Frequent Questions

How can I find information on how to score sites for possible listing on the National Priorities List (NPL)?

Information on the site Hazardous Ranking System (HRS) is available on the EPA Web site. More detailed information is also available from EPA publications including, the Hazard Ranking System Guidance Manual; Interim Final, November 1992, (NTIS Exit Disclaimer PB92-963377, EPA 9345.1-7) and the December 14, 1990 Federal Register, Hazard Ranking System; Final Rule (55 FR 51532).

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