SIP Approval: New Hampshire (revisions to establish nitrogen oxide reasonably available control technology requirements for coal-fired cyclone boilers). 

SIP Proposal: California (revisions to San Diego County Air Pollution Control portion of plan to expand existing provision that exempts tub grinders and trommel screens that process green material from permit requirements to include horizontal grinders and processing of mixtures of green material and food material). 

SIP Approval: New Hampshire (amendments to motor vehicle inspection and maintenance program regulation).

United States v. San Diego, City of, No. 3:23-cv-00541-LL-BGS (S.D. Cal. Apr. 22, 2024). Under a proposed consent decree, settling CERCLA defendants must collectively pay $2,412,029.89 for reimbursement of response costs incurred in connection with the release of hazardous substances at the former Naval Training Center in San Diego, California. 

EPA denied a petition from the Center for Biological Diversity requesting that discarded polyvinyl chloride be listed as a hazardous waste under RCRA. 

EPA proposed to approve a CAA §111(d)/129 state plan submitted by South Carolina for implementing and enforcing the emissions guidelines applicable to existing commercial and industrial solid waste incineration units. 

EPA finalized national primary drinking water regulations for six per- and polyfluoroalkyl substances (PFAS): perfluorooctanoic acid (PFOA), perfluorooctane sulfonic acid (PFOS), perfluorohexane sulfonic acid (PFHxS), perfluorononanoic acid (PFNA), hexafluoropropylene oxide dimer acid (HFPO-DA), and perfluorobutane sulfonic acid (PFBS); the Agency also finalized a Hazard Index of 1 as the maximum contaminant level goal and maximum contaminant level for any mixture containing two or more of PFHxS, PFNA, HFPO-DA, and PFBS.

NOAA announced the availability of final evaluation findings for seven state and territory coastal management programs and four national estuarine research reserves under the CZMA. 

United States v. General Dynamics Corp., No. 6:24-cv-00722 (M.D. Fla. Apr. 18, 2024). Under a proposed consent decree, settling CERCLA defendants that released and/or threatened releases of hazardous substances into the environment at the General Dynamics Longwood Superfund Site located in Longwood, Florida, must perform a remedial design and remedial action for the site, reimburse EPA for its past response costs for the site, and pay future costs related to the work. 

EPA amended specific provisions in the Greenhouse Gas Reporting Rule to improve data quality and consistency.