Perma-Fix Environmental Services (PESI) 10-Q 2002 Q3 Quarterly report

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO SECTION 906
OF THE SARBANES-OXLEY ACT OF 2002

          In connection with the Quarterly Report of Perma-Fix Environmental Services, Inc. ("PESI") on Form 10-Q for the period ended September 30, 2002 as filed with the Securities and Exchange Commission on the date hereof (the "Form 10-Q"), I Dr. Louis F. Centofanti, Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

          (1)     The Form 10-Q fully complies with the requirements of Section 13(a) or 15(d) of 
           the Securities Exchange Act of 1934 (15 U.S.C. Section 78m or Section 78o(d)); and

          (2)     The information contained in the Form 10-Q fairly presents, in all material respects, 
          the financial condition and results of operations of the Company.

Dated: November __, 2002

     /s/ Louis F. Centofanti         
Dr. Louis F. Centofanti
President and
Chief Executive Officer