Jump to main content or area navigation.

Contact Us



Hazard Ranking System

The HRS is a numerically based scoring system that uses information obtained primarily from the initial, limited investigations conducted at a site: the PA and SI. The HRS score is the primary criterion EPA uses to determine whether a site should be placed on the NPL.

The HRS is a screening tool and not a site specific risk assessment.

NPL listing informs the public that the site appears to present sufficient relative risk to warrant the more extensive site characterization of a remedial investigation and feasibility study (RI/FS).

previous  [Slide 4 of 7]  [Home]  next


Superfund Help: Acronyms | Topics | Frequent Questions | Publications | Sitemap

OSWER Home | Superfund Home | Innovative Technologies Home