The document discusses Superfund sites and the process for evaluating and listing them. The EPA uses a Hazard Ranking System (HRS) to assess sites based on size, toxic materials, and hazard to human health. Sites that score above 28.5 are considered remedial sites and placed on the National Priorities List for long-term cleanup. Examples of remedial sites include landfills, dumps, and abandoned chemical plants. The document also lists links to pages about regulating the poultry industry and an animated documentary about algae-based biofuels.