A list of the worst hazardous waste sites identified by Superfund is the ______________ list.

• A. National Priorities List
• B. Top Hazard List
• C. Hazardous Sites List
• D. Superfund Priority List

Answer: (A)

National Priorities List identifies the worst hazardous waste sites identified by Superfund and is the EPA’s official roster for sites that require long-term cleanup under CERCLA. Sites are scored using the Hazard Ranking System, which weighs factors such as the toxicity and mobility of the contaminants, the potential for exposure to people, and the extent of affected or nearby populations. The higher a site's score, the higher its priority for remedial action and federal funding. This is why the National Priorities List is the correct choice: it is specifically designated as the list of the most hazardous sites that warrant federal cleanup attention. Other names like Top Hazard List, Hazardous Sites List, or Superfund Priority List are not official terms used by the EPA, so they don’t represent the formal listing used for prioritizing cleanups.