United States v. United Alloys & Steel Corp., No. 23-1968 (S.D.N.Y. Mar. 8, 2023). A settling CERCLA defendant must pay $260,000 to reimburse the United States’ past response costs regarding the Port Refinery Superfund site in New York.

EPA announced the availability of a revised draft document titled, Policy Assessment for the Reconsideration of the Ozone National Ambient Air Quality Standards, External Review Draft Version 2, that was prepared as part of the current reconsideration of the 2020 final decision on the NAAQS for ozone.

United States v. Gloucester, Massachusetts, City of, No. 1:23-cv-10505-LTS (D. Mass. Mar. 6, 2023). A settling CWA defendant must construct secondary sewage treatment upgrades by March 31, 2028, and comply with all effluent limits in the final permit by June 30, 2028, in connection with defendant's failure to meet certain effluent limits, based on secondary treatment standards, of the city’s water pollution control facility in violation of the final NPDES permit.

EPA Region 7 entered into a proposed settlement agreement under CERCLA for recovery of past response costs concerning the Newton County Mine Tailings Superfund site in Missouri.

FWS determined endangered species status for the bog buck moth under the ESA.

NOAA announced the availability of final evaluation findings for seven national estuarine research reserves—Ashepoo-Combahee-Edisto Basin, Chesapeake Bay Virginia, Guana Tolomato Matanzas, San Francisco Bay, South Slough, Tijuana River, and Weeks Bay—under §315 of the CZMA.

SIP Proposal: Illinois (second maintenance plan for the 1997 ozone NAAQS through 2032 in the St. Louis, MO-IL area).

EPA approved a CAA §111(d)/129 state plan submitted by the Maine Department of Environmental Protection revising emission guidelines for large municipal waste combustors and a state plan for existing small waste combustors.