SIP Approval: Missouri (rescission of Missouri General Conformity Rule).

SIP Proposal: Wisconsin (incorporation of 2015 primary and secondary ozone NAAQS and updates to ensure implementation of the ozone NAAQS in areas currently or formerly designated as nonattainment for any ozone standard).

EPA announced a proposed administrative settlement agreement under CERCLA concerning the Bautsch Gray Mine Superfund site in Jo Daviess County, Illinois, that reflects the potentially responsible party's inability to pay a cash dollar amount and requires the party to comply with specified property requirements.

SIP Approval: Indiana, Michigan, and Minnesota (startup, shutdown, and malfunction event provisions).

EPA approved a CAA §111(d) state plan submitted by the Florida Department of Environmental Protection establishing performance standards and other operating requirements for existing municipal solid waste landfills and providing for the implementation and enforcement of those standards and requirements.

SIP Approval: Oklahoma (revisions to general SIP definitions and incorporation by reference of federal requirements under Oklahoma Administrative Code). 

SIP Proposal: California (determination of attainment by the attainment date for the Imperial County 2015 ozone nonattainment area, but for emissions emanating from outside the United States).

SIP Approval: Arizona (maintenance plan and redesignation to attainment for the Nogales 2006 24-hour fine particulate matter planning area).  

SIP Proposal: North Carolina (revisions to emission control standards regulations).

EPA proposed to determine that the reduction in expenditures of recurrent nonfederal funds for the Hawaii Department of Health in support of its continuing air program under §105 of the CAA for fiscal year 2022 is a result of non-selective reductions in expenditures.