Tag: Hazard Ranking System


Vapor Intrusion – Revisions to the Superfund National Priorities List - Hazard Ranking System

The United States Environmental Protection Agency’s (USEPA’s) final rule to add vapor intrusion to the Superfund listing criteria was submitted to the White House Office of Management and Budget for review on September 2, 2016.  The rule would make vapor intrusion a component of the Hazard Ranking System (HRS) used to evaluate sites eligible for […]


Proposed Rule for the Addition of a Subsurface Intrusion Component to the Superfund Hazard Ranking System

On February 29, 2016, USEPA issued a proposed rule to add a subsurface vapor intrusion component to the Superfund Hazard Ranking System (“HRS”).  The HRS is the principal mechanism EPA uses to evaluate sites for placement on the National Priorities List (NPL).  The National Priorities List (NPL) is the list of national priorities among the […]