NMFS proposed to issue protective regulations under §4(d) of the ESA for the conservation of the threatened oceanic whitetip shark. 

NOAA approved a boundary expansion for the Narragansett Bay National Estuarine Research Reserve in Prudence Island, Rhode Island, under the CZMA.

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 finalized a rule to address the unreasonable risk of injury to health presented by methylene chloride under its conditions of use under TSCA. 

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. 

NMFS announced the initiation of a five-year review for the non-U.S. distinct population segment of smalltooth sawfish under the ESA. 

EPA announced the availability of proposed interim registration review decisions for bromine, and proposed final registration review decisions for agrobacterium radiobacter, polybutene resins, and porcine zona pellucida. 

EPA withdrew from Agency regulation and management two designated ocean dredged material disposal sites, the Nome East and Nome West Sites, located near Nome, Alaska, pursuant to the Marine Protection, Research, and Sanctuaries Act.