The National Telecommunications and Information Administration (NTIA) proposed to follow the First Responder Network Authority’s NEPA procedures on an interim basis with modifications to account for NTIA’s internal organization and establish 33 categorical exclusions in compliance with NEPA, the CEQ regulations, and other related authorities.

SIP Proposal: Idaho (removal of inspection and maintenance program for the Boise-Northern Ada County carbon monoxide nonattainment area).

FWS listed the Egyptian tortoise as a threatened species under the ESA and finalized a rule under §4(d) of the Act to provide for conservation of the species.

EPA proposed a national primary drinking water regulation and health-based maximum contaminant level goals for perfluorohexane sulfonic acid (PFHxS), hexafluoropropylene oxide dimer acid (HFPO-DA) and its ammonium salt (also known as a GenX chemicals), perfluorononanoic acid (PFNA), and perfluorobutane sulfonic acid (PFBS), and their mixtures, as well as for perfluorooctanoic acid and perfluorooctane sulfonic acid under the SDWA.

The Internal Revenue Service proposed regulations related to excise taxes imposed on certain chemicals and imported substances, effective July 1, 2022.

United States v. Holyoke, Massachusetts, City of, No. 19-cv-10332-MGM (D. Mass. Mar. 22, 2023). A settling CWA defendant that discharged pollutants from unpermitted components of its sewer collection system to the Connecticut River must separate portions of the sewer collection system, upgrade certain elements of the combined sewer system, implement an illicit discharge detection and elimination program to address stormwater discharges, and pay a $50,000 civil penalty.

SIP Approval: North Carolina (updated memoranda of agreement outlining transportation conformity criteria and procedures related to interagency consultation, conflict resolution, public participation, and enforceability of certain transportation-related control and mitigation measures).

SIP Approval: Idaho (updates to incorporation by reference of NAAQS and related planning and monitoring requirements).

SIP Proposal: California (limited approval and limited disapproval of revisions concerning nitrogen oxide emissions from stationary gas turbines in the Eastern Kern Air Pollution Control District).

EPA extended the date for existing coal-fired power plants to submit a notice of planned participation for the permanent cessation of coal combustion subcategory in the 2020 Steam Electric Reconsideration Rule.