In this action, EPA proposed to amend its hazardous waste identification regulations under Subtitle C of the Resource Conservation and Recovery Act (RCRA) by expanding the Toxicity Characteristic to include additional chemicals and by introducing a new extraction procedure to be used in the Toxicity Characteristic. EPA also proposed to incorporate the changes made pursuant to this rule into the lists of hazardous substances under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) of 1980. 

• Hazardous Waste Management System; Identification and Listing of Hazardous Waste; Notification Requirements; Reportable Quantity Adjustments; Proposed Rule, Federal Register Notice (PDF)(46 pp, 2 MB, June 13, 1986, 51 FR 21648)