EPA finalized guidance on petitions for a no migration variance (NMV) under the land disposal restrictions pursuant to RCRA for persons applying for a NMV for a waste pile temporarily located within a RCRA-permitted Subtitle C landfill cell.

EPA withdrew the direct final rule “NPDES Small MS4 Urbanized Area Clarification,” published on December 2, 2022, due to the receipt of an adverse comment.

EPA took final action on the technology review conducted on the miscellaneous coating manufacturing source category regulated under the NESHAP, including amendments to provisions for inorganic hazardous air pollutant standards for process vessels.

The federal agencies issued their semiannual regulatory agendas to update the public about regulations currently under development, reviews of existing regulations with small business impacts, and regulations completed or canceled since the last agenda. EPA’s agenda can be found at 88 FR 11286.

SIP Approval: Wisconsin (changes to the definition of “chemical process plants” under the state's PSD and Title V operating permit programs).

SIP Approval: Illinois (nonattainment plan for the 2010 one-hour sulfur dioxide primary NAAQS for the Alton Township nonattainment area in Madison County).

EPA finalized a rule updating the incorporation by reference of several voluntary consensus standards in the Agency’s formaldehyde standards for composite wood products regulations under TSCA that have since been updated, superseded, or withdrawn by the issuing organizations.

EPA Region 1 announced the availability of the Draft NPDES Potable Water Treatment Facility General Permit for discharges to certain waters of the Commonwealth of Massachusetts and the state of New Hampshire.

EPA proposed changes to its test procedures required to be used by industries and municipalities when analyzing the chemical, physical, and biological properties of wastewater and other samples for reporting under the Agency’s NPDES permit program.

EPA announced a 30-day public comment period associated with release of the document, Protocol for the Ethylbenzene IRIS Assessment.