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National Priorities List (NPL) Site Listing Process

The 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 the NPL Web area, you can:

  • Learn about the NPL Site Listing process;
  • Locate NPL sites;
  • Check their cleanup progress; and
  • Get information on new and proposed NPL sites.


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