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Federal Facilities Restoration and Reuse Office (FFRRO)


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Fact Sheet

Where to comment

To submit new data about a site, correct existing data, or provide general suggestions for the Federal Facilities Site Evaluation Project, please visit the FFSEP comment page.

On This Page

The process of listing a site to the National Priorities List (NPL) begins with site discovery or notification to EPA of possible releases of hazardous substances. Sites are discovered by various parties, including citizens, State agencies, and EPA Regional offices. Once discovered, sites are entered into the Comprehensive Environmental Response, Compensation, and Liability Information System (CERCLIS), EPA's computerized inventory of potential hazardous substance release sites. EPA then evaluates the potential for a release of hazardous substances from the site through the following steps to determine whether the site should be included on the Superfund National Priorities List.

Superfund Process

Section 120(c) of the Comprehensive Environmental Response, Compensation and Liability Act (CERCLA) requires EPA to establish a Federal Agency Hazardous Waste Compliance Docket (Docket), which contains information reported to EPA by federal facilities that manage hazardous waste or from which hazardous substances, pollutants, or contaminants have been released. The Preliminary Assessment (PA) and Site Inspection (SI) are generally prepared by the responsible Federal Agency and used by EPA to evaluate the potential for a release of hazardous substances from the site.

A PA is designed to determine whether a site poses little or no threat to human health and the environment, or if it does pose a threat, whether that threat requires further investigation.

An SI identifies sites that enter the National Priorities List (NPL) Site Listing Process and provides the data needed for Hazard Ranking System (HRS) documentation and scoring.

Information collected during the PA and SI is used to calculate an HRS score. Sites with a preliminary HRS score of 28.50 or greater may be eligible for listing on the NPL.

The NPL is the list of top priority sites among the known releases or threatened releases of hazardous substances, pollutants, or contaminants throughout the United States. The NPL is intended primarily to guide the EPA in determining which sites warrant further investigation.

Below, you will find statistics regarding the 514 sites that are part of the Federal Facilities Site Evaluation Project.


Number of Sites on the List, by Federal Agency

Number of Sites on the List

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Overall FFSEP Site Status Breakdown

Overall FFSEP Site Status Breakdown

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FFSEP Status Breakdown, by Region

Region 1

Region 1 Status

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Region 2

Region 2 Status

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Region 3

Region 3 Status

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Region 4

Region 4 Status

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Region 5

Region 5 Status

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Region 6

Region 6 Status

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Region 7

Region 7 Status

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Region 8

Region 8 Status

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Region 9

Region 9 Status

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Region 10

Region 10 Status
Total Number of Sites: 514

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Send comments to: oswer_ffsep@epa.gov

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