SIP Approval: New Jersey (exemptions to improve resiliency during emergency situations, updates to hazardous air pollutant reporting thresholds, updates to certification and submission of emission statements, and addition of federal new source review requirements for fine particles).

SIP Approval: California (emissions of particulate matter from wood burning devices in the San Joaquin Valley Unified Air Pollution Control District).

SIP Proposal: Florida (miscellaneous changes).

All 10 EPA regions seek comment on the draft 2026 NPDES pesticide general permit, which covers point source discharges from the application of pesticides to waters of the United States.

NOAA and EPA seek comment on the proposed finding that Indiana has satisfied all conditions the agencies established as part of their 2008 approval of the state's coastal nonpoint pollution control program.

EPA announced the availability of draft guidance on applying the U.S. Supreme Court's recent decision in County of Maui v. Hawaii Wildlife Fund in the CWA §402 NPDES permit program for point source discharges that travel through groundwater before reaching a water of the United States.

United States v. Coffeyville Resources Refining & Marketing, LLC, No. 6:04-cv-01064 (D. Kan. Nov. 20, 2023). Under a proposed consent decree, a settling CAA defendant whose operation of a petroleum refinery in Coffeyville, Kansas, allegedly violated the CAA must undertake various measures to facilitate future compliance with the Act, reduce nitrogen oxide emissions from the refinery's heaters, and build a flare gas recovery system to reduce the refinery's emissions from refinery flares; pay $7 million in stipulated penalties and $6.25 million in civil penalties in total to the United States and the state of Kansas; and spend at least $1 million on an environmentally beneficial project to be approved by the state of Kansas.

EPA announced the availability of applicability determinations, alternative monitoring decisions, and regulatory interpretations with regard to the New Source Performance Standards; NESHAPs; the Emission Guidelines and Federal Plan Requirements for existing sources; and the Stratospheric Ozone Protection Program.

EPA proposed revisions to the regulations for decabromodiphenyl ether and phenol, isopropylated phosphate (3:1), two of the five persistent, bioaccumulative, and toxic chemicals addressed in final rules issued under TSCA in January 2021.

EPA published statements of findings after its review of certain TSCA submissions from September 1, 2023, to September 30, 2023, that certain new chemical substances or significant new uses are not likely to present an unreasonable risk of injury to health or the environment.