AMENDED STOCK PURCHASE AGREEMENT
                                

     THIS AMENDED STOCK PURCHASE AGREEMENT ("Amended Agreement") is
entered into this 7th day of October, 1997, and is an amendment to
the Stock Purchase Agreement  ("Agreement") dated July 31, 1997, 
by and between PERMA-FIX ENVIRONMENTAL SERVICES, INC., a Delaware
corporation ("PESI"), and STEVE GORLIN, an individual ("Gorlin").

                          WITNESSETH:
                                
     WHEREAS, Gorlin is a member of the Board of Directors of PESI;
and

     WHEREAS, Gorlin and PESI have negotiated this Amended
Agreement in which Gorlin would acquire a total of 200,000 shares
of PESI Common Stock for $425,000.00, which is the closing bid
price of each share of PESI Common Stock as quoted on the NASDAQ on
July 30, 1997, the original date of the Agreement, as approved by
the Perma-Fix Environmental Services, Inc. Board of Directors, to
be purchased on or before November 30, 1997; and

WHEREAS, the closing bid price of the PESI Common Stock was
$2.125, as reported on the NASDAQ as of July 30, 1997; and 

WHEREAS, Gorlin desires to purchase Two Hundred Thousand
(200,000) shares of PESI Common Stock, par value $.001 per share,
and PESI desires to sell to Gorlin such shares of Common Stock,
upon the terms and conditions set forth herein;

     WHEREAS, in order to induce Gorlin to enter into this
Amended Agreement and to purchase the Common Stock on the terms
and subject to the conditions hereof, PESI will issue a Warrant
for the purchase of 100,000 shares of Common Stock at $2.40 per
share, as further defined herein.

NOW, THEREFORE, in consideration of the mutual promises and
the respective covenants and agreements contained herein, the
parties hereto agree as follows:

     1.   Purchase and Sale.

            1.1  Purchase of Shares.  Subject to the terms and conditions
          of this Amended Agreement, Gorlin hereby agrees to
          purchase Two Hundred Thousand (200,000) shares of PESI
          Common Stock (the "Shares"), and as Gorlin pays for the
          Common Stock to be purchased by him hereunder, PESI will
          promptly instruct its transfer agent to issue to Gorlin
          that number of shares of PESI Common Stock for which
          Gorlin has paid for, pursuant to the terms of this
          Amended Agreement.  

               1.2  Purchase Price;  Payment of Purchase Price. The per share
          purchase price of the Shares shall be $2.125, the closing
          bid price of the Common Stock on July 30, 1997 (date of
          Agreement), as reported on the National Association of
          Securities Dealers Automated Quotation System ("NASDAQ").
          In consideration for the Shares, Gorlin will tender to
          the Company Four Hundred Twenty-Five Thousand Dollars
          ($425,000.00) in the manner described in Section 1.3
          below.

               1.3  Purchase Period.  The shares will be purchased on or
          before November 30, 1997.  In consideration for the
          purchase of said shares, Gorlin will tender to the
          Company $425,000.00. 

             1.4  Common Stock Purchase Warrant.  Subject to the terms and
          conditions of the Common Stock Purchase Warrant attached
          hereto as Exhibit "A" ("Warrant"), PESI agrees to issue
          to Gorlin such Warrant for the purchase of 100,000 shares
          of Common Stock at an exercise price of $2.40 per common
          share.  PESI will issue to Gorlin the Warrant within five
          (5) business days after Gorlin has paid PESI the full
          $425,000.00.

     2.   Representations and Warranties of Gorlin. Gorlin represents
     and warrants as follows:

               2.1  Purchase for Investment.  Gorlin is acquiring, or will
          acquire, the Shares and the Warrant for investment, with
          no present intention of dividing Gorlin's participation
          with others or reselling or otherwise participating,
          directly or indirectly, in a distribution thereof, and
          not with a view to or for sale in connection with any
          distribution thereof, except pursuant to a registration
          statement under the Securities Act of 1933, as amended
          (the "Securities Act"), and any applicable state
          securities laws, or a transaction exempt from registra-
          
          tion thereunder, and shall not make any sale, transfer or
          other disposition of the Shares or the Warrant in
          violation of any applicable state securities laws,
          including in each instance any applicable rules and
          regulations promulgated thereunder, or in violation of
          the Securities Act or the rules and regulations
          promulgated thereunder by the Securities and Exchange
          Commission (the "SEC").

             2.2  No Registration.  Gorlin acknowledges that the Shares and
          the Warrant are not being registered under any state
          securities laws, and are not being registered under the
          Securities Act on the ground that this transaction is
          exempt from registration under Section 3(b) and/or 4(2)
          of the Securities Act, and that reliance by PESI on such
          exemptions is predicated in part on Gorlin's
          representations set forth herein.

             2.3  Restricted Transfer.  Gorlin agrees that PESI may refuse
          to permit the sale, transfer or disposition of any of the
          Shares or the Warrant received by Gorlin unless there is
          in effect a registration statement under the Securities
          Act and any applicable state securities law covering such
          transfer or Gorlin furnishes an opinion of counsel or
          other evidence, reasonably satisfactory to counsel for
          PESI, to the effect that such registration is not
          required.

             2.4  Legend.  Gorlin understands and agrees that stop transfer
          instructions will be given to PESI's transfer agent and
          that there will be placed on the certificate or
          certificates for any of the Shares received by Gorlin,
          any substitutions therefor and any certificates for any
          additional shares which might be distributed with respect
          to such Shares, a legend stating in substance:

                         "The shares of stock evidenced by this
          certificate have been acquired for investment
          and have not been registered under the
          Securities Act of 1933, as amended (the
          "Securities Act"). These shares may not be
          sold or transferred except pursuant to an
          effective registration statement under the
          Securities Act and any applicable state
          securities laws unless there is furnished to
          the issuer an opinion of counsel or other
          evidence, reasonably satisfactory to the
          issuer's counsel, to the effect that such
          registration is not required."

               2.5  Indefinite Holding Period. Gorlin understands that under
          the Securities Act, the Shares received by Gorlin must be
          held indefinitely unless they are subsequently registered
          under the Securities Act or unless an exemption from such
          registration is available with respect to any proposed
          transfer or disposition of such shares.

               2.6  Rule 144 Compliance.  Gorlin understands that PESI is
          required to file periodic reports with the SEC and that
          certain sales of the Shares received by Gorlin may be
          exempt from registration under the Securities Act by
          virtue of Rule 144 promulgated by the SEC under the
          Securities Act, provided that such sales are made in
          accordance with all of the terms and conditions of that
          Rule including compliance with the required one-year
          holding period. Gorlin further understands that if Rule
          144 is not available for sales of the Shares received by
          Gorlin, such Shares may not be sold without registration
          under the Securities Act or compliance with some other
          exemption from such registration, and that PESI has no
          obligation to register the Shares or the Warrant received
          or to be received by Gorlin hereunder or take any other
          action necessary in order to make compliance with an
          exemption from registration available.

               2.7  Sophisticated Investor.  Gorlin, as a member of the Board
          of Directors of PESI, possesses extensive knowledge as to
          the business and operation of PESI and has such knowledge
          and experience in financial and business matters that he
          is capable of evaluating the merits and risks of the
          acquisition of the Shares.

               2.8  Recission Period Under Florida Act.  The shares of Common
          Stock to be issued hereunder are also being sold in
          reliance upon an exemption contained in Section
          517.061(11) of the Florida Securities and Investors
          Protection Act ("Florida Act").  The shares of Common
          Stock issuable under this Agreement may not be reoffered
          for sale or resold in the State of Florida unless such
          are registered or the transaction is exempt under the
          Florida Act.  Any sale of Common Stock made under this
          Agreement and Section 517.061(11) of the Florida Act is
          voidable at the option of Gorlin within three (3) days
          after the first tender of consideration is made by Gorlin
          to PESI or its agent hereunder.

     3.   Representations and Warranties of PESI.  PESI represents and
     warrants as follows:

               3.1  Organization and Standing.  PESI is a corporation duly
          organized, validly existing and in good standing under
          the laws of the State of Delaware.

               3.2  Power, Authority, and Validity.  PESI has full right,
          power and corporate authority to enter into this Amended
          Agreement and to perform the transactions contemplated
          hereby, and this Amended Agreement is valid and binding
          upon and enforceable against PESI in accordance with its
          terms. The execution, delivery and the performance of
          this Amended Agreement by PESI has been duly and validly
          authorized and approved by all requisite action on the
          part of PESI and Buyer.

               3.3  Status of PESI Common Stock.  The PESI Common Stock to be
          issued pursuant to this Amended Agreement, when so
          issued, will be duly and validly authorized and issued,
          fully paid and nonassessable.

     4.   Miscellaneous.

               4.1  Notices.  All notices, requests, demands, and other
          communications under this Amended Agreement shall be in
          writing and shall be deemed to have been duly given if
          delivered or mailed, first-class postage prepaid, to the
          following at the addresses indicated:

          To PESI:       Perma-Fix Environmental Services, Inc.
                         c/o Chief Financial Officer
                         1940 Northwest 67th Place
                         Gainesville, Florida 32653

          To Gorlin:     Steve Gorlin 
                         5115 New Peachtree Road, Suite 200
                         Chamblee, Georgia 30341

          or to any other address that PESI or Gorlin shall
designate in writing.

               4.2  Brokers. Each party represents and warrants that all
          negotiations related to this Amended Agreement have been
          carried on by the parties without the intervention of any
          broker. Each party agrees to indemnify, and hold the
          other party harmless against any claims for fees or
          commissions employed or alleged to have been employed by
          such party.

               4.3  Amendment.  This Amended Agreement shall not be amended,
          altered or terminated except by a writing executed by
          each party.

               4.4  Governing Law.  This Amended Agreement shall be governed
          in all respects by the law of the State of Delaware.

               4.5  Headings.  The paragraph headings used in this Amended
          Agreement are included solely for convenience, and shall
          not in any way affect the meaning or interpretation of
          this Agreement.

               4.6  Entire Agreement.  This Amended Agreement sets forth the
          entire understanding of the parties; further, this
          Amended Agreement shall supersede and/or replace any oral
          or written agreements relating to this subject matter
          entered into by the parties before the date of this
          Amended Agreement.

               4.7  Binding Effect.  This Amended Agreement shall be binding
          on and inure to the benefit of, and be enforceable by,
          the respective heirs, legal representatives, successors,
          and assigns of the parties pursuant to its terms.

     PESI and Gorlin have executed this Amended Agreement as of the
7th day of October, 1997.

  PERMA-FIX ENVIRONMENTAL 
  SERVICES, INC.
  
  
 By:______________________________        _________________________
      RICHARD T. KELECY                   STEVE GORLIN,
       Chief Financial Officer            Individually