AND
     WITHOUT IN ANY WAY IMPAIRING OR AFFECTING THIS AGREEMENT.
     8.   The Lender's delay in or failure to exercise any right or
     remedy shall not be deemed a waiver of any obligation of any of the
     undersigned or right of the Lender.  This Agreement may be
     modified, and any of the Lender's rights hereunder waived, only by
     agreement in writing signed by the Lender.
     9.   This Agreement shall inure to the benefit of the Lender,
     its successors and assigns and bind the respective heirs, legatees,
     personal representatives, successors and assigns of the
     undersigned.
     10.  Notice of acceptance by the Lender of this Agreement is
     hereby waived by each of the undersigned, and this Agreement and
     all of the terms and provisions hereof shall immediately be binding
     upon the undersigned and the undersigned shall deliver such
     additional documents and take such action as shall be reasonably
     necessary to effectuate the purposes of this Agreement.
     11.  This Agreement sets forth the entire understanding and
     agreement of the parties with respect to the subject matter hereof.
     Neither this Agreement nor any term hereof may be modified,
     altered, waived, discharged or terminated orally, but only by an
     instrument in writing executed by the party to be charged.
     12.  Any notice or other communication in connection with this
     Agreement shall be in writing (or in the form of a facsimile or
     telecopy) and shall be deemed to have been duly given when
     addressed as provided below and if either (a) personally delivered,
     or (b) mailed by registered or certified mail, return receipt
     requested, postage prepaid, or (c) sent by reputable overnight
     courier service with receipt confirmed; or (d) sent by facsimile
     transmission with confirmed receipt:
          If to the Borrower:
          Perma-Fix Environmental Services, Inc.
          1940 N.W. 67th Place, Suite A
          Gainesville, Florida  32653
          Attention:  Richard T. Kelecy, Chief Financial Officer
          Facsimile No.:  (352) 373-0040

          If to the undersigned:
          Ann L. Sullivan Living Trust
          1021 Harvard Road
          Grosse Pointe Park, Michigan  48230
          Attention:  Mr. Thomas P. Sullivan

          Thomas P. Sullivan Living Trust
          1021 Harvard Road
          Grosse Pointe Park, Michigan  48230
          Attention:  Mr. Thomas P. Sullivan



          with a copy to:

          O'Rourke & Myers
          241 Lewiston
          Grosse Pointe Farms, Michigan  48236
          Attention:  Peter E. O'Rourke, Esq.
          Facsimile No.:  (313) 885-1921




          If to Lender:
          Congress Financial Corporation (Florida)
          777 Brickell Avenue - Suite 808
          Miami, Florida  33131
          Attention:  Gary Dixon, Vice President
          Facsimile No. (305) 371-9456
          with a copy to:

          Stroock & Stroock & Lavan LLP
          200 South Biscayne Boulevard, 33rd Floor
          Miami, Florida 33131
          Attention:  Robert M. Siegel, Esq.
          Facsimile No. (305) 789-9302
     and in any case at such other address as the addressee shall have
     specified by written notice as aforesaid.
     13.  EACH OF THE UNDERSIGNED HEREBY KNOWINGLY, VOLUNTARILY AND
     INTENTIONALLY WAIVES ANY RIGHT HE OR SHE MAY HAVE TO A TRIAL BY
     JURY IN RESPECT OF ANY LITIGATION ARISING OUT OF, UNDER OR IN
     CONNECTION WITH THIS AGREEMENT OR ANY DOCUMENTS AT ANY TIME MADE IN
     CONNECTION HEREWITH, OR THE TRANSACTIONS CONTEMPLATED HEREIN OR
     THEREIN.  FURTHER, THE UNDERSIGNED HEREBY CERTIFIES THAT NO
     REPRESENTATIVE OR AGENT OF LENDER NOR LENDER'S COUNSEL HAS
     REPRESENTED, EXPRESSLY OR OTHERWISE, THAT LENDER WOULD NOT, IN THE
     EVENT OF SUCH LITIGATION, SEEK TO ENFORCE THIS WAIVER OF RIGHT TO
     JURY TRIAL PROVISION.  FINALLY, THE UNDERSIGNED ACKNOWLEDGE THAT
     THE LENDER HAS BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, INTER
     ALIA, THE PROVISIONS OF THIS PARAGRAPH.
     14.  This Agreement shall be governed by and construed in
     accordance with the laws of the State of Florida, without giving
     effect to principles of conflict of laws.  The parties hereto
     expressly consent to the jurisdiction of the state and federal
     courts located in the State of Florida and agree that any
     litigation arising out of or in connection with this Agreement
     shall be brought in the Circuit Court of Miami-Dade County, Florida
     or Federal District Court of the Southern District of Florida,
     including in respect of the validity, enforceability or
     interpretation hereof.
     15.  This Agreement may be executed in counterparts, each of
     which shall constitute an original but all of which, when taken
     together, shall constitute but one agreement.
     16.  Neither Borrower nor any third party shall have any
     rights or be entitled to any benefits under this Agreement.
     17.  All references to the undersigned in this Agreement (and
     the obligations of the undersigned in favor of the Lender) are
     deemed to be joint and several.
     IN WITNESS WHEREOF, the undersigned has executed this
Agreement as of this 26th day of May, 1999.

                                     ANN L. SULLIVAN LIVING TRUST



                                     By: /s/ Ann L. Sullivan
                                        ____________________________
                                        Name: Ann L. Sullivan
                                            ________________________
                                        Title: Trustee
                                              _______________________



                                      THOMAS P. SULLIVAN LIVING TRUST


                                       By:  /s/ Thomas P. Sullivan
                                          ___________________________
                                          Name:  Thomas P. Sullivan
                                               ______________________
                                          Title:  Trustee
                                                _____________________

                                        /s/ Thomas P. Sullivan
                                        _____________________________
                                        s/
                                        Thomas P. Sullivan

                                        /s/ Ann L. Sullivan
                                        ______________________________
                                        s/
                                        Ann L. Sullivan

     The undersigned Borrower hereby consents to the foregoing
agreement and agrees to be bound by the terms and conditions
thereof.
                                     PERMA-FIX ENVIRONMENTAL SERVICES,
                                     INC.



                                     By: /s/ Richard T. Kelecy
                                        _______________________________
                                        Name: Richard T. Kelecy
                                             __________________________

                                        Title:  Vice President
                                             __________________________


STATE OF OKLAHOMA
COUNTY OF OKLAHOMA
         The foregoing instrument was acknowledged before me this 26th
day of May, 1999 by Ann L. Sullivan, as Trustee of the Ann L.
Sullivan Living Trust.  She is personally known to me or has
produced a ________________________ as identification.

                                 /s/ Peggy Lee Hull
                                  ______________________________
                                  Print Name: Peggy Lee Hull
                                             ___________________
                                  Title:  Notary Public
Commission expires: 1/29/2002           ________________________
                                  Commission No. _______________
                                                 (if any)


STATE OF OKLAHOMA
COUNTY OF OKLAHOMA
         The foregoing instrument was acknowledged before me this 26th
day of May, 1999 by Thomas P. Sullivan, as Trustee of the Thomas P.
Sullivan Living Trust.  He is personally known to me or has
produced a ________________________ as identification.

                                   /s/ Peggy Lee Hull
                                  ______________________________
                                  Print Name:  Peggy Lee Hull
                                             ___________________
                                  Title: Notary Public
Commission expires: 1/29/2002           ________________________
                                  Commission No. _______________
                                                 (if any)

STATE OF OKLAHOMA
COUNTY OF OKLAHOMA
         The foregoing instrument was acknowledged before me this 26th
day of May, 1999 by Thomas P. Sullivan, individually.  He is
personally known to me or has produced a ________________________
as identification.
                                    /s/ Peggy Lee Hull
                                  ______________________________
                                  Print Name: Peggy Lee Hull
                                             ___________________
                                  Title:  Notary Public
Commission expires: 1/29/2002           ________________________
                                  Commission No. _______________
                                                 (if any)
STATE OF OKLAHOMA
COUNTY OF OKLAHOMA
         The foregoing instrument was acknowledged before me this 26th
day of May, 1999 by Ann L. Sullivan, individually.  She is
personally known to me or has produced a ________________________
as identification.
                                  /s/ Peggy Lee Hull
                                  ______________________________
                                  Print Name: Peggy Lee Hull
                                             ___________________
                                  Title:  Notary Public
Commission expires: 1/29/2002           ________________________
                                  Commission No. _______________
                                                 (if any)
30061531v4