AMENDMENT AND JOINDER TO LOAN AND SECURITY AGREEMENT

         This Amendment and Joinder to Loan and Security Agreement (the
"Amendment") made and entered into as of this 27th day of May, 1999,
by and between Perma-Fix Environmental Services, Inc. ("Perma-
Fix"), a Florida corporation, and its direct and indirect
subsidiaries named on the signature pages hereof, jointly and
severally (the "Borrowers"; all references to "Borrowers" shall
mean each Borrower and all of the Borrowers, individually and
collectively, jointly and severally), and CONGRESS FINANCIAL
CORPORATION (FLORIDA), a Florida corporation ("Lender").
                          WITNESSETH:
         WHEREAS, Lender and the Borrowers (other than the Additional
Borrowers referred to below) entered into a Loan and Security
Agreement dated as of January 15, 1998 (the "Original Loan
Agreement"; the Original Loan Agreement, as the same may
hereafter be amended, including by this Amendment, is hereinafter
referred to as the "Loan Agreement"; all capitalized terms used
but not defined in this Amendment shall have the respective
meanings set forth in the Original Loan Agreement);
         WHEREAS, Perma-Fix is acquiring all of the issued and
outstanding shares of stock of Chem-Met Services, Inc. ("Chem-
Met"), a Michigan corporation, Chemical Conservation of Georgia,
Inc. ("Chem Con-Georgia"), a Georgia corporation, and Chemical
Conservation Corporation ("Chem Con"), a Florida corporation
(collectively, the "Additional Borrowers");
         WHEREAS, in connection with the foregoing transactions, the
Borrowers have requested that Lender consent to such transactions
and agree to extend credit to the Additional Borrowers under the
Loan Agreement; and
         WHEREAS, in connection with the foregoing, the Lender has
required that certain terms and conditions of the Original Loan
Agreement be amended, and the joinder to the Loan Agreement of
the Additional Borrowers, as more fully set forth hereinbelow.
         NOW, THEREFORE, in consideration of the premises, and for
other good and valuable consideration, the receipt and
sufficiency whereof is hereby acknowledged, the parties hereto
agree that the foregoing recitals are true and correct and
incorporated herein, and as follows:
I.   Amendments to Loan Agreement.  As used in this Amendment, all
references to sections and headings contained in Section I of this
Amendment are to those contained in the Original Loan Agreement.
The Original Loan Agreement is hereby amended, modified and
supplemented as follows:
     1. Section 1.  "Definitions" is hereby amended by:
        (a)   adding the following definitions:
          "Additional Borrowers", Chem-Met, Chem Con, and Chem
          Con-Georgia shall have the meanings set forth in the
          recitals to the Amendment.
          "Amendment" shall mean the Amendment and Joinder to
          Loan and Security Agreement dated as of May 27, 1999, by
          and between Lender and Borrowers.
          "Certification Invoice" shall mean as to any Account
          arising under a contract with the United States or any
          subdivision, the invoice therefor containing the
          certification by the applicable Borrower to the
          applicable U.S. governmental unit that, inter alia, the
          services giving rise to such Account have been performed
          in accordance with the related contract.




         "Claims Act" shall have the meaning set forth in
         Subsection 1.6(k).
         "Purchased Stock" shall mean all of the issued and
         outstanding shares of the Additional Borrowers.
         "Seller" shall mean, collectively, the ALS Trust,
         the TPS Trust, TPS and ALS.
         "Subordination Agreement" shall mean that certain
         Subordination Agreement dated of even date of the
         Amendment, by and among the Thomas P. Sullivan Living
         Trust ("TPS Trust"), the Ann L. Sullivan Living Trust
         ("ALS Trust") and Perma-Fix Environmental Services, Inc.
         "Subordinated Indebtedness" shall mean the
         Subordinated Debt (as defined in the Subordination
         Agreement).
         "Sullivan Mortgage" shall mean that certain Mortgage
         dated on or about the date of the Amendment, made by
         Chem-Met Services, Inc. in favor of the TPS Trust and the
         ALS Trust.
         "Transaction Documents" shall mean, collectively,
         those certain Stock Purchase Agreements (the "Stock
         Purchase Agreements"), dated May 27, 1999, the first by
         and among Perma-Fix, Chem-Met, the TPS Trust, the ALS
         Trust, Thomas P. Sullivan ("TPS") and Ann L. Sullivan
         ("ALS"), and the second by and among Perma-Fix, Chem Con,
         Chem Con-Georgia, the TPS Trust, the ALS Trust, TPS and
         ALS, all other agreements of transfer as are referred to
         therein and all side letters with respect thereto and all
         documents, instruments, and agreements executed or
         delivered in connection therewith, as all of the
         foregoing now exist or may hereafter be amended,
         modified, supplemented, extended, renewed, restated, or
         replaced; and
       (b)   by amending and restating the following definitions
       in their entireties:
                            *  *  *
              1.11  "Existing Unencumbered Real Property"
              shall mean all Real Property of any Borrower not
              subject of the Mortgages, including the Real
              Property described on Composite Exhibit "C" to this
              Agreement owned by Perma-Fix of Memphis, Inc., and
              Perma-Fix of Ft. Lauderdale, Inc. and Perma-Fix
              Treatment Services, Inc. located in Tulsa,
              Oklahoma, respectively, as supplemented by Exhibit
              "C" to this Amendment with respect to Real Property
              respectively owned by Chem-Met Services, Inc.,
              Chemical Conservation Corporation, and Chemical
              Conservation of Georgia, Inc., as indicated on
              Exhibit "C", but excluding the Real Property
              located at Latham Street in Memphis, Tennessee
              owned by Perma-Fix of Memphis, Inc. (the "Latham
              Street Property"), the real property located in
              Wayne County, Michigan owned by Chem-Met Services,
              Inc., but solely to the extent such property is
              encumbered by the Sullivan Mortgage, and the real
              property located in Orange County, Florida owned by
              Chemical Conservation Corporation, but solely, to


              the extent such properties are encumbered by the
              mortgage by Sun Trust securing the Sun Trust Debt
              and the Carrier Debt, as replaced by Sun Trust.
                     *  *  *
              1.20  "Maximum Credit " shall mean, on any
              date of determination, the amount of $11,000,000.




        (c)   by amending and restating part (k) of Section 1.6,
        Eligible Accounts, as follows:
                            *  *  *
              (k)   The account debtors with respect to such
              Accounts are not any foreign government, the United
              States of America, any State, political
              subdivision, department, agency or instrumentality
              thereof, unless, if the account debtor is the
              United States of America, any State, political
              subdivision, department, agency or instrumentality
              thereof, (i) the Federal Assignment of Claims Act
              of 1940, as amended (the "Claims Act") or any
              similar State or local law, if applicable, has been
              complied with in a manner satisfactory to Lender;
              (ii) on any date of determination by Lender, such
              Accounts do not exceed twenty percent (20%) of all
              otherwise Eligible Accounts on such date of
              determination; and (iii) as to each such Account,
              the Certification Invoice has been submitted by the
              applicable Borrower to the applicable governmental
              unit.
                     *  *  *

      2. Section 2, Credit Facilities is hereby amended as follows:
        (a)   Subsection (c) of Section 2.1 Revolving Loans, is
hereby amended and restated in its entirety as follows:
              (c)   Except in Lender's discretion, the
              aggregate amount of the Loans outstanding at any
              time shall not exceed the Maximum Credit.  In the
              event that the outstanding amount of any component
              of the Loans, or the aggregate amount of the
              outstanding Loans exceed the amounts available
              under the lending formulas or the Maximum Credit,
              such event shall not limit, waive or otherwise
              affect any rights of Lender in that circumstance or
              on any future occasions and Borrowers shall, upon
              demand by Lender, which may be made at any time or
              from time to time, immediately repay to Lender the
              entire amount of any such excess(es) for which
              payment is demanded.
                     *  *  *
        (b)   Section 2.3 Term Loan is hereby amended and restated
        in its entirety:
         Section 2.3 Term Loan.  On the date of the
         Amendment, Lender is making a Term Loan to Borrowers in
         the original principal amount of $3,750,000, which
         constitutes a renewal of the Term Loan originally
         extended on or about January 15, 1998, of which the
         principal amount of $1,666,667 is outstanding as of the
         date of the Amendment, and an increase thereto in the
         principal amount of $,2,083,333.  The Term Loan is: (a)
         evidenced by a Term Promissory Note in the original
         principal amount of $3,750,000 (the "Renewal Term Note")
         duly executed and delivered by Borrowers to Lender
         concurrently with the Amendment, which Renewal Term Note
         renews and increases, but does not satisfy, the
         Obligations evidenced by the Term Promissory Note in the
         original principal amount of $2,500,000 outstanding as of
         the date of this Amendment; (b) to be repaid, together
         with interest and other amounts, in accordance with this
         Agreement, the Renewal Term Note, and the other Financing
         Agreements; and (c) secured by all of the Collateral.




     3. Subsection 3.1(a) of Section 3.1 Interest is amended and
     restated as follows:
         Borrowers shall pay to Lender interest on the
         outstanding principal amount of the Obligations at the
         rate of one and three-quarters percent (1?%) per annum in
         excess of the Prime Rate (subject to reduction as
         provided hereinbelow), except that, at Lender's option,
         without notice, Borrowers shall pay to Lender interest at
         the rate of three and three-quarters percent (3?%) per
         annum in excess of the Prime Rate:  (i) on the
         Obligations for (A)  the period from and after the date
         of termination hereof until such time as Lender has
         received full and final payment of all such Obligations
         (notwithstanding entry of any judgment against
         Borrowers), and (B) the period from and after the date of
         the occurrence of an Event of Default for so long as such
         Event of Default is continuing as determined by Lender
         and (ii) on the Revolving Loans at any time outstanding
         in excess of the amounts available to Borrowers under
         Section 2 (whether or not such excess(es), arise or are
         made with or without Lender's knowledge or consent and
         whether made before or after an Event of Default);
         provided, however, that if no Event of Default shall have
         occurred, if "net income/loss applicable to common stock"
         for Borrowers is at least a positive $1,500,000, for
         fiscal year 1999 or, if less in such year, for fiscal
         year 2000, in either case as reflected in Borrowers'
         applicable annual audited financial statements furnished
         to Lender pursuant to Section 9.6 of this Agreement, from
         and after the date of receipt by Lender of such financial
         statements, this Section 3.1(a) shall be deemed amended
         in part by substituting above the phrase . . . "one and
         one-half percent (1 1/2%) in respect of the principal of
         Revolving Loans and one and three-quarters percent (1?%)
         in respect of the Term Loan" . . . for the phrase . . .
         "one and three-quarters percent (1?%)" . . . . .
     4. Section 3.4 Servicing Fee is amended by substituting
     therein the amount of $2,000 wherever the amount of $1,500 appears,
     which increased amount shall be effective commencing the next
     calendar month after the month containing the date of this
     Amendment.
     5. Section 3.5 Unused Line Fee is amended by (a) substituting
     the term "Maximum Credit" wherever the amount of $4,500,000 appears
     and (b) deleting the word "Revolving" from Section 3.5.
     6. (a)   The preamble to Section 5, Grant of Security
     Interest, is hereby amended and restated as follows:
         To secure payment and performance of all
         Obligations, each Borrower hereby grants and regrants, as
         appropriate, to Lender a continuing security interest in,
         a lien upon, and a right of set off against, and hereby
         assigns to Lender as security, the following property and
         interests in property of such Borrower, whether now owned
         or hereafter acquired or existing, and wherever located
         (collectively, the "Collateral"):
                            *  *  *


        (b)   The Borrowers agree that Section 5.2 is supplemented
        by the following:
         ..., including, without limitation, all of Perma-
         Fix's right, title and interest in, to, and under, the
         Transaction Documents, including, without limitation, all
         of the benefits of any representations and warranties




         provided by the Seller, and any and all of Perma-Fix's
         rights to indemnification from the Seller or any other
         person contained therein.  Borrowers agree that no
         provision contained in this Agreement shall impose on
         Lender any of the obligations or liabilities of Perma-Fix
         under the Transaction Documents.  In addition, Borrowers
         hereby indemnify Lender and hold it harmless from any and
         all claims, actions, suits, losses, damages, costs,
         expenses, fees, obligations and liabilities which may be
         incurred by or imposed upon Lender by Seller or any other
         third party by virtue of Lender's lien on Perma-Fix's
         right, title and interest in, to, and under the
         Transaction Documents.  The foregoing shall survive
         payment of the Obligations in full and termination of the
         Agreement.  Borrowers further acknowledge and agree that
         following the occurrence of an Event of Default, Lender
         shall be entitled, at its option, to enforce any and all
         Perma-Fix's rights and remedies under the Transaction
         Documents and/or under applicable law.
     7. Section 8 Representations and Warranties, is hereby
     supplemented by the following:
                            *  *  *
        8.13  Acquisition of Purchased Stock.

              (a)   The Transaction Documents and the
        transactions contemplated thereunder have been duly
        executed, delivered and performed in accordance with
        their terms by the respective parties thereto in all
        material respects, including the fulfillment (not merely
        the waiver, except as may be disclosed to Lender and
        consented to in writing by Lender) of all material
        conditions precedent set forth therein and giving effect
        to the terms of the Transaction Documents and the
        assignments to be executed and delivered by Seller
        thereunder, Perma-Fix acquired and has good and
        marketable title to the Purchased Stock, free and clear
        of all claims, liens, pledges and encumbrances of any
        kind, except as disclosed in writing to Lender.

              (b)   All actions and proceedings required by
        the Transaction Documents, applicable law or regulation
        (including, but not limited to, compliance with the
        Hart-Scott-Rodino Anti-Trust Improvements Act of 1976, as
        amended) have been taken and the transactions required
        thereunder have been duly and validly taken and
        consummated.

             (c)   No court of competent jurisdiction has
        issued any injunction, restraining order or other order
        which prohibits consummation of the transactions
        described in the Transaction Documents and no
        governmental or other action or proceeding has been
        threatened or commenced, seeking any injunction,
        restraining order or other order which seeks to void or
        otherwise modify the transactions described in the
        Transaction Documents.



             (d)   Borrower has delivered, or caused to be
        delivered, to Lender true, correct and complete copies of
        the Transaction Documents.




              8.14  Capitalization.

              All of the issued and outstanding shares of
         capital stock of each of the Additional Borrowers are
         directly and beneficially owned and held by Perma-Fix and
         all of such shares have been duly authorized and are
         fully paid and non-assessable, free and clear of all
         claims, liens, pledges and encumbrances of any kind,
         except as disclosed in writing to Lender.

     8.  Section 9.9  Indebtedness is hereby supplemented by the
following:
                            *  *  *
         ; and (e) the Subordinated Indebtedness which
         indebtedness is subject and subordinate in right of
         payment to the right of Lender to receive the prior final
         payment and satisfaction in full of all of the
         Obligations; provided, that: (i) the principal amount of
         indebtedness evidenced by the Notes (as defined in the
         Subordination Agreement) shall not exceed $4,700,000,
         less the aggregate amount of all repayments, repurchases
         or redemptions, whether optional or mandatory in respect
         thereof, plus interest thereon at the rate provided for
         in such agreement or instrument as in effect on the date
         hereof, nor shall any other Subordinated Indebtedness be
         increased over the amounts contemplated in the
         Transaction Documents in effect concurrently with this
         Amendment (ii) Borrower shall not, directly or
         indirectly, make any payments in respect of the
         Subordinated Indebtedness (other than the distribution of
         common stock permitted under Section II(v) of the
         Amendment), including, but not limited to, any
         prepayments or other non-mandatory payments, except that
         until an Event of Default, or event which with notice or
         passage of time or both would constitute an Event of
         Default, shall exist or have occurred and be continuing,
         Borrower may make regularly scheduled payments of
         principal and interest in accordance with the terms of
         such agreement or instrument as in effect on the date
         hereof, (iii) Borrower shall not, directly or indirectly,
         (A) amend, modify, alter or change any terms of the
         Subordinated Indebtedness, including, without limitation,
         the Sullivan Mortgage, or (B) redeem, retire, defease,
         purchase or otherwise acquire such indebtedness, or set
         aside or otherwise deposit or invest any sums for such
         purpose except as permitted under the Subordination
         Agreement and this Agreement, and (iv) Borrower shall
         furnish to Lender all notices, demands or other materials
         concerning such indebtedness either received by Borrower
         or on its behalf, promptly after receipt thereof, or sent
         by Borrower or on its behalf, concurrently with the
         sending thereof, as the case may be.
                            *  *  *
     9.  Section 9.11 Dividends and Redemptions is hereby amended
and restated in its entirety as follows:
         Section 9.11 Dividends and Redemptions.  No Borrower
         shall, directly or indirectly, declare or pay any
         dividends (except for dividends declared and paid from
         time to time in respect of preferred stock issued and
         outstanding on the date of this Amendment as set forth on
         Schedule 9.11 hereto and dividends to Perma-Fix from its
         subsidiaries or to or from subsidiaries of any other
         Borrower for the purpose of ultimately dividending a like




         amount to Perma-Fix), on account of any shares of class
         of capital stock of any Borrower now or hereafter
         outstanding, or set aside or otherwise deposit or invest
         any sums for such purpose, or redeem, retire, defease,
         purchase or otherwise acquire any shares of any class of
         capital stock (or set aside or otherwise deposit or
         invest any sums for such purpose) (other than the
         redemption of various series of preferred stock of Perma-
         Fix existing as of the date of this Amendment in an
         aggregate amount not to exceed $750,000) for any
         consideration other than common stock or apply or set
         apart any sum, or make any other distribution (by
         reduction of capital or otherwise) in respect of any such
         shares or agree to do any of the foregoing.

     10. (a) Section 10.1 Events of Default is amended as
     follows:
     (a)   In Subsection (a), by substituting the phrase "five
     (5)" wherever the phrase "ten (10)" appears; and
     (b)   by adding Subsection (n):
           (n)  any party to the Subordination Agreement
           shall breach any term thereof, or revoke or
           contest or attempt to revoke or contest any terms
           or conditions thereof.

     11.   Section 12.1 Term is amended by:
     (a)   deleting the word ". . . hereof . . ." in the second
     line and substituting the words ". . . of the Amendment . . ."
     therefor in Subsection 12.1(a); and
     (b)   by deleting Parts (i), (ii) and (iii)  of Subsection
     12.1(c) and substituting the following therefor:
                            *  *  *
         Amount         Period
         ______         ______
  (i)    1.5% of Maximum Credit    From the date of the Amendment to and
         including January 14, 2000; and
  (ii)   1.0% of Maximum Credit    From January 15, 2000 to and including
         January 14, 2001.
                            *  *  *
     12.   Exhibit "A", Information Certificate, to the Original
Loan Agreement is hereby replaced by Exhibit "A" to this Amendment.
 II.  Consent.  Subject to the terms and conditions of this
 Amendment and all of the Financing Agreements, Borrower has
 requested that Lender consent, and Lender hereby consents, to the
 acquisitions of the Shares (as respectively defined in the Stock
 Purchase Agreements) and notwithstanding the provisions of Section
 9.7 of the Original Loan Agreement, that (i) shares of Common Stock
 of Perma-Fix shall be issued to the ALS Trust pursuant to the terms
 of the Stock Purchase Agreements, (ii) Chem-Met, Chem Con and Chem
 Con-Georgia will hereafter be subsidiaries of Perma-Fix; (iii) the
 payments to resolve the litigations referred to in Section IV(K) of
 this Amendment, (iv) the repayment of Charter Bank and the Michigan
 Strategic Fund of all amounts due such entities set forth on payoff
 letters heretofore provided to Lender, (v) the continuation of the
 Sun Trust Debt and an increase thereto to repay all amounts due
 under the Carrier Debt (as such terms are defined in and as
 required by the Stock Purchase Agreements) (as which Borrowers
 agree that they shall not increase the amount thereof from that
 outstanding on the date of this Amendment, and shall upon execution
 thereof, deliver to Lender true and complete copies of the Sun
 Trust loan documents, and (vi) the issuance of the Guarantees under
 the Stock Purchase Agreements (but not to the payment of cash or
 any other consideration thereunder other than the issuance of




 shares of common stock of Perma-Fix so long as a change of control
 as provided in 10.(j) does not occur thereby).  The foregoing
 consents shall be effective in this specific instance only.
 Accordingly, except for such transactions set forth in the
 Transaction Documents, Lender shall have no obligation to (i)
 consent to any departure from the terms and conditions of the Loan
 Agreement or any other Financing Agreements whether heretofore or
 hereafter occurring, or (ii) waive any Event of Default occurring
 under the Loan Agreement or any other Financing Agreement now
 existing or hereafter occurring, including, without limitation,
 pursuant to 10.1(j) of the Loan Agreement, in either case, whether
 arising out of similar or dissimilar transactions to the
 transactions contemplated in the Transaction Documents, or
 otherwise.
 III. Joinder to Loan Agreement and Other Financing Agreements.
      1. (a)   Each Additional Borrower agrees that from and after
      the date of this Amendment, it shall be joined in the Loan
      Agreement as a "borrower" with joint and several liability with
      each of the other Borrowers and, accordingly, all references to the
      term "Borrowers" in the Loan Agreement shall have the meaning set
      forth in this Amendment.
         (b)   Each Additional Borrower acknowledges that it has
         received and reviewed the Original Loan Agreement, a copy of which
         is annexed to this Amendment as Exhibit "1", and all other
         Financing Agreements, and agrees to be bound by all of the terms
         and conditions of the Loan Agreement and all of the other Financing
         Agreements applicable to the "Borrowers."  To this effect, each of
         the Additional Borrowers acknowledges and agrees that pursuant to
         Section 5 of the Agreement, as of the date of this Amendment, it is
         granting to the Lender a first priority security interest in and to
         the Collateral described in the Loan Agreement, whether now owned
         by it or in which it has an interest, or hereafter acquired,
         created, or arising, subject only to those liens and security
         interests expressly permitted by the Loan Agreement.
         (c)   Each Additional Borrower acknowledges and agrees
         that by execution of this Amendment, as of the date of this
         Amendment and hereafter, it is and shall be making all of the
         representations and warranties of a Borrower, whether in the Loan
         Agreement, the other Financing Agreements, or otherwise.  To this
         effect, annexed to this Amendment are Exhibits "A", "B", and "C",
         and Schedules 8.4, 8.8, 8.9, 8.9, and 9.10, which Exhibits and
         Schedules are hereby made a part of the sections of the Loan
         Agreement referencing such Exhibits and Schedules. The Exhibits and
         Schedules supplement but do not replace the Exhibits and Schedules
         heretofore delivered to Lender in connection with the Original Loan
         Agreement.
 IV.  Conditions Precedent.
      1. (a)   Borrower acknowledges and agrees that as a condition
      precedent to the effectiveness of the consent of Lender pursuant to
      Part II of this Amendment or the increase in the amount of the
      Loans contemplated herein:
         (b)   all requisite corporate action and proceedings in
      connection with this Loan Agreement and the other Financing
      Agreements shall be satisfactory in form and substance to Lender,
      and Lender shall have received all information and copies of all
      documents, including, without limitation, records of requisite
      corporate action and proceedings which Lender may have requested in
      connection therewith, such documents where requested by Lender or
      its counsel to be certified by appropriate corporate officers or
      governmental authorities;
         (c)   no material adverse change shall have occurred in
      the assets, business or prospects of the Additional Borrowers or
      the other Borrowers since the date of Lender's latest field
      examination and no change or event shall have occurred which would




      impair the ability of Borrowers or any Obligor to perform its
      obligations hereunder or under any of the other Financing
      Agreements to which it is a party or of Lender to enforce the
      Obligations or realize upon the Collateral;
      (d)   Lender shall have received, in form and substance
      satisfactory to Lender, all consents, waivers, acknowledgments and
      other agreements from third persons which Lender may deem necessary
      or desirable in order to permit, protect and perfect its security
      interests in and liens upon the Collateral or to effectuate the
      provisions or purposes of this Agreement and the other Financing
      Agreements, including, without limitation, acknowledgments by
      lessors, mortgagees and warehousemen of Lender's security interests
      in the Collateral, waivers by such persons of any security
      interests, liens or other claims by such persons to the Collateral
      and agreements permitting Lender access to, and the right to remain
      on, the premises to exercise its rights and remedies and otherwise
      deal with the Collateral;
      (e)   Lender shall have received, in form and substance
      satisfactory to Lender, such opinions of counsel to Borrowers and
      the Seller with respect to the Financing Agreements, the
      Transaction Documents, and such other matters as Lender may
      request;
      (f)   Lender shall have been named loss payee upon
      endorsements satisfactory to the Lender under the policies of
      insurance required to be maintained by each Borrower pursuant to
      the Loan Agreement and all such policies of insurance shall be
      reviewed by and be satisfactory to Lender;
      (g)   such other Financing Agreements and all instruments
      and documents hereunder and thereunder as Lender may require shall
      have been duly executed and delivered to Lender, in form and
      substance satisfactory to Lender;
      (h)   Lender shall have received, in form and substance
      satisfactory to Lender, evidence that the Transaction Documents
      have been duly executed and delivered by and to the appropriate
      parties thereto and the transactions contemplated under the terms
      of the Transaction Documents have been consummated prior to or
      contemporaneously with the execution of this Amendment;
      (i)   Lender shall have received, in form and substance
      satisfactory to Lender, a pro-forma balance sheet of Borrower
      reflecting the initial transactions contemplated hereunder,
      including, without limitation, (i) the consummation of the
      acquisition of the Purchased Stock by Perma-Fix from Seller and the
      other transactions contemplated by the Transaction Documents and
      (ii) the Loans provided by Lender to Borrower on the date of this
      Amendment and the use of the proceeds of the initial Loans as
      provided herein, accompanied by a certificate, dated of even date
      herewith, of the chief financial officer of Borrower, stating that
      such pro-forma balance sheet represents the reasonable, good faith
      opinion of such officer as to the subject matter thereof as of the
      date of such certificate;
      (j)   Lender shall have received, in form and substance
      satisfactory to Lender, the agreement of Seller consenting to the
      collateral assignment by Borrower or any Obligor to Lender of all
      of Borrower's and such Obligor's rights and remedies and claims for
      damages and other relief under the Transaction Documents and
      granting Lender such other rights as Lender may require, duly
      authorized, executed and delivered by Seller;


      (k)   Evidence deemed satisfactory to Lender of the
      concurrent final settlement of the litigation in respect of the
      "Four County Landfill Site," pursuant to the terms of the Stock




      Purchase Agreements and the payoff and settlement of Chemfix
      Technologies, Inc. litigation.
   2. This Amendment constitutes a part of, and shall be
construed in connection with, the Original Loan Agreement, and all
terms, covenants, conditions, representations and warranties shall
remain in full force in effect and are incorporated herein by
reference as if fully set forth herein.  In the event of any
inconsistencies between the provisions of this Amendment and
elsewhere in the Loan Agreement, the provisions of this Amendment
shall in all respects govern and control.
V. Other Matters.
   1. Borrowers are paying Lender a closing fee of $40,000 on or
   before the date of this Amendment, which fee shall be deemed to be
   fully earned by Lender upon execution of this Amendment by Lender
   and Borrowers.
   2. As to contracts with the United States or any subdivision
   which are in existence as of the date of this Amendment or which
   may hereafter arise, so long as copies of such contracts have
   heretofore been delivered to Lender, Lender agrees that Accounts
   arising thereunder shall be deemed to be Eligible Accounts if such
   Accounts would otherwise be deemed to be Eligible Accounts but for
   the fact that the applicable Claims Act provisions have not been
   complied with, for a period of one hundred and eighty (180) days
   after the date of this Amendment as to such existing contracts and
   ninety (90) days from the date of delivery of any hereafter arising
   contracts.  In any event, Borrower agrees to use its best efforts
   to cause compliance with the Claims Act as soon as practicable.
   Notwithstanding anything contained herein or otherwise to the
   contrary, none of the Accounts arising under any such contract
   shall be Eligible Accounts unless Lender and Borrowers are in
   compliance with the applicable Claims Act at all times after the
   applicable ninety (90) or one hundred and eighty (180) day period,
   as applicable, provided above for compliance with the Claims Act .
   3. Each Borrower certifies to Lender that (after giving
   effect to this Amendment) all representations and warranties of
   such Borrower contained in the Loan Agreement are, true and correct
   as of the date of this Amendment, except to the extent such
   representations and warranties relate solely to an earlier date.
   4. Each Borrower certifies to Lender that (after giving
   effect to this Amendment) no Event of Default under the Loan
   Agreement, or event which with the passage of time or the giving of
   notice, or both, would constitute an event of default under the
   Loan Agreement, has occurred and is continuing.
   5. (a)   In no way in limitation of the provisions of Section
   9.15 of the Loan Agreement, Borrower will pay all out-of-pocket
   expenses incurred by Lender in connection with the preparation of
   this Amendment and of the other Financing Agreements, including,
   all amendments, supplements or modifications hereafter made to any
   of the foregoing after the date of this Amendment, and the closing
   of the transactions contemplated herein and therein, including,
   without limitation, the reasonable fees and expenses of counsel for
   Lender.  In addition, Borrower agrees to pay all documentary stamp
   taxes, intangible taxes, filing or recording fees required in
   connection with the borrowings hereunder and creating, perfecting
   and preserving Lender's security interest in the Collateral.
   6. (a)  EACH BORROWER HEREBY KNOWINGLY, VOLUNTARILY AND
   INTENTIONALLY WAIVES ANY RIGHT IT MAY HAVE TO A TRIAL BY JURY IN
   RESPECT OF ANY LITIGATION ARISING OUT OF, UNDER OR IN CONNECTION


   WITH THIS AMENDMENT, THE LOAN AGREEMENT, ALL DOCUMENTS AT ANY TIME
   MADE IN CONNECTION WITH THIS AMENDMENT, THE LOAN AGREEMENT, OR THE
   TRANSACTIONS CONTEMPLATED HEREIN OR THEREIN.  FURTHER, EACH
   BORROWER HEREBY CERTIFIES THAT NO REPRESENTATIVE OR AGENT OF THE
   LENDER NOR THE LENDER'S COUNSEL HAS REPRESENTED, EXPRESSLY OR
   OTHERWISE, THAT THE LENDER WOULD NOT, IN THE EVENT OF SUCH
   LITIGATION, SEEK TO ENFORCE THIS WAIVER OF RIGHT TO JURY TRIAL
   PROVISION.  FINALLY, EACH BORROWER ACKNOWLEDGES THAT THE LENDER HAS
   BEEN INDUCED TO ENTER INTO THIS AGREEMENT BY, INTER ALIA, THE
   PROVISIONS OF THIS PARAGRAPH.
   7. Each Borrower agrees that it has no off-sets, defenses or
   counterclaims to the payment of the Obligations or the performance
   by it under the Loan Agreement or the other Financing Agreements.
   Further, each Borrower agrees that it has no claims of any nature
   whatsoever against the Lender, its parent, subsidiaries,
   affiliates, divisions, officers, directors, employees, agents,
   stockholders, successors, or assigns arising out of or related to
   the Obligations, the other Financing Agreements, or otherwise.
   IN WITNESS WHEREOF, the parties hereto have caused this
Amendment to be duly executed, sealed and delivered the day and
year first above written.
                                      BORROWERS:
                                      PERMA-FIX ENVIRONMENTAL
                                      SERVICES, INC., a Delaware
                                      corporation


                                      By: /s/ Richard T. Kelecy
                                        ______________________________
                                         Richard T. Kelecy, Chief
                                         Financial Officer


                                      INDUSTRIAL WASTE MANAGEMENT, INC.,
                                      a Missouri corporation



                                      By:  /s/ Richard T. Kelecy
                                          _____________________________
                                           Richard T. Kelecy, Chief
                                           Financial Officer


                                      SCHREIBER, YONLEY & ASSOCIATES
                                      (formerly known as Schreiber, Grana
                                      & Yonley, Inc.), a Missouri
                                      corporation

                                      By:  /s/ Richard T. Kelecy
                                         _____________________________
                                          Richard T. Kelecy, Chief
                                          Financial Officer



                                       PERMA-FIX TREATMENT SERVICES, INC.,
                                       an Oklahoma corporation

                                       By: /s/ Richard T. Kelecy
                                           ________________________________
                                            Richard T. Kelecy, Chief
                                            Financial Officer



                                        PERMA-FIX, INC., an Oklahoma
                                        corporation

                                        By: /s/ Richard T. Kelecy
                                           ________________________________
                                             Richard T. Kelecy, Chief
                                             Financial Officer

                                         MINTECH, INC., an Oklahoma
                                         corporation

                                         By: /s/ Richard T. Kelecy
                                            ________________________________
                                              Richard T. Kelecy, Chief
                                              Financial Officer

                                         RECLAMATION SYSTEMS, INC., an
                                         Oklahoma corporation

                                         By:  /s/ Richard T. Kelecy
                                            ________________________________
                                               Richard T. Kelecy, Chief
                                               Financial Officer

                                          PERMA-FIX OF NEW MEXICO, INC.,
                                          a New Mexico corporation

                                          By:  /s/ Richard T. Kelecy
                                             ________________________________
                                                Richard T. Kelecy, Chief
                                                Financial Officer

                                           PERMA-FIX OF FLORIDA, INC.,
                                           a Florida corporation

                                           By: /s/ Richard T. Kelecy
                                              _______________________________
                                                Richard T. Kelecy, Chief
                                                Financial Officer

                                            PERMA-FIX OF MEMPHIS, INC.,
                                            a Tennessee corporation

                                            By: /s/ Richard T. Kelecy
                                               ______________________________
                                                  Richard T. Kelecy, Chief
                                                  Financial Officer



                                             PERMA-FIX OF DAYTON, INC.,
                                             an Ohio corporation

                                             By: /s/ Richard T. Kelecy
                                                ______________________________
                                                  Richard T. Kelecy, Chief
                                                  Financial Officer

                                             PERMA FIX OF FT. LAUDERDALE, INC.,
                                             a Florida corporation

                                             By:  /s/ Richard T. Kelecy
                                                ________________________________
                                                  Richard T. Kelecy, Chief
                                                  Financial Officer

                                             CHEM-MET SERVICES, INC.,
                                             a Michigan corporation

                                             By: /s/ Richard T. Kelecy
                                                ________________________________
                                                Name:  Richard T. Kelecy
                                                Title: Chief Financial Officer

                                             CHEMICAL CONSERVATION OF GEORGIA,
                                             INC., a Georgia corporation

                                             By: /s/ Richard T. Kelecy
                                                ______________________________
                                                Name:  Richard T. Kelecy
                                                Title: Chief Financial Officer


                                             CHEMICAL CONSERVATION CORPORATION,
                                             INC., a Florida corporation

                                             By: /s/ Richard T. Kelecy
                                                ________________________________
                                                Name:  Richard T. Kelecy
                                                Title: Chief Financial Officer


                                             LENDER:
                                             CONGRESS FINANCIAL CORPORATION
                                             (FLORIDA)

                                             By:
                                                ______________________________
                                                Name:
                                                Title:
30060595v6