EPA is amending its hazardous waste regulations under subtitle C of the Resource Conservation and Recovery Act (RCRA) of 1976, as amended, for testing and monitoring activities. These amendments replace the current Second Edition, including Updates I and II, of the EPA approved test methods manual "Test Methods for Evaluating Solid Waste, Physical/Chemical Methods,"EPA Publication SW-846, by incorporating by reference the Third Edition (and its first update) into the RCRA regulations.

These amendments also revise Appendices II-Method 1311 Toxicity Characteristic Leaching Procedure (TCLP) and III-Chemical Analysis Test Methods to 40 CFR part 261, delete Appendix X-Method of Analysis for Chlorinated Dibenzo-p-dioxins and Dibenzofurans, Method 8280, to 40 CFR part 261, and revise Appendices I-Toxicity Characteristic Leaching Procedure (TCLP) and IX-Extraction Procedure (EP) Toxicity Test, to 40 CFR part 268.

This action is necessary to provide better and more complete analytical test methods for RCRA-related testing. The intent of this amendment is to provide up-to-date technologies in order to promote cost effectiveness and flexibility in choosing analytical test methods.

• Hazardous Waste Management System; Testing and Monitoring Activities - Federal Register Notice, August 31, 1993 (PDF)(11 pp, 24 K, August 31, 1993, FR Vol. 58, No. 167)