This document contains a list of large quantity generators of hazardous waste, as identified by EPA's Biennial Report. The Biennial Report is a census of hazardous waste generators and managers that are regulated by the Resource Conservation and Recovery Act (RCRA). Section 3002 of the Act requires hazardous waste generators to report to EPA or authorized states, at least every two years, the quantities, nature, and disposition of generated hazardous waste and the efforts to reduce the volume and toxicity of hazardous waste in comparison to previous years. There are 24,426 large quantity generators on the list. The lists of generators are arranged by state. Each state list is grouped by tons of RCRA generation. It also includes a list of state contacts.