89 FR 41392
NOAA approved a boundary expansion for the South Slough National Estuarine Research Reserve in Charleston, Oregon.
NOAA approved a boundary expansion for the South Slough National Estuarine Research Reserve in Charleston, Oregon.
EPA finalized a CWA regulation to revise the technology-based effluent limitations guidelines and standards for the steam electric power generating point source category applicable to flue gas desulfurization wastewater, bottom ash transport water and legacy wastewater at existing sources, and combustion residual leachate at new and existing sources.
EPA designated two per- and polyfluoroalkyl substances (PFAS)—perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS), including their salts and structural isomers—as hazardous substances under CERCLA.
EPA established requirements for legacy coal combustion residuals (CCR) surface impoundments, as well as CCR management units at active CCR facilities and at inactive CCR facilities with a legacy CCR surface impoundment.