After Delays, EPA's Superfund Vapor Intrusion Rule Quietly Takes Effect

EPA has quietly put into effect an Obama-era rule that opens the door to listing Superfund sites based solely on vapor or water intrusion, after twice delaying the effective dates of the rule along with several others that were signed late in the last administration but which were slated to take effect under the new regime. The agency’s new Hazard Ranking System (HRS) rule, which allows regulators to list contaminated sites based solely on the presence of vapor or water...