EPA Final Rule Adds Vapor Intrusion To Superfund Site Scoring System

EPA has issued a final rule adding vapor or water intrusion as a contaminant pathway for placing a site on the Superfund National Priorities List (NPL), with EPA maintaining the move is unlikely to increase the number of sites named to the NPL despite the large number of sites that are suspected of having vapor or water intrusion. EPA Administrator Gina McCarthy Dec. 7 signed a final rule adding a “subsurface intrusion” (SsI) component to the Hazard Ranking System...