A Superfund Site is a location in the United States that has been contaminated by hazardous waste and is eligible for cleanup under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA). These sites are identified by the Environmental Protection Agency (EPA) due to their potential risk to human health and the environment. The Superfund program aims to clean up these contaminated areas and restore them for safe use. Funding for these cleanups often comes from a trust fund, which is financed by taxes on the chemical and petroleum industries. The process involves assessing the site, planning the cleanup, and monitoring the results to ensure safety.