SIP Approval: Kentucky (revisions to geographical boundary description and attainment status designation for the Henderson-Webster 2010 primary sulfur dioxide nonattainment area). 

SIP Proposal: Georgia (regional haze). 

SIP Proposal: District of Columbia, Maryland, and Virginia (revisions to motor vehicle emissions budgets and onroad and nonroad mobile emissions for volatile organic compounds and nitrogen oxides for years 2025 and 2030). 

SIP Proposal: Nebraska (miscellaneous changes). 

The Internal Revenue Service proposed regulations relating to the clean electricity production credit and the clean electricity investment credit established by the Inflation Reduction Act of 2022 to provide rules for determining greenhouse gas emissions rates resulting from the production of electricity; petitioning for provisional emissions rates; and determining eligibility for these credits in various circumstances.

United States v. TPC Group LLC, No. 24-00187 (E.D. Tex. May 21, 2024). Under a proposed consent decree, a settling CAA defendant must pay $12.1 million in civil penalties and spend approximately $80 million to improve its risk management program and improve safety at its petrochemical manufacturing facilities in Port Neches and Houston, Texas, in connection with a November 2019 explosion at the Neches facility and failure to take corrective action at the Houston facility. 

SIP Proposal: Arizona (partial approval and partial disapproval of revisions related to regional haze). 

NMFS announced its 90-day finding on a petition to list the Delaware River population of Atlantic sturgeon as an endangered distinct population segment (DPS) of Atlantic sturgeon under the ESA and to designate critical habitat for the DPS, finding the petition does not present substantial scientific or commercial information indicating action may be warranted and denying the petition. 

FWS proposed to designate approximately 930 acres in Churchill County, Nevada, as critical habitat for the Dixie Valley toad under the ESA. 

FWS removed approximately 64,797 acres of land within Arizona from the designation of critical habitat for the jaguar to comply with a court order.