Superfund: National Priorities List (NPL)

The National Priorities List (NPL) is the list of national priorities among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States and its territories. The NPL is intended primarily to guide the EPA in determining which sites warrant further investigation.

From this Web page you will find the following information:

  • Basic NPL Information - Provides details about the process of adding sites to the NPL including an introduction to the Hazard Ranking System (HRS), information on how sites are placed on the NPL, the public comment process, how sites are deleted from the NPL, and the notice of policy change for partial deletions from the NPL.
  • NPL Site Status Information - Provides links to pages containing total counts of NPL sites that have achieved a certain status or milestone as of today and by fiscal year. Lists of all current proposed NPL, NPL, construction complete, partially deleted, and deleted sites (sorted by action date, site name, or state) are also linked from this page.
  • Addition of Subsurface Intrusion to the HRS - Provides details about the addition of a subsurface intrusion component to the HRS.
  • HRS Toolbox - Links to current guidance documents that may be used to determine if a site is a candidate for inclusion on the NPL.
  • Current NPL Updates: New Proposed NPL Sites¬†& New NPL Sites - Links to documents for the current new proposed NPL sites and new NPL sites, including: Documentation Records, Site Listing Narratives, Support Documents and other supporting documentation.
  • Federal Register Notices for NPL Updates - Links to Federal Register notices for proposed NPL updates and NPL updates from 1982 to present.

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