The United States Environmental Protection Agency (EPA), in partnership with the States, biennially collects information regarding the generation, management, and final disposition of hazardous wastes regulated under the Resource Conservation and Recovery Act of 1976 (RCRA), as amended. The purpose of this 2011 National Biennial Report is to communicate the findings of EPAs 2011 hazardous waste reporting data collection efforts to the public, government agencies, and the regulated community. The 2011 National Biennial Report consists of three volumes of data: The National Analysis data presents a detailed look at waste-handling practices in the States, and largest facilities nationally, including (1) the quantity of waste generated, managed, shipped, and received, and interstate shipments and receipts, and (2) the number of generators and managing facilities; The State Detail Analysis data is a detailed look at each States waste handling practices, including overall totals for generation, management, shipments, and receipts, as well as totals for the largest fifty facilities; and The List of Reported RCRA Sites identifies every hazardous waste facility in the United States that submitted a hazardous waste report in 2011.