CONSENT OF INDEPENDENT CERTIFIED PUBLIC ACCOUNTANTS Perma-Fix Environmental Services, Inc. Gainesville, Florida We hereby consent to the incorporation by reference of our report dated March 16,2000, relating to the consolidated financial statements and schedule of Perma-Fix Environmental Services, Inc. and subsidiaries appearing in the Company's Annual Report on Form 10-K/A for the year ended December 31, 1999, into the Company's previously filed Forms S-3 and S-8 Registration Statements, File Nos. 33-85118 (S-3), 333-14513 (S-3), 333-43149 (S-3), 33-80580 (S- 8), 333-3664 (S-8), 333-17899 (S-8) and 333-25835 (S-8). /s/ BDO Seidman, LLP BDO Seidman, LLP Orlando, Florida April 11, 2000